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http://dx.doi.org/10.11112/jksmi.2014.18.3.040

Improvement and Evaluation of Seismic Performance of Reinforced Concrete Exterior Beam-Column Joints using Embedded CFRP Rods and CFRP Sheets  

Ha, Gee-Joo (경일대학교 건축학부, 사)건설기술정책연구원)
Kang, Hyun-Wook (사)건설기술정책연구원)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.3, 2014 , pp. 40-48 More about this Journal
Abstract
In this study, experimental research was carried out to evaluate and improve the seismic performance of reinforced concrete beam-column joint regions using strengthening materials (embedded CFRP rod and CFRP sheet) in existing reinforced concrete building. Therefore it was constructed and tested six specimens retrofitting the beam-column joint regions using such retrofitting materials. Specimens, designed by retrofitting the beam-column joint regions of existing reinforced concrete building, were showed the stable failure mode and increase of load-carrying capacity due to the effect of crack control at the times of initial loading and confinement of retrofitting materials during testing. Specimens RBCJ-SRC2, designed by the retrofitting of CFRP Rod and CFRP Sheet in reinforecd beam-column joint regions were increased its maximum load carrying capacity by 1.97 times and its energy dissipation capacity by 2.08 times in comparison with standard specimen RBCJ for a displacement ductility of 4 and 7. Also, specimens RBCJ-SRC2 were increased its maximum load carrying capacity by 1.09~1.11 times in comparison with specimen RBCJ-SR series. And Specimens RBCJ-CS, RBCJ-SR series, RBCJ-SRC2 were increased its energy dissipation capacity by 1.10~2.30 times in comparison with standard specimen RBCJ for a displacement ductility of 5, 6.
Keywords
Embedded CFRP rod; CFRP sheet; Beam-column joint; Seismic performance; Retrofitting; Improvement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Ha, G. J., Kim, J. K., and Chung, L., (1992), Response of Reinforced High-Strength Concrete Beam-Column Joints Under Load Reversals, Magazine of Concrete Research, 160, 175-184.
2 Ha, G. J., Kim, J. K., Chung, L., (1992), Improvement of Earthquake-Resistant Performance of R/C Beam-Column Joint Constructed with High-Strength Concrete Subjected to Cyclic Loading, Journal of the Korea Concrete Institute, 4(1), 135-145.   과학기술학회마을
3 Ryu, D. W., (2008), Flexural and Shear Design of RC Members Strengthened by FRP Jacket, Theses for Master's Degree, Kyungpook National University.
4 Abdel-Fattah, B., and Wight, K. (1987), Study of Moving Beam Plastic Hinging Zones for Earthquake Resistant Design of R/C Buildings, ACI Journal, Proceedings, 89(84-S4), 31-39.
5 ACI-ASCE Committee 352, Recommendations for Design of Beam-Column Joints in Monolithic Reinforced Concrete Structures, ACI Journal, Proceedings, 82(3), 266-283.
6 Ha, G. J., Yang, J. K., Kim, J. K., Chung, L., (1992), Hysteretic Behavior of Reinforced High-strength Concrete Beam-Column Joint Under Load Reversals, Journal of the Architectural Institute of Korea Structure & Construction, 8(9), 231-240.
7 Park, Y, K., (2007), A Study on the Evaluation of Availability Adhesive Strengthening Method Using Carbon Fiber, Theses for Master's Degree, Cheongju University.
8 Ha, G. J., Shin, J. H., Kang, H. W., (2011), Improvement and Evaluation of Seismic Performance for Reinforced Concrete Beam-Column Joints Using High Performance Embedded FRP, Journal of the Korea Concrete Institute, 23(3), 385-392.   과학기술학회마을   DOI
9 Cho, C. G., and Park, M. H. (2002), Finite Element Prediction of the Influence of Confinement on RC Beam-Columns under Single or Double Curvature Bendings, Engineering Structures, 25(12), 1525-1536.
10 ACI 318-11 (2011), Building Code Requirements for Structural Concrete) and Commentary (ACI 318-11), American Concrete Institute, Farmington Hills Michigan.