Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

Hawileh, Rami A.; El‐Maaddawy, Tamer; Naser, M.Z.

doi:10.1016/j.matdes.2012.06.004

Cited by 74 publications

(44 citation statements)

References 23 publications

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“…Due to sudden changes presented in the cross section of the beam, the opening edges are, for the most part, subjected to high stress concentrations, which inadvertently leads to induced transverse cracks in the beam; resulting in a significant reduction in the beam shear capacity and stiffness (Mansur 1998;Mansur et al 1999;Yang et al 2006). The external bonding of different materials, such as high-strength fiber reinforced plastics (FRP) or steel plates, has gained wide popularity in recent years to strengthen the RC structural (Hawileh et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Repair of Pre-cracked Reinforced Concrete (RC) Beams with Openings Strengthened Using FRP Sheets Under Sustained Load

Osman

et al. 2017

Int J Concr Struct Mater

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Strengthening reinforced concrete (RC) beams with openings by using aramid fiber reinforcement polymers (AFRP) on the beams' surfaces offers a useful solution for upgrading concrete structures to carry heavy loads. This paper presents a repairing technique of the AFRP sheets that effectively strengthens RC beams, controls both the failure modes and the stress distribution around the beam chords and enhances the serviceability (deflection produced under working loads be sufficiently small and cracking be controlled) of pre-cracked RC beams with openings. To investigate the possible damage that was caused by the service load and to simulate the structure behavior in the site, a comprehensive experimental study was performed. Two unstrengthened control beams, four beams that were pre-cracked before the application of the AFRP sheets and one beam that was strengthened without pre-cracking were tested. Cracking was first induced, followed by repair using various orientations of AFRP sheets, and then the beams were tested to failure. This load was kept constant during the strengthening process. The results show that both the preexisting damage level and the FRP orientation have a significant effect on strengthening effectiveness and failure mode. All of the strengthened specimens exhibited higher capacities with capacity enhancements ranging from 21.8 to 66.4%, and the crack width reduced by 25.6-82.7% at failure load compared to the control beam. Finally, the authors present a comparison between the experimental results and the predictions using the ACI 440.2R-08 guidelines.

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Section: Introductionmentioning

confidence: 99%

Repair of Pre-cracked Reinforced Concrete (RC) Beams with Openings Strengthened Using FRP Sheets Under Sustained Load

Osman

et al. 2017

Int J Concr Struct Mater

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“…Many experimental programs and numerical studies investigated different strengthening techniques in which multiple arrangements of FRP plates and sheets were used [10][11][12][13][14][15][16][17][18][19]. Among them, Akbarzadeh and Maghsoudi [10] experimentally investigated the performance of continuous high-strength reinforced concrete beams externally strengthened with CFRP and GFRP sheets.…”

Section: Introductionmentioning

confidence: 99%

Behavior of reinforced concrete beams strengthened with externally bonded hybrid fiber reinforced polymer systems

et al. 2014

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“…1) [7,[10][11][12]14,15,[17][18][19][20][21][22][23]25,[27][28][29][30][31][32]. Some elements of notation system is presented at Fig.…”

Section: Formulation Of the Problemmentioning

confidence: 99%

About solution of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element method. part 1: formulation of the problem and general principles of approximation

Lyakhovich

Negrozov

2017

MATEC Web Conf.

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Abstract. This paper is devoted to formulation and general principles of approximation of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method (FEM) discrete-continual finite element method (DCFEM). The field of application of DCFEM comprises structures with regular physical and geometrical parameters in some dimension ("basic" dimension). DCFEM presupposes finite element approximation for non-basic dimension while in the basic dimension problem remains continual. DCFEM is based on analytical solutions of resulting multipoint boundary problems for systems of ordinary differential equations with piecewise-constant coefficients.

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Nonlinear finite element modeling of concrete deep beams with openings strengthened with externally-bonded composites

Cited by 74 publications

References 23 publications

Repair of Pre-cracked Reinforced Concrete (RC) Beams with Openings Strengthened Using FRP Sheets Under Sustained Load

Repair of Pre-cracked Reinforced Concrete (RC) Beams with Openings Strengthened Using FRP Sheets Under Sustained Load

Behavior of reinforced concrete beams strengthened with externally bonded hybrid fiber reinforced polymer systems

About solution of multipoint boundary problem of static analysis of deep beam with the use of combined application of finite element method and discrete-continual finite element method. part 1: formulation of the problem and general principles of approximation

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