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Quality on rail

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Reading time: 4 minutes

How RSRG ensures a high-quality slab track.

For the Rhomberg Sersa Rail Group, quality control is not just a client requirement but a crucial factor in the cost-effectiveness of its own work. 

 

“Slab track is particularly important to us,” explains Project Manager Helge Grafinger. “After all, major benefits of this track system are low maintenance requirements and high precision.” And the sooner the RSRG rail technology specialist recognises drifts from tolerances, the easier it is to correct them. “Ultimately, clients have a twofold benefit,” says Grafinger. “On the one hand, they get the highest quality, for which, on the other hand, they pay less.”

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"Ultimately, clients have a twofold benefit. On the one hand, they get the highest quality, for which, on the other hand, they pay less."
Helge Grafinger
Project Manager R&D Reality Capture Projects

The RSRG’s “BIM Reality Capture” team carried out a pilot project on the Wendlingen – Ulm high-speed track (in Germany) to improve the quality control standard even more: 

1. Inspecting internal geometry on the concrete finishing machine

An IMU (Inertial Measurement Unit) wagon was connected directly to the concrete finisher. The horizontal and vertical curvature was automatically recorded and compared with the plan data. The results were sent to the cloud, where graphs were created in semi-automatic mode.

2. Verifying the concrete surface plane

Ensuring the correct placement of prefabricated parts for usability. This solution involved kinematic scanning of the surface and subsequent automatic detection of regular check points along the axis.

3. Final inspection of the internal and external track geometry

By combining static position measurements (total station) with kinematic 3D trajectory determinations (IMS), results could be generated at record speed in accordance with the specifications of the client, Deutsche Bahn.

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