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Keywords: macro-element, historical masonry buildings, unreinforced masonry, masonry, monumental buildings, seismic assessment, cultural heritage protection, historical structures analysis, HiStrA software.

Summary

The evaluation of the nonlinear dynamic response of masonry monumental structures still represents a complex issue. A rigorous approach requires ad hoc computational strategies, difficult to apply to large structures hence unsuitable for practical applications. However, for the structural assessment of existing monumental structures engineers need robust and efficient numerical tools, where the complexity and computational demand should be suitable for practical purposes. For these reasons the formulation and validation of simplified numerical strategies constitutes an important research issue in masonry computational research. In this paper the computational performance of an original discrete element modelling approach, relying on the definition of a spatial macro element, for the simulation of both the in-plane and out-of-plane behaviour of masonry structures with curved geometry is investigated. The mechanical response of the element is governed by a discrete distribution of nonlinear links where the calibration follows straightforward fiber discretization. The approach may be defined as 'parsimonious' since the kinematics of the element is described by seven degrees of freedom only irrespectively of the number of the nonlinear links that govern the constitutive response. The new macro-element has been implemented in the user-oriented software code HiStrA, which simplifies the modelling of historical structures by means of several wizard generation tools. The proposed model, representing a further tool for the structural assessment of historical masonry structures, is validated against numerical and experimental results involving typical masonry monumental sub-structural elements.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 82 A Parsimonious Discrete Model for the Seismic Assessment of Monumental Structures S. Caddemi, I. Caliò, F. Cannizzaro, G. Occhipinti and B. Pantò Dipartimento Ingegneria Civile e Architettura, University of Catania, Italy doi:10.4203/ccp.108.82 purchase the full-text of this paper Full Bibliographic Reference for this paper , "A Parsimonious Discrete Model for the Seismic Assessment of Monumental Structures", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 82, 2015. doi:10.4203/ccp.108.82 Keywords: macro-element, historical masonry buildings, unreinforced masonry, masonry, monumental buildings, seismic assessment, cultural heritage protection, historical structures analysis, HiStrA software. Summary The evaluation of the nonlinear dynamic response of masonry monumental structures still represents a complex issue. A rigorous approach requires ad hoc computational strategies, difficult to apply to large structures hence unsuitable for practical applications. However, for the structural assessment of existing monumental structures engineers need robust and efficient numerical tools, where the complexity and computational demand should be suitable for practical purposes. For these reasons the formulation and validation of simplified numerical strategies constitutes an important research issue in masonry computational research. In this paper the computational performance of an original discrete element modelling approach, relying on the definition of a spatial macro element, for the simulation of both the in-plane and out-of-plane behaviour of masonry structures with curved geometry is investigated. The mechanical response of the element is governed by a discrete distribution of nonlinear links where the calibration follows straightforward fiber discretization. The approach may be defined as 'parsimonious' since the kinematics of the element is described by seven degrees of freedom only irrespectively of the number of the nonlinear links that govern the constitutive response. The new macro-element has been implemented in the user-oriented software code HiStrA, which simplifies the modelling of historical structures by means of several wizard generation tools. The proposed model, representing a further tool for the structural assessment of historical masonry structures, is validated against numerical and experimental results involving typical masonry monumental sub-structural elements. 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 £75 +P&P)
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