【摘要】 针对提出的串并联调谐质量阻尼器（TTMD）减震系统，采用粒子群算法，在频域内对多自由度结构-TTMD系统进行优化分析。建立多自由度结构-TTMD系统减震控制仿真分析模型，分别考虑不同类型实际地震记录，在时域内研究了TTMD对结构地震响应的控制效率，并与相同总质量比的调谐质量阻尼器（TMD）进行比较。进一步考虑了结构刚度发生10%和30%退化的情况，分析了TTMD系统对刚度退化结构的减震效果。数值结果表明，TTMD系统减震性能和鲁棒性能优于TMD系统，且具有阻尼需求小、安装简单、易于实现等优势，是一种增强型减震系统。更多还原

【Abstract】 Directed at the proposed earthquake reduction system, named the tuned tandem mass dampers(TTMD), the optimized analysis of the multi-degree-of-freedom(MDOF) structure-TTMD system has been investigated in frequency domain by the particle swarm optimization. The seismic simulation of the MDOF structure-TTMD system has been established under earthquakes.Considering different types of seismic records, the control efficiency of TTMD for the structural seismic responses was analyzed in the time domain and compared to that of the tuned mass damper(TMD) with the equal total mass ratio. Further taking into account the structural stiffness of the-10% and-30% degradations, the earthquake reduction behaviors of TTMD were scrutinized for the seismic responses of the structure with the stiffness degradation. It is found in terms of numerical results that the TTMD outperforms the TMD in seismic performance and robustness. Likewise, the TTMD has a drastically reduced damping demand, thus being an enhanced earthquake reduction system.更多还原