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该文通过低周反复荷载试验对蜂窝式钢框架抗震性能进行研究。分析其在地震作用下的受力过程、破坏形式、滞回曲线、骨架曲线、刚度退化、延性等抗震性能。分析结果表明:蜂窝框架在地震作用下有较好的抗震能力,结构的破坏特征主要体现在蜂窝梁上;通过腹板开孔削弱可以控制梁端塑性铰形成位置,使得最大塑性区移至梁腹板削弱处,减小了梁柱连接处的转角,能有效的避免梁柱连接焊缝的脆性断裂,提高了钢框架结构的延性。
In this paper, the seismic behavior of honeycomb steel frame is studied by low-cycle cyclic loading test. The seismic process, failure mode, hysteresis curve, skeleton curve, stiffness degradation, ductility and other seismic performance are analyzed. The results show that the honeycomb frame has better seismic performance under earthquake and the damage characteristics of the structure are mainly reflected on the honeycomb beams. The weakening of the web openings can control the formation position of the plastic hinges at the beam ends so that the maximum plasticity zone moves to the beam The weakening of the web reduces the corner of the beam-column connection, effectively avoids the brittle fracture of the beam-column weld, and improves the ductility of the steel frame structure.