RESEARCH ARTICLE


Viscoelasticity and Damage Model for Creep Behavior of Historical Masonry Structures



Pere Roca, Miguel Cervera, Luca Pelá*, Roberto Clemente, Michele Chiumenti
Technical University of Cata-lonia (UPC), Campus Norte, Jordi Girona 1-3, 08034 Barcelona, Spain.


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Creative Commons License
© 2012 Roca et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Technical University of Cata-lonia (UPC), Campus Norte, Jordi Girona 1-3, 08034 Barcelona, Spain; Tel: +34934011036; Fax: +34934054135; E-mail: luca.pela@upc.edu


Abstract

This paper presents a continuum model for the simulation of the viscous effects and the long-term damage ac-cumulation in masonry structures. The rheological model is based on a generalized Maxwell chain representation with a constitutive law utilizing a limited number of internal variables. Thanks to its computational efficiency, this approach is suitable for the analysis of large and complex structures. In the paper, the viscous and damage models are presented and their coupling is discussed. The FE simulation of the construction process of the representative bay of Mallorca Cathedral is presented, together with the analysis of the long-term effects. The parameters of the model are tentatively calibrated on the basis of the time-dependent viscous deformations detected during the cathedral monitoring.

Keywords: Masonry, Viscosity, Creep, Long-term effects, Geometric Nonlinearity, Historical Con-structions, Gothic Cathedral.