鋼骨混凝土疊合梁正截面抗彎性能研究
[Abstract]:The steel reinforced concrete structure has the advantages of large stiffness, high bearing capacity and superior seismic performance. These advantages make it the preferred structural form for high-rise, heavy load, long span and towering structures in high intensity fortification areas. In recent years, with the development of the assembly integral building, the steel reinforced concrete composite member emerged as the times require in the construction industry, but there is little research on the composite member at present, which has not yet formed a unified design theory. Therefore, this paper mainly studies the flexural bearing capacity and ductility of this kind of members. In this paper, the flexural bearing capacity of steel reinforced concrete composite beams is calculated by means of plane finite element method, limit equilibrium theory and superposition method, and the results are compared and analyzed. The accuracy, advantages and disadvantages of the three methods are discussed. At the same time, the influence of steel ratio, steel flange size and steel bone position on the bearing capacity of the composite beam is studied. Finally, the section ductility of steel reinforced concrete composite beam is studied by using plane finite element method, and the calculation program of section curvature ductility is compiled, and the main influencing factors and its law of section ductility of the composite beam are discussed. The M- 胃 curves of steel reinforced concrete composite beams and ordinary steel reinforced concrete beams were plotted by using Matlab software, and the curvature ductility coefficients of steel reinforced concrete composite beams were obtained under different conditions. The results show that the ratio and configuration of longitudinal reinforcement, the steel ratio and configuration of steel bone, and the width of flange have great influence on the ductility of steel reinforced concrete composite beams.
【學(xué)位授予單位】:華中科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TU398.9
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