Computational Technology Resources - CCP

Keywords: macro-element, discrete element, monumental structures, push-over analysis..

Summary

The seismic assessment and subsequent rehabilitation of historical masonry structures constitutes a contemporary issue in most seismic regions around the world and particularly in Europe where monumental buildings represent a significant cultural heritage which must be preserved. In most cases seismic retrofitting projects of monumental structures have been performed without first proceeding to a reliable assessment of the actual structural conditions. This apparent paradox is mainly due to difficulties related to the numerical prediction of the seismic behaviour of monumental structures. Refined finite element numerical models, such as the smeared cracked and discrete crack finite element models, able to predict the complex non-linear dynamic mechanical behaviour and the degradation of the masonry media, need sophisticated constitutive laws and significant computational cost. As a consequence, these methods are nowadays unsuitable for practical application and extremely difficult to apply to large structures. Many authors developed simplified or alternative methodologies that, with a reduced computational effort, should be able to provide numerical results that can be considered sufficiently accurate for engineering practice purposes. However, most of these methods are based on too simplified hypotheses that make these approaches inappropriate for monumental buildings.

In this paper a new discrete-modelling approach, conceived for the seismic assessment of a monumental structure, is applied to a benchmark historical basilica church for which results are available in the literature. The proposed numerical strategy represents the first introduction of the discrete-element approach able to represent masonry structures with curved geometry and, at the same time, to simulate both the in-plane and the out of plane response of masonry media.

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £65 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 106 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: Paper 78 The Seismic Assessment of Historical Masonry Structures S. Caddemi, I. Caliò, F. Cannizzaro and B. Pantò Dipartimento Ingegneria Civile e Architettura, University of Catania, Italy doi:10.4203/ccp.106.78 purchase the full-text of this paper Full Bibliographic Reference for this paper , "The Seismic Assessment of Historical Masonry Structures", in , (Editors), "Proceedings of the Twelfth International Conference on Computational Structures Technology", Civil-Comp Press, Stirlingshire, UK, Paper 78, 2014. doi:10.4203/ccp.106.78 Keywords: macro-element, discrete element, monumental structures, push-over analysis.. Summary The seismic assessment and subsequent rehabilitation of historical masonry structures constitutes a contemporary issue in most seismic regions around the world and particularly in Europe where monumental buildings represent a significant cultural heritage which must be preserved. In most cases seismic retrofitting projects of monumental structures have been performed without first proceeding to a reliable assessment of the actual structural conditions. This apparent paradox is mainly due to difficulties related to the numerical prediction of the seismic behaviour of monumental structures. Refined finite element numerical models, such as the smeared cracked and discrete crack finite element models, able to predict the complex non-linear dynamic mechanical behaviour and the degradation of the masonry media, need sophisticated constitutive laws and significant computational cost. As a consequence, these methods are nowadays unsuitable for practical application and extremely difficult to apply to large structures. Many authors developed simplified or alternative methodologies that, with a reduced computational effort, should be able to provide numerical results that can be considered sufficiently accurate for engineering practice purposes. However, most of these methods are based on too simplified hypotheses that make these approaches inappropriate for monumental buildings. In this paper a new discrete-modelling approach, conceived for the seismic assessment of a monumental structure, is applied to a benchmark historical basilica church for which results are available in the literature. The proposed numerical strategy represents the first introduction of the discrete-element approach able to represent masonry structures with curved geometry and, at the same time, to simulate both the in-plane and the out of plane response of masonry media. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions