摘要
选用 Drucker-Prager 弹塑性本构关系,建立了模拟深基坑开挖和支护全过程的平面有限元数值分析模型。运用该模型并结合工程实际,对深基坑开挖过程中边坡土体的应力场和塑性区的分布以及变形进行了分析,找出了影响深基坑变形的主要因素:支护结构的刚度、支护结构入土深度、基坑开挖深度和宽度以及土层强度参数等。
A plane finite element numerical analysis model is established to simulate excavating and supporting of deep foundation pit.based on Drucker-Prager elastoplastic constitutive relation.By means of this model combining with actual engineering,the distribution of stress field and plastic zone and the whole deformation during excavation and retaining are analyzed.The main factors that affect the deformation,such as stiffness coefficient and depth of fulcrum installing and depth of excavation and soil parameters, are found out.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2002年第S1期157-160,共4页
Rock and Soil Mechanics
关键词
深基坑工程
本构关系
有限元数值分析
变形
deep foundation pit
constitutive relation
finite element numerical analysis
deformation
