重庆大学学报2016，Vol.39Issue(2)：123-130,8.DOI:10.11835/j.issn.1000-582X.2016.02.016
穿越正断层埋地管线的破坏模式分析
Analysis of the failure modes for continuous buried pipeline crossing the normal fault region
摘要
Abstract
Tensile,shear strength and other forms of damages,even buckling failure in local compression zones will happen to buried pipelines under the action of ground permanent large deformation caused by normal fault movement.We used ABAQUS software to establish a three-dimensional pipe-soil interaction model under the ground permanent deformation,adopted nonlinear contact method to simulate the pipeline-soil interaction,and analyzed the influence of different pipe-diameters and crossing angles on the failure mode.By analyzing some examples,it is showed that tensile strength damage is prone to happen to small-diameter pipelines,while buckling failure to thin-wall large-diameter pipelines,and the critical value of pipe-diameter from intensity damage to buckling failure is 0.65 m.When crossing angle is bigger than 90°, the bigger the angle is,the easier buckling failure happens.And the critical value of crossing angle from intensity damage to buckling failure is 100°.关键词
正断层作用/埋地管线/非线性接触/破坏模式Key words
normal fault/buried pipeline/nonlinear contact/failure mode分类
建筑与水利引用本文复制引用
薛娜,李鸿晶,李秀菊,金浏,翟聚云..穿越正断层埋地管线的破坏模式分析[J].重庆大学学报,2016,39(2):123-130,8.基金项目
国家自然科学基金项目（50678084）；江苏省普通高校研究生科研创新计划项目（自然科学）（CXZZ110344）；河南省高等学校重点科研项目（15A560003，14B560027）；河南城建学院科学研究基金（2014JZDXK001）。Supported by National Natural Science Fund of China （50678084），Scientific Research Fund for graduate students of Jiangsu Province （Natural Science）（CXZZ110344），Scientific Research Fund for Higher Education of Henan Province （15A560003，14B560027）and Scientific Research Fund of Henan University of Urban Construction （2014JZDXK001）． （）
