Strengthening of masonry vaults with transversal diaphragms: a numerical approach

Abstract

The compatible strengthening of historical constructions is a critical issue in modern restoration practice. Among others, numerical modelling became a powerful instrument in the practice of checking the suitability and effectiveness of a given structural strengthening solution. In particular, the topic of numerical modelling of masonry arches and vaults was developed by many researchers for several years. This paper is focused on the numerical representation of a traditional strengthening technique, based on the use of transversal masonry diaphragms applied to arches and vaults. Macro and micromodelling approaches were considered in this work as to discuss the adequacy and efficiency of the strengthened method and also compare results between the two approaches. To further define the properties and effectiveness of the strengthening solution, a parametric study was conducted by means of geometrical and mechanical modifications applied to the diaphragms.