高层悬挂结构体系的减震研究  

Seismic response reduction of high-rise suspended structure

作　　者：麦庆元[1] 

机构地区：[1]广西大学土木工程学院,广西南宁530004

出　　处：《桂林工学院学报》2004年第2期165-167,共3页Journal of Guilin University of Technology

摘　　要：论述了高层悬挂结构体系利用悬挂楼层减小结构地震反应的原理及其减震性能,给出了体系的力学模型和振动方程.通过具体算例,利用数值分析方法对结构体系进行时程分析,探讨了在保持结构楼层总质量不变的情况下,悬挂楼层的质量大小对结构减震效果的影响.计算结果表明,减震效果随悬挂质量的增加而增加,但当悬挂质量占结构总质量的2/3以上时,减震效果增加缓慢.悬挂质量的大小应根据工程的实际情况而定.为获得最佳的减震效果,建议悬挂部分的质量取结构总质量的1/2～2/3.The principle and the performance in structural seismic response reduction of high-rise suspended building using the suspended floors are discussed. The mechanical model and dynamic equation for high-rise suspended building are presented. The time history analysis for structural system is studied by employing the numerical analysis in a concrete example. Moreover, on condition that the total quality of the floors remaining, the effects of structural seismic response reduction and the mass ratio of suspended floors and tube are considered. The calculating results indicate that the performance in seismic response reduction increases along with suspended mass addition, but increases slowly when the suspended mass exceeds 2/3 the whole structure mass. The suspended mass is chosen according to the actual situation in practical engineering. It is suggested that the suspended mass is chosen between 1/2～2/3 of the whole structure mass and the optimal performance in seismic response reduction can be obtained.

关 键 词：悬挂结构 地震反应 减震 

分 类 号：TU351[建筑科学—结构工程]