Dynamic Compaction And Roller Compaction Test Area Shihezi Airport Ground Treatment Effect Analysis

In this paper, we study the technical parameters and analyze the treatment effect of the foundation treatment in Shihezi airport, which is based on the foundation treatment in the field.Dynamic compaction method is a very economical and simple foundation reinforcement method, using the dynamic compaction method to reinforce the foundation, the effect is obvious, the construction is very simple, and economical and practical. The ground foundation soil in the dynamic compaction effect depth range is mainly silty clay, its geological conditions suitable for dynamic compaction method for foundation treatment, and the site is located in the suburbs, the open space, with the external conditions of the dynamic compaction. Using the dynamic compaction method for foundation reinforcement. Energy is mainly consumed in the vertical direction, so the low liquid limit of the reinforcement effect is very obvious, and the improvement of the soil parameters is obvious. The wet sinking coefficient(s) is more than 0.015, which is a collapsible loess. After using the dynamic compaction method, the wet sinking coefficient(s) was less than 0.015 in the range of 0-3m, and it eliminated the wet sinking. Strong dynamic energy levels in 1000 m k N, 2000 m k N and 3000 k N- m, with the increase of the energy level, the depth of reinforcement is also significantly increased, and when the energy level reached m- 6000 k N, the upper 0-5m of the wet trapping can be achieved, the range of the lower 5m, some of which is removed, some by the strong wet sinking into the middle wet, the impact depth is not very obvious increase. 6000 k N- M and 4000 k N- of- M and- 3000 k N are more obvious than those of M- 1000 k N, M- 2000 k N,- M16, and the dry density, dry density, moisture content, compression coefficient and moisture sink coefficient. Through the load test data, through the dynamic compaction method to deal with the foundation, the static load test data show that the ground of the wet subsidence of the ground, in accordance with the effect of dynamic compaction to determine the effect of the standard. The permeability coefficient of 6000 k N 0-5m m 4000 k N is very obvious, and the permeability coefficient of 5-6.2m is not obvious. The change of permeability coefficient of M 0-3m is very obvious, and the change of 3-4.2m is not obvious, which shows that the effect of M 6000 k N on dynamic compaction is about 4000 k N, and the depth of M is about 3m. This also shows that the depth of M 5m energy level for the elimination of the wet sinking is 4000 k N, and the depth of the m 6000 k N is 3m. In the depth range of the treatment, the permeability coefficient is obviously reduced, the strengthening effect is very significant, and the bearing capacity of the foundation design is satisfied.It is feasible to deal with the foundation of Shihezi airport runway by impact rolling technology, and can achieve the expected strength, bearing capacity and differential settlement control and other technical requirements. In the process of rolling times, the deformation of foundation settlement is slowly and slowly, and the foundation reaction modulus is increased significantly after impact rolling.