Vibration Analysis of a Long-Span Bridge with a Suspended Pavement System (SPS) Caused by the Vehicle Excitation

In this research, to figure out the vehicle induced vibration of suspended pedestrian system(SPS), which is designed for pedestrians walking through the road bridge, the vibration analysis method based on vehiclebridge interaction theory is established. The maximum acceleration responses with different vehicle speeds and road surface roughness are calculated. Some suggestions are given to control the local vibration of SPS. The study shows that with the same vehicle speed and road surface roughness, the maximum acceleration of SPS is much larger than the main girder. The acceleration responses are increased along with the increasing of road surface roughness, but it has weak tendency to increase with the vehicle speed. By increasing the cantilever stiffness and SPS's overall stiffness, the local vibration problems of SPS at the middle span are effectively controlled. However, the method of increasing deck stiffness doesn't have obvious effect for the vibration control of side span.

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