Reliability analysis

Hi

At this stage, we do not offer reliability analysis in PLAXIS.

We do have:

• Safety Analysis, using strength reduction to determine a factor of safety
• Under Expert tools > Sensitivity analysis and parameter variation, see https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/46127/sensitivity-analysis-and-parameter-variation which is based on this paper: https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/46104/application-of-the-random-set-finite-element-method-rs-fem-in-geotechnics 

There are some examples of the reliability analysis in combination with PLAXIS, see e.g.:

• https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/46096/structural-reliability-analysis-of-deep-excavations 
• https://communities.bentley.com/products/geotech-analysis/w/plaxis-soilvision-wiki/45472/reliability-of-quay-walls-using-finite-element-analysis 

In both cases, external tools were used to allow soil uncertainties to be included in the analysis. 
Nowadays, using the PLAXIS Python API, it has become easier to introduce frameworks like probability and stochastics into the analysis. A Python script can take stochastic input, change the soil parameters inside PLAXIS, calculate and return the soil parameters required results.