FE investigations of the effect of fluctuating local tensile strength on coupled energetic–statistical size effect in concrete beams

Korol, E. Z.; Tejchman, J.; Mróz, Z.

doi:10.1016/j.engstruct.2015.09.011

Cited by 35 publications

(22 citation statements)

References 32 publications

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“…All of the fracture models mentioned above are widely accepted by researchers and they are able to describe the size effect of concrete by including a characteristic length of concrete microstructure. In addition, the constitutive models with nonlocal softening [50][51][52][53][54][55][56][57] considering of the structural damage are also employed in the investigation of size effect in concrete structures and great progresses have been made. These kinds of fracture mechanical models predict a size effect if geometrically similar specimens (including notches) of different sizes are considered, such that the nominal strength r Nu decreases as the characteristic dimension D of the structure increases.…”

Section: Size Effect Analysis Based On Fracture Mechanicsmentioning

confidence: 99%

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

Jin

Liu

2016

Engineering Structures

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Section: Size Effect Analysis Based On Fracture Mechanicsmentioning

confidence: 99%

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

Jin

Liu

2016

Engineering Structures

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“…At macroscopic scale, concrete could be regarded as a homogeneous material, while at mesoscopic scale it is treated as consisting of coarse aggregates and mortar matrix (Wriggers and Moftah, 2006). Many concrete nonlinear fracture models (Bažant and Jirasek, 2002; Jirasek and Zimmermann, 2001a, 2001b; Majewski et al., 2008; Pijaudier-Cabot et al., 2004; Skarżyński et al., 2011; Syroka-Korol, 2014, 2015; Yılmaz and Molinari, 2017), based on the theory of fracture mechanics and the nonlocal theory, have been established at macro-scale. The macroscopic computational models in the literatures are able to describe the nonlinear mechanical properties and the size effect behavior of concrete by including a characteristic length of microstructure.…”

Section: Experimental and Numerical Setupmentioning

confidence: 99%

A combined experimental and numerical analysis on the seismic behavior of short reinforced concrete columns with different structural sizes and axial compression ratios

Jin

Zhang

et al. 2017

International Journal of Damage Mechanics

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The results of an experimental program on eight short reinforced concrete columns having different structural sizes and axial compression ratios subjected to monotonic/cyclic lateral loading were reported. A 3D mesoscopic simulation method for the analysis of mechanical properties of reinforced concrete members was established, and then it was utilized as an important supplement and extension of the traditional experimental method. Lots of numerical trials, based on the restricted experimental results and the proposed 3D mesoscopic simulation method, were carried out to sufficiently evaluate the seismic performances of short reinforced concrete columns with different structural sizes and axial compression ratios. The test results indicate that (1) the failure pattern of reinforced concrete columns can be significantly affected by the shear-span ratio; (2) increasing the axial compression ratio could improve the load capacity of the reinforced concrete column, but the deformation capacity would be restricted and the failure mode would be more brittle, consequently the energy dissipation capacity could be deteriorated; and (3) the load capacity, the displacement ductility, and the energy dissipation capacity of the short reinforced concrete columns all exhibit clear size effect, namely, the size effect could significantly affect the seismic behavior of reinforced concrete columns.

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“…In practice, the application of random field regarding penetration of chloride has been challenged by the complication of measurement of random entities due to their fluctuations. Thus, to deal with the modeling of the fluctuations of certain variable parameters, stationary random field was exploited [27][28][29]. To account for, furthermore, type of probability distribution, correlation function and inter-dependent relation among these random variables, the model will be extended under a probabilistic scheme.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Modeling of Chloride Penetration with Respect to Concrete Heterogeneity and Epoxy-Coating on the Reinforcement

Lehner

Konečný

2019

Materials

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The presented article demonstrates the probabilistic method based modeling of the 2D chloride ingress into reinforced concrete structures with respect to concrete heterogeneity and epoxy-coated steel reinforcement. Spatial change of concrete diffusion is assessed through the investigation of random variation of the ability of concrete to resist chloride ingress. Time-dependent chloride concentration at the reinforcement level in both homogeneous and heterogeneous models is comparatively considered taking into account of the influence of reinforcement protection as well as the defects and holidays of the coating. Expansion optimal linear estimation method is exploited to generate a random field for the structure at the mesoscale and correlation length is employed to simplify the modeling process. Preliminary analyses of the built model are conducted in both deterministic and probabilistic solutions under the scheme of the finite element method. Thus, possibility of such analyses is exploited.

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FE investigations of the effect of fluctuating local tensile strength on coupled energetic–statistical size effect in concrete beams

Cited by 35 publications

References 32 publications

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

Mechanical behavior and size effect of moderate high-strength RC columns under monotonic and cyclic axial compression

A combined experimental and numerical analysis on the seismic behavior of short reinforced concrete columns with different structural sizes and axial compression ratios

Probabilistic Modeling of Chloride Penetration with Respect to Concrete Heterogeneity and Epoxy-Coating on the Reinforcement

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