Modelowanie obciążeń dynamicznych w formie przysiadów na kładkach dla pieszych

Dynamic forces generated by moving persons can lead to excessive vibration of the long span, slender and light-weight structure such as floors, stairs, stadium stands and footbridges. These dynamic forces are generated during walking, running, jumping and rhythmical body sway-ing in vertical or horizontal direction etc. One of the important type of dynamic loading of a sus-ceptible and light-weight structures can be the ground reaction forces generated during rhythmical-ly repeated squats. In the paper the load models of the ground reaction forces generated during partial squats have been presented. Elaborated models was compared to the forces measured during laboratory tests carried out by author in wide range of frequency using force platform. Moreo-ver, the load models were initially validated during dynamic numerical analyses and dynamic field tests of the exemplary footbridges.