The paper investigates the effects of the human-structure interaction (HSI) on the dynamic response based on a spectral model for vertical pedestrian-induced forces. The spectral load model proposed in literature can be applied for the vibration serviceability analysis of footbridges subjected to unrestricted pedestrian traffic as well as in crowded conditions, however, in absence of HSI phenomena. To allow for a more accurate prediction of the maximum structural response, the present study in addition accounts for the vertical mechanical interaction between pedestrians, represented by simple lumped parameter models, and the supporting structure. By applying the classic methods of linear random dynamics, the maximum dynamic response is evaluated based on the analytical expression of the spectral model of the loading and the frequency response function (FRF) of the coupled system. The most significant HSI-effect is in the increase of the effective damping ratio of the coupled system that leads to a reduction of the structural response. However, in some cases the effect of the change in the frequency of the coupled system is more significant, whereby this results into a higher structural response when the HSI-effects are accounted for.

Human-structure interaction effects on the maximum dynamic response based on an equivalent spectral model for pedestrian-induced loading / Bassoli, Elisa; Van Nimmen, Katrien; Vincenzi, Loris; Van den Broeck, Peter. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 744:(2016), pp. 1-12. [10.1088/1742-6596/744/1/012031]

Human-structure interaction effects on the maximum dynamic response based on an equivalent spectral model for pedestrian-induced loading

BASSOLI, ELISA;VINCENZI, Loris;
2016

Abstract

The paper investigates the effects of the human-structure interaction (HSI) on the dynamic response based on a spectral model for vertical pedestrian-induced forces. The spectral load model proposed in literature can be applied for the vibration serviceability analysis of footbridges subjected to unrestricted pedestrian traffic as well as in crowded conditions, however, in absence of HSI phenomena. To allow for a more accurate prediction of the maximum structural response, the present study in addition accounts for the vertical mechanical interaction between pedestrians, represented by simple lumped parameter models, and the supporting structure. By applying the classic methods of linear random dynamics, the maximum dynamic response is evaluated based on the analytical expression of the spectral model of the loading and the frequency response function (FRF) of the coupled system. The most significant HSI-effect is in the increase of the effective damping ratio of the coupled system that leads to a reduction of the structural response. However, in some cases the effect of the change in the frequency of the coupled system is more significant, whereby this results into a higher structural response when the HSI-effects are accounted for.
2016
744
1
12
Bassoli, Elisa; Van Nimmen, Katrien; Vincenzi, Loris; Van den Broeck, Peter
Human-structure interaction effects on the maximum dynamic response based on an equivalent spectral model for pedestrian-induced loading / Bassoli, Elisa; Van Nimmen, Katrien; Vincenzi, Loris; Van den Broeck, Peter. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 744:(2016), pp. 1-12. [10.1088/1742-6596/744/1/012031]
File in questo prodotto:
File Dimensione Formato  
Bassoli_2016_J._Phys_744_012031.pdf

Open access

Tipologia: Versione pubblicata dall'editore
Dimensione 878.21 kB
Formato Adobe PDF
878.21 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1121451
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact