摘要
隔震技术通过设置隔震支座,可延长结构自振周期,降低结构所受的地震作用。针对某医疗钢结构建筑,分别采用基于减震系数的分部设计法、直接分析设计法进行隔震设计,通过同时考虑上部结构非线性与隔震支座非线性的动力时程分析,对不同地震水准下隔震结构的抗震性能进行分析评价,同时与抗震结构的抗震性能进行对比。结果表明:采用直接分析设计法设计的隔震结构抗震性能水平高于采用分部设计法设计的隔震结构的抗震性能水平;相比于抗震结构,隔震结构的剪力、上部结构层间位移及楼层加速度均较低,尤其是楼层加速度明显降低,能够保护内部设备不发生倾覆破坏。
Seismic isolation technology can prolong the natural vibration period of the structure and reduce the seismic action of the structure by setting isolation bearings.Aiming at a medical steel structure building,the seismic isolation design was carried out by using the partial design method based on the damping coefficient and the direct analytical design method.The seismic performance of the isolated structure under different seismic levels was analyzed with time history and evaluated by considering both the non-linearity of the superstructure and the non-linearity of the isolation bearing.At the same time,the seismic performance of the isolated structure was compared with the seismic structure.The results show that the seismic performance level of the isolated structure designed by the direct analytical design method is higher than that of the isolated structure designed by the partial design method.Compared with the seismic structure,the shear force of the isolated structure,the inter-story displacement of the upper structure and the floor acceleration are better,especially the floor acceleration is significantly reduced,which can protect the internal equipment from overturning.
作者
付仰强
张同亿
FU Yangqiang;ZHANG Tongyi(China IPPR International Engineering Co.,Ltd.,Beijing 100089,China)
出处
《建筑结构》
CSCD
北大核心
2021年第18期92-97,共6页
Building Structure
关键词
医疗建筑
钢结构
基础隔震
直接分析设计法
分部设计法
抗震性能
medical building
steel structure
base isolation
direct analytical design
partial design method
seismic behavior
