2004 Volume 20 Pages 191-196
This paper describes the level-1 reliability-based design method in view of sliding deformation for caisson-type breakwaters with wave dissipating works. Reliability analysis based on FORM (First-Order Reliability Method) was conducted by using 37 cases of breakwaters constructed all over Japan. In this study, the model proposed by Moriya et al. for calculating sliding deformation was applied to performance function, 10 or 30cm was used for allowable sliding deformation and 8.2×10-3 was used for target failure probability. As a result of this analysis, partial safety factors were calibrated appropriately. Moreover, it was shown that rational and economical design would be possible by using this design method compared with the present design method based on factor of safety.
