The Bridge Key Parts Of Bridge Crane Girder Design And Analysis

Combined with engineering practice, in this paper, bridge crane span increased the weight, under the condition of main girder strength and rigidity of key parts for the research and design. The main research contents and methods were as follows:1.Using analytic method, established the mechanics model of main girder structure, increased the weight, by checking the car in girder across the strength and stiffness,to find out the problems existing in the main girder; To meet the strength and stiffness, the use of optimization calculation software, on the basis of the original girder structure meet the conditions of material consumption minimum, to the main girder structure is optimized calculation, the design scheme was finally determined.2. Using the numerical method and the finite element software, the limited element model was established before and after the design.the design of main girder structure before and after the static analysis, including the stress and deformation analysis and comparison of the analytical method validation; Using modal analysis,understood the bridge crane bridge girder deformation of key parts.3. On the ultimate design scheme used in engineering practice, the girder were tested and the experiment, processing, production of the main girder across the upper camber test, bridge diagonal error detection; After the installation of the machine when the load rating of girders under deflection, static load test and dynamic load test.By testing and experiment data validation schemed feasible in engineering practice.In this paper, we studied the retrofit design of the bridge crane service and provided a feasible way, and some academicians had direct production effect.