The Effect of Over Consolidation Ratio on the Deformations of Tunnels Constructed in Clay Soils

With the globalization of world, it has become necessary to create new routes for transportation due decrease in usage areas construction and accelerated living conditions. For these reasons, some road railway selected are passed through tunnels. In addition, with increase population metropolitan cities, necessitated by rail systems so tunnel constructions became a necessity here. However, tunnels made on clay soils can cause major problems. Due problems, change, projects cannot be completed, even during construction, tunneling devices stuck unusable. this study, deformations different over consolidation ratios were investigated using Plaxis2D program, which analyzes finite element method. The model was created New Austrian Tunneling Method (NATM) soil determined under static dynamic loading