ANALYSIS OF RELIABILITY INDEX CALCULATION ON THE BASIS OF PLASTICITY LIMIT ANALYSIS |SLICE METHOD OF SOIL SLOPE

Based on the limit analysis upper bound theorem of soil plasticity mechanics and the traditional slice methods,this paper establishes the limit state equation of plasticity limit analysis slice techniques.According to the equation,the calculation formulas of reliability index are obtained. This method can achieve the change from definite value calculation to deconfirmative calculation.Moreover,the use of reliability index to evaluate slope stability has meaning of probability.