Numerical analysis of pile-soil-structure interaction for different soil conditions

Turkey is located in a region where major earthquakes occur. Many codes have been issued for the construction of buildings to protect against the effect of earthquakes. The Turkish Building Earthquake Code (TBDY) published in 2018 has forced to calculate the pile - soil – structure interaction under poor soil conditions. Within the scope of this thesis, pile - soil – structure interaction has been examined by taking into consideration Method III proposed in TBDY 2018. The behavior of piles of different length-diameter ratios in sand and clay soils were investigated and the effect of earthquake level on pile behavior was investigated. From the results obtained, it was seen that the displacements on pile increased with the increase of the depth of the basement rock by the dynamic effects on the sand and clay soils. It was observed that the cohesion parameter of clay soils directly affects the behavior, and the deformation decreases with the increase of cohesion. In the study, the effect of earthquake levels in the design of TBDY 2018 was investigated and the same earthquake data were applied separately for DD1 and DD2 earthquake levels. When the earthquake level increases from DD2 to DD1, it is seen that the shear and moment effects of pile increase approximately twice.