XJJ146-2022······1

1 總則······6

2 術(shù)語與符號(hào)······7

2.1 術(shù)語······7

2.2 符號(hào)······9

3 基本規(guī)定······13

4 管道、管件及附件······15

4.1 一般規(guī)定······15

4.2 工作管······15

4.3 保溫層與外護(hù)管······18

4.4 連接管件······19

5 管道布置與敷設(shè)······22

5.1 管道布置······22

5.2 管道敷設(shè)······24

5.3 管道連接方式······24

5.4 管道附件與設(shè)施······25

5.5 管道保溫計(jì)算······26

5.6 管道水力計(jì)算······27

6 固定墩設(shè)計(jì)······29

6.1 管道對(duì)固定墩的作用······29

6.2 回填土對(duì)固定墩的作用······29

6.3 固定墩應(yīng)力驗(yàn)算······31

7 管道應(yīng)力驗(yàn)算······34

7.1 柔性連接管道應(yīng)力驗(yàn)算······34

7.2 柔性-剛性混合連接管道應(yīng)力驗(yàn)算······37

7.3 熱伸長計(jì)算······40

8 管道安裝······42

8.1 一般規(guī)定······42

8.2 溝槽開挖······43

8.3 管道安裝與檢驗(yàn)······45

8.4 接口保溫······48

8.5 溝槽回填······50

9 試驗(yàn)、清洗、試運(yùn)行、驗(yàn)收······52

9.1 試驗(yàn)與清洗······52

9.2 試運(yùn)行······55

9.3 驗(yàn)收······56

10 維護(hù)與檢修······57

附錄A 球墨鑄鐵管性能表······60

附錄B K級(jí)球墨鑄鐵管壁厚和工作壓力······61

附錄C 密封橡膠圈性能表······63

附錄D 新疆主要城市地溫月平均值······64

附錄E 固定墩、固定支架承受的推力計(jì)算······69

本規(guī)程用詞說明······71

引用標(biāo)準(zhǔn)名錄······72