Study On The Settlement Caused By Foundation Pit Construction

With the rapid development of high-rise buildings and underground engineering,foundation pit engineering began showing some characteristics that a large scale,the depth of excavation of deep excavation and foundation pit surrounding environment complexity.From the aspects of mechanics effect,Foundation pit excavation is a kind of unloading of excavation on the surrounding environment,this will cause displacement of the surrounding soils and change the internal structure of the corresponding,using different tools and methods for study the influence of the foundation pit excavation has become a hot topic in academia.Using field monitoring data,combined with theoretical analysis,the influence of adjacent foundation pit excavation has important significance.Based on the field monitoring data and theoretical analysis of Hangzhou area, the deformation characteristics and the mutual influence of foundation pit excavation are analyzed. The main results are as follows:1.Refer to a large number of research materials about foundation pit, summarizes different scholars on the research conclusion and method of foundation pit, inspiration from these conclusions, so as to put forward my own research ideas and methods.2.The influence of foundation pit excavation on the surrounding environment is analyzed, and the mechanism of the influence of excavation on the surrounding environment is studied.3.The biggest impact of the foundation pit excavation is the uneven settlement of the soil, this paper mainly studies the mechanism of the uneven settlement of the surrounding soil caused by the foundation pit construction.4.Proposed the new theoretical analytical solution of foundation pit construction cause the soil around the uneven settlement,and verified with practical engineering measurement data, demonstrates that the theoretical result is very close to measured data of actual project, it can guide the engineering practice.Analysis of the interaction of two adjacent foundation pit,the result shows that the settlement in the middle of two foundation pit in the interaction region has a superimposed effect,this increase the uneven settlement and affect the stability of the adjacent soil greatly.