滚石作用下钢质管道动力响应分析及其应用  

DYNAMIC RESPONSE ANALYSIS OF STEEL PIPELINE UNDER ROCK IMPACT AND ITS APPLICATION

作　　者：邢义锋[1] 姚安林[2] 曾祥国[1] 李又绿[2] 王清远[1] 赵师平[1] 蒋宏业[2] 

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]西南石油大学建筑工程学院,成都610500

出　　处：《工业建筑》2009年第S1期462-465,519,共5页Industrial Construction

基　　金：西气东输管道工程项目(07H461);四川大学"985"科技创新平台引进人才项目

摘　　要：落石是导致埋地输气管道破坏的主要载荷形式之一,工程中需要解决落石对管道的动态响应问题,落石对埋地输气管道动力响应问题的本质是落石-土-埋地管道组成的体系在冲击荷载下的动力响应。利用LS-DYNA有限元软件,从管道内压、落石水平距离、管道厚度等方面对落石冲击荷载作用下埋地输气管道的动力响应问题进行了数值模拟研究,得出了管道应力等变化规律。其计算结果对埋地输气管道的风险评估、设计和施工具有一定的参考价值。Dynamic impact is one of the main load forms which result in the broken of the buried gas pipeline.It is necessary to solve the problem for the project.The interaction among rock,soil and pipeline was virtually the relationship of dynamic contact under dynamic load.Based on LS-DYNA,the dynamic response of buried gas pipeline under dynamic impact is gained by the numerical simulation analysis including three aspects: the pipeline pressure,the distance between rolling rock and pipeline,the pipe thickness.And the rule of stress change in the gas pipeline is got.The conclusion may provide some references for the risk evaluation,design and construction of buried gas pipeline.

关 键 词：崩塌落石 冲击荷载 埋地输气管道 数值模拟 管道防护 

分 类 号：TU392.3[建筑科学—结构工程]