Load Models and Response Assessment of Lightweight Footbridges

<p>The dynamic design of pedestrian bridges has advanced considerably over recent decades, but challenges remain concerning load models, pedestrian-structure interaction, and user comfort. These issues are particularly relevant for lightweight footbridges. Through a simplified study based on typical pedestrian dynamics, this work explores the definition of load models and the relevance of pedestrian-structure interaction for high-frequency footbridges, evaluating its impact on the structural response. Additionally, the suitability of peak acceleration as a comfort indicator is examined. The findings highlight the importance of considering high-frequency harmonic components of loads and pedestrian-structure interaction for accurately assessing the serviceability and comfort of lightweight footbridges.</p>