OPTIMUM RESPONSE CONTROL OF MULTI-DEGREE-OF-FREEDOM SEISMIC CONTROL SYSTEM INCORPORATED WITH CONCENTRATEDLY ARRENGED TUNED VISCOUS MASS DAMPERS
OPTIMUM RESPONSE CONTROL OF MULTI-DEGREE-OF-FREEDOM SEISMIC CONTROL SYSTEM INCORPORATED WITH CONCENTRATEDLY ARRENGED TUNED VISCOUS MASS DAMPERS
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DOI：
10.3130/aijs.80.1393
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发表时间：
2015
影响因子：
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通讯作者：
T. Shinjo;M. Ikenaga;K. Ikago;N. Inoue
中科院分区：
文献类型：
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作者：
T. Shinjo;M. Ikenaga;K. Ikago;N. Inoue
调谐质量阻尼器类系统可以通过布置两节点机械质量装置（称为惯性体或动态质量）来构造，该两节点机械质量装置产生与其两个节点之间的相对加速度成比例的惯性阻力，其中粘性元件并联并且弹簧元件串联布置。本系统被称为调谐粘滞质量阻尼器（TVMD）地震控制系统。当TVMD被并入到受到强地面运动的建筑结构中时，与附加系统共振的层间运动的分量导致粘性元件中的放大运动和大量能量耗散。对于多自由度系统，若阻尼器的表观质量分布与主刚度成正比，则利用不受控系统的基本模态，通过等效单自由度降阶得到了最优设计的闭合形式。然而，最优设计并不适用于附加质量分布与主刚度分布不成比例的系统。因此，本文的主要目的是讨论具有非比例分布TVMD的多自由度地震控制系统的最优控制方法和特性。
A tuned mass damper-like system can be constructed by arranging a two-node mechanical mass device, referred to as an inerter or a dynamic mass, that generates inertial resistance forces proportional to the relative accelerations between its two nodes with a viscous element in parallel and spring element in series arrangement. The present system is referred to as the tuned viscous mass damper (TVMD) seismic control system. When TVMDs are incorporated into a building structure subjected to strong ground motions, components of the inter-story motions resonant to the additional system result in amplified motions and substantial energy dissipation in the viscous element. For a multi-degree-of-freedom (MDOF) system a closed form optimum design is obtained from equivalent single-degree-of-freedom reduction using the fundamental mode of an uncontrolled system if the apparent mass distribution of the dampers is proportional to that of the primary stiffnesses. The optimum design, however, does not apply to a system in which the distribution of the supplemental masses is non-proportional to that of the primary stiffnesses. Thus, the main objective of this paper is to discuss the optimum control method and characteristics of an MDOF seismic control system having non-proportionally distributed TVMDs.