JGJ/T419-2018：长螺旋钻孔压灌桩技术标准

JGJT419-2018······1

1 总则······11

2 术语和符号······12

2.1 术语······12

2.2 符号······12

3 基本规定······13

4 设计······14

4.1 一般规定······14

4.2 基桩抗压承载力计算······15

4.3 桩身构造······19

5 施工······21

5.1 一般规定······21

5.2 施工准备······22

5.3 施工机具······22

5.4 材料······22

5.5 成孔······23

5.6 混凝土压灌······24

5.7 钢筋笼制作及植入······25

5.8 成品桩的保护······26

6 检验与验收······27

6.1 一般规定······27

6.2 施工前检验······28

6.3 施工过程检验······29

6.4 施工后检验······29

6.5 施工验收······30

本标准用词说明······31

引用标准名录······32

附: 条文说明······33

1 总则······36

3 基本规定······38

4 设计······39

4.1 一般规定······39

4.2 基桩抗压承载力计算······39

4.3 桩身构造······43

5 施工······44

5.1 一般规定······44

5.2 施工准备······45

5.3 施工机具······45

5.4 材料······47

5.5 成孔······47

5.6 混凝土压灌······48

5.7 钢筋笼制作及植入······49

5.8 成品桩的保护······51

6 检验与验收······52

6.1 一般规定······52

6.3 施工过程检验······52

6.4 施工后检验······52