钢筋混凝土框架核心筒结构地震韧性评价

随着中国高层建筑的蓬勃发展,“大震不倒”的性能目标已经不能满足现代社会的需求,提高其地震韧性是当下高层建筑抗震的发展趋势.对比目前代表性的韧性计算方法,构建了一种基于构件损伤状态的结构使用功能量化方法,提出了结构地震韧性的评价流程,并应用于典型钢筋混凝土框架核心筒高层建筑结构的地震韧性评价.研究结果表明:所提出的基于构...

Seismic resilience evaluation of reinforced concrete frame core tube structure

With the boom of high-rise buildings in China, the performance goal of “collapse not occur under rare earthquake” can no longer meet the needs of modern society. Seismic resilience becomes the trend of high-rise buildings. The representative seismic resilience quantification methods were compared and a new method based on component damage states was put forward to reflect the structural functionality. Then a quantification method of seismic resilience was suggested. Finally, the proposed quantification method was applied to evaluate the seismic resilience of a typical reinforced concrete frame core tube high-rise building. The results indicate that the functionality quantification method based on component damage states can well reflect the structural functionality under different seismic hazards. The studied reinforced concrete frame core tube structure has great seismic resilience and the resilience indexes under frequent earthquake, design earthquake and rare earthquake are 99.95%, 98.68% and 88.69%, respectively. The influence of nonstructural components on seismic resilience is greater than that of structural components under the frequent earthquake and design earthquake.