地震学报2017，Vol.39Issue(5)：798-805,8.DOI:10.11939/jass.2017.05.013
地震动参数对边坡地震响应的影响规律
Influence law of ground motion parameters on soil slope seismic response
摘要
Abstract
Six groups of strong ground motion records with different characteristic parameters were selected as seismic input,a two-dimensional slope model with homogeneous soil was established based on the finite element numerical simulation method,and then the acceleration and displacement responses of the slope model were calculated and analyzed.Finally the influence degree and laws of the PGA,frequency spectrum and duration on the slope responses in earthquakes were revealed.The results showed that the PGA,characteristic period and duration all had an significant effect on slope seismic response.It was also indicated that the displacement of the slope foot and shoulder evidently increased with increase of the PGA,characteristic period and duration of earthquakes,and the amplification coefficients of PGA along the slope free surface also increased with increase of characteristic period while decreased with increase of the PGA.The result can provide reference for the design and prevention of slope stability under earthquake effect.关键词
地震动参数/土质边坡/动力响应/影响规律Key words
ground motion parameters/soil slope/dynamic response/influence laws分类
天文与地球科学引用本文复制引用
张江伟,李小军,袁颖,迟明杰,陈苏..地震动参数对边坡地震响应的影响规律[J].地震学报,2017,39(5):798-805,8.基金项目
国家自然科学基金(51639006,51421005)、国家重点研发计划(2016YFC1402800)和中央公益科研院所基本业务专项(DQJB15C07)联合资助. （51639006,51421005）
