Design method of embedded type anti-slide piles

Abstract

The invention discloses a design method of embedded type anti-slide piles and relates to the field of landslide control. The design method comprises the steps as follows: firstly, acquiring landslide system parameters; then, setting I groups of embedded type anti-slide piles with different pile parameters, and establishing a landslide system finite element model according to a Mohr-coulomb matching D-P criterion under a plane strain condition; finally, solving strength reduction safety coefficient Si of each group of anti-slide piles, and selecting pile parameters of the anti-slide piles closest the safety coefficient threshold STH as pile parameter solution values. Landslide systems with different pile parameters are established, the strength reduction safety coefficients of the landslide system with pile parameters are solved by the aid of landslide system finite element model, and the anti-slide piles closest to the safety coefficients are selected. With the adoption of the design method, the pile-soil combined action is fully considered, failure modes and safety coefficients after setting of the anti-slide piles are obtained through strength reduction calculation, the advantages of the embedded type anti-slide piles are truly played, the design method is safe, and the overtopping phenomenon is avoided.

Description

technical field [0001] The invention relates to the field of landslide control, in particular to a design method of an embedded anti-slide pile. Background technique [0002] Such as Figure 1-2 , the embedded anti-slide pile refers to the short cantilever anti-slide pile whose pile top elevation is lower than the surface of the slide body, and the difference from the full-length pile is mainly as follows: [0003] ① The length and length of the piles are different. The pile top of the full-length anti-slide pile generally reaches the current ground surface of the supporting part, while the pile top of the embedded anti-slide pile does not need to reach the current ground surface of the supporting part, but only needs to go beyond the sliding surface and enter the landslide body for a certain length It is enough that the landslide body does not go over the top within the safety factor. [0004] ② The thrust of piles is different. [0005] ③ At the same time, the section o...

AI Technical Summary

Problems solved by technology

[0011] The traditional anti-slide pile calculation adopts the limit analysis method to calculate the thrust, and uses the elastic foundation beam method to calculate the internal force of the structure. Therefore, in addition to the pile thrust and internal force, other useful design parameters cannot be calculated.

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