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http://dx.doi.org/10.7843/kgs.2011.27.3.041

Evaluation of the Stability of Quay Wall under the Earthquake and Tsunami  

Lee, Kwang-Ho (Dept. of Civil Engrg., Nagoya Univ.)
Ha, Sun-Wook (Dept. of Civil Engrg., Korea Maritime Univ.)
Lee, Kui-Seop (Dept. of Civil Engrg., Korea Maritime Univ.)
Kim, Do-Sam (Dept. of Civil Engrg., Korea Maritime Univ.)
Kim, Tae-Hyung (Dept. of Civil Engrg., Korea Maritime Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.27, no.3, 2011 , pp. 41-54 More about this Journal
Abstract
The present study analyzes the stability of waterfront quay wall under the combined action of earthquake and tsunami. Adopting the limit equilibrium method, the stability of waterfront quay wall is checked for both the sliding and overturning. Forces due to tsunami are compared with the proposed formula and the 3-D one-field Model for immiscible TWO-Phase flows (TWOPM-3D). Variations of the stability of wall are also proposed by the parametric study including tsunami water height, horizontal seismic acceleration coefficient, internal friction angle of soil, friction angle between the wall and the soil and the pore water pressure ratio. The present study about the stability of wall is also compared with the case when earthquake and tsunami are not considered. As a result, the result of numerical analysis about the tsunami force is similar to that of proposed formula. When earthquake and tsunami are simultaneously considered, the stability of wall in passive case significantly decreases and tsunami forces in active case are affected as a resistance force on the wall and so the stability of wall increases.
Keywords
Earthquake; Quay wall; Stability; Tsunami;
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