Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Guler, Cuneyt(2)
- Güven, Onur(2)
- Kurt, Mehmet Ali(2)
- Yilmaz, Fatih(2)
- Yıldırım, Ümit(2)
- Aktaş, Yasemin(1)
- Apay, Ahmet Celal(1)
- Camuzcuoğlu, Murat(1)
- Can, Ömer(1)
- Demir, Ersin(1)
- Duman, Vedat(1)
- Hacıoğlu, Mahmut İlter(1)
- Kale, Mehmet Oğuzhan(1)
- Kamiloğlu, Hakan Alper(1)
- Tayfur, Bilal(1)
- Turan, Muhittin(1)
- Yıldızoğlu, Halime(1)
- Çaglar, Hakan(1)
- Çağlar, Arzu(1)
- Çimen, Selçuk(1)
Yayınlar
- MakaleAçık Erişim2025Scopus SJRQ4Göksu Nehri ve Tarsus Çayı (Mersin) Arasında Yer Alan Akarsu Havzalarının Morfometrik Özellikleri
Yıldırım, Ümit; Guler, Cuneyt; Kurt, Mehmet Ali; Güven, Onur
Bu çalışmada, Doğu Akdeniz bölgesinde yer alan Mersin ilindeki 17 adet akarsu havzasının Coğrafi Bilgi Sistemi (CBS) ile morfometrik analizlerinin yapılarak çalışma alanında havza tabanlı yönetim stratejilerinin geliştirilmesine yönelik katkıların oluşturulması amaçlanmaktadır. Bu amaç doğrultusunda, morfometrik parametreler, “temel parametreler” ve bu parametrelerden türetilen “karakteristik parametreler” olmak üzere iki grupta incelenmiştir. Havzaların hidrolojik, jeomorfolojik ve jeolojik olarak yorumlanmasında kullanılan karakteristik parametreler; drenaj yoğunluğu, akarsu sıklığı, drenaj dokusu, çatallanma oranı, form faktör, uzama oranı, yüzeysel akış uzunluğu, rölyef oranı ve hipsometrik integraldir. Elde edilen sonuçlara göre; çalışma alanının batısında, karbonatlı kayaçların bulunduğu havzalarda drenaj yoğunluğu, akarsu sıklığı ve sel riski düşük olup doğudaki havzalarda ise sel riski daha yüksektir. Akarsu havzalarının alanı ile rölyef arasında negatif bir ilişki olduğu belirlenmiştir. Bazı havzalarda, tektonik ve yapısal faktörlerin çatallanma oranlarını etkilediği tespit edilmiştir. Havzalar, kuzey–güney doğrultusunda ince ve uzamış şekillere sahiptir. Çalışma alanının batısındaki havzaların hipsometrik integral değerleri, doğuda yer alan havzalara göre daha yüksek olup bu havzalar aşınma açısından daha hassastırlar. Bu çalışma ile analizler sonucunda elde edilen veriler ile yapılan sel/taşkın afet riski değerlendirmelerinin dışında, çalışma alanında ilerleyen süreçte yapılacak hidrolojik modelleme ve afet risk yönetimi süreçlerinin değerlendirilmesine yönelik çalışmalar için de veri tabanı oluşturulmuştur.
- MakaleAçık Erişim2024Optimization Of Cantilever Retaining Wall Design Using Improved Teaching-Learning-Based Optimization Algorithms
Tayfur, Bilal; Kamiloğlu, Hakan Alper
Retaining structures play a crucial role in geotechnical engineering to support soil levels, prevent slope failure, and create flat surfaces for construction. Designing these structures involves optimizing internal and external stability while minimizing material usage and cost. This study focused on optimizing reinforced concrete cantilever retaining walls using the Teaching-Learning Based Optimization (TLBO) algorithm and an improved version (I-TLBO) with agents. In the context of the study, geometric-structural design variables, geotechnical -structural constraints, and optimization processes were examined. Minimizing weight and minimizing cost of the wall were the objectives considered in the cantilever retaining wall design process. The optimization results were compared with other algorithms in the literature, such as genetic algorithms, evolutionary strategies, and particle swarm optimization. The improved TLBO algorithm demonstrated superior performance, achieved lower design dimensions, and reduced costs. It provided more efficient solutions that pushed design constraints closer to their limits, resulting in a cost-effective and structurally sound cantilever retaining wall design. As a result of the study, the I-TLBO algorithm was found to be more cost and weight-effective than other methods in the optimization of cantilever retaining wall design.
AtıfOpenAlex2TR Dizin2
İncele - MakaleAçık Erişim2024Usability of calcite mineral, which develops in the crack fillings of carbonate rocks, as ornamental stone
Camuzcuoğlu, Murat
Turkey has a significant amount of mineral content from a geological perspective, offering essential resources, especially in mining (ornamental stone production). In this study, methods are being developed for the extraction, processing, and usability of calcite minerals, which develop as vein fillings (secondary formations) among fragmented limestone along the Bayburt-Erzurum highway for ornamental stone use. The chemical and crystallographic properties of the mineral were determined through XRD and FTIR analyses, and its suitability for ornamental stone use was evaluated. (durable, clean, and transparent) epoxy was used as a binding material for ornamental stone production, and the use of calcite minerals in jewelry production was examined, revealing its potential economic value in terms of durability, aesthetics, and rarity. Generally, while calcite minerals are widely used in various industrial fields, their use as ornamental stones remains limited. This study presents a new perspective on evaluating calcite minerals as ornamental stones, demonstrating the possibility of processing a low-hardness mineral as an ornamental stone using binding materials and its potential economic value. These findings significantly evaluate natural minerals in different applications and enhance their financial potential.
AtıfOpenAlex1İncele - MakaleAçık Erişim2023Yüksek mertebe sonlu eleman modeliyle fonksiyonel derecelendirilmiş kirişlerin serbest titreşim ve statik analizi
Turan, Muhittin; Hacıoğlu, Mahmut İlter
Bu çalışmada, fonksiyonel derecelendirilmiş (FD) kirişlerin yüksek mertebeden kayma deformasyonlu kiriş teorisine dayalı sonlu eleman yöntemiyle serbest titreşim ve statik analizleri incelenmiştir. Sonlu elemanlar yöntemi için 5 düğümlü ve 16 serbestlikli bir sonlu eleman önerilmiştir. FD kirişin malzeme özelliği kiriş kalınlığı boyunca belli bir kuvvet kuralı fonksiyona bağlı olarak değişmektedir. Lagrange eşitliği ile denge denklemleri türetilmiştir. Farklı kuvvet fonksiyonu üst indisine (p), farklı sınır şartlarına ve farklı narinliklere (L/h) göre FD kirişin boyutsuz doğal frekansları, boyutsuz yer değiştirmeleri, boyutsuz normal ve kayma gerilmeleri elde edilmiştir. Çalışmadan elde edilen sonuçlar literatür ile karşılaştırılmış ve önerilen sonlu elemanın FD kirişler için oldukça uyumlu sonuçlar verdiği görülmüştür. Önerilen yüksek mertebeden kayma deformasyonlu kiriş elemanının bu tip problemlerin çözümünde kullanılabileceği sonucuna varılmıştır. Kuvvet fonksiyonu üst indis değerinin artmasıyla birlikte boyutsuz doğal frekanslar azalmakta, boyutsuz maksimum yer değiştirmeler ise artmaktadır.
AtıfOpenAlex3TR Dizin1İncele - MakaleAçık Erişim2022Scopus SJRQ4Tarsus Kıyı Akiferi’nde (Mersin) Meydana Gelen Tuzlanmanın Nedenlerinin Araştırılması
Yıldırım, Ümit; Guler, Cuneyt; Kurt, Mehmet Ali; Güven, Onur
Bu çalışmada, Türkiye’nin Doğu Akdeniz bölgesinde yer alan Tarsus Kıyı Akiferi’nde (Mersin) görülen tuzlanma olayının nedenleri araştırılmıştır. Özellikle Akdeniz havzası genelinde kritik bir problem olan yeraltı sularının tuzlanması olayı, deniz suyu girişimi, iklim değişikliği, jeojenik etkiler ve antropojenik faaliyetler (kirlilik ve hidrolojik müdahaleler) gibi süreçlerin ve mekanizmaların bir sonucu olarak karşımıza çıkmaktadır. Bu kapsamda, Eylül 2020’de yapılan saha çalışmasında 87 yeraltı suyu kuyusundan ve deniz suyundan (Akdeniz) örnekler alınmıştır. Alınan su örneklerinin sıcaklık, elektriksel iletkenlik, pH, tuzluluk, indirgenme-yükseltgenme (redoks) potansiyeli, çözünmüş oksijen ve toplam çözünmüş madde değerleri arazide ölçülmüştür. Su örneklerinin majör iyon ve iz element içerikleri (Ca+2, Mg+2, Na+, K+, HCO3-, CO3-2, Cl-, SO4-2, NO3-, NO2-, B, Br, Sr ve Li) laboratuvarda spektrometrik (ICP-MS), spektrofotometrik ve volumetrik (titrasyon) yöntemlerle analiz edilmiştir. Analiz edilen bu parametrelere ait tematik dağılım haritaları bir Coğrafi Bilgi Sistemi (CBS) yazılımı kullanılarak oluşturulmuştur. Alınan su örneklerinin hidrokimyasal fasiyesleri, Piper ve HFE diyagramları kullanılarak belirlenmiştir. Ayrıca, bölgede görülen tuzlanma mekanizmalarını açıklamak amacıyla, çeşitli majör iyonlara ve/veya iz elementlere ait oranların kullanıldığı ikili (x-y) grafikler oluşturulmuştur. Elde edilen sonuçlara göre; Tarsus Kıyı Akiferi’ni etkileyen tuzlanma olayının; deniz suyu girişimi, Messiniyen evaporitlerinin (anhidrit, jips ve halit) çözünmesi ve antropojenik (tarımsal ve endüstriyel) faaliyetler sonucunda meydana geldiği ortaya konulmuştur.
AtıfOpenAlex2TR Dizin2İncele - MakaleAçık Erişim2021Improving of Lightweight Concrete Properties Produced with Pumice Aggregate of Nevşehir Region with Fly Ash Substitution
Apay, Ahmet Celal; Çaglar, Hakan; Çimen, Selçuk; Çağlar, Arzu; Kale, Mehmet Oğuzhan
In this study, it was aimed to determine the effects of industrial waste fly ash substitution on physical and mechanical properties of lightweight concrete. In this respect, lightweight concrete samples were produced by the use of fly ash as a cement replacement material in different proportions (1%, 3% and 5%). In lightweight concrete production, the Nevşehir region acidic pumice has been used as aggregate. The physical and mechanical properties of these lightweight concrete samples were investigated and microstructural analysis was carried out. To determine the physical differences, dry unit volume weight, capillary water absorption, porosity, compactness and freezethaw experiments were conducted. For the determination of mechanical properties, tensile splitting strength and compressive strength tests were applied. SEM images have been interpreted to examine the structural differences occurring within the material. As a result of the study, it was determined that the physical and mechanical properties of the ligtweight concrete were improved with the increase in the amount of fly ash. The best results were obtained from sample with 5% fly ash substitution. The use of industrial waste in a large sector such as construction, which adversely affects the ecological balance, will be an opportunity to dispose of waste.
AtıfOpenAlex7İncele - MakaleAçık Erişim2021Strength and Durability Performance of Clayey Soil Stabilized with Lime and Marble Powder
Yilmaz, Fatih; Demir, Ersin
This paper investigated the effect of freezing-thawing and wetting-drying cycles on the strength and durability of clay soil stabilized with lime and marble powder. The test samples were prepared by adding 5%, 10%, 15% and 20% of marble powder, without and with 6% lime to the soil which is a high plasticity clay (CH) according to the Unified Soil Classification System. Unconfined compressive strength tests were performed after 7 and 28 days of curing periods. The durability behavior of the samples was examined by applying freezing-thawing and wettingdrying cycles to the prepared samples. The results of this study show that the presence of marble powder in the soil mixture has an important role in the improvement of strength. An increase in the number of wetting-drying cycles does not decrease the volumetric stability of the samples stabilized with marble powder. The use of lime and marble powder together increased the strength values compared to the natural soil and the use of lime only. It was concluded that the co-use of lime and marble powder had a positive effect on the strength and durability behavior of high plasticity clayey soil.
AtıfTR Dizin1İncele - MakaleYalnız künye2020The earthquakes in erzincan (xo-xv. centuries)
Aktaş, Yasemin
Having an important position in Anatolia, Erzincan was a social, cultural and commercially developed city. The city, which continued its development during the hegemonies of Mengücek, Seljuk and İlhanlı, was adversely affected by a number of political and social events. The fact that Erzincan is located on the Northeast Anatolian Fault Line is an important factor in experiencing these negative events. The earthquakes on this fault line have been the most devastating disaster in the region. In Erzincan, subjected to severe earthquakes during the history, significant destructions had occurred and thousands of people had lost their lives. Secondary disasters such as floods and landslides caused by severe ground shakes play an important role in the increase of casualties. Earthquakes in the Middle Ages have been tried to be explained due to certain reasons. The reason for the earthquakes in Erzincan is explained by being connected to a number of events such as God’s punishment for the bad lives of people or the mismanagement of the administrators. In this study, the earthquakes in Erzincan between XI-XV. centuries and their consequences are dealt with.
AtıfTR Dizin2İncele - MakaleAçık Erişim2020Usability of Midyat Stone Wastes in Soil Stabilization
Yilmaz, Fatih; Duman, Vedat
Improving the geotechnical properties of weak soils is described as soil stabilization. In this study, industrial wastes of Midyat stone were used to carry out soil stabilization. Midyat stone wastes, which are evaluated in the improvement of a low plasticity clay soil, were mixed with natural soil at 5%, 10%, 15% and 20% additive percentages. In the light of the data obtained, the presence of a different binder was needed and lime was chosen as the primary binder. Index, strength and durability tests were carried out in mixtures containing 5%, 10%, 15% and 20% Midyat stone waste with and without lime. When the results of the experiments were examined, it was determined that the use of Midyat stone waste as an additive alone was ineffective on strength and durability values. In use with lime, 49% increase in strength has been determined compared to only lime sample. As a result of the study determined that the effect of Midyat stone wastes on freezing-thawing is very limited and more effective on wetting-drying, it was concluded that these wastes can be used for stabilization of low plasticity soils with lime.
AtıfOpenAlex1TR Dizin1İncele - MakaleAçık Erişim2018Determination 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.
AtıfOpenAlex7TR Dizin7İncele