Erzincan Değirmenliköy Kilisesi apsis hasarının teknik olarak araştırılması

Abstract

Highlights:Graphical/Tabular Abstract  Historic masonry structure  Operational modal analysis  Earthquake damage investigationErzincan is an Anatolian city that has experienced numbers of destructive earthquakes throughout its history. The strong ground motions like 1939 and 1992 Erzincan earthquakes caused loss of thousands of lives and total collapse of lots of buildings at the city centre; including historic buildings. From this point of view, Erzincan Değirmenliköy Church deserves a special attention. Being located very close to active faults, this historic masonry church is one of the rare historical buildings that survived these earthquakes. Although the main body of the building is completely standing, it is rumoured that the abscissa was destroyed during the 1939 Erzincan Earthquake. The authors of this article have carried out this study to examine the accuracy of this narration from a technical point of view. Figure A. Current situation of Erzincan Degirmenlikoy Church and the related structural model Purpose: The main purpose of the study is to understand dynamic behavior and technical reason of the loss of abscissa of Erzincan Degirmenlikoy church. Theory and Methods:Technical information was collected about the church and a structural model that represents the current situation was created by using macro modelling technique. Mechanical properties of the masonry were obtained mainly by non-destructive tests and equations provided by Eurocode 6. Structural analysis model was calibrated via operational modal analysis through the dynamic behaviour parameters; the destroyed abscissa was speculated and added to the model. Dynamic analyses were performed by using earthquake records on the model with abscissa attachment. The seismic behaviour of the church was then evaluated over calculated deformation and stress values. Results:As a main result of the research; it was concluded that the church abscissa may have been damaged over the connection zones with the whole body of the structure during the earthquake and then separated from the structure by the time passed. Conclusion:Erzincan Değirmenliköy Church was studied for the first time from the technical point of view and its structural features were examined. As such, technical resources have been created for a possible restoration work in the future. It is thought that repeating the analysis with the synthetic earthquake record to be produced for the 1939 Erzincan earthquake will allow a more reliable examination of the structural behavior.

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“…For instance, there are studies on the optimum design and cost optimization of rectangular reinforced concrete sections [11], studies that utilize artificial bee colony algorithms to optimize the total cost of reinforced concrete frames based on demand-to-capacity ratios of structural elements [12], and studies focusing on the optimum cost design optimization of various structural elements such as slabs, aiming to reduce the total cost including concrete and reinforcement steel [13,14]. Studies exist on shape optimization of concrete arches with different forms of structural types [15], as well as studies on topology optimization of voids in external walls [16], various structural topology optimization studies [17,18] and obtaining optimal values of technical analysis data for walls through efficient methods [19]. Bayrak et al [20] performed the optimization of concrete pavements based on their mechanical properties.…”

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