摘要
提出用有限元-无界元耦合的方法进行基坑支护结构内力及变形动态分析。为了模拟实际受力状态,在挡土结构与土相接触的界面上设置了一种有厚度的接触面单元。计算实例表明,所建立的分析模型可考虑支护墙体位移因开挖而引起的空间效应和由地基流变而引起的时间效应,可以计算基坑支护结构任意时刻、任意位置的内力和变形。
The coupling method of finite-infinite element is suggested to analyze the internal force and deformation of support structure for foundation pit. In order to simulate the actual situation,a new kind of interface element with thickness is installed in the interface between soil and structure. It is verified by a practical project that the new model can consider the space effect of deformation of retaining wall due to excavation and the time effect due to rheology of foundation. The deformation and internal force of support structure at any time and place can be calculated based on the program.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第3期462-466,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
基坑
支护结构
内力
变形
接触面单元
soil mechanics,finite element-infinite element,coupling,interface element,internal force,deformation
