Bridge expansion joints (BEJs) are equipped at the girder end of long-span railway bridges to ensure reliable transition track. BEJs should have suitable dynamic stiffness running safety and stability vehicle. To explore influence vertical on response vehicle, track, bridge, a three-dimensional vehicle-track-bridge coupled model is established, sleeper spacing vehicle speed taken into considera...

This study proposes a stress analysis method of reinforced concrete (RC) box girder based on damage to reveal the dynamic mechanical response and mechanisms bridge under moving vehicle load. The effect different mass, speed, strength, longitudinal reinforcement ratio single is investigated using solid finite element vehicle–bridge interaction elastic–plastic (a total 13 kinds loading schemes) t...

The design of high-speed railway bridges comprises a set of demands, from safety and serviceability aspects, to new types of equipment and construction solutions. In order to perform an accurate and realistic evaluation of the corresponding dynamic behavior, adequate analysis tools that take into account the complexity of the train-bridge system are required. These computational tools must be b...

This study establishes a short-time stochastic subspace identification (ST-SSI) framework to estimate bridge frequencies by processing the dynamic response of traversing vehicle. The formulation uses dimensionless description that simplifies vehicle-bridge interaction (VBI) problem and brings forward minimum number parameters required for identification. With aid analysis manages successfully a...

To estimate the fatigue life of long-span steel bridge more accurately, this paper proposes a method for estimating the fatigue life of long-span bridges by considering vehicle-bridge coupled vibration. Firstly, the universal equation of vehicle-bridge vibration is derived based on triaxial standard multi-scale model of fatigue vehicle and bridge, and relevant program for vehicle-bridge coupled...

The development of structural health monitoring systems for bridge structures necessitates improvements in the understanding of vehicle-bridge interactions. Direct measurement of the complex coupling that naturally exists between vehicles and bridges is a challenging undertaking due to the limitations of existing sensor technologies. However, the emergence of wireless sensors in the field of st...

This paper presents a finite element method (FEM) framework for the dynamic analysis of coupled vehicle—bridge systems under nearfield /far-field ground motions. A train car with two bogies is assumed to be represented sufficiently by a discrete, rigid multi-body system with thirty-eight degrees of freedoms (DOFs). The normal Hertzian contact theory and the tangential Kalker linear theory modif...