岳阳洞庭湖二桥引桥第6联施工图设计开题报告

岳阳洞庭湖二桥引桥第6联施工图设计开 题 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 报告 岳阳新中置业枫桥尚城高层住宅楼 岩土工程补充勘察报告 (二期) (编号:2011GK017) 1、前言 1.1、拟建工程概况: 岳阳新中置业枫桥湖小区于2007年9月曾进行详细勘察，2009年12月又曾进行过一次补充勘察，由于本次枫桥湖小区(枫桥尚城)二期高层住宅楼在枫桥小区一期在建的5,、6,、15,和16,楼以北有7,、9,、11,、12,、13,、17,、18,、24,场地有所变更，且11,、12,和13,层数由原来的11层或18层增加至31层，拟采用框架剪力墙结构(具体位置见钻孔布置平面图所示)。 由于场地部分原详勘和第一次补充钻孔地质资料可以利用，图中详勘采用“zk”，第一次补充勘察采用“zzk”，本次补充钻孔号则采用“补zk”予以区别，“补zk”钻孔标高采用本次测量成果，原钻孔号和标高保持不变。剖面图采用详勘、第一次补勘和本次补勘资料相结合，而柱状图仅为本次补勘资料(利用原来钻孔有19个，本次补勘为23个)。 由于现场部分地段场地建有工棚，zk5和zk18有移位现象，具体移位方向、距离和原因列表 说明 关于失联党员情况说明岗位说明总经理岗位说明书会计岗位说明书行政主管岗位说明书 如下表1: 钻孔移位说明表 表1 钻孔号 移位方向 距离(m) 移位原因 补zk5 向南 4 建有工棚 补zk18 向南 5.0 建有工棚 补zk15 向南 7.0 水坑、场地尚未填平 their own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business road the competition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resources within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking win-win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examination and approval procedures, strict regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the development, ensure that the value of state-owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training of cadres and workers of the existing business, firmly establish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to market competition, improve management and operation of the market. At the same time, according to the need of industrial development, vigorously the introduction of high-quality management management personnel, and strive to build a high-quality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy. Serious research about social support the development of cultural undertakings in the country and the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. 1.2、勘察目的、任务要求和依据技术标准: 受岳阳新中置业有限公司的委托，我院于2011年7月15日至7月26日对该拟建场地按北京中外建建筑设计有限公司提供的施工图设计阶段岩土工程勘察任务书进行了岩土工程勘察工作，本次勘察为施工图设计阶段的岩土工程第二次补充勘察，目的是通过补充勘察，达到下列工作要求: 1)、搜集附有坐标和地形的建筑总平面图，场区的地面整平标高，建筑物的性质、规模、荷载、结构物特点，基础形式、埋置深度，地基允许变形等资料; 2)、查明不良地质作用的类型、成因、分布范围、发展趋势和危害程度，提出整治 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 的建议; 3)、查明建筑范围内岩土层的类型、深度、分布、工程特性，分析和评价地基的稳定性、均匀性和承载力; 4)、对需进行沉降计算的建筑物，提供地基变形计算参数，预测建筑物的变形特征; 5)、查明埋藏的河道、沟浜、墓穴、防空洞、孤石等对工程不利的埋藏物; 6)、查明地下水的埋藏条件，提供地下水位及其变化幅度，判定水和土对建筑 材料 关于××同志的政审材料调查表环保先进个人材料国家普通话测试材料农民专业合作社注销四查四问剖析材料 的腐蚀性; 7)、由北京中外建建筑设计有限公司提供的施工图设计阶段岩土工程勘察任务书中的内容。 本次补充勘察执行的规范、规程有: a、《岩土工程勘察规范》(GB50021—2001)2009版; quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 2and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st- b、《建筑地基基础设计规范》(GB50007—2002); c、《建筑抗震设计规范》(GB50011—2010); d、《高层建筑岩土工程勘察规程》JGJ(72—2004); e、《建筑桩基基础技术规范》DB42/242-2003; f、《岩土工程勘察工作规程》DB42/169-2003; g、《土工试验 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 标准》(GB/T50123—1999); h、《建筑桩基技术规范》(JGJ94—2008); i、施工图设计阶段岩土工程勘察任务书。 1.3、勘察方法及勘察工作完成情况: 本场地工程重要性为一级工程、中等复杂场地和中等复杂地基，因此，本次岩土工程补充勘察等级为甲级。 本次勘察的主要方法是采用工程钻探、现场原位测试、采取岩石抗压强度试验相结合。野外钻探施工采用二台QY—100型工程钻机，上部土层采用冲击法钻进，采芯率达100%，下部岩层采用回转方式钻进，勘察岩芯采取率仅达85%左右。 本次补充钻探孔共23个(包括2个地下室钻孔)，实际利用原来钻探孔17个，具体楼号和钻孔号见下表2: 表2 结构 设计地栋号 采用原钻孔号 本次补充钻孔号 层数 型式 坪标高 zzk1、zzk2 13, 补zk1、补zk2 剪力 36.00m 31 ?zk18 zk55、zzk11 补zk8、补zk9、 9, 框剪 35.50m 11 ?zzk12 补zk10 zk77、zzk39 补zk16、补zk17、 7, 框剪 35.30m 11 ?zzk40 补zk18 zzk13、zzk14 补zk11、补zk12、 12, 剪力 35.50m 31 ?zzk15 补zk13、补zk14 zzk18、zzk19 18, 补zk15 框剪 35.50m 18 ?zzk20 regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet3d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of state 补zk19、补zk20、 11, ?zzk35、zzk36 剪力 35.30m 31 补zk21、补zk22 17, ?补zk23 补zk5、补zk6、 24, / 35.00m 2 框架 ?补zk7 补zk3、补zk4 地下室 / 35.50m 1 zzk23、zzk24、zzk25 补充钻孔的位置和个数由设计单位和建设单位确定，我院实地放点，高层建筑物补充钻孔间距小于24.0m，地下室补充钻孔间距27.8m。钻孔深度以控制地基岩层主要受力层中风化板岩及下卧岩层微风化板岩有无不良地质现象为目的，孔深均达到桩端持力层以下3倍桩径或大于6.0m。 本次补充勘察工作已达到勘察方案所要求的内容，本次勘察完成工作量如下表3: 勘察完成工作量一览表 表3 观测 施工 标贯 岩石 标高 项目 取岩样 总进尺 水位 钻孔 试验 试验 测量 单位 个 m 件 次 组 个 个 数量 23 522.5 12 31 12 23 13 注:1、本次补充勘察未取土试验和水质分析，土工资料利用原来土工试验成果资料，水质分析利用原报告水的腐蚀性判定资料。 2、波速测试利用详勘和第一次补勘波速测试报告资料。 补充钻孔标高是以6,楼东侧一根水泥电杆下32.935m为引测点进行测量的，为北京坐标系、黄海高程。 2、拟建场地工程地质条件 2.1、地形、地貌 : 1)、地形:除补zk15地段尚未填平，24,楼地势较高外，其余? 场地大部分进行平整，地势较平坦，现时地面标高在30.80,35.89m之间。 2)、地貌:地貌单元属丘陵地区低丘岗剥蚀地带。 the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 4and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. 2.2、地质构造: 据区域地质资料，岳阳市位于洞庭湖东岸，区域构造处于东洞庭湖北东侧的土马坳背斜的北西翼。场区下伏基岩埋深约在6.80-12.40m左右，为元古界冷家溪群崔家坳组(Pt)板岩，岩性为粘土质软质lnc 岩石，以浅变质的薄层状泥质板岩为主，倾向NNE，倾角60-75度，在场区内呈一单斜层;场区及附近无大的活动性断裂经过，构造较为稳定，不良地质现象不发育。 仅在补zk2孔13.0,16.5m处见岩体破碎，岩石裂隙中充填石英脉，无层理构造。 2.3、场地岩土工程地质条件: 本次补充勘察报告和平面图是采用原详勘和第一次补勘地质分层(7层)数据结果。经本次补充钻探揭露，根据土层的成分、结构、塑性指标和工程特性及岩层的风化程度，自上而下分为7层，各自特征、厚度和分布范围描述如下: ml 1)、第四系全新统杂填土(Q):红褐色、黄褐色、灰褐色，由4 建筑垃圾、粉质粘土、碎石及生活垃圾填成，7,、9,、18,楼???地段为为老填土，堆填时间在8年以上，上部结构较密实;其余地段新近填土，堆填时间为1,2年，尚未完成自重固结，具孔隙，层厚0.4—5.6m，场地内绝大部分地段有分布，图中为?层。 al2)、第四系全新统淤泥质粉质粘土(Q):灰褐色，稍有光泽，4 无摇震反应，含有机质成分，中等干强度，韧性中等，含水量高，含有机质，有嗅味，属高压缩性土，呈软塑状态，主要分布在补zk16孔和24,门面场地，层厚1.6,4.2m，图中为第?层。 ? al3)、第四系全新统硬塑粉质粘土(Q):黄褐色，粉粒成分为主，4 evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet5d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the - 稍有光泽，无摇震反应，中等干强度，韧性中等，稍湿，上部呈硬塑状态，下部褐红色，具网纹状，呈坚硬状态。底部为石英碎石层，石英次棱角状，粒径10,30mm不等，约占30%，砂泥质成分充填胶结，密实，强度高，石英碎石层厚0.4—0.9m，主要分布在补zk5补和zk6孔地段，该土层层厚0.6,2.0m，图中为第?层。 lnc4)、前震旦系冷家溪群崔家坳组全风化板岩(P):紫红色，泥t 质成分，中厚层夹薄层，岩石全部风化，裂隙很发育，岩体破碎，岩石基本质量等级为?类，属极软岩，板状结构，结构基本被风化，强度较低，岩芯呈土状夹碎块状，层厚1.4—5.5米，分布在补zk1、补zk2、补zk15、补zk16、补zk17、补zk18、补zk19、补zk20、补zk21、补zk22孔地段，层厚1.3,7.2m，图中为第?层。 lnc5)、前震旦系冷家溪群崔家坳组强风化板岩(P):黄色、黄绿t 色，泥质成分，中厚层夹薄层，岩石强烈风化，裂隙很发育，岩体破碎，岩石基本质量等级为?类，层理较清晰，属极软岩，板状结构，结构大部分被风化，强度随深度变化逐渐增高，岩芯上部呈土状夹碎块状，强度较低，下部黄绿色，板岩强度增高，层理清晰，岩芯呈碎块状，除补zk11,补zk14孔外，其余地段均有分布，层厚3.5—9.3m，图中为第?层。 lnc6)、前震旦系冷家溪群崔家坳组中风化板岩(P):黄绿色，泥t 质成分，中厚层夹薄层，岩石中等风化，裂隙较发育，裂隙面与岩芯轴向近于平行，大部分岩体较完整，但在补zk2孔的13.0,16.5m间岩体较破碎，有石英脉充填，岩石基本质量等级为?类，层理清晰，属软质岩石，强度高，岩芯呈块状、短柱状和柱状，本次揭穿厚度6.2—21.0m。图中为第?层。 owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 6and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly lnc7)、前震旦系冷家溪群崔家坳组微风化板岩(P):灰白色、青t 灰色，泥质成分，中厚层夹薄层状，岩石微弱风化，板理构造清晰，从揭露出的岩块来看，裂隙稍发育，斜交岩芯轴向，呈“X”型，裂隙面呈褐色，被铁锰氧化物浸染，结构面类型以裂隙面为主，层面为次，组合一般，岩体较完整，基本质量等级为?类，属软岩，强度高，坚硬，岩芯呈块状、短柱状、少量柱状，采取率较高。本次揭露深度6.5—8.7m，图中为第?层。 2.4、岩土物理力学性质: 1)、标贯试验:现场对第?层杂填土、第?层淤泥质粉质粘土、第?层全风化板岩和第?层强风化板岩进行了原位测试标准贯入试验，各孔实测锤击数见《标贯试验实测数据统计表》(附表2)，根据(附表2)资料进行分层统计区间值、平均值、标准差、变异系数和修正击数，统计结果见下表4。 标贯试验数据分层统计表 表4 统计项目 试验 统计 区间值 平均值 标准差 变异 修正 系数 击数 岩土名称 类型 数量 (击) (击) (σ) (δ) (N) ?杂填土 标贯 6 5,8 6.8 1.169 0.171 5.8 ?淤泥质粉质粘土 标贯 7 4,6 4.5 0.787 0.172 3.9 ?全风化板岩 标贯 7 16,19 17.4 1.272 0.073 16.4 ?强风化板岩 标贯 9 15,28 22.0 4.416 0.201 19.2 注:第?层强风化板岩强度从上至下随深度变化逐渐减弱，显示标贯击数上低、下高，标准差高，离散系数大。 2)、土工试验:本次补充勘察取样试验孔满足规范要求。未采取原状土样，有关试验结果见详勘和第一次补充勘察《土的物理力学性质试验报告表》和《物理力学指标统计表》(已附入本报告)。 3)、岩石单轴抗压强度试验:本次补充勘察在场地内第?层中风 quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet7d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem- 化板岩和第?层微风化板岩各取6组岩石样作单轴抗压强度(饱和)试验，结果见《岩石物理力学性质试验报告表》(附表5)。根据岩石物理学性质试验资料进行范围值、平均值、标准差、变异系数进行统计，结果见表5。 岩石单轴抗压强度标准值统计表 表5 岩土参数 数量 范围值 平均值 岩土单轴抗压 岩石地基承 强度标准值 载力特征值 岩土名称 ƒ ƒ vka 统计指标 (组) (MPa) (MPa) (kPa) (kPa) ?中风化 饱和 15 3.61-9.16 5.600 4956 1700 板岩 ?微风化 饱和 12 9.17-15.25 11.958 10786 3700 板岩 注:上表第?层中风化板岩和第?层微风化板岩是综合详勘、第一次补勘和本次补勘分别共计15组和12组岩样一起统计的，建议采用本报告数据作为设计依据。 2.5、场地地下水条件: 1)、地下静止水位: 本次补勘分别在补zk4、补zk5、补zk6、补zk7、补zk10、补zk11、补zk13、补zk13、补zk14、补zk15、补zk16、补zk22、补zk23等孔内发现有地下水，有的地下水分布在原始地形低洼处，不易排除，而有的地下水分布在人工开挖的基坑内，比较容易排除。由于场地内已经完工的16#附近有一条南北走向的排水沟已被封堵，钻探时隔24小时后测得稳定水位在1.4,3.0m之间，相对标高为33.60,32.42m，水位较高。 2)、地下水类型及排泄方法: 地下水赋存在杂填土中，主要来源于大气降水，雨季时节水位上升，枯水时节，水位降低，该地下水属上层滞水类型。粉质粘土和板岩为相对隔水层，11,、12,、13,楼和地下室地段下部无软弱土??? 层存在，填土埋深不大，可直接挖沟排除;7,、24,楼地下水位?? usly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 8and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry and 埋深较大，场地无地下室，当采用桩基施工时，需采取隔、排水措施。由于深部岩层裂隙为闭合型，水量较微弱，仍需采取抽、排水措施。 3)、地下水侵蚀性判定: 详勘时，分别在zk8孔内2.8m处和zk4孔的1.0m各取1组水样送长沙勘察设计研究院试验室进行水质分析，分析结果见《水质分析报告》，报告结论判定该场地地下水具微腐蚀性，本次补充勘察报告采用原水质分析结果。 2.6、不良地质作用: 场地区域地质构造处于土马坳复式背斜西南翼，基底前震旦系冷家溪群催家坳组泥质板岩为向南东倾斜的单向岩层，薄层状，岩层产状近于直立，岩体除风化裂隙发育外，局部在补zk2的13.0,16.5m有小的层间破碎。场地内未见新近发生较大的断层通过，亦无滑坡、岩溶、崩塌、采空区和地面沉降等不良地质作用和地质灾害。 2.7、波速测试: 本场地曾在2007年的详细勘察时对7栋高层和2009年12月第一次补勘进行过波速测试，具体进行波速测试的栋号和孔号列表6如下: 表6 原栋号 楼栋号 详勘钻孔号 等效剪切波速(m/s) 28, 22, zk1 315 29, 23, zk4 317 27, 20, zk18 431 26, 21, zk15 320 24, 11# zk32 276 22, 9,、10, zk43 412 2, 2, zk121 311 第一次补勘又对6号楼以北的孔内进行了波速测试，其具体栋号、孔号和相对应的等效剪切波速测(m/s)列表7如下: igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet9d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high- 表7 楼栋号 第一次补勘钻孔号 等效剪切波速测(m/s) 19, zzk7 258 18, zzk20 139 17, zzk31 186 16, zzk50 237 15, zzk43 225 13, zzk24 380 12, zzk36 252 8, zzk26 244 7, zzk39 296 6, zzk51 273 由于两次勘察均对高层住宅楼场地进行仅20个钻孔的波速测，基本覆盖了整个场地，因此，本次再补勘时未进行波速测试，引用前波速部分成果资料。 2.8、场区地震效应: 根据详勘的7个孔波速测试和第一次补勘两次所有高层的波速测试进行统计计算，在覆盖层厚度在20.0m范围内，平均等效剪切波速在500 m/s?Vs,250m/s之内，因此，本场地土类型属中硬土，属?类建筑物场地。 根据国家标准《建筑抗震设计规范》GB50011—2010和《中国地震动参数区划图》GB18360—2001的规定划分，本区域建筑工程抗震设防烈度为7度，设计基本地震加速度值为0.10g，设计地震分组为第一组，特征周期为0.35s，本场区为可进行建设的一般性地段。 本场地内除局部有软弱土层外，无液化砂土层存在。 3、岩土工程分析评价 3.1岩土工程设计参数确定 (1)利用原有第一次补充勘察土层的物理力学性质的统计资料，对其主要力学参数统计见表8。 need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 10and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high- 土层的物理力学性质的推荐表 表8 主要岩土参数 重力密度 压缩模量 粘聚力 内摩擦角 3 γ kN/mEs MPa C kPa ф “o” 岩土名称 统计项目 变异系数(δ) 0.009 0.165 0.371 0.358 ?淤泥质粉质粘土 标准值(kPa) 1.85 3.0 15.4 3.0 变异系数(δ) .0.53 0.101 0.145 0.076 ?硬塑粉质粘土 标准值(kPa) 1.98 9.63 53.2 13.1 注:表中压缩模量为平均值。 (2)场地各岩土层工程设计参数建议值是根据室内岩土试验成果、标准贯入试验(N)等资料，依据有关规程、规范经分层进行数理统计后，结合岳阳市勘察经验综合分析提出，详见《标贯试验分层统计表》附表1和《岩石单轴抗压强度试验报告》附表2. 3.2地基岩土层评价 根据原来两次勘察和本次补勘野外钻探、原位测试及室内土工和岩石抗压强度试验结果，场地内地层的工程性能评价如下: 第?层杂填土，结构松散，强度低且不均，工程性质差，局部地段下部夹有淤泥质土，该层在24,场地土区分布厚度较大，不能作为? 拟建物基础持力层，且对基础开挖不利。 第?层淤泥质粉质粘土，呈软塑状，强度低，为高压缩性土层，分布在24,场地土区的暗沟暗塘中，且分布不均，为场地软弱土，不? 能作为拟建物基础持力层，顶板埋深3.00-5.60m，对基坑开挖施工不利。 第?层硬塑粉质粘土，呈硬塑状，强度较高，且中偏低压缩性，顶板埋深1.30-8.40m，但厚度变化较大，局部分布，一般不宜作为本拟建物的天然地基和桩基础持力层。 第?层全风化板岩为基底岩层，强度较低，岩石基本质量等级为?类，上部紫红色、褐黄色板岩可作一般建筑物桩端持力层;可作一 et, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet11d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt comp 般多层或小高层建筑物桩端持力层，局部地段顶板埋藏较浅，对基坑开挖有利。 第?层强风化板岩为基底岩层，中厚层夹薄层状，强度较高，岩石基本质量等级为?类，中下部岩石强度增高，岩石可作一般建筑物桩端持力层，局部顶板埋藏较浅的地段对基坑开挖十分有利。 第?层中风化板岩，中厚层夹薄层，岩层稳定，虽然裂隙较发育，为闭合型裂隙，但岩体较完整，质量等级为?类，岩石强度高，坚硬，厚度较大，下部未发现有软弱夹层存在，亦无临空面、空洞，是本场区11层,18层拟建建筑物和高层建筑物较好的人工挖孔桩桩端持力层及下卧层。 第?层微风化板岩，中厚层夹薄层，岩层稳定，岩体较完整，基本质量等级为?类，岩石强度高，坚硬，下部未发现有软弱夹层存在，亦无临空面、空洞，是拟建高层建筑物最佳人工挖孔桩桩端持力层及下卧层。 3.3、地基土的均匀性及场地均匀性评价: 建设场地地形起伏较大，场地土属于多层土组合地层，以下由北往南按栋号分别进行评价。 1、拟建13,楼设计地坪面标高为36.00m，基础埋深为正负零? 以下约-4.20m，基础平面下分布地层有?、2、?和?层，地基主要? 受力层范围内地层岩性、岩相变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部不均匀，拟建场地宜按不均匀地基考虑。 2、地下室设计地坪面标高为35.50m，基础埋深为正负零以下-4.20m，基础平面下分布地层有?、?层，地基主要受力层范围内地 o the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 12and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of high 层岩性、岩相变化较大，层面坡度局部大于10%，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部不均匀，拟建场地宜按不均匀地基考虑。 3、拟建12,楼设计地坪面标高为35.50m，基础埋深为正负零以? 下-4.20m，基础平面下分布地层有?、?、?层，地基主要受力层范围内地层岩性、岩湘变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部含软弱土，拟建场地宜按不均匀地基考虑。 4、拟建18,楼设计地坪面标高为35.50m，基础埋深为正负零以? 下-4.20m，基础平面下分布地层有?、?、?、?、?层，地基主要受力层范围内地层岩性、岩湘变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，且下伏有软弱土层，总体分布稳定性较差，拟建场地应按不均匀地基考虑。 5、拟建?,楼设计地坪面标高为35.50m，基础埋深为正负零以下-4.20m，基础平面下分布地层有?、?、?层，地基主要受力层范围内地层岩性变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部含软弱土，拟建场地宜按不均匀地基考虑。 6、拟建11,楼设计地坪面标高为35.30m，基础埋深为正负零以? 下-4.20m，基础平面下分布地层有?、?层，地基主要受力层范围内地层岩性变化较小，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较小，总体分布稳定性较好，土层出露较均匀，拟建场地宜按较均匀地基考虑。 7、拟建17,楼设计地坪面标高为35.30m，基础埋深为正负零以? quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet13d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem- 下-4.20m，基础平面下分布地层有1、2、3、?层，地基主要受??? 力层范围内地层岩性变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部含软弱土，拟建场地宜按不均匀地基考虑。 8、拟建7,楼设计地坪面标高为35.30m，基础埋深为正负零以? 下-4.20m，基础平面下分布地层有1、3、5层，地基主要受力层??? 范围内地层岩性变化较大，在拟建物基础平面下地基土强度及压缩模量的加权平均值局部变化较大，总体分布稳定性较差，局部含软弱土，拟建场地宜按不均匀地基考虑。 区域地质资料表明，拟建物场地下伏基岩为近东西向发育的元古界冷家溪群崔家坳组(Pt)泥质板岩，属非可溶碎屑岩类，钻探揭lnc 露在场地范围内层顶埋深在0.50-10.20m之间，场区周边无大的活动性断裂经过，构造上较稳定。 综合来说，拟建场地较稳定，适宜建筑。 3.4、基础方案及评价 综合分析本场地地基岩土层条件及各拟建物结构、荷载情况，建议各拟建建筑物基础型式及持力层于下表9，供设计参考。 场地拟建建筑物建议基础型式一览表 表9 序?0.00 设计基础 代表 建议持 建议基 楼号 号 标高(m) 底面标高 剖面 力 层 础型式 钻孔灌注桩、挖孔1,1′ 中、微风化板岩 1 13, 36.00 31.80 ?2,2′ 桩 4,4′ 中风化板岩 钻孔灌注桩、挖孔2 9, 35.00 30.80 ?5,5′ 桩 钻孔灌注桩、挖孔6,6′ 中、微风化板岩 3 12, 35.50 31.30 ?7,7′ 桩 钻孔灌注桩、挖孔中、微风化板岩 4 18, 35.50 31.30 9,9′ ?桩 usly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 14and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry and 钻孔灌注桩、挖孔12,12′ 中风化板岩 5 7, 35.30 31.10 ?13,13′ 桩 钻孔灌注桩、挖孔10,10′ 中、微风化板岩 6 11, 35.30 31.10 ?16,16′ 桩 钻孔灌注桩、挖孔中、微风化板岩 7 17, 35.30 31.10 11,11′ ?桩 钻、冲孔灌注桩、强风化板岩 8 24, 35.00 无地下室 14,14′ ?夯扩桩 3,3′ 中风化板岩 9 地下室 35.00 31.80 放坡开挖 8,8′ 3.5岩土参数的可靠性和适宜性分析: 根据室内土工试验和现场原位标贯测试资料，场地内岩土层地基承载力特征值列表10如下: 岩土层地基承载力特征值推荐表 表10 (kPa) 岩石地基承载力 地基土承载力特征值 ƒak岩 土 名 称 土工试验 标贯试验 建议值 特 征 值 ?杂填土 / 160 100 ƒ a?淤泥质粉质粘土 100 122 70 (kPa) ?硬塑粉质粘土 296 230 230 ?全风化板岩 414 240 ?强风化板岩 520 380 ?中风化板岩 饱和:1700 ?微风化板岩 饱和:3700 注:1、第?层全风化板岩遇水极易软化，应防止地表水流入基槽而降低地基承载力。 o2、根据本场地岩层为薄层夹中厚层状、产状大于80，岩体为较完整、裂隙较发育、结构面以裂隙面为主，闭合型，组合为一般等特征，中风化板岩、微风化板岩折减系数ψr取035参与计算。 3.6成桩可能性分析: 3.6.1、人工挖孔灌注桩基础:场地勘探范围内未发现有洞穴、临空面、破碎岩体和软弱岩层对此桩型较为有利，选择?层中风化板岩或?层微风化板岩作为桩端持力层，是拟建建筑物较好的基础类型。该桩型单桩承载力高，施工设备简单，进出场方便，对环境污染少，但成桩速度慢，安全性差，成孔时支护较困难，故需加强支护措施， -evelopment, ensure that the value of stateregulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet15d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the 地表水和基岩裂隙水对现场灌注与持力层有一定的影响，施工时应注意。 3.6.2、泥浆护壁钻(冲)孔灌注桩基础:场地勘探范围内未发现有洞穴、临空面、破碎岩体和软弱岩层对此桩型较为有利，选择?层中风化板岩或?层微风化板岩作为桩端持力层，是拟建建筑物较好的基础类型。该桩型单桩承载力高，能够进入较硬的岩层，施工设备进出场较为方便，周围形成的泥浆池对环境无较大的影响，但该桩型造价相对于人工挖孔成桩较高，在施工过程中应注意钻头在孔内的速度，在不同地层选择合理冲击头的重量，应注意桩底的沉渣，地表水和基岩裂隙水对现场灌注与持力层有一定的影响，施工时应注意。 3.7基坑开挖与地下水处理 3.7.1环境条件 设计地下室为一层，场地地面整平标高为35.30-36.00m，开挖深度4.20m，基坑底面标高约为31.10,31.80m，场地基坑周边均较空旷，无影响基坑稳定的建筑及障碍物，边线距红线最近处约12.20,17.40m，基坑周边基本具备放坡开挖条件。 为确保施工安全，建议在基坑施工前对地下室开挖范围内进行管线探测详查，以便指导施工。 3.7.2工程地质条件 地下室基坑开挖深度4.20m，开挖后组成坑壁的土层为:?杂填土、?层淤泥质粉质粘土、?层硬塑粉质粘土;坑底地层:以?层杂填土、?层粉质粘土为主，局部为?层硬塑粉质粘土和?层全风化板岩。上述地层除第?层杂填土和?层淤泥质粉质粘土工程性质较差外，其它土层工程性质相对较好，对基坑开挖较为有利。 (一) 基坑支护 need of industrial development, vigorously the introduction of higho the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 16and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high- 现依据郎肯土压力理论，假设基坑边地面在无荷载的前提下，自立边坡的允许自立高度Zo按下式进行计算: oZo=2c/rtg(45，Ф/2) 式中:Zo—允许自立高度(m) c—侧壁土体粘聚力(kPa) r—侧壁土体的天然重度(KN/?) o Ф—侧壁土体的内摩擦角() 以?杂填土、?淤泥质粉质粘土参数计算结果，Zo=1.23,3.42m,4.20m，基坑侧壁不稳定。 根据以上分析，结合基坑周边环境及工程地质条件，基坑可采用分阶段放坡开挖，局部结合排桩(如粉喷桩、钻孔桩等)支护，建议采用1:1.25-1:0.75的坡率放坡，同时对坡面采用挂网喷锚支护，基坑工程应进行专项设计，由有相应资质的单位进行设计;基坑边坡支护结构设计参数见表11。 基坑支护结构(抗剪强度)设计参数 表11 重度 直快 标准贯入 基坑规范 建议取值 层序 Υ CФCФCФCФk kk kk kk k oooo((((KN/? kPa ) kPa ) kPa ) kPa ) ?杂填土 19.00 8 18 7 6.0 ?淤泥质粉质粘土 18.50 15.4 3.0 12 5.0 8 5.5 ?硬塑粉质粘土 19.80 53.2 13.1 52 18 50 18 45 13.5 ?全风化板岩 19.40 65 20.8 60 20.0 3.7.3地下水处理 如前所述，场区地下水主要为填土中的上层滞水，水量较小且下部土层渗透性低，不能形成统一自由水面，静止水位较高，较易疏干。但24,栋门面地下水埋藏较深，应采取隔水措施进行桩基施工。 ? regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet17d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of state 场地可不考虑基坑突涌的问题，但需对无上部荷载部分基坑进行抗浮验算，必要时，需设置抗浮桩(桩型可采用钻、冲孔灌注桩，设计参数见下表13)。根据场地内16#楼人工挖孔桩已经开挖的情况，场地内东部及中部地下水主要是由东部较高的地段排泄进入场地，且水量较大。本场地根据16#楼现场发现的情况以及考虑因暴雨等因素产生的临时高水位而引起的浮力问题，抗浮抗浮验算时宜按地下水标高32.60进行验算。 赋存于填土中的上层滞水及少量基岩裂隙水，水量不大，可采取基坑明排的方式解决，即设置排水沟和集水井，将基坑内的水排出基坑外。地下室基坑开挖后应及时处理，不宜长时间暴露于空气中，同时应防止地表水体的渗入而软化地基土。 综合各种因素，本基坑的安全等级应为二级。另外应说明的是:基坑施工期间应做好基坑的监测工作，及时反馈信息，采用信息化施工，发现险情，及时处理，避免出现较大的事故，基坑开挖、支护方案另行设计。 4、结论与建议 1)、经勘察结果表明，拟建场地内无不良地质现象和临空面、空洞和基岩软弱夹层等地质灾害存在，亦不存在可液化的砂土层，场地是稳定的，适宜拟建物建筑。 2)、场地土类型大部分地段为中硬场地土，在场地24,楼地段分?布中软场地土，建筑场地类别为?类，本区域建筑工程抗震设防烈度为7度，设计基本地震加速度值为0.10g，设计地震分组为第一组，特征周期为0.35s，本场区属可进行建设的一般性地段。。 3)、本场地存在上层滞水，深部由于岩石裂隙较发育，有孔隙潜 o the e the ability to respond to market competition, improve management and operation of the market. At the same time, according testablish the concept of the market, enhance the sense of crisis to adapt to market competition, the sense of urgency, improvof cadres and workers of the existing business, firmly owned assets.(five) to strengthen the construction management personnel. Strengthen the management of education and training -roup, to achieve leveraging the development, ensure that the value of statestry gnation and approval procedures, strict regulation of economic activities, attract injection the social investment to the indunciple, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation, examiwin pri-es within the group, the city resources, other industries and regional resources, mutual trust, mutual benefit, seeking winhe market.(four) to promote the integration of resources. To further broaden their horizons, effective integration of resourct of tve strength, walking business road the competition of alienation and characteristics, the pursuit of stability and developmenmber of unique, market influence and coverage of the brand, the implementation of key breakthroughs, to enhance the competitif a nuacquisition performance, enhance the competitive strength. Concentrated manpower, careful planning, packaging and publicity oprofit.(three) vigorously promote the brand. To establish brand awareness, awareness of the use of brand, brand value, brand their own conditions to develop the correct road, the maximum to avoid investment risk, gain 18and actively seek policy, projects and funds, enterprise and industry group mission to promote leapfrog development. the XX policy, especially the policy of industrial development, financial investment policy, financial policy and tax policy, ry andusly study the policy for policy. Serious research about social support the development of cultural undertakings in the countructure optimization and upgrading ability, enhance core competitiveness, adapt to the need of market competition.(six) serioquality professional management team, hard work, and promote the entire workforce knowledge structure, age structure, st-quality management management personnel, and strive to build a high-need of industrial development, vigorously the introduction of high 水存在，水量较弱。地下水经水质分析在弱透水层中具微腐蚀性作用。但由于场地内填土孔隙较大，且局部有软弱土层存在，对挖孔桩基础施工有较大影响，人工挖孔桩需采取相应的抽水、隔水和排水措施。 4)、场地内抗浮验算时宜按地下水标高32.60进行验算。 5)、24,楼门面勘察建议采用钻孔灌注桩，以第?层强风化板岩? 作为桩端地基持力层;其余高层建筑物建议采用人工挖孔嵌岩桩，以第?层中风化板岩下部或第?层微风化板岩作为桩端地基持力层。 6)、桩(墩)基础的单桩(墩)持力层应通过试桩确定。 7)、以下提供人工挖孔桩和泥浆护壁钻(冲)孔桩的极限端阻力标准值和极限侧阻力标准值，有关桩的参数见表12。 桩的极限端阻力标准值和极限侧阻力标准值表 表12 人工挖孔嵌岩桩 泥浆护壁钻(冲)孔桩 桩基参数 极限桩端阻力 极限侧阻力 极限桩端阻力 极限侧阻力 标准值 标准值 标准值 标准值 q (kPa) q (kPa) q (kPa) q (kPa) pksikpksik岩土名称 ?杂填土 / 20 / 20 ?淤泥质粉质粘土 / 20 / 20 ?硬塑粉质粘土 / 82 / 84 ?全风化板岩 / 80 / 78 ?强风化板岩 / 100 / 94 岩石单轴饱和抗压岩石单轴饱和抗压 ?中风化板岩 强度标准值 强度标准值 130 124 ƒ:4956(kPa) ƒ:4956(kPa) vkvk 岩石单轴饱和抗压岩石单轴饱和抗压 ?微风化板岩 强度标准值 强度标准值 160 140 ƒ:10786(kPa) ƒ:10786(kPa) vkvk 注:1、采用表中参数计算时，建议进行试桩校核。人工挖孔桩岩土参数适用于《建筑桩基技术规范》JGJ94—2008 有关公式计算。 2、桩径及桩深应根据拟建物上部结构荷载大小通过计算确定。 3、桩的竖向承载力标准值，通过桩基检测结果进行验算求得。 4、当同一结构单元采用不同的基础型式或基础设置在不同的地基上，应注意地基土的不均匀沉降对上部结构的影响。 regulation of economic activities, attract injection the social investment to the industry group, to achieve leveraging the d, examination and approval procedures, strict win principle, in the framework of national policies and regulations, strict inspection and argumentation, legal consultation-, other industries and regional resources, mutual trust, mutual benefit, seeking winourcesntegration of resources. To further broaden their horizons, effective integration of resources within the group, the city rescompetition of alienation and characteristics, the pursuit of stability and development of the market.(four) to promote the id the and coverage of the brand, the implementation of key breakthroughs, to enhance the competitive strength, walking business roampetitive strength. Concentrated manpower, careful planning, packaging and publicity of a number of unique, market influence he cothe brand. To establish brand awareness, awareness of the use of brand, brand value, brand acquisition performance, enhance t heir own conditions to develop the correct road, the maximum to avoid investment risk, gain profit.(three) vigorously promotet19d funds, enterprise and industry group mission to promote leapfrog development.cts anlicy of industrial development, financial investment policy, financial policy and tax policy, and actively seek policy, projeus research about social support the development of cultural undertakings in the country and the XX policy, especially the poSerio g ability, enhance core competitiveness, adapt to the need of market competition.(six) seriously study the policy for policy.ent team, hard work, and promote the entire workforce knowledge structure, age structure, structure optimization and upgradinquality professional managem-quality management management personnel, and strive to build a high-igorously the introduction of highetition, improve management and operation of the market. At the same time, according to the need of industrial development, vt compet, enhance the sense of crisis to adapt to market competition, the sense of urgency, improve the ability to respond to markemanagement of education and training of cadres and workers of the existing business, firmly establish the concept of the markowned assets.(five) to strengthen the construction management personnel. Strengthen the -evelopment, ensure that the value of state