Deep Research On Soil Arching Effect And Critical Pile Spacing Between Anti-slide Piles Reinforced Landslide

Soil arching effect is often happened between anti-piles and soil in geotechnical engineering and is mainly induced by non-homogeneous deformation of rock and soil material. Soil arching effect is a precondition of adjacent pertaining or anti-sliding piles working safely and cost-efficiently. In this study, based on a summary of previous researches, the mechanic of soil between anti-slide piles will be deeply researched, main contents include:1, The research of present state about the soil arching in anti-slide piles. The basic research method and the mechanic of soil arching.2, Based on the research of the soil arching mechnic, further confirmed the arching effect between anti-slide piles according to analysis the principal stresses, displacement contour, plasticity contour.3, Based on the finite difference of flac on the soil arching effect, analysis the distance of the piles, the cohesive, the friction angle and the interface of pile-soil influenced on the soil arching.4, On the summarization of previous researches on critical pile spacing and the soil arching between anti-slide piles, the static equilibrium conditions between the soil piles in a limit state and the compliance of Mohr-coulomb failure criterion in the dome section and arch foot triangular compression zone. a calculation formula for the anti-slide pile spacing is developed, in the formula, the effect of thrusting force distribution is taken into account. at last, the application consists with practice projects is cited to verify the formula, last, the application consists with practice projects is cited to verify the formula.