Analyzing And Optimizing The Bearing Behaviors Of Gravity Anchorage System For Suspension Bridge

With the continuous improving requirements of bridges'span capacity, suspension bridges, as the largest span capacity have become the main programme when bridge large rivers. As a major bearing structure of the suspension bridge, passing a main cable pull to the foundation, bearing the majority pull of the main cable, the anchorage is the essential part of supporting the main cable to ensure the stability of the whole structure of the main bridge.This thesis taking Wuhan Yangluo Yangtze River Highway Bridge as engineering background, using gravity anchorage stability theory and the strength analysis theory between the anchor block and the foundation, under the large-scale structural analysis procedures ANSYS environment, established the finite element model of Wuhan Yangluo Yangtze River Highway Bridge Anchorage Pit and the supporting structure. On the basis of finite element model carried out a detailed finite element analysis aiming at different working conditions, and drew a quantitative conclusion of the stress distribution, accordingly optimized rationally the bearing of anchorage under the premise of security. Analysis Wuhan Yangluo Yangtze River Highway Bridge in South foundation bearing capacity, anti-slip stability, stability and anti-overturning the settlement, and analysis oblique section shear of the anchorage. Using 3D nonlinear finite element analysis theory simulate the foundation excavation process, carried out Force and deformation characteristics by the deformation of character and in non-uniform under the load of the overall structure of the displacement, And both results were compared. By optimizing analysis, the largest excavation in control deformation of not more than finite element analysis of the results of the premise, may reduce the lower part of the thickness of several lining Road. The analysis method and the conclusion can be applied to this project and other similar projects.