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Probabilistic Seismic Hazard Analysis of Caisson-Type Breakwaters  

KIM SANG-HOON (Daewoo Engineering and Construction Co., Ltd,)
KIM DOO-KIE (Department of Civil and Environmental Engineering, Kunsan National University)
Publication Information
Journal of Ocean Engineering and Technology / v.19, no.1, 2005 , pp. 26-32 More about this Journal
Abstract
Recent earthquakes, measuring over a magnitude of 5.0, on the eastern coast of Korea, have aroused interest in earthquake analyses and the seismic design of caisson-type breakwaters. Most earthquake analysis methods, such as equivalent static analysis, response spectrum analysis, nonlinear analysis, and capacity analysis, are deterministic and have been used for seismic design and performance evaluation of coastal structures. However, deterministic methods are difficult for reflecting on one of the most important characteristics of earthquakes, i.e. the uncertainty of earthquakes. This paper presents results of probabilistic seismic hazard assessment(PSHA) of an actual caisson-type breakwater, considering uncertainties of earthquake occurrences and soil properties. First, the seismic vulnerability of a structure and the seismic hazard of the site are evaluated, using earthquake sets and a seismic hazard map; then, the seismic risk of the structure is assessed.
Keywords
Caisson-Type Breakwater; Probabilistic Theory; Deterministic Theory; Seismic Risk Analysis; Seismic Fragility; Seismic Hazard;
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