摘要
长输管道运行环境复杂,所经地区地质条件多变,外界各种载荷共同作用导致管道悬空,影响管道的安全运营。简要介绍了实际工程模拟计算中常用的悬空管道力学模型。基于埋地管道悬空这种失效形式,选择了最佳的力学简化模型,将理论计算的应力和应变值与ABAQUS有限元分析软件仿真计算的结果进行对照,得出该管材管道的极限悬空长度L=350 m,此时管道的应力取值为517.0 MPa,应变取值为0.61%。
The operating environment of the long-distance pipeline is complex,the geological conditions are changeable in the passing through regions.Various external loads jointly lead pipeline impending,which affects safe operation of the pipeline.In this article,it briefly introduced impending pipeline mechanical model commonly used in practical engineering analog computation.Based on the buried pipelines impeding failure mode,it selected the best mechanics simplified model.The stress and strain values of theoretical calculation were compared with the result of ABAQUS finite element analysis software simulation computation,it concluded that the extreme length of the pipeline is 350 m,the pipeline stress value is 517.0 MPa,and the strain value is 0.61%.
出处
《焊管》
2014年第9期56-59,63,共5页
Welded Pipe and Tube
关键词
焊管
埋地管道
悬空失效
有限元分析
welded pipe
buried pipeline
impending failure
finite element analysis
