摘要
针对城市地下空间不断建造和发展的过程中,越来越多出现的基坑邻近既有地铁结构开挖的现象,通过收集国内及广州地区的工程实例,分析了基坑开挖后土体位移场的变化,总结了邻近基坑施工对既有地铁结构的影响,并选取广州农贸园工程,采用有限元分析方法对其进行了三维数值模拟,通过与实测数据对比分析,得出一些能对今后类似工程起到一定借鉴作用的结论。
In the process of continuous construction and development of urban underground space, more and more foun- dation pits excavations adjacent subway structures are bringing through. By collecting examples in Guangzhou and in urban, changes of the displacement field after excavation were analyzed and influences of the adjacent constructions of foundation pits on the existing subway structures were summed up. Moreover, Nongmao park project in Guangzhou was selected for numerical simulation using 3D continuous FEM（the finite element method）. By comparing and analyzing the results calculated with the measured data, some conclusions which can play reference roles to similar projects in future have been drawn.
出处
《岩土工程技术》
2010年第4期202-206,共5页
Geotechnical Engineering Technique
基金
青年科学基金项目(50808176)
关键词
基坑
邻近施工
地铁结构
数值模拟
实测数据
foundation pit
adjacent construction
subway structure
numerical simulation
measured data
