Prediction of Shear Failure of Large Beams Based on Fracture Mechanics

Červenka, Vladimír; Červenka, J; Pukl, Radomír; Sajdlová, Tereza

doi:10.21012/fc9.029

Cited by 24 publications

(20 citation statements)

References 7 publications

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“…As discussed earlier, the presented study shows a clear influence of element size on the simulation results. However, a conclusion opposite to that reported in a previous study 17 was obtained. To get a clear picture of the influence of element size in shear simulations, further study is still necessary.…”

Section: Introduction Of a Bond-slip Modelcontrasting

confidence: 99%

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Postdiction of the Flexural Shear Capacity of a Deep Beam Without Stirrups Using NLFEM

Yang

Dr.ir.²,

Ir.

2021

Structural Engineering International

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A recent contest of shear tests modelling was carried out in 2019. Teams from universities and consultancies around Europe were invited to predict the shear capacity of two reinforced concrete beams. The basics of the numerical models were to be set up according the Dutch NLFEM Guideline RTD 1016-1:2017. In the contest, two reinforced concrete beams without stirrups but having large depth (1200 mm), tested at Delft University of Technology, were selected as the modelling target. Most participants in the contest did not obtain good agreement with the test results. This paper presents a postdiction study on one of the two tests: H123. Based on this study, some adaptations are made to the recommendations of RTD 1016-1:2017 in order to approach the test results better. The intention of this contribution is to improve the existing NLFEA Guideline for practical engineering structures with uncommon reinforcement layouts.

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Section: Introduction Of a Bond-slip Modelcontrasting

confidence: 99%

“…For shear simulations, recent studies reported in Refs. [16,17] showed that the element size and orientation still have a clear influence on the prediction results. Therefore, the influence of element size is chosen as a modelling parameter to be studied in this paper.…”

Section: Modelling Choices Based On the Rtd 1016-1 Guidelinementioning

confidence: 99%

Postdiction of the Flexural Shear Capacity of a Deep Beam Without Stirrups Using NLFEM

Yang

Dr.ir.²,

Ir.

2021

Structural Engineering International

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“…It was found that an introduction of concrete non-homogeneity using random fields reduced this discrepancy. A detailed discussion of this phenomenon, mesh size and element type effects, was published by the authors in paper by Cervenka et al 17 The numerical analysis of all beams in this group was performed in two stages. First, the self-weight was applied in one step.…”

Section: Deflection [Mm]mentioning

confidence: 99%

“…It was found that an introduction of concrete non‐homogeneity using random fields reduced this discrepancy. A detailed discussion of this phenomenon, mesh size and element type effects, was published by the authors in paper by Cervenka et al…”

Section: Case Studiesmentioning

confidence: 99%

Model uncertainties in numerical simulations of reinforced concrete structures

Červenka

Kadlec

2018

Structural Concrete

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Numerical simulation based on the nonlinear fine element analysis requires a global safety format, which includes a model uncertainty. A general method for assessment of a global safety factor of model uncertainty is proposed for a particular resistance model. A set of 33 laboratory tests of reinforced concrete elements published by other authors is used for the model validation. It covers a wide range of failure models from brittle to ductile, and the member cross section size range from 0.1 to 4 m. The numerical model used for simulation is the fracture‐plastic constitutive model for concrete developed by the authors and implemented in the nonlinear finite element analysis in a commercial software.

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“…In ATENA, constitutive laws of concrete can be modeled using either the SBETA or the fracture-plastic model [17][18][19][20]. In the latter model, behavior of concrete is treated based on the combination of tension (fracturing) and compression (plastic) [21].…”

Section: Introductionmentioning

confidence: 99%

Predicting the Flexural Response of a Reinforced Concrete Beam Using the Fracture-Plastic Model

Tambusay

Suprobo

2019

Journal of Civil Engineering

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This paper describes an attempt to predict the flexural response of a reinforced concrete (RC) beam using nonlinear finite element analysis. To facilitate direct comparison, the beam was tested experimentally under four-point bending with the load increased monotonically. The load-deflection response, crack pattern and failure mode were observed in the experiment. Analysis incorporating the application of ATENA 3D was performed using the fracture-plastic model which is based on the classical orthotropic smeared crack formulation and crack band model. The applicability of this model was demonstrated through detailed simulation of RC beam with identical geometry, reinforcement arrangement, and material properties. From this study, it is found that the overall predicted responses are in very good agreement to those obtained from the experiment. It is also found that the feature in ATENA enables the presentation of reasonably maximum principal strains of concrete and rebar elements which can, therefore, be associated with the predicted crack bands.

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Prediction of Shear Failure of Large Beams Based on Fracture Mechanics

Cited by 24 publications

References 7 publications

Postdiction of the Flexural Shear Capacity of a Deep Beam Without Stirrups Using NLFEM

Postdiction of the Flexural Shear Capacity of a Deep Beam Without Stirrups Using NLFEM

Model uncertainties in numerical simulations of reinforced concrete structures

Predicting the Flexural Response of a Reinforced Concrete Beam Using the Fracture-Plastic Model

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