绍兴滨海新城滨海大桥B标基桩施工技术方案编制：复核：审核：中交二公局绍兴滨海新城滨海大桥B标项目经理部2011年9月目录1编制说明..............................................................11.1编制范围....................................................11.2编制依据....................................................11.3编制原则....................................................12工程概况..............................................................22.1工程简介....................................................22.2自然条件....................................................32.3航道情况....................................................32.4工程地质条件................................................42.5主要工程概况及工程数量......................................52.5.1基桩工程概况..........................................52.5.2主要工程数量..........................................53施工组织设计..........................................................53.1总体施工安排................................................53.2基桩施工计划................................................53.2.1功效分析..............................................53.2.2施工计划..............................................63.3人员组织....................................................73.3.1施工人员组织..........................................73.3.2劳动力组织............................................83.4机械设备的配备及水电的配置..................................93.4.1主要施工机械设备的配置................................93.4.2水电的配置............................................94主要施工方案及施工工艺...............................................104.1施工方案综述...............................................104.1.1主桥主墩基桩施工方案综述.............................104.1.2引桥墩及过渡墩基桩施工方案综述.......................104.1.3主桥防撞墩基桩施工方案综述...........................114.2施工准备...................................................114.2.1钻孔平台的搭设.......................................114.2.2桩位放样与复核.......................................124.2.3钢护筒的埋设.........................................124.3钻孔施工...................................................134.3.1钻机选择.............................................134.3.2泥浆制备的技术及操作要求：...........................154.3.3钻孔工艺.............................................164.3.4清孔.................................................184.3.5成孔验收.............................................184.3.6钻进施工工艺流程图...................................194.4钢筋笼制作和安装...........................................204.4.1钢筋笼的制作.........................................204.4.2钢筋笼下放...........................................224.5灌注水下混凝土.............................................234.5.1首批混凝土方量及储料斗的配置.........................234.5.2导管下放.............................................244.5.3二次清孔.............................................254.5.4灌注水下混凝土.......................................254.6成桩质量检测...............................................264.7钻孔灌注桩施工注意事项.....................................274.7.1坍孔.................................................274.7.2钻孔的偏斜...........................................284.7.3扩孔和缩孔.....................
