基于性能的设计方法在超限高层建筑结构设计中的应用研究

针对超限高层建筑结构抗震设计,提出了基于性能设计方法的性能目标,通过结构在小震、中震、大震作用下的弹性、弹塑性静力和动力时程分析,对三水准地震作用下结构构件进行了承载力定量分析。从理论上证明了结构性能可以达到“小震不坏,中震可修,大震不倒”的抗震设防目标,同时进行了1：20模型的结构振动台试验,确证了实际结构设计的安全性。

Application and research of performance-based design method in tall buildings beyond the Code-Specification

Application of the performance-based design method to the seismic design of a tall building beyond the Code-Specification is presented in this paper.Firstly,the performance objectives of the structure and members are put forward.Secondly,the quantitative evaluation on the bearing capacity of the structure and members are given according to elastic,elastoplastic,dynamic time-history analysis under different level earthquakes.It is proved that the structure performance can fulfill the seismic fortification criterion "no damage under frequent earthquake,repairable under fortified earthquake,no collapse under severe earthquake".At the same time,a 1/20 scale model is tested on shaking table to certify the safety of the structure seismic design.