| 采用等效弹簧边界分析埋地管线在沉陷情况下的反应 |
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| 引用本文： | 柳春光,冯晓波.采用等效弹簧边界分析埋地管线在沉陷情况下的反应[J].地震工程与工程振动,2009,29(6). |
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| 作者姓名： | 柳春光 冯晓波 |
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| 作者单位： | 大连理工大学,土木水利学院,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： | 场地的不均匀沉陷是导致埋地管线破坏重要原因之一.到目前为止,国内外对沉陷区埋地管线的反应分析甚少.为了真实地分析管线在沉陷情况下的反应,通过引入一个非线性弹簧,作为分析埋地管线在沉陷情况下反应的边界条件,以代替远处直线段管线的变形,将管线模拟成四节点薄壳单元,土介质简化为弹塑性弹簧,采用线性位移加载来模拟土体的沉陷作用,对有限元模型进行计算分析.通过实例计算,得出了管线的控制力,找出了管线的控制截面,为沉陷区埋地管线的设计提供一定的理论依据.
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| 关 键 词： | 埋地管线 非线性弹簧 等效 沉陷 |
Using equivalent spring boundary to analyze the responses of buried pipeline subjected to ground settlement |
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| LIU Chunguang,FENG Xiaobo.Using equivalent spring boundary to analyze the responses of buried pipeline subjected to ground settlement[J].Earthquake Engineering and Engineering Vibration,2009,29(6). |
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| Authors: | LIU Chunguang FENG Xiaobo |
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| Institution: | LIU Chunguang,FENG Xiaobo(School of Civil & Hydranlic Engineering of Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The uneven settlement is one of the important factors which lead to damage to buried pipeline.So far,the response analysis of buried pipeline is few both at home and abroad.In order to analyze the response of buried pipeline subjected to the settlement,we introduce an equivalent spring boundary,the pipeline is simulated by four-node thin shell element and the soil is modeled by nonlinear springs.The ground settlement is achieved by loading the linear displacements.Finally,an example is provided for buried p... |
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| Keywords: | buried pipeline nonlinear spring equivalent settlement |
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