The Dynamic Response of a Steel Box-Girder Footbridge under Synchronized Human Stance Excitation

Abstract:

In order to research into the dynamic response of a steel box-girder continuous beam footbridge excited by a synchronised human stance excitation, a in-situ test and a code comparison were conducted. Sixteen model 891-B accelerometers of vertical, horizontal and lateral directions were instrumented on the bridge and the vibration signals were aqcuired at a sampling frequency of 512 Hz. The acceleration data were transformed into frequency domain to find out the fundamental frequency of the bridge, and the frequency weighted root-mean-square acceleration data were analysed to evaluate the bridge’s vibration serviceability under synchronised human excitation. Further more, the international standard of BSI5400, Bro2004, EN1990, and ISO10137 were applied to the aquired acceleration data to compare their applicability. The results indicate that the dynamic response of the footbridge will not invite uncomfortableness of the pedestrians.

• Periodical: Advanced Materials Research (Volumes 1049-1050)
• Pages: 383-386
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1049-1050.383
• Online since: October 2014
• Authors: Ju Bing Zhang*, Xian Zhang, Xiao Peng Li
• Keywords: Footbridge, Root Mean Square Acceleration, Synchronised Human Stance, Vibration Serviceability

References

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