Research On Soft Soil Ground Treatment Technique Of The Southern Sichuan Red Strata Area And Its Application

Under the external loads, the soft ground subsidence is too large and the duration is too long. Constructing the highway in the soft soil ground, the latent subsidence after construction would cause great harm to the traffic. So the soft soil ground should be reinforced using reasonable and effective measures. There are a great many techniques to deal with the soft soil ground. But the technique has its advantage and localization. Selecting a rational technique, which would affect the quality, the progress and the investment of the whole project.This paper narrates the definition of the soft soil, the study contents and significance. The paper summarizes the soft ground treatment technologies and the development situation. The paper introduces the soft ground trait in Southern Sichuan red rock subgrade and its engineering character. The paper analyses the advantage and localization of soft ground treatment technologies. Fuzzy mathematics and AHP theories are introduced, which build the fuzzy comprehensive evaluation method. Applying the Expert Consult Method to analyze the technique possibility of soft ground treatment and economic and environment influence, then gain the influence of all factors and appraisal result. Use Fuzzy mathematics to make the systemic and all-around evaluation. Transform the complex and dubious factors into a mathematical relation, so we can ascertain the ground treatment method, which would be the most excellent method to the soft ground in Southern Sichuan red rock subgrade.The examples of the soft ground are calculated, which in Southern Sichuan red rock subgrade. This model can provided the reasonable decision for the soft ground project, and the three methods (Preloading Method and Precompression of Combining Vacuum to Stack Loading Method and Jet Power Pile) have certain science rationality to the soft ground in Southern Sichuan red rock subgrade.