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Coupling Vibration Analysis and Comfort Evaluation of Passenger-Vehicle-Bridge System
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Coupling Vibration Analysis and Comfort Evaluation of Passenger-Vehicle-Bridge System
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Journal Article
Coupling Vibration Analysis and Comfort Evaluation of Passenger-Vehicle-Bridge System
2019
Overview
Based on a continuous box girder bridge on Beijing Metro Line 5, a coupling vibration model of passenger-vehicle-bridge is established. According to the Lagrange equation, the differential equations of motion of the system are derived. The corresponding calculation program is written in Fortran language to study the dynamic response of passengers, vehicles and bridges. The difference between passenger and vehicle vibration responses are compared and then the passenger comfort is evaluated. The bridge is subjected to on-site vibration testing, and the measured data is used to verify the reliability of the calculation model. The results show that the numerical calculation results are consistent with the vibration change tendency of the measured data, and the amplitudes are relatively close. The established dynamic analysis model and calculation program have good reliability; the passenger's partial vibration response is different from the vehicle and has a certain hysteresis. According to the ISO2631 standard, the riding comfort level of the section is uncomfortable at part of the driving speed, and the passenger's comfort may be the worst at the middle position.
Publisher
IOP Publishing
Subject
/ Coupling
