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首页> 外文期刊>Structural Design of Tall Buildings >Seismic response control of base‐isolated buildings using multiple tuned mass dampers
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Seismic response control of base‐isolated buildings using multiple tuned mass dampers

机译：使用多重调谐质量阻尼器的基础隔震建筑的地震响应控制

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摘要

Seismic response of a base-isolated building equipped with single tuned mass damper (STMD), multiple tuned mass dampers (MTMDs), and distributed multiple tuned mass dampers (d-MTMDs) under real earthquake ground motions is investigated. Numerical study is carried out using analytical models of five-, 10-, and 15-storey base-isolated buildings equipped with the STMD, MTMDs, and d-MTMDs. The buildings are modeled as shear-type structure with a lateral degree of freedom at each floor level, and the buildings are isolated using the laminated rubber bearing, lead-core rubber bearing, friction pendulum system, and resilient-friction base isolator. The coupled differential equation of motion for the buildings are derived and solved in the incremental form using Newmark's step-by-step method of integration. From the numerical study conducted, it is concluded that installing a tuned mass damper at each floor level of a base-isolated building reduces the structural response in terms of top floor acceleration and bearing displacement. It is found that installing the MTMDs and d-MTMDs are significantly beneficial in reducing top floor acceleration as compared with the STMD. Further, almost comparable reduction in the bearing displacement could be obtained by installing the STMD, MTMDs at top, and d-MTMDs in the base-isolated buildings. The d-MTMDs are more beneficial as compared with the STMD and MTMDs as otherwise huge controller mass can now be divided and distributed on different floor levels.
机译：研究了在实际地震地面运动下装有单调谐质量阻尼器（STMD），多调谐质量阻尼器（MTMD）和分布式多调谐质量阻尼器（d-MTMD）的基础隔震建筑物的地震响应。使用装有STMD，MTMD和d-MTMD的5层，10层和15层基础隔离建筑物的分析模型进行了数值研究。建筑物被建模为在每个楼层都具有横向自由度的剪切型结构，并且建筑物使用层压橡胶轴承，铅芯橡胶轴承，摩擦摆系统和弹性摩擦基础隔离器进行隔离。使用Newmark的逐步积分方法，以增量形式导出并求解建筑物的耦合运动方程。从进行的数值研究得出的结论是，在基础隔离的建筑物的每个楼层安装调谐质量阻尼器会降低顶层加速度和轴承位移方面的结构响应。发现与STMD相比，安装MTMD和d-MTMD在降低顶板加速度方面具有显着优势。此外，通过将STMD，顶部的MTMD和d-MTMD安装在基础隔离的建筑物中，可以获得几乎可比的轴承位移减小。与STMD和MTMD相比，d-MTMD更有利，因为现在可以将巨大的控制器重量进行划分并分布在不同的楼层上。

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