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Civil-Comp Proceedings
ISSN 1759-3433 CCP: 102
PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by:
Paper 67
Computational Limit Analysis of Masonry Panels with Cracking Units using Rigid Block Modelling F. Portioli, L. Cascini, C. Casapulla and M. D'Aniello
Department of Structures for Engineering and Architecture, University of Naples "Federico II", Italy Full Bibliographic Reference for this paper
F. Portioli, L. Cascini, C. Casapulla, M. D'Aniello, "Computational Limit Analysis of Masonry Panels with Cracking Units using Rigid Block Modelling", in , (Editors), "Proceedings of the Fourteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 67, 2013. doi:10.4203/ccp.102.67
Keywords: limit analysis, rigid block, micro-modelling, cracking units, linear programming.
Summary
A rigid block model taking into account failure of the units and cohesive behaviour of the joints was developed for computational limit analysis of masonry panels. Masonry units are discretized into triangular rigid blocks separated by contact interfaces. Tensionless contact interfaces are used to model dry joints and cohesive contacts are introduced for mortared joints and internal unit interfaces. Failure mechanisms of masonry which are taken into account by the implemented model include: joint tension cracking and slip, unit direct and diagonal tension crack, masonry crushing. The limit analysis problem is formulated in terms of iterative linear programming. Results of a validation study carried out against shear wall panels from the literature as well as comparison with other limit analysis formulations are presented.
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