Experimental investigation on parameters of pedestrian load model up and down stairs

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (21) : 220-228.

DU Yong-feng1，LIU Lu-lu1，ZHU Qian-kun1,2，CHEN Kai1

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Abstract

The experiment has obtained 900 groups of three-dimensional loading curves human induced on flexible staircases, using the Fast Fourier transform, to figure out the distribution of each harmonic dynamic loading factor and indicate the discrete distribution of phase angle. And then using the wavelet transform could get a single load time-spectrum plot, reflecting the variability of frequency during human walking. Finally, the excitation human induced on floors was made a comparison with the load up and down stairs in terms of walking frequency, amplitude and other parameters, as well as the comparison between ascending staircases and descending staircases. So conclude that the pedestrian load up the stairs is at least 150% of load human induced on the floor and down the stairs is more than 300%.

Key words

flexible staircases / pedestrian load / Fourier series load models / dynamic loading factors / wavelet transform

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DU Yong-feng1，LIU Lu-lu1，ZHU Qian-kun1,2，CHEN Kai1. Experimental investigation on parameters of pedestrian load model up and down stairs[J]. Journal of Vibration and Shock, 2016, 35(21): 220-228

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