Structural Engineering and Mechanics

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Structural behaviors of sustainable hybrid columns under compression and flexure

  • Wu, Xiang-Guo (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology) ;
  • Hu, Qiong (Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology) ;
  • Zou, Ruofei (Department of Civil and Environmental Engineering, University of Illinois) ;
  • Zhao, Xinyu (School of Architecture Engineering, Harbin Engineering University) ;
  • Yu, Qun (School of Architecture Engineering, Harbin Engineering University)
  • Received : 2013.11.28
  • Accepted : 2014.04.25
  • Published : 2014.12.10
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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.

Keywords

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