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http://dx.doi.org/10.5000/EESK.2022.26.4.165

An Experimental Study on Seismic Reinforcement of Dry Type Buckling Restrained Braces Laterally Using Buckling Restrained Rings  

Lee, Seon Jae (Department of Architectural Engineering, Dankook University)
Moon, Hee Suk (Technical Research Center, Metro T&C Co.)
Park, Byung Tae (Technical Research Center, Metro T&C Co.)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.26, no.4, 2022 , pp. 165-172 More about this Journal
Abstract
This study is conducted to verify the seismic reinforcement effects of internally inserted buckling-restrained braces supported laterally by buckling-restrained rings for the seismic reinforcement of existing reinforced concrete buildings with non-seismic details. First, to evaluate the performance of KDS, the hysteretic characteristics of buckling-restrained braces are verified, and it is discovered that they satisfy the conformance criteria of the displacement-dependent damping device. Three full-scale, two-story reinforced concrete framework specimens are prepared to verify the seismic reinforcement effects, and the proposed buckling-restrained braces are bolstered with single diagonal and V-shaped braces to be compared with non-reinforced specimens. By performing a comparison with non-reinforced specimens that present intensive shear cracks at the bottom of first-floor columns, it is revealed that the maximum load and energy dissipation of specimens reinforced with the proposed buckling restrained braces, in which the structural damage extends evenly throughout the system, are approximately 4 and 6.2 times higher, respectively, which proves the effectiveness of the proposed seismic reinforcement method.
Keywords
Buckling-restrained braces; Buckling-restrained rings; Non-seismic details; Seismic reinforcement; Full-scale;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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