加筋土挡墙有限元分析材料模型综述

对20世纪60年代以来国内外加筋土挡墙有限单元分析中采用的几种方法进行了简单介绍,并分别指出它们的优缺点。对加筋土结构有限元计算时经常采用的一些本构模型进行了详细介绍,并着重描述了一种可用于模拟接触面的结构性模型———复合体模型。目前加筋土挡墙的有限元模型基本上均是二维平面模型,建议计算工作者建立三维模型,并考虑筋———土、面板———土、基础———墙体之间相互作用。指出将基于微观理论的结构性模型用于模拟加筋土体,特别是筋———土接触面,是一个新的研究方向。

Summary on Finite Element Method Model of Reinforced Earth Retaining Wall

Several finite-element methods that used to analyse reinforced soil wall are introduced in this paper.And advantages and disadvantages in these methods are pointed out.In numerical simulation by FEM of reinforced soil structure,the constitutive models are most important.Some constitutive models which widely used in analyzing reinforced soil structures are described,especially a microstructure constitutive model.The finite element models for reinforced soil wall usually are modeled as a plane-strain two dimensional problem.So a 3-D model should be adopted.A new research aspect in which use microstructure model to simulate reinforced soil,especially interface between reinforcement and soil are advanced.