Operational strength of tram waggon body within the combino-reconstruction

The certification of fatigue strength of the tram waggon body under variable amplitude is firstly performed in the field of light rail traffic within the reconstruction of the Combinotrams. Beside a calculative design a further durability test of the whole waggon body is carried out. The load spectra are provided on the basis of test runs. Based on a safety concept these loads are modified for the use within the calculative and experimental certification. The complete procedure and the safety concept are presented and explained in this paper. The work is performed in close collaboration between Siemens Krefeld and IMA Dresden.