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How are rails laid during track construction on a rigid subgrade?
How are rails laid during track construction on a rigid subgrade?
The video shows the placement of precast concrete sleepers (bi-blocks) on the load-distribution slab, followed by the insertion of longitudinal reinforcement into the bi-blocks and the installation of the rails into the bearing plates of the bi-blocks. At the end of the video, a temporary rail joint is shown, followed by the height and alignment adjustment of the track.
Once the rails have been precisely laid and temporarily secured to all the sleepers, a thorough inspection of the entire system is conducted. Only when the track is perfectly aligned in both direction and height can the concrete pouring begin—the space beneath and between the bi-blocks is filled with concrete, which, once set, permanently stabilizes the entire structure. The rails and sleepers thus become an integral part of a single, rigid concrete structure, which is a key feature of the RHEDA 2000 system.
