| 三种介质耦联系统动力反应分析的显式有限元法及其应用 |
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| 引用本文： | 赵成刚,李伟华,王进廷,李亮.三种介质耦联系统动力反应分析的显式有限元法及其应用[J].地震学报,2003,25(3):262-271. |
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| 作者姓名： | 赵成刚 李伟华 王进廷 李亮 |
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| 作者单位： | 1)中国北京 100044 北方交通大学土木建筑工程学院
2）中国北京 100084 清华大学土木水电学院 |
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| 基金项目： | 国家自然科学基金 (5 0 1780 0 5 )资助项目 |
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| 摘 要： | 在笔者已建立的流体饱和多孔介质动力分析的显式有限元法的基础上，提出了可分析任意形状的流体饱和多孔介质-单相弹性固体介质-理想流体介质耦联的复杂系统的动力响应的显式有限元方法．该方法建立的有限元方程列式具有解耦特征，不需求解联立方程组，因而极大地提高了计算效率．将这一方法用于分析了考虑库水、坝、淤泥层和基岩这一复杂系统动力相互作用问题的斜坝面的地震响应，并给出了一些计算结果．
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| 关 键 词： | 流体饱和多孔介质-单相弹性固体介质-理想流体介质耦联系统& 动力响应分析-显式有限元方法 |
| 文章编号： | 0253-3782(2003)03-0262-10 |
| 修稿时间： | 2002年6月17日 |
AN EXPLICIT FINITE ELEMENT METHOD FOR DYNAMIC ANALYSIS IN THREE-MEDIUM COUPLING SYSTEM AND ITS APPLICATION |
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| Zhao Chenggang Li Weihua Wang Jinting Li Liang School of Civil Engineering and Architecture,Northern Jiaotong University,Beijing ,China School of Civil Engineering & Hydropower Engineering,Tsinghua University,Beijing ,China.AN EXPLICIT FINITE ELEMENT METHOD FOR DYNAMIC ANALYSIS IN THREE-MEDIUM COUPLING SYSTEM AND ITS APPLICATION[J].Acta Seismologica Sinica,2003,25(3):262-271. |
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| Authors: | Zhao Chenggang Li Weihua Wang Jinting Li Liang School of Civil Engineering and Architecture Northern Jiaotong University Beijing China School of Civil Engineering & Hydropower Engineering Tsinghua University Beijing China |
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| Institution: | Zhao Chenggang 1) Li Weihua 1) Wang Jinting 2) Li Liang 1) 1) School of Civil Engineering and Architecture,Northern Jiaotong University,Beijing 100044,China 2) School of Civil Engineering & Hydropower Engineering,Tsinghua University,Beijing 100084,China |
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| Abstract: | In this paper, an explicit finite element method to analyze the dynamic responses of three-medium coupled systems with any terrain is developed on the basis of the numerical simulation of the continuous conditions on the boundaries among the fluid saturated porous medium, elastic single-phase medium and ideal fluid medium. This method is a very effective one with the characteristic of high calculating speed and small memory needed because the formulae for this explicit finite element method are of the characteristic of decoupling and does not need to solve system of linear equations. The method is applied to analyze the dynamic response in a reservoir with the consideration of the dynamic interactions among water, dam, sediment and foundation rock. The vertical displacement at the top point of the dam is calculated and some conclusions are given. |
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| Keywords: | saturated porous medium-elastic single-phase medium-ideal fluid medium coupled system dynamic response analysis explicit finite element method |
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