Influence of Confinement Interaction on the Compressive Behavior of Steel Tube–Reinforced Concrete Columns
Publication: Journal of Structural Engineering
Volume 150, Issue 2
Abstract
A steel tube–reinforced concrete (ST-RC) column is composed of the inner concrete-filled steel tube (CFST) component and peripheral reinforced concrete (RC) component. In this study, the confinement interaction mechanism of axially loaded steel tube–reinforced concrete columns (ST-RC) was evaluated experimentally and analytically. Eleven column specimens were tested, including five ST-RC, three CFST, and three RC columns. The test results found that the confinement interaction between core CFST and outer RC components integrates both advantages while remarkably altering the section equilibrium and confinement mechanism compared with conventional confined concrete. Specifically, the following two aspects need to be considered. First, since the core CFST component is subjected to the secondary confinement provided by outer stirrups, the capacity of an ST-RC column is 1.07–1.21 times greater than that of the simple superposition of CFST and RC components (CFST+RC). Second, for the outer RC component, because the filled-in concrete is confined by the steel tube, the outer stirrups confinement cannot be effectively activated due to the weakened dilation of concrete. Such strain-lagging leads to a steeper falling branch of the load–axial strain curve of the ST-RC column under compression than that of CFST+RC. Finally, based on two modified constitutive models considering the confinement interaction mechanism in the ST-RC column, a well-defined analytical model for predicting the structural performance of axially loaded ST-RC columns was established.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
Support from the National Natural Science Foundation of China with Grant No. 51890901 and Natural Science Foundation of Hunan Province with Grant Nos. 2020JJ2003 and 2020RC5005 are gratefully acknowledged.
References
Abdelkarim, O. I., M. A. ElGawady, S. Anumolu, A. Gheni, and G. E. Sanders. 2018. “Behavior of hollow-core FRP-concrete-steel columns under static cyclic flexural loading.” J. Struct. Eng. 144 (2): 04017188. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001905.
Cai, J. 2002. “An experimental research on the composite column with core of high-strength concrete filled steel tube under axial compression loading.” [In Chinese.] South China Univ. Technol. 30 (6): 81–85.
Cai, M., X. Ke, and Y. Su. 2020. “Axial compressive performance of RAC-encased RACFST composite columns.” Eng. Struct. 210 (May): 110393. https://doi.org/10.1016/j.engstruct.2020.110393.
CECS (China Association for Engineering Construction Standardization). 2019. Technical specification for steel tube-reinforced concrete column structure. CECS188-19. Beijing: CECS.
Chen, Z. Y. 2002. “Study of the method for design and calculation of HSC columns reinforced with concrete filled steel tube.” Ph.D. disssertation, College of Civil Engineering, Dalian Univ. Technol.
Cusson, D., and P. Paultre. 1995. “Stress-strain model for confined high-strength concrete.” J. Struct. Eng. 121 (3): 468–477. https://doi.org/10.1061/(ASCE)0733-9445(1995)121:3(468).
Han, L. H., and Y. F. An. 2014. “Performance of concrete-encased CFST stub columns under axial compression.” J. Constr. Steel Res. 93 (Feb): 62–76. https://doi.org/10.1016/j.jcsr.2013.10.019.
Hatzigeorgiou, G. D. 2008. “Numerical model for the behavior and capacity of circular CFT columns, Part I: Theory.” Eng. Struct. 30 (6): 1573–1578. https://doi.org/10.1016/j.engstruct.2007.11.001.
Hong, H.-P., H. Yuan, L. Deng, and Y. Bai. 2019. “Axial capacity of steel tube-reinforced concrete stub columns.” Eng. Struct. 183 (Mar): 523–532. https://doi.org/10.1016/j.engstruct.2019.01.044.
Kang, H. Z. 2009. “Study on mechanical properties of concrete-filled steel tube composite columns.” Ph.D. dissertation, Dept. of Civil Engineering, Tsinghua Univ.
Kang, H. Z., and J. R. Qian. 2006. “Experimental study on axial compression strength of concrete-filled steel tubular composite columns.” J. Build. Struct. 36 (S1): 913–916.
Karabinis, A., and T. Rousakis. 2006. “FRP confining effects on steel reinforced concrete square sections subjected to axial load.” In Proc., 2nd fib Int. Congress. Lausanne, Switzerland: International Federation for Structural Concrete.
Lai, M. H., and J. C. M. Ho. 2015. “Axial strengthening of thin-walled concrete-filled-steel-tube columns by circular steel jackets.” Thin-Walled Struct. 97 (Dec): 11–21. https://doi.org/10.1016/j.tws.2015.09.002.
Lai, M. H., and J. C. M. Ho. 2016. “A theoretical axial stress-strain model for circular concrete-filled-steel-tube columns.” Eng. Struct. 125 (Oct): 124–143. https://doi.org/10.1016/j.engstruct.2016.06.048.
Légeron, F., and P. Paultre. 2003. “Uniaxial confinement model for normal- and high-strength concrete columns.” J. Struct. Eng. 129 (2): 241–252. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:2(241).
Li, Y. J., and F. Liao. 2012. “Behavior of concrete-filled steel tube reinforced concrete columns subjected to eccentric loads.” [In Chinese.] J. Guangxi Univ. Nat. Sci. Ed. 37 (6): 6.
Liu, L. Y. 2013. “Study on behavior of a new concrete-filled steel tube reinforced concrete column under axial compression.” Master’s dissertation, Dept. of Civil Engineering, Fuzhou Univ.
Liu, Y., Z. X. Guo, L. P. Jia, and Q. M. Chen. 2015. “Experimental study on axial compression performance and design method of core steel tube reinforced concrete short columns.” [In Chinese.] J. Build. Struct. 36 (12): 135–142. https://doi.org/10.14006/j.jzjgxb.2015.12.016.
Mander, J. B., M. J. N. Priestley, and R. Park. 1988. “Theoretical stress-strain model for confined concrete.” J. Struct. Eng. 114 (8): 1804–1826. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:8(1804).
Nie, J. G., Y. Bai, and C. S. Cai. 2008. “New connection system for confined concrete columns and beams. I: Experimental study.” J. Struct. Eng. 134 (12): 1787–1799. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:12(1787).
Qing-Xiong, W., S. Zhi-Min, Y. Hui-Hui, and H. Yu-Fan. 2019. “Design of CFST-RC high-rise piers and static performance analysis.” [In Chinese.] Bridge Constr. 49 (6): 84–89.
Razvi, S., and M. Saatcioglu. 1999. “Confinement model for high-strength concrete.” J. Struct. Eng. 125 (3): 281–289. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(281).
Saatcioglu, M., and S. R. Razvi. 1992. “Strength and ductility of confined concrete.” J. Struct. Eng. 118 (6): 1590–1607. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590).
Sakino, K., H. Nakahara, S. Morino, and I. Nishiyama. 2004. “Behavior of centrally loaded concrete-filled steel-tube short columns.” J. Struct. Eng. 130 (2): 180–188. https://doi.org/10.1061/(ASCE)0733-9445(2004)130:2(180).
Sheikh, S. A., and S. M. Uzumeri. 1980. “Strength and ductility of tied concrete columns.” J. Struct. Div. 106 (5): 1079–1102. https://doi.org/10.1061/JSDEAG.0005416.
Teng, J. G., Y. M. Hu, and T. Yu. 2013. “Stress–strain model for concrete in FRP-confined steel tubular columns.” Eng. Struct. 49 (Apr): 156–167. https://doi.org/10.1016/j.engstruct.2012.11.001.
Wang, Y., G. Chen, B. Wan, B. Han, and J. Ran. 2021. “Axial compressive behavior and confinement mechanism of circular FRP-steel tubed concrete stub columns.” Compos. Struct. 256 (Jan): 113082. https://doi.org/10.1016/j.compstruct.2020.113082.
Yong, Y.-K., M. G. Nour, and E. G. Nawy. 1988. “Behavior of laterally confined high-strength concrete under axial loads.” J. Struct. Eng. 114 (2): 332–351. https://doi.org/10.1061/(ASCE)0733-9445(1988)114:2(332).
Zhang, J., X. Li, W. Cao, and C. Yu. 2019. “Cyclic behavior of steel tube-reinforced high-strength concrete composite columns with high-strength steel bars.” Eng. Struct. 189 (Jun): 565–579. https://doi.org/10.1016/j.engstruct.2019.04.006.
Zhou, H., H. Yang, and C. Zhang. 2015. “Structural design of Tianhe international center.” [In Chinese.] Chongqing Archit. 14 (10): 29–34.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 150 • Issue 2 • February 2024
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Dec 8, 2022
Accepted: Sep 7, 2023
Published online: Nov 16, 2023
Published in print: Feb 1, 2024
Discussion open until: Apr 16, 2024
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
- Yuan Huang, Xiao-Li Zhang, Hua-Sen Lu, Bing Han, Theoretical Axial and Lateral Stress–Strain Model for Steel Tube–Reinforced Concrete Column, Journal of Structural Engineering, 10.1061/JSENDH.STENG-13434, 150, 10, (2024).