- Tytuł:
- Development of dynamic load factors for human walking excitation for floor vibration design
- Autorzy:
-
Nguyen, Huu Anh Tuan
Lythgo, Noel
Gad, Emad
Wilson, John
Haritos, Nicholas - Powiązania:
- https://bibliotekanauki.pl/articles/2174209.pdf
- Data publikacji:
- 2022
- Wydawca:
- Uniwersytet Zielonogórski. Oficyna Wydawnicza
- Tematy:
-
podłoga
płyta żelbetowa
wibracja podłogi
walking excitation
step frequency
dynamic load factor
floor vibration
design guide - Opis:
- This paper discusses the derivation of a set of dynamic load factors for calculation of walking response on the basis of measurements made during a biomechanics research carried out with young adults. Firstly, a quite large number of experimental data on single footstep force were collected. The single footstep forces were then superimposed to generate the force time history for a continuous walk. This was followed by the transformation of the resultant force to the frequency domain from which the dynamic load factors for the first ten harmonics of a pacing rate can be extracted. A statistical analysis was employed on the dynamic load factors to acquire their design values in terms of the 90-th or 95-th percentile. The waking force function recommended by various design guides and that developed in the paper were then used in a comprehensive finite element model to predict the vibration level of a building floor. Current design guides on floor vibration normally suggest using four harmonics in the walking force whereas load factors for ten harmonics were developed in this paper. The acceleration response of the floor was found to increase by 5-33% when walking harmonics beyond the fourth harmonic were considered. The inclusion of higher harmonics would therefore lead to a more conservative estimation of the floor response.
- Źródło:
-
International Journal of Applied Mechanics and Engineering; 2022, 27, 3; 103--114
1734-4492
2353-9003 - Pojawia się w:
- International Journal of Applied Mechanics and Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł