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Study of structural behavior and failure mechanism of a typical venetian temple in Crete with one and two aisles due to subsequent interventions

Mesaritaki Aikaterini

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Summary

The aim of this research is to find the common points of the structural pathology of the temples in Cretan countryside that were constructed during the Venetian period of occupation of the island, based on the static and dynamic analysis. The study focuses in two church types the simple basilica and the addition in continuity of a second aisle. These temples are studied as a typical sample of a two aisle church in Crete. The failure mechanism of this typology is investigated by applying the finite element method analysis on designed 3d models. The geometry of the 3d model used for the analysis is based on the documentation of a real structure, the church of st. Antonios in the area of Petali, near the village of Asites in Heraklion, a historical masonry building of the 15th century of two parallel elongated vaulted spaces. The church was build in two construction phases and today the two vaults and the first aisle have collapsed. Therefore the remaining structure offers a wide variety field for research to determine the causes of its failure. The openings of the building, that usually constitute the most vulnerable parts of the construction were designed and studied separately, stone by stone. The possibility of sliding and friction forces were added to investigate the influence of boundary conditions to the dynamic behaviour of the structure. For the study four different finite elements models were analysed, in comparison, two for the simulation of each vaulted structure , the single aisle church and the two aisle church in order to study the static and the dynamic behaviour of these buildings. From the analysis the areas of maximum principal stresses and displacements for each model were determined, in order to understand the structural behavior of the buildings and to identify the cause of some of the principal visible cracks and failures of the existing state of the building.

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