Theoretical Calculation and Parametric Analysis of Tunnel Settlements Due to Neighboring Over-length Pile Groups

摘要

According to influence of pile groups of high-rise buildings on metro tunnels nearby,the research is made to analyze the stress of soil and the settlement of neighboring tunnels caused by pile groups.Based on the hypothesis of pile groups under flexible cushion cup,the plain strain of profile of tunnels is calculated by combining the load spreading property along over-length piles and Mindlin answer and the formula of displacement field of soil.In this way,MATLAB programs are made to get some useful conclusions by analyzing the influence factor of the settlements of tunnels such as the distance between them and the collocation of piles,the loading level and the scale of piles.