3차원 시간이력해석을 통한 하이브리드 비좌굴가새의 풍진동제어능력 평가

Abstract

Buckling Restrained Braces(BRBs) show good seismic behavior. They do not dissipate energy, however, when they are subjected to wind. Hybrid Buckling Restrained Braces(H-BRBs), which can improve the wind performance of the BRB system,are a kind of hybrid damper system composed of a viscoelastic damper and BRBs. In this paper, the H-BRBs subjected to wind load was explored in the method of time history analysis for 3-dimensional model. The wind load for serviceability design was obtained from the wind tunnel test. Along wind and across wind load datas were used. Steel brace, buckling restrained brace, and H-BRB were compared in terms of the roof displacement, the roof acceleration, hysteresis loops. It was concluded that H-BRBs show good performance for the wind load and have improved the high-rise building performance at a serviceability level.