A simplified and fast computational finite element model for the nonlinear load-displacement behaviour of reinforced concrete structures

Benakli, Sarah; Bouafia, Youcef; Oudjene, Marc; Boissière, R.; Khelil, A.

doi:10.1016/j.compstruct.2018.03.070

Cited by 4 publications

(4 citation statements)

References 8 publications

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“…It is assumed that the behavior of a reinforced concrete element subjected to traction follows three main phases ( Figure 2), namely a linear elastic phase (branch OA), an inelastic cracked phase (branch AC) and an elastic cracked phase (CB) [7,8].  At crack stabilization (Stage IIb) or during crack propagation when the total introduction length cannot develop, the main values are calculated and noted (or ) for steel and (or ) for concrete.…”

Section: Behavior Law Adapted For Fictitious Steelmentioning

confidence: 99%

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New Approach for Simulating Reinforced Concrete Walls in Quasi-static Loading

et al. 2020

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The main objective of this article is to apply a simplified model to simulate the overall behavior of a reinforced concrete wall without the need to explicitly represent the reinforcing bars in the model nor the progressive degradations of the concrete in tension. The model takes into account the fictitious laws of the material, in order to estimate the capacity of the studied model and its performance to simulate the complex behavior of concrete. The law of the fictitious behavior of reinforced concrete tie rods is based on the shape of the adhesion curve between steel and concrete. Relationships covering the cracking stage up to the elastic limit of steel are proposed according to the properties of concrete and steel materials, the percentage of steel. An analytical computational model is then implemented in the Matlab programming language. Necessary transformations for the integration of the law of fictitious average behavior of steel in the Abaqus software were carried out thus making it possible to make a considerable advance from the point of view of validation of the developed law. The general formulation of the tension law applies to sections where the reinforcements are distributed so that the resistance of the entire section is mobilized. Hence the need to introduce an effective area around the rebars for the application of the fictitious tension law to reinforced concrete walls. Numerical simulations have been validated using an example of reinforced concrete wall subjected to a quasi-static loading. Load-displacement responses are compared and the numerical results approaches well the experimental one. By using the law of the fictitious diagram of the concrete and by defining the effective tensile zone of the wall, the model makes it possible to save a considerable time of calculation compared to a traditional calculation in EF on Abaqus. Doi: 10.28991/cej-2020-03091622 Full Text: PDF

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Section: Behavior Law Adapted For Fictitious Steelmentioning

confidence: 99%

“…This diagram is then transformed into an average behavior relation of reinforced concrete. Please refer to the Benakli et al (2018) study [8] for a better understanding of the development of the law of fictitious behavior of steel. Therefore, an analytical model of computation is proposed.…”

Section: Behavior Law Adapted For Fictitious Steelmentioning

confidence: 99%

New Approach for Simulating Reinforced Concrete Walls in Quasi-static Loading

et al. 2020

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“…With the second method, the concrete and the stirrups are both modelled using 3D solid elements, and considering bond‐slip relationship between steel rebar and concrete. A 3D FEM model of the bond‐controlled behaviour of RC columns has been done by Benaklia et al using the commercial FEM code ANSYS. In this study, the concrete and the steel reinforcement were represented by 3D solid elements and two nodes link elements, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Both methods show good agreement with the experimental results in terms of limit force and the final cracking pattern. According to Benaklia et al, the controlling bond‐slip method provides better results in terms of the force‐displacement curve than the perfect bond method. But those studies have not pointed out the cracking process before rebar yielding.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of the damage process in RC beam‐column sub‐assemblages during a progressive collapse scenario

Chen

Forquin

2019

Num Anal Meth Geomechanics

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Summary In the present paper, the collapse resistance of reinforced concrete (RC) beam‐column sub‐assemblages subjected to a middle column removal scenario is investigated on the basis of experimental tests and numerical calculations. For the experimental programme, three one‐third scale substructures are designed with two types of longitudinal steel rebar to observe the influence of rebar detailing on the global structural behaviour. The structure under consideration is composed of a two‐bay beam, and a middle column lies on two sliding‐pin connections to prevent a catenary action mechanism. A digital image correlation (DIC) technique was employed with the experiments to observe the growth of cracks. In addition, numerical simulations using the finite element method (FEM) were also done. The Denoual‐Forquin‐Hild (DFH) anisotropic damage model is used to simulate the behaviour of the concrete, whereas a plasticity model is used for the steel rebars. The numerical simulations are compared with experimental data in terms of structural yield strength, change in stiffness and crack propagation, and better agreement is observed when a weakening of the concrete due to beam stirrups is taken into account.

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Bonding property and seismic behavior of reinforced concrete and finite element analysis

Jiao

Tao

2020

Arab J Geosci

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A simplified and fast computational finite element model for the nonlinear load-displacement behaviour of reinforced concrete structures

Cited by 4 publications

References 8 publications

New Approach for Simulating Reinforced Concrete Walls in Quasi-static Loading

New Approach for Simulating Reinforced Concrete Walls in Quasi-static Loading

Experimental and numerical study of the damage process in RC beam‐column sub‐assemblages during a progressive collapse scenario

Bonding property and seismic behavior of reinforced concrete and finite element analysis

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