Evaluation of Floor Vibration in a Biotechnology Laboratory Caused by Human Walking
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Volume 22, Issue 3
Abstract
A floor supported on long-span beams, which was designed to accommodate bio research instruments, is evaluated for vibration induced by people walking. First, a brief review in vibration criteria is given. The variation of force time histories imposed by people’s feet on supporting objects is also discussed. Both beam and floor finite-element models are then used to simulate the local walking response of the floor mathematically. Footfall forces are applied to the finite-element models via triangular distribution function. A comparison of the time history analysis results with the vibration criteria shows that the floor performs well under people walking. Field measurements were also conducted after the completion of the construction. The measured results show a good correlation with the finite-element analysis results. During the analyses, it was also found that as long as the local floor model covers a structural bay, the boundary conditions of the floor model do not affect the response much. Using an equivalent constant footfall force function can produce similar results compared with those obtained using a more sophisticated force function.
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Acknowledgments
The writers would like to express their thanks to Ms. W. Y. Mao and Mr. W. H. Cheong of the Jurong Consultants Pte Ltd. Without their support, this project would not have been possible. The field data measured are due to the credit of Professor J. M. W. Brownjohn of the University of Sheffield. The writers express their gratitude.
References
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 22 • Issue 3 • June 2008
Pages: 122 - 130
Copyright
© 2008 ASCE.
History
Received: Apr 28, 2005
Accepted: Aug 23, 2005
Published online: Jun 1, 2008
Published in print: Jun 2008
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