Volume 3C: 15th Biennial Conference on Mechanical Vibration and Noise — Vibration Control, Analysis, and Identification · 1995 · 19 citations · 0 references
EngineeringCivil EngineeringBuilding StructuresStructural EngineeringVibrationDamped VibrationEarthquake Response Of StructuresStructural DampingStructural MechanicsStructural VibrationVibration AnalysisBuilding Seismic ResponseDamper DynamicsDamper SystemsDamping OptimizationDamping SystemsDesign Optimization Of DampersHigh-rise Building ApplicationsVibration Control Of Buildings
Abstract A hybrid mass damper system has been developed with a view to counteracting wind- and earthquake-excited vibrations of large high-rise building structures. In order to eliminate the large space needed to accommodate a pendulum-type mass damper adapted to the long period of high-rise building, mechanism has been devised for suspending the auxiliary mass on a V-shaped rail sliding on rollers. The base angle of the V-shaped rail is varied for adjusting the natural period of the mass damper system. A suboptimal algorithm based on the minimum norm method has been adopted for designing the auxiliary mass driving system. Three units of this damper system, each equipped with auxiliary mass weighing 110 tons, have been installed on a 52-story building. Satisfactory performance conforming in all practical aspects with design has been verified from vibration test on actual building after installation. As sequel, the functioning of the system during the first year of service is also reported.