Studies on Bernatek’s footbridge in Cracow were conducted by The Cracow University of Technology in order to verify the way of constructions behaviour after almost 4 years of operation. Performed tests included free marches and runs of groups counting dozens of people and examined the influence of the synchronized actions of people marching along the walkway with specific frequencies (rhythm) of steps, on the structure. Verified where also footbridge’s answers to vandalism – a group of about 50 people performed synchronous excitation of the structure in selected areas of the footbridge.
Measurements were performed using the acceleration sensors mounted to the bridge in six sections vertically and horizontally. Also the dynamic change of power in selected hangers were measured.
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