Cross-section Wizard

Based on the alignment and its cant values, this wizard will take you through a few steps to create the indata tables for the railway model.

You will be asked to define the:

• • From-To section

  • 3D Train profile

  • Rail and Ballast description

  • Ditch, cut, fill description

  • Substructure description

  • Calculation interval

After calculation of the indata tables are complete you will have to calculate the railway task to get the calculated cross-sections in relation to the calculation basis and illustration objects. This will in turn produce the 3D geometries.

NOTE: If the alignment has new or edited cant values, the Cross-section wizard has to be run again. At minimum, the option for calculating ballast (surface groups 1,2 and 3) has to be selected in step 4 of the wizard.

Step 1 - Railway Model Section

Reference track

Track ID refers to the reference alignment set in the railway task.

The from-to stations for this alignment is showing the available stations for horizontal and vertical.

3D Train

When a 3D train is defined with a section type and other information the model will produce a 3D solid for the extent of the train that runs on the track(s).

Section type: Select the section type to use.

Include electrical...: Set the checkbox if you want to include the area for the pantograph.

Insulation gap (mm): Adds an extra insulation bufferzone for the pantograph.

Quality class: Not in use.

Step 2 - Rail and Ballast Description

In the bottom section we define the sleeper type and the reference point for the vertical geometry. The values can be edited.

The following details can be edited:

• Sleeper (Ls) - width and height of the sleeper

• Ballast shoulder (Lb) - the width of the ballast outside of the sleeper

• Ballast slope (Sb) - the sideslope of the ballast

  • NOTE: The width of the surfaces where the ballast slope is applied will be automatically calculated when completing the wizard. These calculated widths will automatically be added to the railway surface description.

• Rail gauge - Distance between inside of rails

• Rail distance - Distance top center rails

• Ref. point for vert. geometry - This point will be the reference point for the vertical geometry and the rotation point for the rail and ballast.

• Bottom of rail - Bottom of lowest rail

• Top of rail - Top of lowest rail

• Center bottom rail - Bottom of the rails in the center of the track

• Center top rail - Top of the rails in the center of the track

View Parameters

This brings up an image of the cross-section, showing the parameters of step 2 and 3.

Step 3 - Substructure Description

The description entered here will set the rest of the railway cross-section including total width of formation level, ditches, fill and cut slopes. This is also were we add the rest of the super/substructure.

Surface description gives input to the rail surface description:

• Formation right (Lfr) - distance from center of track (right-most track when double track) to the right edge of the formation level

• Formation left (Lfl) - distance from center of track (left-most track when double track) to the left edge of the formation level

• Ditch slope (Ld/Sd): Width and slope of the first ditch surface after the formation level

• Ditch bottom (Ldb/Sdb): Width and slope of the ditch bottom surface

• Outer ditch slope (Lc/Sc): Width and slope of the first ditch surface after the ditch bottom

• Fill slope (Sf): The slope of the embankment fill surface. The width will extend to terrain using the given slope

• Soil cut slope (Sc): The slope of the soil cut surface. The width will extend to terrain using the given slope

• Rock cut slope (Sr): The slope of the rock cut surface. The width will extend to top of the subsurface surface that defines the top of rock

Pavement description gives input to the substructure description for the thicknesses below the ballast/formation level. Define the thicknesses for each of the structure layers for Formation, Insulation and Filter courses.

View Parameters

This brings up an image of the cross-section, the same as in step 2.

Step 4 - Calculation Options

In step 4 we do the actual calculation of the indata tables for the railway model.

This includes:

• ballast including rails and sleepers using the described cant related to the alignment geometry

• the result of the formation level including railway surfaces

• substructure layers

It is possible to recalculate the indata in the railwaymodel by running the Cross-section Wizard multiple times.

It is also possible to partially recalculate the indata by using the checkboxes.

• Ditch, cut and fill surfaces - calculates surface groups 4, 5, 6 and 7

• Ballast - calculates surface groups 1, 2 and 3 as an adjustment to the cant and ballast input

• Pavement (layers) - calculates the substructure/subballast layers

• Advanced pavement - calculates the detailed pavement description for each layer

Calculation interval 

This defines the minimum calculation interval for the railway model.

(It will set the value in the Settings > Sections. See documentation for Road task.)

NOTE: When having a railway model that uses KM stationing the calculation interval is performed based on the station list in the KM file.

Complete the wizard with 'Finish'.

After calculation of the indata tables are complete you will have to calculate the railway task to get the calculated cross-sections in relation to the calculation basis and illustration objects. This will in turn produce the 3D geometries.

NOTE

When the wizard is run a second time the existing values in the description will be overwritten. This is particularly important to note if you have done manual changes in indata tables for the railway model.

When appropriate, use the checkboxes to limit the changes that is being performed automatically by the wizard. If you need to keep some of the data that is being overwritten, then copy/paste the input of those tables to f.ex. a Excel document or similar.