EFFECT OF ADDED DAMPERS ON THE SEISMIC RESPONSE OF MULTISTORY BUILDINGS

The consequences of adding supplemental damping in buildings were inve stigated. The analysis included response determinations and energy com ponent evaluations. The reliability of modal superposition was studied by considering the effects of damping nonproportionality. Four proced ures were proposed to calculate the response of a structure having sup plemental damping and alternative patterns of damper installation to i ncrease the efficiency of the damper in reducing the response were con sidered. An example ten-story building was used to illustrate these an alyses and the feasibility of introducing supplemental damping in stru ctures.