Physical modelling of cyclically loaded masonry arch bridges

Experimental work involving large-scale physical models of backfilled masonry arch bridges is being undertaken to examine the behaviour of these structures under cyclic loading regimes. The aim of this research is to better understand the relationship between real-world loading conditions and the ultimate carrying capacity of masonry arch bridge structures. After briefly summarising recent research on masonry arch bridges, the rationale for the current programme of research is discussed. The design and performance of the test facility used is also briefly described, and some typical results from early experiments are presented. These results are discussed in the context of current masonry arch bridge assessment methods