Wind - Induced Vibration Control of Long - Span Bridges by Multiple Tuned Mass Dampers

Yuh-Yi Lin; Chii-Ming Cheng; David Sun

doi:10.6180/jase.2000.3.1.01

Wind - Induced Vibration Control of Long - Span Bridges by Multiple Tuned Mass Dampers

Civil Engineering

Yuh-Yi Lin¹, Chii-Ming Cheng¹ and David Sun¹

¹Department of Civil Engineering Tamkang University, Tamsui, Taiwan 251, R.O.C.

Received: April 28, 2000
Accepted: May 19, 2000
Publication Date: May 19, 2000

Download Citation: ||https://doi.org/10.6180/jase.2000.3.1.01

ABSTRACT

An analytical model is presented to examine the performance of multiple tuned mass dampers (MTMD) for the long span bridges subjected to wind excitation. The reduction of dynamic response and the increase of the flutter velocity by the attachment of the MTMD to the bridge are discussed. Through a parametric analysis, the characteristics of MTMD are studied and the design parameters including mass, damping, bandwidth, and total number of TMDs are proposed. A comparison of effectiveness between a single TMD and MTMD is also presented in this paper. The results indicate that the MTMD, designed with the recommended parameters, is not only more effective but also more robust than the usual single TMD against wind-induced vibration. The superior robustness of the MTMD is especially significant in the torsional direction.

Keywords: Tuned mass damper, Buffeting response, Flutter; Long-span bridge

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