JGJ/T375-2016：管幕预筑法施工技术规范

本规范的主要技术内容是：1.总则；2.术语和符号；3.基本规定；4.施工准备；5.群管顶进施工；6.钢管切割、焊接与切口支撑；7.管幕预筑结构施工；8.洞室土方挖运及结构施工；9.防水施工；10.辅助性施工措施；11.施工监测。

JGJT375-2016······1

1 总则······13

2 术语和符号······14

2.1 术语······14

2.2 符号······15

3 基本规定······16

4 施工准备······17

4.1 一般规定······17

4.2 工作井······17

4.3 垂直与水平运输系统······18

4.4 施工通风系统······18

5 群管顶进施工······20

5.1 一般规定······20

5.2 先导管······20

5.3 顶进设施······20

5.4 洞口加固及破除······21

5.5 顶进施工······21

5.6 控制测量与纠偏······24

5.7 质量检查与控制······25

6 钢管切割、焊接与切口支撑······26

6.1 一般规定······26

6.2 钢管切割······27

6.3 钢板焊接······28

6.4 切口支撑······29

6.5 质量检查与控制······29

7 管幕预筑结构施工······31

7.1 一般规定······31

7.2 模板制作、安装及拆除······31

7.3 钢筋加工及安装······32

7.4 混凝土浇筑······32

7.5 预留接口部位处理······33

8 洞室土方挖运及结构施工······34

8.1 一般规定······34

8.2 洞室土方挖运······34

8.3 结构施工······35

9 防水施工······37

9.1 一般规定······37

9.2 一般部位防水······37

9.3 特殊部位防水······37

10 辅助性施工措施······39

10.1 一般规定······39

10.2 超前预注浆······39

10.3 减阻注浆······40

10.4 壁后泥浆置换······40

10.5 填充注浆······40

10.6 地下水控制······40

11 施工监测······42

11.1 一般规定······42

11.2 工作井施工期监测······42

11.3 钢管顶进及管幕结构施工期监测······43

11.4 洞室开挖及结构施工期监测······45

11.5 资料整理与信息反馈······45

附录A 钢管顶进质量检查记录······46

附录B 钢管顶进施工记录······47

附录C 钢板焊接及切口支撑质量检查记录······48

本规范用词说明······49

引用标准名录······50

附：条文说明······51

1 总则······55

3 基本规定······57

4 施工准备······59

4.1 一般规定······59

4.2 工作井······59

4.3 垂直与水平运输系统······60

4.4 施工通风系统······60

5 群管顶进施工······62

5.1 一般规定······62

5.2 先导管······62

5.3 顶进设施······63

5.4 洞口加固及破除······64

5.5 顶进施工······64

5.6 控制测量与纠偏······72

6 钢管切割、焊接与切口支撑······75

6.1 一般规定······76

6.2 钢管切割······76

6.3 钢板焊接······76

6.4 切口支撑······76

7 管幕预筑结构施工······77

7.1 一般规定······77

7.2 模板制作、安装及拆除······77

7.3 钢筋加工及安装······77

7.4 混凝土浇筑······77

7.5 预留接口部位处理······78

8 洞室土方挖运及结构施工······79

8.1 一般规定······79

8.2 洞室土方挖运······79

8.3 结构施工······80

9 防水施工······81

9.1 一般规定······81

10 辅助性施工措施······82

10.1 一般规定······82

10.2 超前预注浆······82

10.3 减阻注浆······83

10.4 壁后泥浆置换······83

10.5 填充注浆······83

10.6 地下水控制······83

11 施工监测······84

11.1 一般规定······84

11.3 钢管顶进及管幕结构施工期监测······84