Case Studies: More results from MArch
Several redundant masonry arch bridges were loaded to collapse in the 1980s in the UK. The tested collapse loads are used here to compare with the computer results of MArch. The ratios of the computed collapse load to test collapse load of the bridges are displayed in the following graph.
It shows that reasonable results are produced from MArch. The consistently conservative results may imply that there were extra supports which might have been caused by spandrel walls or unknown strong backfills in reality.
Interested readers may find the original publications of these bridge tests from TRRL (now TRL), Contractor Report 7(1985) and 26(1986); Research Report 110(1987), 159(1988) and 201(1989).
Input data files of these bridges are available upon the purchase of the software.