The Research On The The Minimum Vertical Distance And Invalid Embedded Depth Of Embedded Section Of Anti-sliding

In the design of the existing anti slide pile,the anti slide pile is generally arranged in the smooth part of the sliding surface,and the embedded section is regarded as a semi infinite space.The stability of anti slide piles will be affected by the presence of slope or inclined terrain when the embedded section of the anti slide pile is caused by topography or artificial excavation.For the slope of the embedded section,the lateral bearing capacity of the anti slide pile will be reduced when the vertical distance of embedded section of anti-sliding is too small to reach the state of semi infinite space.The stability of the anti slide pile is affected by the slope topography directly for the slope of the embedded section.At present,there are few researches on the stability of anti slide piles in the slope or inclined terrain.It is necessary to research on the the minimum vertical distance in slope and Invalid embedment depth in inclined terrain,to provide reference for anti slide pile design and construction and stability calculation in slope or inclined terrain.In this paper,the method of selecting the minimum vertical distance of the anti slide pile in gravel soil is put forward,and the influence of each factor on the minimum vertical distance has been analysis by numerical simulation and physical simulation.Based on the minimum vertical distance,the calculation formula of the invalid embedded depth of anti slide pile is proposed.The main conclusions are as follows:(1)Based on the method of minimum vertical distance of slope foundation in the code for design of building foundation,the paper puts forward the method of selecting the minimum vertical distance of anti slide piles.According to the minimum vertical distance of the slope,the calculation method of the invalid embedment depth is put forward.(2)Using FLAC3 D numerical simulation study of effect of buried depth,slope,landslide thrust,action point of landslide thrust on minimum vertical distance,minimum vertical distance increases with increasing slope,landslide thrust,and decreased with the increase of depth,with little relation to action point of landslide thrust.And the accuracy of the method for the determination of the minimum vertical distance in numerical simulation is verified.(3)Using physical simulation experiment method to study of the effect of depth,slope,slope thrust on minimum vertical distance,and the effect on minimum vertical distance of these factors is the same with numerical simulation,and verify the accuracy of sampling method from physical simulation in the smallest Pro slope.(4)The formula for calculating the minimum vertical distance and the invalid embedment depth is fitted with the orthogonal experimental method.