Abstract: Pre-stressed anchor cable anti-slide piles have been widely applied in regulating landslide engineering. However, its design and calculation theory far lag behind its engineering application. The uncertainty of rockmass material and the complexity of interaction between rockmass and structural system are not fully considered in engineering design. For this, reliability theory is used in the design calculation of anchor cable anti-slide pile and its reliability calculation model is built according to its failure form. A reliability calculation method for the structural system of anchor cable anti-slide pile by using both Monte Carlo method and PNET method is proposed, which not only makes full use of the high calculation accuracy of Monte Carlo method, but also takes into consideration of the correlation among various failure modes. Therefore, it is obviously more advantageous than single method. Practical engineering case has proven its feasibility and rationality, and therefore, it is of very important engineering significance.

Key words: Monte Carlo method, PENT method, Anchor cable anti-slide pile, Reliability