DESIGN CRITERION FOR VIBRATIONS DUE TO WALKING

A design criterion for walking vibrations of broader application than previous criteria is proposed for steel floor or footbridge structures . The criterion is based on the dynamic response of steel structures t o walking forces, as well as the sensitivity of occupants to vibration motion. The criterion is applicable to structures with natural freque ncies below 9 Hz, where resonance can occur with a harmonic of the ste p frequency, but is extended beyond 9 Hz where footstep impulse respon se becomes important.