EMRE ERCAN, BENGİ ARISOY, EMİN HÖKELEKLİ

Experimental and Numerical Analysis of a CFRP Strengthened Steel-Concrete Composite Beam

In this study, experimental and nonlinear finite element analysis of strengthened steel-concrete composite beams is presented. A steel-concrete composite beam is produced by using a steel beam and concrete slab bonded each other with shear connectors. Strengthening is applied by Carbon Fiber Reinforced Polymers (CFRP) sheets to the lower flange of the steel beam. Three samples are prepared, one of them is considered as a reference sample, the other two are strengthened by CFRP sheets with different number of layers. In experimental study, steel-concrete composite beams were tested by 4-point bending test with cyclic loading. During the test, load, deflection, and strain values are measured. Then 3D finite element models of the steel-concrete composite beams are prepared using tetrahedral elements. Finite element analysis is performed by using ATENA nonlinear analysis program. The results of experiments and finite element analysis are compared. Results indicated that the strengthened steel-concrete composite beams have larger moment capacity, lower deflection that the steel-concrete composite beam sample. Some evaluations are made on especially in terms of strength, applicability, stiffness and energy consumption about the steel-concrete composite beams with CFRP. Experimental results are found similar to the results obtained by nonlinear finite element method.

Anahtar Kelimeler:

CFRP, strengthened steel-composite beam, 4-point loading test, FEM

Experimental and Numerical Analysis of a CFRP Strengthened Steel-Concrete Composite Beam

Keywords:

CFRP, strengthened steel-composite beam, 4-point loading test, FEM,

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[1] Arda T.S. and Yardımcı N., “Çelik Yapıda Karma Elemanların Plastik Hesabı”, Birsen Yayınevi, İstanbul, (2000).
[2] “Çelik Yapıların Tasarım ve Yapım Kuralları”, Çevre ve Şehircilik Bakanlığı, Ankara, (2016).
[3] Price A.M. and Anderson D., “Const steel design Part 4”, Composite beams, Elsevier Applied Science, (1992).
[4] Tavakkolizadeh M. and Saadatmanesh H., “Strengthening of steel-concrete composite girders using carbon fiber reinforced polymers sheets”, Journal of Structural Engineering, ASCE 129(1): 30-40, (2003).
[5] Fam A., MacDougall C. and Shaat A., “Upgrading steel-concrete composite girders and repair of damaged steel beams using bonded CFRP laminates”, Thin-Walled Structures, 47(10): 1122-1135, (2009).
[6] Al-Saidy A.H., Klaiber F.W., Wipf T.J., AI-Jabri K.S. and AI-Nuaimi, A.S., “Parametric study on the behavior of short span composite bridge girders strengthened with carbon fiber reinforced polymer plates”, Construction and Building Materials, 22:729-737, (2008).
[7] Rizkalla S., Dawood M. and Schnerch D., “Development of a carbon fiber reinforced polymer system for strengthening steel structures”, Composites Part A: Applied Science and Manufacturing, 39(2): 388-397, (2008).
[8] Seleem M.H., Sharaky I.A. and Sallam H.E.M., “Flexural behavior of steel beams strengthened by carbon fiber reinforced polymer plates three dimensional finite element simulation”, Materials & Design, 31(3): 1317-24, (2010).
[9] Teng J. G., Fernando D. and Yu T., “Finite element modeling of bonding failures in steel beams flexural strengthened with CFRP laminates”, Engineering Structures, 86: 213-224, (2015).
[10] El-Shihy A.M., Fawzy H.M., Mustafa S.A. and El-Zohairy A.A., “Experimental and numerical analysis of composite beams strengthened by CFRP laminates in hogging moment region”, Steel and Composite Structures, 10(3): 281-295, (2010).
[11] Pecce M., Rossi F., Bibbò F.A. and Ceron F., “Experimental behavior of composite beams subjected to a hogging moment”, Steel and Composite Structures, 12(5): 395-412 395, (2012).
[12] Lin W., Yoda T.and Taniguchi N., “Fatigue tests on straight steel–concrete composite beams subjected to hogging moment”, Journal of Constructional Steel Research, 80: 42–56, (2013).
[13] Değerli A., “Bulonlar ile birleştirilmiş kompozit kirişlerin negatif moment bölgesindeki yapısal davranışları”, Master's Thesis, Sakarya University, Institute of Science and Technology, (2012).
[14] Ağcakoca E., and Aktaş M., “HM-CFRP ile güçlendirilmiş kompozit I-kirişlerde HM-CFRP’nin sıyrılmaması için faydalı mesafenin belirlenmesi”, E-Journal of New World Sciences Academy, 7(2): 47-59, (2012).
[15] Özyılmaz E.,” Karbon Lifler İle Güçlendirilmiş Kompozit Kirişlerin Eğilme Ve Kesme Kuvveti Altında Davranışlarının Deneysel Olarak İncelenmesi”, Master's Thesis, Ege University, Institute of Science and Technology, (2016).
[16] Erdoğan T.Y., “Beton”, Middle East Technican University Publishing, Ankara, Türkiye, (2013).
[17] TS 500, “Betonarme Yapıların Tasarım ve Yapım Kuralları, (2000).
[18] ATENA version 5.3, Červenka Consulting s.r.o., Prague, Czech Republic, 2016.
[19] Pryl D., and Červenka J., ATENA Program Documentation, Červenka Consulting s.r.o., Prague, Czech Republic, 2016.