Strategy for consistent model parameter calibration for soft soils using multi-objective optimisation
Journal article, 2017

Constitutive models for soft soils require a large number of parameters to model the complex material response. One set of parameters should capture the soil response for various laboratory & in situ stress paths. This requires a new method to calibrate a consistent set of model parameters using test data from different load paths of classic geomechanical tests. The feasibility of the proposed method is demonstrated with the recently developed CREEP-SCLAY1S model. After a sensitivity analysis that highlights the model parameters for optimisation, an optimisation process for two different configurations is designed. The latter is successfully verified against artificially generated laboratory data.

CREEP-SCLAY1S

Soft soil

Multi-objective optimisation

Sensitivity analysis

Author

Jean-Philippe Gras

Chalmers, Civil and Environmental Engineering, GeoEngineering

N. Sivasithamparam

Norges Geotekniske Institutt

Minna Karstunen

Chalmers, Civil and Environmental Engineering, GeoEngineering

Jelke Dijkstra

Chalmers, Civil and Environmental Engineering, GeoEngineering

Computers and Geotechnics

0266-352X (ISSN)

Vol. 90 164-175

Subject Categories

Geology

DOI

10.1016/j.compgeo.2017.06.006

More information

Created

10/7/2017