Dynamic Analysis of Bridge–Train Interaction in High-Speed Railway Structural Engineering

Abstract

The dynamic interaction between high-speed trains and railway bridges is a critical factor influencing the safety, comfort, and longevity of railway infrastructure. This interaction involves complex coupled vibrations between the train, track, and bridge systems, necessitating advanced analytical methods for accurate assessment. Traditional approaches often treat these components separately, potentially overlooking significant interdependencies. Recent advancements have led to the development of integrated models that simulate the coupled dynamics of the train–track–bridge system. These models employ finite element methods (FEM) for structural analysis, multibody dynamics (MBD) for vehicle modeling, and consider factors such as track irregularities, wheel–rail contact, and environmental loads. Studies have demonstrated that high-speed trains can induce substantial dynamic responses in bridges, including increased vibrations and potential resonance effects. Such phenomena can lead to accelerated wear and fatigue of structural components, posing risks to both infrastructure and passenger safety. Therefore, understanding and mitigating these dynamic interactions is paramount. This paper reviews methodologies for analyzing train–bridge interactions, highlights key findings from recent studies, and discusses the implications for bridge design and maintenance strategies. By integrating dynamic analysis into the design process, engineers can enhance the resilience and performance of high-speed railway systems.Taylor & Francis Online+2Wiley Online Library+2Wiley Online Library+1