朱家纸厂双线大桥连续梁刚构专项施工方案.docx
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朱家纸厂双线大桥连续梁刚构专项施工方案
新建铁路郑州至万州线重庆段站前工程ZWCQZQ-1标段
朱家纸厂双线大桥
连续梁—刚构专项施工方案
中铁二局工程有限公司·郑万铁路重庆段土建1标项目经理部
二〇一七年五月²重庆巫山
新建铁路郑州至万州线重庆段站前工程ZWCQZQ-1标段
朱家纸厂双线大桥
连续梁—刚构专项施工方案
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中铁二局工程有限公司郑万铁路重庆段土建1标项目经理部
二〇一七年二月
1编制说明................................................................................................................................7
1.1编制依据.........................................................................................................................7
1.2编制范围.........................................................................................................................7
1.3编制原则.........................................................................................................................8
2工程概况................................................................................................................................8
2.1工程地理位置.................................................................................................................8
2.2施工环境概况.................................................................................................................8
2.2.1地形地貌..................................................................................................................8
2.2.2水文环境..................................................................................................................9
2.2.3气象条件..................................................................................................................9
2.2.4地质构造及地震环境..............................................................................................9
2.2.5主要设计技术标准..................................................................................................9
2.3设计结构.........................................................................................................................9
3工程重、难点分析..............................................................................................................14
3.1施工重点.......................................................................................................................14
3.3施工难点.......................................................................................................................14
4施工计划..............................................................................................................................14
4.1工期进度计划...............................................................................................................14
4.2主要机械设备配置计划...............................................................................................14
4.3材料计划.......................................................................................................................15
4.4现场主要人员配置.......................................................................................................16
5总体施工方案......................................................................................................................16
6施工方案及方法..................................................................................................................17
6.1施工准备.......................................................................................................................17
6.1.1技术准备工作.........................................................................................................17
6.1.2合同交底及图纸会审............................................................................................17
6.1.3施工测量................................................................................................................17
6.1.4试验方案................................................................................................................18
6.1.5主要物资供应方案................................................................................................18
6.1.6主要临时设施........................................................................................................18
6.20#块托架施工................................................................................................................18
6.2.1托架设计.................................................................................................................19
6.2.2托架安装.................................................................................................................21
6.2.3托架预压方案.........................................................................................................21
6.30#块施工........................................................................................................................22
6.3.10#块模板施工.........................................................................................................22
6.3.20#块钢筋施工.........................................................................................................23
6.3.30#块混凝土施工.....................................................................................................27
6.3.4预应力施工............................................................................................................30
6.3.5托架模板拆除........................................................................................................36
6.4挂篮设计、加工、试验及运行...................................................................................37
6.4.1挂篮设计..............................................................................................................37
6.4.2挂篮加工及拼装....................................................................................................41
6.4.3挂篮预压................................................................................................................42
6.4.4挂篮施工注意事项................................................................................................44
6.5挂篮悬臂现浇段施工方案及方法...............................................................................45
6.5.1结构设计概况........................................................................................................45
6.5.2施工流程................................................................................................................45
6.5.3模板设计与施工....................................................................................................46
6.5.4钢筋及预应力管道施工........................................................................................49
6.5.5混凝土施工.............................................................................................................51
6.5.6悬浇施工过程的质量管理与控制........................................................................51
6.6中合龙段施工................................................................................................................52
6.6.1施工工艺流程........................................................................................................52
6.6.2合龙段支架及模板................................................................................................53
6.6.3内模安装................................................................................................................53
6.6.4体外型钢支撑安装................................................................................................54
6.6.5钢筋施工................................................................................................................54
6.6.6预应力束张拉........................................................................................................54
6.6.7合龙段混凝土浇筑.................................................................................................54
6.7边跨直线段施工...........................................................................................................55
6.7.1施工工艺流程........................................................................................................55
6.7.2支架设计................................................................................................................55
6.7.3模板设计及施工.....................................................................................................56
6.7.4边跨直线段混凝土浇筑.........................................................................................57
6.8挂篮、托架及支架拆除方案.......................................................................................58
6.8.1挂篮拆除................................................................................................................58
6.8.2支架及托架拆除....................................................................................................58
6.9合龙段施工要点...........................................................................................................59
6.10“四电”及附属工程相关预埋件施工.....................................................................59
6.10.1安装要求..............................................................................................................59
6.10.2焊接要求..............................................................................................................60
6.11支座的安装.................................................................................................................60
6.12公路防护.....................................................................................................................62
7线性监控..............................................................................................................................62
7.1线性监控目的和目标....................................................................................................62
7.3线性监控的方法...........................................................................................................62
7.4线性监控的体系...........................................................................................................63
7.5线性监控的测量........................................................................................