摘要
本文阐述了有限元分析软件PLAXIS中小应变土体硬化模型的理论依据,并探讨了其计算参数的选取方法。结合上海地区地铁车站深基坑工程项目,分别采用HS模型及HSS模型进行了有限元模拟分析,并将模拟结果与实测监测数据进行对比,计算对比表明,HSS模型分析结果较HS模型而言,在围护墙的变形及墙后地表沉降等方面都更符合实际情况,验证了HSS模型较常用的本构模型而言更适用于模拟上海地区城市深基坑开挖问题。
This paper describes the theoretical basis for Hardening Soil Small-strain Model in the finite element analysis software PLAXIS, and discusses the method of selecting its calculation parameters. Combined with deep excavationin Shanghai subway station project, HSmodel and HSS model are analyzed by the finite element analysis, and simulation results are compared with the measured monitoring data. The comparison of the calculation shows in the deformation of enclosure wall and surface subsidence after the wall, the calculation results of HS model are more in line with the actual situation than HSmodel. It verifies that HSS model is more suitable than the commonly used constitutive modelfor simulation of deep excavation in Shanghai.
出处
《上海水务》
2015年第1期29-32,35,共5页
Shanghai Water
关键词
深基坑
HSS模型
参数确定
有限元分析
deep foundation
HSS model
parameters to determine
finite element simulation
