摘要
厚层橡胶支座的隔振性能较好,广泛应用于地铁周边建筑物的基底隔振。但厚层橡胶支座的抗震性能如何,还有待进一步的研究。以两跨十五层框架结构为基本模型,采用弹性时程分析方法分别计算并对比了在地震动激励下,布置厚层橡胶支座、布置普通橡胶支座和无支座三种情况时该结构的基底剪力和层间位移角。得出了厚层橡胶支座能够满足规范规定的抗震要求,其抗震性能比无支座要好,比普通橡胶支座略差,竖向刚度较小导致上部结构发生摇摆效应是其抗震性能比普通橡胶支座略差的原因。
Thick rubber bearing is an efficient isolation vibration device,and it is widely used in the building base iso-lation vibration around the subway. It still needs further research about the anti-scismic property. Based on the frame structure of the two-span 15-story building, the method of clastic time history analysis was adopted to calculate and compare the base shear and the relative story displacement angle of this structure when arranging the thick rubber bear-ing, arranging common bearing and not having bearing underlying the earthquake motion excitation. In conclusion, the thick bearing can meet the requirements of the seismic norm,the seismic property is better than that of no bearing and it is slightly worse than that of the average bearing,the reason of which is that the vertical stiffness leads to the rocking effect of the superstructure.
出处
《建材世界》
2017年第2期96-99,共4页
The World of Building Materials
基金
中央高校基本科研业务费资助(2017-zy-062)
关键词
厚层橡胶支座
基底剪力
层间位移角
竖向刚度
thick rubber bearing
base shear
interlayer displacement angle
vertical stiffness
