高层建筑顶部塔形网架的设计与抗震分析

Earthquake Resistant Analysis and Design of Space Truss Tower on Top of Highrise Building

本文结合一工程实例，对位于高层建筑顶部的塔形网架的设计与地震反应进行了分析。在按照简化方法［１］进行抗震设计后，应用时程分析法和振型分解反应谱法进行了抗震验算，验证了该简化方法的安全性。讨论了塔形网架的自振特性和抗震性能，并得出了一些有益的结论。

The design and earthquake response of space truss tower as an engineering project lying on the top of a highrise building is analyzed in this paper. The seismic design of the structure is carried out by a simplified method and the safety of the design is checked by use of the time history method and the mode analysis response spectrum method. Some dynamic properties and earthquake resistant characteristics are discussed as well. Furthermore ,some conclusions are drawn and several design suggestions are put forward.