砂井地基沉降的二维有限元分析(一)——三维问题转换为二维平面应变问题  

Settlement analysis of the foundation with vertical drains by two-dimension FEM (Ⅰ)——transformation of axisymmetric vertical drains into plain vertical drains

作　　者：陈建峰[1] 秦建庆 石振明[1] 沈明荣[1] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]上海市水环境建设公司,上海201203

出　　处：《四川建筑科学研究》2003年第3期80-82,共3页Sichuan Building Science

基　　金：上海市重点学科建设项目资助

摘　　要：砂井地基严格地说是一个三维问题,需要用三维有限元来分析。本文作者考虑了砂井地基的井阻和涂抹区效应,建立了轴对称砂井和平面砂墙之间渗透系数以及几何尺寸的等效关系式,使三维问题的砂井地基转化为二维问题来处理,以减少三维问题很大的计算工作量。The foundation with vertical drains is strictly considered a threedimension problem,which needs threedimension FEM to analyze its settlement.This paper establishes the relationship of coefficients of permeability and geometry(drain spacing)between axisymmetric vertical drains and plain vertical drains,considering both well resistance and smear zone effects.Thus matching the two problems can be achieved by adjusting the geometry and the permeability of the soil.

关 键 词：地基沉降 渗流 二维有限元 砂井地基 固结 

分 类 号：TU435[建筑科学—岩土工程]