Sarma Non-Vertical Slice Analysis featured in SVSLOPE® 2D

A feature of SVOFFICE™


Sarma (1979) recommended an extended wedge approach for limited equilibrium methods. In the Sarma method the critical horizontal acceleration factor Kc is calculated in a closed form. The solution obtained in the form of Kc can be used to determine the factor of safety, and the slices are not necessarily vertical. The effect of the shear strength on the internal shear surfaces can be considered in the analysis. SVSLOPE® 2D has added the Sarma Non-Vertical Slice method into its latest release as requested by our users. In this new feature:

  1. There are three different ways to calculate the interslice angles automatically. Moreover, these angles can be optimized. The user can also define the slice boundaries at any orientation. The boundaries can go beyond the slope ground surface or below the sliding surface. SVSLOPE® 2D will automatically consider the user defined slice boundaries during critical slip surface searching.
  2. There are two ways to define the interslice shear strength. It can be derived from surrounding material properties or it can be user defined. If there are discontinuities or faults, the user can define the specific interslice angle and shear strength along those defaults or discontinuities.
  3. Almost all the features which are available with vertical slice methods are also supported in non-vertical analysis. Features such as external loads, tension cracks, reinforcements, unsaturated soils, probability and sensitivity analysis, are all supported.
The Sarma method is available in the newly released 5.3 version of SVOFFICE™5.

SVSLOPE® continues to represent the new standard in slope stability analysis and SoilVision continues as the forerunner in 3D analysis.

 


 

If you would like more information on this feature, feel free to contact us directly.