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Structural Engineering and Mechanics
  Volume 55, Number 5, September10 2015, pages 931-951

Theoretical study of UHPCC composite column behaviors under axial compression
Xiang-Guo Wu, Ruofei Zou, Xinyu Zhao and Qun Yu

    To improve the durability and service life of reinforced concrete column such as bridge piers, an advanced composite column made of Ultra High Performance Cementitious Composites (UHPCC) permanent form is proposed. Based on elasticity plasticity theory, axial compression behavior of the composite column was studied theoretically. The first circumferential cracking load and ultimate limit loading capacity are derived for the composite column. Short composite column compression tests and numerical simulations using FEM method were carried out to justify the theoretical formula. The effects of UHPCC tube thickness on the axial compression behavior were studied. Using the established theoretical model and numerical simulation, the large dimension composite columns are calculated and analyzed with different UHPCC tube thickness. These studies may provide a reference for advanced composite column design and application.
Key Words
    ultra high performance cementitious composites; composite column; cracking load; ultimate limit loading capacity; short column compression test
Xiang-Guo Wu: Key Lab of Structures Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Heilongjiang, Harbin, 150090, China; School of Civil Engineering, Harbin Institute of Technology, Heilongjiang, Harbin 150090, China
Ruofei Zou: Department of Civil and Environmental Engineering, University of Illinois, IL 61801-2352, USA
Xinyu Zhao and Qun Yu: School of Architecture Engineering, Harbin Engineering University, Harbin 150001, China

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