Design, Constuction And Test On Soft Soil Ground Treatment Used In Methods Of AnJing Highway

The highway in AnHui has increased greatly since the first highway was built in 1991. Until end of 2006,the total length of it is near to 1747km.How to strengthen soft ground in most highway project is a common problem,which is difficult to resolve.Varous techniques of soft soil Ground treatment have been developed and each has its own merit and defect. Selecting a rational technique affects the quality,the investment and progress of the whole project.The design of the soft soil Ground treatment in AnJing highway project is introduced in this paper.The project has use several soft soil treatment method such as cement mixing pile,plastic drain bar,vibrator dry material composition pile. The main points of the basic theory,the design proposal as well as the construction technology of these soft soil foundation treatment techniques are described in detail. The merits and defects as well as the applicability of the soft soil foundation treatment techniques used in AnJing highway project are investigated referring to their ranges of application,treatment effects and view of construction.The result of this paper indicates that corresponding techniques can be applied to different soft soil foundation,and basing on the theories of various soft soil foundation treatment techniques,the rational technique can be determined according to the soil type,the foundationcondition,the road situation,the construction constrains and estimated budget so as to obtain the best treatment effect.