Some Developments On The Lateral Strength OfHistorical Reinforced Vaulted Buildings

Different systems of reinforcements can be arranged in order to improve the seismic strength of the historical masonry buildings. The most common one consists in the insertion into the original structure of suitable horizontal devices as steel ties passing trough the masonry walls at the floor levels with anchor plates at the heads. Aim of the paper is to perform a complete analysis of this kind of building when the floors are made up by masonry crossed vaults. The study, which is a development of a previous one, will be performed in the framework of the well known Heyman's limit analysis theory by using the unilateral no tension model for the masonry material. The resistant structure will be made up by walls and floors assembled together and a global building analysis will be performed after a previous separate evaluation of the collapse mechanisms of a single wall and a single floor.