FACULTY OF ENGINEERINGCIVIL ENGINEERING


Geotechnical Engineering Laboratory - Ongoing Research

Solution of sheet pile walls and seepage problems by finite element method; rheological solution of consolidation problem; dynamic slope stability; dynamic compaction. Adaptation of the wedge shear test for the measurement of the shear strength of compacted granular soils. Foundation design in difficult soil conditions, in-situ testing of soils, dynamic slope stability correlation between soil parameters. Use of fly ash in geotechnical applications. 


• Measurement of shear strength of unsaturated fissured clays 


• Measurement of shear strength of gravels and crushed rock 


• Embankment dams 


• Stability of slopes 


Expansive Soil Behaviour:


• Swell amount and swell pressures 


• Suction methods 


• Lateral swell behavior 


• Soil Stabilization


Ground Improvement Techniques: 


• Stone columns, stress concantration and settlement improvement factors 


• Preloading with vertical drains 


In-Situ Testing of Soils: 


• CPT versus soil compressibility 


Pile Foundations: 


• Shaft capacity of driven and bored piles 


Unsaturated Soils:


• Rainfall triggered landslides   


• Triaxial testing of unsaturated soils


• Modeling unsaturated soil strength


• Soil-water characteristic curves 


• High-capacity tensiometers


Geotechnical Earthquake Engineering: 


• Liquefaction of sandy and silty soils. 


• Assessment of liquefaction behavior of sandy and silty soils under triaxial and simple shear testing conditions, extension to the field behavior. 


• Dynamic earth pressures on model walls under harmonic excitations 


• Behavior of earth and rock fill dams under earthquake motions 


• Stabilization of slopes by passive piles 


• Swelling of clayey soils 


• Use of fly ash for soil stabilization 


• Effect of surface and subsurface topography on earthquake ground motion parameters. 


• Field investigation methods and their implications. 


Funded Research Topics:


- Development of a more efficient retaining system for small-area deep excavations, BAP, ended in March 2012.


- Developent of high-capacity tensiometer and measurement of soil suction, BAP, ends in January 2013.


- Modeling and mechanism of rainfall induced landslides, TUBİTAK 1001, ends in March 2013.