地铁车站深基坑开挖支护变形数值模拟研究

Numerical Simulation of Deformation of Deep Foundation Pit Support of a Subway Stati

文中以青岛市上合地下交通项目中的地铁车站基坑为研究背景,并基于ABAQUS有限元软件建立了基坑开挖过程的弹塑性有限元数值模型,对地铁车站深基坑开挖进行仿真模拟计算,预测了基坑地表沉降及支护结构的变形,同时结合现场监测数据进行对比分析,验证了围护方案的可行性及所建立数学模型的有效性。

A study was conducted on the foundation pit of a subway station in the Qingdao Shanghe underground transportation project.The research involved establishing an elastic-plastic finite element numerical model using ABAQUS software to simulate the excavaiton process of the foundation pit.The model was used to calculate the deep ecxavation of the subway station's foundation pit,predict the surface settlement of the pit,and estimate the deformation of the supporting structure.A comparison and analysis were performed by comparing the results with on-site monitoring data.This allowed for the verification of hte feasibility of the enclosure scheme and the validity of them athematical model.