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通过缩尺比为1/5的5个大跨高比配置强格构式型钢混凝土柱和1个实腹式型钢混凝土柱在水平低周反复荷载作用下的试验,获得了各试件发生正截面破坏的荷载-位移滞回曲线;分析了各试件的延性、极限位移角及耗能性能。结果表明,带缀板的强格构式型钢对核心区混凝土有更强的约束作用,所有试件破坏都表现为型钢屈服、混凝土压溃,表现出良好的延性。得出了轴压比、强格构式型钢布置形式对试件抗震性能的影响。
Through the test of 5 long-span ratio high-span concrete girders with 1/5 scale ratio and the strong concrete-filled steel reinforced concrete columns and 1 real belly steel reinforced concrete column under horizontal low-cycle reversed loading, The load-displacement hysteresis curve of the failure of the cross-section was analyzed; the ductility, the limit displacement angle and the energy dissipation performance of each specimen were analyzed. The results show that the strong lattice steel with slab-slab reinforcement has a stronger restraining effect on the concrete in the core area. All the specimens are undergoing yielding failure and the concrete is crushed, showing good ductility. The influence of the axial compression ratio and the strong lattice structure steel arrangement on the seismic performance of the specimens is obtained.