研究依托济南市济泺路穿黄隧道汽修厂站深基坑工程,对地下水位变化对地下连续墙顶水平位移的影响进行了研究,得到以下结论:(1)随着基坑的开挖,地下连续墙顶水平位移呈现出逐渐增大的状态.(2)通过分析现场数据,在第6天时地下水位明显下降,地下连续墙顶水平位移也出现显著的变形.(3)针对水位变化对地下连续墙顶水平位移的影响,从地下水位优化控制方法和基坑支护结构优化控制方法两方面,对地下连续墙变形进行有效控制.
The study relied on the deep foundation pit project of the Ji'nan Jiluo road yellow tunnel automo-bile repair plant station to study the impact of groundwater level changes on the horizontal displacement of the top of the diaphragm wall.The following conclusions were obtained:(1)With the excavation of the foundation pit,the horizontal displacement of the top of the diaphragm wall gradually increases.(2)By analyzing on-site data,on the 6 th day,the groundwater level significantly decreased and the horizontal displacement of the top of the diaphragm wall also showed significant deformation.(3)In response to the impact of water level changes on the horizontal displacement of the top of the diaphragm wall,effective control of the deformation of the diaphragm wall is carried out from two aspects:the optimization control method of groundwater level and the optimization control method of foundation pit support structure.