Performance Comparison of High Strength Reinforced Concrete Circular and Square Columns Subjected to Flexural Controlled Cyclic Loading

Ali Ahmed, Ahmed Mohammed Youssef Mohammed, Koichi Maekawa

Abstract


In existing design practices selection of circular or square column shape mostly depends upon architectural needs rather than structural behavior. The behavior of equivalent area (circular and square), high strength reinforced concrete columns is reported to be same under monotonic loading conditions but their behavior under fatigue loading is not well-established. This paper presents the comparison of high strength reinforced concrete circular and square equivalent area columns’ performance (load-deflection behavior) under fatigue loading. Columns were casted in four configurations: square and circular shapes and with and without shear stirrups. Experimental results showed that in case of columns without shear stirrups, the square column resisted 38% more loading cycles as compared to circular column while the maximum deflection was 78% more than the circular column. Similarly, in case of columns with shear stirrups, square shaped column resisted 55% more loading cycles with only 5% more maximum deflections as compared to circular column. The results show that the square columns might be considered more ductile as compared to circular columns under the application of cyclic loading conditions like wind forces or seismic forces. Therefore, it might be concluded that square columns should be recommended for highly seismic regions as compared to circular columns with equivalent area.

 

Doi: 10.28991/cej-2021-03091639

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Keywords


Fatigue Behavior; Circular Columns; Square Columns; Flexural Behavior; Cyclic Loading; High Strength Concrete.

References


Caldarone, Michael A. “High-strength Concrete: a Practical Guide.” CRC Press, (2014).

Ozawa, Kazumasa, Koichi Maekawa, and Hajime Okamura. "Development of high performance concrete." Journal of the Faculty of Engineering 41, no. 3 (1992): 149-157.

Barrera, A.C., J.L. Bonet, M.L. Romero, and M.A. Fernández. “Ductility of Slender Reinforced Concrete Columns under Monotonic Flexure and Constant Axial Load.” Engineering Structures 40 (July 2012): 398–412. doi:10.1016/j.engstruct.2012.03.012.

Tirasit, P., and K. Kawashima. “Seismic Performance of Square Reinforced Concrete Columns Under Combined Cyclic Flexural and Torsional Loadings.” Journal of Earthquake Engineering 11, no. 3 (May 21, 2007): 425–452. doi:10.1080/13632460601031813.

Wu, Yu-Fei, and You-Yi Wei. “Effect of Cross-Sectional Aspect Ratio on the Strength of CFRP-Confined Rectangular Concrete Columns.” Engineering Structures 32, no. 1 (January 2010): 32–45. doi:10.1016/j.engstruct.2009.08.012.

Osorio, E., J. M. Bairán, and A. R. Marí. "Effects of cyclic biaxial shear loading on the seismic response of RC columns." In Proceedings of 15th World Conference of Earthquake Engineering, Lisbon, Portugal. (2012).

P. Paultre, F. Legeron, and D. Mongeau, “Influence of Concrete Strength and Transverse Reinforcement Yield Strength on Behavior of High-Strength Concrete Columns.” ACI Structural Journal 98, no. 4 (2001). doi:10.14359/10292.

Ilki, Alper, Onder Peker, Emre Karamuk, Cem Demir, and Nahit Kumbasar. “FRP Retrofit of Low and Medium Strength Circular and Rectangular Reinforced Concrete Columns.” Journal of Materials in Civil Engineering 20, no. 2 (February 2008): 169–188. doi:10.1061/(asce)0899-1561(2008)20:2(169).

El Battawy, Osama Megahed, Khaled Farouk El Kashif, and Hany Ahmed Abdalla. “Experimentally Comparative Study on Different Strengthening Methods of Reinforced Concrete Deep Beams.” Civil Engineering Journal 5, no. 9 (September 23, 2019): 1997–2006. doi:10.28991/cej-2019-03091388.

Rafique, Nauman, Wasim Abbass, Safeer Abbas, and Ali Ahmed. “Feasibility of Textile Fabrics for Strengthening of Concrete Column.” Construction and Building Materials 259 (October 2020): 119684. doi:10.1016/j.conbuildmat.2020.119684.

Li, Qian, and Abdeldjelil Belarbi. “Damage Assessment of Square RC Bridge Columns Subjected to Torsion Combined with Axial Compression, Flexure, and Shear.” KSCE Journal of Civil Engineering 17, no. 3 (April 2013): 530–539. doi:10.1007/s12205-013-0600-x.

Cosenza, Edoardo, Carmine Galasso, and Giuseppe Maddaloni. “A Simplified Method for Flexural Capacity Assessment of Circular RC Cross-Sections.” Engineering Structures 33, no. 3 (March 2011): 942–946. doi:10.1016/j.engstruct.2010.12.015.

Mohammed, Ahmed Mohammed Youssef, and Koichi Maekawa. “Global and Local Impacts of Soil Confinement on RC Pile Nonlinearity.” Journal of Advanced Concrete Technology 10, no. 11 (November 22, 2012): 375–388. doi:10.3151/jact.10.375.

Maekawa, Koichi, Hajime Okamura, and Amorn Pimanmas. “Non-linear Mechanics of Reinforced Concrete.” CRC Press, (2003).

Jensen, Uffe G., Linh C. Hoang, Henrik B. Joergensen, and Lars S. Fabrin. “Shear Strength of Heavily Reinforced Concrete Members with Circular Cross Section.” Engineering Structures 32, no. 3 (March 2010): 617–626. doi:10.1016/j.engstruct.2009.11.008.

Mondal, Tarutal Ghosh, and S. Suriya Prakash. “Effect of Tension Stiffening on the Behaviour of Reinforced Concrete Circular Columns Under Torsion.” Engineering Structures 92 (June 2015): 186–195. doi:10.1016/j.engstruct.2015.03.018.

Prakash, Suriya, Abdeldjelil Belarbi, and Young-Min You. “Seismic Performance of Circular RC Columns Subjected to Axial Force, Bending, and Torsion with Low and Moderate Shear.” Engineering Structures 32, no. 1 (January 2010): 46–59. doi:10.1016/j.engstruct.2009.08.014.

JSCE, JSCE Guidelines for Concrete: Standard Specifications for Concrete Structures, 15th ed. Japan Society of Civil Engineers, (2007).

A. Ahmed, A. M. Y. Mohammed, and K. Maekawa, “Change of Behaviour of Circular and Square Columns with Different Amount of Corrosion and Reinforcement,” in The 10th fib International PhD Symposium in Civil Engineering, (2014): 523-528.

Mohammed, Ahmed Mohammed Youssef, Ali Ahmed, and Koichi Maekawa. “Performance Comparison of Circular and Square RC Columns under Monotonic Loading Conditions.” KSCE Journal of Civil Engineering 23, no. 1 (December 3, 2018): 210–216. doi:10.1007/s12205-018-0621-6.

Mohammed, Ahmed Mohammed Youssef, Ali Ahmed, and Koichi Maekawa. “Comparative Nonlinear Behavior of Corroded Circular and Square RC Columns.” KSCE Journal of Civil Engineering 24, no. 7 (June 5, 2020): 2110–2119. doi:10.1007/s12205-020-1730-6.


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DOI: 10.28991/cej-2021-03091639

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