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Seismic control of super high-rise structures with double-layer tuned particle damper

机译：双层调谐粒子阻尼器超高层结构的地震控制

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摘要

Energy dissipation is an important method for improving the seismic performance of super high-rise (SHR) structures. However, few quantitative studies have focused on new energy dissipation methods and their application in SHR structures, especially for those under long-period ground motion, including near-fault pulse-type (NFPT) ground motion. Thus, in this study, a 1/20-scale model of a typical SHR structure was designed and manufactured, and various earthquake waves were selected based on the site condition of the structure, such as non-long-period (NLP) ground motion, non-pulse-like long-period (NPLP) ground motion, and NFPT ground motion. Then, a double-layer tuned particle damper (DTPD) was fabricated, its parameters were optimized, and a design method was proposed. Finally, a series of shaking table tests were performed on the scaled model with and without DTPD. The results indicated that the dynamic responses were much greater under NPLP and NFPT than under NLP ground motion. The dynamic responses of the SHR structure were more evident when the value of velocity pulse period was close to that of the natural vibration period of the SHR structure. Moreover, the top floor of the SHR structure clearly exhibited whipcord phenomenon under NPLP and NFPT ground motions. DTPD can effectively decrease the dynamic response of SHRs. The damping performance of the DTPD under NPLP and NFPT was better than that under NLP ground motion. In addition, a smaller damping ratio at the connection between the DTPD and the structure induced a better damping performance from the DTPD.
机译：能量耗散是提高超高层（SHR）结构的地震性能的重要方法。然而，很少有量化研究专注于新的能量耗散方法及其在SHR结构中的应用，特别是对于长期地面运动下的那些，包括近故障脉冲型（NFPT）地运动。因此，在该研究中，设计和制造了一种典型的SHR结构的1/20级模型，并且基于结构的现场条件选择各种地震波，例如非长期（NLP）地面运动，非脉冲状的长期（NPLP）地面运动和NFPT地面运动。然后，制造了双层调谐粒子阻尼器（DTPD），优化了其参数，提出了一种设计方法。最后，在具有和不具有DTPD的缩放模型上执行一系列摇动台测试。结果表明，在NPLP和NFPT下，动态响应比NLP接地运动在NFPT下。当速度脉冲周期的值接近SHR结构的自然振动周期的时，SHR结构的动态响应更明显。此外，SHR结构的顶层清楚地表现出NPLP和NFPT地面运动下的Whipcord现象。 DTPD可以有效地降低SHRS的动态响应。 NPLP和NFPT下DTPD的阻尼性能优于NLP地面运动下的DTPD。另外，DTPD与结构之间的连接处的较小阻尼比率诱导来自DTPD的更好的阻尼性能。

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