Distribution of land-slide thrust on anti-slide piles

In the existing engineering projects,the distribution of landslide thrust on anti-slide piles is approximately determined to be triangular,rectangular,or frapezoid based on rock characters of the sliding mass.A new method was proposed to improve the calculation of distribution according to stability of the mass sliding through a specified shear opening.It was assumed that the potential slide surface was composed of a part of the original slide surface and a circular surface through the specified shear opening.Firstly,the stability of mass above the potential surfaces was calculated and the minimum safety coefficient of the specified shear opening was determined.If this safety coefficient was less than the design value,then the landslide thrust of the corresponding slide surface was calculated by Janbu Method.The shear openings were specified at the pile from top to bottom with a certain interval.By this method,the landslide thrust at many points of the pile could be calculated.The increment of landslide thrust of the section between two neighboring shear openings could be obtained by comparing the landslide thrust of neighboring shear openings.So,the distribution of landslide thrust on the pile from top to bottom could be determined.