Steel And Concrete Plate Girder Composite Structure Research Of Shear Study

Composite structures of steel and concrete composite beams in one of the most widelyused structure form, high construction speed, high bearing capacity, suitable for large load,the characteristics of large span. Finite element analysis on seismic fortification, there is a lotof plastic deformation and energy dissipation capacity, its ductility compared with reinforcedconcrete structure is much greater. Force advantages embodied in the combination of steeland concrete composite beams, composite effect size is determined by the key components,shear connectors in composite beams.Shear connectors in composite structure, working condition in the bending, shear andtension by waves. All sides of it may be under pressure, may also be local compression.Reinforcement in the concrete flange of shear connectors work may also be affected. Becauseof the complexity of the fitting on the mechanical behavior, study the stress distribution anddeformation of the shear connector connection parts of the law, form and fatigue life of steel-concrete composite structure and connection of the department of mechanical properties is ofgreat significance.Through engineering examples, this paper established the whole bridge single across thewhole finite element model study the connection of stress and strain. And the calculated dataas a result, the connection of destruction rules were summarized. Finally, the connection offatigue life assessment. The main content of research includes the following aspects:(1) The introduction of steel-concrete composite structure and the development historyand characteristics of shear connectors, summary of steel-concrete composite structures athome and abroad and the present situation of research and application of the shear connector.(2) Class in the Yellow River hydropower station into the factory more traffic bridge asthe engineering background, and the finite element analysis theory, determine a reasonablebridge structure parameters. Class more solid bridge finite element model is established andthe Yellow River hydropower station traffic bridge structure stress analysis into the factory.(3) In the whole structure, based on the analysis of the connection node local finiteelement model is established. To load the most unfavorable load condition, the calculationanalysis of stress and strain distribution of the local structure.(4)Simulation test data for local node model, through the statistics class than on the testdata, sums up the connection of the destruction of the structure form.(5) Using the MIDAS FEA fatigue analysis of the function, determine the reasonablestructure parameters and load spectrum, fatigue analysis was carried out on the local structure.