Finite Element Simulation Analysis Based On The Load Test Of A Simply Supported Hollow Slab Bridge

The number of built Bridges is increasing along with our country socialist modernizationforward and the development of transportation. The safety of the bridge structure has becomeincreasingly prominent. Bridge load test in check the quality of new bridge and evaluate thestructural safety plays a crucial role. In this paper, based on the load test of prestressed concretehollow slab bridge to analysis the influence of the deck pavement andelastic of the laminatedrubber bearing.Now, common method of the plate girder bridges design calculations is the classical theory.But the calculations are based on the different width, section form, transverse connection,calculation of cross section and different assumptions. This way negle cting the influence ofsome factorshas the certain limitation. We can use the finite element method to calculate thebridge structure and analyze the load test data to solve the problem.In this study, a series of finite element simulation analysis and contrastwas carried out onthe load test. To explore the influence of the bridge structure. The affecting factors arethestiffness and spacing of virtual beam, bridge deck pavement and elastic support. The studyfound that the bridge deck pavement showed little effect on the lateral stiffness of the structurebut showed a large a effect on the longitudinal stiffness of the structure and the error ofdeflection is reduced to25%. Elastic support but showed a large a effect on the lateral stiffnessof the structure and the error of the load transverse distribution is reduced to5%.So putforward that we can not consider bridge deck pavement when we design of bridge In the futurein order to increase the safety reserve structure. In the study of internal force of structure anddeflection we need to consider the influence of deck pavement. Elastic support effectivelyimprove the accuracy of simulation and we need to consider in the future when modeling.Summarizes and induces the simulation method of virtual beams and put forward thecalculation method of beam stiffness. I found the model more accurate when the virtual beamspacing from (1/15-2/15) l. Also proved that the classical theory of lateral distributions feasibleand the grillage method is accurate. To provide convenience for accurately evaluate of the bridge load test, serve as a reference for practical engineering application.