Seismic response control of steel benchmark building with a tuned mass damper
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The effectiveness of a tuned mass damper (TMD) in dynamic vibration mitigation of a 20-storey steel benchmark structure (SBB) under real earthquake ground motions is presented. To study the positioning and tuning effect, a TMD is positioned at the largest or relatively larger of the normalized amplitude of mode shape of the selected structure. At each location, a TMD is tuned with different modal frequencies, while mitigating first five modal responses. The response of the SBB equipped with a TMD is obtained by numerically solving the differential equations of motion under different earthquakes, and subsequently compared with the corresponding uncontrolled building (NC), in order to investigate the efficiency of a TMD in seismic response control of buildings. Parameters considered for this study to be varied are (1) placement, (2) tuning frequency, and (3) mass ratio. The changes in the performance criteria (response) under various seismic excitations are calculated to evaluate the effectiveness of a TMD tuned to various modal frequencies, which are placed at different locations. It is noticed that the TMD tuned to the fundamental modal frequency and placed at the topmost floor leads to the best performance under earthquakes. It is also observed that controlling the higher modal response by a TMD will be efficient to substantially mitigate the seismic response of the SBB.
KeywordsBenchmark building Modal frequency/shape Seismic Tuned mass damper
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Conflict of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
- Bhandari, M., Bharti, S., Shrimali, M. K., & Datta, T. K. (2019). Seismic fragility analysis of base-isolated building frame excited by near and far field earthquakes. Journal of Performance of Constructed Facilities (ASCE), 33(3), 1–16.Google Scholar
- Elias, S., & Matsagar, V. (2015). Optimum tuned mass damper for wind and earthquake response control of high-rise building. In V. Matsagar (Ed.), Advances in structural engineering (Vol. 2, pp. 1475–1487). India: Springer. (ISBN: 978-8-13-222192-0 (Print), 978-8-13-222193-7 (Online)) Google Scholar
- Elias, S., & Matsagar, V. (2018b). Wind response control of tall buildings with flexible foundation using tuned mass dampers. In Wind Engineering in Natural Hazards: Modeling, simulation, and mitigation of windstorm impact on critical infrastructure, Fluid Dynamics Committee, Special Issue by Engineering Mechanics Institute (EMI), American Society of Civil Engineers (ASCE), pp. 55–78. https://doi.org/10.1061/9780784415153.ch03
- Spencer, B. F. Jr, Christenson, R. E., & Dyke, S. J. (1999). Next generation benchmark control problem for seismically excited buildings. In Proceedings of the second world conference on structural control, Kyoto, Japan, 29 June–2 July (pp. 1351–1360).Google Scholar
- Tuan, A. Y., & Shang, G. Q. (2014). Vibration control in a 101-storey building using a tuned mass damper. Journal of Applied Science and Engineering, 17(2), 141–156.Google Scholar