Abstract
Structural control technologies are applied to reinforce the building to resist the external forces. Especially, passive control method is widely accepted by earthquake research community; therefore, many researchers are developing semi-active structural control systems. There are two types of semi-active hydraulic dampers—Displacement Dependent Semi-Active Hydraulic Damper (DSHD) and Accumulated Semi-Active Hydraulic Damper (ASHD) have been proposed by Shih et al. In this study, oil circuit and element hysteretic behavior of DSHD and ASHD are discussed. Then, a ten floor shear frame structure installed with DSHD and ASHD with various control conditions is simulated for analyzing the control effect of the maximum story drift, maximum absolute acceleration, and maximum base shear. Test and analysis results reveal that shock absorption ratio of structural displacement of the roof of ten floor structure added with ASHD reaches to 87.9 %. Structural acceleration responses of this structure can be diminished by the synchronization of ASHD. Base shear of this structure installed with these two dampers with various control conditions is reduced 55–60 %. Seismic proof of these two semi-active hydraulic dampers can be demonstrated by this study.
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