[en] In order to investigate crowd size effect on building floors response, human-induced vibra-tions have been measured on a flexible composite floor exposed to various activities. Exper-imental Modal Analysis has revealed the existence of 20 mode shapes below 10Hz, with a fundamental frequency of 3.56Hz. The floor has then been exposed to various human-induced activities, covering both sedentary rhythmic activities (skipping and jumping) and ac-tivities where the individuals were moving randomly across the floor (walking and running). Accelerations have been registered at 10 different locations. By repeating these activities with a number of 1, 2, 4, 8, 16 and 32 participants, the group size effect has been evaluated through the measured accelerations. The observed trends not only differ for each activity but also slightly depart from well-accepted laws proposed by current design guidelines. A com-prehensive data analysis and discussion is provided in order to support the proposal of size-effect laws for these types of activities that will allow a more realistic vibration serviceability assessment of building floors with multiple usages.
Disciplines :
Civil engineering
Author, co-author :
El Asri, Youssef ; Université de Liège - ULiège > Doct. sc. ingé. & techno. (archi., génie civ. - paysage)
Denoël, Vincent ; Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Lukić, Mladen; Centre Technique Industriel de la Construction Métallique - CTICM > Département Recherche et Valorisation > Service Recherche Construction Métallique > 2021
Hjiaj, Mohammed; INSA de Rennes > Département génie civil et urbain > LGCGM - Groupe de recherche en ingénierie structurale > 2021
Couchaux, Maël; INSA de Rennes > Département génie civil et urbain > LGCGM - Groupe de recherche en ingénierie structurale > 2021
Language :
English
Title :
Crowd size effect on floor vibration response due to random and rhythmic excitations
Publication date :
July 2021
Event name :
ICSV 27 : 27th International Congress on Sound and Vibration
Event organizer :
International Institute of Acoustics and Vibration
Event place :
Prague, Czechia
Event date :
11-16 July 2021
Audience :
International
Main work title :
Proceedings of the 27th International Congress on Sound and Vibration, ICSV 27
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