条形面板加筋土挡墙拓宽旧路基的三维数值模拟分析  

3D Numerical Simulation on Old Subgrade Widening with Strip Panel Reinforced Retaining Wall

作　　者：王泉清[1] 陈铖[1] 向静静[1] 刘清清[1] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《路基工程》2014年第5期53-56,共4页Subgrade Engineering

摘　　要：采用ABAQUS软件对条形面板加筋土挡墙拓宽旧路基建立三维弹塑性有限元模型,将新老路基与地基作为一个整体考虑,计算并分析不同工况新旧路基位移与应力分布、面板侧向位移、旧路基变形特征以及筋材应变的变化规律。结果表明,该三维有限元模型能够很好地模拟加筋拓宽路基变形、基底土压力变化、墙面侧向位移以及土工格栅应力应变的分布规律。A three-dimensional elastoplastic finite element model for old subgrade widening with strip panel reinforced retaining wall was established with ABAQUS software,which considered the new and old subgrade,and the foundation as a whole to calculate and analyze,in different cases,displacement and stress distributions in the new and old subgrade,lateral displacement of the panel,deformation characteristics of the old subgrade,and change law of the reinforcement strain.The results show that this three-dimensional model may commendably simulate deformation of this widened subgrade,variation of soil pressure at the base,and lateral displacement of the wall,and distribution laws of stress and strain in the geogrid.

关 键 词：加筋土挡墙 旧路拓宽 土工格栅 三维有限元分析 

分 类 号：U417.115[交通运输工程—道路与铁道工程]