MC、HS、HSS本构模型在深基坑开挖模拟中的比较分析  

MC,HS,HSS CONSTITUTIVE MODELS ADOPTED IN COMPARATIVE ANALYSIS OF DEEP EXCAVATION MODELLING

作　　者：盛旭圆 SHENG Xuyuan(Shanghai Changkai Geotechnical Engineering Co.,Ltd.,Shanghai 200093,China)

机构地区：[1]上海长凯岩土工程有限公司,上海200093

出　　处：《低温建筑技术》2020年第7期128-131,138,共5页Low Temperature Architecture Technology

摘　　要：文中运用有限元分析软件Plaxis进行建模,对上海软土地区深基坑开挖过程进行模拟。总结归纳了上海地区土体参数设置的方法,并比较了MC、HS、HSS三种土体本构模型的模拟结果。通过三种本构模型的横向比较,及与现场监测数据的对比发现,通过设置合理的土体刚度参数及OCR值,HSS本构模型能够较为精确地模拟出围护墙体水平位移变形。This paper studies the staged construction of deep excavation in soft clay which is typical soil type in Shanghai by the FEM software Plaxis.Moreover,the setting of soil stiffness parameters and OCR value were summarized by comparing 3 different soil constitutive models which are MC,HS,HSS.Moreover,the monitoring data collected on site showed that the HSS soil constitutive model can precisely predict the wall deflection during excavation by adopting proper soil parameters.

关 键 词：基坑支护 土体本构模型 小应变 墙体水平位移 

分 类 号：TU473.2[建筑科学—结构工程]