倒塌分析在某500m级超高层建筑抗震设计中的应用

Application of collapse analysis in seismic design of a super-tall building over 500m

近年来我国超高层建筑发展迅速,其抗震安全性受到广泛重视。基于弹塑性计算的倒塌分析是研究结构抗震安全的重要手段,并已在常规结构设计中得到大量应用,但是在超高层建筑中此类研究还很少。因此,结合某500 m级超高层建筑抗震设计实例,采用倒塌分析对其抗震设计方法及改进措施进行了系统的研究,研究工作涵盖工程设计的主要过程,从结构体系到设计参数,再到具体构件的设计方案。研究工作表明,倒塌分析可以帮助改进结构抗震设计,提高抗震性能,同时控制工程造价。研究可为类似超高层建筑抗震设计提供参考。

In recent decade super-tall buildings develop quickly in China,and the seismic safety is attached great importance. Collapse analysis based on elasto-plastic calculation is an important method to study the structural seismic safety,which is widely used in the regular structural designs. However,the application of this method in super-tall buildings is rare. Hence,based on the seismic design of a super-tall building over 500 m,collapse analysis was adopted to investigate the seismic design method and the improvement measures systematically. The major processes during the engineering design were covered,including the structural system,design parameters and design schemes of specific members. The research results show that collapse analysis can help improve the structural seismic design,enhance the seismic performance and control the construction cost. The research can provide reference for seismic design of similar super-tall buildings.