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The Influence of the Flexibility of a Polymeric Adhesive Layer on the Mechanical Response of a Composite Reinforced Concrete Slab and a Reinforced Concrete Beam Girder.
Szeptynski, Pawel; Pochopien, Jan Grzegorz; Jasinska, Dorota; Kwiecien, Arkadiusz.
Afiliación
  • Szeptynski P; Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland.
  • Pochopien JG; Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland.
  • Jasinska D; Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland.
  • Kwiecien A; Faculty of Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland.
Polymers (Basel) ; 16(3)2024 Feb 05.
Article en En | MEDLINE | ID: mdl-38337333
ABSTRACT
This study addresses the challenges of modeling flexible connections in composite structures employing a polymeric adhesive layer. These types of connections provide a more uniform stress distribution compared to conventional rigid connectors. However, they lack standardized design rules and still require much research to sufficiently comprehend their properties. The novelty of this research lies in proposing an analytical solution to address these issues. Its aim is to investigate the influence of the stiffness of the polymer adhesive on the girder's deflection and on the maximum stresses in both the adhesive and concrete. The analyzed composite structure consists of a reinforced concrete (RC) slab and an RC beam connected with a layer of flexible polyurethane (FPU) adhesive. Analytical and numerical approaches for the description of the mechanical response of a composite bridge girder are presented. Another objective is to validate the analytical design formulas using 3D nonlinear numerical analysis, both in the case of uncracked and cracked concrete. Seven types of FPUs are tested in the uniaxial tension test, each examined at five strain rates. The obtained data is used to predict the mechanical response of the considered girder using finite element analysis (FEA) as well as with a simplified one-dimensional composite beam theory. Fair agreement is found between the FEA results and theoretical predictions. A comparison of the results obtained for these two models is performed, and the similarities and discrepancies are highlighted and discussed.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Polymers (Basel) Año: 2024 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Suiza