Sliding characteristics of anti-slide pile slopes with different pile spacing and row spacing based on transparent soil
In order to study the sliding process and characteristics of slopes supported by anti-slide piles with different pile spacing and row spacing,transparent soil model test combined with PIV digital image processing technology was adopted to conduct tests on the transparent soil of slope reinforced by anti-slide piles with diffe-rent pile spacing and row spacing,so as to study the displacement law and sliding failure characteristics of an-ti-slide pile slope soil under load at the top of the slope.The displacement vector diagram,displacement con-tour map and load-displacement curve characteristics of slope soil reinforced by anti-slide piles with different pile spacing and row spacing were analyzed.Results show that the sliding process of the anti-slide pile slope can be divided into three stages:stable,uniform,and accelerated deformation.The ultimate bearing capacity of the slope increases with the decrease of the pile spacing.The depth of the sliding layer of the slope deepens with the increase of pile spacing and row spacing.When the spacing is 3b,there are two sliding surfaces with different depths in the shallow layer of the slope and the middle of the pile body,manifested as the joint over-turning failure of the top shear and pile soil system.Based on the research conclusions,the following sugges-tions are put forward for engineering applications.Firstly,for important slope protection projects,the pile spacing and row spacing of square anti-slide piles should not exceed 3 and 4 times the side length of the pile section.Secondly,for slope engineering with low bearing capacity requirements,the pile spacing and row spacing can be appropriately increased to reduce construction costs.
anti-slide pilepile spacing and row spacingtransparent soil model testsoil displacement fieldslope sliding
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