[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.12989/sem.2012.41.6.791

Reduction of seismic pounding effects of base-isolated RC highway bridges using MR damper

Sheikh, M.N. (School of Civil, Mining and Environmental Engineering, University of Wollongong)
Xiong, J. (School of Civil, Mining and Environmental Engineering, University of Wollongong)
Li, W.H. (School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong)

Publication Information

Structural Engineering and Mechanics / v.41, no.6, 2012 , pp. 791-803 More about this Journal

Abstract

Significant structural damages due to pounding between adjacent superstructures of multi-span reinforced concrete (RC) highway bridges have been observed in past earthquakes. Different methods have been proposed in the literature to mitigate the adverse seismic pounding effects. This paper presents an analytical investigation on the use of magnetorheological (MR) dampers in reducing seismic pounding effects of base-isolated multi-span RC highway bridges. It has been observed that MR damper can effectively reduce the seismic pounding effect. Three control strategies (passive off, passive on, and bang bang control) of MR damper have been investigated. Although all the control strategies are found to be effective, bang bang control has been observed to be the most effective.

Keywords

MR damper; pounding; highway bridges; control strategies; earthquakes;

Citations & Related Records

Times Cited By Web Of Science : 2 (Related Records In Web of Science)
Times Cited By SCOPUS : 3

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1	Telescopic columns as a new base isolation system for vibration control of high-rise buildings / [Hosseini, Mahmood;Farsangi, Ehsan Noroozinejad;] / Earthquakes and Structures
2	Seismic performance evaluation and retrofitting with viscous fluid dampers of an existing bridge in Istanbul / [Bayramoglu, Guliz;Ozgen, Alpay;Altinok, Enver;] / Structural Engineering and Mechanics
3	Optimum tuned mass damper approaches for adjacent structures / [Nigdeli, Sinan Melih;Bekdas, Gebrail;] / Earthquakes and Structures