Seismic Behavior of Ultra-High Performance Concrete Short Columns Confined with High-Strength Reinforcement
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In order to further study the performance of ultra-high performance concrete (UHPC) structures under seismic conditions, three UHPC short columns confined with high-strength reinforcement were tested alongside one UHPC short column confined with normal-strength reinforcement and one reinforced UHPC short column confined with carbon fiber reinforced polymer (CFRP). The results show that high-strength reinforcement improved the ductility and energy-absorbing ability of the UHPC columns. In addition, high-strength reinforcement only made a marginal difference to stiffness degeneration but did contribute to the specimen’s initial stiffness; both high axial loads and small shear span ratios accelerated stiffness degeneration.
Keywordsultra-high performance concrete high-strength reinforcement short column seismic behavior
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The authors would like to acknowledge the financial support provided by the Beijing Nature Science Foundation-Municipal Education Committee joint funding project (grant number KZ201810005008), and the National Natural Science Foundationof China (grant number 51578021).
- Bayrak, O. and Sheikh, S. A. (1998). “Confinement reinforcement design considerations for ductile HSC columns.” Journal of Structural Engineering, Vol. 124, No. 9, pp. 999–1010, DOI: https://doi.org/10.1061/(asce)0733-9445(1998)124:9(999).CrossRefGoogle Scholar
- Bayrak, O. and Sheikh, S. A. (2004). “Seismic performance of high strength concrete columns confined with high strength steel.” 13th World Conference on Earthquake Engineering, Vancouver, Canada, pp. 1–6.Google Scholar
- Hung, C.-C., Yen, W.-M., and Yu, K.-H. (2016). “Vulnerability and improvement of reinforced ECC flexural members under displacement reversals: Experimental investigation and computational analysis.” Construction and Building Materials, Vol. 107, pp. 287–298, DOI: https://doi.org/10.1016/j.conbuildmat.2016.01.019.CrossRefGoogle Scholar
- Hussein, L. and Amleh, L. (2015). “Structural behavior of ultra-high performance fiber reinforced concrete-normal strength concrete or high strength concrete composite members.” Construction and Building Materials, Vol. 93, pp. 1105–1116, DOI: https://doi.org/10.1016/j.conbuildmat.2015.05.030.CrossRefGoogle Scholar
- Sarmiento, P. A., Torres, B., Ruiz, D. M., Alvarado, Y. A., Gasch, I., and Machuca, A. F. (2018). “Cyclic behavior of ultra-high performance fiber reinforced concrete beam-column joint.” Structural Concrete, Vol. 20, No. 1, pp. 348–360, DOI: https://doi.org/10.1002/suco.201800025.CrossRefGoogle Scholar
- Wang, T., Liu, X., and Zhao, H. (2014). “Experimental research on seismic behavior of +-shaped columns reinforced with high-strength steel bars under cyclic loading.” KSCE Journal of Civil Engineering, Vol. 19, No. 4, pp. 982–993, DOI: https://doi.org/10.1007/s12205-014-1211-x.CrossRefGoogle Scholar
- Xu, S., Wu, C., Liu, Z., Han, K., Su, Y., Zhao, J., and Li, J. (2017). “Experimental investigation of seismic behavior of ultra-high performance steel fiber reinforced concrete columns.” Engineering Structures, Vol. 152, pp. 129–148, DOI: https://doi.org/10.1016/j.engstruct.2017.09.007.CrossRefGoogle Scholar