Influence of the span rise ratio on the capacity of masonry arch bridges

Donaghy, J, Wang, J and Augusthus Nelson, L ORCID: https://orcid.org/0000-0003-3092-7635 2014, Influence of the span rise ratio on the capacity of masonry arch bridges , in: 9th International Masonry Conference, 7-9 July 2014, Guimarães, Portugal.

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Abstract

Current standards promote a holistic approach in appraisal of masonry arch bridges. This is derived from the aspect of a perfect arch with specific span rise ratios. The MEXE (Military Engineering Experimental Establishment) method used as first stage assessment of masonry arch bridges in the United Kingdom sets the default span rise ratio at 4.0 with a standard independent factor applied to account for different span rise ratios. The accuracy is questionable as it does not account for the influence of different parameters. This paper aims to investigate a more precise method to account for the span rise ratio. A parametric study of Pippard’s equation was conducted, analysing the effect on the span rise ratio. An Excel model was designed to undertake large data analysis for different span rise ratios. This confirmed inaccuracy in the MEXE method allowing an increase in capacity by 40% for specific conditions.

Item Type:	Conference or Workshop Item (Paper)
Schools:	Schools > School of Computing, Science and Engineering
Related URLs:	Organisation
Funders:	Non funded research
Depositing User:	J Wang
Date Deposited:	16 Nov 2015 11:10
Last Modified:	15 Feb 2022 19:54
URI:	http://usir.salford.ac.uk/id/eprint/37034

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