كنترل ارتعاشات لرزه اي قابهاي فولادي متعارف به كمك ميراگر جرمي

CONTROL OF SEISMIC VIBRAnONS IN TYPICAL STEEL FRAMES USING TUNED MASS DAMPERS

Through the recent two decades, Tuned Mass Dampers (TMD) have been used as one of passive control methods against seismic forces for tall buildings. In this paper, the impact of TMD on seismic performance of two X-braced and moment resisting frames in different conditions has been studied. The location of TMD in various height levels has been investigated to find its ideal placement. Multi TMDs have been used to suppress seismic vibrations in two lateral directions in order to compare the results with the case with just one TMD. Based on the obtained results, TMD gets basically activated after the first peak of imposed loads or excitations to suppress next peak amounts. Also, peak displacement mitigation depends highly on earthquake records characteristics.