GeoStudio Strength Reduction Stability Analysis Example

This document is an example file demonstrating the strength reduction stability analysis using GeoStudio software. It outlines the procedure for determining the factor of safety by incrementally weakening soil properties in an elastic-plastic finite element analysis until failure occurs. The analysis employs mobilized strength properties for friction angle and cohesion, followed by a systematic reduction of these parameters. The example verifies the strength reduction stability procedure in SIGMA/W by comparing it to established methods from Dawson et al. (1999). It details the numerical simulation process, including the use of In Situ Gravity Activation analysis and Stress Correction analysis, to ensure all stress states remain within legal limits. The results section discusses the findings from the strength reduction stability analysis, including the calculated safety factors and the behavior of the slope under various conditions. The document concludes by confirming the effectiveness of the SIGMA/W method in slope stability analysis.