Strengthening Treatment Method of Expressway Soft Soil Subgrade Based on Bored Pile Technology
In view of the problem of excessive settlement in the construction of expressway on soft subgrade,which affects the subsequent construction quality and construction safety,the drilling and cast-in pile technology is introduced to carry out the design and research on the strengthening treatment method of expressway soft soil subgrade. Before the construction of cast-in-place pile,the work of drilling,forming and clearing holes should be completed. Combined with the technology of bored pile,the construction of neck shrinkage control is realized. The reinforcement is completed through the construction of pipe grouting and the construction of steel cage. The application of the new reinforcement treatment method can effectively control the settlement of soft foundation and improve the safety level of expressway construction.