压力容器2017，Vol.34Issue(1)：25-29,5.DOI:10.3969/j.issn.1001-4837.2017.01.005
考虑等效边界弹簧的输气管道穿越断层壳-接触有限元模型
Shell-contact Finite Element Model of Pipeline Crossing Fault Considering Equivalent Boundary Springs
摘要
Abstract
Using the theory of the pipe-soil interaction,the equivalent boundary spring acting on the segment where the pipeline yielding occurs was derived.Considering the essence of the pipeline crossing the fault,the shell-contact finite element model was established,where the equivalent boundary spring was contained.To validate the accuracy of the proposed model,the referred finite element model was established,having the large dimension of the model.The results show that the relative errors between the proposed model and the referred model are within 2.85%,3.06%,2.94%,3.95% for the maximum axial displacement and strain,as well as the axial displacement and strain on the pipeline-fault intersection.For smaller fault displacement,the local buckling is easy to occur for the pipeline,while the tensile failure of the pipeline is prone to occur for larger fault displacement.关键词
输气管道/地震断层/等效边界弹簧/壳-接触模型/管土作用Key words
gas pipeline/fault/equivalent boundary spring/shell-contact model/pipe-soil interaction分类
机械制造引用本文复制引用
张立松,张士岩,闫相祯,杨秀娟..考虑等效边界弹簧的输气管道穿越断层壳-接触有限元模型[J].压力容器,2017,34(1):25-29,5.基金项目
山东省油气储运安全省级重点实验室,青岛市环海油气储运技术重点实验室资助课题 （）
