A discrete spectral model for intermediate crack debonding in FRP-strengthened RC beams

Sun, Rui; Sevillano Bravo, Enrique y Perera Velamazán, Ricardo (2015). A discrete spectral model for intermediate crack debonding in FRP-strengthened RC beams. "Composites Part B: Engineering", v. 69 ; pp. 562-575. ISSN 1359-8368. https://doi.org/10.1016/j.compositesb.2014.10.017.

Descripción

Título: A discrete spectral model for intermediate crack debonding in FRP-strengthened RC beams
Autor/es:
  • Sun, Rui
  • Sevillano Bravo, Enrique
  • Perera Velamazán, Ricardo
Tipo de Documento: Artículo
Título de Revista/Publicación: Composites Part B: Engineering
Fecha: Marzo 2015
Volumen: 69
Materias:
Palabras Clave Informales: Polymer matrix composites; Debonding; Computational modelling
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Mecánica
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

One of the common failure modes of reinforced concrete (RC) beams strengthened in flexure with a bonded fibre-reinforced polymer (FRP) is intermediate crack (IC) debonding, which is originated at a critical section in the vicinity of flexural cracks and propagates to a plate end. Despite considerable research over the last years, few reliable and simplified IC debonding strength models have been developed. This paper firstly presents a one-dimensional model based on the discrete crack approach for concrete and the spectral element method for the numerical simulation of the IC debonding process. The progressive formation of flexural cracks and subsequent concrete-FRP interfacial debonding is formulated by the introduction of a new element able to represent both phenomena simultaneously without perturbing the numerical procedure. Furthermore, with the proposed model, high frequency dynamic response for these kinds of structures can also be obtained in a very simple and non-expensive way, which makes this procedure very useful as a tool for diagnoses and detection of debonding in its initial stage by monitoring the change in local dynamic characteristics.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaBIA2010-20234-C03-01Sin especificarUniversidad Politécnica de MadridEstructuras inteligentes de hormigon reforzadas con FRP

Más información

ID de Registro: 35881
Identificador DC: http://oa.upm.es/35881/
Identificador OAI: oai:oa.upm.es:35881
Identificador DOI: 10.1016/j.compositesb.2014.10.017
URL Oficial: http://www.sciencedirect.com/science/article/pii/S1359836814004612
Depositado por: Memoria Investigacion
Depositado el: 04 Abr 2016 08:38
Ultima Modificación: 04 Abr 2016 08:55
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