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Title: | Influence of environmental degradation on dynamic properties of masonry bridges |
Authors: | Benedetti, A Nichols, J Tomor, A |
Keywords: | masonry;FE models;damage patterns;frequency decay |
Issue Date: | 9-Jun-2016 |
Publisher: | CRC Press (Taylor & Francis Group) |
Citation: | Brick and Block Masonry: Trends, Innovations and Challenges - Proceedings of the 16th International Brick and Block Masonry Conference, IBMAC 2016, 2016, pp. 1029 - 1036 |
Abstract: | © 2016 Taylor & Francis Group, London. The paper presents some preliminary analyses devoted to the identification of suitable models able to provide the frequency decay of a damaged masonry structure on the basis of the observed damage pattern. In particular the analysis will be carried out with reference to some comparison FE models, and by introducing two distinct damage patterns, i.e. an elastic modulus decay of an external layer of the bridge arch, or a localised reduction of section due to impact or brick and stone detachments. The worked out examples allow checking of a very simple formulation based on the frequency evaluation through the static displacement equivalence of energy, and the splitting of the curvature diagram in the average part plus an added impulse term due to the presence of defects. The proposed formula is in good agreement with the FE analyses and sufficiently simple to be used for the detection of the damaged material properties, as a function of the average frequency decay. |
Description: | Brick and Block Masonry - Trends, Innovations and Challenges contains the lectures and regular papers presented at the 16th International Brick and Block Masonry Conference (Padova, Italy, 26-30 June 2016). In an ever-changing world, in which innovations are rapidly implemented but soon surpassed, the challenge for masonry, the oldest and most traditional building material, is that it can address the increasingly pressing requirements of quality of living, safety, and sustainability. This abstracts volume and full paper USB device, focusing on challenges, innovations, trends and ideas related to masonry, in both research and building practice, will proof to be a valuable source of information for researchers and practitioners, masonry industries and building management authorities, construction professionals and educators. |
URI: | http://bura.brunel.ac.uk/handle/2438/20320 |
ISBN: | 9781138029996 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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