Horizontal Web Reinforcement Configuration Analysis of Deep Beam Capacity and Behavior using Finite Element Modeling

A. Y. Pranata, D. Tjitradi, I. Prasetia

Abstract


A deep beam is a beam with a small ratio of its shear span to its effective depth. Deep beams at failure under shear mechanism behave as brittle in contrast to the normal beams which become ductile under the flexural mechanism. The shear failure of deeps beams can be prevented by providing a sufficient amount of web shear reinforcements. Providing horizontal web reinforcement to the RC deep beams is a way to increase their capacity to shear. Testing of the studied deep beams was performed by Finite Element Method (FEM) modeling with the aid of ANSYS software. To obtain valid parameters for modeling RC deep beams in FEM modeling, calibrating test have to be done through verification and validation processes. The study results of all studied RC deep beams show that by closing up the spacing between the horizontal web reinforcement results in increment in the ultimate load, while the ultimate deflection and the curvature ductility were found to be decreasing. For RC deep beams, the placing configuration of horizontal web reinforcement at 0.5h-0.7h was found to be efficient for gaining higher values of ultimate deflection and curvature ductility compared to the placing configuration at 0.3h-0.5h with similar values of ultimate load. It was also found that all the specimens’ crack patterns at the first crack state were caused by flexural-tension while at the ultimate state, they were caused by the shear mechanism.


Keywords


deep beam; horizontal web reinforcement; capacity; behavior; FEM

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References


G. Aguilar, A. B. Matamoros, G. J. Parra-Montesinos, J. A. Ramirez, J. K. Wight, “Experimental evaluation of design procedures for shear strength of deep reinforced concrete beams”, ACI Structural Journal, Technical Paper No. 99S56, pp. 539–548, 2003

A. Arabzadeh, R. Aghayari, A. R. Rahai, “Investigation of experimental and analytical shear strength of reinforced concrete deep beams”, International Journal of Civil Engineering, Vol. 9, No. 3, pp. 207–214, 2011

J. D. D. Garay-Moran, A. S. Lubell, “Behavior of deep beams containing high-strength longitudinal reinforcement”, ACI Structural Journal, Vol. 113, No. 1, pp. 17–28, 2016

O. Q. Aziz, M. A. Ihsan, S. A. Yaseen, “Shear strength comparison of high performance reinforced concrete deep beams without stirrups between ANSYS vs experimental work”, ZANCO Journal of Pure and Applied Sciences, Vol. 30, No. 1, pp. 73–84, 2018

S. S. Patil, A. N. Shaikh, B. R. Niranjan, “Experimental and analytical study on reinforced concrete deep beam”, International Journal of Mordern Engineering Research, Vol. 3, No. 1, pp. 45–52, 2013

E. Rommel, “Pengaruh jumlah tulangan bagi dan arah sengkang pada kemampuan geser balok tinggi”, Jurnal Teknik Gelagar, Vol. 17, No. 1, pp. 17–25, 2006 (in Indonesian)

E. Rommel, “Pemakaian perkuatan geser Longitudinal sebagai upaya peningkatan kapasitas balok tinggi beton bertulang”, Jurnal Teknik Sipil, Vol. 13, No. 2, 2008 (in Indonesian)

N. C. E. Yuliati, “Perilaku dan peningkatan kapasitas balok tinggi akibat perubahan rasio bentang geser terhadap tinggi efektif balok (a/d)”, Dinamika Teknik Sipil, Vol. 7, No. 1, pp. 30–36, 2007 (in Indonesian)

K. Mohamed, A. S. Farghaly, B. Benmokrane, “Effect of web reinforcement in FRP-reinforced deep beams”, The 7th International Conference on FRP Composites in Civil Engineering, Vancouver, Canada, August 20-22, 2014

O. Q. Aziz, S. A. Yaseen, “Effect of type and position of shear reinforcement of high-strength reinforced concrete deep beams”, Al-Rafidan Engineering, Vol. 21, No. 5, pp. 69–79, 2013

M. A. Ihsan, O. Q. Aziz, S. A. Yaseen, “Shear strength prediction of high performance reinforced concrete deep beams with stirrups by ANSYS”, Eurasian Journal of Science and Engineering, Vol. 3, No. 1, pp. 212–221, 2017

D. Kachlakev, T. Miller, S. Yim, K. Chansawat, T. Potisuk, Finite Element Modeling of reinforced concrete structures strengthened with FRP laminates, Final Report SPR 316, Oregon Department of Transportation, 2001

A. J. Wolanski, Flexural behavior of reinforced and prestressed concrete beams using Finite Element analysis, BSc Thesis, Marquette University, 2004

D. Tjitradi, E. Eliatun, S. Taufik, “3D ANSYS numerical modeling of reinforced concrete beam behavior under different collapsed mechanisms”, International Journal of Mechanics and Applications, Vol. 7, No. 1, pp. 14–23, 2017

S. Popovics, “A numerical approach to the complete stress-strain curve of concrete”, Cement and Concrete Research, Vol. 3, No. 5, pp. 583–599, 1973

R. L. Carrasquillo, A. H. Nilson, F. O. Slate, “Properties of high-strength concrete subject to short-term loads”, Journal of the American Concrete Institute, Vol. 78, No. 3, pp. 171–178, 1964

S. Joshi, S. Paul, B. Balakrishnan, D. Menon, “Moment curvature relation of reinforced concrete T-beam sections: Numerical and experimental studies”, Third International Conference on Advances in Civil, Structural and Construction Engineering, Rome, Italy, December 10-11, 2015




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