目 录
一、工程概述 ............................................................................................................... 1
1、概述 .................................................................................................................. 1
2、适用范围 .......................................................................................................... 1
二、作业内容 ............................................................................................................... 1
三、预应力张拉施工准备……………………………………………………………1
1、预应力材料、设备准备……………………………………………………1
2、张拉条件…………………………………………………………………….2
3、张拉组织机构及人员安排………………………………………………….2
四、质量标准及验收方法 ........................................................................................... 2
五、后张法空心板梁预应力张拉工艺及质量控制流程图 ....................................... 3
六、工艺及质量控制流程 ........................................................................................... 3
（一）张拉操作步骤 ................................................................................................... 4
（二）工艺步序说明 ................................................................................................... 4
1．预应力材料进场检验与保管 ......................................................................... 4
2．钢绞线下料与编束.......................................................................................... 6
3．预应力筋穿束 .................................................................................................. 7
4. 安装锚具及夹片 ............................................................................................... 7
5．千斤顶的定位 .................................................................................................. 8
6．预应力张拉 ...................................................................................................... 8
7、伸长量的计算及纵向钢绞线束张拉操作工艺……………………………..9
七、封锚、压浆……………………………………………………………………….13
八、施工安全与环境保护 ......................................................................................... 17