钢筋混凝土异形柱框架结构Pushover分析研究  

Pushover Analysis on Special-shaped Column Frames

作　　者：杜宏彪[1] 管民生[1,2] 

机构地区：[1]广东工业大学建设学院,广东广州510006 [2]华南理工大学建筑学院,广东广州510640

出　　处：《工程抗震与加固改造》2009年第4期13-18,共6页Earthquake Resistant Engineering and Retrofitting

基　　金：广东省教育厅基金项目

摘　　要：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 frames 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.

关 键 词：异形柱 强柱弱梁 PUSHOVER分析 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程] TU312