LEVEL-1 RELIABILITY-BASED DESIGN METHOD FOR BREAKWATERS COVERED WITH WAVE-DISSIPATING BLOCKS IN VIEW OF SLIDING DEFORMATION CONSIDERING WAVE EXTREME VALUE DISTRIBUTION

Abstract

This study develops the level-1 reliability-based design method for breakwaters covered with wave-dissipating blocks based on the sliding deformation in regard of wave extreme value distribution. We compared the failure probability based on the sliding deformation caused by single highest wave and that based on the cumulative sliding deformation during design service period (abbreviated as level-3 method). As a result of this study, we proposed the method to deteminie the target rcliability index for the level-1 design method by using the design conditions such as wave extreme value distribution and so on. Moreover, we showed that the proposed method is almost equivalent to the level-3 method in terms of reliability.