Vibration characteristic of large span floor structure under moving load

Abstract:

To explore vibration characteristic of large span floor structure under moving load, based on the large span beam string floor structure of the National Fitness Center in Ejin Horo Banner, Inner Mongolia, the loading measurement and analysis of walking, running, jumping and standing up were conducted by using biomechanical force measuring platform. Considering all kinds of possible load condition, the finite element analysis (FEA) and field measurement were performed for vibration of large span beam string structure floor area. The results show that the dynamic magnification factor of walking, running and jumping is 1.2, 2.4 and 4.9 respectively. The FEA results of large-span floor vertical acceleration induced by pedestrian load excitation are in good agreement with field measurement results and theoretical calculation values.