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Structural Engineering and Mechanics Volume 52, Number 4, November25 2014 , pages 843-855 DOI: https://doi.org/10.12989/sem.2014.52.4.843 |
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Effects of infilled concrete and longitudinal rebar on flexural performance of composite PHC pile |
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Jin Wook Bang, Bang Yeon Lee, Byung Jae Lee, Jung Hwan Hyun
and Yun Yong Kim
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| Abstract | ||
| Concrete infill and reinforcement are one of the most well-known strengthening methods of structural elements. This study investigated flexural performance of concrete infill composite PHC pile (ICP pile) reinforced by infill concrete and longitudinal rebars in hollow PHC pile. A total four series of pile specimens were tested by four points bending method under simply supported conditions and investigated bending moment experimentally and analytically. From the test results, it was found that although reinforcement of infilled concrete on the pure bending moment of PHC pile was negligible, reinforcement of PHC pile using infilled concrete and longitudinal rebars increase the maximum bending moment with range from 1.95 to 2.31 times than that of conventional PHC pile. The error of bending moment between experimental results and predicted results by nonlinear sectional analysis on the basis of the conventional layered sectional approach was in the range of -2.54 % to 2.80 %. The axial compression and moment interaction analysis for ICP piles shows more significant strengthening effects of infilled concrete and longitudinal rebars. | ||
| Key Words | ||
| PHC pile; infilled concrete; longitudinal rebar; flexural performance | ||
| Address | ||
| Jin Wook Bang, Jung Hwan Hyun and Yun Yong Kim: Department of Civil Engineering, Chungnam National University, 99 Daehak-ro Yuseong-gu, Daejeon, 305-764, Republic of Korea Bang Yeon Lee: School of Architecture, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, 500-757, Republic of Korea Byung Jae Lee: R&D Center, JNTINC Co., Ltd., Hyundaikia-ro 830beon-Gil, Bibong-Myeon, Hwaseong-City, Gyeonggi-Do 445-842, Republic of Korea | ||