Numerical Simulation Analysis of Effects of Tunnel Construction on Stress and Deformation of Existing Bridge Piers,Abutments,and Foundations
Based on the bridge pier foundation engineering of Yumo Railway Tunnel closely crossing Sixiao Expressway,a finite element model was established to study the effects of the tunnel construction on the stress and deformation of the existing bridge piers,abutments,and foundations.The analysis results showed that the most unfavorable influencing range of the tunnel excavation on the expressway bridge pier foundation was the front and back excavation sections centered on the closest excavation surface.When the tunnel construction was in the most unfavorable range of the expressway,the settlement and horizontal displacement of the upper pile were large and those of the lower pile were small.The deformation of Pier No.4 and the foundation of Sixiao Expressway met the stability requirements.The tunnel construction had little effect on the axial force and frictional resistance of the pile.
tunnel constructionexisting bridge pier and abutmentnumerical simulationdeformationstress
万方数据
维普
