Optimal Critical-Mode Control of Building under Seismic Load

by Jann N. Yang, (M.ASCE), Prof.; Dept. of Civ., Mech., and Environmental Engrg., The George Washington Univ., Washington, D.C. 20052,
J. Lin Mingchien, Grad. Student; Dept. of Civ., Mech., and Environmental Engrg., The George Washington Univ., Washington, D.C. 20052,


Serial Information: Journal of the Engineering Mechanics Division, 1982, Vol. 108, Issue 6, Pg. 1167-1185


Document Type: Journal Paper

Abstract: An analysis of optimal open-loop critical-mode control for tall buildings excited by earthquakes is presented. It is shown that both the active mass damper and the active tendon system are effective in reducing the building response. Furthermore, the optimal critical-mode control is likely to be as effective as the optimal global control, since the building response under earthquake excitations is usually dominated by a few lowest modes.

Subject Headings: Earthquakes | Seismic loads | Damping | Tendons | Excitation (physics) | Seismic tests | Critical loads

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