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Dynamic behaviour of a gymnasium floor

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
Subjectgymmasiums; vibrations; mode shapes (vibrations); natural frequencies; vibration control; dynamic loads; floors; resonant frequencies; vibration tests; resonant frequencies; mode shapes; dynamic loads; dynamic response; Vibrations; gymnase; vibration (onde); mode vibratoire; fréquence propre; controle des vibrations; sollicitation dynamique; plancher; fréquence de résonance
Abstract
Ten mode shapes, natural frequencies, and modal damping values have been measured for a steel joist concrete-slab floor spanning 32.1 m. From ambient vibrations and steady- state shaker tests the frequency of the fundamental mode was determined to be 3.5 Hz, and the modal damping ratio to be approximately 1% of critical. A comparison of vibration criteria in Appendix G of CAN3-S16.1-M84 confirms satisfactory performance for walking, but for other rhythmic exercises distrubing vibrations developed. These occured primarily at the forcing frequency of the exercises and not at floor resonance frequencies. Values of dynamic load factors, and, for rhythmic loadings of this floor were evaluated in accordance with the guidelines on floor vibrations in the Commentary to the National Building code of Canada 1985.
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  • Canadian Journal of Civil Engineering 13, no. 3 (June 1986): 270–277.
LanguageEnglish
Peer reviewedYes
IdentifierIRC-P-1409
NRC numberNRCC 26403
NRC-IRC-1953
NPARC number20377334
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Record identifier0013163c-a5e7-4285-aba4-fd3d64d3fcbb
Record created2012-07-24
Record modified2020-06-06
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