Centrifugal Model Test And Calculation Analysis Of The Anti-Slide Retaining Structure

As a main engineering measure for conrtolling landslide, the anti-slide retaining structure has been widely used since 1950s. The traditional analytical methods of anti-sliding pile avoiding the interaction between the pile and soil Varying degrees. They take the soil and the anti-sliding pile into account respectively without considering their coupling , ealculation methods of anti-sliding pile are immature and should be more perfect and be supplemented so that it will approath the fact much closer.In this paper ,the history of the development of the slide-resistant piles are collated , The current principle of universal design calculation, design steps and the pile-soil dynamic interaction are summed up. The review of landslide thrust distribution research is presented. The calculation method of Internal force of the anti-sliding pile and the advantages and disadvantages of the method are compared.The basal theories of centrifuge model test and some potential problems in it are introduced. This Paper aim at the slide-resistant piles in high slope, though the centrifuge model tests and numerical simulation two kinds of ways to reveal the characteristic of deformation and stress changing of the slide-resistant piles in high slope of soil when reinforced in different ways.According to the different forms of centrifuge model test, Measuring the pile displacement the bending moment and earth pressure values ,drawning the front and back earth pressure distribution of the pile.The result of the test provides reference and compare for analysis of retaining structure and numerieal calculation.The three-dimensional model is created and captive test is studied by using the roke & soil engineering three-dimensional numerical calculation software Flac3d. through the captive test of the numerical calculation,the effects on the displacement and internal force of the slide-resistant pile and the distribution scale of landslide thrust in different rows of pile are discussed in this paper, which result from the different kinds of reinforcement on the slope.Then analyzing the changes of the pressure and deformation in the pile by changing the parameters of the sliding soil .At the same time, the earth-arch effect of anti-sliding Piles reproducted in the paper.Form three affects that the form of earth-arhc, earth feature and the interface parameter between the soil and the plie, the thesis research the earth-arch effect.At the base of the captive test , the earthquake wave is inputted from the rock,carry on the dynamic time history analysis on the pile and the landslide body, researching the earth pressure and the displacement of pile under earthquake, the earth pressure and the displacement of pile under different earthquake magnitudes, the earth pressure and the displacement of pile when the slop be reinforced under different kinds of ways.and then some laws about the earth pressure and the displacement of pile are gotten.