Analysis Of Stability Of A Soil Slope

Landslide is a kind of geological hazards in China,which has a wide range of influence.It is very rare in the world.Landslide besides caused huge losses to the people’s life and property,the event of the irreversible characteristic also makes people be afraid for it.Along with the development of numerical simulation technology,it is convenient and accurate to calculate the safety factor of slope by software,which provides a basis for the objective evaluation of slope stability.As the main supporting way of slope,concrete pile belongs to passive force structure,and the research on improving the safety factor of slope after adding pile is more concerned by the engineering community.This paper selects soil slope as the research object.Using FLAC3 D to study the factor of safety which the anti-slide pile joined before and after to the soil slope,it is concluded that the change law of slope and based on this,advances several reasonable anti-slide pile arrangement scheme,and contrast to get an economic and efficient arrangement.The main work is as follows:(1)Using FLAC3 D are discussed respectively in fixed slope rate downhill high impact on the safety coefficient and fixed slope length downhill rate influence on the safety factor,and analyze the plastic zone through and shear failure two judgment criteria,two criteria in most cases equivalence rules.(2)Have been established the model which includes pile structure unit of the slope,analyzes the addition of pile support and safety factor of slope change,changing to the buried depth on the factor of safety was studied,that concrete pile to improve the degree of safety of slope of deep reason is so near the sliding surface of soil parameters and to the overall force,thereby reducing the burden of soil on the sliding surface is studied.(3)Compared with the different arrangement of row piles,the layout scheme of row piles with maximum safety factor is found.(4)By means of numerical simulation,in the soil and pile to determine the parameters of to determine the single pile vertical and horizontal distance,comes to the conclusion that the glyph arrangement affects the safety factor is the essence of making full use of single pile distance conclusion.(5)Have been analyzed the stress state of the concrete pile,find the position of the maximum value of the moment,the position of the maximum displacement,so as to provide basis for the design of concrete anti slide pile.