Experimental study on steel reinforced concrete columns subjected to combined bending–torsion cyclic loading |
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| Authors: | Shicai Chen Wei Peng Weiming Yan |
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| Affiliation: | The Ministry of Education Laboratory of City and Project Safety and Disaster Alleviation, Beijing University of Technology, Beijing, China |
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| Abstract: | An experimental investigation and analysis of the mechanical behavior of steel reinforced concrete (SRC) columns under combined bending–torsion cyclic loads is presented in this paper. Seven SRC columns with the same cross‐sectional construction were tested under various torsion moment to bending moment ratios and axial load levels. The effect of the torsion to bending moment ratio on the failure characteristics, hysteretic behavior, bearing capacity, and deformation characteristics of the SRC columns was studied. Results indicate that both bending and torsion bearing capacity are reduced under combined bending and torsion loads and that the torsion–bending ratio is the key parameter that determines the failure mode of the SRC columns. Based on the tests results, an equation expressing the interaction curve between the bending and torsion is proposed. |
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| Keywords: | combined loading failure mode seismic performance steel reinforced concrete (SRC) columns torsion torsion to bending moment ratio |
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