Abstract
Research on the Train-Bridge Coupled Vibration and Dynamic Performance of Steel Box Hybrid Girder Cable-Stayed Railway Bridge
Highlights
With the maturity of technology and the rapid development of economy, the railway is going towards heavy-duty and high-speed, and the problem of coupled vibration of vehicles and bridges has become increasingly prominent [1]
According to the dynamic load test and Vehicle-Bridge Coupling Vibration analysis, the following conclusions are obtained: (1) The calculated results of vehicle-bridge coupling vibration agreed well with the measured ones, and the program could be used to analyze the dynamic performance of Railway cable-stayed bridges with steel box composite girders
Yadong YAO et al.: Research on the Train-Bridge Coupled Vibration and Dynamic Performance of Steel Box Hybrid Girder Cable-Stayed Railway Bridge indices of the vehicle, stability of the train and the running safety are calculated by the vehicle-bridge coupled vibration theory
Summary
With the maturity of technology and the rapid development of economy, the railway is going towards heavy-duty and high-speed, and the problem of coupled vibration of vehicles and bridges has become increasingly prominent [1]. The dynamic performance of railway steel box hybrid girder cable-stayed railway bridge is studied by combining vehicle-bridge coupled vibration theory with the field dynamic load test. Yadong YAO et al.: Research on the Train-Bridge Coupled Vibration and Dynamic Performance of Steel Box Hybrid Girder Cable-Stayed Railway Bridge indices of the vehicle, stability of the train and the running safety are calculated by the vehicle-bridge coupled vibration theory. The actual modal parameters and vibration response of the bridge structure are obtained accurately from the field dynamic load test, the actual working state of the bridge under different train running speed is tested, and the dynamic deflection, dynamic strain, lateral and vertical amplitude and acceleration of the bridge span structure under the moving load It is analyzed and evaluated whether the dynamic coefficients and the longitudinal and transverse stiffness of the bridge meet the specification requirements. The research in this paper can accumulate relevant information for the operation management and maintenance of this type of railway bridge, and provide relevant basis for these structural designs
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