摘要
MTMD比TMD具有明显高的鲁棒性。然而,MTMD中各质量块位移不同,总的来说,呈递增或递减趋势,因而各质量块的有效性未得以充分发挥。再者,MTMD比TMD复杂,因而其造价比TMD高。鉴于此,本文提出一种新控制策略——双重调谐质量阻尼器(DTMD)。基于定义的二类最优化目标函数,评价了双重调谐质量阻尼器(DTMD)的控制性能。数值结果表明,利用第二类设计准则(新准则)设计的双重调谐质量阻尼器(DTMD)与由5个TMD组成的MTMD具有近似相同的有效性和鲁棒性。因此,双重调谐质量阻尼器是一种先进的控制策略。
The displacement of every mass block in the MTMD is different, and generally assumes either a increasing or decreasing trend, which implies that the maximum effect of every mass block cannot be achieved. Further more, the MTMD is more complex and costly than TMD. In view of this, a new control strategy in double tuned mass dampers (DTMD) is for the first time, proposed to attenuate the undesirable oscillations of structures under ground acceleration. Based on two objective functions for optimization, parametric studies are performed to assess the control performance of the DTMD. The results indicate that the DTMD can render better effectiveness and robustness than the TMD. More importantly, the DTMD designed using the new design criterion practically provides the same effectiveness and robustness as the MTMD composed of 5 TMDs. This proves that the DTMD is an advanced control strategy.
出处
《土木工程学报》
EI
CSCD
北大核心
2005年第5期1-9,共9页
China Civil Engineering Journal
