In order to study the the mechanical behavior and the loading capacity of this special structure under different combined actions of load ,in this paper, the three-dimensional plate-shell element model was constructed...
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In order to study the the mechanical behavior and the loading capacity of this special structure under different combined actions of load ,in this paper, the three-dimensional plate-shell element model was constructed by the finite element procedure ANSYS, and one segment of composite box beam's special shape intersection of Beijing South Station Viaduct in positive bending region was analyzed. The mechanical behavior of the steel box-concrete composite beam at intersection was analyzed, such as the stress and deformation behavior of the composite beam under different combined actions of loads, the loading of the special shape intersection under the interaction of vertical bending and torsion and the bearing reaction under live load. Finally by the parametric analysis to the thickness of the steel girder web, the ratio of bending and torison stiffness, and the diaphragm, the influence of the parametric on the special girder was understanded clearly.
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