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首页> 外文期刊>Soil Dynamics and Earthquake Engineering >Optimum earthquake-tuned TMDs: Seismic performance and new design concept of balance of split effective modal masses
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Optimum earthquake-tuned TMDs: Seismic performance and new design concept of balance of split effective modal masses

机译：最佳地震调谐TMD：抗震性能和有效模态质量平衡的新设计理念

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The present paper, concerning the performance of optimum TMDs in seismic engineering, is composed of two parts. First, Part I deals with a comprehensive investigation on the effectiveness of an optimum seismic-tuned TMD towards reducing the earthquake response of linear frame structures, which is set up by a dedicated optimisation algorithm, allowing to achieve the best control device for a specific structural system and earthquake event. First, a representative set of 16 primary structures and 18 selected earthquakes has been considered, for a total of 288 cases. Second, additional trials based on a benchmark 10-storey frame and on a codified set of far field earthquakes (FEMA P695 database), composed of 2 x 22=44 records, have been developed, for a further assessment. The presented outcomes provide extensive information about the TMD performance in the seismic engineering scenario, for a-priori known seismic input. Then, Part II reports a comprehensive post-processing and interpretation analysis of the results above. Specifically, connections between seismic TMD performance and modal structural properties are envisaged. Cross -comparisons, presented here through typical sample cases, analyse the changes of the structural characteristics after TMD insertion and monitor the associated effects on the seismic response reduction. The crucial role of achieving a balanced split of effective modal masses on the tuned mode is investigated, and highlighted as an essential ingredient to rely on a high TMD effectiveness in the seismic context. This criterion may be implemented within the tuning process, as a basic true structure-based concept for TMD design in Earthquake Engineering applications, thus for a-priori unknown seismic input.
机译：本文涉及抗震工程中最佳TMD的性能，由两部分组成。首先，第一部分针对优化的地震调谐TMD降低线性框架结构的地震响应的有效性进行了全面研究，这是通过专用的优化算法建立的，从而可以获得针对特定结构的最佳控制装置系统和地震事件。首先，考虑了一组代表性的16个主要结构和18个选定的地震，总共288例。其次，已经开发了基于10层基准框架和一组编纂的由2 x 22 = 44个记录组成的远场地震（FEMA P695数据库）的附加试验，以进行进一步评估。提出的结果为先验已知地震输入提供了有关地震工程场景中TMD性能的大量信息。然后，第二部分报告了上述结果的综合后处理和解释分析。具体地，设想了地震TMD性能与模态结构特性之间的联系。交叉比较是通过典型的示例案例进行的，它分析了TMD插入后结构特征的变化，并监测了对地震响应降低的相关影响。研究了在调谐模式下实现有效模态质量的平衡分配的关键作用，并着重指出了它是在地震环境中依靠高TMD有效性的基本要素。此标准可以在调整过程中实施，作为地震工程应用中TMD设计的基本基于真实结构的概念，从而用于先验未知地震输入。

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