基于Plaxis的基坑悬臂开挖围护结构变形数值模拟分析

Numerical Simulation of Bracing Structure Deformation for a Deep Foundation Pit Based on Plaxis Software

基于Plaxis有限元软件,采用HSS小应变模型,以武汉8号线三期黄家湖地铁小镇站附属基坑工程为依托,通过数值模拟对基坑稳定性进行分析,得到基坑在不设内支撑情况下开挖附属基坑引起的钻孔灌注桩水平位移、主体结构变形规律,对后续工程采用类似悬臂开挖具有一定的借鉴意义。

Based on Plaxis large-scale finite element software and adopted HSS small strain model, the affiliated foundation pitof WuhanNo.8 line no.3 huangjiahu subway station is simulated. Through analyzing, the horizontal displacement of bored cast-in-place piles and main structure deformation rules caused by excavation of affiliated foundation pit without internal support are obtained. It is of great reference significance for similar deep foundation pit.