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http://dx.doi.org/10.9765/KSCOE.2015.27.1.63

Bore-induced Dynamic Responses of Revetment and Soil Foundation  

Lee, Kwang-Ho (Dept. of Energy Resources and Plant Eng., Catholic Kwandong Univ.)
Yuk, Seung-Min (Korea Port Engineering Corp.)
Kim, Do-Sam (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Kim, Tae-Hyeong (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Lee, Yoon-Doo (Dept. of Civil and Environmental Eng., Korea Maritime and Ocean Univ.)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.27, no.1, 2015 , pp. 63-77 More about this Journal
Abstract
Tsunami take away life, wash houses away and bring devastation to social infrastructures such as breakwaters, bridges and ports. The coastal structure targeted object in this study can be damaged mainly by the wave pressure together with foundation ground failure due to scouring and liquefaction. The increase of excess pore water pressure composed of oscillatory and residual components may reduce effective stress and, consequently, the seabed may liquefy. If liquefaction occurs in the seabed, the structure may sink, overturn, and eventually increase the failure potential. In this study, the bore was generated using the water level difference, its propagation and interaction with a vertical revetment analyzed by applying 2D-NIT(Two-Dimensional Numerical Irregular wave Tank) model, and the dynamic wave pressure acting on the seabed and the surface boundary of the vertical revetment estimated by this model. Simulation results were used as input data in a finite element computer program(FLIP) for elasto-plastic seabed response. The time and spatial variations in excess pore water pressure ratio, effective stress path, seabed deformation, structure displacement and liquefaction potential in the seabed were estimated. From the results of the analysis, the stability of the vertical revetment was evaluated.
Keywords
bore; seabed; vertical revetment; dynamic response and behavior; effective stress path; excess pore water pressure ratio; liquefaction;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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