摘要
以某超高层巨型框筒+核心筒结构为例,分别采用两种不同的剪力墙内支撑布置方案,通过基本动力特性分析、大震弹塑性分析和抗倒塌能力分析,比较了剪力墙内支撑布置对超高层建筑结构抗震性能的影响。研究表明,剪力墙内支撑对结构大震下的位移响应有一定的积极影响,能够显著提高结构的抗倒塌安全储备。建议超高层建筑结构设计时进行抗倒塌分析,对易倒塌层墙体进行内支撑加强,以提高抗倒塌安全储备。
A super-tall building with mega framed-tube and corewall was taken as an example. Two different schemes of embedded brace in shear wall were adopted. The influence of the embedded brace in shear wall on the seismic performance of super-tall buildings was compared through the analysis of basic dynamic characteristics,the elasto-plastic analysis under the rare earthquake and the collapse capability analysis. The research shows that the embedded brace in shear wall has a positive effect on the displacement response of the structure under the rare earthquake,and can significantly improve the structure＇s safety reserve for collapse resistance. It is suggested that in the structural design of super-tall buildings,the collapse analysis should be carried out and the embedded brace should be set in shear wall of weak layers in order to improve the safety reserve of collapse resistance.
出处
《建筑结构》
CSCD
北大核心
2016年第3期1-5,共5页
Building Structure
基金
国家自然科学基金(51222804
91315301
51261120377)
北京市自然科学基金(8142024)
关键词
超高层建筑
剪力墙内支撑
弹塑性分析
抗倒塌分析
抗倒塌安全储备
super-tall building
embedded brace in shear wall
elasto-plastic analysis
collapse analysis
safety reserve for collapse resistance
