실용적인 보강토옹벽의 신뢰성해석 제안

초록

Evaluation of stability in traditional designing of reinforced soil structures is executed by examination of internal and external stability. Analysis of internal stability is for pull-out and ductile strength. Analysis of external stability is for settlement, overturning and sliding. Though reliability analysis has been developed to minimize inherent uncertainties of soil properties and analytical model, it is not welcomed by field engineer and designer because of its difficulty. In this study, system reliability analysis method for various failure modes of internal and external stability is proposed. Reliability method(U. S. COE, 1999) is adopted to calculate failure probability for each failure modes as a practical method and then, uni-modal bounds was used to evaluate system reliability. Because of complex consideration for various failure modes, it is possible to secure advanced safety by using simultaneous failure probability.