Reflection on Analytical Characterisations of TMD Performance using Dynamic Centrifuge Tests
Reflection on Analytical Characterisations of TMD Performance using Dynamic Centrifuge Tests
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使用动态离心机测试对 TMD 性能分析表征的反思
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
S. Madabhushi
中科院分区：
文献类型：
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作者：
R. Jabary;S. Madabhushi
通过土工离心试验，研究了单调谐质量阻尼器（STMD）和多调谐质量阻尼器（MTMD）设置对多自由度土-结构相互作用（SSI）结构地震反应的影响。为了克服MTMD效能数值分析和参数分析的局限性，进行了动态离心试验。结果发现，MTMD配置调谐到一个模式的频率是压倒性的最有效的衰减结构响应。与过去该领域优化研究的结果相反，还发现调谐到多模态频率的多自由度结构中的MTMD配置在阻尼方面始终有效，并且根据所考虑的输入运动，可能会导致结构响应的显着衰减，超出了使用替代STMD和MTMD配置所能实现的效果。
A series of geotechnical centrifuge tests was conducted to investigate single tuned mass damper (STMD) and multiple tuned mass damper (MTMD) positioning effects on the seismic response of a multiple-degrees-of-freedom structure undergoing soil-structure interaction (SSI). The dynamic centrifuge tests were conducted to overcome the limitations of numerical and parametric analyses on MTMD effectiveness. It was found that a MTMD configuration tuned to one mode frequency is overwhelmingly the most effective in attenuating structural response. Contrary to findings from past optimisation studies in the field, a MTMD configuration in a MDOF structure tuned to multiple mode frequencies was also found to be consistently effective in damping and, depending on the input motion considered, could lead to significant attenuation of structural response beyond what could be achieved with the use of alternative STMD and MTMD configurations.