<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Contemporary floor vibration guidelines limit the discussion of walking-induced vibrations to single-pedestrian loading scenario. Nevertheless, the inclusion of more than one pedestrian in the vibration evaluation would result in a more realistic range of floor responses. In this paper, an attempt was made to experimentally and numerically investigate the combined effect of two persons walking simultaneously on an actual building floor. The floor fundamental frequency and damping ratio were obtained from physical heel drop tests and the footfall response was measured in a series of walking tests. A finite element model was created for prediction of floor responses under different walking scenarios. A probabilistic prediction was also performed where random variations in pacing rates, body weights and arrival times of the pedestrians were considered in a large number of Monte Carlo simulations. It was showed that the response due to a single person with resonant step frequency can be greater than that due to two persons walking at off-resonant pacing rates. However, the resonant response induced by two pedestrians can be 1.29–1.38 times greater than that caused by a pedestrian.</p>
</abstract>

Contemporary floor vibration guidelines limit the discussion of walking-induced vibrations to single-pedestrian loading scenario. Nevertheless, the inclusion of more than one pedestrian in the vibration evaluation would result in a more realistic range of floor responses. In this paper, an attempt was made to experimentally and numerically investigate the combined effect of two persons walking simultaneously on an actual building floor. The floor fundamental frequency and damping ratio were obtained from physical heel drop tests and the footfall response was measured in a series of walking tests. A finite element model was created for prediction of floor responses under different walking scenarios. A probabilistic prediction was also performed where random variations in pacing rates, body weights and arrival times of the pedestrians were considered in a large number of Monte Carlo simulations. It was showed that the response due to a single person with resonant step frequency can be greater than that due to two persons walking at off-resonant pacing rates. However, the resonant response induced by two pedestrians can be 1.29–1.38 times greater than that caused by a pedestrian.

Vibrations of a Low-Frequency Floor Under Various Pedestrian Loading Scenarios

Architecture, Civil Engineering, Environment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Vibrations of a Low-Frequency Floor Under Various Pedestrian Loading Scenarios"}

Contemporary floor vibration guidelines limit the discussion of walking-induced vibrations to single-pedestrian loading scenario. Nevertheless, the inclusion...

RMS acceleration (m/s²) for
f_P2 (Hz)	f_P1 (Hz)
f_P2 (Hz)	1.8	1.9	2	2.1	2.2
0	0.0062	0.0163	0.0070	0.0052	0.0071
1.8	0.0107	0.0200	0.0102	0.0080	0.0100
1.9		0.0211	0.0195	0.0167	0.0167
2			0.0082	0.0098	0.0105
2.1				0.0075	0.0089
2.2					0.0075

Excitation	Maximum a_RMs (m/s²) identified by
Excitation	Experiment	FE model	Random simulation
One person	0.0159	0.0163	0.0167
Two persons	0.0220	0.0211	0.0216

Vibrations of a Low-Frequency Floor Under Various Pedestrian Loading Scenarios

Online veröffentlicht: 04. Aug. 2022

Seitenbereich: 105 - 114

Eingereicht: 03. März 2021

Akzeptiert: 15. Sept. 2021

DOI: https://doi.org/10.21307/acee-2021-034

Schlüsselwörter
Coordination, Floor vibrations, Probability, Resonance, Walking excitation

© 2021 Huu Anh Tuan NGUYEN, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

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Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Summary of FE results for different walking scenarios

Summary of response levels

Vibrations of a Low-Frequency Floor Under Various Pedestrian Loading Scenarios

Online veröffentlicht: 04. Aug. 2022

Seitenbereich: 105 - 114

Eingereicht: 03. März 2021

Akzeptiert: 15. Sept. 2021

DOI: https://doi.org/10.21307/acee-2021-034

SchlüsselwörterCoordination, Floor vibrations, Probability, Resonance, Walking excitation

© 2021 Huu Anh Tuan NGUYEN, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Summary of FE results for different walking scenarios

Summary of response levels

Schlüsselwörter
Coordination, Floor vibrations, Probability, Resonance, Walking excitation