Sürdürülebilir Kalkınma Amaçları

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• MakaleYalnız künye2021/r/bayburt/14540
  Determination of Earthquake Performance of 5-Storey Masonry Building and Suggestions for Strengthening

  Can, Ömer

  Masonry structures in our country are structures with historical features. Generally, it is quite possible to come across masonry structures made using local materials in rural areas of our country. Masonry structures have a wide variety of material and workmanship services without the need for engineering services. As a result, determining the performance under vertical loads and earthquake loads is difficult according to the performance analysis of today's reinforced concrete structures. In this study; Information about the construction technique, material properties and location features of the 5-storey masonry building with ground + 4 floors, located in the city centre of Bayburt, built between 1997-1998. The existing problems observed in the building have been identified. By using the StatiCAD-Masonry program, the performance analysis of the building was made taking into account the 2018 Building Earthquake Code. As a result of the analysis, a method of reinforcing the building with plaster reinforced on one side from the outside and partially on the inside with double-sided reinforced plaster is proposed. While 48 walls were inadequate in terms of pressure and shear stress in the analysis made before the reinforcement, it was concluded in the performance analysis made after the reinforcement that all walls provided the safety stresses and were in immediate use.

  AtıfTR Dizin3

  İncele
• MakaleAçık Erişim2021Scopus SJRQ1/r/bayburt/13510
  Investigation of time-history response of a historical masonry minaret under seismic loads

  Yurdakul, Muhammet; Yılmaz, Fatih; Artar, Musa; Can, Ömer; Öner, Erdal; Daloğlu, Ayşe T.

  This study presents an investigation of the seismic performance of a historical masonry minaret which was built in the 12th century in Bayburt. The minaret was built as masonry with regional stones and handmade bricks. The most important feature of the minaret is its longitudinally conical geometry. An experimental investigation was made to obtain the mechanical properties of the regional stone used in the historical minaret. A three-dimensional Finite Element Model of the historical minaret was created in SAP2000. Three earthquake ground motions such as Erzincan, Kocaeli-Duzce, and Van-Ercis were used to investigate the seismic performance of the historical minaret. The results show that Erzincan, Kocaeli-Duzce and Van-Ercis earthquakes may cause some damages in the same zone of the minaret body since the tensile stresses occurred due to the earthquakes exceed the limit tensile stress of the masonry brick. The use of the data obtained from the experimental investigation of the Bayburt yellow stone in the analysis is important for the reliability of the results.

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  AtıfScopus44·WoS43·OpenAlex44

  İncele
• MakaleAçık Erişim2021Scopus SJRQ3/r/bayburt/13437
  Determination of some engineering properties of volcanic tuff using non-destructive method

  Can, Ömer

  Volcanic tuffs extracted from the quarries of Bayburt province in Turkey are of three different types locally identified as white, yellow and green Bayburt stones. This study was intended to estimate the compressive strength of white, yellow and green Bayburt stones by non-destructive testing methods. For this, non-destructive tests such as the nail penetration test (NPT), Schmidt rebound hammer (SRH) test and ultrasonic pulse velocity (UPV) test were performed. A uniaxial compression test was also performed so as to assess the accuracy of the results obtained from the non-destructive tests. For the NPT, nails manufactured for the gun having 27 and 39 mm length were used. In total, 45 nails were nailed and average the values were taken. Also, uniaxial compressive strength (UCS) and UPV tests were performed on 30 samples in total; furthermore, a total of 60 impacts for the SRH test were performed. The relationship between the results recorded from NPT and UCS, SRH and UPV was determined by regression analysis and comparison. The relative absolute errors between the measured values and the predicted values are below 4% for SRH-NPT comparison and below 9% for UPV-NPT comparison. This method of estimating the compressive strength, by using these non-destructive experiments, was appraised as suitable.

  İncele
• MakaleYalnız künye2020/r/bayburt/14454
  Graphene Additives Effect on Mechanical and Structural Characterization Properties of Polyvinyl Alcohol (PVA) and Boron Based Cement Mortar

  Çaglar, Hakan; Çaglar, Arzu; Can, Omer

  In this study, it was aimed to develop properties of cement paste having standard properties and produce a graphene doped Polyvinyl Alcohol (PVA) and boron-based cement paste in this context. This type of special cement is mixed with PVA as polymer additive material so it can have a higher strength and sufficient elasticity per unit weight. Also, boric acid which can absorb neutrons having poisonous effect in nuclear reactions is added into the cement in order to minimize environmental disaster caused by a nuclear accident. Compressive and bending strengths were measured based on TSE tests of graphene doped PVA and boron-based cement paste. Then, samples were measured by Brunauer-Emmett-Teller Method (BET) and subjected to X-ray Diffraction (XRD). In XRD measurements, crystalline structure was observed in all materials. According to compressive strength tests, as the graphene amount increases compressive strength also increases, however in bending strength tests as the graphene amount increases bending strength decreases. Although the values of bending strength of samples produced decreased with increase of graphene content, these values were found to be above the standard values. In addition to boron, graphene admixture has a significant effect on material with its positive strength properties.

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  AtıfOpenAlex1

  İncele
• MakaleAçık Erişim2020/r/bayburt/14861
  Bor Atıklarının Perlit Esaslı Tuğlanın Mühendislik Özelliklerine Etkisi

  Can, Ömer; Çaglar, Hakan; Çimen, Selçuk; Çağlar, Arzu

  Endüstrinin gelişmesi atıkların oluşumunu beraberinde getirmektedir. Bu atıkların uygun sektörlerde kullanılması atıkların çevreye vereceği zararı minimize etmektedir. Bu atıkların değerlendirildiği alanlardan biri de inşaat sektörünün tuğla koludur. Bu çalışmada yerel malzemelerimizden olan perlit ve kıymetli endüstri atığı olan bor atığının tuğla yapı malzemesi özelliklerinin iyileştirilmesi üzerinde durulmuştur. Çalışmada tuğla bünyesine %5 perlit malzemesi sabit tutularak, %5, %10, %15 ve %20 oranlarında bor atığı ikame ederek tuğla numuneleri üretilmiştir. Üretilen numuneler 900 ° C'de pişirilmiştir. Pişirilme sonucunda elde edilen tuğla numunelerine fiziksel ve mekanik deneyler uygulanmıştır. Fiziksel farklılıklarının tespiti için özgül ağırlık, suya doygun birim hacim ağırlık, porozite ve donma-çözünme deneyleri yapılmıştır. Mekanik özelliklerinin tespiti için ise tuğla numunelerine basınç dayanımı ve eğilmede çekme dayanımı deneyleri uygulanmıştır. Sonuç olarak; perlit ve bor atığı katkısının uygun oranlarda tuğla üretiminde kullanılabileceği, kullanılması durumunda tuğla özelliklerine herhangi bir sakıncası olmadığı ve olumlu yönde etki sağladığı görülmüştür.

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  AtıfOpenAlex8·TR Dizin4

  İncele
• MakaleAçık Erişim2020Scopus SJRQ4/r/bayburt/13158
  Analysis of shear walls for a suitable opening

  Can, Ömer; Tayfur, Bilal

  The main purpose of shear walls in reinforced concrete structures is to resist the lateral forces affecting the structure. However, the openings created for architectural reasons significantly change the behaviour of the shear wall and cause short column formation and sudden collapse of the structure due to the openings on them. In this study, opening shear walls were analysed analytically. Twenty-nine different frames were selected and analysed according to predetermined parameters such as frame height, frame spacing, shear wall thickness, opening/frame height ratio, concrete flexibility, modulus and moment of inertia of frame columns. In this context, a total of 5200 linear elastic analyses were performed. The analysis was carried out on seven different parameters. As a result of the analysis, it has been found that there is a non-linear relationship between the opening width and the stresses in the columns, and a nonlinear relationship is predicted that it can directly trigger short column formation.

  AtıfScopus1·WoS1

  İncele
• MakaleYalnız künye2019/r/bayburt/15133
  Ahşap Döşemeli Geleneksel Bayburt Evinin Deprem Performansının Belirlenmesi

  Can, Ömer; Erkul, Burak

  Ülkemizde tarihi ve kültürel değeri olan birçok yapı bulunmaktadır. Bu yapılar farklı zaman ve kültürlerdeyapılmıştır. Farklı teknikleri yansıttıkları için büyük önem taşımaktadır. Günümüzde inşa edilen betonarme veçelik yapılar gibi diğer yapı türleri ve depreme karşı performansları, gelişmiş sayısal metotlarla detaylı olarakhesaplanmaktadır. Ancak tarihi yığma yapıların içerdiği süreksizlikler ve değişen malzeme özelliklerindendolayı yapısal performansının belirlenmesinde ve yorumlanmasında zorluklarla karşılaşılabilmektedir. Buçalışmada; Bayburt ili, Aydıntepe ilçesi, Sorkunlu köyü sınırları içerisinde bulunan, yapımı 100 yıl öncesinedayanan ve kırsal mimari mirasın korunması bağlamında Bayburt kırsal geleneksel evinin yapım tekniği,malzeme ve konum özellikleri hakkında bilgiler derlenmiştir. Yapıda gözlemlenen mevcut problemlerbelirlenmiştir. StatiCAD-Yığma programı kullanılarak 2007 Deprem Yönetmeliği ve 2013 Riskli YapılarYönetmeliği esasları dikkate alınarak yapının performans analizi yapılmıştır. Performans analizinin yanı sırataşıyıcı sistemin yapısal performansı da değerlendirilmiştir.

  AtıfTR Dizin1

  İncele
• MakaleYalnız künye2019Scopus SJRQ2/r/bayburt/13779
  Investigation on seismic isolation retrofit of a historical masonry structure

  Artar, Musa; Çoban, Keziban; Yurdakul, Muhammet; Can, Ömer; Yilmaz, Fatih; Yildiz, Mehmet B.

  In this study, seismic vulnerability assessment and seismic isolation retrofit of Bayburt Yakutiye Mosque is investigated. Bayburt Yakutiye Mosque was built in the early 19th century at about 30-meter distance to Coruh river in the center of Bayburt in Turkey. The walls of historical masonry structure were built with regional white and yellow stones and the domes of the mosque was built with masonry bricks. This study is completed in four basic phases. In first phase, experimental determination of the regional white stone used in the historical structure are investigated to determine mechanical properties as modulus of elasticity, poison ratio and compression strengths etc. The required information of the other materials such as masonry brick and the regional yellow stone are obtained from literature studies. In the second phase, three dimensional finite element model (FEM) of the historical masonry structure is prepared with 4738 shell elements and 24789 solid elements in SAP2000 software. In third phase, the vulnerability assessment of the historical mosque is researched under seismic loading such as Erzincan (13 March 1992), Kocaeli (17 August 1999) and Van (23 November 2011) earthquakes. In this phase, the locations where damage can occur are determined. In the final phase, rubber base isolators for seismic isolation retrofit is used in the macro model of historical masonry mosque to prevent the damage risk. The results of all analyses are comparatively evaluated in details and presented in tables and graphs. The results show that the application of rubber base isolators can prevent to occur the destructive effect of earthquakes.

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  AtıfScopus12·WoS12·OpenAlex6

  İncele
• MakaleAçık Erişim2018/r/bayburt/15291
  Determination of Earthquake Performance in Masonry Buildings (Bayburt Korkut Ata High School Example)

  Can, Ömer; Yıldızoğlu, Halime

  There are many buildings which are historical and cultural values in Turkey. These structures are of great importance in terms of reflecting the accumulation and techniques of different times and cultures. It is possible to elaborate the performance of reinforced concrete and steel structures constructed with today's technology with advanced numerical methods. But difficulties can be encountered in determining and interpreting the structural performance due to the discontinuities and the changing material properties of the historic agglomerations. In this study; The construction technique, material properties and location features of Korkut Ata High School, which was built between 1944-1947 in Bayburt province center, was compiled. The existing problems observed in the structure have been identified. Using the StatiCAD-Masonry program, it was aimed to perform the performance analysis by taking into account the principles of the 2007 Earthquake Regulation and the 2013 Risky Buildings Regulation. Parallel to the analyzes carried out, the structural performance of the carrier system was evaluated.

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  AtıfOpenAlex7·TR Dizin7

  İncele
• MakaleAçık Erişim2018/r/bayburt/15181
  Farklı Yüksekliğe Sahip Boşluklu Perde Duvarlara ait Davranış Eğrilerinin SAP2000 OAPI ile Elde Edilmesi

  Can, Ömer; Tayfur, Bilal

  Bu çalışma kapsamında, perde duvarlarda açılan veya bırakılan pencere boşluklarının çerçeve davranışı üzerindeki etkileri incelenmiştir. Bu bağlamda, perde/çerçeve yüksekliği oranı sabit tutularak 5 farklı serbest kolon boyunun elde edilmesini sağlayacak 5 model belirlenmiştir. 5 farklı perde duvar yüksekliğine sahip çerçeveler SAP2000 OAPI aracılığıyla C# yazılım dili kullanılarak modellenmiştir. Açıkta kalan ve kısa kolon oluşumuna sebep olan boşluklara 1 cm artırımlarla kanat duvarlar eklenerek analizler yapılmıştır. Analizler çerçevenin kanat duvarsız halinden tam dolu duvar haline kadar devam ettirilmiştir. Bu sayede çerçevelere ait kanat duvar boyuna bağlı davranış değişim grafikleri elde edilmiştir. Modelleme esnasında perde duvar malzemesi, kanat duvar artırımları arasındaki kuvvet aktarımının doğru şekilde gerçekleşebilmesi için 1 cm2 meshlere ayrılmıştır. Çerçevelere ait ötelenme değerleri ve kısa kolon oluşumu beklenen kesitlerdeki iç kuvvetlerin değişimi yüksek hassasiyetle kayıt altına alınmıştır. Bu bağlamda toplam 750 farklı analiz gerçekleştirilmiştir. Bu analizler neticesinde serbest kolon boyunun kısalmasına bağlı olarak, yanal ötelenme kapasitesinin de doğrusal olmayan biçimde azaldığını ve kısa kolon oluşumu ihtimalinin arttığı görülmüştür.

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  AtıfOpenAlex1·TR Dizin1

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