球墨铸铁自锚管道免支墩设计方法的对比分析

Comparison and analysis of restrained joint for ductile iron pipe design without thrust block

自锚管是球墨铸铁管的一种特殊接口产品,可以在弯头、三通、盲端等地方使用,达到取代水泥支墩的目的。2021年11月,ISO 21052:2021《Restrained joint systems for ductile iron pipelines—calculation rules for lengths to be restrained》正式发布,本文对标准编制阶段,各国专家关注的几种球墨铸铁管自锚长度计算标准及方法进行了对比分析,指出了他们之间的差异性,对下一步的研究方向给出了建议。

Restrained joint pipe is a special interface product of ductile iron pipe,which can be applied at the places like bends,tees and dead ends and so on,so that to replace the traditional concrete thrust blocks.ISO 21052:2021 Restrained joint systems for ductile iron pipelines—calculation rules for lengths to be restrained was published officially in November 2021.This paper compares and analyzes several calculation methods&criteria concerned by experts from different countries during the standard establishment for ductile iron pipeline length to be restrained.This paper also indicates the difference among them then to give some suggestions for further research.