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IJSTR >> Volume 3- Issue 10, October 2014 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Behavior Of Composite Girders Strengthened By CFRP Products

[Full Text]



Dr. Nameer A. Alwash, MajidAdhabJaber



Index Terms: Steel-Concrete Composite Construction, Composite Girders, CFRP laminates, CFRP bars, Finite Element Analysis..



Abstract: Composite structures are widely used in civil engineering projects. The present research consecrated to study the behavior of (steel-concrete) composite girders consisting from high strength concrete deck slab integrated with two steel I-beam by headed steel stud connectors. The present research implemented experimental and theoretical investigation. In the experimental investigation, five models were constructed as test samples. The test samples designed to be tested and failed in flexure. The dimensions of deck slab for each sample are (1000×2000×70mm: width×length×thickness), while the dimensions of each I-beam are (142×2000mm: depth×length).The test samples un-strengthened and strengthened externally by CFRP sheets with different manner and using and un-using CFRP bars instead of ordinary steel reinforcements.Theoretical investigation conducted by modeling the test samples numerically and analyzed using finite element method. The numerical models were carried out in three dimensions by software package (ANSYS 12.1, 2009). Verification of the numerical results was done by a comparison with experimental results. It is concluded that the strengthening of bottom face of concrete slab and bottom face of the bottom flanges of the steel beams by CFRP sheets increases the ultimate load values by (4%) but there is no considerable enhancement in the deflection and slip values. There is a slight structural advantage in case of using CFRP bars instead of ordinary steel bars reinforcements.



[1] H. W. Al-Thebhawi "Nonlinear Finite Element Analysis of Composite Steel-Concrete Beams". Ph.D. Thesis, University of Technology, 2005.

[2] S. S. Kadhim "Finite Element Analysis of Composite Concrete–Steel Arches up To Failure". M.Sc. Thesis, University of Tikrit, 2007.

[3] A. Y. Zainul-Abideen "Experimental and Theoretical Investigation of Composite Steel-Concrete Arches". Ph.D. Thesis, University of Technology, 2010.

[4] R. P. Johnson "Composite Structures of Steel and Concrete". Volume 1, 1994.

[5] D. A. Nethercot "Composite Construction", 2004.

[6] Cosenza, E. and Zandonini, R. "Composite construction". Structural Engineering Handbook, Ed. Chen Wai-Fah, Boca Raton: CRC Press LLC, 1999.

[7] S. Y. Al-Darzi and M. A. Al-Juboory "Investigation of Steel-Concrete Composite Beams with Different Types of Shear Connectors". Tikrit Journal of Engineering Sciences/Vol.20/No.3/March 2013, (32-40).

[8] G. Foretet. al. "Numerical and Experimental Analysis of Two-Way Slabs Strengthened with CFRP Strips". Journal of Engineering Structures 27, 2005.

[9] H. A. Jabir "Finite Element Analysis of Composite Concrete-Steel Girders under Static and Transient Loading". M.Sc. Thesis, University of Technology, 2006.

[10] K. Barth, H. Wu "Efficient Nonlinear Finite Element Modeling of Slab on Steel Stringer Bridges". Finite Element Analysis and Design 42, 2006.

[11] M. S. Bachachi "Nonlinear Analysis of Composite Concrete-Steel Beams under Bending Loads by Finite Element Method". M.Sc. Thesis, University of Technology, 2007.
[12] Mikhail et. al. "Flexural Behavior of Strengthened Steel-Concrete Composite Beams by Various Plating Methods". Journal of Constructional Steel Research 66, 2010.

[13] E. L. Tan, B. Uy "Nonlinear Analysis of Composite Beams Subjected to Combined Flexure and Torsion". Journal of Constructional Steel Research 67, 2011.

[14] ANSYS "ANSYS Help". Release 12.1, USA, 2009.