Analysis of Geogrid Reinforced Effect of Soft Ground Under Traffic Loading

Firstly,the non-linear finite element method was used to simulate the effect of the different reinforced types of geogrid to variation characteristic of stress and differential settlement in the deep soft ground.Then,a kind of soil-geogrid dynamic interaction model was established.Through analyzing the soft ground deformation,stress level,tension stresses in geogrid and acceleration transfer characteristic,reinforced effect and mechanism of geogrid were studied under the traffic loading.The results show that three layers reinforced method for the reinforced sand blanket of the small gravels enwrapped by geogrids and the reinforced base layer can effectively reduce the civil embankment settlements and the stress levels in the soft ground.The impacted embankment ranges due to the traffic loadings are limited by the method.So it is a kind of feasible and effective reinforced method.