Finite Element Analysis Of A New Curing Agent Churning Pile Subgrade Of Peat Soil

With the development of the society, the scale of city and urban road mileage increased rapidly, which made peat soil certainly used in urban road construction. The peat soil distributed in most areas of northeast, southeast and the western highlands of China and have the properties of high water content, together with strong thixotropic. So must be reinforced.There were many kinds of reinforcement program of peat soil, of which the most practical reinforcement is the curing agent.It was found that the effect of a new curing agent for peat soil reinforcement is obvious. However, the effect of the mechanical properties was not clear in the condition of actual road.Taking those above into account, the peat soil of Dian Chi was reinforced by the curing agent and establishment a three-dimensional model of road embankment in the area by using ANSYS. In the process of modeling, the selection of pile parameters, the settings of equal thickness piles-soil interface parameters when considering the circumstances the and the position and methods of loads is mainly mentioned. After, the calculation and comparative analysis of displacement and stress of static load and dynamic loads were made.The part of static analysis mainly showed that:(1) the trends and contrast of stress and displacement of roadbed model in three directions of pile reinforcement and non-pile reinforced;(2) the effect of entire roadbed of different lanes and all lanes on loads;(3) the comparative analysis of the theoretical data and simulated data calculated by elasticity. The part of dynamic analysis mainly showed that:(1) displacement and stress-time curve of roadbed at different speeds;(2) the compotation of the results of dynamic and static the maximum stress results.Above all, the main conclusions of this article showed:(1) In all cases, with the increasing of the distance of the load action positions, the stress and displacements of roadbed reduced. Compared with the pile reinforcement and non-pile reinforcement, the value of vertical stress and displacement is less.(2) The displacement and stress of all loaded lanes roadbed can not be simply superimposed by a single lane one by one. Applying all loads on the top of piles had the most effect on the piles. The effect of loading on the soil between piles is least and changed more evenly.(3) The form of the load of power-time curve and half-sine wave was completely consistent.(4)The gap of the results of dynamic and static analysis is small. So in the condition of the level of the road is lower, the static analysis was needed only.