Abstract
Strength characteristics of soil and reinforcement have potentially variabilities. It is important task for design to evaluate such variabilities quantitatively. However, the current design method using conventional safety factor can not show how safe the structure is. Several reliability analyses to take into account the uncertainties associated with the input parameters were applied to reinforced soil retaining walls with various heights in static condition for sliding and overturning modes. Consequently, the most seinsitive parameter on the limit state exceedance probability was the friction angle, and the second is the tensile strength of reinforcement. The safety average values of friction angle and tensile strength of reinforcement were clearly shown.
