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采用均布和倒三角两种不同的侧向荷载分布模式,以顶点位移、层间位移、结构塑性铰分布等作为性能评估的参数,对不同柱-梁抗弯强度比值的矩形柱框架结构进行抗震性能分析,并对其计算结果进行了分析和比较。研究发现,考虑到楼板翼缘及其钢筋对梁端抗弯承载力的贡献,要保证强柱弱梁的实现,矩形柱框架结构柱-梁抗弯强度比值应不小于2.0。
Two different lateral load distribution modes, uniform distribution and inverted triangle, were used to evaluate the performance of the rectangular column-frame structure with different column-beam bending strength ratios based on the parameters of apex displacement, interlayer displacement and plastic hinge distribution. Analysis, and its calculation results were analyzed and compared. The results show that, considering the contribution of slab flange and its reinforcement to the flexural capacity of beam, the ratio of column-beam flexural strength of rectangular column frame structure should be not less than 2.0 to ensure the realization of strong column and weak beam.