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Memorias de investigación
Communications at congresses:
DETECTION ON DEBONDINGS IN FRP-STRENGTHENED REINFORCED CONCRETE BEAMS
Year:2010
Research Areas
  • Civil engineering
Information
Abstract
Advanced composite materials are increasingly used in the strengthening of reinforced concrete (RC) structures. The use of externally bonded strips made of fibre-reinforced plastics (FRP) as strengthening method has gained widespread acceptance in recent years since it has many advantages over the traditional techniques, especially because of the high strength and modulus of elasticity, improved durability, and low weight of the composite material. Failure of FRP-strengthened RC beams may take a variety of forms including all those associated with conventional concrete beams. However, unfortunately, this strengthening method is often associated with a brittle and sudden failure caused by some form of FRP bond failure. This kind of failure is produced in the form of cover delamination, i.e., along the plane of the steel reinforcement, or FRP delamination, i.e., in the plane along the FRP-concrete interface. Furthermore, failure may be originated at the termination of the FRP material and propagate towards the midspan or in the vicinity of flexural cracks in the RC beam and propagate towards the FRP termination. Hence, flexural cracking of the RC beam has a major influence on the overall response of the strengthened member, and it affects the distribution of the stresses in the various constituents of the strengthened member . In addition, this failure mode will affect the dynamic response of the beam by altering its natural frequencies. As a result, considerable analytical, numerical and experimental efforts should be made to capture these phenomena. An optimization method based on spectral elements is proposed here for detection of local debondings in RC beams externally strengthened with FRP.
International
Si
Congress
Third International Conference on Multidisciplinary design optimization and applications
960
Place
París (Francia)
Reviewers
Si
ISBN/ISSN
11-1111-111-1
Start Date
21/06/2010
End Date
23/06/2010
From page
1
To page
6
Proceedings of the Third International Conference on Multidisciplinary design optimization and applications
Participants
  • Autor: Ricardo Perera Velamazan (UPM)
  • Autor: Antonio Ruiz Perea (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Mecánica Estructural y Construcciones Industriales
  • Departamento: Matemática Aplicada a los Recursos Naturales
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