Security Analysis of Embankment Stability Based on Reliability Theory

Based on confidence level theory,nonlinear property of embankment soil is. By applying non-linear finite element analysis, and combining with confidence level computing program, isoneph contour of stress level and shear resist intensity is obtained, by which the security coefficient and confidence index are analyzed. Then by reducing c and φ values, the security reserve coefficient of embankment stability is obtained. The exemplified case shows that when the design planning security coefficient of high fill embankment is close to the value of specification, satisfactory result could be obtained. The method is referable to security analysis of embankment stability and slope design.