Study On Observation Technique And Soft Foundation Treatment Of Expressway

The soft-soil foundation treatment of expressway is a systematic engineering, in which the soil characteristics, engineering geologic and loading condition, deformation mechanism, the technical maturation and the reliability of quality control should be considered. There are many techniques of soft foundation treatment to deal with the problems of the stability and deformation of the expressway embankment and foundation. The article introduce many techniques commonly used.For effectually controlling unitary stabilization and settlement of soft-soil foundation, observation should be done in process of construction to reach the purpose of validation and optimizing design, shorting time, reducing cost and improving quality for project. The article introduce the observation techniques of expressway. Work theories of observation instruments, inbuilt techniques and test points are particularly introduced in the article. At the same time, the article combining treatment condition and observation data of ground surface settlement, compaction settlement, lateral horizontal displacement and earth stress of expressway gives many scientific appraisements and summarization for treatment method. The article use the Plaxis procedure to forecast the ground surface settlement in relation to filling height and time.The article use forecasting quantity and actual observation quantity to give correction factor. The article use the AME method to forecast the final settlement and completion settlement of the foundation.