Study On Influence Of Pit Excavation To The Pile Of The Adjacent Cloverleaf Junction Foundation

With the development of the urbanization, as well as the popularization of high-rise buildings and subways, deep foundations pits spring up. The insufficiencies of the distortion control make the ambience detrimental effect in the deep foundation pit excavation construction of the soft ground region. The paper researched emphatically on the excavation effect of the deep foundation pit.The foundation engineering not only should be stable but also decrease the effect on the sounding environment. Unfortunately, the researches and outcomes are rare on the influence of the deformation of the piles during the excavation of the deep foundation pits. However, the problems we meet in the actual projects are becoming more and more. As a result, this study is very full of exploratory. The research on the example of effect on the surrounding environment of the Tianjin 2 connecting bridge piles expects to point out the index system, controlling standards and methods to decrease the effects during the construction of the pit, so it has some analytical meanings and application values.The paper selected the representative RedStat subway to carry out the research work. The subway is on the side of ShunChi station. We have monitored the surficial and deep level sedimentation of the foundation environment and shoring structure, the distortion of the cloverleaf junction to obtain the virtual monitoring data on the process of the project. Then, I have analyzed the pit excavation course with tree-dimensional model of the finite difference method and calibrate the computation module with the measured data. The paper have probed in the controlling factor of the pit excavation to the sounding environment and researched the regularity. At last, the paper gave the distortion effect range of the pile in the process of the pit excavation.The calculation procedure of the paper could exactly simulate the practical situation of the pit building construction. The outcome of the theoretical analysis dovetailed preferably with the measured data and the conclusion could be used as validly reference to the similar problems in the future.