| In urban areas, many high-rise building are supported by pile foundation,There is a great impact on adjacent pile foundation due to the excess ground movements by tunneling,Unavoidable ground movements due to tunneling will impose additional axial and lateral internal forces on piles which may lead to structural distress or failure ofthe piled foundation,The study on the influence of tunneling to the behaviors of adjacent piles is very important for the safety of adjacent buildings.Aim at these problems that is the Guomao station of Beijing subway No.10 line,this paper anansyed reponse of pile group on settlement and bearing capacity caused by tunneling through both theoretical and numerical simulatiuon,and some control measures for metro tunneling adjacent piles are put forward.1. Use two step analysis to set up the load transfer equation between the pile of soil,adopting the fitting methods to solve the equation so as to educe the pile displacement of arbitrary section as well as the analytical solution. Based on pile displacement,the strain of the arbitrary section can be settled out,as well as the axial force and side fictional resistance.2. On the reference materials of triaxial rheological test research of adjacent soil of Guomao subway station,use the Kelvin viscoplasticity Model,a Tunnel-abutment-soil numerical model is created to study the effect on adjacent bridge piles by FLAC3D software,and the reponses of adjacent piles induced by tunneling by Drift-PBA with time are researched from settlement,axial force,side fictional resistance,bending moment,cap contact pressure and tip resisrance of existed pile.3. At last,giving several measures of controlling piles deformation by tunneling.
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