건물의 내풍성능향상을 위한 다중거동 복합 감쇠장치

In this study, the performance of a multi-action hybrid damper (MHD) is evaluated for a building structure under wind loads and preliminary design procedure of the MHD is proposed. The equivalent damping ratio increased by the MHD and the corresponding response reduction factor based on the Korean Building Code were calculated. Nonlinear time history analysis was conducted using a 20 story steel structure subject to the wind load generated according to the wind load spectrum. The average response reduction ratios in the floor displacement and inter-story drift are, respectively, 0.585 and 0.525. The results are almost same value as the wind load reduction factor 0.596 estimated in the preliminary design, which implies that the proposed method can be effectively used for estimating the control effect of the MHD.