水平-竖向组合式加筋土挡墙土-筋相互作用机理  

Interaction between Soil and Inclusions in Retaining Wall Reinforced with Horizontal and Vertical Inclusions

作　　者：彭明远[1] 黄超[1] 彭基敏[1] 张孟喜[1] 

机构地区：[1]上海大学土木工程系,上海200072

出　　处：《上海大学学报（自然科学版）》2009年第2期199-204,共6页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(50678100)

摘　　要：在水平加筋的基础上布置竖向筋条,实现"立体"加筋,同时使土体和筋条之间的相互作用关系变得更加复杂。采用有限元方法,通过建立加筋土结构模型来分析水平-竖向组合式(H-V)加筋土挡墙中土-筋的相互作用关系,并且运用强度折减系数法,分析水平加筋土挡墙和H-V加筋土挡墙达到极限破坏时的安全系数,同时比较两者达到极限破坏时其塑性区域的分布状况。In conventional reinforced soils, the reinforcements are often laid horizontally in the soil. A novel concept of soil reinforced with horizontal and vertical （H-V） reinforcements is proposed in this paper. In the proposed H-V reinforced soil, besides conventional horizontal reinforcements, some vertical reinforcing elements are also placed in the soil. The finite element method is used to analyze the interaction between soil and reinforcements. The strength reduction method is used to study instability of the retaining wall. With the method of c-tan φ reduction, comparisons between H-V reinforced soil and traditional reinforced soil in the safety factor and plastic strain distribution are made when the finite element method （FEM） models reach instability.

关 键 词：水平-竖向组合式加筋 土-筋相互作用 有限元法 强度折减系数法 

分 类 号：TU443[建筑科学—岩土工程]