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Steel and Composite Structures Volume 20, Number 6, April30 2016 , pages 1259-1274 DOI: https://doi.org/10.12989/scs.2016.20.6.1259 |
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Seismic performances of centrifugally-formed hollow-core precast columns with multi-interlocking spirals |
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Jin-Ha Hwang, Deuck Hang Lee, Jae Yuel Oh, Seung-Ho Choi, Kang Su Kim and Soo-Yeon Seo
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| Abstract | ||
| A precast composite column system has been developed in this study by utilizing multi interlocking spiral steel into a centrifugally-formed hollow-core precast (CHPC) column. The proposed hybrid column system can have enhanced performances in the composite interaction behavior between the hollowed precast column and cast-in-place (CIP) core-filled concrete, the lap splice performance of bundled bars, and the confining effect of concrete. In the experimental program, reversed cyclic loading tests were conducted on a conventional reinforced concrete (RC) column fabricated monolithically, two CHPC columns filled with CIP concrete, and two steelreinforced concrete (SRC) columns. It was confirmed that the interlocking spirals was very effective to enhance the structural performance of the CHPC column, and all the hollow-core precast column specimens tested in this study showed good seismic performances comparable to the monolithic control specimen. | ||
| Key Words | ||
| hollow column; precast concrete; interlocking spiral; seismic behavior; composite | ||
| Address | ||
| (1) Jin-Ha Hwang, Jae Yuel Oh, Seung-Ho Choi, Kang Su Kim: Department of Architectural Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul 02504, Republic of Korea; (2) Deuck Hang Lee: Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, 205 N. Mathews Ave. Urbana, IL 61801, USA; (3) Soo-Yeon Seo: Department of Architectural Engineering, Korea University of Transportation, 50 Daehak-ro, Chungju-si, Chungbuk 27469, Republic of Korea. | ||