This paper focuses on improvement of structural seismic performance under earthquakes of different intensities using a large mass ratio multiple tuned mass damper (LMTMD). A thermal power plant was taken as the example, and the plant was modeled using the finite element software ABAQUS. Coal buckets, which comprised 29.2% of the total mass of the structure, were used as the mass of the LMTMD. Thus, a large mass ratio was easily achieved without adding any extra mass. Incremental dynamic analysis was used to investigate the seismic fragility of the structures, and the seismic performances of the structure equipped with the LMTMD and the original structure were compared. The damping effectiveness and the control reliability of the LMTMD were evaluated. The fragility curves show that under rare earthquakes, the LMTMD reduced the probability of the moderate damage limit state by 43.9%, and under extremely rare earthquakes, the LMTMD exhibited good control robustness and reduced the probability of the severe damage limit state by 25.1%. Furthermore, the LMTMD could control the deformation pattern of the structure and effectively reduced concentrated damage, especially under high‐intensity ground motions; specifically, it reduced the average value of the interstory drift ratio by 1.2%–12% and reduced the standard deviation of the interstory drift ratio by 15%–62%. These results indicate that the LMTMD significantly improved the seismic performance of the structure with satisfactory reliability.

中文翻译：

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装有大质量比多重调谐质量阻尼器的结构的抗震性能

本文重点研究使用大质量比多重调谐质量阻尼器（LMTMD）改善不同强度地震下的结构抗震性能。以火力发电厂为例，并使用有限元软件ABAQUS对发电厂进行建模。占结构总质量29.2％的煤桶用作LMTMD的质量。因此，容易地实现大的质量比而无需增加任何额外的质量。采用增量动力分析方法对结构的抗震性进行了研究，比较了装有LMMTD的结构与原始结构的抗震性能。评估了LMMTD的阻尼效果和控制可靠性。脆性曲线表明，在罕见地震下，LMTMD将中等破坏极限状态的概率降低了43.9％，在极罕见的地震下，LMMTD表现出了良好的控制鲁棒性，并且使严重破坏极限状态的概率降低了25.1％。此外，LMTMD可以控制结构的变形模式并有效减少集中破坏，尤其是在高强度地面运动下；特别是，它使层间漂移率的平均值降低了1.2％–12％，并使层间漂移率的标准偏差降低了15％–62％。这些结果表明，LMMTD以令人满意的可靠性显着改善了结构的抗震性能。LMTMD表现出良好的控制鲁棒性，并将严重损坏极限状态的可能性降低了25.1％。此外，LMTMD可以控制结构的变形模式并有效减少集中破坏，尤其是在高强度地面运动下；特别是，它使层间漂移率的平均值降低了1.2％–12％，并使层间漂移率的标准偏差降低了15％–62％。这些结果表明，LMMTD以令人满意的可靠性显着改善了结构的抗震性能。LMTMD表现出良好的控制鲁棒性，并将严重损坏极限状态的可能性降低了25.1％。此外，LMTMD可以控制结构的变形模式并有效减少集中破坏，尤其是在高强度地面运动下；特别是，它使层间漂移率的平均值降低了1.2％–12％，并使层间漂移率的标准偏差降低了15％–62％。这些结果表明，LMMTD以令人满意的可靠性显着改善了结构的抗震性能。2％–12％，并将层间漂移率的标准偏差降低了15％–62％。这些结果表明，LMMTD以令人满意的可靠性显着改善了结构的抗震性能。2％–12％，并将层间漂移率的标准偏差降低了15％–62％。这些结果表明，LMMTD以令人满意的可靠性显着改善了结构的抗震性能。