///Antonia Kohl PhD Defence: „Investigation of Dynamic Responses of High-Speed Railway Bridges under Consideration of Moving Load Models and Multi-Body Models“
Due to periodic patterns in the axle spacings of trains, the excitation of the bridge by successive axles may lead to resonance phenomena in the bridge. In this case, the bridge response increases gradually with each loading cycle and may reach very high levels, potentially leading to problems such as ballast instability. New developments of high-speed trains lead to problems concerning the validity of approaches included in the European standards for the assessment of railway bridges. For this reason, data of axle loads and distances for over 3,000 operating passenger trains was collected and served as the basis for a development of a new dynamic load model consisting of 20 model trains to represent the dynamic effects of all operating trains. In addition, the vehicle-bridge interaction effects were investigated using over 30 multi-body models of trains and about 100 parametrized single-span bridges.
The research of this dissertation was conducted within a joint PhD of TU Darmstadt and KU Leuven and defended in Darmstadt in 2/2025.
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