Study On The Influence Of Offshore And Coastal Foundation Pit On The Adjacent Pile Foundation

With the development of city construction in our country,more and more deep excavation works have appeared,deep foundation pit will influence the surrounding buildings and structures during excavation,the bridge pile is a special structure,this paper is based on the first phase.A section of shenzhen seashore avenue(xi xiang road— xixiang avenue section),study the effect of excavation of tunnel foundation pit on yanjiang high speed bridge pile.For the four dangerous sections of the continental segment,use ABAQUS for numerical simulation,for the more complicated section of sea segment,use Midas GTS for numerical simulation,the main contents of this paper are as follows:1.Half-section model and full-section model are compared in ABAQUS,the four continental sections are simulated numerically,and upheaval of the bottom,ground subsidence,continuous wall deformation,axial force of internal support and deformation of bridge pile are analyzed.2.The seepage flow in the excavation of the foundation pit is simulated by using the linear elastic model in ABAQUS,and the pore pressure cloud map and the flow velocity cloud map are analyzed.3.Sea section is simulated using Midas GTS,considering the influence of continuous seepage on foundation pit and bridge pile,and the displacement of foundation pit,axial force of supporting,deformation of continuous wall,deformation of bridge pile,bending moment of bridge pile,seepage path of foundation pit are analyzed.4.The deformation of bridge piles is explained,and the influence of the length of bridge pile,the distance between the bridge pile and the foundation pit,the depth of the continuous wall and the elastic modulus of the bridge pile are discussed.