This paper proposes a novel high performance hybrid passive base-isolated system integrating the base-isolated system (BIS) with the tuned tandem mass damper inerters (TTMDI), referred to as the BIS+TTMDI. To reveal the interaction between two components and their integrated control performance, the proposed configuration is modeled by a simplified four degree-of-freedom model together taking the dynamic characteristics of the isolation system, TTMDI, and superstructure into inclusion. Employing the optimization criterion defined as minimization of the dimensionless variance of superstructure displacement relative to the ground and by resorting to the particle swarm optimization, the system parameters of TTMDI are tuned to get their best integrated control performance. Evaluations are in turn unfolded on the performance taking into diverse TTMDI inertial properties and different isolation layer characteristics account and robustness, to fully explore the effectiveness of reducing both the displacement and acceleration for the isolation layer and superstructure, the TTMDI's energy dissipation mechanism and capacity, evolution of stiffness and damping, stroke, and structural frequency response. Subsequently, the findings of the BIS+TTMDI in the frequency domain is further tested via the time history analyses using the real records including both near-field with pulse and far-field earthquakes. In two analysis domains, the integrated performance of the proposed BIS+TTMDI is compared not only to the BIS but also to the BIS+TMDI, as well as to the BIS+TTMD and BIS+TMD. Results confirm that the BIS+TTMDI is a high performance system, namely, with high control effectiveness, high robustness, highly smaller stroke, and drastically reduced damping demand.

中文翻译：

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一种高性能混合无源基极隔离系统

本文提出了一种新型高性能混合被动基础隔震系统，将基础隔震系统（BIS）与调谐串联质量阻尼器（TTMDI）相结合，称为BIS+TTMDI。为了揭示两个组件之间的相互作用及其综合控制性能，所提出的配置通过简化的四自由度模型建模，同时将隔离系统、TTMDI 和上层建筑的动态特性纳入其中。采用优化准则定义为上层建筑位移相对于地面的无量纲方差最小化，并通过粒子群优化，调整 TTMDI 的系统参数以获得最佳的综合控制性能。进而对TTMDI的不同惯性特性和不同隔离层特性考虑和鲁棒性的性能进行评估，以充分探索减少隔离层和上部结构的位移和加速度的有效性，TTMDI的能量耗散机制和能力，刚度和阻尼、冲程和结构频率响应的演变。随后，通过使用包括近场脉冲和远场地震在内的真实记录的时程分析，进一步测试了 BIS+TTMDI 在频域中的发现。在两个分析域中，提出的 BIS+TTMDI 的综合性能不仅与 BIS 进行了比较，还与 BIS+TMDI 以及 BIS+TTMD 和 BIS+TMD 进行了比较。