New approach in design of seismic isolated buildings applying clusters of rubber bearings in isolation systems
New approach in design of seismic isolated buildings applying clusters of rubber bearings in isolation systems
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DOI：
10.12989/eas.2013.4.6.587
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发表时间：
2013-06
影响因子：
1.5
通讯作者：
M. Melkumyan
中科院分区：
文献类型：
--
作者：
M. Melkumyan
本文提出了一种基础隔震建筑隔震体系设计的新方法。其思想是在柱和/或剪力墙下安装一个大尺寸的橡胶支座，或者在承重墙下以一定的间距一个接一个地安装，而是安装一组/一簇小尺寸的支座，以增加隔震系统的整体有效性。列举了这种方法的优点，并通过实例加以说明。此外，一些建筑物的分析结果的方法安装的橡胶支座的集群被用于其隔震系统中给出了两种情况下：i）当进行分析的基础上的亚美尼亚地震规范的规定，和ii）当进行时程分析。所得结果进行了比较和讨论。论文还介绍了，作为一个例子，详细的分析和设计的18层独特的建筑在埃里温的住宅综合体之一。对该建筑进行了基础隔震和基础固定两种情况下的地震反应分析。在分析中使用了几个时间历程。所获得的结果的比较表明，所提出的隔震系统的结构概念的高效率和需要进一步改进的抗震规范规定的折减系数的值。本文中的一个单独部分专门介绍了高阻尼叠层橡胶-钢支座的设计及其试验结果。
The given paper presents a new approach in design of seismic isolation systems of base isolated buildings. The idea is to install not one big size rubber bearing under the columns and/or shear walls, or one by one with certain spacing under the load-bearing walls, but to install a group/cluster of small size bearings, in order to increase the overall effectiveness of the isolation system. The advantages of this approach are listed and illustrated by the examples. Also the results of analyses of some buildings where the approach on installation of clusters of rubber bearings was used in their isolation systems are given for two cases: i) when the analyses are carried out based on the provisions of the Armenian Seismic Code, and ii) when the time history analyses are carried out. Obtained results are compared and discussed. Paper also presents, as an example, detailed analysis and design of the 18-story unique building in one of the residential complexes in Yerevan. Earthquake response analyses of this building were carried out in two versions, i.e. when the building is base isolated and when it is fixed base. Several time histories were used in the analyses. Comparison of the obtained results indicates the high effectiveness of the proposed structural concepts of isolation systems and the need for further improvement of the Seismic Code provisions regarding the values of the reduction factors. A separate section in the paper dedicated to the design of high damping laminated rubber-steel bearings and to results of their tests.