Fracture of concrete structural members subjected to blast

Morales Alonso, Gustavo and Cendón Franco, David Ángel and Gálvez Díaz-Rubio, Francisco and Sanchez Galvez, Vicente (2013). Fracture of concrete structural members subjected to blast. In: "International Conference on Fracture Mechanics of Concrete and Concrete Structures", 10/03/2013 - 14/03/2013, Toledo. ISBN 978-84-941004 -1-3. pp..

Description

Title: Fracture of concrete structural members subjected to blast
Author/s:
  • Morales Alonso, Gustavo
  • Cendón Franco, David Ángel
  • Gálvez Díaz-Rubio, Francisco
  • Sanchez Galvez, Vicente
Item Type: Presentation at Congress or Conference (Article)
Event Title: International Conference on Fracture Mechanics of Concrete and Concrete Structures
Event Dates: 10/03/2013 - 14/03/2013
Event Location: Toledo
Title of Book: Fracture Mechanics of Concrete and Concrete Structures. Proceedings of the 8 th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS - 8) , held in Toledo, Spain 11 – 14 March 2013
Date: 2013
ISBN: 978-84-941004 -1-3
Subjects:
Freetext Keywords: Cohesive fracture, embedded crack,high strain rate, blast loading
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería de Organización, Administración de Empresas y Estadística
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

If reinforced concrete structures are to be safe under extreme impulsive loadings such as explosions, a broad understanding of the fracture mechanics of concrete under such events is needed. Most buildings and infrastructures which are likely to be subjected to terrorist attacks are borne by a reinforced concrete (RC) structure. Up to some years ago, the traditional method used to study the ability of RC structures to withstand explosions consisted on a choice between handmade calculations, affordable but inaccurate and unreliable, and full scale experimental tests involving explosions, expensive and not available for many civil institutions. In this context, during the last years numerical simulations have arisen as the most effective method to analyze structures under such events. However, for accurate numerical simulations, reliable constitutive models are needed. Assuming that failure of concrete elements subjected to blast is primarily governed by the tensile behavior, a constitutive model has been built that accounts only for failure under tension while it behaves as elastic without failure under compression. Failure under tension is based on the Cohesive Crack Model. Moreover, the constitutive model has been used to simulate the experimental structural response of reinforced concrete slabs subjected to blast. The results of the numerical simulations with the aforementioned constitutive model show its ability of representing accurately the structural response of the RC elements under study. The simplicity of the model, which does not account for failure under compression, as already mentioned, confirms that the ability of reinforced concrete structures to withstand blast loads is primarily governed by tensile strength.

More information

Item ID: 29931
DC Identifier: http://oa.upm.es/29931/
OAI Identifier: oai:oa.upm.es:29931
Official URL: http://www.framcos8.org/frontal/default.asp
Deposited by: Memoria Investigacion
Deposited on: 05 Dec 2014 19:28
Last Modified: 25 Sep 2018 06:44
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