The use of Artificial Intelligence, Finite Element Modelling and Pressuremeter tests for geotechnical characterisation.

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4. The use of Artificial Intelligence, Finite Element Modelling and Pressuremeter tests for geotechnical characterisation.

Pressuremeter tests have been used for many years but the difficulty for interpreting its results has hindered its wide use.
Nowadays, with the rise of fast computers and readily available finite element softwares the problem of interpretation can
be overcome. In this manner, the test can be modelled and the soil parameters can be determined by matching the field
curve with the finite element model. In this way it is possible to characterise the soil and calibrate a constitutive model in
a single process. Even though the procedure appears straightforward, in practice a manual calibration can be time
consuming and tedious. In order to expedite this process and obtain a close match, a novel and powerful geotechnical
software (DAARWIN) that uses Artificial Intelligence is used. Hence, the calibrated constitutive model can be used to
predict many geotechnical problems. The proposed procedure is validated by comparing the modelled deformations
against the real deformations measured during construction of an 8.6m deep soldier pile wall, a four- and five-storey
building. The constitutive model used is the Hardening Soil Small Strain model and the structures are modelled in
PLAXIS 2D and 3D. The error in most cases does not exceed 1mm. 

XVII Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVII PCSMGE)

Oral Presentations MT 1 Geotechnical Characterization