역해석법에 의한 피복재의 부분안전계수 산정

Evaluation of partial safety factors of armor units by inverse-reliability analysis

A reliability model of Level Ⅱ AFDA is developed to analyze the stability of armor units on the sloped coastal structures. Additionally, the partial safety factors of random variables related to armor units can be straightforwardly evaluated by applying the inverse-reliability method in which influence coefficients and uncertainties of random variables, and target probability of failure are combined directly. In particular, a design equation for armor units is derived in terms of the same criteria as deterministic design method in order to apply the reliability-based design method of Level Ⅰ without some understanding to the reliability analysis. Finally, it is confirmed that several results redesigned by the reliability-based design method of Level Ⅰ have satisfactorily agreement with results of CEM as well as those of Level Ⅱ AFDA.