Numerical Simulation Of Composite Reinforcement Of Geogrid And Micro-pile On Expansion Soil Slope

Expansive soil has poor engineering properties because it's moisture and soften its hygroscopic expansion.Expansive soil slope instability is a common problem in engineering,research Expansive Soil Slope is meani ngful.Geogrid reinforced slope is the use of a wide range of materials,on the basis of previous studies on the use of FLAC3 D software,establish a reasonable three-dimensional numerical model to explore different geogrid-reinforcement schemes strengthening expansive soil slope program effectiveness,and proposed geotextile grid and mini-pile composite reinforcement program,analyze the effect of reinforcing expansive soil slope.Firstly expansive soil slope different geometries,different experimental des igns,using strength reduction of slope safety factor to give the boundary effect on the safety factor,proposed expansive soil-dimensional,three-dimensional model size selection recommendations.Secondly,according to the conclusions of the boundary effe ct,a three dimensional model of expansive soil slope analyze the impact of moisture absorption and swelling of expansive soil softening of expansive soil slope,different design geogrid reinforcement scheme,respectively horizontal,cross plus tendons way to analyze the impact of different programs on the stress and strain of the reinforcement,a comprehensive analysis of the impact of different programs on reinforced expansive soil slope stability,reinforced compare results better solution.Final design of the geogrid programs and micro-pile composite strengthening expansive soil slope,and strain analysis from the slope safety factor and stress analyzes of slope reinforcement effect of composite reinforcement program,and with the effect of a single geogrid reinforcement scheme was comprehensive comparison,the conclusion that better grid and micro-pile composite strengthening expansive soil slope effect.