Analysis on Stability of Anti-slide Pile Structure in Cohesive Soil Landslide
Taking the treatment of a cohesive soil landslide in Wuzhou-Liuzhou Expressway as an example,the formation mechanism of the landslide was analyzed.The stability coefficient of the landslide in the natural state is calculated to be 0.951 by the Morganstein-Price method,which was in the overall deformation-sliding state.The residual sliding force at the shear opening of the lower edge of the landslide is calculated to be 535.19 kN by the residual thrust method.After FLAC3D landslide model is established,circular anti-slide piles and gabion retaining walls are set up to analyze the bearing characteristics of circular anti-slide pile under different spacing.When the spacing is ranging between 2.0d and 2.5d(d as pile diameter),the soil arching effect between piles is the most obvious.After comprehensive analysis,2.0d(4.4 m)is determined as the pile spacing;since there is an unequal front and rear bending moment on the circular anti-slide piles,non-uniform reinforcement is adopted for the pile cross section.
万方数据
维普
