Load model for a single pedestrian

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (14) : 214-220.

XIE Wei-Ping¹，ZHANG Tao¹，HE Wei²，FENG Jin-Peng¹

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Abstract

For large span lightweight structures, the humanstructure vertical interaction is significant, so that a more precise walking load model is needed to predict the humaninduced vibration more accurately. An ASMD model II which consist of a single degree of freedom spring mass damping (SMD) system and an internal actuator was built and verified by experiments. The results show that when the natural frequency of a structure falls into the subharmonic resonance region, the impact of sub harmonic component, should be considered, otherwise, the calculation results will incline to be small. When the natural frequency of the structure falls into the mainharmonic resonance region, a pure moving force model will be conservative in its predictions as it does not consider the interaction between the pedestrian and the moving bridge surface. In contrast, the ASMD model II can better predict the humaninduced vertical responses of the structure.

Key words

pedestrian load model / interaction / actuator / subharmonic components / experimental verification

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XIE Wei-Ping1，ZHANG Tao1，HE Wei2，FENG Jin-Peng1. Load model for a single pedestrian[J]. Journal of Vibration and Shock, 2018, 37(14): 214-220

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