The Research Of Mechanical Parameters And Relevance On The Soft Ground In Sichuan

Quaternary slope of low liquid limit of clay, silt and some high liquid limit clay are widely distributed in low mountains and hilly area between the valley landforms in Sichuan Province.compared with the rest of the soft soil, its void ratio, shear strength and other parameters are generally beyond the reach of soft soil index. But its physical-mechanical properties are slightly stronger than the soft soil in "Technical specifications for design and construction of highway embankment on soft ground " JTJ017-96.Several highways in Sichuan Province, such as ChengMian Road, Neijiang Road and so on go through the soft ground region. Since the first self-provincial highway construction began, but for the exploration and treatment method is studied, the lack of design parameters about Sichuan soft ground and disposal technology studied and summarized. For these reasons, we combine with Sichuan Provincial Communications Department's issue, "The characteristics and exploration treatment key technical of Sichuan soft ground", and study Sichuan soft ground index.In this paper, main contents are as follows:(1) By reading a lot of domestic and foreign literature about the soft aspects, we collected the information related Quang Nam, Le Yi, Cheng Ya such as Highway 11. Based on the principle of Highway Engineering Geology Division, combined with the main influence of soft ground as follows:the topography, geological age, rock characteristics on the territory of Sichuan, we proceed the reasonable soft partition, and the final preparation of the soft ground in Sichuan Province Engineering Geology Division map.(2) Applying Grubbs rule to the territory of Sichuan, the actual monitoring test abnormal soft data are removed, then the physical mechanics of the regional indexes such as w-Ps, Cv-Ps, Cr-Ps and so on are made a scatter plot analysis, the final obtained the corresponding range of values of soft foundation design parameters, design and construction of the actual construction of a reference and guide.(3) Applying Origin software to do regression analysis with the practice monitoring data, which the highways distributed Sichuan soft ground. Basing on a regression analysis principle in mathematical statistics, we adopt a variety of curve fittings.According to Cv-Ps, Cr-Ps and other physical and mechanical indexes, we build corresponding regression equation. According to the correlation coefficient r value indicates that:the correlation between the physical and mechanical indexes significantly, and the error is controlled within the scope. The soft foundation system partition in this paper is certainly feasible, and it is verified.(4) Due to many factors of the influence of physical and mechanical indicators, and there have internal relations between them, the paper finally adopts Eviews software to do multiple linear regressive analysis about the physical and mechanical indexes CV-PS-P; ES-PS-P of the regionâ…¢3. We get empirical equation within the soft ground in Sichuan. It is not only for servicing the design of engineering, but also working as reference for inspecting indicators of laboratory experiment.