Modeling Reinforced Concrete Beam with Reinforced Internal Failure by FRP and Comparing It with Laboratory Sample

Document Type : Original Article

Authors

1 Ph.D. Candidate, Faculty of Civil Engineering, Semnan University, Semnan, Iran

2 Associate Professor, Faculty of Civil Engineering, Semnan University, Semnan, Iran

Abstract

Diagnosing type and amount of deficits in beams and structure is highly important in terms of performance and impact. Despite of paramount studies on CFRP application, its usage as Strips can be mentioned as one of the most important ways. Using Half Scale in building structure and lab beams would provide more adducible results. Considering type of breakdown and its progress, the growth cracks on the surface of beams is different. In all constructions, the manner of implementation and the quality of materials are two important principles in terms of performance and efficiency of the structure. In present study, type breakdown in the beam of reinforce concrete is addressed in a nondestructive manner. In this technique, by using finite element method in identifying beam breakdown without creating an unstable condition, one can achieve a nondestructive situation in experiments which is significantly cost – effective. Hence, 16 250mm × 250mm × 2100mm concrete beams were built and divided into two groups with and without FRP composite. Each group has a control beam and remained samples have breakdown in concrete and rebar. Prepared beams were put in a 4 – point experiment and, upon gathering and analyzing relevant data, beams prototyping was begun. By using finite element method, all beams were prototyped in lab. The findings from prototyping and lab analyses are compared in the format of load – location change graph. One can consider the results of prototyping as a proper approximation of lab samples.

Keywords

Main Subjects

References

[1]  A. Godat, P. Labossière, K. W. Neale, and O. Chaallal, “Behavior of RC members strengthened in shear with EB FRP: Assessment of models and FE simulation approaches,” Comput. Struct., vol. 92–93, pp. 269–282, Feb. 2012, doi: 10.1016/j.compstruc.2011.10.018.
[2]  P. Carrara and D. Ferretti, “A finite-difference model with mixed interface laws for shear tests of FRP plates bonded to concrete,” Compos. Part B Eng., vol. 54, pp. 329–342, Nov. 2013, doi: 10.1016/j.compositesb.2013.05.030.
[3]  F. Minghini, N. Tullini, and F. Laudiero, “Buckling analysis of FRP pultruded frames using locking-free finite elements,” Thin-Walled Struct., vol. 46, no. 3, pp. 223–241, Mar. 2008, doi: 10.1016/j.tws.2007.09.001.
[4]  A. Hosseini and D. Mostofinejad, “Effect of groove characteristics on CFRP-to-concrete bond behavior of EBROG joints: Experimental study using particle image velocimetry (PIV),” Constr. Build. Mater., vol. 49, pp. 364–373, Dec. 2013, doi: 10.1016/j.conbuildmat.2013.08.036.
[5]  H. Amoushahi and M. Azhari, “Buckling of composite FRP structural plates using the complex finite strip method,” Compos. Struct., vol. 90, no. 1, pp. 92–99, Sep. 2009, doi: 10.1016/j.compstruct.2009.02.006.
[6]  M. Madqour and H. Hassan, “Experimental and analytical investigations of reinforced concrete beams strengthened by different CFRP sheet schemes.,” Frat. ed Integrità Strutt., vol. 15, no. 56, pp. 123–136, 2021.
[7]  G. Camata, E. Spacone, and R. Zarnic, “Experimental and nonlinear finite element studies of RC beams strengthened with FRP plates,” Compos. Part B Eng., vol. 38, no. 2, pp. 277–288, Mar. 2007, doi: 10.1016/j.compositesb.2005.12.003.
[8]  G. Milani, “3D FE limit analysis model for multi-layer masonry structures reinforced with FRP strips,” Int. J. Mech. Sci., vol. 52, no. 6, pp. 784–803, Jun. 2010, doi: 10.1016/j.ijmecsci.2010.01.004.
[9]  H. N. G. Al-Maliki, M. M. Abbass, and J. J. Al-kaabi, “Simulation Nonlinear of Structural Behavior of Hollow Reinforced Concrete Deep Beams Strengthened By CFRP.,” in IOP Conference Series: Materials Science and Engineering, 2020, vol. 928, no. 2, p. 22119.
[10]        J. G. Teng, S. S. Zhang, J. G. Dai, and J. F. Chen, “Three-dimensional meso-scale finite element modeling of bonded joints between a near-surface mounted FRP strip and concrete,” Comput. Struct., vol. 117, pp. 105–117, Feb. 2013, doi: 10.1016/j.compstruc.2012.12.002.
[11]        S. M. R. Khalili and B. Saboori, “Transient dynamic analysis of tapered FRP composite transmission poles using finite element method,” Compos. Struct., vol. 92, no. 2, pp. 275–283, Jan. 2010, doi: 10.1016/j.compstruct.2009.07.026.
[12]        X. Lin and Y. X. Zhang, “Bond–slip behaviour of FRP-reinforced concrete beams,” Constr. Build. Mater., vol. 44, pp. 110–117, Jul. 2013, doi: 10.1016/j.conbuildmat.2013.03.023.
[13]        A. Caggiano and D. Said Schicchi, “A thermo-mechanical interface model for simulating the bond behaviour of FRP strips glued to concrete substrates exposed to elevated temperature,” Eng. Struct., vol. 83, pp. 243–251, Jan. 2015, doi: 10.1016/j.engstruct.2014.10.017.
[14]        M. Z. Naser, R. A. Hawileh, and J. A. Abdalla, “Modeling Strategies of Finite Element Simulation of Reinforced Concrete Beams Strengthened with FRP: A Review,” J. Compos. Sci., vol. 5, no. 1, p. 19, 2021.
[15]        M. A. H. Hassanen and M. Raoof, “Design against premature peeling failure of RC beams with externally bonded steel or FRP plates,” Mag. Concr. Res., vol. 53, no. 4, pp. 251–262, Aug. 2001, doi: 10.1680/macr.2001.53.4.251.
[16]        R. de Borst, “Integration of plasticity equations for singular yield functions,” Comput. Struct., vol. 26, no. 5, pp. 823–829, Jan. 1987, doi: 10.1016/0045-7949(87)90032-0.
[17]        A. C. 318, “318-14: Building Code Requirements for Structural Concrete and Commentary,” p. 520, 2014.

Files

History

  • Receive Date: 24 October 2020
  • Revise Date: 25 April 2021
  • Accept Date: 07 May 2021

Share

How to cite

Statistics