Numerical analyses of interaction of steel-fibre reinforced concrete slab model with subsoil

Labudková, Jana; Čajka, Radim

doi:10.3221/igf-esis.39.06

Cited by 3 publications

(4 citation statements)

References 7 publications

(8 reference statements)

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“…3. Based on a parametric study [6], [7], [8], an area representing the subsoil was 8.0 x 8.0 x 8.0 m. Physical nonlinearity associated with material properties was used. The nonlinear material model was performed by Drucker-Prager model (Fig.…”

Section: Numerical Analyses In Ansysmentioning

confidence: 99%

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Interaction of Nonlinear Numerical Model of SFRC Slab and Nonlinear Numerical Subsoil Model

Vaskova¹,

Čajka²

2018

GEOMATE

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Experimental measurements of the concrete slab in interaction with subsoil are compared with numerical analysis based on Finite Element Method FEM. Experimental measurements are conducted with using an experimental device constructed at the Faculty of Civil Engineering VSB -Technical University of Ostrava. In the article, several types of nonlinearities enter into FEM analysis. Subsoil-structure interaction requires an iterative solution procedure -and therefore structural nonlinearity. Material nonlinearity was used in the numerical model of the slab. This model also allows the creation and development of cracks in concrete -similar as during the experimental load test. Material nonlinearity was also used in the numerical model subsoil -to ensure of apposite subsoil behavior. The purpose of this paper is to compare resulting deformation of the slab with values observed during experimental loading test. It was concluded that the good agreement between the experimental results and numerical simulation was observed.

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Section: Numerical Analyses In Ansysmentioning

confidence: 99%

“…It has been proven by parametric analysis in author´s articles, eg. [6], [8]. Important parameters influencing the results of the numerical analysis are, among other, the size of the modeled area representing the subsoil, the choice of boundary conditions or mesh size.…”

Section: Fig 12 Deformation Of the Model Slab With Cracksmentioning

confidence: 99%

Interaction of Nonlinear Numerical Model of SFRC Slab and Nonlinear Numerical Subsoil Model

Vaskova¹,

Čajka²

2018

GEOMATE

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“…Approaches to the modelling of the structure-subsoil interaction are characterized by different degrees of simplification of this real, complex, generally non-linear contact problem [25][26][27][28][29][30][31][32][33][34]. The usual approach in the structural engineering is often focused on the most detailed modelling of the foundation structure itself [35] and the subsoil is often simplified by spring models (Winkler, Pasternak, etc.)…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Interaction between Fibre Concrete Slab and Subsoil—The Impact of Selected Determining Factors

Ďuriš

Hrubešová

2020

Sustainability

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Shape and material optimization of building structures, including reducing the amount of concrete used, are very important aspects in sustainable construction. Numerical modelling is currently used very effectively to design optimized and sustainable structures, including their interaction with the surrounding rock environment. This paper is focused on the three selected factors of numerical modelling of fibre concrete slab and subsoil interaction: (1) the constitutive model of fibre concrete slab, (2) deformational and strength characteristics of subsoil, (3) effect of interface elements. The specialized geotechnical software Midas GTS NX, based on the finite element method, was used for the modelling of this task. Numerical results were compared with the experimental measurement of vertical displacements on the upper surface of slab. In the presented study, three constitutive models of slab recommended in MIDAS GTS NX code for modelling concrete behaviour (elastic, Mohr-Coulomb and Drucker-Prager) were applied. In addition, the sensitivity analysis with respect to the deformational and strength characteristics of subsoil was performed. The numerical study also presents the effect of the interface elements application on the slab behaviour. The numerical results of maximum vertical displacements based on the Drucker-Prager and elastic model underestimated both the experimental results and numerical results based on the Mohr-Coulomb model. From the qualitative point of view (shape of deflection curve), the numerical simulation showed the better agreement of the Mohr-Coulomb constitutive model with the experimental measurements in comparison with the other two investigated constitutive models. The performed parametric study documented that reduction of the strength and deformational characteristics of subsoil leads to the increase of maximum vertical displacements in the centre of slab, but the experimentally measured deflection curve, including uplift of slab and gapping occurrence between the slab and subsoil, was not achieved without the interface application.

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“…Analysis of SFRC foundations complements long term research at FAST VSB -TU which is focused on soil structure interaction, both in the experimental field and in the consecutive mathematical modelling [3]. On the yard of the FAST VSB -TU Ostrava testing devise was built up for testing of simple model foundation structures.…”

Section: Introductionmentioning

confidence: 99%

Influence of Various Amount of Steel Fibers on Load Capacity and Strain in Model Foundation Slab

Matečková

Smirakova

Litvan

2018

KEM

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Numerical analyses of interaction of steel-fibre reinforced concrete slab model with subsoil

Cited by 3 publications

References 7 publications

Interaction of Nonlinear Numerical Model of SFRC Slab and Nonlinear Numerical Subsoil Model

Interaction of Nonlinear Numerical Model of SFRC Slab and Nonlinear Numerical Subsoil Model

Numerical Simulation of the Interaction between Fibre Concrete Slab and Subsoil—The Impact of Selected Determining Factors

Influence of Various Amount of Steel Fibers on Load Capacity and Strain in Model Foundation Slab

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