摘要
基础隔震是提高结构抗震能力的一种有效措施。近十几年各国学者对此进行了许多研究,已提出一些实用的基础隔震形式。本文对它们的抗震性能进行了总结,同时根据结构动力分析的基本概念,提出了局部隔震结构形式。它由主、附两个结构组成,附属结构设置隔震层,因而它的自重可用来产生摩擦力,消耗地震动传给结构的能量;主体结构不设隔震层,因而它的侧向刚度可限制整个结构产生过大侧向位移。为定量研究此结构形式的抗震性能,本文利用随机振动的离散分析方法计算了它在地震动激励下的随机响应,结果表明它较整体隔震形式具有明显的优越性。
Based on the analysis for the advantages and disadvantages of isolated structures which have been studied for many years to reduce the structural earthquake responses, this paper puts forward a new type of aseismic structural system, i. e. the partially isolated structure. By comparison of the earthquake responses of the ordinary isolated structure and the partially isolated structure,which are obtained by using discrete analysis method of random vibration, it is concluded that the partially isolated structure has better performance under the earthquake excitation. Also,this type of structure can be more easily applied to engineering practice.
出处
《地震工程与工程振动》
CSCD
北大核心
1993年第2期66-74,共9页
Earthquake Engineering and Engineering Dynamics
