Dynamic behaviour of a gymnasium floor

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Journal titleCanadian Journal of Civil Engineering
Pages27077; # of pages: 194
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
AbstractTen 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.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number26403
NPARC number20377334
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Record identifier0013163c-a5e7-4285-aba4-fd3d64d3fcbb
Record created2012-07-24
Record modified2016-05-09
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