The Vibration Serviceability of Footbridge and Tuned Mass Dampers for Vibration Control of Experiment Validation

With the development of materials and architectural aesthetics, more and more lightweight and long span bridges began to emerge. These footbridges have low frequency and low-damping characteristics. These may susceptible for human-induced vibrations and the pedestrian may feel uncomfortable to cross. Therefore, the footbridge designer need to recognize the issues of vibration comfort. The main objective of this thesis is assessment of vibration comfort of footbridges under pedestrian loading and analyze the reduction vibrations of the footbridge with TMD. There are summed up the evaluation process based on the foreign related research and analyze a case of domestic footbridge. Assessing whether or not the vibration comfort acceptable through compared the difference with measurement and simulation. After preliminary assessment of comfort, the vibration problem exist in this case can be found. This footbridge case adopted TMD to reduce vertical vibration. In this paper, there are analysis of effect of vibration reduction of SDOF system installed passive TMD and compared the measurement. The results show that the footbridge with TMD meets the requirements of comfort.