摘要
钢筋混凝土框架-剪力墙结构的理想破坏模式为连梁—剪力墙底部—框架梁—框架柱。将附加4片剪力墙和M榀框架的12、14、16、18、20层结构作为N层4片剪力墙M榀框架算例模型,利用SNAP软件对其依次进行弹塑性动力时程分析,考查随M的增加,N层4片剪力墙M榀框架的破坏模式的变化过程,根据结构的累积滞回耗能分布规律,分析并确定其刚度特征值λ和破坏模式的内在联系,提出满足理想破坏模式要求的临界刚度特征值,从而根据临界刚度特征值计算结构的相对剪力墙刚度。对临界刚度特征值的N层4片剪力墙M榀框架进行分析可知,其周期、壁率、面积率、位移角、受力及其变形特征均符合经验公式和《高规》等要求,表明研究方法的正确性和研究结果的合理性。
The ideal failure mode of a reinforced concrete frame-shear wall structure is failure starting from coupling beams to the bottom of shear wall, then from frame beams to frame columns. Here, structures composed of four shear walls and M specimens of the framework with 12, 14,16,18,20 layers were used as examples for a model of N-storey and 4- shear wall and M- framework. Then, structures were designed and analyzed using the elastic-plastic dynamic time history analysis method with SNAP software. With increase in M, the changes of structures＇ failure mode were investigated. Based on the distribution of cumulative hysteretic energy （ EH） , the relationship between the stiffness characteristic value and the best failure mode was analyzed and determined, and the critical stiffness characteristic values meeting the ideal failure mode requirements were proposed, then the relative shear wall stiffness was computed according to the critical stiffness characteristic value. The analysis of the model of N-storey and 4-shear wall and M- framework which the critical stiffness characteristic value showed that its wall length of a unit area, area ratio, period, the inter-story displacement angle, force and deformation characteristics meet the requirements of ＂Technical specification for concrete structures of tall building＂ and empirical formulas, so the study method is correct and the results are reasonable.
出处
《振动与冲击》
EI
CSCD
北大核心
2013年第20期165-171,共7页
Journal of Vibration and Shock
基金
江苏科技大学人才资助项目(2006CH069J)
镇江市社会发展指导项目(2008CH072J)
关键词
N层4片剪力墙M榀框架
累积滞回耗能
破坏模式
临界刚度特征值
N-storey and 4-shear wall and M- framework
cumulative hysteretic energy
failure mode
criticalstiffness characteristic values
