Shaking Table Test and Numerical Simulation Study on Tunnel-Soil-Bridge Pile Structure Interaction System

In this study, based on the actual project in Dalian, dynamic interaction of double tunnel sand bridge pile system (SSSI) under earthquake action is studied by shaking table test, and response laws structure site are obtained, which compared with ABAQUS numerical simulation. The Kelvin constitutive model subprogram introduced into model, equivalent linear method used to deal nonlinear problems calculation process. experimental results obtained using verify reliability Based this, eight working conditions designed, law between structures investigated through a comparative analysis. showed that amplifies responses pile, adjacent tunnel, far field, while attenuates side field; presence both increases internal force structure, peak often occurs near intersection or at pile–soil interface.