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钢筋焊接及机械连接接头的质量控制

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钢筋焊接及机械连接接头的质量控制钢筋焊接及机械连接接头的质量控制 根据建设部关于发布行业标准《钢筋焊接及验收规程》编号为JGJ18-2003,自2003年5年1日起实施;《钢筋机械连接通用技求规程》编号为JGJ107-2003,2003年7月1日起实施的要求编制了《钢筋焊接及机械连接接头的质量检控制》亦可作为施工员的钢筋工程中钢筋焊接及机械连接接头施工指南。 一、钢筋焊接骨架和焊接网 1、焊接骨架和焊接网的质量检验应包括外观检查和力学性能试验,并应按下列规定抽取抽试件: (1)凡钢筋牌号,直径及尺寸的相同的焊接骨架和焊接网应视为同一类型制...

钢筋焊接及机械连接接头的质量控制
钢筋焊接及机械连接接头的质量控制 根据建设部关于发布行业 标准 excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载 《钢筋焊接及验收规程》编号为JGJ18-2003,自2003年5年1日起实施;《钢筋机械连接通用技求规程》编号为JGJ107-2003,2003年7月1日起实施的要求编制了《钢筋焊接及机械连接接头的质量检控制》亦可作为施工员的钢筋工程中钢筋焊接及机械连接接头施工指南。 一、钢筋焊接骨架和焊接网 1、焊接骨架和焊接网的质量检验应包括外观检查和力学性能试验,并应按下列规定抽取抽试件: (1)凡钢筋牌号,直径及尺寸的相同的焊接骨架和焊接网应视为同一类型制品,且每300件作为一批,一周内不足300件的亦应按一批计算; (2)外观检查应按同一类型制品分批检查,每批抽查5,,且不得少于5件; (3)力学性能检验的试件,应从每批成品中切取;切取过试件的制品,应补焊同牌号、同直径的钢筋,其每边的搭接长度不应小于2个孔格的长度; 当焊接骨架所切取试件的尺寸,或受力钢筋直径大于8mm时,可在生产过程中制作模拟焊接试验网片(按规程图5.2.1-a),从中切取试件。 (4)由几种直径钢筋组合的焊接骨架或焊接网,应对每种组合的焊点作力学性能检验; (5)热轧钢筋的焊点应作剪切试验,试件应为3件;冷轧带肋钢筋焊点除作剪切试验外,尚应对纵向和横向冷轧带肋钢筋作拉伸试验,试件shall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should be centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possible with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping support and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stability, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. Process piping in the drain pipe must have a certain slope (about 0.002-0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the expansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of the pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, consider 应各为1件。剪切试件纵筋长度应大于或等于290mm,横筋长度应大于或等于50mm(接规程图5.2.1-b);拉伸试件纵筋长度应大于或等于300 mm(接规程图5.2.1-c); (6)焊接网剪切试件应沿同一横向钢筋随机切取; (7)切取剪切试件时,应使制品吕的纵向钢筋成为试件的受拉钢筋。 2.焊接骨架外观质量检查结果,应符合下列要求: (1)每件制品的焊点脱落、漏焊数量不得超过焊点总数的4%,且邻两焊点不得有漏焊及脱落; (2)应量测焊接骨架的长度和宽度,并应抽查纵、横方向3,5个网格的尺寸,其允许偏差应符合规程表5.2.2的规定。 当外观检查结果不符合上述要求时,应逐件检查,并剔出不合格品。 对不合格品经整修后,可提交二次验收。 表5.2.2焊接骨架的允许偏差 项 目 允许偏差(mm) 焊接骨架 长度 ?10 宽度 ?5 高度 ?5 骨架箍筋间距 ?10 受力主筋 间距 ?15 排距 ?5 3.焊接网外形尺寸检查和外观质量检查结果,应符合下列要求: (1)焊接网和长度、宽度及网格尺寸的允许偏差应为?10mm;网片两对角线之差不得大于10mm;网格数量应符合设计规定; (2) 冷轧带肋钢筋按550MPa计。 2e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to D、当拉抻试验结果不合格时,应再切取双倍数量试件进行复检;复验结果均合格时,应评定该批焊接制品焊点拉伸试验合格。当抗剪试验结果应从该批制品中再切取6个试件复验;当全部试件平均值达到要求时,应评定该批焊接制品焊点剪切试验合格 2.闪光对焊接头: 3pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 2.1闪光对焊接头的质量检验,应分批进行外观检查和力学性能试验,并应按下列规定作为一个检验批: a.钢筋闪光对焊以同一台班、同一焊工完成相同条件下的300个同牌号、同直径的钢筋焊接接头作为一批。当同一台班内焊接的接头数量较少,可在一周内累计计算;累计不足300个接头,应按一批计算; 对于施工现场闪光对焊如无连续施焊(即根据现场进度对各楼层或柱的钢筋进行施焊),以同一焊工、同一参数完成的300个同类型接头为一批,同一楼层或施工区段不足300个接头亦按一批计算; b.外观检查的接头数量,应从每批中抽查10,,且不得少于10个; c.力学性能试验时,应从每批接头中随机切取6个试件,其中3个做拉伸试验,3个做弯曲试验; d.焊接预应力钢筋(包括螺丝端杆与钢筋)时,可按生产时同等条件制作模拟试件; e.螺丝端杆接头可只做拉伸试验。 2.2闪光对焊接头外观检查结果,应符合下列要求: a. 接头处不得有横向裂纹; b.与电极接触处的钢筋表面不得有明显烧伤; 0b. 接头处的弯折角不得大于3; c. 接头的轴线偏移,不得大于钢筋直径的0.1倍,且不得大于2mm。 e.外观检查结果,当有1个接头不符合要求时,应对全部接头进行检查,剔出不合格接头,切除热影响区后重新焊接。 2.3闪光对焊接头拉伸试验结果应符合下列要求: 4e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to a.3个热轧钢筋接头试件的抗拉强度均不得小于该牌号钢筋规定的抗 2拉强度;RRB400钢筋接头试件的抗拉强度均不得小于570N/mm; 2 至少应有2个试件断于焊缝之外,并应呈延性断裂。 当达到上述2项要求时,应评定该批接头为抗拉强度合格。 当试验结果有2个试件抗拉强度小于钢筋规定的抗拉强度,或3个试件均在焊缝或热影响区发生脆性断裂时,则一次判定该批接头为不合格品。 当试验结果有1个试件的抗拉强度小于规定值,或2个试件在焊缝或热影响区发生脆性断裂,其抗拉强度均小于钢筋规定抗拉强度的1.10倍时,应进行复验。 复验时,应再切取6个试件。复验结果,当仍有1个试件的抗拉强度小于规定值,或有3个试件断于焊缝或热影响区,呈脆性断裂,其抗拉强度小于钢筋规定的抗拉强度的1.10倍时,应判定该批接头为不合格品。 注:当接头试件虽断于焊缝或热影响区,呈脆性断裂,但其抗拉强度大于或等于钢筋规定的抗拉强度的1.10倍时,可按断于焊缝或热影响区之外,呈延性断裂同等对待。 5.1.8 闪光对焊接头、气压焊接头进行弯曲试验时,应将受压面的金属毛剌和镦粗凸起部分消除,且应与钢筋的外表齐平。 弯曲试验可在万能试验机、手动或电动液压弯曲试验器上进行,焊缝应处于弯曲中心点,弯心直径和弯曲角应符合表5.18的规定。 表5.1.8接头弯曲试验指标 5pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 钢筋牌号 弯心直径 弯曲角(0) HPB235 2 d 90 HRB335 4 d 90 HRB400 5 d 90 RRB400 HRB500 7 d 90 注:1 为钢筋直径(mm); 2 直径大于25 mm的钢筋焊接接头,弯心直径应增加1倍钢筋直径。 0当试验结果,弯至90,有2个或3个试件外侧(含焊缝和热影响区)末发生破裂,应评定该批接头弯曲试验合格。 当3个试件均发生破裂,则一次判定该批接头为不合格品。 当有2个试件发生破裂,应进行复验。 复验时,应再切取6个试件。复验结果,当有3个试件发生破裂时,应判定该批接头为不合格品。 注:当试件外侧横向裂纹宽度达到0.5 mm时,应认定已经破裂。 6e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 钢筋闪光对焊接头检验批质量验收 记录 混凝土 养护记录下载土方回填监理旁站记录免费下载集备记录下载集备记录下载集备记录下载 工程名称 验收部位 施工单位 批号及批量 施工执行标准 钢筋焊接及验收规程 钢筋牌号及直径(mm) 名称及编号 JGJ18,2003 项目经理 施工班组组长 主监理(建设)质量验收规程的规定 施工单位检查评定记录 控单位验收记录 项1 接头试件拉伸试验 5.1.7 目 2 接头试件弯曲试验 5.1.8 一 监理(建设)施工单位检查评定记录 质量验收规程的规定 般单位验收记录 抽检数 合格数 不合格 项1 接头处不得有横向裂 5.3.2 目 纹; 2 与电极接触处的钢筋 5.3.2 表面不得有明显烧伤 3 接头处的弯折角不得 5.3.2 0大于3 4 接头处的轴线偏移不 得大于钢筋直径的0.15.3.2 倍,且不得大于2mm 项目专业质量检查员: 施工单位检查评定结果 年 月 日 监理工程师(建设单位项目专业技术负责人): 监理(建设)单位验收结论 年 月 日 注:1 一般项目质各小检查评定不合格时,在小格内打×记号; 2 本表由施工单位项目专业检查员填写,监理工程师(建设单位项目专业技术负责人)组 织项目专业质量检查员等进行验收 7pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 1.4 钢筋电弧焊接头: 1.4.1电弧焊接头的质量检验,应分批进行外观检查和力学性能检验,并应按下列规定作为一个检验批: a. 在现浇混凝土结构中,应以300个同牌号钢筋、同型式接头作为一批;在房屋结构中,应在不超过二楼层中300个同牌号钢筋、同型式接头作为一批。每批随机切取3个接头进行拉伸试验。 b. 在装配式结构中,可按生产条件制作模拟试件,每批3个接头进行拉伸试验。 c. 钢筋与钢板电弧搭接焊接头可只进行外观检查 d. 在现场安装条件下,每一至二楼层中以300个同接头型、同钢筋级别的接头作为一批;不足300时,仍作为一批。 1.4.2电弧焊接头外观检查结果,应符合下列要求; a. 焊缝表面应平整,不得有凹陷或焊瘤; b. 焊接接头区不得有肉眼可见的裂纹; c. 咬边深度、气孔、夹渣等缺陷允许值及接头尺寸的允许偏差,应符合规定; 接头型式 单名称 位 搭接焊钢筋与坡口焊 窄间隙帮条焊 钢板搭接焊接 焊接熔槽帮条焊 帮条接头中心线的纵向偏移 mm 0.3d , , 接头处弯折角 0 3 3 3 接头处钢筋轴线的偏移 mm 0.1d 0.1d 0.1d 焊缝厚度 mm ,0.05d ,0.05d , 0 0 焊缝宽度 mm ,0.1d ,0.1d , 0 0 焊缝长度 mm ,0.3d ,0.3d , 横向咬边深度 mm 0.5 0.5 0.5 在长2d焊缝表面上的数量 个 2 2 , 2 气孔及夹渣 面积 mm6 6 , 在全部焊缝表面上的气数量 个 , , 2 2 孔及夹渣 面积 mm, , 6 注:d 为钢筋直径(mm) 8e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to d.坡口焊、熔槽帮条焊和窄间隙焊接头的焊缝余高不得大于3mm。 4.3当模拟试件试验结果不符合要求时、应进行复验。复验应从现场焊接头中切取,其数量和要求与初始试验时相同。 钢筋电渣压力焊接头检验批质量验收记录 工程名称 验收部位 施工单位 批号及批量 施工执行标准 钢筋焊接及验收规程 钢筋牌号及直径(mm) 名称及编号 JGJ18,2003 项目经理 施工班组组长 主监理(建设)质量验收规程的规定 施工单位检查评定记录 控单位验收记录 项1 接头试件拉伸试验 5.1.7 目 一 施工单位检查评定记录 监理(建设)质量验收规程的规定 般单位验收记录 抽检数 合格数 不合格 项1 焊缝表面应平整,不得 5.4.2 目 有凹陷或焊瘤 2 焊接接头区不得有肉 5.4.2 眼可见的裂纹 3 咬边深度、气孔、夹渣 等缺陷允许值及接头5.4.2 尺寸的允许偏差 4 焊缝余高不得大于3mm 5.4.2 项目专业质量检查员: 施工单位检查评定结果 年 月 日 监理工程师(建设单位项目专业技术负责人): 监理(建设)单位验收结论 年 月 日 注:1 一般项目质各小检查评定不合格时,在小格内打×记号; 2 本表由施工单位项目专业检查员填写,监理工程师(建设单位项目专业技术负责人)组 织项目专业质量检查员等进行验收 9pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 1.5钢筋电渣压力焊接头 1.5.1电渣压力焊接头的质量检验,应分批进行外观检查和力学性能检验,并应按下列规定作为一个检验批: 在现浇混凝土结构中,应以300个同牌号钢筋、同型式接头作为一批;在房屋结构中,应在不超过二楼层中300个同牌号钢筋、同型式接头作为一批。每批随机切取3个接头进行拉伸试验。 1.5.2电渣压力焊接头外观检查结果,应符合下列要求: a. 四周焊包凸出钢筋表面的高度应大于或等于4mm。 b. 钢筋与电极接触处,应无烧伤缺陷; 0c. 接头处的弯折角不得大于3; d. 接头处的轴线偏移不得大于钢筋直径的0.1倍,且不得大于2mm。 e. 外观检查不合格的接头应切除重焊,或采取补强焊接措施。 f.3个热轧钢筋接头试件的抗拉强度均不得小于该牌号钢筋规定的抗 2拉强度;RRB400钢筋接头试件的抗拉强度均不得小于570N/mm; 2 至少应有2个试件断于焊缝之外,并应呈延性断裂。 当达到上述2项要求时,应评定该批接头为抗拉强度合格。 当试验结果有2个试件抗拉强度小于钢筋规定的抗拉强度,或3个试件均在焊缝或热影响区发生脆性断裂时,则一次判定该批接头为不 10e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 合格品。 当试验结果有1个试件的抗拉强度小于规定值,或2个试件在焊缝或热影响区发生脆性断裂,其抗拉强度均小于钢筋规定抗拉强度的1.10倍时,应进行复验。 复验时,应再切取6个试件。复验结果,当仍有1个试件的抗拉强度小于规定值,或有3个试件断于焊缝或热影响区,呈脆性断裂,其抗拉强度小于钢筋规定的抗拉强度的1.10倍时,应判定该批接头为不合格品。 注:当接头试件虽断于焊缝或热影响区,呈脆性断裂,但其抗拉强度大于或等于钢筋规定的抗拉强度的1.10倍时,可按断于焊缝或热影响区之外,呈延性断裂同等对待。 1.5.4进行电渣压力焊和埋弧焊所需的焊剂必须提供出厂合格证。若设计对焊剂的牌号未作规定时可采用431焊剂(高锰、高硅、低氟焊剂,适合于?、?级钢筋的焊接)或其它性能相似的焊剂。 11pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 钢筋电渣压力焊接头检验批质量验收记录 工程名称 验收部位 施工单位 批号及批量 施工执行标准 钢筋焊接及验收规程 钢筋牌号及直径(mm) 名称及编号 JGJ18,2003 项目经理 施工班组组长 主监理(建设)质量验收规程的规定 施工单位检查评定记录 控单位验收记录 项1 接头试件拉伸试验 5.1.7 目 一 施工单位检查评定记录 监理(建设)质量验收规程的规定 般单位验收记录 抽检数 合格数 不合格 项1 四周焊包凸出钢筋表 目 面的高度应大于或等5.5.2 于4mm。 2 钢筋与电极接触处,应 5.5.2 无烧伤缺陷 3 接头处的弯折角不得 5.5.2 0大于3 4 接头处的轴线偏移不 得大于钢筋直径的0.15.5.2 倍,且不得大于2mm 项目专业质量检查员: 施工单位检查评定结果 年 月 日 监理工程师(建设单位项目专业技术负责人): 监理(建设)单位验收结论 年 月 日 注:1 一般项目质各小检查评定不合格时,在小格内打×记号; 2 本表由施工单位项目专业检查员填写,监理工程师(建设单位项目专业技术负责人)组 织项目专业质量检查员等进行验收 12e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 电渣压力焊接头质量缺陷分析及预防措施 项目 产生原因 预防措施 焊接钢筋端部有扭曲变形现象或焊前应先仔细检查钢筋端头,不顺直的部分应夹具安装不正确,没有夹好钢筋;夹切除或矫正;安装夹具要正确,待上下钢筋同心一、 具挤压力过大,造成钢筋错位;焊前后,上下夹钳才能同时均匀夹紧钢筋;夹好钢筋上下晃动已夹好的钢筋,使上下钢筋错后严禁晃动钢筋,以免上下钢筋错位或夹具变形钢筋位;夹具本身已变形或扭曲。 或扭曲;操作前先检查夹具是否变形及夹钳是否轴线紧固,不能用的夹具、夹钳应及时更新或修理。 偏移 焊接后夹具卸得过早,接头处熔融一套电渣压力焊机应配置5,6套夹具,目的是二、 金属没有完全固化,接头的强度和刚保证接头焊接完毕后停歇30以上再拆卸焊接夹S接 度还都很小,不能支撑上部钢筋。焊具。这不仅便于焊接工具周转,接头降温缓慢,头 接时末注意扶持上部钢筋,在焊接或同时也可使接头在拆卸夹具时增加一定强度和刚处 卸夹具时,上部钢筋晃动而造成接头度,避免上部钢筋向下歪斜。另外,焊接时或卸弯 处弯折。 夹具应用手扶持好上部钢筋,以免上部钢筋晃动,折 造成接头弯折。 挤压过程中,挤压速度过快且压力挤压时应逐渐下送钢筋,使上部钢筋把熔融的过大,把熔融的金属液体过快地挤向金属液体均匀地挤到钢筋周围,形成厚薄均匀、四周。焊接电流过大或挤压过程的时大小适中的焊包。因电渣压力焊的热效率较高, 间过长,使钢筋熔融的金属液过多,其电接电流比闪光对焊的电流小一半,宜按钢筋三、 从而造成挤压后焊包薄而大。 端头的截面面积确定焊接电流(一般取0.8,焊 20.9A/mm)。如果电流过大,会造成钢筋熔化过快,包 金属液过多,所以要选好焊接电流。另外,焊接薄 过程中要控制好时间参数。一般焊接16mm的钢而 筋,焊接时间为18;钢筋直径每增加2mm,焊,大 接时间相应延长如果2。如果焊接时间太长,也,会导致钢筋熔化过量,造成焊包过大。 焊接前没能调整好夹头的起始点,焊前应调整好夹头的起始点,保证上部钢筋能四、接使上部钢筋不能完全下送到位,与接完全下送到位;安装夹具时,下部钢筋伸出钳口头结头处不能完全结合;下部钢筋伸出钳的长度不小于70 mm,保证伸出焊剂盒底部不小合不口的长度过短,使熔融的金属液体不于60 mm,使熔融的金属液体有足够的焊剂托裹,良 能受到焊剂的正常依托;焊剂盒下部使上下钢筋能够正常结合;填装焊剂前焊剂盒底,焊包堵塞不严,使焊剂部分泄漏,金属液部要用布堵塞严实,以免焊剂从缝隙泄漏;焊前过小体流失;焊接时间短、焊接电流过小、选好焊接电流,并控制好焊接时间,应在挤压过或无顶压前过早断电,都会造成钢筋熔融程开始的同时截断电流,保证钢筋能足够熔化。 包 量过小,使钢筋不能完全结合、有效 排渣,从而不能形成正常的焊包。 13pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 电渣压力焊接头质量缺陷分析及预防措施 项目 产生原因 预防措施 钢筋端面不平整,在挤压时不能把施焊前注意检查钢筋端面是否平整,不平的应熔融的金属液体均匀向四周排挤;焊切除或矫正;安装 焊剂盒时应保持钢筋居于焊 剂填装不均匀或焊剂内有杂质,不能剂盒中心,钢筋四周均匀填装焊剂,对回收的焊五、焊形成均匀的渣池;电弧电压过高,产剂应除净杂质后再用;焊前选择好合适的焊接参包不生偏弧现象,使钢筋的端面不均匀熔数,控制好焊机电弧电压,一般在进入电弧稳定匀偏化,没有呈微凸形,钢筋熔液一侧偏燃烧过程时,电压为40,50V,当进入造渣过程包或少或偏多;焊接时间短,钢筋熔化不时,电压为22,27V;掌握好焊接时间,使钢筋无包 完全,部分钢筋端面熔化量不足;焊完全熔化;填装焊剂前,要把焊剂盒底部与钢筋 剂盒堵塞不严,熔化金属流失,形成之间的缝隙堵严,以免焊剂和金属熔液流失。 焊包不匀、偏包或无包现象。 焊剂受潮,焊接时从焊剂中排出的焊接前应先把焊剂烘干;掌握好焊接断电和挤气体进入金属熔液形成气孔;挤压过压和挤压时间,断电应与挤压同时开始,此时上 程时间长,上部钢筋端面不能呈微凸部钢筋端面上形成一层介于固态和液态之间的薄形,端面上不能形成 由液态向固态层,通过挤压排出焊渣和其他杂质;填装焊剂时六、焊转化的薄层,挤压过程中不能顺利排应把焊剂盒装满,以使焊接部位埋入焊剂深度满包有渣;焊接过程结束量没有及时进行顶足要求(一般不小于60 mm)。 气孔、压,造成部分钢筋熔液固化,使焊渣夹渣 不能排出;焊接部位埋入焊剂的深度 不够,使焊渣不能通过焊剂顺利排出,并且金属液体与空气接触易形成气孔。 焊剂盒底部缝隙堵塞不严,致使钢装焊剂前应把焊剂盒底部缝隙堵严;每个接头 筋熔液顺缝流下;焊后回收焊剂过焊完后应停歇20,30(寒冷地区可适当延长),,七、焊早,熔液还未完全固化形成焊包。 待熔液稍冷却固化后再回收焊剂。 包下淌 八、钢电极钳没有夹紧钢筋,接触不良;焊接前应检查电极钳是否夹紧钢筋,发现没有筋(电电极钳与钢筋接触处己锈蚀或有泥夹紧的应夹好;夹电极钳前应先把钢筋上的锈和极钳污,导电不良。 泥污除净。 与钢筋接触处) 烧伤 焊接操作人员必须经过严格的考核,取得有效的焊工上岗合格证并能熟练操作;焊接夹具应有 足够的刚度,在最大允许荷载下移动灵活,操作方便;所选焊剂要合格,一般应采用431型焊剂,因该焊剂含高锰、高硅与低氟成分,除起隔绝、保温及稳定电弧作用外,还能起补充熔渣、脱氧及添加金元素的作用,使焊缝金属合金化。 14e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 钢筋气压焊接头: 气压焊接头的质量检验,应分批进行外观检查和力学性能检验,并应按下列规定作为一个检验批: 在现浇混凝土结构中,应以300个同牌号钢筋接头作为一批;在房屋结构中,应在不超过二楼层中300个同牌号钢筋接头作为一批。当不足300个接头时,仍应作为一批。 在柱、墙的竖向钢筋连接中,应从每批随机切取3个接头进行拉伸试验。 1.6.1气压焊接头应逐个进行外观检查。当进行力学性能试验时,应从每批接头中随机切取3个接头做拉伸试验;在梁、板的水平钢筋连接中,应另切取3个接头做弯曲试验,且应按下列规定抽取试件; a. 在一般构筑物中,以300个接头作为一批; b. 在现浇钢筋砼房屋结构中,同一数层中应以300个接头作为一批;不足300个接头作为一批; 1.6.2气压焊接头外观检查结果应符合下列要求: a. 偏心量е不得大于钢筋直径的0.15倍,且不得大于4mm。当不同 直径钢筋焊接时,应按较小钢筋直径计算。当大于规定值时,应 切除重焊; 0b. 两钢筋轴线弯折角不得大于4,当大于规定值时,应重新加热矫 正; c. 镦粗直d不得小于钢筋直径的1.4倍,当小此规定值时,应新加e 15pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 热镦粗; d. 镦粗长度L不得小于钢筋直径的1.2倍,且凸起部分平绥圆滑。e 当小此规定值时,应重新加热镦长; e. 压焊面偏移d不得大于钢筋直径的0.2倍。 h 1.6.3气压焊接头拉伸试验结果,3个试件的抗拉强度均不得小于该级别钢筋规定的抗拉强度,并应断于压焊面之外,呈延性断。当有1个试件不符合要求时,应切取6个试件进行复验;复验结果,当仍有1个试件不符合要求,应确认该批接头为不合格品。 1.6.4气压焊接头进行弯曲试验时,应将试件受压的凸起部消除,并应与钢筋外表面齐平。弯心直径应符合规定。 气压焊接头弯曲试验弯心直径 弯心直径 钢筋等级 d?25mm d,25mm ? 2d 3d ? 4d 5d ? 5d 6d 注:d为钢筋直径(mm)。 弯曲试验可在万能试验机、手动或电动液压弯曲试验器上进行;压焊 0面应处在弯曲中心点,弯至90,3个试件均不得在压焊面发生破断。 当试验结果有1个试件不符合要求,应再切取6个试件进行复验。复验结果,当仍有1个试件不符合要求,应确认该批接头为不合格品。 16e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 17 预埋件钢筋T型接头: 17.1预埋件钢筋T型接头的外观检查,应从同一台班内完成的同一类型预埋件中抽查10,,且不得少于10件。 17.2当进行力学性能试验时,应以300件同类型预埋件作为一批。一周内连续焊接时,可累计计算。 当不足300件时,亦应一批计算。应从每批预埋件中随机切取3个试件进行拉伸试验;试件的钢筋长度应大于或等200mm,钢板的长度和宽度均应大于或等于60mm。 17.3预埋件钢筋手工电弧焊接头外观检查结果应符合下列要求: a. 当采用I级钢筋时,角焊缝焊脚k不得小于钢筋直径的0.5倍;采用?级钢筋时,角焊缝焊脚k不得小于钢筋直径的0.6倍。 穿孔塞焊焊缝表面平顺,局部下凹不得大于1mm; b. c. 焊缝不得有裂纹; d. 焊缝表面不得有3个直径大于1.5mm的气孔; e. 钢筋咬边深度不得超过0.5mm; 0f. 钢筋相对钢板的直角偏差不得大于4; g. 钢筋间距偏差不应大于10mm。 h.预埋件外观检查结果,当有1个接头不符合上述要求时,应逐个进行检查,并剔出不合格品接头经焊补后可提交二次验收。 17.4预埋件钢筋T形接头3个试件拉伸试验结果,其抗拉强度应符合下列要求: a(I级钢筋接头均不得小于350Mpa; b(?级钢筋接头均不得小于490Mpa。 pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t17 当试验结果有1个试件的抗拉强度小于规定值时,应再取6个试件进行复验。复验结果,当仍有1个试件的抗拉强度小于规定值时,应确认该批接头为不合格品。对于不合格品采取补强焊接后,可提交二次验收。 18 钢筋机械连接 18.1工程中应用钢筋机械连接时,应由该技术提供单位提交有效的机械连接型式检验报告。 18.2钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行接头工艺检验,工艺检验应符合下列要求: 18.2.1每种规格钢筋的接头试件不应少于3根; 18.2.2钢筋母材抗拉强度试件不应少于3根,且应取自接头试件的同一根钢筋; 18.2.3. 3根接头试件的抗拉强度均应符合规程表3.0.5的规定;对于?级接头,试件抗拉强度尚应?钢筋抗拉强度实测值的0.95倍;对于?级接头,应大于0.90倍。 18.3现场检验应进行外观质量检查和单向拉伸试验。对接头有特殊要求的结构。应在设计图纸中另行注明相应的检验项目。 18.4接头的现场检验按验收批进行。同一施工条件下采用同一批材料的同等级、同型式、同规格接头,以500个为一个验收批进行检验与验收,不足500个也作为一个验收批。 18.5对接头的每一验收批,必须在工程结构中随机截取3个试件作抗拉强度试验,按设计要求的接头等级进行评定, 18e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 当3个接头试件的抗拉强度均符合规程表3.0.5中相应等级的要求时。该验收批评为合格。 如有1个试件的强度不符合要求,应再取6个试件进行复检。复检中如仍有1个试件的强度不符合要求。则该验收批评为不合格。 18.6现场检验连续10个验收批抽样试件抗拉强度试验1次合格率为100%时,验收批接头数量可以扩大1倍。 18.7外观质量检验的质量要求、抽样数量、检验方法、合格标准以及螺纹接头所需的最小拧紧力矩值由各类型接头的技术规程确定。 18.8现场截取抽样试件后,原接头位置的钢筋允许采用同等规格的钢筋进行搭接连接,或采用焊接及机械连接方法补接。 18.9对抽检不合格的接头验收批,应由建设方会同设计等有关方面研究后提出处理 方案 气瓶 现场处置方案 .pdf气瓶 现场处置方案 .doc见习基地管理方案.doc关于群访事件的化解方案建筑工地扬尘治理专项方案下载 。 19.带肋钢筋套筒挤压连接技术: 19.1冷挤压钢套筒技术要求: 19.1.1 冷挤压套筒材料的力学性能 项目 力学性能指标 2 屈服强度(N?mm) 225,350 2 抗拉强度(N?mm) 375,500 延伸率δ(%) ?20 5 硬 度(HRB) 60,80 或(HB) 102,133 19.1.2 冷挤压套筒尺寸的允许偏差(mm) 套筒外径外径允许偏壁厚(l)允许偏差 长度允许偏差 D 差 ?50 ,.,0.5 ,0.12L ,0.10L ,.,2 19pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t >50 ,.,0.01D ,0.12L ,0.1L ,.,2 19.1.3 冷挤压钢套筒规格型号 套筒尺寸(mm) 套筒 压接标 理论重量 型号 志道数 (k,) 外径 壁厚 长度 G40 70 12 250 8Χ2 4.37 G36 63.5 11 220 7Χ2 3.14 G32 57 10 200 6Χ2 2.31 G28 50 8 190 5Χ2 1.58 G25 45 7.5 170 4Χ2 1.18 G22 40 6.5 140 3Χ2 0.75 G20 36 6 130 3Χ2 0.58 G18 34 5.5 125 3Χ2 0.47 19.2材料验收时应符合下列要求: 19.2.1冷挤压钢套筒应具有出厂合格证。钢套筒的表面均应有明显标志。钢套筒原材料应有质保书。 19.2.2进入施工现场钢套筒均按规格、型号分别堆放,并按其批号进行查对标志,外观检查,合格后方可使用; 19.7挤压接头的施工现场检验与验收: 19.3.1工程中应用带肋钢筋套筒挤压接头时,应由该技术提供单位提交有效的型式检验报告。 19.3.2钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行挤压连接工艺检验,工艺检验应符合下列要求: 19.3.3每种规格钢筋的接头试件不应少于三根; 19.3.4对接头试件的钢筋母材应进行抗拉强度试验; 19.3.5三根接头试件的抗拉强度均应满足规程的强度要求;对于A级 0接头,试件的抗拉强度尚应大于等于0.9倍钢筋母材的实际f(钢st0 20e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 筋抗拉强度实测值)。计算实际抗拉强时,应采用钢筋的实际横截面面积。 19.3.6现场检验应对挤压连接头进行外观质量检查和单向拉伸试验。对挤压接头有特殊要求的结构。应在设计图纸中另行注明相应的检验项目。 19.3.7挤压接头的现场检验按验收批进行。同一施工条件下采用同一批材料的同等级、同型式、同规格接头,以500个为一个验收批进行检验与验收,不足500个也作为一个验收批。 19.3.8对每一验收批,均应按设计要求的接头性能等级,在工程结构中随机截取3个试件作单向拉伸试验。按设计要求的接头性能等级进行检验与评定,并按规程(附录A)规定的格式记录。 当3个试件单向拉伸试验结果均符合现行行业标准《钢筋机械连接通用技术规程》JGJ107(表3.0.5)的强度要求时。该验收批评为合格。 如有1个试件的强度不符合要求,应再取6个试件进行复检。复检中如有1个试件试验结果不符合要求。则该验收批评为不合格。 19.3.9挤压接头的外观质量检验应符合下列要求: 19.3.9.1外形尺寸:挤压后套筒长度应为原套筒长度的1.10,1.15;或压痕处套筒的外径波动范围为原套筒外径的0.8,0.90倍; 19.3.9.2挤压接头的压痕道数应符合型式检验确定的道数; 19.3.9.3接头处弯折不得大于4度; 19.3.9.4挤压后的套筒不得有肉眼可见裂缝。 19.3.9.5每一验收批中应随机抽取10%的挤压接头作外观质量检验, 21pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 如外观质量不合格数少于抽检数的10%,则该批挤压接头外观质量评为合格。当不合格数超过抽检数的10%时,应对该批挤压接头逐个进行复检,对外观不合格的挤压接头采取补救措施;不能补救的挤压接头应作标记,在外观不合格的挤压接头中抽取六个试件作抗拉强度试验,若有一个试件的抗拉强度低于规定值,则该批外观不合格的挤压接头,应会同设计单位商定处理,并记录存档。 19.3.9.6在现场连续检验10个验收批。其全部单向拉伸试件一次抽样均合格时。验收批接头数量可扩大一倍。 20镦粗直螺纹钢筋接头: 20.1技术要求: 20.2性能要求: (A)镦粗直螺纹钢筋接头的性能应满足强度和变形两方面的要求,其检验指标应符合要求。 (B)镦粗直螺纹钢筋接头用于直接承受动力荷载的结构时,尚应具有设计要求的抗疲劳性能。 20.3使用要求 (A) 丝头 不同工况下,丝头应满足下列使用要求: (a)适用于加长标准型接头的丝头,其长度应为1,2套筒长度,公差为,Lp(P为螺距)以保证套在接头的居中位置。 (b)适用于加长型接头的丝头,其长度应大于套筒长度,以满足只转动 22e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 套筒进行钢筋连接的要求。 (B) 套筒:不同工况下,套筒应满足下列使用要求: (a) 标准型套筒应便于正常情况下连接钢筋; (b) 变径型套筒应满足不同直径钢筋连接要求; (c) 扩口型套筒应满足钢筋较难对中工况下,便于入扣连接。 20.3材料要求: 20.3.1用于镦粗的钢筋应符合现行国家标准GB1499的要求。 20.3.2套筒与锁母材料宜使用优质碳素结构钢或合金结构钢。应有供货单位质量保证书。 20.4试验方法:施工现场仅对接头试件进行单向拉伸强度试验,试验按GB,T228进行。 20.5检验规则: 20.6检验分类: 接头性能检验分型式检验和施工现场检验两类。 套筒检验出厂检验;丝头检验为加工现场检验。 20.7接头型式检验: 20.8在下列情况下进行型式检验: (a) 接头产品需要鉴定,确定其性能等级时; (b) 材料、工艺、规格进行改动时; (c) 套筒加工单位停产一年以上时; 23pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t (d) 质量监督部门提出专门要求时。 20.9型式检验的内容与性能指标应符合要求。 20.10对每种型式、级别、规格、材料、工艺的机械连接接头,型式检验试件不应少于9个;其中单向拉伸试件不应少于3个,高应变形反复拉压试件不应少于3个。同时,尚应取同批、同规格钢筋试件三根做力学性能试验。 20.11型式检验的加载制度,应按规定进行,其合格条件为: (a)强度试验:每个试件的实测值均应符合规定的检验指标; (b)极限应变、残余变形的检验:每组试件的实测平均值均应符合规定的检验指标。 20.12型式检验应由国家、省部级主管部门认可的检测机构进行,并应出具试验报告和评定结论。 20.13接头的施工现场检验: 20.14技术提供单位应向使用单位提交有效的型式检验报告。 20.15钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行接头工艺检验,工艺检验应符合下列要求: (a)每种规格钢筋的接头试件不应少于3根; (b)对接头试件的钢筋母材应进行抗拉强度试验; (c)3根接头试件的抗拉强度除均应满足强度要求外,尚应大于等 0于.095倍钢筋母材的实际f(钢筋抗拉强度实测值)。计算实际抗拉st0 24e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 强时,应采用钢筋的实际横截面面积。 20.16现场检验应进行外观质量检查和单向拉伸试验。 20.17接头的现场检验按验收批进行。同一施工条件下采用同一批材料的同等级、同型式、同规格接头,以500个为一个验收批进行检验与验收,不足500个也作为一个验收批。 20.18对接头的每一验收批,必须在工程结构中随机截取3个试件作单向拉伸强度试验,并按规定的强度要求确定其性能等级。 当3个试件单向拉伸试验结果均符合规定的强度要求时。该验收批评为合格。 如有1个试件的强度不符合要求,应再取6个试件进行复检。复检中如仍有1个试件试验结果不合格,则该验收批评为不合格。 2.0.19在现场连续检验10个验收批。其全部单向拉伸试件一次抽样均合格时。验收批接头数量可扩大一倍。 21钢筋锥螺纹接头技术: 21.1工程中应用施工现场检验与验收: 21.1.1工程应用钢筋锥螺纹接头时,技术提供单位应向使用单位提交有效的型式检验报告。 21.1.2连接钢筋时,应检查连接套出厂合格证,钢筋螺纹加工检验记录。 21.1.3钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行接 25pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 头工艺检验,工艺检验应符合下列要求: (1) 每种规格钢筋母材应进行抗拉强度试验; (2)每种规格钢筋的接头试件不应少于三根; (3)接头试件的抗拉强度均应满足规程的强度要求;对于A级接头,试 0件的抗拉强度尚应大于等于0.9倍钢筋母材的实际f(钢筋抗拉强st0度实测值)。计算实际抗拉强时,应采用钢筋的实际横截面面积。 21.1.4随机抽取同规格接头数的10%进行外观检查,应满足钢筋与连接套的规格一致,接头丝扣无完整丝扣外露。 21.1.5用质量的力矩扳手,按规定的接头拧紧值抽检接头的连接质量。抽检数量:梁、柱构件按接头数的15%,且每个构件的接头抽检数不得少于一接头;基础、墙、板构件按各自接头数,每100个接头作为一个验收批,不足100个也作为一个验收批,每批抽检3个接头。抽检的接头应全部合格,如有一个接头不合格,则该验收批接头应逐个检查,对查出的不合格接头应进行补强,并按规定填写接头记录。 21.1.6接头的现场检验按验收批进行。同一施工条件下采用同一批材料的同等级、同型式、同规格接头,以500个为一个验收批进行检验与验收,不足500个也作为一个验收批。 21.1.7对接头的每一验收批,应在工程结构中随机截取3个试件作单向拉伸试验。按设计要求的接头性能等级进行检验与评定,并按规程(附录C)规定填写接拉伸强度试验报告。 26e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 21.1.8在现场连续检验10个验收批。其全部单向拉伸试件一次抽样均合格时。验收批接头数量可扩大一倍。 22直螺纹套筒接头 随着钢筋砼结构在建筑工程应用的日益广泛,粗直径钢筋的连接方法成为结构设计与施工的关健之一。钢筋机械连接的应用,一定程度上解决了粗径钢筋连接的问 快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题 ,与传统的焊接工艺相比,具有如下优点: (1)连接质量稳定、可靠、连接强度高; (2)操作简单,施工速度快; (3)适用范围广,适用于各种方位同、异直径钢筋的连接 (4)钢筋的化学成分对连接质量无影响; (5)接头质量受人为因素影响小; (6)现场施工不受气候条件影响; (7)节省能源、耗电低; (8)无污染、无火灾及爆炸隐患,施工可靠。 22.1直螺纹连接技术 等强度直螺纹连接类型:直接滚压直螺纹、挤(碾)压肋滚压螺纹、剥肋滚压螺纹3种类型,这3种类型连接获得的螺纹精度及尺寸不同,接头质量也存在一定差异。 1. )直接滚压直螺纹连接施工工艺为:平头?直接滚压螺纹?丝头检验 27pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t ?完成。该技术优点是:螺纹加工简单;设备投入少。不足的是:螺纹精度差,存在虚假螺纹现象;由于钢筋粗细不均,加工的螺纹的螺纹直径大小不一,给现场施工造成困难。有的因配合太紧不能入扣。钢筋直径变化使滚丝轮寿命降低,增加接头附加成本。 2. )挤(碾)压肋滚压直螺纹连接 用专用挤压设备滚轮先将钢筋的横肋和纵肋进行预压平处理,然后再滚压螺纹。其目的是减轻钢筋肋对成型螺纹精度的影响。施工工艺为:平头?挤(碾)钢筋横纵肋(反复数次)?滚压螺纹?丝头检验?利用套筒连接? 接头检验?完成。该技术成型螺纹精度相对直接滚压有一定提高,但仍不能从根本上解决钢筋直径大小不一致对成型螺纹精度的影响;螺纹加工需要两道工序、两套设备完成,给丝头加工带来麻烦。 3. )钢筋等强度剥肋滚压直螺纹连接从根本上解决钢筋粗细不均对螺纹精度的影响,简化丝头加工工序,方便现场施工。先将钢筋的横肋和纵肋进行剥切处理后,使钢筋滚丝前的柱体直径达到同一尺寸,然后再进行螺纹滚压成型。通过对现有?级钢筋和新?级钢筋的型式试验、疲劳试验、耐低温试验以及大量工程应用,证明接头性能不仅达到了JGJ107,96《钢筋机械连接通用技术规程》中A级接头性能要求,实现了等强度连接,而且接头过有优良的抗疲劳性能及 0抗低温性能,通过200万次疲劳试验接头处于无破坏,在,40C低温下试验,接头仍能达到与母材等强连接。剥肋滚压直螺纹连接技 28e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 术适用于直径为16,40,,?、?级钢筋在任意方向和位置的同、异径连接,可应用于要充分发挥钢筋强度或对接头延性要求高的砼结构、对疲劳性能要求高的砼结构、以低温条件下施工的砼结构。 其施工工艺为:平头 ? 剥肋滚压螺纹 ? 丝头检验 ? 利用套筒连接 ? 接头检验 ? 完成。 丝头加工过程是:将待加工钢筋夹持在设备的台钳上,开动机器,扳动进给装置,动力头向前移动,开始剥肋滚压螺纹,待滚压到调定位置后,设备自动停机并反转,将钢筋端部退出动力头,扳动进给装置将设备复位,钢筋丝头即加工完成。 连接套筒有4种形式,分别是标准型套筒、正反丝扣型套筒、变径型套筒、可调型套筒。标准型套筒主要用于相同直径可转动钢筋的连接;正反丝扣型套筒用于两端钢筋不能转动但至少有一根可以轴向移动的钢筋连接,如拐铁钢筋的施工;变径型套筒用于不同直径钢筋的连接;可调型套筒用于两端不能转动的钢筋连接,也可用于拐铁处钢筋的连接,当两钢筋轴向位置不能移动时只能使用此种接头形式。 22.2接头的应用 22.2.1接头性能等级的选定应符合下列规定: (1)砼结构中要求充分发挥钢筋强度或对接头延性要求较高的部位,应采用A級接头; (2)砼结构中钢筋受力小或对接头延性要求不高的部位,可采用B级接头; 29pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t (3)非抗震设防和不承受动荷载的砼结构中钢筋只承受压力的部位,可用C级接头。 1.8.10.2.2钢筋连接件的砼保护层厚度宜満足国家现行标准《砼结构设计规范》中受力钢筋砼保护层最小厚度的要求,且不得小于15mm。連接件之间的横向净距不宜小于25mm。 1.8.10.2.3受力钢筋机械连接接头的位置应相互错开。在任一接头中心至长度为钢筋直径35倍的区段范围内,有接头的受力钢筋截面面积占受力钢筋总截面面积的百分率,应符合下列规定: 1.8.10.2.4受拉区的受力钢筋接头百分率不宜超过50%; 1.8.10.2.5在受拉区的钢筋受力小的部位,A级接头百分率可不受限制; 1.8.10.2.6接头宜避开有抗震设防要求的框架的梁端和柱端的箍筋加密区;当无法避开时,接头应采用A级,且接头百分率不应超过50%; 1.8.10.2.7受压区和装配式构件中钢筋受力较小部位,A级和B级接头百分率可不受限制。 1.8.10.2.8当对具有钢筋接头的构个进行试验并取得可靠数据时,接头的应用范围可根据工程实际情况进行适当调整。 1.8.10.3材料要求: (1)用于接头的钢筋应符合现行国家标准GB1499的要求,具有产品合格证,并经现场抽样送检合格。 (2)套筒材料采用45号钢,并符合GB699-88《优质碳素结构钢技术条件》的规定或合金结构钢。应有供货单位质量保证书,并有复检报告。主要参数如热处理状态、螺距、牙型高度、牙型角、公称直径等均应符合有关规定 (a)套筒材料的机械性能 屈服强度δ?355ΜP;抗拉强度δ?600Sª,ΜP;延伸率δ?16%。 ªS (b)螺纹套筒规格应符合表1、表2的规定,必须有出厂合格证。 30e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 表1 等径螺纹套筒的基本尺寸 ,, 钢筋直径 , ,? ,? 18 18.2 28 50 20 20.2 32 54 22 22.2 36 58 25 25.2 40 62 28 28.2 44 66 32 32.2 50 74 36 36.2 56 82 40 40.2 62 90 表2异径螺纹套筒的基本尺寸 ,, 钢筋直径 ,,? ,? ,? 1 2 20/18 20.2 18.2 32 54 22/20 22.2 20.2 36 58 25/22 25.2 22.2 40 62 28/25 28.2 25.2 44 66 32/28 32.2 28.2 50 74 36/32 36.2 32.2 56 82 40/36 40.2 36.2 62 90 表3钢筋端头外螺纹套筒的基本尺寸 ,, 钢筋直径18 20 22 25 28 32 36 40 , 18. 220.2 22.2 25.2 28.2 32.2 36.2 40.2 , 29 31 33 35 37 41 45 49 1.8.10.3.4试验方法:施工现场仅对接头试件进行单向拉伸强度试验,试验按GB,T228进行。 1.8.10.4检验规则: 1.8.10.4.1.检验分类:接头性能检验分型式检验和施工现场检验两 31pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 类。 套筒检验出厂检验;丝头检验为加工现场检验。 接头型式检验:在下列情况下进行型式检验: (a)接头产品需要鉴定,确定其性能等级时; (b)材料、工艺、规格进行改动时; (c)套筒加工单位停产一年以上时; (d)质量监督部门提出专门要求时。 1.8.10.4.2型式检验的内容与性能指标应符合要求。 1.8.10.4.3对每种型式、级别、规格、材料、工艺的机械连接接头,型式检验试件不应少于9个;其中单向拉伸试件不应少于3个,高应变形反复拉压试件不应少于3个。同时,尚应取同批、同规格钢筋试件三根做力学性能试验。 1.8.10.4.4型式检验的加载制度,应按规定进行,其合格条件为: (a)强度试验:每个试件的实测值均应符合规定的检验指标; (b)极限应变、残余变形的检验:每组试件的实测平均值均应符合规定的检验指标。 1.8.10.4.5型式检验应由国家、省部级主管部门认可的检测机构进行,并应出具试验报告和评定结论。 1.8.10.4.6接头的施工现场检验: (1)技术提供单位应向使用单位提交有效的型式检验报告。 32e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to (2)钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行接头工艺检验,工艺检验应符合下列要求: (a)每种规格钢筋的接头试件不应少于3根; (b)对接头试件的钢筋母材应进行抗拉强度试验; (c)3根接头试件的抗拉强度除均应满足强度要求外,尚应大于等于 00.95倍钢筋母材的实际f(钢筋抗拉强度实测值)。计算实际抗拉强st0 时,应采用钢筋的实际横截面面积。 (3)对接头的每一验收批,必须在工程结构中随机截取3个试件作单向拉伸强度试验,并按规定的强度要求确定其性能等级。 当3个试件单向拉伸试验结果均符合规定的强度要求时。该验收批评为合格。 如有1个试件的强度不符合要求,应再取6个试件进行复检。复检中如仍有1个试件试验结果不合格,则该验收批评为不合格。 (4)在现场连续检验10个验收批。其全部单向拉伸试件一次抽样均合格时。验收批接头数量可扩大一倍。 工程中应进行施工现场检验与验收: (5)工程应用钢筋螺纹接头时,技术提供单位应向使用单位提交有效的型式检验报告。 (6)螺纹套筒进场应有出厂合格证,连接钢筋时应检查连接套筒表面不得有裂缝、节疤等缺陷,内螺纹不得缺牙、错牙、钢筋螺纹加工检验 33pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 记录。钢筋外螺纹的牙完好率应?95%。 (7)钢筋连接工程开始前及施工过程中,应对每批进场钢筋进行接头工艺检验,工艺检验应符合下列要求: (a). 每种规格钢筋母材应进行抗拉强度试验; (b)每种规格钢筋的接头试件不应少于三根; (c).接头试件的抗拉强度均应满足规程的强度要求;对于A级接头, 0试件的抗拉强度尚应大于等于0.9倍钢筋母材的实际f(钢筋抗拉st0强度实测值)。计算实际抗拉强时,应采用钢筋的实际横截面面积。 (8)随机抽取同规格接头数的10%进行外观检查,应满足钢筋与连接套的规格一致,钢筋端头螺纹旋入螺套后,允许外露1,1.5牙。 (9)按规定的接头拧紧值抽检接头的连接质量。抽检数量:梁、柱构件按接头数的15%,且每个构件的接头抽检数,现场检验应进行外观质量检查和单向拉伸试验。 (10)接头的现场检验按验收批进行。同一施工条件下采用同一批材料的同等级、同型式、同规格接头,以500个为一个验收批进行检验与验收,不足500个也作为一个验收批。 不得少于一接头;基础、墙、板构件按各自接头数,每100个接头作为一个验收批,不足100个也作为一个验收批,每批抽检3个接头。抽检的接头应全部合格,如有一个接头不合格,则该验收批接头应逐个检查,对查出的不合格接头应进行补强,并按规定填写接头记录。 34e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to (11)对接头的每一验收批,应在工程结构中随机截取3个试件作单向拉伸试验。按设计要求的接头性能等级进行检验与评定,并按规程规定填写接拉伸强度试验报告。 1.8.10.4.7在现场连续检验10个验收批。其全部单向拉伸试件一次抽样均合格时。验收批接头数量可扩大一倍。 2.核查办法: 2.1核查每一份检验中试验项目,内容是否按规定的格式填写完整,试件取样数量是否符合要求,试验结果及结论是否正确。 2.2对照单位工程钢筋接头汇总表,核查钢材焊接是否规定逐批抽样试验,批量总和是否与需用量基本一致。 2.3采用电弧焊和埋弧焊、电渣压力焊、机械连接的接头等,就分别核查焊条、焊剂、连接件等的出厂合格证或试验报告是否符合要求。 2.4.核查进口钢材提供的资料是否符合有关规定。 2.5.核查钢结构工程的焊接工艺试验、焊缝无损检测是否符合设计及有关标准、规范、规程要求。 2.6.对照施工技术资 料,核查接头有否先隐蔽,后提供试验报告。 2.7.核查是否按规定进行见证取样试验。 2.8.检查操作人员是否持证上岗证。 3.核定原则: 主要受力构件的接头,凡出现下列情况之一,本项目核定为“不 pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t35 符合要求”: 3.1.无按规定提供试验报告。 3.2.钢材接头力学性能试(检)验报告中,缺少主要项目或任一指标不符合检验标准,又未按规定进行复验,且无鉴定处理。 3.3.焊接或机械连接试(检)验报告所代表的批量之和明显少于实际接头数量。 3.4.电弧焊和埋弧焊、电渣压力焊、机械连接接头所用焊条、焊剂、连接件无合格证及试验报告,或连接件的性能不符合设计及有关标准、规范、规程要求。 3.5.进口钢材焊前没做化学成分检验或化学成分检验报告中的C、S、P、Mn元素的含量及碳当量不符合有关规定,且没做可焊性试验。 二、直螺纹连接接头的质量控制要点 1、对原材料的质量控制 直螺纹连接的钢筋原材料进场后,要按批进行验收,检查钢材进场材质证明,钢筋上应有标识牌钢筋应平直、无损伤,表面不得有裂纹、油污,钢筋上不得有颗粒状或片状老锈。钢筋原材料进场后须按规定复试,见证取样和送样组数不应少于试验总数量的30%,复试合格后方准使用。 2、 连接套筒的质量控制 直螺纹连接套筒一般在技术提供单位进行加工,其质量应符合有 36e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 关标准的要求,并按规定程序批准的图样和技术文件制造。 连接套筒采用纸箱包装,包装箱上应印有产品名称、规格、数量、重量生产厂名、厂址、电话;执行标准编号;合格证上标明出厂日期。 套筒进场时应审查合格证,合格证上需注明强度等级、材质、牙形角、螺纹精度、外观、规格、数量及出厂日期、质检员等。套筒外观无严重磕碰、划伤、毛剌、油污。 3、 检验的质量控制 工程中采用直螺纹连接时,应审查该技术提供单位提交的有效型式检验报告,该报告必须符合《钢筋机械连接通用技术规程》(JGJ107,1996)的规定。对每种级别、规格的直螺纹接头,型式检验试件不应少于12个,其中单向拉伸试件不应少于6个,高应力反复拉压试件不应少于3个,大变形反复抗压试件不应少于3个。同时尚应取3根同批、同规格钢筋试件做力学性能试验。 型式检验比较复杂和重要,应由国家或省部级主管部门认可的专门检测机构进行,其检验结论才能得到认可。型式检验报告中须记载送检试件中的各项参数,且检验报告仅适用于符合这些基本参数的接头产品。故型式检验报告中须记载接头试件各项基本参数,以便日后对照查证。 4、 接头工艺检验质量控制 直螺纹连接工艺开始前及施工过程中,应每批进场钢筋进行工艺检验,目的是检验接头技术提供单位所确定的工艺参数是否与本工程 f the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t37pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, consider 的进场钢筋相适应。工艺检验应符合下列要求: (1)每种规格钢筋的接头试件不应少于3根; (2)对接头试件的钢筋母材应进行抗拉强度试验; (3)根接头试件的抗拉强度均应符合《钢筋机械连接通用技术规程》(JGJ107,1996)的规定。 5、 操作工艺过程控制 (1)直螺钢筋纹连接的工艺控制 ?直螺纹连接工艺控制流程:上岗人员培训?检查待加工钢筋?滚丝机空车试转?调整滚丝机?夹装钢筋?滚轧螺纹?拧连接套筒保护帽?堆放待用。 滚轧直螺纹时应注意: (a)滚丝机操作人员经考试合格后持证上岗; (b)钢筋接头下料断面应垂直于钢筋轴线,端头不得有翘曲或马蹄形,滚轧丝扣的钢筋端头应平整,必须用无齿锯下料,而且在端部500?长度范围内应保证圆直,不允许弯曲,不允许将气割或切断机下料的端头直接加工; (c)滚轧丝扣的长度、直径、饱满度应符合要求。 ?接头连接工艺控制流程 检查滚轧螺纹外观?用专用扳手旋合钢筋?连接好的接头作标记?检查待连接的一端是否有保护帽?承包单位自检接头?接头检验批验收。 38e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to 应注意凡参与施工的操作工和技术质量人员,均应参加技术规程培训,操作工人应经考核合格后持证上岗;旋合接头时,用扳手将连接套筒拧到位,外露有效丝扣少于2扣。 (2)现场检验质量控制 现场检验亦称施工检验,是在施工现场进行的抽样检验。见证取样和送级数不应少于现场检验总数的30%。现场检验一般只进行外观质量检验和单向拉伸试验。接头的现场检验按验收批进行。同一施工条件下,采用同一批材料的同等级、同规格接头,以500个为一个验收批进行检验与验收。不足500个也作为一个验收批。对接头的同一验收批,必须在工程结构中随机截取3个试件做单向拉伸试验,按设计要求的接头性能等级进行检验与评定。当3个试件单向拉伸试验结果均符合规范规定强度要求时,该验收批评定为合格。若有1个试件的强度不符合要求,应再取6个试件进行复验,复验中若仍有1个试件试验结果不符合要求,则该检验批评为不合格。 在结构工程中,应随机截取试件为现场检验的单向拉伸试件。为提高抽样的代表性,严把质量关,应坚持在工程中随机抽取。 外观质量检验的质量要求、抽样数量、检验方法及合格标准根据各类型接头的技术规程确定上。 (3)对直螺纹丝头的验收 ?直螺纹丝头的验收 a.加工的钢筋丝头应逐个自检,对出现不合格丝头者应切去重新加工; pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t39 b.自检合格的丝头应由质检员随机抽样进行检验,以一个工作班加工的丝头为检验批,随机抽检10%,若合格率小于95%应加倍抽检,复验中合格率仍小于95%时,应对全部丝头进行逐个检验。 c.直螺纹丝头的强度应达到国家行业标准JGJ107,1996中相应等级接头的强度要求。 d.钢筋直螺纹丝头应有保护帽或连接套筒保护丝头。 ?直螺纹连接套筒的验收 a.直螺纹连接套筒应由质检员随机抽样进行检验,每批随机抽检5%,抽检合格率应大于95%,当抽检合格率小于95%时,应另抽取同样数量重新检验。当两次的平均合格率不小于95%时,应判此批合格;若合格率仍小于95%时则应对该批连接套筒逐个检验,合格者方可使用。 b.连接套筒应有合格证和材料质量证明书。 c.连接套筒一端应有塑料保护盖。塑料保护帽上应有与连接钢筋规格相同的规格标志。 ?钢筋直螺纹接头的验收 a.同一施工条件下,采用同一批材料的同等级、同型式、同规格的接头,以500个为一个验收批,不足500个的也作为一个验收批。 b.对每一验收批接头,必须在工程结构中随机截取3个试件做单向拉伸试验,当每个试件单向拉伸试验均达到强度要求时,该验收批判合格;若有1个试件的强度不合格,应再取6个试件进行复验,复验中有1个试件试验结果不合格,则此验收碧绿判为不合格。 40e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to c.套筒两端拧入连接套筒的长度应相等,差值不大于1个丝扣。 d.两端钢筋丝头应拧紧,使钢筋丝头端部顶紧。 e.拧紧的接头应做油漆标记。 6、资料的收集整理见直螺纹接头工程质量控制资料核查记录表 41pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerf the pansion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction oe lateral, intake manifold into the expansion tank should be considered order, low pressure or high pressure drop near the ex0.004) to drain. Enter the pipe should be smooth flow to th-rocess piping in the drain pipe must have a certain slope (about 0.002prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1. P lity,pport and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabiwith the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Piping su ssiblee centralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as pohe level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to generally should bshall not exceed t 钢筋机械连接工程质量控制资料核查记录 工程 施工 名称 单位 序项份核查 资料名称 号 目 数 意见 1 设计图和设计变更洽商文件 技术提供单位资质: (1)建设工业产品准用证; (2)建设部科技成果重点推广项目证书; 2 (3)企业资质证书、营业执照、技术人员、质检员、施工操作人员 的上岗证; (4)企业认证资料。 工程技术文件: 钢 (1)施工组织设计; 3 筋(2)钢筋工程施工技术方案、钢筋连接施工方案; 机(3)机械连接接头规程、机械连接施工工艺作业指导书。 械 工程物质进场检验报告: 连 (1)钢材出厂合格证、出厂质量检测报告、进场复试报告; 4 接(2)钢套筒进场应有钢材质量证明书、连接套筒产品合格证,合格工证检验的内容应齐全。 程 钢筋接头试验报告:. (1)型式检验报告; 5 (2)工艺检验报告; (3)现场检验报告。 6 钢筋安装工程检验批质量验收记录表 直螺纹钢筋丝头的检查记录 7 钢筋接头的工程 合同 劳动合同范本免费下载装修合同范本免费下载租赁合同免费下载房屋买卖合同下载劳务合同范本下载 、报审批表。 8 检查人: 时间: 42e pipeline using the small pipe to achieve thermal expansion compensation and, if necessary, considerion tank inlet. Pipe deflection and expansion must be considered the absorption problem, consider the natural direction of thdered order, low pressure or high pressure drop near the expans0.004) to drain. Enter the pipe should be smooth flow to the lateral, intake manifold into the expansion tank should be consi-ess piping in the drain pipe must have a certain slope (about 0.002. Procy, prevention of pipeline vibration displacement in operation. Process piping support and hanger spacing are shown in table 1rt and hanger set weight of the weight and its insulation shall meet reasonable piping displacement, increase system stabilitsuppo le with the platform stairs, lifting devices, cover plates, electrical enclosures and other intervals at arm's length. Pipingntralized. Avoid layout vulnerable to mechanical damage, damp, vulnerable to corrosion and vibration, ensure as far as possibgenerally should be ceshall not exceed the level of stator core, or arc skateboards, protection of stator plate rollover may occur), reasonable to
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