하이브리드 비좌굴가새의 최적설계에 대한 해석 연구

Buckling-Restrained Braces (BRBs) are not able to dissipate the energy under minor earthquakes or wind loads. Hybrid Buckling-Restrained Braces (H-BRBs) which are composed of a viscoelastic damper and BRB have been developed to improve the performanceof BRBs. In this paper, time history analyses were performed to investigate how the position and range of H-BRBs have aninfluence on the optimum design of tall buildings. Wind force data (10 year return period) obtained from wind tunnel test was used inthe time history analysis. It is concluded that H-BRB applied at the bottom of building is effective to reduce the story displacementand H-BRB applied at the top and bottom of building is able to improve the serviceability of the building. Also it is effective to controlserviceability when H-BRBs are installed at the top of the building in the efficiency of H-BRB