Memorias de investigación
Ponencias en congresos:
Ductility and redistribution of loads for reinforced concrete structures with steel fibers
Año:2019
Áreas de investigación
  • Ingeniería civil y arquitectura
Datos
Descripción
This paper analyzes the possibility of redistributing stresses in reinforced concrete structures with steel fibers (SFRC) in comparison with conventional concrete structures (CC). Instruction EHE 08 allows during the structural analysis to perform a limited redistribution of the loads calculated in elastic and linear regime that satisfies the equilibrium conditions and always linked to ductility conditions of the critical sections that guarantee the necessary deformations for the laws of solicitations adopted after redistribution. The level of redistribution allowed by Instruction EHE 08 depends on the relationship between the depth of the neutral fiber and the useful edge of the section. This magnitude is closely related to the plastic turning capacity of the section. In a CC the plastic turning capacity is conditioned by the ultimate deformation of the concrete, 3.5 ?, or by the ultimate deformation of the steel 10 ?. In the vast majority of occasions the ultimate deformation of the concrete is the one that fixes the plastic turning capacity, since the deformation of the steel is reached before that of the concrete for relations x /d?0.29, a value that is rarely reached in the practice. In SFRC the ultimate deformation of the concrete is much higher than 3.5 ?, so the turning capacity is also. This means that with the same depth of neutral fiber, the turning capacity of an EHRFA is higher than that of an CC.
Internacional
Si
Nombre congreso
IV International Conference on Technological Innovation in Builiding. CITE 2019
Tipo de participación
960
Lugar del congreso
Universidad Politécnica de Madrid
Revisores
Si
ISBN o ISSN
978-84-16397-88-4
DOI
Fecha inicio congreso
06/03/2019
Fecha fin congreso
08/03/2019
Desde la página
268
Hasta la página
269
Título de las actas
Libro de Actas CITE 2019
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Patología de estructuras, protecciones colectivas y medios auxiliares de edificación.
  • Departamento: Tecnología de la Edificación
  • Departamento: Construcciones Arquitectónicas y su Control