Research On The Calculation Method Of Steel-Concrete Composite Beam Bridge Design

In order to slip and the shear stress shear analysis of reinforced concrete beams in the common load displacement, internal force and the interface of the composite beam, the numerical simulation analysis was carried out using ANSYS analysis software, the theory of elasticity and finite element based on the basic idea, the steel-concrete composite beam bar system finite element solution, the transverse distribution coefficient of solution are given. The eccentric compression method of steel concrete composite beam bridge the basic calculation formula to calculate the composite beam under vehicle load using existing analytical.Based on the solid element model, established the finite element model of steel-concrete beam by using ANSYS Workbench software, the static response analysis of steel concrete composite beam under vertical load, and the correctness of the finite element model of the existing test data verification, on the basis of the modeling principles, analyzes the relationship between the static response of composite beam and vertical the stud shear loads of different diameter and spacing of steel- concrete composite beam interface connection.The basic idea and the bond slip theory based on structural mechanics, finite element beam element stiffness equation is derived, and the test results and the calculation results were compared with the Workbench, analysis results show that the simulation results and the test results agree well with the numerical finite element calculation results, which can be used in this paper. Finite element formula can more accurate response of composite beam static analysis.In order to calculate the transverse distribution coefficient of steel concrete composite girder bridge, based on the basic idea of the eccentric compression method, established the theoretical calculation formula of composite beam transverse distribution coefficient of the modified eccentric pressure method considering the effect of shear slip, and computing and traditional eccentric pressure method results were compared, results show that the steel concrete composite beam bridge transverse distribution coefficient calculation, not considering the influence of shear slip effect; the use of the formula for practical engineering design results are verified in practical engineering calculation, the composite beam structure is safe, reliable.