基于法向应力突变的双排抗滑桩土拱效应的数值分析  

Numerical Analysis of Soil Arching Effect in Double-Row Anti-Slide Piles Based on the Mutability of Normal Stress

作　　者：王诚[1] 石少卿[1] 陈暲 陈自鹏[1] 

机构地区：[1]后勤工程学院军事土木工程系,重庆401311 [2]后勤工程学院国防建筑规划与环境工程系,重庆401311

出　　处：《河南科学》2016年第4期530-536,共7页Henan Science

基　　金：国家自然科学基金项目(51378495)

摘　　要：土拱效应是抗滑桩与土相互作用的重要现象之一.应用有限元软件,采用法向应力突变的新方法分析双排抗滑桩桩后土拱效应,研究了桩后土拱效应发生的机理,分析了桩间距、桩排距、布置方式等影响因素对桩后土拱效应的影响,并结合桩土荷载分担比作了对比分析.分析表明法向应力突变的方法是一种分析土拱效应的有效方法,布置方式对双排抗滑桩土拱效应影响明显,梅花型布置优于平行布置.Soil arching effect is one of the important phenomena in interaction of anti-slide piles and soil. By usingthe FEM software and a new method of the mutability of normal stress,the occurrence of soil arching effect indouble-row piles and the effects of factors on the soil arching effect such as distance of piles,row spacing and thelayout have been studied. Meanwhile,a comparative analysis of load-bearing ratio is made. It is concluded that themutability of normal stress is an effective way to study the soil arch effect,the layout of piles plays an important rolein soil arching effect and quincuncial layout is better than the parallel layout.

关 键 词：抗滑桩 土拱效应 有限元 法向应力 

分 类 号：TU43[建筑科学—岩土工程]