Abstract
Human presence can change the dynamic characteristics of human-structure interaction systems, i.e. particularly their damping and frequency. In many design codes, the pedestrian is regarded as a moving force (MF) while a more complete model, referred to as moving spring-mass-damper (MSMD) has received attention recently. Unlike the MF model, the MSMD model is able to take into account the human damping and stiffness effects. This paper is devoted to determining the instantaneous damping and frequency of the human-structure interaction (HSI) system subjected to a single and multiple pedestrians. Each pedestrian is modelled as a MSMD, and a methodology for determining the system damping and frequency properties is described. A simply supported beam structure is considered and modelled in modal space. The imparted pedestrian vertical force is modelled adopting the first four harmonics of Fourier representation using Young’s dynamic load factors. It is concluded that human presence can significantly increase and decrease damping and frequency of the structure, respectively and it is so important to consider human effect on the system’s damping and frequency in serviceability assessment of footbridges
Original language | English |
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Title of host publication | MATEC Web of Conferences |
Subtitle of host publication | EVACES 2015 - 6th International Conference on Experimental Vibration Analysis for Civil Engineering Structures |
Editors | Glauco Feltrin |
Place of Publication | Les Ulis France |
Publisher | EDP Sciences |
Pages | 1 - 7 |
Number of pages | 7 |
Volume | 24 |
DOIs | |
Publication status | Published - 19 Oct 2015 |
Event | International Conference on Experimental Vibration Analysis for Civil Engineering Structures (EVACES 2015) - Dubendorf (Zurich), Switzerland Duration: 19 Oct 2015 → 21 Oct 2015 Conference number: 6th https://www.matec-conferences.org/articles/matecconf/abs/2015/05/contents/contents.html |
Conference
Conference | International Conference on Experimental Vibration Analysis for Civil Engineering Structures (EVACES 2015) |
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Abbreviated title | EVACES 2015 |
Country | Switzerland |
City | Dubendorf (Zurich) |
Period | 19/10/15 → 21/10/15 |
Internet address |