新建天津至保定铁路JBSG-1标段冬季施工方案编制：审核：审批：2010年11月5日目录一、工程概况........................................................11.概述..........................................................12.冬季施工期时段................................................1二、编制依据........................................................1三、总体施工方案....................................................2四、施工方法和技术措施..............................................31.混凝土工程....................................................31.1混凝土冬季施工的一般要求.................................31.2热工计算.................................................41.3原材料加热及保温.........................................61.4混凝土拌合和运输.........................................61.5混凝土浇筑...............................................81.6混凝土养护...............................................82.钢筋工程.....................................................103.钻孔桩施工...................................................114.承台施工.....................................................115.墩身、墩帽施工...............................................116.箱梁预制施工.................................................126.1箱梁预制................................................126.2预应力孔道压浆及封锚....................................147.箱梁架设施工.................................................157.1支座灌浆................................................157.2架梁设备使用维护保养....................................167.3架梁施工安全............................................168.连续梁施工...................................................179.桥面附属设施施工.............................................1810、砌体工程...................................................1810.1材料要求...............................................1810.2施工措施...............................................1911、路基工程...................................................1911.1地基处理...............................................1911.2施工措施...............................................19五、施工测温监控...................................................205.1施工测温范围............................................205.2测温元件的选择..........................................215.3测温元件布置及测温方法..................................215.4测温频率................................................215.5测温管理工作............................................22六、冬季防风、抗风措施.............................................22七、冬季施工安全措施...............................................23八、冬季施工应急措施...............................................24九、其它...........................................................25冬季施工方案一、工程概况1.概述新建津保铁路工程JBSG-1标段施工项目有新建津保正线单线12.3公里+新建大北环单线21.71公里+新建联络线及相关工程单线36.867公里+改建线路8.05公里+利用既有线24.115公里+拆除单线4.573km，包含桥梁、路基、站场、框构及大临工程等工点共8处。根据2010年度整体施工进度计划，本年度冬季施工重点为钻孔桩、承台、墩身、墩帽、箱梁制梁、箱梁架设、连续梁、桥面附属设施、路基工程的施工。2.冬季施工期时段当结构物所处环境的昼夜平均气温（最高或最低气温的平均值或当地时间6时、14时及21时室外气温的平均值）连续3天低于5℃或最低气温低于－3℃时，混凝土、钢筋、预应力、砌体工程...
