Geotechnical
Talren 4
Stability of Slopes and Anchored Walls

The latest design tool for checking the stability of geotechnical structures with or without reinforcements

Talren v5 is ideal for checking the stability of natural slopes, cut or fill slopes, earth dams and dikes. It takes into account various types of reinforcements, such as: anchors and soil nails, piles and micropiles, geotextiles and geogrids, steel and polymer strips.

A user-friendly and interactive interface
  • With for example: Permanent graphical display, definition of the profile using a mouse, rulers and grid, Undo function, zoom options, choice of the soil colour.
  • Several construction stages and calculation alternatives can be handled in the same file.
  • Display of all input data in the main window, through a global tree, including general data (geometry, soil properties, loads, reinforcements) and phases data.
  • Ability to load background drawings (.jpg and .gif formats) and adjust them to scale.
  • Various output options for graphical display and results (shadings, forces in reinforcements, detailed results for each failure surface, etc).
  • Wizards and databases, predefined partial safety factors (including those according to the French application standards of Eurocode 7).
Links with other software
  • Ability to load Plaxis files (from version v8 to version 2D 2012): loading of the geometry,
  • soil properties and mesh of pore pressures. Ability to import geometries defined with AutoCAD® (dxf files).
Calculation functionalities
  • Limit equilibrium calculation along potential failure surfaces using the Fellenius, Bishop or perturbations methods (with automatic search option for circular failure surfaces).
  • Calculation method based on limit analysis theory (J. Salençon), with logarithmic spirals.
  • Possibility to take into account hydraulic conditions.
  • Possibility to take into account seismic loads.
  • Each inclusion can work in: tension, compression, shear, bending.
  • Ability to use a combination of different failure criteria for the reinforcements and the soil to accurately model all the mobilised forces (principle of maximum plastic work).
Standards and recommendations
The part of the Clouterre report dealing with the design of soil nailed walls is largely based on the theories used in the development of Talren, which is recognised as one of the best design tools for reinforced soils.

Moreover, predefined sets of partial safety factors are provided with Talren v5: Clouterre, Eurocode 7…