Analysis of reinforced concrete deep beam strengthened by CFRP strips using ANSYS program

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    This paper presents the results of finite element analysis of strengthened reinforced concrete deep beams using the software package ANSYS 12.

    The work includes modeling seven reinforced concrete deep beams, same configuration have been considered with different strengthen-ing schemes. In order to find out the best strengthening mechanisms, the main variables considered in this work include the effect of fiber orientation (90° or 45° CFRP strips with respect to beam longitudinal axis), the effect of using longitudinal CFRP strips with transverse CFRP strips (90° or 45° CFRP strips) and effect of anchoring the transverse CFRP strips (90° or 45° CFRP strips).

    The analytical results were discussed based on shear resistance, mid span deflection. The results reveal that externally CFRP strips can significantly increase the ultimate shear resistance and increase the stiffness of the deep beams.


  • References


      [1] ACI Committee 318, "Building Code Requirements for Structural Concrete (ACI318M.11) and Commentary", by American Concrete Institute, Farmington Hills, Michigan, USA, pp. 473, 2011.

      [2] Ashour A. F. and Yang K. H., "Application of Plasticity Theory to Reinforced Concrete Deep Beams: A Review", by Magazine of Concrete Research, Vol. 60, No. 9, PP. 657- 664, November, 2008.

      [3] Mehdi Alizadehnozari, Hamidreza Sharifi, "FRP Composites Used in Structural", by American Journal of Scientific Research, 2011.

      [4] Khalifa, A., Gold, W., Nanni, A., and Abdel Aziz M. I., "Contribution of Externally Bonded FRP to Shear Capacity of RC Flexural Members", by Journal of Composite Construction, 2(4), pp. 195-202, 1998. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:4(195).

      [5] Raghu, H. A., "Shear Performance of RC Beams Strengthened in-situ with Composites", Msc Thesis, Dept. of Civil Engineering, University of Missouri-Rolla, Rolla, Mo, 2000.

      [6] Triantafillou, T. C., "Shear Strengthening of Reinforced Concrete Beams Using Epoxy-Bonded FRP Composites", by ACI Struct. J., 95(2), pp. 107-115, 1998.

      [7] Bilal, I. A., "Behavior of Reinforced Concrete Deep Beams Strengthened with Carbon Fiber Reinforced Polymer Strips", PhD Thesis, Dept. of Civil Engineering, College of Engineering, University of Baghdad, 2009.

      [8] ANSYS, "ANSYS User’s Manual Revision 12", ANSYS, Inc., Canonsburg, Pennsylvania, 2012.

      [9] Desayi P. and Krishnan S., "Equation for the Stress-Strain Curve of Concrete", by Journal of the American Concrete Institute, Vol. 61, No. 3, PP. 345-350, March, 1964.

      [10] Chen G. M., Chen J. F., Teng J. G., "On the Finite Element Modeling of RC Beams Shear Strengthened with FRP", by Journal of Construction and Building Material, 2010.

      [11] Bandara H. R. C. S., Gamage J. C. P. H., Aravinda M. D., and Weerakon S. D., "FE Modeling of CFRP Strengthened Concrete Beam Exposed to Cyclic Temperature, Humidity and Sustained Loading", by Civil Engineering Research for Industry , Department of Civil Engineering, University of Moratuwa, PP. 55-60, 2011.

      [12] Kachlakev, D., Yim, S., and Miller, T., "Finite Element Modeling of Reinforced Concrete Structures Strengthened with FRP Laminates", by Oregon Department of Transportation, Final Report SPR 316, Federal Highway Administration, Washington D.C, 2001.

      [13] Shadhan, K. K., "Behavior of Reinforced Concrete Beams Strengthening with CFRP Laminates", PhD Thesis, University of Babylon, 2008.


 

View

Download

Article ID: 21675
 
DOI: 10.14419/ijet.v7i4.21675




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.