Rezonansowe poziome drgania parametryczne podwieszonych kładek dla pieszych

The possibility of exciting parametric resonance vibration in a suspended pedestrian bridge as a result of a premeditated action of a group of people, or of crowd movement, is analysed. Large horizontal transverse vibration are caused by the vertical periodic synchronised movement of people, which is analogical to the movements of a person on a swing. The problem studied is how large a group of people is able to excite dangerous parametric vibration in the system.