Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2024Scopus SJRQ1/r/bayburt/11817
  A case study comparing seismic retrofitting techniques for a historically significant masonry building's minaret

  Kiral, Adnan; Ergün, Mustafa; Tonyali, Zeliha; Artar, Musa; Şentürk, İdris

  Historical masonry structures are extremely susceptible to earthquakes due to their characteristic features. Seismic performance and corresponding damage patterns vary between these buildings. Even though the main structure was undamaged, many minarets suffered damage or collapsed due to the transmission of large forces from the main mass to the minaret and the abrupt changes in cross-section due to the geometry of the minaret. This study uses an ancient masonry mosque as a case study, whose minaret and main building are constructed as a single structure. The mosque's minaret under seismic excitation is the focus of this study. The adopted model is called Alaeddin Bey Mosque in Muş, Türkiye. The seismic performance assessment of the minaret, considering various retrofitting options, is mainly based on four critical parameters: base shear, acceleration, displacement, and maximum tensile forces in all three dimensions. The analyzed retrofitting methods include base isolation located in the basement of the mosque, viscous dampers placed only in the upper part of the minaret, Carbon Fiber-Reinforced Polymer fabric fitted to only the minaret, and steel plates applied to only the minaret. Representative structural models of the mosque have been modelled with SAP2000 software. The main novelty of this study is the use of viscous dampers in the minaret. It is the first time a design methodology has been introduced for viscous damper applications in minarets. This methodology aims to prevent local damage to the minaret due to the forces generated by the dampers, while also considering the constraints of limited internal space within the minaret. The finding of this study shows that viscous damper application yields significantly better results compared to the application of Carbon Fiber-Reinforced Polymer fabric and steel plates. However, although base isolation reduces the tensile stress values throughout the entire mosque to levels well below the material's strength, viscous damper application in the minaret significantly reduces tensile stresses only in the minaret. As a result, viscous dampers are recommended for damage reduction in the minaret only. Otherwise, base isolation should be considered for reducing stress values throughout the entire mosque including the minaret. This study contributes towards the development of new seismic retrofitting methods for historic masonry buildings ‘minaret.

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  AtıfScopus26·WoS26·OpenAlex24

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• MakaleYalnız künye2022Scopus SJRQ1/r/bayburt/13430
  Seismic behavior assessment of historical Alaeddin Bey Mosque and strengthening suggestions by CFRP fabric and steel plate

  Şentürk, İdris; Ergün, Mustafa; Artar, Musa

  In this study, the effects of different strengthening methods that can be applied for earthquake-damaged historical masonry structures on structural performance were investigated. For this purpose, the Historical Alaeddin Bey Mosque in the central district of Muş was modeled in three dimensions according to the macromodeling technique using the finite element method in the SAP2000 program. The earthquake performance of the structure was determined by considering the earthquake-acceleration records of Erzincan, Kocaeli, and Van, respectively. The maximum tensile and compressive stresses in all three directions on the structural elements were taken into account as the earthquake behavior parameters of the structure. According to the earthquake analysis made in the time domain, it was determined that the polygonal pulpit of the minaret was at risk of being damaged under the effect of the Erzincan earthquake, and it has been concluded that this region should be strengthened. The damaged area of the minaret was strengthened by the application of CFRP fabric and steel plate materials (together or separately) in five different ways, from inside and outside and at different distance intervals. The conclusions obtained as a result of the earthquake analyses on the reinforced models were examined, and it was explained in detail with the help of tables and graphics that method would be more effective in strengthening such damages.

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  AtıfScopus40·WoS39·OpenAlex41

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• Yüksek Lisans TeziAçık Erişim2021/r/bayburt/17182
  Tarihi Alaeddin Bey camisinin deprem davranışının belirlenmesi ve farklı güçlendirme tekniklerinin araştırılması

  İdris Şentürk

  Ülkemizde geçmişten günümüze aktarılan birçok tarihi yapı bulunmaktadır. Bu yapılar birbirinden farklı zamanlarda inşa edilmiş, yapım şekilleri, kullanılan malzemeler ve işçilik gibi detaylar bakımından oldukça ihtişamlı ve dikkat çekicidir. Binlerce yıllık geçmişe sahip bu kültürel mirasların, yapısal bütünlükleri korunarak gelecek nesillere de aktarılması çok önemlidir. Bu nedenle tarihi yapıların mevcut durumlarının incelenmesi ve deprem performanslarının bilinmesi gerekir. Bu çalışmada, Muş İli merkezinde bulunan 1746-1748 yılları arasında inşa edilmiş olan tarihi Alaeddin Bey Camisi, sonlu elemanlar yöntemine göre çalışan SAP2000 programında üç boyutlu olarak modellenmiştir. Tarihi yapının deprem performansının belirlenmesi için bazı gerçek deprem kayıtları (13 Mart 1992 Erzincan, 23 Ekim 2011 Van-Erciş ve 17 Ağustos 1999 Kocaeli) yapıya uygulanmıştır. Analiz sonuçları incelendiğinde dinamik yükler etkisi altında yapının yeterli dayanıma sahip olmadığı kısımlar tespit edilmiştir. Belirlenen riskli bölgelere Karbon Fiber Takviyeli Polimer (KFTP) ve çelik plaka ile güçlendirme alternatifleri denenerek hasar risklerinin meydana gelmemesi hedeflenmiştir.

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