内容简介
DB13(J) /T 8341-2020备案号∶ J15097-2020
直埋球墨铸铁热力管道设计标准
Design code of directly buried ductile iron pipelines for thermal network
（高质量发展系列标准-2）
2020-06-01 实施
2020-03-07 发布
前 言
本标准是根据河北省住房和城乡建设厅《关于印发 2019年度省工程建设标准和标准设计第二批制（修）订计划的通知》（冀建节科函〔2019〕27号）会同有关单位编制而成。
本标准，编制组经广泛调查研究，认真总结实践经验，参考有关国内标准，并在广泛征求意见的基础上，编制了本标准。
本标准主要包括8章，主要技术内容包括∶1.总则;2.术语与符号;3.基本规定;4.材料;5.设计;6.固定墩;7.保温;8.功能性试验。
目次
1 总则·········································································1
2 术语和符号······························································· 2
2.1 术语································································· 2
2.2 符号································································· 3
3 基本规定·································································· 8
4 材料······································································· 10
4.1 主要材料···························································10
4.2 辅材································································ 13
4.3 连接管件···························································16
5 设计······································································· 19
5.1 管道布置···························································19
5.2 管道敷设···························································21
5.3 管道附件与设施··················································· 22
5.4 管道应力验算······················································22
6 固定墩···································································· 29
6.1 管道对固定墩的作用··············································29
6.2 回填土对固定墩的作用···········································29
6.3 固定墩应力验算··················································· 31
7 保温······································································· 34
7.1 安全保温层厚度计算··············································34
7.2 经济保温层厚度计算··············································37
7.3 接口保温设计······················································40
8 功能性试验······························································41
8.1 清洗································································ 41
8.2 管道水压试验······················································42
附录 A K 级球墨铸铁管壁厚和工作压力···························43
附录 B固定墩、固定支架承受的推力计算······················· 45
附录 C 河北省及临近主要城市地温月平均值···················· 48
本标准用词说明···························································· 51
引用标准名录······························································· 52
条文说明······································································53
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