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

Identyfikatory

DOI

10.2478/ijame-2022-0038

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

walking excitation; step frequency; dynamic load factor; floor vibration; design guide

PL

podłoga; płyta żelbetowa; wibracja podłogi

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2022
• Tom: Vol. 27, no. 3
• Strony: 103--114
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr.

Twórcy

autor

Nguyen Huu Anh Tuan

• Faculty of Civil Engineering, University of Architecture Ho Chi Minh City, HCMC, VIETNAM

autor

Lythgo Noel

• STEM College, RMIT University, Bundoora, VIC, AUSTRALIA

autor

Gad Emad

• School of Engineering, Swinburne University of Technology, Hawthorn, VIC, AUSTRALIA

autor

Wilson John

• School of Engineering, Swinburne University of Technology, Hawthorn, VIC, AUSTRALIA

autor

Haritos Nicholas

• School of Engineering, Swinburne University of Technology, Hawthorn, VIC, AUSTRALIA

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)