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Tomaž Hozjan - One of the best experts on this subject based on the ideXlab platform.

  • the fire analysis of a steel concrete side Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

  • The fire analysis of a steel–concrete side-Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

Jialai Wang - One of the best experts on this subject based on the ideXlab platform.

  • cohesive zone model of intermediate crack induced debonding of frp Plated concrete Beam
    International Journal of Solids and Structures, 2006
    Co-Authors: Jialai Wang
    Abstract:

    Abstract External bonding of FRP plates or sheets has emerged as a popular method for strengthening reinforced concrete structures. Debonding along the FPR–concrete interface can lead to premature failure of the structures. In this study, debonding induced by a flexural crack in a FRP-Plated concrete Beam is analyzed through a nonlinear fracture mechanics method. The concrete Beam and FRP plate are modeled as linearly elastic simple Beams connected together through a thin layer of FRP–concrete interface. A bi-linear cohesive (bond-slip) law, which has been verified by experiments, is used to model the FRP–concrete interface as a cohesive zone. Thus a cohesive zone model for intermediate crack-induced debonding is established with a unique feature of unifying the debonding initiation and growth into one model. Closed-form solutions of interfacial stress, FRP stress and ultimate load of the Plated Beam are obtained and then verified with the numerical solutions based on finite element analysis. Parametric studies are carried out to demonstrate the significant effect of FRP thickness on the interface debonding. The bond-slip shape is examined specifically. In spite of its profound effect on softening zone size, the bond-slip shape has been found to have little effect on the ultimate load of the Plated Beam. By making use of such a unique feature, a simplified explicit expression is obtained to determine the ultimate load of the Plated concrete Beam with a flexural crack conveniently. The cohesive zone model in this study also provides an efficient and effective way to analyze more general FRP–concrete interface debonding.

J. Kolšek - One of the best experts on this subject based on the ideXlab platform.

  • the fire analysis of a steel concrete side Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

  • The fire analysis of a steel–concrete side-Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

Igor Planinc - One of the best experts on this subject based on the ideXlab platform.

  • the fire analysis of a steel concrete side Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

  • The fire analysis of a steel–concrete side-Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

Miran Saje - One of the best experts on this subject based on the ideXlab platform.

  • the fire analysis of a steel concrete side Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.

  • The fire analysis of a steel–concrete side-Plated Beam
    Finite Elements in Analysis and Design, 2013
    Co-Authors: J. Kolšek, Igor Planinc, Miran Saje, Tomaž Hozjan
    Abstract:

    Abstract A new finite element model for steel–concrete side-Plated Beams exposed to mechanical and thermal loading is presented. The moisture and heat transfer through concrete is considered independent on mechanical deformations. The hygro-thermo-mechanical analysis is performed in two separate steps starting with the moisture and heat transfer analysis and continuing with the mechanical stress–strain analysis. The finite-element model of Davie, Pearce, and Bicanic was implemented for the moisture and heat transfer analysis in the concrete part of the Beam. The Fourier equation of heat transfer for non-porous solids was applied in the steel part. A novel, strain-based finite-element formulation of the planar Beam is proposed to perform the mechanical part of the fire analysis. Each of the two steps of the model is first verified by comparing the present numerical results with the experimental and numerical data available in the literature. The finite-element formulations of both the hygro-thermal and the mechanical steps of the analysis are found to be reliable and accurate. Finally, effects of the side reinforcing of a RC Beam as one of the methods of structural retrofitting are explored in the case of a typical fire scenario and an important contribution of the side-plates to the ultimate fire resistance of the Beam is discovered, particularly when higher levels of the service load are applied to the Beam.