Fen Bilimleri Enstitüsü: Recent submissions

  • Thermal buckling of FGM thin plates with variable thickness 
    Sanrı, Işıl. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    The main focus of this study is the thermal buckling analysis of plates. In particular, the studies on the problem of the stability of various shapes of plates are extensive but quite little has been reported for the thermal ...
  • Seismic retrofitting of RC beam-column joints using composite materials 
    Kaya, Osman. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Many of the existing reinforced concrete structures built prior to 1999 have deficient design details due to their non-seismic design or construction flaws. These structures are at risk of collapse under severe earthquakes. ...
  • Energy-based earthquake response analysis and design of reinforced concrete SDOF columns 
    Dindar, Ahmet Anıl. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Earthquakes have claimed much more life and caused enormous financial damage in Turkey. It is the researchers’ motivation to understand the characteristic of the earthquakes and to find out how to build the structures those ...
  • Strengthening of brick infilled RC frames with different aspect ratios by means af CFRP overplays 
    Atmaca, Savaş. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The effects of aspect ratio on the engineering properties (stiffness, strength, energy dissipation, ductility…etc.) of infilled RC frames with or without CFRP were evaluated experimentally and analytically. Ten single-bay, ...
  • Hybrid tracking controller with attached TMD 
    Bozer, Ali. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Supplemental damping systems can be substitute for hysteretic or kinetic damping and eliminate the need for additional strength and stiffness for desired performance levels. Supplemental dampers dissipate the energy ...
  • Highway embankment construction using fly ash and snow in cold regions 
    Saygılı, Altuğ. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    During winter season, due to workability problems, it is very hard to continue construction. Water needed for compaction will be very hard to handle. However, snow is readily available on site. With Type C fly ash, snow ...
  • Effects of lightweight fly ash aggregate properties on the performance of lightweight concretes 
    Koçkal, Niyazi Uğur. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Only a very small content of ash is being used for the construction applications. As large quantities of the fly ash remain unutilized in most countries of the world, the manufacture of light-weight fly ash aggregates is ...
  • Effects of cyclic compressive loading and self healing on the mechanical and permeability properties of concrete 
    Akakın, Tümer. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Concrete, when subjected to repeated loads, may exhibit excessive cracking and may eventually fail after a sufficient number of load repetitions, even if the maximum stress applied is less than the static strength of a ...
  • Analysis of the performance of retaining systems in deep excavations in greywackes 
    Keskin, Halis Bora. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Due to the economic growth, the need for high-rise buildings and shopping malls with multiple basement levels increased in Istanbul and construction of retaining structures to support deep excavations reaching 25 to 40 ...
  • Recycled aggregate concrete at elevated temperatures 
    Çelik, Bülent. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Recycling the demolished concrete as aggregate and reuse of the recycled aggregates in concrete can help to prevent environmental pollution and keep the natural resources. However, fresh and hardened properties of concretes ...
  • Vibration isolation concept in aseismic design of structures 
    Çivi, Ahmet. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)
    The phi losophy of conventional design principles is reviewed for earthquake resistant structures. It is emphasized that in order to achieve a higher degree of rei iabil ity and also to prevent the occurence of any cracking ...
  • Experimental study on the behaviour of an i-beam to SHS-column by t-stub bolted connection 
    Yemez, Kağan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In 80’s and 90’s hollow sections (HS) were mainly used in compression and tension elements of truss systems. Nowadays, architects are more and more using hollow sections in building applications where limited amount of ...
  • Statics and dynamics of super elliptical homogeneous and FGM plates 
    Çeribaşı, Seyit. (Thesis (Ph.H..)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In this study super elliptical plates are statically and dynamically analyzed. This class of plates includes a wide range of shapes varying from an ellipse to a rectangle. Although studies on the extreme boundaries of the ...
  • Investigation of dynamic behavior of geosynthetic reinforced soil retaining structures under earthquake loads 
    Enünlü, Ali Kasay. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    Due to their advantageous engineering properties and cost effectiveness large numbers of Geosynthetic-Reinforced Soil Retaining Walls (GRS-RWs) are being designed and constructed throughout the world and also in our country. ...
  • Earthquake protection of Beylerbeyi Palace by reversible mixed technologies 
    Aras, Fuat. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The historical building stock and seismic risk of Anatolia draws considerable attention of the engineers for studying the earthquake performance of these structures and investigating appropriate protection techniques. In ...
  • Infinite elements in finite element method 
    Erkal, Aykut. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    It is natural and common to idealize stress or field problems into finite element models with rigid boundaries remote from the area of interest. However, the degree of accuracy of solutions may be significantly increased, ...
  • Effect of binder composition on durability and mechanical properties of high performance self-compacting concrete 
    Baştopçu, Mehmet Emre. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This study was carried out in order to investigate the effect of binder composition on fresh and mechanical properties of self-compacting concrete (SCC). Total of eight different concrete mixtures have been produced. All ...
  • Development of fragility curves for seismic vulnerability assessment of high-rise R/C buildings with added viscous dampers 
    Güneyisi, Esra Mete. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The fragility curves are used to represent the probabilities that the structural damages, under various level of seismic excitation, exceed specified damage states by means of earthquake intensity-damage relations. This, ...
  • Stochastic diffusion search and voting methods 
    Nircan, Ahmet Kutsi. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    This study compares known social choice rules in the context of agent based search and introduces two new variants of stochastic diffusion search algorithm. Performance comparison to match a correct ordering of 36 voting ...
  • Influence of shear deformations in plate bending 
    Kaya, Erdem. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The influence of shear deformations in plate bending becomes significant when the ratio of the thickness to span is relatively large. However, the effects of transverse shear strains are neglected normally in classical ...

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