A Study on the Adaptability of Hybrid Mass Damper for the Vibration Control of Structure under Base Excitation

지반 기진력을 받는 구조물의 진동 제어를 위한 Hybrid Mass Damper 의 유용성 연구

A hybrid mass damper that combines a tuned mass damper and an actuator has been recognized to be one of the most promising devices for vibration control of a tall building subjected to dynamic loads such as wind and earthquake. In this paper, in order to reduce vibration levels of a 5-story test structure, a hybrid mass damper using AC-servomotor was designed and developed. And control performances using HMD and TMD under random and earthquake excitations are compared through experimental test. It is confirmed that it is more effective to reduce the vibration levels of the test structure using HMD especially for earthquake excitation.