Parametric failure analysis of scaled Persian brick masonry arches by experimental tests

Abstract

In this paper, the effect of different parameters on the structural behaviour of scaled brick masonry arches is studied by conducting experimental tests and numerical analysis using the non-linear three-dimensional finite element. Arches at a scale 1:20 made of clay brick and gypsum mortar are constructed in the laboratory. Seven shapes of Persian arches are selected for the arches. Arches are under concentrated load once applied at the mid-span and once applied at the quarter-span. Some arches are subjected to the vertical displacement of the support. Other parameters studied are the angle of the embrace and the variation of the thickness. Results indicate that imposing a concentrated load at the mid-span is more critical than at the quarter-span. Arches with higher rises show higher capacities. The pointed arch is the most sensitive arch to the support vertical displacement. Smaller angles of embrace result in reducing the load-bearing capacity and the rate of reducing the capacity is similar for different arch shapes. The semi-circular arch has the greatest resistance to the vertical displacement of the support. The load location, quarter-span, and supports are prone to cracking and crushing.