柔性基础复合地基桩土应力比的有限元分析  

Finite Element Analysis of Pile-soil Stress Ratio of Flexible Foundation and Composite Ground

作　　者：朱云升[1] 郭忠印[1] 丘作中[2] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海20009 [2]武汉理工大学交通学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2004年第1期18-21,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：交通部人才培养计划项目资助 (批准号 :95 -0 5 -0 5 -16)

摘　　要：通过有限元分析方法 ,对柔性基础复合地基桩土应力比问题进行了研究 .在考虑了复合地基中各种材料的非线形特性的基础上 ,讨论了高填土路堤这类柔性基础下桩土类复合地基桩土应力比同桩土间相对刚度、荷载水平及桩体桩长等因素的关系 ,同时通过改变基础刚度值 ,分析在不同的基础刚度复合地基中桩土应力比的变化 。A pile soil stress ratio is a significant parameter in composite ground design, it is a factual working status of stress distribution between pile and soil in composite ground. The stress ratio between pile and soil is not a constant. There are a lot of factors influencing its value. The method of three dimensional nonlinear finite element is used to analyze the stress ratio between pile and soil in flexible foundation composite ground in this article. The relationships among the pile soil stress ratio and pile soil relative stiffness, pile length, foundation stiffness are obtained from the analysis.

关 键 词：柔性基础 复合地基 桩土应力比 桩体刚度 荷载水平 桩长 

分 类 号：U461.12[机械工程—车辆工程]