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Title |
Limiting Capacity of Reinforced Concrete Ordinary Walls for Emulative Evaluation
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Authors |
서수연(Soo-Yeon Seo) ; 문정호(Jeong-Ho Moon) ; 윤현도(Hyun-Do Yun) ; 오영훈(Yeong-Hun Oh) ; 김대호(Dae-Ho Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2023.35.4.443 |
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Keywords |
프리캐스트 콘크리트 시스템; 실험; RC 보통전단벽; 한계 변위비; 동등성 평가 precast concrete system; experiment; RC ordinary shear walls; limiting drift; emulative evaluation |
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Abstract |
There is a growing need to assess the capacity of precast concrete systems in order to ensure equivalent structural capacity comparable to monolithic structures. In this study, experiments were conducted on reinforced concrete (RC) ordinary shear walls with various aspect ratios, and the results were analyzed to determine their limiting drifts. Four ordinary shear walls with identical sectional detail were tested by applying lateral loads at the top to simulate a prepared displacement history. The test results revealed that all specimens exhibited flexural behavior and showed buckling of the main bars around the compression end at the final stage. Regardless of the aspect ratio, all specimens reached their maximum load capacity at a drift ratio of about 1.0 %. At the failure state (reaching 0.8P_u at the third cycle), the drift ratio of each specimen varied from 1.44 to 2.1 % in proportion to the aspect ratio, up to a h_w/l_w of 2.0. The nominal strength calculated according to the Korean design code showed good agreement with the experimental results. Based on the analysis of the experimental findings, a limiting drift for RC ordinary walls was defined to facilitate emulative evaluation, following the same procedure used for special shear walls in ACI 550.6-19. By using the proposed limiting drift, it becomes possible to emulatively evaluate the precast intermediate walls corresponding to the RC ordinary shear walls.
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