摘要
通过数值模拟方法研究了车辆动力荷载作用对基坑开挖变形的影响,对比分析了考虑车辆动力荷载、不考虑车辆动力荷载、不考虑车辆荷载三种荷载工况下基坑围护结构及周围土体变形规律。分析认为:基坑开挖完成后考虑车辆动力荷载与不考虑车辆动力荷载作用下基坑围护结构最大侧移差值不超过5%,地表最大沉降差值不超过5%,考虑车辆荷载与不考虑车辆荷载作用下坑底最大隆起位移差值不超过10%。
The influence of vehicle dynamic load on the deformation caused by the construction dis- turbance of metro deep foundation pit was studied by using FEM numerical simulation. The horizontal displacements of lateral wall, the settlements of ground, the bottom heaves under three different load conditions （vehicle dynamic load, vehicle static load, no vehicle load） were compared. The results show that the differences of the maximum lateral wall displacement and the maximum ground settlement between two different load conditions （vehicle dynamic load, vehicle static load） were both less than 5 %, and the difference of maximum bottom heave between two different load conditions （ vehicle dynam- ic load, no vehicle load） is less than 10%.
出处
《低温建筑技术》
2017年第5期60-63,共4页
Low Temperature Architecture Technology
关键词
地铁深基坑
车辆荷载
数值模拟
metro deep foundation pit
vehicle load
numeric simulation
