A random crowd load model for human-induced vibration analysis

Based on the single-person force model simulated by Fourier series, taking into account the random nature of crowd walking, the relationship between the walking speed and the pacing frequency, the density and the velocity of crowd, a refined random crowd load model was proposed and the dynamic differential equation of the model was deduced and solved by general finite element software combined with self-compiling program. Finally, a numerical example was analyzed and the vibration serviceability of the structure was assessed using ISO 10137´s method. The load model proposed in the paper can give a good consideration to crowd loads, and avoid unreasonable parameter values in the analysis.