Terrain explorer

 

 

In the terrains window there is a list of the terrains defined by the user in the database. Moreover, we can create a New Terrain, Modify, Delete, Copy or List existing terrains ~TERDEF, ~TERDEL, ~TERGEN and ~TERLST commands)

 

 

When creating a new terrain, the following window appears

 

 

On the upper right hand side of the window (General properties and geometry) the general data of the terrain are introduced:

• Ueth:      Id number of the terrain.
• Name:    Name of the terrain.
• NLayer:  Number of terrain layers.
• eaKcn:    Coordinate system the terrain is referred to.
• eaDir:     Axis which defines de gravity direction.
• SurfLv:   Surface level.
• b:            Inclination angle of the layers with the horizontal line.
• Q:           Surface pressure.
• wKey:     Label to define if the water table is taken into account in the analysis.
• wh:         Water table level.

 

On the lower right hand side (Layer properties) the different layers are defined by entering its parameters. These parameters are:

·         Layer:                       Number of the layer. Starting from the uppermost layer, consecutive as the level decreases.

·         Thick:                       Layer thickness.

·         Material:                   Number of the material applied to the layer.

·         Ballast Module:        Horizontal Ballast Module (used in the calculus of retaining walls). Three options can be selected: Boussinesq, Chadeysson or User Defined.

·         Coulomb:                  Type of earth pressure considered in the calculus. If this check box is not activated the material’s database earth pressure coefficients will be used (Rankine theory). If it is activated, the coefficients will be recalculated during the calculus to follow Coulomb’s theory.

·         d:                              This parameter is not available in this version of CivilFEM.

 

To change the properties of a previously defined terrain, the Modify button must be pressed. The window that appears is the same as the one described before (terrain creation), with the difference that the Ueth field cannot be changed.

 

 

Related commands:

~TERDEF

~TERDEL

~TERGEN

~TERLST