现浇箱梁挂篮施工方案

目录

一、概况________________________________________________________ 2

二、总体施工计划___________________________________________________ 2

三、具体施工步骤：_________________________________________________ 3

（一）、临时立柱________________________________________________________ 3

（二）、0#段支架、模板施工______________________________________________ 4

1、门式支架__________________________________________________________________ 4

2、模板施工__________________________________________________________________ 4

3、钢筋施工__________________________________________________________________ 5

4、混凝土灌注________________________________________________________________ 5

（三）、挂篮法分段悬臂浇筑______________________________________________ 6

1、菱形挂篮设计______________________________________________________________ 7

2、悬臂施工_________________________________________________________________ 10

（四）、边跨直线段施工_________________________________________________ 21

1、地基处理_________________________________________________________________ 21

2、支架预压试验_____________________________________________________________ 21

3、模板施工_________________________________________________________________ 22

4、砼浇筑___________________________________________________________________ 22

5、砼养护___________________________________________________________________ 23

6、支架落架_________________________________________________________________ 23

（五）、合拢段施工及体系转换___________________________________________ 23

1、体系转换_________________________________________________________________ 23

2、卸挂篮___________________________________________________________________ 23

3、合拢段施工_______________________________________________________________ 24

4、合拢段施工技术措施：_____________________________________________________ 26

5、合拢段施工中的其它事项___________________________________________________ 27

（六）、挠度施工控制___________________________________________________ 27

1、挂篮的施工控制___________________________________________________________ 30

2、地基及支架变形___________________________________________________________ 30

3、悬臂浇筑施工挠度控制_____________________________________________________ 30

4、影响挠度控制的因素_______________________________________________________ 31

（七）、测量方案_______________________________________________________ 32

1、施工控制测点布置_________________________________________________________ 32

2、观测时间_________________________________________________________________ 32

3、测量方案的选择___________________________________________________________ 32

4、线形控制的具体实施方法___________________________________________________ 33

5、线形控制中的注意事项_____________________________________________________ 33