Study on Hanging Basket for Asynchronous Cantilever Construction of Wide Corrugated Steel Web Composite Box Girder
Based on the Huaihe Bridge in Anhui Province,this paper analyzes the asynchronous cantilever construction process of wide corrugated steel web composite box girder.Through the combination of theoretical analysis and numerical simulation,the reasonable structural form and mechanical performance of the hanging baskets are studied.The type Ⅰ and type Ⅱ asynchronous hanging basket structures that meet the requirements of block hoisting and integral hoisting are developed,and their structural parameters,advantages and disadvantages are analyzed.The research results show that the wide corrugated steel web composite box girder structure is suitable for cantilever construction by asynchronous construction method.For the case where the construction period is not limited and limited,type Ⅰ and type Ⅱ hanging basket structures can be preferentially considered for construction.The stiffness and strength of the type Ⅰ hanging basket structure adopted by the Huaihe Bridge meet the construction requirements,and the corrugated steel webs,top and bottom plates at the cantilever end of the composite box girder are in good stress state.
cable-stayed bridgescorrugated steel webshanging basketsbox girderscantileverasynchronous construction
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