Experimental Study On Ground Treatment Of A High Fill Airport

The bearing strength and stability control of the foundation has always been the key to the success of civil engineering construction.And high filling airport construction because of its particularity,the bearing capacity of the ground made a strict request.How to ensure the strength and stability of the high filling foundation is the key issue of the construction of the high filling airport.In this paper,based on the experience of high-filling airport construction project in the southwest of China,this paper,based on the relevant experience of the foundation treatment of the high filling airport,and according to the engineering geology of the field,through the relevant field test and numerical simulation,Processing methods were discussed and analyzed,the following conclusions:(1)After referring to the main method of high fill foundation treatment in similar situation,three kinds of treatment methods are put forward for the foundation treatment of the field: the dynamic compaction method is used to reinforce the foundation,the dynamic compaction method is used to reinforce the foundation and the multi-The After the field test,the three methods were tested in the field and the effect of the treatment was tested.The results showed that the treatment effect was good.(2)By the dynamic compaction method,dynamic compaction replacement method,multi-pile composite method to strengthen the foundation,the bearing capacity requirements can exceed the design value.But the reinforcement depth of the three methods is different.The effective reinforcement depth of the dynamic compaction method is about 4m,and the effective reinforcement depth of the dynamic compaction method can reach about 5.6m,and the multi-pile method can be controlled by the pile ’s depth.The reinforcement depth can reach the top surface of the bedrock.(3)After the field test is completed,the numerical simulation analysis of the field test model is carried out.The stress and strain of the soil under three kinds of methods are analyzed by numerical simulation software,and the regularity of the soil is obtained.