| 液化区埋地管线的数值模拟分析 |
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| 引用本文： | 柳春光,柯国敏.液化区埋地管线的数值模拟分析[J].世界地震工程,2010,26(1). |
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| 作者姓名： | 柳春光 柯国敏 |
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| 作者单位： | 大连理工大学,工程抗震研究所,辽宁,大连,116024 |
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| 基金项目： | 国家自然科学基金项目，国家"十一五"科技支撑计划项目 |
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| 摘 要： | 利用ANSYS有限元分析软件,建立了由场地土液化引起的地下管道上浮反应的分析模型。用土弹簧模型模拟地下管道的受力特点,考虑了管土之间相互作用的非线性特征,通过算例分析了管道在发生上浮反应时的应力应变曲线,探讨了液化区埋地管道在发生上浮位移时的受力特征,得出了一些有意义的结果。主要有:管线的应力应变以轴向为主,并且管顶和管底的受力最大,管侧相对于管顶和管底轴向应力应变很小可以忽略;最大应变位于液化区和非液化区交界处;管线中点处等效应力达到极值等等。
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| 关 键 词： | 场地土液化 地下管道 上浮 土弹簧模型 应力应变 |
Analysis for seismic response of buried pipeline in liquefied soil |
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| LIU Chunguang,KE Guomin.Analysis for seismic response of buried pipeline in liquefied soil[J].World Information On Earthquake Engineering,2010,26(1). |
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| Authors: | LIU Chunguang KE Guomin |
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| Institution: | LIU Chunguang,KE Guomin(Institute of Earthquake Engineering Da Lian University of Technology,Dalian 116024,China) |
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| Abstract: | An analytic model for the floatation response of buried pipeline in liquefied soil is established by using finite element analysis software of ANSYS.In order to simulate the force feature of the buried pipeline,the soil spring model is used and the nonlinear characteristics for pipe-soil interaction are also considered.The stress-strain curves of the buried pipeline caused by floatation response are analyzed through an example.And the stress characteristics of buried pipeline in liquefied soil when occurrin... |
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| Keywords: | soil liquefaction buried pipeline floatation response soil spring model stress and strain |
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