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http://dx.doi.org/10.7843/kgs.2015.31.1.5

Verification of Numerical Analysis Technique of Dynamic Response of Seabed Induced by the Interaction between Seabed and Wave  

Kang, Gi-Chun (Dam & Watershed Maintenance Dept., K-water)
Kim, Sung-Woung (Dept. of Civil and Environmental Engrg., Korea Maritime and Ocean Univ.)
Kim, Tae-Hyung (Dept. of Civil Engrg., Korea Maritime and Ocean Univ.)
Kim, Do-Sam (Dept. of Civil Engrg., Korea Maritime and Ocean Univ.)
Kim, Jae-Hong (Infrastructure Research Center KWIE, K-water)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.1, 2015 , pp. 5-14 More about this Journal
Abstract
Seabed may undergo large excess pore water pressure in the case of long duration of high wave loading. This excess pore water pressure may reduce effective stress and, consequently, the seabed may liquefy. Thus, it is necessary to develop a numerical technique which can precisely evaluate the dynamic response of seabed due to wave action. In this study, a new numerical technique named mixed model (2D NIT & FLIP models) was proposed. The dynamic wave pressure and water flow velocity acting on the boundary between seabed and the wave field was estimated using 2D-NIT model. This result was used as input data in FLIP program for investigation of dynamic response of seabed. To secure the reliability of the mixed model, the numerical analysis results of the mixed model were compared with Yamamoto's solution and Chang's experiment results. The comparison results indicated that there were some differences between them, but the general trend of the effective stress increment and the excess pore water pressure along the depth of seabed was similar to each other. Thus, this study clearly supports the plausibility of the numerical analysis of the mixed model.
Keywords
Seabed; Wave action; Mixed model; Dynamic response; Excess pore water pressure increment; Effective stress increment;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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