The boundary conditions for simulations of a shake-table experiment on the seismic response of 3D slope

查看全文 作　　者：Tang [1,2]Liang;Cong [1,2]Shengyi;Ling [2,3]Xianzhang;Ju [2]Nengpan

机构地区：[1]School of Civil Engineering,Harbin Institute of Technology;[2]State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology;[3]School of Civil Engineering,Qingdao Technological University

出　　处：《Earthquake Engineering and Engineering Vibration》索引2017年第16卷第1期,共10页

基　　金：National Natural Science Foundation of China under Grant Nos.41430634,51578195,51378161,and 51308547;the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology under Grant No.SKLGP2013K011 摘　　要：Boundary conditions can significantly affect a slope's behavior under strong earthquakes.To evaluate the importance of boundary conditions for finite element(FE) simulations of a shake-table experiment on the slope response, a validated three-dimensional(3D) nonlinear FE model is presented, and the numerical and experimental results are compared.For that purpose, the robust graphical user-interface 'Slope SAR', based on the open-source computational platform Open Sees, is employed, which simplifies the effort-intensive pre-and post-processing phases.The mesh resolution effect is also addressed.A parametric study is performed to evaluate the influence of boundary conditions on the FE model involving the boundary extent and three types of boundary conditions at the end faces.Generally, variations in the boundary extent produce inconsistent slope deformations.For the two end faces, fixing the y-direction displacement is not appropriate to simulate the shake-table experiment, in which the end walls are rigid and rough.In addition, the influence of the length of the 3D slope's top face and the width of the slope play an important role in the difference between two types of boundary conditions at the end faces(fixing the y-direction displacement and fixing the(y, z) direction displacement).Overall, this study highlights that the assessment of a comparison between a simulation and an experimental result should be performed with due consideration to the effect of the boundary conditions. 关键词：边界条件条件模拟边坡变形地震反应试验三维有限元模型图形用户界面固定方向

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The boundary conditions for simulations of a shake-table experiment on the seismic response of 3D slope

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