This study deals with the so-called crown dowel KrL 75-36, a shear connector for steelconcrete composite systems. This dowel geometry achieved the best results in former Push-Out experiments made by Petraschek. Based on Petrascheks derived models to describe the impacting forces on the steel crown, the use of analysis models without consideration of concrete is verified. For this reason the FEM preparation of the full concrete model, examining a quarter-symmetric part of the push-out experiment, is described based on investigations of Antesberger and Iwancsics. Its results are compared to the ones obtained by using three different models without the consideration of concrete.
Strains, especially at the oxy-acetylene cutted surface and at the bottom of the steel dowel, are determined for a dynamic material fatigue analysis. Furthermore, new load models are investigated, in order to obtain better correlation with numeric results of the Push-Out experiment at the oxy-acetylene cutted surface. Regarding to Petraschek's models, the plastic and elastic collapse loads are determined. Therefore, different modeling of forces inside the crown dowel is being made.