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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Experimental study on multiple tuned mass dampers to reduce seismic responses of a three-storey building structure
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Experimental study on multiple tuned mass dampers to reduce seismic responses of a three-storey building structure

机译：多重调谐质量阻尼器降低三层建筑结构地震响应的实验研究

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摘要

In this study, several mass dampers were designed and fabricated to suppress the seismic responses of a 1/4-scale three-storey building structure. The dynamic properties of the dampers and structure were identified from free and forced vibration tests. The building structure with or without the dampers was, respectively, tested on a shake table under the white noise excitation, the scaled 1940 El Centro earthquake and the scaled 1952 Taft earthquake. The dampers were placed on the building floors using the sequential procedure developed by the authors in previous studies. Experimental results indicated that the multiple damper system is substantially superior to a single tuned mass damper in mitigating the floor accelerations even though the multiple dampers are sub-optimal in terms of tuning frequency, damping and placement. These results validated the sequential procedure for placement of the multiple dampers. The structure was also analysed numerically based on the shake table excitation and the identified structure and damper parameters for all test cases. Numerical and experimental results are in good agreement, validating the dynamic properties identified.
机译：在这项研究中，设计并制造了几种质量阻尼器，以抑制1/4比例三层建筑结构的地震响应。阻尼器和结构的动态特性通过自由振动和强制振动测试确定。带有或不带有阻尼器的建筑结构分别在振动台上在白噪声激励，1940年El Centro规模地震和1952年Taft规模地震下进行了测试。使用作者在先前研究中开发的顺序程序将风门放置在建筑物地板上。实验结果表明，即使在调节频率，阻尼和放置方面，多个阻尼器次优，在减轻地板加速度方面，多重阻尼器系统也明显优于单调谐质量阻尼器。这些结果证实了放置多个阻尼器的顺序程序。还根据振动台激励以及在所有测试案例中确定的结构和阻尼器参数对结构进行了数值分析。数值和实验结果吻合良好，验证了所确定的动态特性。

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