建立了3层异形柱框架结构分析模型,梁端抗弯承载力的计算考虑了楼板翼缘及其钢筋的贡献(T形梁),采用两种不同的侧向荷载分布模式,对不同柱梁抗弯强度比值的异形柱框架结构进行Pushover分析,从顶点位移、层间位移、层位移、结构塑性铰分布等方面对结构抗震性能进行评估,并对其计算结果进行了分析和比较,提出了异形柱框架结构柱-梁抗弯强度比合理取值的建议.%The analysis mould of a three-story structure with special-shaped columns is established. The contributions of the beam from the slab in compression for positive moment and slab reinforcement for negative moment within the effective flange width are taken into account when calculating the beam strengths. In order to analyze the seismic performance of special-shaped column flames with different column-to-beam strength ratios, the pushover analysis with two common load patterns on each model is carried out. The top drift, interstory drifts, the floor displacement and plastic joints distribution are used as measures for structural performance evaluation. On the meantime, the analysis results are analyzed and compared. The valuable suggestion on column-to-beam strength ratio is put forward for the special-shaped column frames.
展开▼
