• Explainable ensemble learning models for the rheological properties of self-compacting concrete 

  Çakıroğlu, Celal; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  Self-compacting concrete (SCC) has been developed as a type of concrete capable of filling narrow gaps in highly reinforced areas of a mold without internal or external vibration. Bleeding and segregation in SCC can be ...

• Vision-based dynamic response measurements of structures by using smartphone videos and alternative techniques 

  Karameşe, Genco; Yardımcı, Ferit; Güllü, Ahmet; Yüksel, Ercan; Yalçın, Cem; Büyüköztürk, Oral (World Scientific Publishing Company, 2022)

  This study aimed to measure dynamic responses of structural systems using smartphone videos and vision-based sensing processes. Two algorithms, based on template matching and feature extraction, are employed for this ...

• Optimization and predictive modeling of reinforced concrete circular columns 

  Bekdaş, Gebrail; Çakıroğlu, Celal; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  Metaheuristic optimization techniques are widely applied in the optimal design of structural members. This paper presents the application of the harmony search algorithm to the optimal dimensioning of reinforced concrete ...

• Assessment of liquefaction potential during earthquakes by using SPT-number of blows and two-dimensional finite element analyses 

  Koltuk, Serdar; Subaşı, Ozan; Fernandez-Steeger, Tomas; İyisan, Recep (Springer, 2022)

  For the planning and design of buildings in earthquake zones with high groundwater levels, the liquefaction potential of the building site has to be investigated and evaluated. In DIN EN 1998-5:2010-12 (2010), the diagrams ...

• LGM Glaciations in the Northeastern Anatolian Mountains: new insights 

  Reber, Regina; Akçar, Naki; Tikhomirov, Dmitry; Yeşilyurt, Serdar; Vockenhuber, Christof; Yavuz, Enver Vural; Ivy-Ochs, Susan; Schluechter, Christian (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  Barhal Valley belongs to the Coruh Valley System in the Kackar Mountains of northeastern Anatolia. This 13 km long valley is located to the south of the main weather divide and to the east of Mt. Kackar, with the highest ...

• Optimal dimensioning of retaining walls using explainable ensemble learning algorithms 

  Bekdaş, Gebrail; Çakıroğlu, Celal; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  This paper develops predictive models for optimal dimensions that minimize the construction cost associated with reinforced concrete retaining walls. Random Forest, Extreme Gradient Boosting (XGBoost), Categorical Gradient ...

• A Windows Program for Feldspar group thermometers and hygrometers 

  Yavuz, Fuat; Yavuz, Enver Vural (Edizioni Nuova Cultura, 2022)

  A Microsoft (R) Visual Basic software, called WinFeldth, has been developed for plagioclase, alkali feldspar and liquid compositions that coexisting as two-feldspar, plagioclase-liquid and alkali feldspar-liquid pairs to ...

• Interpretable machine learning algorithms to predict the axial capacity of frp-reinforced concrete columns 

  Çakıroğlu, Celal; Islam, Kamrul; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  Fiber-reinforced polymer (FRP) rebars are increasingly being used as an alternative to steel rebars in reinforced concrete (RC) members due to their excellent corrosion resistance capability and enhanced mechanical properties. ...

• Optimum design of timber structures under fire using metaheuristic algorithm 

  Ulusoy, Serdar (Croatian Association of Civil Engineers, 2022)

  One of the major tasks of structural engineers is to reduce the building cost. Thus, an effective optimization of structural elements is gaining in importance every day. The teaching-learning-based optimization (TLBO), ...

• Effectiveness of wood waste sawdust to produce medium- to low-strength concrete materials 

  Batool, Farnaz; Islam, Kamrul; Çakıroğlu, Celal; Shahriar, Anjuman (Elsevier, 2021)

  This paper investigates the use of sawdust as fine aggregate and its influence on the properties of hardened concrete, and examines the correlation between sawdust content and hydration days. In this study, untreated wood ...

• Optimum design of cylindrical walls using ensemble learning methods 

  Bekdaş, Gebrail; Çakıroğlu, Celal; Islam, Kamrul; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2022)

  The optimum cost of the structure design is one of the major goals of structural engineers. The availability of large datasets with preoptimized structural configurations can facilitate the process of optimum design ...

• Metaheuristic optimization of laminated composite plates with Cut-Outs 

  Çakıroğlu, Celal; Islam, Kamrul; Bekdaş, Gebrail; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2021)

  The stacking sequence optimization of laminated composite plates while maximizing the structural performance or minimizing the weight is a subject investigated extensively in the literature. Meanwhile, research on the ...

• A numerical study on the estimation of liquefaction-induced free-field settlements by using PM4Sand model 

  Subaşı, Ozan; Koltuk, Serdar; İyisan, Recep (Korean Society of Civil Engineers, 2021)

  The present paper treats the estimation of liquefaction-induced, free-field settlements using two-dimensional, fully coupled, finite element (FE) analyses. The PM4Sand model is used to simulate the liquefaction behavior ...

• CO2 emission and cost optimization of concrete-filled steel tubular (CFST) columns using metaheuristic algorithms 

  Çakıroğlu, Celal; Billah, Muntasir; İslam, Kamrul; Bekdaş, Gebrail (MDPI, 2021)

  Concrete-filled steel tubular columns have garnered wide interest among researchers due to their favorable structural characteristics. To attain the best possible performance from concrete-filled steel tubular columns while ...

• Performance of optimum tuned PID controller with different feedback strategies on active-controlled structures 

  Ulusoy, Serdar; Bekdaş, Gebrail; Niğdeli, Sinan Melih; Kim, Sanghun; Geem, Zong Woo (MDPI-Multidisciplinary Digital Publishing Institute, 2021)

  In this study, multi-story structures with different combinations (on each floor and only the first floor) of active tendon control systems driven by a proportional-integral-derivative (PID) controller were actively ...

• Finite element-based coefficient of lateral earth pressure for cohesionless soil 

  Hamderi, Murat (American Society of Civil Engineers, 2021)

  In addition to various factors, the magnitude of lateral earth pressure depends on the direction and amount of the wall rotation. The current literature presents several expressions to calculate lateral earth pressure that ...

• Metaheuristic algorithms in optimum design of reinforced concrete beam by investigating strength of concrete 

  Ulusoy, Serdar; Kayabekir, Aylin Ece; Bekdaş, Gebrail; Niğdeli, Sinan Melih (2020)

  The locations of structural members can be provided according to architectural pro-jects in the design of reinforced concrete (RC) structures. the design of dimensions isthe subject of civil engineering, and these designs ...

• Açık deniz yapıları kova temel sistemi davranışı üzerinde tekrarlı yük frekansının etkisi 

  Taşan, Hacı Ercan; Akdağ, Cihan Taylan (2018)

  Açık deniz yapıları kova temel sistemi davranışının tahmini ile ilgili henüz yeterli bilgi birikimine ulaşılmamıştır. Açık deniz koşullarında temel sistemlerinin ağır tekrarlı yüklere maruz kalması nedeniyle zeminde kalıcı ...

• Kazık gruplarında eksenel yük dağılımının bulunması için yeni bir yöntem 

  Hamderi, Murat (2019)

  Literatürde grup kazıklarının eksenel yük dağılımını hesaplayan analitik bir yöntem mevcut değildir. İleri derecede hiperstatik olan bu sistemlerin çözümü bazı nümerik yaklaşımlarla yapılabilmektedir. Uygulamada ise ...

• Kazıklı radye temellerin oturma tahmini için yeni bir yöntem 

  Hamderi, Murat (2018)

  Literatürde kazıklı radye sistemlerin oturması için verilen ampirik formüller oturmayı sadece kaba bir yaklaşıklıkla tahmin edebilmektedir. Kazıklı radye sistemler için hassas oturma tahmini ancak 3-boyutlu sonlu elemanlar ...

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