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Earthquakes and Structures Volume 25, Number 4, October 2023 , pages 283-296 DOI: https://doi.org/10.12989/eas.2023.25.4.283 |
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Effect of reinforcing details on seismic behavior of RC exterior wide beam-column joint |
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Jae Hyun Kim, Seung-Ho Choi, Sun-Jin Han, Hoseong Jeong, Jae-Yeon Lee and Kang Su Kim
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| Abstract | ||
| This paper presents experimental and numerical studies of seismic performance on reinforced concrete (RC) wide beam (WB) joints. Two RC-WB joint specimens and one conventional RC joint specimen were fabricated using the reinforcing details of longitudinal reinforcing bars in a beam as a variable, and quasi-static cyclic loading tests were performed. The results were used to compare and analyze the load-drift ratio relationship, failure mode, and seismic performance of the specimens quantitatively. In addition, a finite element (FE) analysis of the RC-WB joint was conducted, and the rationality of the FE model was validated by comparing it with the test results. Based on the FE model, a parametric study was conducted, where the ratio of longitudinal reinforcing bars placed on the outer and inner parts of the joint (pex⁄pin) was a key variable. The results showed that, in the RC-WB joint, an increase of pex⁄pin leads to more severe damage to concrete, which reduces the seismic performance of the RC-WB joints. | ||
| Key Words | ||
| exterior joint; quasi-static cyclic loading test; reinforced concrete; seismic performance; wide beam | ||
| Address | ||
| Jae Hyun Kim and Sun-Jin Han: Department of Architectural Engineering, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 02504, Korea Seung-Ho Choi: Department of Fire and Disaster Prevention Engineering, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 02504, Korea Hoseong Jeong and Kang Su Kim: Department of Architectural Engineering and the Smart City Interdisciplinary Major Program, University of Seoul, 163 Siripdae-ro, Dongdaemun-gu, Seoul 02504, Korea Jae-Yeon Lee: Department of Architecture, Mokwon University, 88 Doanbuk-ro, Seo-gu, Daejeon 35349, Korea | ||