沿海地区非均匀沉降下阀室管道安全运行研究  

Research on Safe Operation of Pipeline with Valve Chamber under Non-uniform Settlement in Coastal Area

作　　者：冯毅[1] 邹志豪 马小明[1] Feng Yi;Zou Zhihao;Ma Xiaoming

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640

出　　处：《机械制造》2020年第12期41-44,共4页Machinery

摘　　要：为了保证天然气长距离输送管道的安全运行,对沿海地区非均匀沉降下阀室管道的安全运行进行研究。应用ANSYS软件建立阀室管道沉降作用有限元分析模型,通过计算建立沉降量与等效应力之间的映射关系,使等效应力随沉降量的增大而增大。以许用应力作为管道失效破坏的标准,预测管道发生失效破坏时的极限沉降量,以此作为管道实时监测的理论依据。在研究中还分析了管道内压、管道内径、管道壁厚、管道填埋深度、土壤泊松比等因素对管道应力状态的影响,并对天然气阀室管道的安全运行提出了建议。In order to ensure the safe operation of long-distance natural gas transmission line,the safe operation of pipeline with valve chamber under Non-uniform settlement in coastal area was studied.The ANSYS software was used to establish a finite element analysis model of the pipeline with valve chamber under settlement,and the mapping relationship between the settlement volume and the equivalent stress was established through calculation,so that the equivalent stress increased with the increase of the settlement.The allowable stress was used as the criteria of pipeline failure and breach,and the Non-uniform settlement upon occurrence of pipeline failure and breach was predicted,which was used as the theoretical basis for real-time monitoring of the pipeline.In the study,the influence of pipeline internal pressure,pipeline inner diameter,pipeline wall thickness,pipeline landfill depth,soil Poisson’s ratio and other factors on the stress state of the pipeline were also analyzed,and suggestions were made for the safe operation of natural gas pipeline with valve chamber.

关 键 词：非均匀沉降 管道 安全性 

分 类 号：TH6[机械工程—机械制造及自动化] TE832[石油与天然气工程—油气储运工程]