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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Semi-active tuned mass damper building systems: Application
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Semi-active tuned mass damper building systems: Application

机译：半主动调谐质量阻尼器建筑系统：应用

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摘要

Seismic performance attributes of multi-story passive and semi-active tuned mass damper (PTMD and SATMD) building systems are investigated for 12-story moment resisting frames modeled as '10+2' stories and '8+4' stories. Segmented upper portion of the stories are isolated as a tuned mass, and a passive viscous damper or semi-active resetable device is adopted as energy dissipation strategy. The semi-active approach uses feedback control to alter or manipulate the reaction forces, effectively re-tuning the system depending on the structural response. Optimum tuned mass damper control parameters and appropriate matching SATMD configurations are adopted from a companion study on a simplified two-degree-of-freedom system. Statistical performance metrics are presented for 30 probabilistically scaled earthquake records from the SAC project. Time history analyses are used to compute response reduction factors across a wide range of seismic hazard intensities. Results show that large SATMD systems can effectively manage seismic response for multi-degree-of freedom systems across a broad range of ground motions in comparison to passive solutions. Specific results include the identification of differences in the mechanisms by which SATMD and PTMD systems remove energy, based on the differences in the devices used. Additionally, variability is seen to be tighter for the SATMD systems across the suites of ground motions used, indicating a more robust control system. While the overall efficacy of the concept is shown the major issues, such as isolation layer displacement, are discussed in detail not available in simplified spectral analyses, providing further insight into the dynamics of these issues for these systems.
机译：针对模型为“ 10 + 2”和“ 8 + 4”的12层抗力矩框架，研究了多层被动和半主动调谐质量阻尼器（PTMD和SATMD）建筑系统的抗震性能属性。故事的分段上部被隔离为一个调谐的质量，并且采用被动式粘性阻尼器或半主动式可重置设备作为能量消散策略。半主动方法使用反馈控制来更改或操纵反作用力，从而根据结构响应有效地重新调整系统。在简化的两自由度系统的伴随研究中，采用了最佳调谐质量阻尼器控制参数和合适的匹配SATMD配置。提供了针对SAC项目中30个概率规模地震记录的统计性能指标。时程分析可用于计算各种地震危险强度范围内的响应减少因子。结果表明，与被动解决方案相比，大型SATMD系统可以在广泛的地面运动中有效地管理多自由度系统的地震响应。具体结果包括基于所使用设备的差异，确定SATMD和PTMD系统去除能量的机制之间的差异。另外，在所使用的一系列地面运动中，SATMD系统的可变性被认为更严格，这表明控制系统更加强大。虽然显示了该概念的整体效果，但对详细问题进行了详细讨论，例如隔离层位移等，这些问题在简化的频谱分析中无法获得，从而为这些系统的动态问题提供了进一步的见识。

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