Dynamic Analysis of Multilayered Soils to Water Waves and Flow
Publication: Journal of Engineering Mechanics
Volume 133, Issue 3
Abstract
In nature, a soil profile generally consists of several heterogeneous layers. This study is aimed at discussing the interactive problem of oscillatory water waves and flow passing over multilayered soils. The soil behavior is considered as viscoelastic in the present mathematical model modified from Biot’s poroelastic theory. Employing this model, the dynamic response including the profiles of pore water pressure and effective stress in the multilayered soils is discussed. The results reveal that the perturbed pore pressure is different from that inside a single-layered soil where the thickness of the first soil layer is less than the water wavelength. The discrepancy of the vertical effective stresses between multilayered and single-layered soils is even much more apparent under the same conditions. Moreover, seepage force is examined and is found to be larger near the bed surface and the bottom of the first soil layer where soils are easily disturbed by external disturbance. The locations where soil failure might happen are found near the troughs of surface water waves.
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Acknowledgments
This study was supported by the National Science Council of Taiwan, R.O.C. under Grant No. NSCTNSC 93-2211-E-005-012.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 133 • Issue 3 • March 2007
Pages: 357 - 366
Copyright
© 2007 ASCE.
History
Received: Jul 8, 2005
Accepted: Aug 1, 2006
Published online: Mar 1, 2007
Published in print: Mar 2007
Notes
Note. Associate Editor: Alexander H.-D. Cheng
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