Behaviour of Reinforced Concrete Beams With Circular Transverse Openings Under Static Loads
DOI:
https://doi.org/10.31328/jsae.v3i1.1288Keywords:
Reinforced Concrete Beam, Circular Transverse Opening, Flexural and Shear LoadAbstract
Transverse opening in a reinforced concrete beam allows the crossing of mechanical and electrical services through the beam. However, it affects the strength of a beam. Understanding its structural behaviour is crucial to ensure a safe design of the beam. For that, an experimental study was carried out on reinforced concrete beams with circular transverse openings. The four-point load test was conducted to study the effects of the size and the position of the opening on the beam performance under the shear and flexural loads. In addition, three reinforcing methods for the opening were tested. The beams were evaluated in terms of the load-displacement responses, mechanical properties, deflections, and failure modes. The opening with the diameter not exceeding 0.25 times beam height affected about 20% of beam strength (without reinforcements at the opening). The diagonal bar reinforcing method effectively restored the beam strength for the opening size not exceeding 1/3 of beam height. The equation model proposed conservatively predicted the ultimate capacity of the beam with a transverse opening.References
S. C. Chin, N. Shafiq, and M. F. Nuruddin, “Strengthening of RC beams containing large opening at flexure with CFRP laminatesâ€, World Academy of Science and Technology, vol. 60, pp. 12-25, 2011.
L. Herrera, S. Anacleto-Lupianez, and A. Lemnitzer, “Experimental performance of RC moment frame beams with rectangular openingsâ€, Engineering Structures, vol. 152, pp. 149-167, 2017.
A. Ahmed, M. M. Fayyadh, S. Naganathan, and K. Nasharuddin, “Reinforced concrete beams with web openings: A state of the art reviewâ€, Materials & Design, vol. 40, pp. 90-102, 2012.
S. C. Chin, N. Shafiq, and M. F. Nuruddin, “FRP as strengthening material for reinforced concrete beams with openings - A reviewâ€, KSCE Journal of Civil Engineering, vol. 19(1), pp. 213-219, 2015.
B. H. Osman, E. Wu, B. Ji, and A. M. S. Abdelgader, “A state of the art review on reinforced concrete beams with openings retrofitted with FRPâ€, International Journal of Advanced Structural Engineering, vol. 8(3), pp. 253-267, 2016.
K. J. Jithinbose, J. Thomas, and N. B. Parappattu, “Effect of openings in beams - a reviewâ€, International Journal of Innovative Research in Advanced Engineering (IJIRAE), vol. 3(9), pp. 15-19, 2016.
M. S. Latha, and B. M. Naveen Kumar, “Behavior of reinforced concrete beam with openingâ€, International Journal of Civil Engineering and Technology (IJCIET) 8(7) (2017) 581-593.
A. El-kareim Shoeib, and A. El-sayed Sedawy, “Shear strength reduction due to introduced opening in loaded RC beamsâ€, Journal of Building Engineering, vol. 13, pp. 28-40, 2017.
S. B. Kudatini, and H. Eramma, “Experimental investigation on internally strengthened RC beam with rectangular web openingâ€, International Journal of Innovative Research in Science, Engineering and Technology, vol. 5(8), pp. 15410-15417, 2016.
S. Amiri, and R. Masoudnia, “Investigation of the opening effects on the behavior of concrete beams without additional reinforcement in opening region using fem methodâ€, Australian Journal of Basic and Applied Sciences, vol. 5(5), 617-627, 2011.
R. B. Hafiz, S. Ahmed, S. Barua, and S. Chowdhury, “Effects of opening on the behavior of reinforced concrete beamâ€, IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), vol. 11(2), pp. 52-61, 2014.
N. H. Saksena, and P. G. patel, “Experimental study of reinforced concrete beam with web openingsâ€, International Journal of Advanced Engineering Research and Studies, vol. 2(3), pp. 66-68, 2013.
S. Amiri, R. Masoudnia, and A. Akbar Pabarja, “The study of the effects of web openings on the concrete beamsâ€, Australian Journal of Basic and Applied Sciences, vol. 5(7), 547-556, 2011.
J. H. Ling, H. S. Tang, W. K. Leong, and H. T. Sia, “Effects of transverse circular opening in reinforced concrete beam subjected to incremental static loadâ€, Borneo Journal of Sciences and Technology, vol. 1(2), pg 16-26, 2019.
M. Tariq, “Shear behaviour of rc deep beams with openings strengthened with carbon fiber reinforced polymerâ€, Internation Scholarly and Scientific Research & Innovation, vol. 11(8), pp. 1138-1143, 2017.
S. Chutani, and D. Joshi, “Evaluation of ultimate strength of reinforced concrete deep beams with web openingsâ€, International Journal of Research in Engineering and Social Sciences (IJRESS), vol. 7(5), pp. 19-25, 2016.
A. R. Mohamed, M. S. Shoukry, and J. M. Saeed, “Prediction of the behavior of reinforced concrete deep beams with web openings using the finite element methodâ€, Alexandria Engineering Journal, vol. 53(2), pp. 329-339, 2014.
T. M. Yoo, J. H. Doh, H. Guan, and S. Fragomeni, “Experimental behaviour of high-strength concrete deep beams with web openingsâ€, The Structural Design of Tall and Special Buildings 22(8), pp. 655-676, 2013.
R. A. Hawileh, T. A. El-Maaddawy, and M. Z. Naser, “Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded compositesâ€, Materials & Design, vol. 42, pp. 378-387, 2012.
G. Campione, and G. Minafò, “Behaviour of concrete deep beams with openings and low shear span-to-depth ratioâ€, Engineering Structures, vol. 41, pp. 294-306, 2012.
H. Guan, and J. H. Doh, “Development of strut-and-tie models in deep beams with web openingsâ€, Advances in Structural Engineering, vol. 10(6), pp. 697-711, 2007.
K. H. Yang, H. C. Eun, and H. S. Chung, “The influence of web openings on the structural behavior of reinforced high-strength concrete deep beamsâ€, Engineering Structures, vol. 28(13), pp. 1825-1834, 2006.
H. C. Eun, Y. H. Lee, H. S. Chung, and K. H. Yang, “On the shear strength of reinforced concrete deep beam with web openingâ€, The Structural Design of Tall and Special Buildings, vol. 15(4), pp. 445-466, 2006.
H. Guan, “Strut-and-tie model of deep beams with web openings - an optimisation approachâ€, Structural Engineering and Mechanics, vol. 19(4), pp. 361-379, 2005.
N. E. Shanmugam, and S. Swaddiwudhipong, “Strength of fibre reinforced concrete deep beams containing openingsâ€, International Journal of Cement Composites and Lightweight Concrete, vol. 10(1), pp. 53-60, 1988.
M. A. Mansur, and W. A. M. Alwis, “Reinforced fibre concrete deep beams with web openingsâ€, International Journal of Cement Composites and Lightweight Concrete, vol. 6(4), pp. 263-271, 1984.
F. K. Kong, G. R. Sharp, S. C. Appleton, C. J. Beaumont, and L. A. Kubik, “Structural idealization for deep beams with web openings: further evidenceâ€, Magazine of Concrete Research, vol. 30(103), pp. 89-95, 1978.
J. A. Saeed, and A. R. Yousif, “Tests of fibrous and nonfibrous reinforced concrete continuous deep beams with web openingsâ€, Journal of Zankoy Sulaimani, vol. 15(2), vol. 1-20, 2013.
J. K. Lee, C. G. Li, Y. T. Lee, “Experimental study on shear strength of reinforced concrete continuous deep beams with web openingâ€, 14th World Conference on Earthquake Engineering, Beijing, China, 2008.
L. Herrera, and A. Lemnitzer, “Cyclic performance of rc beams with web openingsâ€, 2nd European Conference on Earthquake Engineering and Seismology, Istanbul, 2014.
N. K. Oukaili, and A. H. Al-Shammari, “CFRP Strengthening of RC beams with multiple openings subjected to static and impact loadsâ€, Advances in Structural Engineering, vol. 17(12), pp. 1747-1760, 2014.
J. Tanijaya, “Shear stress distribution in the opening chords of hybrid r/c t-beams with openingâ€, MATEC Web Conf., vol. 147, pp. 01005, 2018.
A. E. Salama, M. E. Kassem, and A. A. Mahmoud, “Torsional behavior of T- shaped reinforced concrete beams with large web openingsâ€, Journal of Building Engineering, vol. 18, 84-94, 2018.
X. F. Nie, S. S. Zhang, J. G. Teng, and G. M. Chen, “Experimental study on RC T-section beams with an FRP-strengthened web openingâ€, Composite Structures, vol. 185, pp. 273-285, 2018.
S. Vuggumudi, “Experimental study on shear strengthening of RC T-beams with web openings using FRP compositesâ€, National Institute Of Technology, Rourkela, India, p. 122, 2013.
M.A. Mansur, “Design of reinforced concrete beams with web openingsâ€, 6th Asia-Pacific Structural Engineering and Construction Conference (APSEC 2006), Kuala Lumpur, Malaysia, pp. 104-120, 2006.
A. Yaser, and S. Hemzah, “Nonlinear analysis for behavior of RC horizontally curved ring beams with openings and strengthened by CFRP laminatesâ€, Jordan Journal of Civil Engineering, vol. 8(4) pp. 482-493, 2014.
A. Yaser, and S. Hemzah, “Nonlinear analysis for behavior of R.C. horizontally semicircular curved beams with openings and strengthened by CFRP laminatesâ€, International Journal of Innovative Research in Advanced Engineering (IJIRAE), vol. 3(9), pp. 15-19, 2014.
S.A. Hemzah, “Behavior of R. C. horizontally curved beams with openings strengthened by CFRP laminatesâ€, College of Engineering, Babylon University, Iraq, 2014.
K. Fawzy, “Strengthening of opening R. C. beams in shear using bonded external reinforcementsâ€, International Journal of Engineering Science and Innovative Technology (IJESIT), vol. 4(2), pp. 11-23, 2015.
S. A. Al-Sheikh, “Flexural behavior of RC beams with openingâ€, Concrete Research Letters, vol. 5(2), pp. 812-824, 2014.
A. M. Mahmoud, “Strengthening of concrete beams having shear zone openings using orthotropic CFRP modelingâ€, Ain Shams Engineering Journal, vol. 3(3), pp. 177-190, 2012.
J. Vaseghi Amiri, and M. Hosseinalibygie, “Effect of small circular opening on the shear and flextural behavior and ultimate strength of reinforced concrete beams using normal and high strength concrete, 13th World Conference on Earthquake Engineering (WCEE), Vancouver, B.C., Canada 2004.
M.A. Mansur, “Effect of openings on the behaviour and strength of R/C beams in shearâ€, Cement and Concrete Composites, vol. 20(6) pp. 477-486, 1998.
S. R. R. Saripalli, “Study on torsional behaviour of retrofitted rectangular RC beams with web openingsâ€, India, National Institute of Technology, Rourkela, p. 46, 2015.
M. Venugopal, “Behaviour of GFRP retrofitted rectangular RC beams with small web openings under torsion: experimental studyâ€, Department of Civil Engineering, National Institute of Technology, Rourkela, India, 2014.
B. Aykac, I. Kalkan, S. Aykac, and Y. E. Egriboz, “Flexural behavior of RC beams with regular square or circular web openingsâ€, Engineering Structures, vol. 56, pp. 2165-2174, 2013.
S. Mamatha, N. Changler, P. Singore, S. S. Jevoora, and L. Geetha, “The study of behavior of RC beam with transverse opening under static load, International Journal of Engineering Science and Computing, vol. 7(6), pp. 13480-13484, 2017.
B. H. Osman, E. Wu, B. Ji, and S.S. Abdulhameed, “Shear behavior of reinforced concrete (RC) beams with circular web openings without additional shear reinforcementâ€, KSCE Journal of Civil Engineering, vol. 21(1), pp. 296-306, 2016.
T. El Maaddawy, and S. Sherif, “FRP composites for shear strengthening of reinforced concrete deep beams with openingsâ€, Composite Structures, vol. 89(1), pp. 60-69, 2009.
M. A. Mansur, K. H. Tan, “Concrete beams with openings: analysis and designâ€, Taylor & Francis 1999.
N. F. Somes, and W. G. Corley, “Circular openings in webs of continuous beamsâ€, Special Publication, vol. 42, 1974.
M. R. Osman, K. Metwally, M. S. Wafaa, “Proposed recommendations for the design of reinforced concrete beams with openingsâ€, The 2015 World Congress on Advances in Structural Engineering and Mechanics (ASEM15), Incheon, Korea, 2015.
H. Abdalla, A. M. Torkey, H. A. Haggag, A. F. Abu-Amira, “Design against cracking at openings in reinforced concrete beams strengthened with composite sheetsâ€, Composite Structures, vol. 60, pp. 197-204, 2003.
E. G. Prentzas, “Behaviour and reinforcement of concrete beams with large rectangular aperturesâ€, University of Sheffield, 1968.
ACI-318-14, “Building code requirements for structural concrete and commentaryâ€, American Concrete Institute Farmington Hills MI, 2014.
R. Park, “Ductility evaluation from laboratory and analytical testingâ€, The 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, Japan, pp. 605-616, 1988.
A. Noushini, B. Samali, and K. Vessalas, “Performance of concrete beam elements reinforced with polyvinyl alcohol (PVA) micro fibresâ€, Concrete in Australia, vol. 40(1), pp. 22-27, 2014.
B. H. Osman, E. Wu, B. Ji, and S.S. Abdulhameed, “Repair of pre-cracked reinforced concrete (RC) beams with openings strengthened using FRP sheets under sustained loadâ€, International Journal of Concrete Structures and Materials, vol. 11(1), pp. 171-183, 2017.
