Application Research On Treatment Technology Of Soft Soil Foundation In Highway Engineering

In order to improve the condition of the foundation, to improve the bearing capacity ofthe foundation, to ensure the quality of engineering, appropriate foundation treament methodsshould be carried out during the construction of the highway engineering. The treatment ofsoft soil foundation consists of a variety of methods, each of which has its applicable scopeand limitations. There is no one method that is the most reasonable during the processing.How to choose suitable and practical engineering treatment method has great significance.First of all, this paper analyzed the engineering properties based on the soft soil genesisand analyzed the adverse effects of soft ground may cause. Based on the features, applicationscope and strengthening mechanism of the current domestic and foreign, treatment methodsfor soft soil foundation was analyzed, and the soft soil and its treatment scheme is researched.Then based on the technical and economic factors from two aspects of soft foundationtreatment methods were compared and selected. Finally, K61+000-K67+800of Zheng ShiExpressway project in Henan province was selected. soft soil foundation treatment was thetechnology of CFG pile with geotextile fabric. And then, the construction technology,construction process, the common quality problems and construction measures and keytechnology of the project are discussed in the application. In the K63+400-K64+000project,soil fabric subgrade construction method with impact compaction was studied, and the reasonof spring condition was deduced. Then feasible solutions were put forward.By analyzing the general rules and influence factors of soft soil foundation settlement,combined with the settlement observation data of the project, the effect of soft soil foundationtreatment effect is analyzed and evaluated. Finally, CFG pile foundation treatment method andgeotextile with impact rolling method in subgrade construction are used together, the integralstability of the subgrade was strengthened, and the subgrade differential settlement wasreduced, the effect was comprehensive.