Input Track

Input of Tunnel Axis

The space curve of the tunnel axis is defined by nodes, which are connected with three-dimensional lines or spline curves. A tunnel track consists of two portal nodes which define the beginning and the end of the track and an arbitrary number of standard nodes in between. Therefore, it is convenient to start the drawing by positioning the portal nodes and all further interpolation points with the Node tool in the Top View of the document. The z-coordinate (height) of the nodes can be defined in the Side View or by opening the Object Properties dialog, where the height can be entered directly. An ASCII import functionality offers the possibility to import node positions from a list and automatically generate the tunnel track by connecting the listed nodes with splines.

All nodes are connected with their neighbours by using either the Line tool or the Spline tool. This defines the space curve of the tunnel axis as a sequence of track segments (lines or splines). The Edit tool can be used to move a node if the interpolated curve does not fit the original course. While moving a connected node, TuMan recalculates and displays the new course in real time. Better results can be achieved if the nodes have approximately the same distance to both neighbours.

Finally, the command Assign Cross Section Geometries have to be used for all track segments. If you have not drawn cross-section geometries yet, continue reading Input Cross Section Geometry.

TuMan offers the possibility to design multiple tunnel tracks within a single document. These tracks can be modeled independently of each other as only one track is active at a time. Different tracks can be connected to each other using the Junction tool. The Track List gives an overview of all tunnel tracks within the current project and offers the possibility to mange the tracks of the project.