| 第三方载荷作用下埋地输气管道动力响应的数值模拟 |
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| 引用本文： | 赵师平,曾祥国,姚安林,王清远,石宵爽,邢义峰.第三方载荷作用下埋地输气管道动力响应的数值模拟[J].四川建筑科学研究,2009,35(1). |
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| 作者姓名： | 赵师平 曾祥国 姚安林 王清远 石宵爽 邢义峰 |
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| 作者单位： | 1. 四川大学建筑与环境学院,四川,成都,610065
2. 西南石油大学建筑工程学院,四川,成都,610500 |
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| 基金项目： | 国家自然科学基金重大项目 |
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| 摘 要： | 强夯是导致埋地输气管道第三方破坏的主要载荷形式之一.强夯下埋地输气管道动力响应问题的本质是夯锤-土-埋地管道组成的体系在冲击荷载下的整体动力响应.利用LS-DYNA有限元商业软件,基于非线性动力学基本理论和动态算法,在半无限土介质中,通过对动力参数和接触参数的合理设置,在验证某工程实例的基础上,选取适当的本构关系,从夯击能量的大小、夯锤和管道之间的间距和管道表面复土深度三个方面对强夯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,得出了埋地输气管道在夯击荷载下的动力响应规律.结果表明,采用数值模拟方法对研究强夯冲击荷载作用下埋地输气管道的动力响应是可行的,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.
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| 关 键 词： | 强夯冲击荷载 埋地输气管道 动力接触 数值模拟 |
Dynamic response numerical simulation of buried gas pipeline during third-party interference |
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| ZHAO Shiping,ZENG Xiangguo,YAO Anlin,WANG Qingyuan,SHI Xiaoshuang,XING Yifeng.Dynamic response numerical simulation of buried gas pipeline during third-party interference[J].Building Science Research of Sichuan,2009,35(1). |
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| Authors: | ZHAO Shiping ZENG Xiangguo YAO Anlin WANG Qingyuan SHI Xiaoshuang XING Yifeng |
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| Affiliation: | ZHAO Shiping1,ZENG Xiangguo1,YAO Anlin2,WANG,Qingyuan1,SHI Xiaoshuang1,XING Yifeng1(1.College of Architecture , Environment,Sichuan University,Chengdu610065,China,2.College of Civil Engineering , Architecture,Southwest Petroleum University,Chengdu610500,China) |
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| Abstract: | Dynamic compaction is one of the main load forms which result in the broken of the buried gas pipeline during third-party interference.The mechanical relationship among hammer,soil and pipeline was virtually the relationship of dynamic contact under dynamic load.Based on LS-DYNA with the basic theory of nonlinear dynamic mechanics and dynamic calculation method,in the semi-infinite soil medium,by setting dynamic and contact parameters suitably,based on validating the practical project choosing suitable cons... |
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| Keywords: | dynamic compaction loads buried gas pipeline dynamic contact numerical analysis |
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