福银高速九江长江公路大桥B2合同段23#～24#墩承台施工方案编制：审定：中交第二航务工程局有限公司九江长江公路大桥B2合同段项目经理部二0一0年七月目录1.编制依据..............................................................51.1施工图纸..........................................................51.2国家和交通部现行有关标准、规范、规则、规程、办法..................52.工程概述.............................................................62.1概述..............................................................62.2水文条件..........................................................82.2.1水流速度......................................................82.2.2水位资料......................................................83.23#～24#墩承台总体施工方案...........................................94.23#～24#墩承台总体施工工期...........................................95.钢板桩围堰施工方案优点..............................................116.钢板桩围堰设计......................................................126.1设计条件.........................................................126.2封底砼抗浮验算...................................................136.3钢板桩结构受力计算...............................................136.3.1钢板桩结构布置形式...........................................136.3.2材料特性.....................................................146.3.3计算工况及荷载系数...........................................146.3.4各工况模型计算结果汇总.......................................146.4围囹系统受力计算.................................................146.4.1围囹计算结果.................................................166.4.2极值结果汇总.................................................186.5钢管横撑计算结果汇总.............................................186.5.1极值结果汇总.................................................186.5.2钢管横撑稳定验算.............................................187.钢板桩围堰施工......................................................197.1钢板桩围堰施工流程...............................................197.2钻孔平台拆除.....................................................207.4钢板桩施工.......................................................217.4.1钢板桩插打设备选择...........................................217.4.2钢板桩插打施工准备...........................................227.4.3导向梁安装...................................................237.4.4钢板桩围堰围囹下放...........................................237.4.5施工平台搭设.................................................247.4.6钢板桩插打顺序...............................................257.4.7首根钢板桩插打...............................................257.4.8转角钢板桩插打...............................................267.4.9合拢处钢板桩插打.............................................277.4.10其余钢板桩插打..............................................277.5钢板桩围堰止水...................................................278.水下吸泥施工........................................................279.封底混凝土施工......................................................289.1施工平台搭设.....................................................289.2封底混凝土导管选择及布置.........................................299.3封底混凝土施工顺序...............................................309.4首批混凝土方量计算.........................................
