Seismic stability, which is on sliding and overturning, is verified for a design of a caisson type breakwater if necessary. Static method is used in the practical design , which doesn't take the dynamic response of the breakwater into account. In this study, based on the framework of the performance based earthquake resistant design for caisson type breakwaters , the procedure for the case of applying the friction increasing mat is presented. Firstly , the necessity of earthquake resistant design is judged by the schematic chart. Secondly, dimension of the breakwater for the evaluation of earthquake resistant performance is calculated by the proposed method. Finally, earthquake resistant performance is checked by the methodology based on single degree of freedom system.
The Monte Carlo Simulation method is widely used for the evaluation of failure probability of breakwaters in view of sliding displacement. The method might be used more frequently in the future as the new technical standards for port and harbor facilities employ the performance-based design methodology. The accuracy of the result of the simulation depends on the pseudorandom number generating method and iteration number . This study aims at presenting the appropriate pseudorandom number generating method and iteration number for the evaluation of failure probability of breakwaters in view of sliding displacement.
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