Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections

Permanent URI for this collectionhttps://hdl.handle.net/20.500.13091/3

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Now showing 1 - 14 of 14

Citation - WoS: 3
Citation - Scopus: 1
Analysis of the Effects of Adding Pyroclastic Rock To Red Mud for the Production of a Baked Building Material in Terms of Its Resistance To Frost Actions
(SPRINGER INTERNATIONAL PUBLISHING AG, 2020) Dereli, Mustafa; Tosun, Mustafa
In the aluminum sector, approximately 130 million tons of waste red mud was produced in the last year. Such a high amount of wastes causes their storage areas to become a threat to the environment. Numerous studies have been conducted in the literature to eliminate this environmental threat. However, it is observed that these studies are mostly conducted on only a part of the waste, and there are few studies on the whole consumption of waste. Due to the said lack in the literature, it is thought that this waste can be utilized as a baked building material and consumed systematically. However, according to the literature and previous studies, it is observed that the use of the waste alone will not produce a quality building material. Therefore, otiose pyroclastic rocks were included within the scope of the study to be used together with the waste material. Accordingly, micronized pyroclastic rocks obtained from different regions were added to red mud at the proportions of 10, 20, 30, 40, and 50% by weight. Bentonite of 3% was added to mixtures to prevent capillary cracks. As a result of the preliminary experiments conducted on the baked building material samples obtained with the above-mentioned mixture ratios, two mixture types from each region with the highest compressive strength were selected. Physical and mechanical experiments were conducted on the samples to determine the resistance to frost actions-as an outer ambient condition with the most destructive effect-of the baked building materials (especially brick, etc. with the widest area of usage in outer walls and surface cover materials such as ceramic, clinker pavement, etc.) which will be obtained with these mixtures. As a result of the study, the optimum mixture type was determined to be the sample formed by adding 10% volcanic tuff around campus to red mud and baking it at a temperature of 1050 degrees C. Furthermore, different mixture types formed by adding the micronized pyroclastic material from other regions could reach sufficient values in terms of both compressive strength and frost actions. According to the results of the study, this material will fulfill the need for raw material as a building material resistant to frost actions and used in outer masonry. In this study, a process was obtained to eliminate a potential environmental problem, and a contemporary building material intended to be used as a sustainable building material was produced.
Citation - WoS: 7
Citation - Scopus: 7
An Analytical Study About the Use of Steel Plate Shear Walls To Improve Lateral Rigidity of Reinforced Concrete Framed Structures
(LATIN AMER J SOLIDS STRUCTURES, 2020) Korkmaz, Serra Zerrin
Steel plate shear walls are becoming popular for steel structures. In this study, the use of Steel Plate Shear Walls (SPSW) was discussed to increase the horizontal stiffness of reinforced concrete structures. It was aimed to fix the SPSW elements to the exterior of the building. ABAQUS models of SPSW applied 2D frame samples, which were tested in a previous experimental study, were created. Experimental and analytical horizontal load-top displacement curves were found to be in good agreement. In the study, ABAQUS models of a 6-story and 3D reinforced concrete building were also created. In models, SPSW elements were placed at the exterior of the building. The load capacities of the reinforced and non-reinforced building models were compared. The steel sheet thickness and the number of frame openings at which the SPSW element was placed were considered as the variable parameters.
Citation - WoS: 50
Citation - Scopus: 55
Buildings Damages After Elazig, Turkey Earthquake on January 24, 2020
(SPRINGER, 2021) Doğan, Gamze; Ecemiş, Ali Serdar; Korkmaz, Serra Zerrin; Arslan, Musa Hakan; Korkmaz, Hasan Hüsnü
A 6.8-magnitude earthquake that occurred on January 24, 2020, has been effective in Turkey's eastern regions. The earthquake, with recorded peak ground acceleration (PGA) value of 0.292 g, caused the destruction or heavy damage of buildings, especially in the city center of Elazig province. The purpose of this paper was to share the results of detailed investigation in the earthquake-stricken area. Additionally, the causes of damages and failures observed in the buildings were compared to those that had occurred in previous earthquakes in Turkey. In this study, the damages observed in especially RC buildings as well as in masonry and rural buildings were summarized, the lessons learned were evaluated, and the results were interpreted with reference to Turkish earthquake codes. In the study, it was particularly emphasized why the building stock underwent such damage even though the buildings were exposed to earthquake acceleration well below the design acceleration values.
Citation - WoS: 19
Citation - Scopus: 21
Design of a Thermal Hotel Based on Ahp-Qfd Methodology
(MDPI, 2021) Varolgüneş, Fatma Kürüm; Canan, Fatih; del Rio-Rama, Maria de la Cruz; Oliveira, Cristiana
The aim of this investigation was to help select design criteria that highlight customer satisfaction, and thus improve the design quality in buildings, specifically in a building of a thermal hotel. The methodology is based on applying the Quality Function Deployment (QFD) technique to listen to the voice of the customer, in addition to the Analytic Hierarchy Process (AHP), which allows selection of the best design alternative. The literature shows that QFD-AHP methods have been tried in different areas of the building industry, but there are few examples of combining building design processes. In the study process, collaboration environments between stakeholders were established and the operability of the method used was tested with real actors. The matrix solutions realised in the horizontal and vertical sections of the framework of the model can be reused in different projects with different user demands. This added a modular and developable feature to the model. This study revealed that the most important customer needs, in order of importance, are health, service, comfort, and functionality. These are followed by accessibility, aesthetics, and energy conservation. According to the findings, QFD was shown to be an appropriate method for transferring customer (occupant) requirements to designs in the most accurate manner, given the complex structure of thermal hotel buildings.
Citation - Scopus: 24
Evaluation of Daylight and Glare Quality of Office Spaces With Flat and Dynamic Shading System Facades in Hot Arid Climate
(Solarlits, 2022) Özdemir, Hüseyin; Çakmak, Bilgehan Yılmaz
There has been an increasing awareness in recent years about the evaluation of daylight and glare quality in buildings. In the study, an office space with a flat and a dynamic shading system facade (triangular cell facade) is discussed in the province of Mardin, which is in a hot and arid climate zone. Observing two different facade types in a single office space allows the study to be carried out in detail, and their suitability can be checked by producing quick design alternatives. The analysis and evaluation of daylight and glare quality over office spaces with two different facade types aims to develop an innovative approach. This objective is designed to respond to climatic conditions and contribute to the development of climate-sensitive designs. The study was parametrically simulated with the Grasshopper plugin and daylight plugin ClimateStudio tools in Rhino, an office space with both a flat facade and a dynamic shading system facade located in a hot-arid climate. As a result of the analysis, the dynamic shading system, which can transform according to the position of the sun, shows outputs in accordance with the LEEDv4 standard, minimizing the ASE value of the facade's annual sunlight exposure by up to 10%, while maximizing the spatial daylight autonomy sDA value by 60% or more. In addition, Daylight Glare Probability (DGP) values of 0.38 keep the visual quality affective. As a result, the office space with a dynamic shading system facade showed that it can significantly improve the flexibility of shading to control daylight measurements and glare, achieving the maximum level of visual comfort based on the LEEDv4 certificate. © 2022 The Author(s). Published by solarlits.com. This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/4.0/).
Citation - WoS: 2
Citation - Scopus: 2
Hbim and Thermal Performance in Historical Buildings
(Springer Science and Business Media Deutschland GmbH, 2022) Özeren, Ö.; Korumaz, Mustafa
States are making regulations with the aim of reducing carbon emissions to zero by 2050. Buildings, which are responsible for a quarter of the energy consumed in the world, are within the scope of these regulations. Generally, policies developed cover new buildings. Since buildings with heritage value have a large share in the world, especially in Europe, they should not be separated from the policies developed. Heritage buildings will be important in achieving future energy targets with energy performance improvements. For this reason, it is necessary to increase the thermal performance of buildings with heritage value. Reinforcement in heritage buildings is usually carried out in the building envelope. However, this improvement process is quite difficult. Because the improvements should be carried out by considering the heritage values. The recent use of BIM-based systems has contributed positively to this process. All interventions to be performed on the HBIM model obtained from point clouds can be calculated and evaluated in advance. In this study, parametric performance calculations were performed over the BIM-based software Revit, taking into account the type and thickness of the insulation material over the HBIM model. The study was carried out on the Traditional Turkish House located in Ermenek district of Karaman province in Turkey. According to the results of the study, it was determined that the energy efficiency increased by 33% on average. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Citation - WoS: 8
Citation - Scopus: 7
Non-Destructive Test Investigations on the Deterioration of Roman Mausoleum in Karadag Central Anatolia, Turkey
(UNIV AGEAN, DEPT MEDITERRANEAN STUD, 2020) Tosunlar, Mehmet Bahadır; Beycan, Arife Deniz Oktaç; Korkanç, Mustafa
The Binbirkilise region has maintained its existence as an important religious and cultural center from the Hittites to the last period of the Eastern Roman Empire. There are many monuments in the region dating back to these periods. Among the region monuments, a Roman mausoleum draws attention along with its construction system and original form. This mausoleum was recently (2015) completely unearthed in the archaeological excavations carried out by the archaeologists of the Karaman Museum. Since then serious deterioration problems started to occur of atmospheric, biological and human origin. Several non destructive techniques (NDT) were applied and relevant measurements undertaken such as; temperature (ST), surface moisture (SM), Schmidt hammer rebound (SHR), and P-wave velocity (Vp) tests, 3D photogrammetry, thin sections, polarizing microscope, XRF analyses, XRD, mainly used to determine the deterioration conditions of building stones on the surface. The NDM innovative approach contributed to the understanding of the deterioration dynamics. It has been determined that a white crust formation on the parts of the monument unearthed by excavations and this crust formation affects the deterioration process of the building stones.
Citation - WoS: 2
Citation - Scopus: 2
Optimal Energy Design and Retrofit Recommendations for the Turkish Building Sector
(COLLEGE PUBLISHING, 2021) Sayın, Selçuk; Augenbroe, Godfried
This paper introduces methodologies and optimal strategies to reduce the energy consumption of the building sector with the aim to reduce global energy usage of a given region or country. Many efforts are underway to develop investment strategies for large-scale energy retrofits and stricter energy design standards for existing and future buildings. This paper presents a study that informs these strategies in a novel way. It introduces support for the cost-optimized retrofits of existing, and design improvements of new buildings in Turkey with the aim to offer recommendations to individual building owners as well as guidance to the market. Three building types, apartment, single-family house and office are analyzed with a novel optimization approach. The energy performance of each type is simulated in five different climate regions of Turkey and four different vintages. For each vintage, the building is modelled corresponding to local Turkish regulations that applied at the time of construction. Optimum results are produced for different goals in terms of energy saving targets. The optimization results reveal that a 50% energy saving target is attainable for the retrofit and a 40% energy saving target is attainable for new design improvements for each building type in all climate regions.
Citation - WoS: 62
Citation - Scopus: 67
Outdoor Thermal Comfort Conditions During Summer in a Cold Semi-Arid Climate. a Transversal Field Survey in Central Anatolia (turkey)
(PERGAMON-ELSEVIER SCIENCE LTD, 2019) Canan, Fatih; Golasi, Iacopo; Ciancio, Virgilio; Coppi, Massimo; Salata, Ferdinando
In the present study the outdoor thermal comfort conditions in Konya (Central Anatolia, Turkey) were examined during summer. This is why a transversal field survey was carried out and over 300 questionnaires were filled by randomly chosen participants. Moreover, environmental variables as air temperature, wind speed, relative humidity and globe temperature were constantly measured. This allowed to relate the thermal perception and preference votes given by the interviewees to the morphological and furniture characteristics of the surveyed sites. Then, taking into account at the same time all the obtained data, a regression line between the thermal perception votes and the corresponding PET (Physiological Equivalent Temperature) values was obtained and a neutral PET value of 26.8 degrees C was calculated. Based on a logistic curve model with the probit function, a preferred PET value of 19.2 degrees C was determined. On the other hand, the PET comfort range of (21.6)-(32.0) degrees C was obtained by considering, as thermal comfort interval, the range (- 0.5)-(+ 0.5) of the ASHRAE 7-point scale. Finally, two outdoor thermal comfort indexes were introduced. The first one, called Turkish Outdoor Comfort Index (FOCI), is able to predict the thermal perception of the considered population in hot conditions. In the second case, the Predicted Percentage of Dissatisfied (PPD) relation was modified based on the surveyed data and outdoor sites.
Citation - WoS: 28
Citation - Scopus: 29
Outdoor Thermal Perception and Comfort Conditions in the Koppen-Geiger Climate Category Bsk. One-Year Field Survey and Measurement Campaign in Konya, Turkey
(ELSEVIER, 2020) Canan, Fatih; Golasi, Iacopo; Falasca, Serena; Salata, Ferdinando
This study presents an analysis of the thermo-hygrometric conditions in the city of Konya (Turkey). A one-year transversal field surveywas carried out in the Selcuk University campus and 2295 valid questionnaireswere collected. In each questionnaire, randomly selected interviewees provided personal information and judged their perception and thermal preference according to the ASHRAE 7-point and McIntyre scales, respectively. For each interviewee, a value of the Physiological Equivalent Temperature (PET) was calculated based on the values of operational variables obtained from the questionnaires and the environmental variablesmeasured during the survey. This allowed to calculate the seasonal preferred and neutral PETs and the annual PET comfort range. Also, the scale of the PET thermal perception was determined for the Konya population and, more generally, for the inhabitants of the BSk Koppen-Geiger climate zone. Statistical analyzes carried out in terms of Variance Inflationary Factor, multicollinearity assessment and Best Subsets Analysis led to the identification of the Turkish Outdoor Comfort Index, an empirical index able to predict the average value of the thermal perception of a large group of individuals living in the aforementioned climate zone. Moreover, the equations of the Predicted Percentage of Dissatisfied (PPD) were obtained for each season. (c) 2020 Elsevier B.V. All rights reserved.
Citation - WoS: 6
Citation - Scopus: 6
Outdoor Thermal Perception in the Semi-Arid Climate of Constantine, Algeria: a Field Survey During the Post-Covid
(Elsevier Ltd, 2023) Ouis, A.; Benhassine, N.; Canan, Fatih
The purpose of the paper was to assess pedestrians' thermal perception, in the semi-arid climate of Constantine, Algeria, with particular emphasis on the protocols implemented in public spaces during the post-COVID-19. Three outdoor public spaces were selected in August 2021 to conduct a field study involving 254 respondents, randomly assigned. The adopted approach combined objective and subjective assessment, as well as numerical simulations using ENVI-met. Accordingly, microclimate monitoring and a questionnaire survey were carried out simultaneously from 7 a.m. to 7 p.m. in each study site. A strong association was found between the combined microclimate parameters (objective variables) and thermal sensation of the surveyors with (R2 = 0.74). Besides, Kruskal-Wallis H test revealed that the subjective thermal sensation was significantly influenced (p-value <0.05) by thermal history and purpose of visit (subjective variables). Most interviewees preferred ‘move to shade’ measure as a remedial behavior to reduce their thermal discomfort. Further, a neutral temperature of 22.7 °C PET was obtained by a linear regression between the Mean Thermal Sensation Votes (MTSV) and Physiological Equivalent Temperature (PET), the comfort range was estimated between 18.6 °C ≤ PET≤ 26.8 °C during summer. Regarding the COVID-19 pandemic effects, the Chi-square test suggests that the frequency of pedestrian visits was statistically independent of the imposed pandemic measures. However, the planned activities were affected by social distancing and the use of face masks increases pedestrians' thermal discomfort. Overall, the study highlights the significance of environmental and non-environmental factors to improve outdoor thermal comfort, and ensure human well-being. © 2023 Elsevier Ltd
Citation - WoS: 6
Citation - Scopus: 7
Positional Accuracy Assessment of Digital Orthophoto Based on Uav Images: an Experience on an Archaeological Area
(MDPI, 2021) Güleç Korumaz, Saadet Armağan; Yıldız, Ferruh
Rapid development in UAV (unmanned aerial vehicle) photogrammetry made it preferable in many applications including cultural heritage documentation. Usability, quickness and accuracy of digital images have grabbed also the attention of archaeologists. Especially orthoimages by UAVs have become considerably significant in the field of archaeological heritage documentation since they are fast and accurate images of the object with high detailed information. However their accuracy and quality are the most important features of these images for archaeological documentation. The aim of this paper is to evaluate horizontal and vertical accuracy of an orthophoto taken by a fixed-wing UAV in an archaeological area. The evaluation is made according to ASPRS (American Society for Photogrammetry and Remote Sensing) Accuracy Standards for Digital Geospatial Data. The archaeological area, the name of which is Kubad Abad Palace in Beysehir Province in Konya, is the only Anatolian Seljuk Palace structure that has survived to the present day. The study describes the orthophoto generation process and positional accuracy evaluation results within the frame of the importance of accuracy for archaeological documentation.
Citation - WoS: 9
Citation - Scopus: 11
A Practical Approach To Performance-Based Building Design in Architectural Project
(ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2020) Sayın, Selçuk; Çelebi, Gülser
The aim of this study is to develop an approach that can enhance and contribute to the practical applicability of performance-based building design in architectural projects. The need for such an approach is based on the current lack of a practical application for performance-based design in architectural projects, despite the numerous studies conducted in this regard to date. The approach has been applied in a commercial building project designed by an architectural firm in Konya. The performance evaluation of the design developed in accordance with the requirements of the client/builder and the restrictions of regulations was carried out using IES VE 2014 software at a specific phase of the design process. Through this building performance simulation tool; the thermal protection of the envelope/heat loss and solar gain, thermal comfort (temperature, humidity), air quality (freshness), daylight and glare levels were evaluated for the selected spaces in the building, and following the evaluation, new design proposals were put forward to improve the design so as to meet the performance goal.
Citation - WoS: 30
Citation - Scopus: 33
Top Government Hands-On Megaproject Management: the Case of Istanbul's Grand Airport
(EMERALD GROUP PUBLISHING LTD, 2019) Eren, Fatih
Purpose The purpose of this paper is to explore top government hands-on megaproject management model applied to Istanbul's new airport megaproject. The study aims to find an answer to this research question: How is the organizational design and management of a megaproject that has been alive in a confrontational socio-political environment and whose national strategic importance is high? Design/methodology/approach Organizational theory and critical theory perspectives are used in this study. Istanbul's grand airport is chosen as the case study. Interview, focus group and document analysis methods are used together. The research yields data from qualitative resources. Verbal and written materials are organized into three major themes and 27 key subjects for content analysis. Findings A top level of organizational management can be attained in the state in order for the mega projects with high national strategic importance to survive without problems and with high performance. The top government-level organizational structure implemented at Istanbul's new airport has reduced complexity, risk and uncertainty; increased performance and product quality; and strenghtened inter-organizational compatibility and communication within the megaproject organization. However, this structuring also increased centralization, reduced transparency and direct public participation in the decision-making process. Originality/value This empirical research widens and deepens the theoretical foundations of top government hands-on megaproject management. The study, which includes a process analysis, allows to better understand the philosophy, nature, success, planning process, social organization and dynamics of megaprojects and to explain them through the values and strategies of organizations.

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