Fracture Mechanics Modeling of a Shear-Cracked RC Beams Shear-Strengthened with FRP Sheets
So far, the conventional experimental and theoretical analysis in fracture mechanics have been applied to study concrete flexural- cracked beams, which are strengthened using fiber reinforced polymer (FRP) composite sheets. However, there is still little knowledge about the shear capacity of a side face FRP- strengthened shear-cracked beam. A numerical analysis is herein presented to model the fracture mechanics of a four-point RC beam, with two inclined initial notch on the supports, which is strengthened with side face FRP sheets. In the present study, the shear crack is forced to conduct by using an initial notch in supports. The ABAQUS software is used to model crack propagation by conventional cohesive elements. It is observed that the FRP sheets play important roles in preventing the propagation of shear cracks.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1128153Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1048
 B. B. Adhikary, and H. Mutsuyoshi, “Behavior of Concrete Beams Strengthened in Shear with Carbon-Fiber Sheets,” Journal of Composites for Construction, ASCE, vol. 8, no.4, pp. 258-264 2004.
 S. Shahbazpanahi, A. A. A. Ali, F. N Aznieta, A. Kamgar, and N. Farzadnia, “A simple and practical model for FRP-reinforced cracked beam. European Journal of Environmental and Civil Engineering, vol. 18, no.3, pp. 293-306, 2013.
 S. Shahbazpanahi, and A. Kamgar, “A novel numerical model of debonding of FRP-plated concrete beam,” Journal of the Chinese Institute of Engineers, In Press, 2014.
 D. Baggio, Soudki, K., and M. Noel, “Strengthening of shear critical RC beams with various FRP systems,” Construction and Building Materials, vol. 66, no.15, pp. 634-644, 2014.
 G. M. Chen, J. F. Chen, and J. G. Teng, “On the finite element modelling of RC beams shear-strengthened with FRP,” Construction and Building Materials, vol. 47, pp. 13-26, 2012.
 I. A. Bukhari, R. Vollum, S. Ahmad, and J. Sagaseta, “Shear strengthening of short span reinforced concrete beams with CFRP sheets,”, vol. 38, no. 3, 523-536, 2013.
 S. Shahbazpanahi, A. A. A. Abang, F. Aznieta, A. Kamgar, and N. Farzadnai, “A theoretical method for fracture resistance of shear strengthened RC beams with FRP,” In Press, 2014.
 D. Zhang, and K. Wu, “Fracture process zone of notched three-point-bending concrete beams,” Cement and Concrete Research, vol. 29, no. 12, pp. 1887-1892, 1999.
 X. Guo, R. Su, and B. Young, “Numerical Investigation of the Bilinear Softening Law in the Cohesive Crack Model for Normal-Strength and High-Strength Concrete,” Advances in Structural Engineering, vol. 15, no. 3, pp. 373-388, 2012.
 Z. J. Yang, and j. Chen, “Finite element modelling of multiple cohesive discrete crack propagation in reinforced concrete beams,” Engineering Fracture Mechanics, vol. 72, no. 14, 2280-2297(2005).
 E. T. Ooi, and Z. J. Yang, “Modelling crack propagation in reinforced concrete using a hybrid finite element–scaled boundary finite element method,” Engineering Fracture Mechanics, vol. 78, pp. 252-273, 2011.
 A. Hillerborg, M. Modeer, and P. E. Petersson, “Analysis of crack formation and crack growth in concrete by means of mechanics and finite element,” Cement and Concrete Research, vol. 6, pp. 773-782, 1976.
 S. Shabazpanahi, A. A. A. Abang, F. N. Aznieta, A. Kamgar, and N. Farzadnia, “A simple method to model crack propagation in concrete,” Constructii Journa, vol. 13, no. 1, pp. 41-50, 2012.
 N. Sagaresan, “Modeling fracture of concrete with a simplified meshless discrete crack method,” KSCE Journal of Civil Engineering, vol. 16, no. 3, pp. 417-425, 2012.
 S. Shahbazpanahi, A. A. A. Ali, F. N. Aznieta, A. Kamkar, and N. Farzadnia, “Modelling of the fracture process zone to improve the crack propagation criterion in concrete,” Journal of the South African Institution of Civil Engineering, vol. 55, no. 3, pp. 2-9, 2013 .
 S. Shahbazpanahi, A. A. A. Abang, A. Kamgar and N. Farzadnia, “Fracture mechanic modeling of fiber reinforced polymer shear-strengthened reinforced concrete beam,” Composites: Part B, vol. 68, pp. 113-120, 2014.
 K. Nakaba, K. Kanakubo, T. Furuta, and K. Yoshizawa, “Bond behavior between fiber reinforced polymer laminates and concrete,” Structural Journal, ACI, vol. 98, pp. 359-367, 2001.
 A. S. Mosallam and S. Banerjee, “Shear enhancement of reinforced concrete beams strengthened with FRP composite laminates,” Composites: Part B, vol. 38, no. 6, pp. 781-793, 2007.
 ACI Committee, 440.2R-02. “Guide for the design and construction of externally bonded FRP systems for strengthening concrete structures,” American Concrete Institute, 2003.
 V. Colotti, G. Spadea, and R. Swamy, “Analytical model to evaluate failure behavior of plated reinforced concrete beams strengthened for shear,” Structur Journal, ACI, vol. 101, no. 6, pp. 755-64, 2004.
 S. Matthys and T. C. Triantafillou, “Shear and torsion strengthening with externally bonded FRP reinforcement,” In Proceedings of the international workshop on composite in construction, Capri, Italy, pp. 20-21, 2001.