Einwirkung aus Anprall auf Fahrzeug-Rückhaltesysteme auf Straßenbrücken in Deutschland

In a research project, measurements of 26 crash tests were analyzed in order to develop a robust, manufacturer-independent load model for vehicle impact on vehicle restraint systems located on newly constructed road bridges. The paper shows how, by taking into account statistical data on vehicle weight, speed and impact angle in observed accidents, the actions derived from crash tests can be adapted to resemble the actual conditions on German roads, also considering a defined level of safety. The suitability of the impact load model for practical implementation is verified based on three case studies. Finally, the influence of the model on the final design and thus the economic feasibility is assessed. A standardized impact load model not only simplifies the tendering process for new bridges, but also facilitates the replacement of the vehicle restraint systems at a later date.