(上海市政工程设计研究总院（集团）有限公司， 上海 200092)

［摘要］基于上海某地下通道工程基坑围护结构前期设计案例，借助Plaxis有限元软件平台对通道基坑的开挖回筑过程进行数值模拟，探讨基坑施工对周边邻近保护建筑的影响。计算结果表明，地下通道基坑开挖对保护建筑变形的影响满足规范控制指标的要求。有限元法数值模拟可在基坑围护结构设计的前期阶段发挥指导作用。

［关键词］基坑施工； 邻近建筑； 变形； 有限元分析

中图分类号： TU93, TU46+3 文献标识码： A文章编号： 1002-848X(2015)S2-0112-04

作者简介：裴琦，硕士，工程师，Email：peiqi@smedi.com。

Finite element analysis of foundation pit construction with adjacent buildings

Pei Qi

(Shanghai Municipal Engineering Design General Institute (Group) Co., Ltd., Shanghai 200092, China)

Abstract: Based on the foundation pit retaining structure preliminary design of an underground tunnel in Shanghai, the numerical simulation of foundation pit excavation process was carried out using finite element (FEM) software Plaxis. The influences on adjacent buildings during the excavation process was discussed. The results show that deformation of the buildings nearby caused by the excavation could meet the requirements of the specification control standards. The FEM numerical simulation can play a guiding role in the early stages of retaining structures design.

Keywords: foundation pit construction; adjacent building; deformation; FEM analysis