Statistical and Regression Analysis of Physical and Deformation Indexes of Super Deep Soft Soil in Bogota Area

Le résumé fourni par la source

The Bogota metro project is located on a lake plain in a giant bowl-shaped basin, forming a layer of highly compressible soft clay more than 50 meters thick. The soft clay involved in the project area is mostly high plastic clay (CH), low plastic clay (CL) and high plastic silt (MH), and the proportion is small. The main physical and deformation indexes of soft clay in this site have statistically analyzed and regression analysis has carried out. It is shown that the main physical indexes of soft clay can be regarded as normal distribution except the specific gravity, and the coefficients of variation are 0.320∼0.436; the correlation coefficients between the main physical indexes of clay are given, and the corresponding fitting expressions are made; The deformation index is considered to be log-normal distribution, the empirical formulas between deformation indexes and main physical indexes are established.

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