Abstract: “Earthquakes can cause soil deformations if there is no prevention and improvement. Failures occur as a result of intolerable deformations. Stone columns and Jet-Grouting methods are mostly used in Eskisehir, Turkey. In this study, the modeling studies of soil deformations are presented for improvement types and different earthquake effects. Models are performed by using Plaxis 2D software dynamic module and the results are compered. As a result, soil improvement techniques are needed and chosen carefully because some methods can be insufficient to prevent deformations caused by strong earthquakes.”

Keywords: deformations, earthquakes, plaxis, stone column, jet-grout