The Old Road Widening Reinforced Embankment Stable And Secure, And Settlement Calculation

In recent years,with the high speed development of the national economy, the construction of the high grade highway is pushing forward forward with fast speed, at the same time the traffic volume of the high grade highway in the whole country of 90's in twenty centuries attains the saturated appearance ,so we should widen the reformation.The geogrid used in the slope of the high grade highway is getting more and more, So the research of slope stability and the system of structure of geosynthetic-reinforced soil has very important meaning .Because the special of the material and it with complexity of the soil interaction mechanism, many function mechanism needs to get to know, the analyzing calculation method needs to improve.This thesis will make use of the soil mechanics and theories of Elasto-Plasticity, aiming at the soft soil foundation up after old road widen, the asymmetry appear sinks to decline between the new roadbed and the old. Whose strength isnot enough but cause to face to transform, crack analyzing the reinforce mechanism that the material in old road widen structure from slope stability and differential settlement.Moreover, this paper is background with engineering example , and make use of the limit equilibrium method and large general purpose finite programe -ANSYS to carry on the stability analysis and its veriyty analysis. The deep understanding of the geogrid's reinforce function to the side-slope in the road will get to by the differential settlement of calculation of The geogrid reinforces the side-slope.