【摘要】 为研究型钢混凝土十字形异形柱的抗震性能,完成4个不同轴压比、配钢率、加载方向试件的低周反复荷载试验。对不同设计参数试件的破坏形态、滞回性能、骨架曲线、变形能力、耗能能力进行分析。根据试验结果,采用ABAQUS对试件进行有限元分析,分析得到的试件的破坏形态、骨架曲线及承载力与试验结果总体上吻合较好。试验及有限元分析结果表明:型钢混凝土十字形异形柱具有良好的延性、塑性变形能力和耗能能力。与钢筋混凝土十字形异形柱相比,型钢混凝土十字形异形柱承载力高、抗震性能好,可适用于高层建筑以及抗震设防烈度较高地区的建筑中。更多还原

【Abstract】 To study the seismic behavior of steel reinforced concrete cross-shaped columns, four specimens under constant axial load and cyclic lateral load were tested, and the effects of the axial compression ratio, the steel ratio and the loading direction on the failure modes, hysteretic behavior, deformation capacity and energy dissipation capacity of the specimens were analyzed. Based on the experimental results, a finite element analysis was carried out to simulate the behavior of the specimens, and the numerical results agreed well with the experimental results. The results show that steel reinforced concrete cross-shaped columns have favorable ductility, plastic deformation capacity and energy dissipation capacity. Compared with reinforced concrete cross-shaped columns, the steel reinforced concrete cross-shaped columns have higher bearing capacity and excellent seismic behavior, which can be used in high-rise buildings and the construction in high seismic fortification zone.更多还原