路基工程Issue(3)：220-224,5.DOI:10.13379/j.issn.1003-8825.2017.03.47
某地铁车站基坑盖挖法施工数值模拟分析
Numerical Simulation Analysis of Foundation Pit Excavation Based on Cover-excavation Method of Metro Station
摘要
Abstract
To understand the impact of foundation pit excavation,the deformation caused during the foundation pit excavation is researched so that the foundation pit is supported effectively during actual construction.For this purpose,a numerical model is established for the foundation pit excavation based on the cover-excavation method of a metro station in Wuchang to determine suitable construction conditions,and perform contrastive analysis for the support deformation and internal force of all excavation stages.The results show that the maximum defection location of the support structure moves downwards with increase in excavation depth,and large deformation is caused in the middle of the support structure;during asymmetric excavation,large deformation and internal force are caused on the support structure of the foundation pit;cover plate,pavement structure and load can aggravate the impact on neighboring support structure;the change of the external force is large on the sideway support during the excavation,and different sideway supports achieves different support effect during different excavation stages.关键词
地铁车站/基坑开挖/盖挖法/数值模拟/plaxis/变形Key words
metro station/foundation pit excavation/cover-excavation method/numerical simulation/plaxis/deformation分类
建筑与水利引用本文复制引用
王梦迟,牛建军,杨智杰..某地铁车站基坑盖挖法施工数值模拟分析[J].路基工程,2017,(3):220-224,5.
