Key Technologies and Numerical Simulation for Demolition of the Bridge Adjacent to Expressway
In order to study the key technology of the"cutting+steam crane"method in demolition of the bridge adjacent to expressway,based on the reconstruction and expansion project of Haimen-Tongzhou section of Nantong-Wuxi Expressway,this paper analyzes the construction process for demolition of the C ramp across Shenyang-Haikou Expressway Bridge by the double-crane lifting method,and the demolition of Bianxi River Medium Bridge by the suspension bridge method on bridge,and uses ANSYS Workbench software to analyze the impact of the crane lifting on the expressway surface.The influence of leg hardening band and plate beam is studied by numerical simulation.The research results show that when the bridge is removed by double-crane lifting method,the leg hardening zone can effectively ensure the safe operation of the crane,and the impact of the crane leg on the expressway surface and the leg hardening zone is small;The suspension bridge method on bridge is a safe and effective way to remove the bridge.The deformation and stress of the plate beam directly below the crane leg are small,meeting the bridge safety requirements.
NETL
NSTL
万方数据
维普
