Statistical Estimations of Geological Material Model Parameters from Cylindrical in-Situ Test Data.

摘要

A developmental study was performed to aid in the identification of soil properties from Cylindrical in situ tests (CIST) data. A mathematical algorithm was developed which, using prior estimates of the properties and velocity-time history data from the tests, provided improved estimates of the parameters in the soil model. The algorithm was tested using a computational experiment, i.e., a finite-difference code was used to generate a set of velocity-time history responses based on a predetermined set of parameters. The algorithm was then used to determine a set of parameters based on the data, and comparisons were made with the exact solution. After a number of cycles through the algorithm, a set of parameters was derived which provided satisfactory matching of the velocity-time histories.