Reduction of Vibrations due to Foundation Slabs
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 132, Issue 4
Abstract
This paper investigates the reduction of vibration due to the foundation slab both in horizontal and vertical directions. Similar reduction efficiency of the foundation slab was obtained among three-dimensional finite element analyses, field experiments, and the averaging scheme of the rigid slab theory. Then, two formulas fitted from numerical simulations were generated. Using those two simple formulas, one can estimate the reduction efficiency of horizontal and vertical vibrations due to foundation slabs. In summary, a suitable mat foundation can significantly reduce the horizontal vibration transformed from soil. The reduction efficiency depends on the size of the mat foundation over the soil wavelength. Enlarging the thickness of the foundation slab can decrease the vertical vibration transferred from soils. However, it is difficult to reduce vertical low-frequency vibrations for a reasonable slab thickness.
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Acknowledgments
This study was supported by the National Science Council, Republic of China, under Contract No. NSC92-2211-E-006-073. The writers would like to thank the National Center for Research on Earthquake Engineering (NCREE) in Taiwan for supporting the experimental equipment, and the Southern Taiwan Science Park Administration in Taiwan for providing the standard factory building.
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Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 132 • Issue 4 • April 2006
Pages: 511 - 520
Copyright
© ASCE.
History
Received: Jul 20, 2004
Accepted: Sep 12, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
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