新建天津至保定铁路工程JBSG-1标段津保正线邻近京广铁路路基施工方案目录1.编制依据........................................................................32.工程概况........................................................................42.1工程概述...................................................................42.2水文地质条件...............................................................42.3工程特点、难点.............................................................53.施工总体布置....................................................................63.1施工组织机构...............................................................63.2施工计划...................................................................63.3施工顺序...................................................................63.3.1总体施工顺序...........................................................63.3.2路基工程施工顺序.......................................................73.4机械设备配置...............................................................74.施工方案、方法及措施............................................................84.1总体施工方案...............................................................84.2施工方案...................................................................84.3施工方法及措施.............................................................94.3.1施工准备...............................................................94.3.2地基处理...............................................................94.3.3基床填筑..............................................................94.3.4附属设施................................................................155.过渡段.........................................................................185.1地基处理..................................................................195.2基坑回填..................................................................195.3过渡段填筑................................................................205.4过渡段压实标准............................................................205.5过渡段施工工艺流程图......................................................206.安全防护方案...................................................................226.1管线和既有设备的防护......................................................226.2路基软基处理施工防护......................................................226.3路基填筑施工防护..........................................................246.3既有线接触网支柱防护......................................................256.4施工区与既有线隔离防护....................................................256.5施工排水防护..............................................................266.6附属工程施工防护..........................................................276.7既有线安全防护措施........................................................276.7.1施工安全防护措施......................................................276.7.2管线和既有设备防护措施................................................296.7.3大型机械设备使用防护措施..............................................296.8变形观测..................................................................316.8.1既有线路观测点布置和观测频次..........................................316.8.2观测设备及成果........................................................316.8.3沉降、水平位移...
