中华人民共和国住房和城乡建设部公告第404号

前言

1　总则

2　术语

3　工程规划

• 3.1　一般规定

• 3.2　管材选择

• 3.3　管道布置

4　工程设计

• 4.1　水力计算

• 4.2　管道结构设计

• 4.3　附属设施设计

5　工程施工

• 5.1　一般规定

• 5.2　管区填土材料

• 5.3　管沟开挖

• 5.4　地基与基础

• 5.5　管道连接与安装

• 5.6　管沟回填

6　工程验收

• 6.1　基础及管区填土施工检验

• 6.2　管道变形检验

• 6.3　严密性试验与水压试验

• 6.4　竣工验收

7　运行维护

附录A　聚乙烯钢肋螺旋复合管主要技术指标

附录B　管区填土分级

附录C　管区填土适用条件

附录D　土的单位抗力系数

附录E　稳定土层判定指标

本规范用词说明

引用标准名录

1 General provisions

2 Terms

3 Project planning

• 3.1 General requirements

• 3.2 Pipe material selection

• 3.3 Pipeline layout

4 Engineering design

• 4.1 Pipeline hydraulic calculation

• 4.2 Pipeline structural design

• 4.3 Appurtenances design

5 Project construction

• 5.1 General requirements

• 5.2 Pipe trench filling material

• 5.3 Pipe trench excavation

• 5.4 Base and foundation

• 5.5 Pipeline connection and installation

• 5.6 Pipe trench backfilling

6 Project examination for acceptance

• 6.1 Inspection of base and pipe trench filling construction

• 6.2 Pipe deformation inspection

• 6.3 Pipe seal pressure test

• 6.4 Completion acceptance

7 Operation and maintainance

Appendix A Technical indicators of polyethylene spiral pipe with steel rib

Appendix B Pipe trench filling granding

Appendix C Pipe trench fill suit conditions

Appendix D Factor of unit risistance force of soil

Appendix E Stable soil layer determinants

Explanation of wording in this code

List of quoted standards