基于接触单元的埋地管线有限元抗震分析

上海大学学报(自然科学版) ›› 2009, Vol. 15 ›› Issue (3): 306-309.

基于接触单元的埋地管线有限元抗震分析

陈家伟叶志明陈玲俐

上海大学土木工程系，上海 200072

出版日期:2009-06-30 发布日期:2009-06-30
通讯作者: 叶志明(1954~)，男，教授，博士生导师，博士, 研究方向为计算力学和工程力学. E-mail: zmye@staff.shu.edu.cn

Seismic Finite-Element Analysis of Buried Pipeline Based on Contact-Element

CHEN Jia-Wei, XIE Zhi-Meng, CHEN Ling-Li

Department of Civil Engineering, Shanghai University, Shanghai 200072, China

Online:2009-06-30 Published:2009-06-30

摘要/Abstract

摘要：

埋地管线有多种简化计算模型，但计算结果相差较大.管土之间的相互作用可以看成管土接触问题，利用接触单元建立埋地管线及土体三维实体模型，并对地震荷载作用下的管线进行应力计算，给出了最大轴向应力.对比规范方法、理论方法、梁-土弹簧模型、管土接触模型的4种计算结果，现有简化模型的计算结果偏小，偏于不安全.

关键词: 地下管线；管土接触；地震分析；有限元法

Abstract:

There are some simple models of pipeline with clearly different results. Interaction between the pipeline and soil can be considered as pipesoil contact. Based on the pipesoil contact model, a 3D finiteelement model of buried pipeline and soil is established in the paper. Seismic responses of pipeline and the axis stress are given. Comparison among several methods including the standard method, a theoretical method, the beamsoilspring model and the proposed pipesoil contact model show that the results of simple models are too small and not safe enough.

Key words: buried pipeline; pipesoil contact; seismic analysis; finite element methods （FEM）

中图分类号:

TU96.1

陈家伟叶志明陈玲俐. 基于接触单元的埋地管线有限元抗震分析[J]. 上海大学学报(自然科学版), 2009, 15(3): 306-309.

CHEN Jia-Wei, XIE Zhi-Meng, CHEN Ling-Li. Seismic Finite-Element Analysis of Buried Pipeline Based on Contact-Element[J]. Journal of Shanghai University（Natural Science Edition）, 2009, 15(3): 306-309.