Ph.D. Theses: Recent submissions

  • Freight trip generation in urban areas 
    Günay, Gürkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Freight transportation planning and modeling in general, and Freight Trip Generation (FTG) in particular, is an area that is not covered as widely as passenger transportation. FTG mechanisms are different from passenger ...
  • Frictional behavior between geosynthetic reinforcement and facing blocks 
    Karaoğlan, Halil. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Geosynthetic reinforced soil retaining walls (primarily those with precast con- crete block facing elements) reinforced by geogrids or geotextiles are in a period of rapid growth. The construction of geosynthetic reinforced ...
  • Influence of dilatancy on slip planes and on localization of strains 
    Altunbaş, Adlen. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Correct calculation of slip plane geometry plays a key role in the design of geotechnical structures. The goal of this study is the identi cation of slip planes in cohesionless soils retained behind walls and quantifying ...
  • An experimental study on the behavior of segmental pile with variable flexural rigidity 
    Yahia, Yasser İbrahim Osman. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Alternating mortar blocks and rubber pads are connected to each other by a cable passing through the center of each block to form a fixed beam/pile model with variable flexural rigidity. The fixed beam/pile model is supported ...
  • Effect of cyclic loading on connection strength of geosynthetic-reinforced structures 
    İçöz, Görkem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    This study investigates the effect of cyclic loading over the connection strength of geosynthetic reinforced segmental (modular) block walls. For this purpose a specially designed machine has been built and reduced size ...
  • Investigation of dynamic behavior of back to back reinforced soil retaining walls with finite element and artificial neural network 
    Öztürk, Tahir Erdem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Back-to-back Mechanically Stabilized Earth (MSE) wall are commonly used for bridge approach embankments. By the means of not only aesthetically pleasing appearance but also satisfactory performance under seismic loading ...
  • Strength and dilatancy of anisotropic cohesionless soils 
    Abadkon, Arshiya. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Peak friction angle and critical state friction angle are two key parameters representing the shear strength of cohesionless soils. Peak friction angle of sand is a function of critical state friction angle and dilatancy ...
  • Nutrient export coefficient modelling of the Melen Watershed using estimated retention in the water body 
    Akıner, Muhammed Ernur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The Melen Watershed provides fresh drinking water to most of Istanbul. According to The Ministry of Forest and Water Works of Turkey, regarding the pollution status, Melen River Basin should be primarily dealt with. Nutrient ...
  • Negotiating with qualitative preferences: methods for generating bids effectively 
    Aydoğan, Reyhan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    This thesis studies automated bilateral service negotiation in which a consumer and a producer agent negotiate on a particular service in a distributed environment. The key challenges of automated service negotiation that ...
  • Incremental area method approach for the determination of aquifer parameters and aquifer systems identification 
    Şahin, A. Ufuk. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Groundwater is one of the main freshwater resources for the demand of potable water, agriculture and industry. The protection and remediation of groundwater sources have become an important issue in order to provide ...
  • Full scale modeling of geotextile reinforced lime stabilized cohesive soil retaining wall 
    Ismeik, Muhannad Hisham. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1996., 1996.)
    In this research, a reinforced soil retaining structure, "Kilyos Wall" is studied. It is the first known geosynthetic reinforced wall to be instrumented and tested in Turkey. Lime stabilized cohesive clay is used as a ...
  • Application of radial basis function collocation method in groundwater flow and solute transport problems 
    Çiftçi, Emin. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Groundwater is a vital source for potable water demand, irrigation and industrial activities. For more than a century many studies in the field of hydrogeology have focused on feasible supply of groundwater. For the last ...
  • Effect of bentonite slurry injection on pipe jacking forces 
    Namlı, Mücahit. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Pipe jacking is a technique used to form tunnels by pushing prefabricated pipes through the ground from an entrance shaft to an exit shaft. The main limitation for pipe jacking method is limitation of jacking distance. ...
  • Optimization modeling for a steel structure project with multiple sourcing points and stochastic delivery times 
    İleri, O. Serkan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Due to the consolidation trends in steel industry and advancements in logistics, steelmakers now face the challenge of choosing the most cost-effective sourcing network for a steel structure project. This research deals ...
  • Analytical modeling of reinforced concrete columns with lap splices 
    Chowdhury, Sharmin Reza. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    A possible source of seismic failure in existing reinforced concrete structures is loss of anchorage in column reinforcement, along deficient lap splices with short lap length and inadequate transverse reinforcement ...
  • Dynamic behaviour of geogrid reinforced segmental block walls under earthquake loads 
    Başbuğ, Ercüment. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    This study investigates the seismic performance of geogrid reinforced segmental block walls. For this purpose, shaking table tests were performed on four ½ reduced-scale geogrid reinforced segmental block walls at Bogazici ...
  • Earthquake behavior of geosynthetic-reinforced retaining structures 
    Selek, Öznur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Geosynthetic-reinforced soil walls have so far shown a very good performance during earthquakes. Nevertheless, additional tests like reduced-scale shaking table testing can be useful in understanding the effects of various ...
  • Parameters affecting the permeability of bentonite-granular soil mixtures 
    Karaoğlu, Selçuk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Clay is the natural material which is very effective when used as a liner for waste disposal because of its extremely low permeability. As the clay is used to prevent the leakage of hazardous wastes by minimizing the flow ...
  • Internal erosion of geosynthetic clay liners under high hydraulic heads 
    Özhan, Hakkı Oral. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    A geosynthetic clay liner is a material composed of a thin layer of bentonite sandwiched between two layers of geotextiles. Low hydraulic conductivity of the bentonite in GCLs makes them more impermeable. Geosynthetic clay ...
  • Experimental investigation and 3D cyclic finite element simulation of R/C exterior beam-column joints retrofitted with CFRP composite materials 
    Altay, Selçuk. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    The research presented attempts to develop carbon fiber reinforced polymer (CFRP) retrofitting techniques for improving existing reinforced concrete (R/C) beam-column joints designed for gravity loads only including common ...

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