MTMD控制结构地震反应的特性研究
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摘要
本文对拥有多个调谐质量阻尼（MTMD）的建筑结构在简谐地震作用下的特性进行研究，并将MTMD与TMD进行比较。建筑结构假设为单自由度：MTMD中的n个TMD相互并联，并具有相同质量和阻尼系数，并假设具有等频率分布。分析可得，在已知质量系数的前提下，MTMD系统中MTMD的频率范围、阻尼系数和TMD的数量是MTMD系统的主要参数，它们对建筑结构的响应起主要作用，而且这些参数存在优化问题。优化MTMD对建筑结构的振动控制要比优化TMD更为有效。
This paper is concemed with the dynamic behavior of building structures consisting of multiple tuned mass dampers (MTMD) under harmonic excitation. Comparison is made between MTMD and tuned mass damper (TMD). The structure is modeled as a single degree -of-freedom system. MTMD are joined in parallel and each TMD has the same mass and damping ratio. The natural frequencies of MTMD are assumed to be equally distribued. It is found that the frequency range, the damping ratio and the total number of tuned mass dampers are dominant parmeters of the system for a given mass ratio . Therefore , it is necessary to optimize these parameters. In addition , the optimization of MTMD is found more effective than the optimization of a single TMD in structural vibration control .
This paper is concemed with the dynamic behavior of building structures consisting of multiple tuned mass dampers (MTMD) under harmonic excitation. Comparison is made between MTMD and tuned mass damper (TMD). The structure is modeled as a single degree -of-freedom system. MTMD are joined in parallel and each TMD has the same mass and damping ratio. The natural frequencies of MTMD are assumed to be equally distribued. It is found that the frequency range, the damping ratio and the total number of tuned mass dampers are dominant parmeters of the system for a given mass ratio . Therefore , it is necessary to optimize these parameters. In addition , the optimization of MTMD is found more effective than the optimization of a single TMD in structural vibration control .
引文
[1] K Iwanami and K Seto ,Optimal design of dual tuned mass dampers and their effectiveness[J] ,Proc .JSME(C), 1984, 50(449): 44-52 (in Japanese ).
[2] T Igusa and K Xu- Wide band-response characteristics of multiple subsystems with high modal densityy [C]Proc . 2nd int. Conf Stochastic Struct Dyn, 1990; Florida , U.S.A
[3] T Igusa and K Xu. Vibration reduction characteristics of distributed tuned mass dampers [C]. Proc. 4th int.Conf .Struct Dyn : recent advances , 1991. 596-605.
[4] Y Fujino, et al. A simulation study on effectiveness of multiple TMD and multiple TLD [j]. J. Struct Eng 1992. 38A: 825-836 (in Japanese).
[2] T Igusa and K Xu- Wide band-response characteristics of multiple subsystems with high modal densityy [C]Proc . 2nd int. Conf Stochastic Struct Dyn, 1990; Florida , U.S.A
[3] T Igusa and K Xu. Vibration reduction characteristics of distributed tuned mass dampers [C]. Proc. 4th int.Conf .Struct Dyn : recent advances , 1991. 596-605.
[4] Y Fujino, et al. A simulation study on effectiveness of multiple TMD and multiple TLD [j]. J. Struct Eng 1992. 38A: 825-836 (in Japanese).
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