摘要
随着城市的发展,地铁周边的建设项目越来越多,研究新建项目地下结构施工对既有地铁结构的影响尤为重要。本文以广州南沙软土地区某邻近地铁高架结构的深基坑工程为背景,结合其地质条件及其支护结构设计及基坑施工特点,采用有限元方法,模拟并分析了深基坑施工过程及其对邻近地铁高架结构变形的影响。结果表明:支护结构起到较好的支护效果,深基坑施工对邻近地铁高架结构影响较小;基坑开挖至底时对高架结构影响最为明显,并可据此评估高架影响的监测范围。
With the development of the city, there are more and more construction projects around the subway, thus it is particularly important to study the influence of underground structure construction of new projects on existing subway structures.Basing on the project of deep excavation adjacent to the elevated subway in soft soil area of Guangzhou Nansha, combining with the engineering geological conditions and the design features of supporting structure and the construction features of the pit, the finite element method is employed to establish numerical model to simulate and analyze the influence of the construction of the deep excavation pit to the deformation of adjacent elevated subway.The results show that the supporting structure play a good supporting effect and the construction influence on the elevated subway is little;when the deep excavation pit is excavated to the bottom, the influence on the elevated subway is most obvious, and the monitoring range of the influence of elevated subway can be evaluated accordingly.
作者
邹家南
ZOU Jianan(Guangzhou Nansha Kechuang Real Estate Co.,Ltd.,Guangzhou 511458,Guangdong,China)
出处
《工程建设》
2022年第12期56-60,78,共6页
Engineering Construction
关键词
深基坑
软土地区
地铁高架
变形影响
有限元分析
deep excavation pit
soft soil area
elevated subway
the influence on deformation
finite element method
