地基不均匀沉降下输气场站埋地管道应力分析  

Stress Analysis of Buried Pipeline in Gas Transmission Station Under Uneven Settlement of Ground

作　　者：李智昕 包瑞新[1] 夏广宇 王宏亮 米雪 LI Zhixin;BAO Ruixin;XIA Guangyu;WANG Hongiang;MI Xue(School of Mechanical Engineering,Liaoning Petrochemical University;China Aviation Oil Group Liaoning Petroleum Co.,Ltd.)

机构地区：[1]辽宁石油化工大学机械工程学院 [2]中国航油集团辽宁石油有限公司

出　　处：《管道技术与设备》2024年第2期28-33,共6页Pipeline Technique and Equipment

基　　金：2022年大学生创新创业训练计划项目(S202210148021);辽宁省自然科学基金项目(20180550466)。

摘　　要：在天然气输气场站地质为软土的情况下,容易造成地基的不均匀沉降,埋地管线易受到损伤。文中利用ABAQUS有限元软件进行分析,建立了管道-土体一体化有限元力学模型,分析了在地基不均匀沉降下,埋地管道的受力与位移情况,沉降量对管道应力的影响,研究了在管道壁厚、管道压力、管道埋深和土壤粘聚力变化下管道的应力变化,获取了管道最大Mises应力变化规律。When the natural gas transmission station is soft soil,it is easy to cause uneven settlement of the foundation,and the buried pipeline is easy to be damaged.In this paper,ABAQUS finite element software was used for analysis,and an integrated finite element mechanical model of pipeline and soil was established.The stress and displacement of buried pipeline under uneven settlement of foundation were analyzed,as well as the influence of settlement amount on pipeline stress,and the stress changes of pipeline under changes in pipeline wall thickness,pipeline pressure,pipeline burial depth and soil cohesion were explored.The maximum Mises stress variation rule was obtained.

关 键 词：ABAQUS 有限元分析 地基不均匀沉降 埋地管道 应力分析 

分 类 号：TE973[石油与天然气工程—石油机械设备]