Response Analysis of the Hanging Basket for Cantilever Casting the Curved Bridges of the Fanling Viaduct in Hong Kong
Selecting the Fanling Viaduct in Hong Kong as the engineering background,the three-dimension finite element model of the rhombic hanging basket for cantilever casting curved girders is established,and the structural response analysis is implemented considering various loads and different cases in the aspects of strength,stiffness,and stability.Results show that responses of the rhombic hanging basket can meet the requirements of the current codes under different construction stages.When the concreting is done for the first segment,safety margins of the guide beam system,the suspension rods,and the rear anchor beam of the rhombic hanging basket are relatively small,thus key monitoring should be carried out on these areas during actual construction.In contrast,safety margins of the rhombic hanging basket components are at a relatively high level under the moving process.Furthermore,as the cantilever casting structure being a curved beam,compared to the hanging basket on the inner side of the curve,the maximum force on the hanging basket on the outer side of the curve can be increased by about 20%.
万方数据
维普
