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Structural Engineering and Mechanics Volume 52, Number 5, December10 2014 , pages 857-873 DOI: https://doi.org/10.12989/sem.2014.52.5.857 |
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Structural behaviors of sustainable hybrid columns under compression and flexure |
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Wu Xiang-Guo, Hu Qiong, Zou Ruofei, Zhao Xinyu and Yu Qun
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| Abstract | ||
| Structural behaviors of a sustainable hybrid column with the ultra high performance cementitious composites (UHPCC) permanent form under compression and flexure were studied. Critical state and failure stage characters are analyzed for large and small eccentricity cases. A simplified theoretical model is proposed for engineering designs and unified formulas for loading capacity of the hybrid column under compression and flexure loads are derived, including axial force and moment. Non-linear numerical analysis is carried out to verify the theoretical predictions. The theoretical predictions agree well with the numerical results which are verified by the short hybrid column tests recursively. Compared with the traditional reinforced concrete (RC) column, the loading capacity of the sustainable hybrid column is improved significantly due to UHPCC confinements. | ||
| Key Words | ||
| sustainable design; hybrid column; loading capacity; ultra high performance cementitious composites | ||
| Address | ||
| Wu Xiang-Guo and Hu Qiong: Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, China; School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China Zou Ruofei: Department of Civil and Environmental Engineering, University of Illinois, IL 61801-2352, USA Zhao Xinyu and Yu Qun: School of Architecture Engineering, Harbin Engineering University, Harbin 150001, China | ||