防灾减灾工程学报2017，Vol.37Issue(5)：795-801,7.DOI:10.13409/j.cnki.jdpme.2017.05.015
可液化地基群桩基础地震反应总应力与有效应力分析的比较
Comparison Study of Total Stress and Effective Stress Analyses for Seismic Response of Pile Group Foundation in Liquefiable Soil
摘要
Abstract
Seismic responses of pile group may be varies significantly when adopting different constitutive models to describe the liquefiable soils.Based on the modified Davidenkov constitutive model and the strain-based Byrne pore pressure increment model,comparison of total stress and effective stress analysis for seismic responses of the pile group foundation in liquefiable soil was performed.The results show that soil outside the pile group is higher liquefaction potential,soil in free field is low liquefaction potential,and soil within the pile group is lowest liquefaction potential.Compared with the results of total stress analyses,the surface acceleration response spectra of effective stress analyses presents the characteristics of low frequency amplification and high frequency wave-filtering,and the predominant periods of spectra move toward long periods;in addition,the bending moments of the piles along the depth are slightly larger.关键词
群桩基础/可液化场地/地震反应/总应力法/有效应力法Key words
pile group foundation/seismic response/liquefiable site/total stress analysis/effective stress analysis分类
建筑与水利引用本文复制引用
戴琰,陈国兴,王志华..可液化地基群桩基础地震反应总应力与有效应力分析的比较[J].防灾减灾工程学报,2017,37(5):795-801,7.基金项目
交通运输部西部交通建设科技项目(2009318225100)资助 （2009318225100）
