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http://dx.doi.org/10.7843/kgs.2015.31.6.27

An Analytical Solution of Dynamic Responses for Seabed under Coexisting Fields of Flow and Partial Standing Wave with Arbitrary Reflection Ratio  

Lee, Kwang-Ho (Dept. of Energy Resources and Plant Eng., Catholic Kwandong Univ.)
Kim, Dong-Wook (Dept. of Civil and Environmental Eng., Korea Maritime and Ocean Univ)
Kang, Gi-Chun (Dam & Watershed Maintenance Dept., K-water)
Kim, Do-Sam (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Kim, Tae-Hyung (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Na, Seung-Min (Dept. of Civil and Environmental Eng., Korea Maritime and Ocean Univ)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.6, 2015 , pp. 27-44 More about this Journal
Abstract
An analytical solution of dynamic responses for seabed in finite and infinite thicknesses including shallow has been developed under flow and partial standing wave with arbitrary reflection ration coexisting field at a constant water depth condition. In the analytical solution, a field was simply transited to a coexisting field of progressive wave and flow when reflection ratio was 0 and to a coexisting field of fully standing wave and flow when reflection ratio was 1. Based on the Biot's consolidation theory, the seabed was assumed as a porous elastic media with the assumptions that pore fluid is compressible and Darcy law governs the flow. The developed analytical solution was compared with the existing results and was verified. Using the analytical solution the deformation, pore pressure, effective and shear stresses were examined under various given values of reflection ratio, flow velocity, incident wave's period and seabed thickness. From this study, it was confirmed that the dynamic response of seabed was quite different depending on consideration of flow, which causes changing period and length of incident and reflection waves. It was also confirmed that dynamic response significantly depends on the magnitude of reflection ratio.
Keywords
Partial standing wave; Flow; Shallow thickness; Finite and infinite seabed; Dynamic response;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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