淤沙的塑性性质对混凝土坝地震反应的影响研究

英文篇名：Research on influence of sediment plasticity on seismic response of concrete dams
中文刊名：水力发电学报
英文刊名：Journal of Hydroelectric Engineering
作者：闫毅志 ; 张燎军 ; 魏述和 ; 杨具瑞
英文作者：YANG Yizhi~(1 ; 2 ; 3) ; ZHANG Liaojun~(1 ; 2) ; WEI Shuhe~(1 ; 2) ; YANG Jurui~3(1.The State Key Laboratory of Hydrology-Water Resource and Hydraulic Engineering of Hohai University ; Nnajing 210098 ; 2.College of Water Conservancy and Hydropower Engineering ; Hohai University ; Nanjing 210098 ; 3.College of Electric Power Engineering ; Kunming University of Science and Technology ; Kunming 650051)
中文关键词：水工结构 ; 地震反应 ; 有限单元法 ; 淤沙 ; 饱和多孔液固两相介质 ; 混凝土坝
英文关键词：hydraulic structure ; seismic response ; FEM ; sediments ; saturated porous fluid-solid two-phase medium ; concrete dams
出版日期：2009-10-25
机构：河海大学水文水资源与水利工程科学国家重点实验室;河海大学水利水电学院;昆明理工大学电力工程学院;
年：2009
期：05
出版单位：水力发电学报

摘要

就淤沙对混凝土坝的地震响应问题,基于液固两相介质的Biot固结理论,推导了饱和多孔液固两相介质的压力波动方程,用于确定淤沙对混凝土坝的地震响应大小。把淤沙看作塑性材料,分析了淤沙层密度、凝聚力和摩擦角对混凝土坝地震响应的影响。通过算例分析表明,淤沙塑性性质对坝体地震响应的影响较为明显。
In this paper,the equations of pressure waves in saturated porous fluid-solid two-phase medium are derived by applying the Biot's consolidation theory to determine the effects of sediments on the seismic response of concrete dam,with sediment regarded as elastic-plastic material.These equations are used to analyze the influence of sediments density,cohesion and friction angle on seismic response of dams.A test case is given to show the considerable effect of sediment plasticity on the dam response.

引文

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