水文地质工程地质2013，Vol.40Issue(5)：58-63,6.
基于土拱效应下的地震作用与抗滑桩桩间距关系分析
An analysis of the relationship between seismic action and pile spacing of anti-slide piles based on soil arch effect
摘要
Abstract
Based on the soil arch effect among anti-slide piles,the mechanics analysis model of soil arch effect for seismic action is established.On the basis of the Mononobe-Okabe theory and assuming that the soil arch effect is equivalent to retaining wall effect,the calculation method of the horizontal seismic force in the soil arch surface is presented under the seismic fortification intensity.According to the static equilibrium condition and strength condition of piles soil in the limit equilibrium state,the landslide thrust and seismic force is considered and the theoretical calculation formula of spacing between piles are otabined.Under the same conditions,engineering examples and series of trial show that spacing between piles reduce from 4％ to 23％ when the seismic action is considered.The calculation formula of direct reduction factor and reduction coefficient for spacing between piles in different seismic fortification levels are attained.关键词
抗滑桩/土拱效应/地震作用/桩间距Key words
anti-slide pile / soil arching effect / seismic action/ spacing between piles分类
天文与地球科学引用本文复制引用
焦赟,白千千..基于土拱效应下的地震作用与抗滑桩桩间距关系分析[J].水文地质工程地质,2013,40(5):58-63,6.基金项目
甘肃省科学院应用研究与开发基金项目(2012-JK-05) （2012-JK-05）
