A methodology to calibrate structural finite element models for reinforced concrete structures subject to blast loads

Bermejo Castro, Mario and Santos Yanguas, Anastasio Pedro and Goicolea Ruigómez, José María (2014). A methodology to calibrate structural finite element models for reinforced concrete structures subject to blast loads. In: "IX International Conference on Structural Dynamics, EURODYN2014", 30 Junio-2 Julio 21014, Oporto. Portugal. ISBN 978-972-752-165-4. pp. 3497-3502.

Description

Title: A methodology to calibrate structural finite element models for reinforced concrete structures subject to blast loads
Author/s:
  • Bermejo Castro, Mario
  • Santos Yanguas, Anastasio Pedro
  • Goicolea Ruigómez, José María
Item Type: Presentation at Congress or Conference (Article)
Event Title: IX International Conference on Structural Dynamics, EURODYN2014
Event Dates: 30 Junio-2 Julio 21014
Event Location: Oporto. Portugal
Title of Book: Proceedings of the IX International Conference on Structural Dynamics, EURODYN2014
Date: 2014
ISBN: 978-972-752-165-4
Subjects:
Faculty: E.T.S.I. de Minas y Energía (UPM)
Department: Ingeniería Geológica y Minera
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Civil buildings are not specifically designed to support blast loads, but it is important to take into account these potential scenarios because of their catastrophic effects, on persons and structures. A practical way to consider explosions on reinforced concrete structures is necessary. With this objective we propose a methodology to evaluate blast loads on large concrete buildings, using LS-DYNA code for calculation, with Lagrangian finite elements and explicit time integration. The methodology has three steps. First, individual structural elements of the building like columns and slabs are studied, using continuum 3D elements models subjected to blast loads. In these models reinforced concrete is represented with high precision, using advanced material models such as CSCM_CONCRETE model, and segregated rebars constrained within the continuum mesh. Regrettably this approach cannot be used for large structures because of its excessive computational cost. Second, models based on structural elements are developed, using shells and beam elements. In these models concrete is represented using CONCRETE_EC2 model and segregated rebars with offset formulation, being calibrated with continuum elements models from step one to obtain the same structural response: displacement, velocity, acceleration, damage and erosion. Third, models basedon structural elements are used to develop large models of complete buildings. They are used to study the global response of buildings subjected to blast loads and progressive collapse. This article carries out different techniques needed to calibrate properly the models based on structural elements, using shells and beam elements, in order to provide results of sufficient accuracy that can be used with moderate computational cost.

More information

Item ID: 36297
DC Identifier: http://oa.upm.es/36297/
OAI Identifier: oai:oa.upm.es:36297
Official URL: http://paginas.fe.up.pt/~eurodyn2014/
Deposited by: Memoria Investigacion
Deposited on: 02 Jul 2015 07:13
Last Modified: 02 Jul 2015 07:13
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