Experimental Study on Multiple Tuned Mass Dampers to Reduce Seismic Responses of a Three-Storey Building Structure
In this study, several mass dampers were designed and fabricated to suppress the seismic responses of a 1/4-scale three-storey building structure. The dynamic properties of the dampers and structure were identified from free and forced vibration tests. The building structure with or without the dampers was, respectively, tested on a shake table under the white noise excitation, the scaled 1940 El Centro earthquake and the scaled 1952 Taft earthquake. The dampers were placed on the building floors using the sequential procedure developed by the authors in previous studies. Experimental results indicated that the multiple damper system is substantially superior to a single tuned mass damper in mitigating the floor accelerations even though the multiple dampers are sub-optimal in terms of tuning frequency, damping and placement. These results validated the sequential procedure for placement of the multiple dampers. The structure was also analysed numerically based on the shake table excitation and the identified structure and damper parameters for all test cases. Numerical and experimental results are in good agreement, validating the dynamic properties identified.
G. Chen and J. Wu, "Experimental Study on Multiple Tuned Mass Dampers to Reduce Seismic Responses of a Three-Storey Building Structure," Earthquake Engineering and Structural Dynamics, vol. 32, no. 5, pp. 793-810, John Wiley & Sons, Apr 2003.
The definitive version is available at http://dx.doi.org/10.1002/eqe.249
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Multiple Tuned Mass Dampers; Optimal Placement; Optimum Tuning Frequency; Seismic Performance; Shake Table Test; Buildings; Damping; Earthquake Effects; Structural Analysis; Vibration Measurement; Seismic Prospecting
International Standard Serial Number (ISSN)
Article - Journal
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