摘要
以天津国际贸易中心基坑工程为例,采用Hardening-Soil模型对基坑开挖过程进行数值模拟。为更好地模拟开挖过程中支护结构的时空效应,采用有限元分步计算围护变形和基底隆起及整体稳定性,并与实测值进行对比分析。结果表明,地下连续墙体前、后土压力实测值与有限元计算结果吻合较好,用Hardening-Soil模型计算的基底回弹变形量与现场实测值比较接近。
The Hardening-soil model is used in nume rical stimulation of base pit excavating process with the Tianjin International Trade Center as an example.In order to make better simulation for time-space e ffect of shoring structure during excavating,the finite element method is adop ted to calculate step-by-step the shoring deformation,base heave and integral stability.And the results are compared with measured data.It is shown that th e measured data of soil pressure exerting on ground-wall are in good accordance with the results from finite element method and the calculated base resilience deforma-tion with Hardening-soil model is close to the measured data.
出处
《石油工程建设》
北大核心
2004年第6期19-22,共4页
Petroleum Engineering Construction
关键词
基坑工程
基坑支护
HS模型
土压力
回弹量
计算
base pit engineering
base pit shoring
HS model
soil pressure
resilience value
calcu-lation
