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DC Field | Value | Language |
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dc.contributor.author | Fairclough, HE | - |
dc.contributor.author | Gilbert, M | - |
dc.contributor.author | Pichugin, A | - |
dc.contributor.author | Tyas, A | - |
dc.contributor.author | Firth, I | - |
dc.date.accessioned | 2018-09-04T10:19:47Z | - |
dc.date.available | 2018-09-04T10:19:47Z | - |
dc.date.issued | 2018-09-19 | - |
dc.identifier | 20170726 | - |
dc.identifier.citation | Fairclough, H.E., Gilbert, M., Pichugin, A.V., Tyas, A. and Firth, I. (2018) 'Theoretically optimal forms for very long-span bridges under gravity loading', Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 474 (2217), 20170726, pp. 1-21. doi: 10.1098/rspa.2017.0726. | en_US |
dc.identifier.issn | 1364-503X | - |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/16778 | - |
dc.description | Electronic supplementary material is available online at https://doi.org/10.6084/m9. figshare.c.4218686. | - |
dc.description.abstract | © 2018 The Authors. Long-span bridges have traditionally employed suspension or cable-stayed forms, comprising vertical pylons and networks of cables supporting a bridge deck. However, the optimality of such forms over very long spans appears never to have been rigorously assessed, and the theoretically optimal form for a given span carrying gravity loading has remained unknown. To address this we here describe a new numerical layout optimization procedure capable of intrinsically modelling the self-weight of the constituent structural elements, and use this to identify the form requiring the minimum volume of material for a given span. The bridge forms identified are complex and differ markedly to traditional suspension and cable-stayed bridge forms. Simplified variants incorporating split pylons are also presented. Although these would still be challenging to construct in practice, a benefit is that they are capable of spanning much greater distances for a given volume of material than traditional suspension and cable-stayed forms employing vertical pylons, particularly when very long spans (e.g. over 2 km) are involved. | en_US |
dc.description.sponsorship | Engineering and Physical Sciences Research Council and Expedition Engineering Ltd | en_US |
dc.format.extent | 1 - 21 | - |
dc.language.iso | en | en_US |
dc.publisher | Royal Society | en_US |
dc.rights | © 2018 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | bridges | en_US |
dc.subject | catenary of equal strength | en_US |
dc.subject | structural optimization | en_US |
dc.subject | layout optimization | en_US |
dc.title | Theoretically optimal forms for very long span bridges under gravity loading | en_US |
dc.type | Article | en_US |
dc.identifier.doi | https://10.1098/rspa.2017.0726 | - |
dc.relation.isPartOf | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences | - |
pubs.issue | 2217 | - |
pubs.publication-status | Published | - |
pubs.volume | 474 | - |
dc.identifier.eissn | 1471-2946 | - |
Appears in Collections: | Dept of Mathematics Research Papers |
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