广深高速公路2012年沿线大中小桥剩余桥墩基础加固工程安全专项施工方案编制审核审批广东省***公路工程有限公司广深珠高速公路维修工程项目经理部目录1、编制依据、原则及范围.............................................................................................................41.1)、编制依据:..................................................................................................................41.2)、编制原则:..................................................................................................................41.3)编制范围:......................................................................................................................52、桥梁工程概况.............................................................................................................................52.1)工程简介.........................................................................................................................52.1.1)广州段.................................................................................................................52.1.2)东莞段.................................................................................................................52.1.3)深圳段.................................................................................................................62.2)工程特点.........................................................................................................................62.3)施工工序.........................................................................................................................63、桥梁施工安全分析.....................................................................................................................63.1)施工安全分析..................................................................................................................63.2)其它因素影响..................................................................................................................74、桥梁安全施工方案.....................................................................................................................84.1)临时工程安全施工方案..................................................................................................84.1.1)顶梁支撑临时支架搭设.....................................................................................84.1.1.2)起重作业安全措施.........................................................................................94.1.2)砼围堰挡土墙施工.............................................................................................94.1.3)桥梁临时支架坍塌事故预防措施.................................................................104.2)、人工挖孔桩安全施工方案(具体详见专项施工方案)........................................104.2.1)、挖孔适用范围...............................................................................................104.2.2)、挖孔桩施工工艺...........................................................................................104.2.3)、挖孔桩基础施工安全技术措施.....................................................................124.3)机械钻孔安全施工方案................................................................................................154.3.1)、施工准备阶段安全预防措施....................................