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Analysis of
pedestrian-induced lateral vibration of a footbridge that
considers feedback adjustment and time delay
Jia Buyu, Chen Zhou, Yu Xiaolin and Yan Quansheng |
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Vol. 12 (2017), No. 5, 617–632
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Abstract |
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Research on pedestrian-bridge dynamic interaction has intensified in recent years after the occurrence of several footbridge accidents caused by pedestrian-induced vibration. This study focuses on the analysis of pedestrian-induced lateral vibration of footbridges by considering the time delay and feedback adjustment that occur in the interaction between the pedestrians and the footbridge. A detailed nonlinear lateral vibration model is first established. Then, the bifurcation and stability of this model around the critical value of time delay is discussed using a qualitative method. Moreover, response amplitude and the critical number of pedestrians are evaluated using a multiscale method. Analysis of the results shows that the time delay and feedback adjustment play important roles in controlling the lateral vibration of the footbridge. |
Keywords
footbridge, nonlinear vibration, lateral displacement, time
delay, feedback adjustment
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Milestones
Received: 19 January 2017
Revised: 25 May 2017
Accepted: 30 May 2017
Published: 22 November 2017
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Authors |
| Jia Buyu | |
| School of Civil Engineering and
Transportation South China University of Technology Guangzhou China |
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| Chen Zhou | |
| College of Transportation &
Civil Engineering and Architecture Foshan University Foshan China |
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| Yu Xiaolin | |
| School of Civil Engineering and
Transportation South China University of Technology Guangzhou China |
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| Yan Quansheng | |
| School of Civil Engineering and
Transportation South China University of Technology Guangzhou China |
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