GB50739-2011：复合土钉墙基坑支护技术规范

本规范共分7 章和2 个附录，主要内容包括总则、术语和符号、基本规定、勘察、设计、施工与检测、监测等.

GB50739-2011······1

1 总则······9

2 术语和符号······10

2.1 术语······10

2.2 符号······11

3 基本规定······14

4 勘察······16

5 设计······18

5.1 一般规定······18

5.2 土钉长度及杆体截面确定······20

5.3 基坑稳定性验算······23

5.4 构造要求······29

6 施工与检测······33

6.1 一般规定······33

6.2 复合土钉墙施工······34

6.3 降排水施工······38

6.4 基坑开挖······39

6.5 质量检查······39

7 监测······42

附录A 土钉抗拔基本试验······43

附录B 土钉抗拔验收试验······45

本规范用词说明······47

引用标准名录······48

附:条文说明······49

1 总则······52

2 术语和符号······53

2.1 术语······53

3 基本规定······54

4 勘察······59

5 设计······61

5.1 一般规定······61

5.2 土钉长度及杆体截面确定······63

5.3 基坑稳定性验算······64

5.4 构造要求······68

6 施工与检测······71

6.1 一般规定······71

6.2 复合土钉墙施工······72

6.3 降排水施工······73

6.4 基坑开挖······73

7 监测······74

附录A 土钉抗拔基本试验······75

附录B 土钉抗拔验收试验······76