The major unstable mode of rigid anti-sliding pile structure is soil body at the side of anchoring section is pressed to lose stabilization. For calculating fuzzy random reliability index and reliability of rigid anti-sliding pile structure

at first

according to the extremum of pile-side-stress ?y below anti-sliding pile sliding surface in two depths

structural performance functions of anchoring depth reliability analysis of rigid anti-sliding pile is set up respectively. While calculating

the method of definite value is utilized to compare two extreme values at first. The structural performance function corresponding to greater extreme value is adopted to perform reliability analysis of anti-sliding pile. Then considering the randomness and fuzziness of structural reliability analysis of anti-sliding pile

fuzzy random reliability analysis model is set up. Based on first-order second-moment method (FOSM)

the formula of calculating fuzzy random reliability is put forward. By using L-R type fuzzy numbers to describe the mean value and variance of random numbers

fuzzy numbers is disposed by decomposing theorem. Fuzzy reliability index and reliability of the structure are obtained. According to this method

a certain rigid anti-sliding pile is calculated by using MATLAB procedure. The fuzzy random reliability index and reliability of structure are obtained. The results of calculation and safety coefficient method have very good consistency.