求给出放坡系数的基础开挖土方计算公式?解:土方边坡用边坡坡度和坡度系数
表
关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf
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工程
路基工程安全技术交底工程项目施工成本控制工程量增项单年度零星工程技术标正投影法基本原理
中常用1:K表示放坡坡度。K称坡度系数。设:上宽为a,挖土深度为h,长度为L,放坡系数为k则:下宽b=a-hk那么,挖土方的计算公式是:V=(a+a-hk)/2xHL沟槽挖土方计算表管径上宽a=b+hk下宽b=a-hk(查下表)沟槽深h(垫层+管径+覆土高度)或(按图纸设计要求)放坡系数K(查下表)沟槽截面积S=(a+b)×h÷2管道长度L(单位:米)挖土体积V(单位:m3)回填土(单位:m3)管内体积(单位:m3)垫层体积(单位:m3)DN501.650.60.70.750.788314.34247.543223.3500.61723.576DN601.650.60.70.750.788218.76172.274155.2480.61816.407DN801.650.60.70.750.78815.3712.10410.8740.0771.153DN1001.750.70.70.750.85834.8629.89227.0040.2742.615DN12500.0000.0000.0000.0000.000DN1501.80.750.70.750.8930.0000.0000.0000.000DN2002.210.80.751.280977.191250.8031167.4350.30783.061DN2502.27510.850.751.3921605.322234.4052011.16578.761144.479DN3002.551.20.90.751.6880.0000.0000.0000.000DN4002.81.310.752.0500.0000.0000.0000.000DN5003.051.41.10.752.4480.0000.0000.0000.000DN6003.31.51.20.752.8800.0000.0000.0000.000DN7003.751.81.30.753.6080.0000.0000.0000.000DN80041.91.40.754.1300.0000.0000.0000.000DN9004.2521.50.754.6880.0000.0000.0000.000DN10004.62.21.60.755.4400.0000.0000.0000.000DN11004.852.31.70.756.0780.0000.0000.0000.000DN12005.12.41.80.756.7500.0000.0000.0000.000注:红色字体已设有公式,在黑色字体的格输入实际数据即可。没有标注单位为“米”。沟槽基础垫层厚度:一般土质100㎜,较差土质200㎜。放坡开挖沟槽底面宽度表(Hs:管材半强度)公称直径Hs≤30003000≤Hs≤4000Hs>4000公称直径Hs≤30003000≤Hs≤4000Hs>4000DN150650————DN700160017001800DN200700————DN800170018001900DN300100011001200DN900180019002000DN400110013001400DN1000200021002200DN500130014001500DN1100210022002300DN600140015001600DN1200220023002400有支撑沟槽底面宽度表(Hs:管材半强度)公称直径Hs≤30003000≤Hs≤4000Hs>4000公称直径Hs≤30003000≤Hs≤4000Hs>4000DN150950————DN700190020002100DN2001000————DN800200021002200DN300130014001500DN900210022002300DN400140016001700DN1000230024002500DN500160017001800DN1100240025002600DN600170018001900DN1200250026002700雨水口连接管沟槽宽度表(㎜)黄色表格摘自04S520图集《埋地塑料排水管施工》57页管道规格DN100DN300DN400沟槽宽度650800900土方工程放坡系数表绿色表格摘自网上土壤类别放坡起点(m)人工挖土机械挖土在坑内作业在坑上作业一、二类土1.21:0.501:0.331:0.75三类土1.51:0.331:0.251:0.67四类土21:0.251:0.101:0.33室外排水管土方开挖底部宽度管径(㎜)铸铁管、钢管、石棉水泥管塑料管混凝土、钢筋混凝土管、预应力钢筋混凝土管陶土管50~750.60.70.80.7100~2000.70.80.90.8250~3500.80.91.00.9400~4501.01.11.31.1500~6001.31.41.51.4700~8001.61.71.8—900~10001.81.92.0—1100~12002.02.12.3—1300~14002.22.42.6—