内容简介
DB42/T 1253-2017桥梁拆除技术规范
Technical specification for bridge demolition
（报批稿）
2017-07-01实施
2017-04-12发布
目 次
前言 ................................................................................1
引言 ..................................................................................1
1 总则 ............................................................................... 1
2 规范性引用文件 ..................................................................... 1
3 术语与符号 ......................................................................... 1
4 基本要求 ........................................................................... 3
5 桥梁拆除方式 ....................................................................... 3
5.1 一般规定 ..................................................................... 3
5.2 人工拆除 ..................................................................... 4
5.3 机械拆除 ..................................................................... 4
5.4 爆破拆除 ..................................................................... 4
6 桥梁拆除计算 ....................................................................... 4
6.1 一般规定 ..................................................................... 4
6.2 待拆桥梁结构计算 ............................................................. 5
6.3 临时结构计算 ................................................................. 6
7 梁式桥拆除 ......................................................................... 6
7.1 一般规定 ..................................................................... 6
7.2 简支梁桥拆除 ................................................................. 7
7.3 连续梁桥拆除 ................................................................. 7
7.4 刚构桥拆除 ................................................................... 8
8 拱式桥拆除 ......................................................................... 9
8.1 一般规定 ..................................................................... 9
8.2 圬工拱桥拆除 ................................................................. 9
8.3 钢筋混凝土拱桥拆除 ........................................................... 9
8.4 钢管混凝土拱桥拆除 .......................................................... 10
8.5 组合体系拱桥拆除 ............................................................ 10
9 缆索体系桥梁拆除 .................................................................. 10
9.1 一般规定 .................................................................... 10
9.2 悬索桥拆除 .................................................................. 10
9.3 斜拉桥拆除 .................................................................. 10
10 桥梁下部结构拆除 ................................................................. 11
10.1 一般规定 ................................................................... 11
10.2 墩台拆除 ................................................................... 11
10.3 基础拆除 ................................................................... 11
11 桥梁拆除监控 ..................................................................... 11
11.1 一般规定 ....................................................................11
11.2 桥梁拆除监控计算 ............................................................12
11.3 桥梁拆除施工监测 ............................................................12
11.4 桥梁拆除施工反馈控制 ........................................................14
12 桥梁拆除安全控制 ..................................................................14
12.1 一般规定 ....................................................................14
12.2 爆破拆除安全控制 ............................................................15
12.3 非爆破拆除安全控制 ..........................................................15
13 环境保护..........................................................................16
附录 A（资料性附录） 桥梁拆除主要方法 .................................................17
附录 B（规范性附录） 爆破拆除分级与参数计算............................................20
附录 C（规范性附录） 混凝土待拆构件强度计算............................................23
本规范用词用语说明 ....................................................................25
条 文 说 明...........................................................................27