软土深基坑变形影响因素研究及数据分析

Study on Influencing Factors of Deformation of Deep Foundation Pit in Soft Soil and Data Analysis

文中以某基坑为实例,先开展其变形影响因素分析,再结合现场监测成果,分析沉降变形和侧向位移的变形特征。分析结果表明,软土基坑的变形影响因素相对较为复杂,主要包括土体参数的影响、支护结构的影响、施工开挖顺序的影响及施工超载的影响。同时,不同位置的沉降变形和侧向位移存在一定差异,两者对比得出,侧向位移值要略大于沉降变形值,且侧向位移的波动性相对更强。

This paper first analyzes the deformation influencing factors of a foundation pit,and then analyzes the deformation characteristics of settlement deformation and lateral displacement combined with the on-site monitoring results.The analysis results show that the influence factors of soft soil foundation pit deformation are relatively complex,mainly including the influence of soil parameters,the influence of supporting structure,the influence of construction excavation sequence and the influence of construction overload.At the same time,there are some differences between the settlement deformation and lateral displacement at different locations.By comparing the two,it is concluded that the lateral displacement value is slightly greater than the settlement deformation value,and the fluctuation of the lateral displacement is relatively stronger.