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김영식(Kim Young-Seek),김민준(Kim Min-Jun),윤석광(Yoon Seok-Gwang),김상우(Kim Sang-Woo),이정윤(Lee Jung-Yoon),김길희(Kim Kil-Hee) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.4
This paper investigates the structural performance of the concrete spirally reinforced with high-strength reinforcement. The main test parameters were the yield strength of transverse reinforcement and cross sectional shape of specimen. 12 cylindrical specimens with a diameter of 150㎜ and a height of 300㎜ and 12 square specimens with a width 133㎜ and a height of 266㎜ were cast and tested under monotonic concentric compression. To evaluate the confinement effect of spiral reinforcement, the specimens tested in this study were designed to have no cover concrete. The observed results showed that the strength and ductility of circular specimens were improved as the yield strength of steel spirals increased. However, the confinement effect of square specimens was not significant than that of circular specimens.