https://www.youtube.com/watch?v=MidTy10NV0Y
The simple structure function is relatively straightforward, acting as a small calculation tool within the software. It can be used to calculate the corner coordinates of structures such as abutments, culverts, and piers.
There are generally two construction methods for structures: Parallel with road and Ver.middle. The difference is that in the Parallel with road method, the Left-fore, Left-back, Right-fore, and Right-back edges are parallel to the longitudinal axis, while in the Ver.middle method, the edges are perpendicular to the longitudinal axis. Refer to the diagram below for details.
Parallel with road
Ver.middle
Let me demonstrate how this feature works.
The interface includes several input fields. First is the station: the center station of the structure, which is the stake number at the intersection of the structure axis and the track line.
Angle: The clockwise rotation angle between the structure axis and the track centerline in the direction of station increase. The input format is dd.mmss. For example, to input 15°10′20″, enter 15.1020.
Middle Line Offset: The offset value of the tunnel railway centerline relative to the design line of the track. It is usually left blank by default.
Left Dist./Right Dist./Fore Dist./Back Dist.: Parameters that define the dimensions of the structure. Left Dist. and Right Dist. are the distances from the intersection of the track centerline and the structure axis to the edges. Fore Dist. and Back Dist. are the perpendicular distances from the corner points to the structure axis.
After entering the parameters, click "Calculate". The software will automatically compute the design coordinates for the four corner points.(Input dimensions are illustrated in the diagram.)
If staking is required, click "Batch Staking" at the bottom right. The software will automatically enter the known point staking interface. The middle section of the software will display the positions of the corner points to be staked. You can select corner points for staking directly on the graphic or use the "Previous Point" and "Next Point" buttons to switch between staking points.
For detailed instructions on the staking process, please refer to the tutorial on known point staking.