Structural vibration response analysis method based on random crowd walking model

The invention provides a structural vibration response analysis method based on a random crowd walking model. The method comprises the following steps: step one, according to a structural parameter needing to be analyzed, generating a random population number under different pedestrian flow densities and carrying out statistics of stride frequency values under different pedestrian flow densities;step two, determining whether the stride frequency meets normal distribution; if not, returning to the step one; if so, calculating a step size and pace of a single pedestrian of the random populationand calculating each step of walking time of a single pedestrian and time of walking the whole process of a single pedestrian; step three, controlling the crowd crowding degree by using the differences of entrance to structure time by pedestrians and calculating spatial displacement functions of an individual pedestrian at different times and time of walking the whole process by all pedestrians;step four, establishing a r