沉埋桩加固滑坡体模型试验的三维有限元模拟  

Three dimensional FEM simulation of slope reinforcement by deeply-buried pile

作　　者：陈卫兵[1] 郑颖人[2] 雷文杰[3] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071 [2]中国人民解放军后勤工程学院军事土木工程系,重庆400041 [3]河南理工大学安全科学与工程学院,河南焦作454003

出　　处：《岩土力学》2007年第S1期273-276,共4页Rock and Soil Mechanics

基　　金：国家973项目(No.2002CB412708);中国科学院知识创新工程重要方向性项目(No.KJCX2-YW-L01);国家十一;五科技支撑计划(No.2006BAB04A06)。

摘　　要：为了研究沉埋桩加固滑坡的力学机制,兰州中铁西北研究院完成进行了5组沉埋桩的室内大型物理模型试验。在沉埋桩加固滑坡体的模型试验中,坡体不同部位的桩所受到的推力有显著差别,呈现明显的的空间效应,因此不能等同于平面应变问题。对多组模型试验进行了三维非线性有限元模拟,数值模拟结果与试验数据相近,证明有限元方法可以用于沉埋桩的设计。In order to study the mechanism of how deeply-buried piles reinforce slope,five groups of large scale physical model tests were conducted in the lab of Chinese Northwest Railway Academic of Science. In the experiments,pressure endured by deeply-buried pile in different places is not the same,which indicates that the experiment can’t be simplified to plane strain problem. Finally,several groups of model tests are simulated by three-dimensional finite element of elastic-plasticity. The result is almost identical to the experimental data,this justifies the application of three-dimensional fem method to design deeply-buried pile.

关 键 词：沉埋桩 三维有限元 边坡加固 模型试验 

分 类 号：TU473.1[建筑科学—结构工程]