Application | GeoStudio |
Version | Latest version |
Primary Analysis | SIGMA/W |
Keywords | GeoStudio, SIGMA/W, triaxial, test, compression, CAU, CAD, drained, K0, Dafalias, Taiebat |
This example simulates a series of triaxial compression tests, which can be used to verify that the SANICLAY constitutive model is functioning properly. The simulations include πΎ0-consolidated undrained (CAU) and drained (CAD) triaxial tests performed at various overconsolidation ratios (ππΆπ ), following two distinct stress initialization procedures.
The first procedure (A) simulates the complete consolidation stress history before triaxial loading is performed, which consists of drained πΎ0-loading, followed by drained πΎ0-unloading to the desired ππΆπ . This procedure ensures proper initialization of SANICLAY’s internal parameters (πΌ, π½ and π0) prior to the beginning of triaxial loading.
The second procedure (B) uses direct stress initialization to the desired stress state, using well-known relationships to estimate πΎ0ππ and πΎ0ππ based on the soil’s friction angle φ. In this case, SANICLAY’s internal parameters are initiated based on the estimated πΎ0 values, rather than a complete stress history initialization.
The simulation covers both versions of the model, which are called RH 2006 and RH 2013, in this document. The verification includes comparisons with simulation results provided by Dafalias et al. (2006) and Dafalias and Taiebat (2013) and discussions relative to the SANICLAY theoretical framework. Results from corresponding laboratory tests are also used to highlight SANICLAY’s superior soil behaviour modelling capabilities. Users are encouraged to consult the SIMGA/W user guide while reading through this example.