DB41/T 1678-2018 空心板桥横向预应力加固技术规程

ICS93.040

P66

DB41

河南省地方标准

DB41/T1678—2018

空心板桥横向预应力加固技术规程

2018-09-29发布2018-12-29实施

河南省质量技术监督局发布

DB41/T1678—2018

目次

前言................................................................................II

1范围..............................................................................1

2规范性引用文件....................................................................1

3术语和定义........................................................................1

4总则..............................................................................2

5材料..............................................................................2

5.1混凝土........................................................................2

5.2钢材..........................................................................2

5.3其他..........................................................................2

6加固设计..........................................................................3

6.1一般规定......................................................................3

6.2横向预应力筋布置..............................................................3

6.3横向预应力设计................................................................3

6.4锚固块设计....................................................................3

7构造与防腐........................................................................4

7.1锚固构造......................................................................4

7.2防腐..........................................................................5

8施工工艺..........................................................................5

8.1施工准备......................................................................5

8.2铰缝处理......................................................................5

8.3锚固块安装....................................................................5

8.4预应力筋安装..................................................................5

8.5预应力筋张拉..................................................................5

9验收与养护........................................................................5