Abstract
Coupling beams are utilized in shear walls to connect one shear wall to another. A high amount of reinforcement is required in these beams to resist the forces developed during a seismic event. Generally, the main reinforcements in a coupling beam are provided in a diagonal manner but due to the high reinforcement content, the constructability and construction time management becomes an issue. Past earthquakes and experimental studies on coupling beams have shown that these members are subjected to high shear forces and it becomes imperative that the members should have adequate shear reinforcement. To reduce the reinforcement concentration and enhance the ductility of coupling beam, an experiment was conducted on two coupling beam specimens, (a) reinforced concrete specimen with the double-beam-type reinforcement arrangement, and (b) steel fiber-reinforced concrete specimen with again the double-beam-type reinforcement arrangement. Both beams were geometrically identical and were subjected to a reversed-cyclic loading up to 6% lateral drift. The steel fiber-reinforced concrete specimen showed higher resistance than the reinforced concrete specimen. The failure patterns observed in steel fiber-reinforced specimen showed distributed microcracks, whereas the reinforced concrete specimen showed wider and fewer numbers of cracks.
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References
Paulay, T. (1971). Coupling beams of reinforced concrete shear walls. Journal of the Structural Division, ASCE, 97(ST3), 843–861.
Paulay, T., & Binney, J. R. (1974). Diagonally reinforced coupling beams of shear walls. Shear in Reinforced Concrete American Concrete Institute Structural Journal, SP-42, 579–598.
Shiu, K. N., Barney, G. B., Fiorato, A. E., & Corley, W. G. (1978). Reversing load tests of reinforced concrete coupling beams. In Central American Conference on Earthquake Engineering—Conferencia Centroamericana de Ingenieria Siemica, pp. 239–249.
Galano, L., & Vignoli, A. (2000). Seismic behavior of short coupling beams with different reinforcement layouts. American Concrete Institute Structural Journal, 97(6), 876–885.
Fortney, P. J., Rassati, G. A., & Shahrooz, B. M. (2008). Investigation on effect of transverse reinforcement on performance of diagonally reinforced coupling beams. American Concrete Institute Structural Journal, 105(6), 781–788.
Harries, K. A., Gong, B., & Shahrooz, B. M. (2000). Behavior and design of reinforced concrete, steel, and steel-concrete coupling beams. Earthquake Spectra, 16(4), 775–799.
Hajyalikhani, P., & Chao, S. H. (2014). Experimental study on seismic performance of reinforced concrete coupling beams with double beam reinforcement layout. In Tenth U.S. National Conference on Earthquake Engineering, pp. 21–25.
Canbolat, B. A., Parra-Montesinos, G. J., & Wight, J. K. (2005). Experimental study on seismic behavior of high-performance fiber-reinforced cement composite coupling beams. American Concrete Institute Structural Journal, 102(1), 159–166.
Lequesne, R., Parra-Montesinos, G., & Wight, J. K. (2013). Seismic behavior and detailing of high-performance fiber-reinforced concrete coupling beams and coupled wall systems. Journal of Structural Engineering, 139(SP-2), 1362–1370.
IS:10262. (2009). Concrete mix proportioning-guidelines. New Delhi: Indian Standard.
ACI 318-08. (2008). Building code requirements for structural concrete and commentary. Farmington Hills, MI: American Concrete Institute.
Sahoo, D. R., & Sharma, A. (2014). Effect of steel fiber content on behavior on concrete beams with and without shear stirrups. American Concrete Institute Structural Journal, 111(5), 1157–1166.
Oinam, R. M., Sahoo, D. R., & Sindhu, R. (2014). Cyclic response of non-ductile rc frame with steel fibers at beam-column joints and plastic hinge regions. Journal of Earthquake Engineering, 18(6), 908–928.
Chao, S. H., Pareek, T., & Sahoo, D. R. (2011). Effect of fiber reinforced concrete in members with highly-complex stress fields. In High Performance Fiber Reinforced Cement Composites (HPFRCC 6), International Workshop, June 20–22, pp. 213–220, Ann Arbor, MI.
Sahoo, D. R., Flores, C. A., & Chao, S. H. (2012). Behavior of steel fibers reinforced concrete deep beams with openings. American Concrete Institute Structural Journal, 109(2), 193–204.
Sahoo, D. R., & Chao, S. H. (2010). Use of steel fiber reinforced concrete for enhanced performance of deep beams with large opening. In ASCE Structural Congress/North American Steel Construction Conference (NASCC). September 22–25, pp. 1981–1990, Orland, Florida.
Sahoo, D. R., Maran, K., & Kumar, A. (2015). Effect of steel and synthetic fibers on shear strength of RC beams without shear stirrups. Construction and Building Materials, 83, 150–158.
ACI, Committee, 374.1-05. (2006). Acceptance criteria for moment frames based on structural testing and commentary—An ACI standara. Farmington Hills, MI: American Concrete Institute.
FEMA 356. (2000). Prestandard and commentary for the seismic rehabilitation of buildings. Washington, D. C.: Federal Emergency Management Agency.
Acknowledgements
The authors are thankful to the Structural Engineering laboratory staffs of the Department of Civil Engineering, IIT Delhi for their help in casting and testing of specimens.
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Oinam, R.M., Ashwin Kumar, P.C., Sahoo, D.R., Maran, K. (2019). Cyclic Behavior of Retrofitted-Reinforced Concrete Coupling Beams. In: Rao, A., Ramanjaneyulu, K. (eds) Recent Advances in Structural Engineering, Volume 1. Lecture Notes in Civil Engineering , vol 11. Springer, Singapore. https://doi.org/10.1007/978-981-13-0362-3_84
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DOI: https://doi.org/10.1007/978-981-13-0362-3_84
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