• Engineer Emre Çeçen - Acting Dean of the Faculty of Civil Engineering and Architecture of the Universiteti Metropolitan Tirana.

Historical buildings and monuments of built heritage in Albania suffered great damages during the earthquake of 26 November 2019. Most of them have a structural system of traditional load bearing stone masonry. Field observations and the overview of past interventions of several objects, suggested that the reported damages might have underlying causes, which triggered the main damages during the earthquake. This seminar focuses on the outputs of preliminary study of damages of stiff masonry walls in castles and their relationship with the earthquake. We took as a case study the Castle of Bashtova, which is one of the few ?? Albanian Castles located in flat terrain and on poor soil conditions.

The purpose of this study is to link between the recorded damages through the history of the structure and the numerical analysis performed for the purpose of structural consolidation interventions. The performed study contains linear dynamic analysis with the response spectrum procedure for the calculation of stresses, displacements and their distributions, along with checks of the overall stability of the most critical sections with the Virtual Work Principle. The study showed that most of the damages reported after the earthquake were due to local effects of soil deposits or soil-structure interaction, local degradation of masonry and insufficiently connected walls of different phases of construction.

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