Numerical Investigation of Fiber Reinforced Polymers Poststrengthened Concrete Slabs

Hörmann, M.; Menrath, H; Ramm, Ekkehard

doi:10.1061/(asce)0733-9399(2002)128:5(552)

Cited by 7 publications

(5 citation statements)

References 12 publications

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“…A similar approach has already been followed by e.g. [11] through a smeared-crack model, with the aim to catch the load-carrying capacity and failure behaviour of RC beams reinforced in flexure with a FRP sheet.…”

Section: Available Experimental Data and Numerical Analysesmentioning

confidence: 99%

“…In Ferracuti et al (2006) and Ferretti and Savoia (2003), a non‐linear two‐dimensional behaviour is attributed to the interface and the solution is reached via a finite differences scheme; in Point and Sacco (1996), Bruno and Greco (2001), Bruno et al (2003, 2006, 2007) and Greco et al (2007) the two‐dimensional interface model is based on fracture and contact mechanics and on the evaluation of the energy release rate. A non‐linear softening phenomenological curve is used in Leung et al (2006b) and Rabinovitch and Frostig (2001) whereas in Hormann et al (2002) fracture energies are used as control parameters but the adhesive layer is not taken into account.…”

Section: Introductionmentioning

confidence: 99%

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Three‐dimensional modelling of bond behaviour between concrete and FRP reinforcement

Salomoni

Mazzucco

Pellegrino

et al. 2011

Engineering Computations

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The bond behaviour between FRP and concrete elements is investigated, starting from available experimental evidences, through a calibrated and upgraded 3D mathematical-numerical model. The complex mechanism of debonding failure of FRP concrete reinforcement is studied within the context of damage mechanics to appropriately describe transversal effects and developing a realistic study of the delamination process.

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Section: Available Experimental Data and Numerical Analysesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Three‐dimensional modelling of bond behaviour between concrete and FRP reinforcement

Salomoni

Mazzucco

Pellegrino

et al. 2011

Engineering Computations

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“…Vonk [25] reported that the total compressive fracture energy ranged from 10 to 25 N/mm, which is about 50-100 times the tensile fracture energy. Hormann et al [26] numerically investigated the response of FRP-strengthened concrete slabs using an energy-based parabolic model for concrete compressive behavior with a very large fracture energy value of 500 N/mm, which is actually very close to idealized plastic behavior before concrete crushing. Although many concrete constitutive models are available, a widely used model [27] without the limitations of strain capacity, as shown in Figure 5, is adopted for this investigation for simplicity, to characterize the relationship between the compressive stress, c , and the compressive strain, " c as:…”

Section: Reinforcing Barsmentioning

confidence: 99%

FE Investigation of Material and Preload Parameters on FRP Strengthening Performance of RC Beams, I: Model Development

Niu

Karbhari

2008

Journal of Reinforced Plastics and Composites

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The effectiveness of FRP-rehabilitation of deteriorating and under-strength reinforced concrete beams depends not only on the properties of the FRP material, but also on the characteristics of other materials in the system, characteristics of the bond, and the relative nature of properties of materials at the interfaces. Response is also affected by the cracked condition of the beam prior to the external bonding of the FRP. An understanding of the effect of critical material and configuration parameters on strengthening response and failure mode is essential to optimize the technique. Most current models do not present a comprehensive overview of both response, and mechanisms and modes of failure. This paper reports on the development of a finite element analysis approach which not only provides characteristics of response, but also enables identification of damage mechanisms and their progression to failure. The model incorporates a fracture-based approach and includes modules for constitutive response of the concrete, reinforcing steel, FRP composite, and the FRP composite-concrete interface.

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“…Loo et al [23] performed a numerical investigation of concrete hybrid slabs under shear pull-out tests. Hörmann et al [24] investigated two nonlinear finite element models; two-dimensional (2D) and three-dimensional (3D) to study concrete slabs reinforced with FRP. Naser et al [25] used three-dimensional (3D) FE modeling for the analysis of strengthened beams with CFRP laminate.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation and Cost Analysis of FRP-Concrete Unidirectional Hybrid Slabs

Mahboob

Eskenati

Moradalizadeh

2021

International Journal of Applied Mechanics and Engineering

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Fiber-reinforced polymer (FRP) has been commonly used to reinforce concrete structures. The kinds of FRP demonstrate an effective alternative to various methods of reinforcement in concrete structures subjected to bad environmental conditions which cause corrosion and damage to concrete. Due to their lightweight, high strength, and high corrosion and fatigue resistance, Fiber Reinforced Polymer (FRP) composites have been widely applied in steel substitution during revitalization interventions. This paper presents numerical three-points bending tests on different models to investigate the effect of the reinforcements; Carbon, Glass, and Aramid fibers to find the corresponding cost of each one. Also, there is an available experimental model for verifying the results of the FEM that demonstrated broad agreement with the experimental statement, concerning the load-displacement curve. After validating the models, alternative designs such as type of the FRP, position of the FRP, and amount of the FRP usage were numerically tested to study the influence of each on the load-bearing capacity. The results showed that the best configuration would be one with GFRP and the load-bearing capacity is around 9 kN in the optimum design.

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Numerical Investigation of Fiber Reinforced Polymers Poststrengthened Concrete Slabs

Cited by 7 publications

References 12 publications

Three‐dimensional modelling of bond behaviour between concrete and FRP reinforcement

Three‐dimensional modelling of bond behaviour between concrete and FRP reinforcement

FE Investigation of Material and Preload Parameters on FRP Strengthening Performance of RC Beams, I: Model Development

Numerical Investigation and Cost Analysis of FRP-Concrete Unidirectional Hybrid Slabs

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