地震工程学报2016，Vol.38Issue(3)：333-337,352,6.DOI:10.3969/j.issn.1000-0844.2016.03.0333
基于P-Z模型的直立墙振动台试验数值模拟
Numerical Simulation of Shaking Table Test for Vertical Wall Based on P-Z Model
摘要
Abstract
Based on calibrated parameters of the generalized plastic model of gravel material ap-plied to static and dynamic triaxial experiments,a numerical simulation of the shaking table test for a vertical wall structure is performed.The experimental and numerical results are compara-tively analyzed to further study the failure process and failure characteristics of vertical wall structures under earthquakes.Results show that the numerical model could simulate the earth-quake response and failure characteristics of the vertical wall structure.The failure mode of the vertical wall structure located in gravel foundation is a seaward horizontally slip,tilt,and settle-ment of the vertical wall.The failure process of the vertical wall structural was found to be as fol-lows:when the input acceleration is small,the vertical wall is in a steady state;with the gradual increase of the input acceleration,the vertical wall starts to horizontally slip and incline and back-fill gravel appear under the action of the seismic inertia force and dynamic earth pressures,but the displacement is small.When the acceleration reaches a certain value,the movement speed of the vertical wall and subsidence rate of the backfill gravel increase dramatically and the vertical wall structure exhibits significant deformation.关键词
直立墙/广义塑性模型/振动台试验/有限元分析Key words
vertical wall/generalized plastic model/shaking table test/finite element analysis分类
土木建筑引用本文复制引用
孔宪京,张争超,邹德高,刘京茂,周扬..基于P-Z模型的直立墙振动台试验数值模拟[J].地震工程学报,2016,38(3):333-337,352,6.基金项目
地震行业科研专项经费项目(201208013) （201208013）
国家自然科学基金项目(51138001,51508071) （51138001,51508071）
