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- W2243377829 abstract "In this paper, the e ectiveness of Tuned Mass Dampers (TMDs) in controlling building structuresunder earthquake excitations is studied through investigating the practical considerations andvibration control eciency of tuned mass dampers for 5-, 8-, 10- and 15-story buildings utilizinga structural system with special Moment-Resisting Frames (MRFs) in both directions. Assumingits frequency to be near the 1st natural frequency of buildings, it is designed to control thelargest response of the buildings. The e ect of detuning, on some TMD parameters, on theseismic performance is studied through time-history analysis using the El Centro and Tabasearthquake records. In addition, the results of time-history analysis are compared with those ofa response spectrum analysis for the structures with and without TMD, in order to judge itse ectiveness. Under earthquake excitation, the performance of structures having TMDs greatlydepends on the characteristics of the ground motion. When the rst mode of a MDOF structuredominates the structural response, a seismic response reduction can be easily achieved. Whilethe rst mode response of a structure with TMD is proved to be substantially reduced, thehigher mode response, in fact, increases as the number of stories increases. It is observed thatTMD is e ective in reducing maximum displacement in MRF buildings by as much as 32.2%in the Tabas earthquake and 45.3% in the El Centro earthquake. The maximum displacementresults of a response spectrum analysis for the uncontrolled and controlled case in the El Centroearthquake, in an 8-story structure, are 25.70 cm and 14.59 cm, respectively, whereas themaximum displacement using time-history analysis, in the uncontrolled and controlled cases,are 27.54 cm and 15.14 cm, respectively." @default.
- W2243377829 created "2016-06-24" @default.
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- W2243377829 date "2008-02-01" @default.
- W2243377829 modified "2023-09-26" @default.
- W2243377829 title "SEISMIC PERFORMANCE OF TMDS IN IMPROVING THE RESPONSE OF MRF BUILDINGS" @default.
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