CJJ224-2014：城镇给水预应力钢筒混凝土管管道工程技术规程

CJJ224-2014······1

1 总则······12

2 术语和符号······13

2.1 术语······13

2.2 符号······14

3 材料······17

3.1 混凝土和砂浆······17

3.2 预应力钢丝······18

3.3 钢板······18

3.4 接口密封材料······18

4 水力计算······20

5 结构设计······21

5.1 一般规定······21

5.2 管道结构上的作用······23

5.3 承载能力极限状态计算规定······25

5.4 正常使用极限状态验算规定······29

6 构造······33

6.1 标准管······33

6.2 配件和异形管······33

6.3 管道基础······35

6.4 沟槽与回填土······35

6.5 管道连接······37

6.6 管道防腐······38

6.7 隧道内设置管道······38

7 管道施工······39

7.1 一般规定······39

7.2 施工降排水······39

7.3 沟槽开挖······40

7.4 沟槽支护······42

7.5 基础施工······44

7.6 管道安装······45

7.7 井室和支墩······47

7.8 沟槽回填······48

8 管道功能性试验······51

8.1 一般规定······51

8.2 接口单口水压试验······51

8.3 管道分段水压试验······52

8.4 给水管道冲洗与消毒······55

9 工程验收······56

附录A 管顶竖向土压力标准值······58

附录B 侧向土压力标准值······59

附录C 预应力张拉工艺的预应力损失······60

附录D 地面车辆荷载对管道的作用标准值······62

附录E 预应力钢筒混凝土管弹性抵抗矩······65

附录F 圆形刚性管道在荷载作用下的弯矩系数······69

附录G 管道支墩和限制接头推力标准值及抗推力标准值······70

本规程用词说明······73

引用标准名录······74

附:条文说明······76

1 总则······80

2 术语和符号······81

2.1 术语······81

2.2 符号······81

3 材料······82

3.1 混凝土和砂浆······82

3.2 预应力钢丝······83

3.3 钢板······83

3.4 接口密封材料······83

4 水力计算······85

5 结构设计······86

5.1 一般规定······86

5.3 承载能力极限状态计算规定······88

5.4 正常使用极限状态验算规定······89

6 构造······92

6.2 配件和异形管······92

6.3 管道基础······92

6.4 沟槽与回填土······93

6.5 管道连接······93

6.6 管道防腐······94

7 管道施工······96

7.1 一般规定······96

7.3 沟槽开挖······96

7.4 沟槽支护······97

7.5 基础施工······97

8 管道功能性试验······98

8.1一般规定······98

8.2 接口单口水压试验······99

8.3 管道分段水压试验······99

9 工程验收······101