Mertol, Halit Cenan
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Mertol, Halit Cenan
Halit Cenan Mertol
M., Halit Cenan
H. C. Mertol
H.,Mertol
M.,Halit Cenan
H., Mertol
Mertol,H.C.
Mertol,Halit Cenan
H.C.Mertol
Mertol H.
Halit Cenan, Mertol
Cenan Mertol H.
Mertol, Halit
Halit Cenan Mertol
M., Halit Cenan
H. C. Mertol
H.,Mertol
M.,Halit Cenan
H., Mertol
Mertol,H.C.
Mertol,Halit Cenan
H.C.Mertol
Mertol H.
Halit Cenan, Mertol
Cenan Mertol H.
Mertol, Halit
Job Title
Doktor Öğretim Üyesi
Email Address
cenan.mertol@atilim.edu.tr
Main Affiliation
Civil Engineering
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ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
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WoS Researcher ID
Sustainable Development Goals
1NO POVERTY
0
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2ZERO HUNGER
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3GOOD HEALTH AND WELL-BEING
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4QUALITY EDUCATION
1
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5GENDER EQUALITY
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6CLEAN WATER AND SANITATION
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7AFFORDABLE AND CLEAN ENERGY
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8DECENT WORK AND ECONOMIC GROWTH
1
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9INDUSTRY, INNOVATION AND INFRASTRUCTURE
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10REDUCED INEQUALITIES
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11SUSTAINABLE CITIES AND COMMUNITIES
12
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12RESPONSIBLE CONSUMPTION AND PRODUCTION
1
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13CLIMATE ACTION
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14LIFE BELOW WATER
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15LIFE ON LAND
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16PEACE, JUSTICE AND STRONG INSTITUTIONS
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17PARTNERSHIPS FOR THE GOALS
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Documents
18
Citations
365
h-index
10
Documents
14
Citations
310
Scholarly Output
34
Articles
18
Views / Downloads
231/2220
Supervised MSc Theses
14
Supervised PhD Theses
1
WoS Citation Count
272
Scopus Citation Count
306
Patents
0
Projects
1
WoS Citations per Publication
8.00
Scopus Citations per Publication
9.00
Open Access Source
8
Supervised Theses
15
| Journal | Count |
|---|---|
| PCI Journal | 2 |
| Buildings | 2 |
| Journal of the Croatian Association of Civil Engineers | 2 |
| Journal of Performance of Constructed Facilities | 2 |
| Journal of Reinforced Plastics and Composites | 1 |
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19 results
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Now showing 1 - 10 of 19
Article Citation - WoS: 4Citation - Scopus: 4A Site Survey of Damaged Rc Buildings in Izmir After the Aegean Sea Earthquake on October 30, 2020(Croatian Soc Civil Engineers-hsgi, 2023) Mertol, Halit Cenan; Tunc, Gokhan; Akis, TolgaAn earthquake with a magnitude of Mw = 6.6 and a depth of approximately 16.5 km occurred on 30 October 2020 off the cost of Samos, a Greek island 35 km southwest of Seferihisar, a town in Izmir. The earthquake caused several collapses and severe structural damage in approximately 6,000 buildings, specifically in the Bayrakli District in Izmir Bay. This paper presents the observations and findings of a technical team that visited the earthquake -affected areas immediately after the earthquake. Eleven partially or fully collapsed and several severely damaged reinforced concrete buildings were investigated. Based on the site investigations, we observed that almost all of the collapsed or severely damaged reinforced concrete buildings in the region were built between 1975 and 2000. Site observations also confirmed that the construction of these collapsed or damaged buildings did not conform to the requirements outlined in the Turkish Earthquake Codes used at the time. The failures and severe damage to buildings in earthquake-affected areas are primarily related to inadequate reinforcement configuration, poor material quality, the absence of geotechnical studies, and framing problems related to their lateral load-carrying systems. Therefore, it is recommended that all the buildings located in and around Izmir Bay, particularly those built between 1975 and 2000, be structurally evaluated to prevent any further loss of life and property during future earthquakes.Article Citation - WoS: 3Citation - Scopus: 6Experimental Analysis of the Behavior of Composite Column-Reinforced Concrete Beam Joints(Springer Heidelberg, 2021) Tunc, Gokhan; Dakhil, Abdulrrahman; Mertol, Halit CenanThis study assesses the seismic performance of steel-reinforced concrete (SRC) composite columns connected to reinforced concrete (RC) beam joints, and their ability to dissipate seismic energy through inelastic deformations. In this article, experimental aspects regarding the seismic performance of high-ductility and low-ductility steel-concrete composite frame were investigated. The principle design parameter in this study was ductility, which is considered a conceptual framework in Efficiency-Based Seismic Engineering. Thus, attention was focused on assuring various ductility ranges of joints obtained through a detailed study of the Turkish Earthquake Code (TEC 18) [Ministry of Public Works and Housing.: Turkiye Bina Deprem Yonetmeligi (Turkey's Earthquake Code for Buildings). Official Gazette (2018) (in Turkish).]. After identifying deficiencies and the energy dissipation capacity in the newly proposed joints, two half-scaled frames with specific ductility-related designs were constructed, instrumented, tested, and analyzed. The specimens were tested under displacement-controlled lateral cyclic loading that incorporated constant axial loading to create cyclic tension and compression facets across the joint areas. The test results proved that the SRC column-RC beam frames employing an extra column reinforcement ratio exhibit slightly better seismic performance. Due to the presence of structural steel, the shear failure of the joint was effectively prevented, even after the formation of the plastic hinge on the interface of the beam. During the testing, the column rebars, to some extent, made a minor contribution to the joint strength of the specimen compared to the structural steel that absorbed almost all of the load applied to the frame.Master Thesis Betonarme Yapıların Tasarımı için Özel Yük ve Direnç Katsayılarının Geliştirilmesi(2021) Elosta, Ibrahım; Mertol, Halit CenanBetonarme yapıların tasarımında kullanılan mevcut yük ve direnç (dayanım) katsayıları bu yüzyıldan önce geliştirilmiştir. Geçmişten gelen bu katsayıların kullanılması, daha iyi kalite kontrolüne sahip malzemeler ve daha iyi tahminlere sahip yükler kullanılarak inşa edilen betonarme yapıların tasarımını günümüzde önemli ölçüde cezalandırmaktadır. Bu çalışmanın amacı, mevcut malzemeler (beton ve çelik) ile ilgili istatistiksel verileri (bias ve kovaryans) ve yük tahminlerini (ölü, canlı vb.) kullanarak istenilen hedef güvenilirlik endeksine göre yük ve dayanım (direnç) katsayılarını belirleyen bir araç geliştirmektir. Birinci Derece İkinci Moment Moment (BDİM) ve Monte Carlo Simülasyonu (MSC) yapısal güvenilirlik modelleri olarak kullanılan yöntemlerdir. Farklı göçme modları için direnç (dayanım) parametrelerini belirlemek için ilk yöntem kullanılmıştır. Bu direnç parametreleri güvenilirlik indeksi değerlerini belirlemek için MCS Metodu kullanılarak 20 milyon rastgele değişken kullanılarak hesaplanmıştır. Son olarak, betonarme elemanlar tasarlamak için özel yük ve direnç katsayılarını belirlemek için Microsoft Excel Yazılımı kullanılarak bir program geliştirilmiştir. Bu programı kullanılarak, direnç (dayanım), zati ve hareketli yük verileri kullanılarak kiriş ve kolon elemanlarının göçme modlarına ve hedef güvenilirlik indekslerine göre, kendi projeniz için özel yük katsayıları seçilebilmektedir.Master Thesis Kentsel dönüşüm kapsamında ankara'da riskli bulunan binaların yorumlanması(2020) Çamurdan, Asil Tuğana; Mertol, Halit CenanTürkiye'de bulunan birçok yapı deprem bölgelerinde yer almaktadır. Özellikle 1999 Adapazarı Depremi öncesinde yapılmış olan yapıların deprem yükleri altında göçme riski bulunmaktadır. Bu depremden sonra gerçekleştirilen malzeme, analiz, tasarım, yapım ve denetim ile ilgili düzenlemeler, daha güvenli yapıların tasarlanıp inşa edilmesine yol açmıştır. Türkiye'de daha öncesinde yapılan bütün eski yapıların durumunun, yapıların güçlendirme veya yıkım ve yapım işlemi gerektirip gerektirmediğinin 'Kentsel Dönüşüm' adı altında değerlendirilmesi ihtiyacı doğmuştur. Bu çalışmada, Kentsel Dönüşüm yapılan binaların yapısal değerlendirilmesi ile ilgili çalışmalar incelenmiştir. Ankara'daki binalar için hazırlanan 39 adet yapısal değerlendirme raporu tetkik edilmiş ve sonuçları beton dayanımı, zemin taşıma kapasitesi, deprem yükleri, riskli kolon sayıları ve onların taşıdığı kesme kuvvetleri, vb. konularda karşılaştırmalar yapılmıştır. Binaların neden riskli olduğu hakkında grafikler çizilmiştir. Bu karşılaştırmalar ve grafikler ışığında bazı ilişkiler oluşturulmuştur. Bu çalışmanın sonuçları genellenerek Türkiye'nin diğer illerine gerçekleştirilecek kentsel dönüşüm çalışmalarında kullanılabilir.Article Citation - WoS: 7Citation - Scopus: 7Finite Element Analysis of Frames With Reinforced Concrete Encased Steel Composite Columns(Mdpi, 2022) Tunc, Gokhan; Othman, Mohammed Moatasem; Mertol, Halit CenanStructural frame systems that consists of concrete-encased-steel-embedded composite columns and reinforced concrete beams are typically used in mid-rise to tall buildings. In order to understand their overall structural behavior, a total of 12 frame models with high and low ductility features were constructed and analyzed using LS-DYNA software. Two of these models were validated using the results of previously tested frames. The remaining 10 models were studied to predict the behavior of frames with varying concrete strengths, reinforcement configurations, and structural steel sections under vertical and lateral loads. The results were investigated in terms of cracks and failure patterns, load-deflection relationships, energy dissipation, and stiffness degradation. The analytical results indicated that the high ductile frame models showed slightly better lateral load carrying performances compared to low ductility frame models. Moreover, the analytical studies demonstrated that the existence of structural steel in a column, regardless of its cross-sectional shape, was the most important parameter in improving the lateral load carrying capacity of a frame.Master Thesis Kompozit Kolon-betonarme Kiriş Birleşim Bölgelerinin Deneysel Analizle Davranışının Belirlenmesi(2020) Dakhıl, Abdulrrahman A.; Tunç, Gökhan; Mertol, Halit CenanBu tezde, yüksek ve sınırlı süneklik düzeylerine sahip çelik-betonarme kompozit çerçevelerin deprem performansları deneysel olarak incelenmiştir. Yapılan deneysel çalışma ile SRC kolon ve betonarme kiriş kompozit birleşim bölgelerinin depreme karşı davranış ve hasar görebilirlik özelliği ile bu birleşim bölgelerinin deprem enerjisini elastik olmayan deplasmanlar yardımı ile soğurabilme yeteneği araştırılmış ve konu detaylı olarak irdelenmiştir. Bu kapsamda, akademik kaynak taraması yapılarak kolon-kiriş bağlantısının tasarımı ve davranışı için yeni bir bakış açısı elde edilmeye çalışılmıştır. Tez çalışmasında verimlilik esasına dayalı deprem mühendisliği kavramı çerçevesinde kullanılan temel tasarım parametresi ise sünekliktir. Bu çalışma ile yürürlükteki Türkiye Bina Deprem Yönetmeliği (TBDY 2018) uyarınca detayları elde edilen kompozit kolon-kiriş bağlantılarının tasarım gereği ihtiyaç duyulan değişken süneklik taleplerine göre davranışının belirlenmesi hedeflenmiştir. Kolon-kiriş bağlantılarındaki eksikliklerin ve enerji soğurma kapasitelerinin belirlenmesini müteakip, ½ ölçek oranındaki çerçeveler belirlenen süneklik hedeflerine uygun olarak tasarlanmış, deneysel ölçüm cihazları yerleştirilerek, testleri ve analizleri gerçekleştirilmiştir. Deneylerde, bağlantı noktalarına deplasman kontrollü yatay tersinir çekme ve basınç kuvvetleri ile sabit eksenel yük uygulanmıştır. Deneysel çalışmalarda kullanılan parametreler ise şunlardır: kolon donatı oranı, bağlantı ebat oranı, eksenel yük ve yatay tersinir yükler. Yapılan deneyler neticesinde SRC kolon-betonarme kirişlerden oluşan çerçevelerde ilave kolon donatı miktarlarının deprem davranışını olumlu yönde etkilediği görülmüştür.Article Citation - WoS: 6Citation - Scopus: 10Lessons Learned From Four Recent Turkish Earthquakes: Sivrice-Elazığ, Aegean Sea, and Dual Kahramanmaraş(Springer, 2024) Tunc, Goekhan; Mertol, Halit Cenan; Akis, TolgaT & uuml;rkiye is located in an earthquake-prone region where almost all of its population resides in risky areas. In the past 100 years, there has been a strong earthquake every two years and a major one every 3 years. This study investigates the impact of four recent earthquakes, that occurred between 2020 and 2023, on reinforced concrete (RC) buildings. The first, Sivrice-Elaz & imath;& gbreve;, struck the eastern part of T & uuml;rkiye on January 24, 2020, with a moment magnitude of Mw = 6.8. The second, the Aegean Sea, hit the western part of the country on October 30, 2020, with an Mw of 6.6. The third and fourth are the February 6, 2023 dual Kahramanmara & scedil; earthquakes with Mws of 7.7 and 7.6, which struck the eastern part of T & uuml;rkiye approximately 9 h apart. Immediately following these earthquakes, a technical team investigated each of the damaged areas. This study summarizes their findings on RC buildings. It was discovered that the majority of the collapsed or severely damaged RC buildings were constructed before 2000. The main reasons for this included technological limitations, specifically on producing high-quality concrete, as well as a lack of public policies and enforced laws in the construction sector to maintain an acceptable international standard. Furthermore, the damage patterns of buildings from these four earthquakes indicated poor workmanship, low material quality, improper structural framing, a common appearance of soft and weak stories, the inadequate use of shear walls, and defective reinforcement configuration. The significance of soil studies and the enforcement of building inspections are also discussed, along with the earthquake codes. The study concludes that the maximum peak ground accelerations from the dual Kahramanmara & scedil; earthquakes were almost triple the code-prescribed values. Therefore, it is recommended that the current mapped spectral acceleration values be revised and that buildings constructed before 2000 should be prioritized while determining their structural performances.Article Citation - WoS: 15Citation - Scopus: 16Damage Observation of Reinforced Concrete Buildings After 2020 Sivrice (elazig) Earthquake, Turkey(Asce-amer Soc Civil Engineers, 2021) Cenan Mertol, Halit; Tunc, Gokhan; Akis, TolgaAn earthquake with a magnitude of M-w = 6.8 and a depth of approximately 8.06 km occurred on January 24, 2020, with the epicenter near the town of Sivrice in Elazig province, Turkey. The earthquake resulted in numerous collapses and severe structural damage to the buildings located in the downtowns and villages of Elazig and Malatya provinces. A technical team investigated the earthquake-affected areas, and this study presents their observations and findings with respect to reinforced concrete buildings. It was concluded that almost all of the collapsed or severely-damaged reinforced concrete buildings were constructed between 1975 and 1998. The design and construction of these buildings did not comply with the specifications of the Turkish earthquake codes valid at that time. The failures and severe damage of the buildings are associated with poor material quality, inadequate reinforcement configuration, and framing problems related to their lateral load-carrying systems. Therefore, it is recommended that buildings constructed between 1975 and 1998 in the region be structurally re-evaluated to avoid additional loss of life and property in future earthquakes. (C) 2021 American Society of Civil Engineers.Article Citation - WoS: 3Flexural Behavior of Reinforced Concrete Beams With Various Layers of Conventional and Steel Fiber Reinforced Concrete(Gazi Univ, 2022) Mertol, Halit CenanFlexural behavior of reinforced concrete (RC) beams having various layers of conventional concrete (CC) and steel fiber reinforced concrete (SFRC) were investigated in this study. Two groups of five beams (180x250x3500 mm) were tested under four-point loading to evaluate the flexural behavior. Both of these groups of beams were reinforced with 4 phi 16 reinforcing bars. The main variable in this research was the concrete type of the layers throughout the height of the specimen. The height of the cross-section of the beams was divided into 5 layers, each having 50 mm thicknesses. In group "F" specimens, SFRC layers were added to the layers of a CC beam, starting from the bottom, as replacements of CC layers, i.e. F15P10 represented that the bottom 150 mm was cast using SFRC whereas the top 100 mm was cast using CC. In group "P" specimens, CC layers were added to the layers of a SFRC beam, starting from the bottom, as replacements of SFRC layers, i.e. P10F15 represented that the bottom 100 mm was cast using CC whereas the top 150 mm was cast using SFRC. Experimental load-deflection curves were evaluated based on ultimate load, service/post-peak stiffnesses, and flexural toughness. It can be concluded that reasonable ductility may be achieved by adding SFRC at the tension side no matter how thick the layer is and where it is located.Article Citation - WoS: 7Citation - Scopus: 6Influence of the Proportion of Frp To Steel Reinforcement on the Strength and Ductility of Hybrid Reinforced Concrete Beams(Taylor & Francis Ltd, 2023) Kartal, Saruhan; Kalkan, Ilker; Mertol, Halit Cenan; Baran, ErayThe present study pertains to the influence of variation of FRP (Fiber Reinforced Polymer) proportion in tension reinforcement on the flexural behavior of RC beams with FRP and steel reinforcing bars. A total of 25 beams, including FRP-, steel- and hybrid FRP-steel reinforced ones, were tested to failure under four-point bending. Two types of FRP bars, GFRP (Glass Fiber Reinforced Polymer) and BFRP (Basalt Fiber Reinforced Polymer), were used and both over- and under-reinforced beams were tested. The beams in each group were designed to have close flexural capacities to fully reveal the effect of FRP proportion in the tension zone on beam ductility for a fixed bending capacity. A new analytical model was developed for estimating the bending capacities of beams. Different deformation and curvature ductility definitions were adopted and an energy-based definition, revealing the expected tendency in beam ductility, was determined. The test results revealed that the presence of even a single FRP bar in the tension zone results in reductions up to 40% in beam ductility as compared to the beam with full steel reinforcement. Each additional replacement of a steel bar with FRP was found to cause a further decrease up to 20% in beam ductility.
