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钢栈桥施工安全技术专项方案钢栈桥施工安全技术专项方案钢栈桥施工安全技术专项方案(DOC5页金温货线避险改建工程钢栈桥施工安全技术专项方案根据施工方案审查会议要求修改编制：复核：审核：金温货线避险改建工程项目经理部2018年4月5日目录第一章编制说明.................................................................................................................-4-1.1编制依据....................................................................................................................-4-1.2编制原则....................................................................................................................-4-1.3适用范围.....................................................................................................................-5-第二章工程概况..................................................................................................................-1-2.1项目概述....................................................................................................................-1-2.2地形地貌....................................................................................................................-3-2.3水文地质条件.............................................................................................................-3-第三章栈桥总体方案..........................................................................................................-5-3.1设计使用年限及跨径布置.........................................................................................-5-3.2栈桥荷载形式.............................................................................................................-5-3.3栈桥结构方案.............................................................................................................-5-第四章施工部署及施工方案..............................................................................................-6-4.1施工部署....................................................................................................................-6-4.2施工方案....................................................................................................................-8-4.2.1桥台施工...............................................................................................................-8-4.2.2钢管桩基础施工...................................................................................................-8-4.2.3主横、纵梁施工.................................................................................................-12-4.2.4主梁的安装.........................................................................................................-13-4.2.5型钢分配梁的安装.............................................................................................-14-4.2.6桥面系施工.........................................................................................................-14-4.3施工注意事项..........................................................................................................-15-4.4钢栈桥拆除..............................................................................................................-16-4.5焊接工艺...................................................................................................................-18-4.6施工监控及观测...........................................................