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Behaviour of backfilled masonry arch bridges subjected to cyclic loading

Augusthus Nelson, L, Swift, GM, Smith, C, Gilbert, M and Melbourne, C 2016, Behaviour of backfilled masonry arch bridges subjected to cyclic loading , in: 8th International Conference on Arch Bridges, October 5-7, 2016, Wrocław, Poland.

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Experimental research has demonstrated that the interaction between soil fill surrounding the arch barrel of a masonry arch bridge structure has a significant influence on ultimate limit state behaviour. However, little work has been carried out to date to examine the behaviour of soil filled bridges at the permissible limit state, PLS (defined as the state which, if not exceeded, will ensure the lifespan of the bridge is not measurably reduced by repeated live loading). Tests on a masonry arch bridge backfilled with crushed limestone fill material and subjected to 106 cycles of 50kN peak cyclic load amplitude (approximately one third of the collapse load) indicate that the initial stiffness and ultimate load carrying capacity of the soil-arch system is not adversely affected by this level of cyclic loading. However in follow up tests on a similar bridge, the peak cyclic load amplitude was incrementally increased from 60kN to 100kN (with 105 cycles at each load level), which was found to cause increasing levels of damage to the arch barrel, in turn reducing the stiffness of the bridge to applied loads.

Item Type: Conference or Workshop Item (Paper)
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Funders: Engineering and Physical Sciences Research Council (EPSRC)
Depositing User: L Augusthus Nelson
Date Deposited: 06 May 2016 14:48
Last Modified: 11 Oct 2016 07:37

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