目录1工程概况...............................................................................................................12施工准备...............................................................................................................22.1施工场地..................................................................................................22.2施工便道..................................................................................................22.3施工用水..................................................................................................32.4施工供电..................................................................................................33工期安排...............................................................................................................33.1进度分析...................................................................................................33.2永定河特大桥工程形象进度一览表.......................................................44施工方案...............................................................................................................44.1圆型薄壁空心墩施工方案......................................................................44.2圆端型薄壁空心墩施工方案..................................................................54.3扣件式脚手架步梯搭设方案..................................................................55施工方法与工艺...................................................................................................85.1墩内支架搭设...........................................................................................85.2测量放样...................................................................................................95.3钢筋加工及安装......................................................................................95.4模板施工................................................................................................105.5内模支立及拆除....................................................................................155.6混凝土浇注及养护................................................................................155.7薄壁空心墩翻模施工工艺流程图.........................................................196施工关键要点.....................................................................................................206.1墩身垂直度控制....................................................................................206.2墩身实体段施工....................................................................................206.3墩顶段施工............................................................................................216.4模板纠偏................................................................................................216.5模板拆除................................................................................................226.6冬季施工保证措施................................................................................227组织机构、施工队伍.........................................................................................247.1项目部施工组织机构.............................................................................257.2永定河架子队人员组成........................................................................267.3安全质量领导小组.......
