A shell-shaped concrete bridge is going to be erected along the railway line Koralmbahn between Graz and Klagenfurt using the Pneumatic Forming of Hardened Concrete (PFHC) construction method. The double-curved shell of the deer pass is built by lifting an initially flat hardened concrete plate with the aid of a pneumatic formwork and additional post tensioning cables at the circumference. This master-s thesis includes the description and analysis of a series of 16 preliminary four-point bending tests on rectangular concrete specimen. The aim is to determine the most suitable concrete-reinforcement combination for the transformation process from the plate to the shell. Using a numerical model of the bending experiments, which is calibrated to the test results, two-dimensional nonlinear analyses of failure mechanisms and variations of the reinforcement ratio are executed. Finally, the thesis describes a three-dimensional nonlinear simulation of the transformation process and presents some particularly chosen results.