Semi-empirical synergetic analysis of the shear capacity of steel fibre reinforced concrete slender beams of rectangular-sections without stirrups

Zhao, Minglei; Li, Jie; Xie, Yi Min; Shen, Jianhu

doi:10.1016/j.engstruct.2023.116035

Cited by 7 publications

(3 citation statements)

References 61 publications

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“…The Estimation of the Coefficient of Variation (ECOV) is determined by utilizing both the mean and characteristic values of material properties, as depicted in Equation (6).…”

Section: Nlfea According To Different Safety Formatsmentioning

confidence: 99%

“…In Table 9, the results for each beam and respective safety format, including ultimate loads determined through NLFEA, statistical metrics, and finally, the ultimate design loads are reported. (6). In Figure 10, a comparison is presented between the crack patterns obtained through numerical simulations at the final converged loading step (where the crack width exceeds 0.1 mm) using various NLFEA models, and the cracks observed experimentally for beams IB5 and IB6.…”

Section: Nlfea According To Different Safety Formatsmentioning

confidence: 99%

“…Steel fiber-reinforced concrete (SFRC) is still the most applied FRC, where steel fibers are used to effectively mitigate brittle failure and control crack development [4,5], positioning itself as a promising solution for modern infrastructure projects. Employing enough steel fibers in reinforced SFRC beams lacking stirrups can enhance their shear capacity, which might potentially result in a transition of the failure pattern from being predominantly shear-driven to being governed by flexural mechanisms [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Global Resistance Methods for the Design of Fiber-Reinforced Concrete (FRC) Beams with Material Nonlinear Finite Element Analysis

Shahrbijari,

Barros,

Valente

2023

Buildings

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This article explores the application of the global resistance methods (GRMs) on the design of hybrid glass fiber-reinforced polymer (GFRP) and steel fiber-reinforced concrete (SFRC) beams. Addressing challenges posed by GFRP-reinforced beams, this study aims to assess the impact of material uncertainties on the behavior of such hybrid beams. The investigation involves the experimental testing of I-shaped SFRC beams, which are used to develop and validate nonlinear finite element analysis (NLFEA) models. These models incorporate material non-linearities while minimizing uncertainties related to modeling assumptions. Through the application of GRM, the study evaluates the global resistance safety factor, offering insights into the structural performance of hybrid reinforcement SFRC beams. Ultimately, this research seeks to facilitate a transition from traditional localized approaches to more accurate and comprehensive analyses for the design of hybrid reinforcement SFRC beams, contributing to the advancement of structural engineering by promoting safer, more resilient, and sustainable construction systems.

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“…The Estimation of the Coefficient of Variation (ECOV) is determined by utilizing both the mean and characteristic values of material properties, as depicted in Equation (6).…”

Section: Nlfea According To Different Safety Formatsmentioning

confidence: 99%

Section: Nlfea According To Different Safety Formatsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Global Resistance Methods for the Design of Fiber-Reinforced Concrete (FRC) Beams with Material Nonlinear Finite Element Analysis

Shahrbijari,

Barros,

Valente

2023

Buildings

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A numerical critical shear crack model and its application to post‐peak behavior assessment of RC and SFRC beams

Xiang,

Yu,

Gao

2024

Structural Concrete

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In this paper, a numerical critical shear crack model, in which the shear‐flexural coupling effect is considered and the full process of stress and strain is captured, is proposed to evaluate the post‐peak behavior of reinforced concrete (RC) and steel fiber reinforced concrete (SFRC) beams. The shape of critical shear crack is identified by combining the modified compression field theory considering the bridge effect of steel fibers and the section analysis method. Based on the shape of critical shear crack, the shear capacity of beam members is provided by the shear tension zone and the shear compression zone. The shear capacity of the shear tension zone is calculated by the modified compression field theory and that of the shear compression zone is determined by multiaxial strength criterion of concrete. The vertical displacements caused by the flexure deformation and shear deformation are deduced by the moment area method and integration of shear strain. To verify the proposed numerical approach, a test database of 486 RC beams and 313 SFRC beams was established to predict the shear strength, and the force‐displacement relationships of twelve beam members are used to validate the feasibility for full process analysis. The stochastic analysis of beams with different failure modes is conducted via GF‐discrepancy‐based point selection method and probability density evolution method. The limitation between different failure modes is defined according to the degradation percent of shear capacity and it is taken as threshold value of failure domain, and the failure probability analysis indicates that the designed flexure beam member suffered severe degradation of shear capacity, resulting in a significant decline in safety probability.

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Effect of hybrid steel fibres on shear behaviour of self compacting RC beam

Ramkumar,

Sudha,

Gunasekaran

et al. 2024

Innov. Infrastruct. Solut.

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Semi-empirical synergetic analysis of the shear capacity of steel fibre reinforced concrete slender beams of rectangular-sections without stirrups

Cited by 7 publications

References 61 publications

Global Resistance Methods for the Design of Fiber-Reinforced Concrete (FRC) Beams with Material Nonlinear Finite Element Analysis

Global Resistance Methods for the Design of Fiber-Reinforced Concrete (FRC) Beams with Material Nonlinear Finite Element Analysis

A numerical critical shear crack model and its application to post‐peak behavior assessment of RC and SFRC beams

Effect of hybrid steel fibres on shear behaviour of self compacting RC beam

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