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논문 기본 정보

자료유형
학술저널
저자정보
Chen, S.R. (Department of Civil and Environmental Engineering, Louisiana State University) Cai, C.S. (Department of Civil and Environmental Engineering, Louisiana State University) Gu, M. (Department of Bridge Engineering, Tongji University) Chang, C.C. (Department of Civil Engineering, Hong Kong University of Science and Technology)
저널정보
테크노프레스 Wind & structures Wind & structures 제6권 제5호
발행연도
2003.1
수록면
387 - 402 (16page)

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In the past decades, much effort has been made towards the study of single-mode-based vibration controls with dynamic energy absorbers such as single or multiple Tuned Mass Dampers(TMDs). With the increase of bridge span length and the tendency of the bridge cross-section being more slender and streamlined, multi-mode coupled vibrations as well as their controls have become very important for large bridges susceptible to strong winds. As a simple but effective device, the TMD system especially the semi-active one has become a promising option for such coupled vibration controls. However, despite various studies of optimal controls of single-mode-based vibrations with TMDs, research on the corresponding controls of the multi-mode coupled vibrations is very rare so far. For the development of a semi-active control strategy to suppress the multi-mode coupled vibrations, a comprehensive parametric analysis on the optimal variables of this control is substantial. In the present study, a multi-mode control strategy named "three-row" TMD system is discussed and the general numerical equations are developed at first. Then a parametric study on the optimal control variables for the "three-row" TMD system is conducted for a prototype Humen Suspension Bridge, through which some useful information and a better understanding of the optimal control variables to suppress the coupled vibrations are obtained. This information lays a foundation for the design of semi-active control.

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