Theoretical analysis and experimental study of vehicle-bridge coupled vibration for highway bridges

• Published in: Archive of applied mechanics (1991) 2024, Vol.94 (1), p.21-37
• Main Authors: Li, Zheng, Li, Zhidan, Zhang, Yunsen, Chen, Daihai, Xu, Shizhan, Zhang, Yu
• Format: Article
• Language: English
• Subjects: Classical Mechanics; Coupling; Dynamic response; Engineering; Finite element method; Highway bridges; Mathematical models; Model testing; Original; Reliability analysis; Roller bearings; Shafts (machine elements); Theoretical and Applied Mechanics; Vibration analysis; Vibration response; Vibration tests
• ISSN: 0939-1533; 1432-0681
• DOI: 10.1007/s00419-023-02498-x

Based on the theory of highway vehicle-bridge coupled vibration analysis, a program for vehicle-bridge coupling vibration analysis of highway bridges is developed using Intel Visual Fortran language. An accurate finite element model of the axle was established by measuring the parameters of the axle test model. And an experimental system of vehicle-bridge coupled vibration was designed. Then, based on theoretical analysis and experimental research, the reliability of the analysis program and test system was verified and analyzed the influence factors of vehicle-bridge coupling vibration test were analyzed, including carriageway location, vehicle-bridge mass ratio and bridge support form were discussed. The results show that: a lateral shift of 10 cm at different lane positions has little effect on the dynamic response of the axle. The axle mass ratio is an important factor affecting the dynamic response of the axle. With a vibration response being most obvious when the mass ratio is between 0.10 and 0.16 during the test process, the vertical acceleration response of bridge bearing 1 model (one end pad bearing, the other end roller bearing) was shown to be significant. This research will provide a helpful reference for others to analyze highway vehicle-bridge coupled vibration in the laboratory.