基于Midas GTS分析的深基坑降水开挖变形特性研究

Research on Dewatering Deformation Characteristics of a Deep Foundation Pit Based on the Analysis with Midas GTS

基于Midas GTS软件对广州某深基坑开挖过程进行数值模拟,考虑渗流作用的影响,对比分析了两种情况下基坑开挖过程中周边地表沉降变形、围护结构水平位移的变化规律,并与现场地面沉降调查结果进行比较。结果表明,地下水渗流作用在基坑降水开挖过程中有显著影响。

Based on the Midas GTS software,the numerical simulation of the excavation process of a deep foundation pit in Guangzhou was carried out.Considering the influence of seepage,the change law of the surrounding surface settlement deformation and the horizontal displacement of the enclosure structure during the excavation of the foundation pit under the two conditions was compared.The results show that groundwater seepage has significant influence on the dewatering process offoundation pit.