CONTROL PERFORMANCE DIAGRAMS FOR TUNED MASS DAMPERS MOUNTED ON INELASTIC REINFORCED CONCRETE BUILDINGS

Abstract

This paper describes a design method for tuned mass dampers (TMDs) that reduce seismic responses in reinforced concrete buildings. To reduce the seismic responses to a wide range of strong ground motions, displacement-dependent optimal tuning ratios of linear TMDs are formulated for nonlinear responses. Performance curve diagrams are proposed using the optimal tuning ratios determined by nonlinear time history analyses with various mass ratios and damping ratios. These diagrams allow us to visually determine the appropriate TMD under the constraints of its mass, damping coefficient, and peak deformation.