Analysis of the out-of-plane buckling collapse of a masonry wall: A case study

This paper presents the methodologies followed and the analyses performed to interpret the out-of-plane collapse of a masonry wall located on the fourth floor of a historical building in Palermo (Italy). The collapse mechanism was related to the slenderness of the wall and the presence of ineffective tie rods, unable to restrain the wall. Moreover, the collapse involved the wooden slabs, loaded under the impact of the wall. The case is analysed by examining the crack pattern, the constructive features and the kinematic of the collapse. Finally, a theoretical interpretation of the buckling mechanism is made through non-linear Finite Element (FE) analyses combined with simplified models provided in the literature, showing as reliable considerations can be made by combining two levels of analysis

Procedure for Safety Assessment and BIM Modelling of an Historical Complex Structure through a Macroelement Approach: The Building “Molino-Pastificio Soresi” of Partinico

The structural assessment of existing historical structures is a complex task due to the inner main difficulty in making up reliable models for structural analysis, able to include mechanical and geometrical nonlinearities, existing damage, complex configurations and arrangements of materials. This task becomes more difficult in mixed RC-masonry structures, which structural modelling can be particularly tough due to the different connections and interactions between structural members and materials. This paper presents the case study of a multi-storey mixed Reinforced Concrete (RC)- masonry historical structure, namely the former mill “Molino-Pastificio Soresi” building, located in Partinico (Sicily—Italy). It is shown as it is possible to obtain an accurate and detailed representation of the building, as well as a reliable structural model. The assessment of the seismic vulnerability from the global point of view of the considered case study is carried out through a multidisciplinary approach based on four stages: (1) historic analysis and study of the relevance of the building; (2) geometrical survey and photographic documentation; (3) structural identification and materials; (4) BIM implementation and structural modelling

Tecniche di intervento per il recupero strutturale

La tutela del patrimonio storico-architettonico esistente si configura quale esigenza imprescindibile al fine di preservare l’identità storica e culturale dei luoghi. I numerosi eventi sismici che negli ultimi decenni hanno interessato il territorio italiano hanno messo in evidenza l’elevata vulnerabilità dell’edificato esistente ed hanno posto l’accento sulla necessità di programmare e realizzare interventi mirati alla riduzione di tale vulnerabilità. In particolare, i maggiori danni provocati da eventi sismici si riscontrano nei centri storici dove la quasi totalità delle costruzioni è realizzata in muratura con tecniche costruttive molto spesso non adeguate a fronteggiare gli effetti del sisma