Ductility and redistribution of loads for reinforced concrete structures with steel fibers

Sánchez Pérez, José Luis and Gómez de la Peña, Enrique and Prieto Barrio, María Isabel and González García, María de las Nieves (2019). Ductility and redistribution of loads for reinforced concrete structures with steel fibers. In: "4º Congreso Internacional de Innovación Tecnológica en Edificación (CITE 2019)", 6-8 marzo 2019, Madrid, España. ISBN 978-84-1639-788-4. pp. 268-269.

Description

Title: Ductility and redistribution of loads for reinforced concrete structures with steel fibers
Author/s:
  • Sánchez Pérez, José Luis
  • Gómez de la Peña, Enrique
  • Prieto Barrio, María Isabel
  • González García, María de las Nieves
Item Type: Presentation at Congress or Conference (Other)
Event Title: 4º Congreso Internacional de Innovación Tecnológica en Edificación (CITE 2019)
Event Dates: 6-8 marzo 2019
Event Location: Madrid, España
Title of Book: Libro de actas = Abstracts book
Date: 2019
ISBN: 978-84-1639-788-4
Subjects:
Freetext Keywords: SFRC, Ductility, Redistribution, Concrete, EHE
Faculty: E.T.S. de Edificación (UPM)
Department: Construcciones Arquitectónicas y su Control
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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 [1] 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 [1]. 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 higherthan 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.

More information

Item ID: 64561
DC Identifier: http://oa.upm.es/64561/
OAI Identifier: oai:oa.upm.es:64561
Deposited by: Memoria Investigacion
Deposited on: 20 Nov 2020 11:06
Last Modified: 20 Nov 2020 11:06
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