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

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

Descripción

Título: A methodology to calibrate structural finite element models for reinforced concrete structures subject to blast loads
Autor/es:
  • Bermejo Castro, Mario
  • Santos Yanguas, Anastasio Pedro
  • Goicolea Ruigómez, José María
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: IX International Conference on Structural Dynamics, EURODYN2014
Fechas del Evento: 30 Junio-2 Julio 21014
Lugar del Evento: Oporto. Portugal
Título del Libro: Proceedings of the IX International Conference on Structural Dynamics, EURODYN2014
Fecha: 2014
ISBN: 978-972-752-165-4
Materias:
Escuela: E.T.S.I. de Minas y Energía (UPM)
Departamento: Ingeniería Geológica y Minera
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 36297
Identificador DC: http://oa.upm.es/36297/
Identificador OAI: oai:oa.upm.es:36297
URL Oficial: http://paginas.fe.up.pt/~eurodyn2014/
Depositado por: Memoria Investigacion
Depositado el: 02 Jul 2015 07:13
Ultima Modificación: 02 Jul 2015 07:13
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