Project thesis presentation :: 20.11.2018 :: 2pm
With the increasing speed and weight of trains, standards in building bridges are increasing rapidly as well. The structure is charged by steady and heavy loads. The structure’s Eigenfrequencies and the excitation frequencies must differ as much as possible, otherwise damage or even failure of the structure can occur. Therefore railwaybridges have to be measured accordingly. For this, in line with a concept for continuous detection, measurements on a bridge have been done.
In the following project thesis, a 2D and 3D model of the same bridge are created to execute a modal analysis, using finite elements, on them. The model is created with special attention to the pretensioned steel, the foundation, as well as diverse material properties. The results of these calculations are then validated with the results of the measurements, according to the quality of the model.
:: Keywords: Finite element method, modal analysis, pretensioning, modelling ::