Tunnel Blocks
Item No.:
6001187
Product information Tunnel Blocks
TUNNEL BLOCKS
Practical support for tunnel construction
Tunnels are created by positioning rings alongside each other. These rings are formed by assembling pre-fabricated tunnel liner segments. Transporting and storing these pre-cast concrete segments poses a specific challenge in mechanical tunnel construction. This is because the tunnel segments are stacked on top of each other for transport. The segments are extremely heavy, which means the segments at the bottom of the stack and the bearing blocks (supports), which are often made of oak, beech, or tropical timber, have to bear a heavy load. The issue here is that wooden bearing blocks tend to warp, which leads to undesired heavy line and point loads. When the segments are assembled, precision is required down to the millimeter, so preventing any damage or deformation is of utmost importance.
hanit recycled plastic tunnel blocks are a secure and reliable solution for storing and transporting tunnel segments and t. Our blocks guarantee no corrosion during storage and remain dimensionally stable, even under high loads of up to 3 N/mm². The tunnel blocks are manufactured with a radius tailored to the project, precisely matching the shape of the tunnel segments and offering full-surface support. By comparison, when storing segments on a wood bearing, the radius has to be milled into the block later, which is an expensive process.
Durable and dimensionally stable
Our tunnel blocks come with markings that indicate the installation direction. The bearing blocks are also available with locking knobs on request. These specify exactly where the parts should be placed, resulting in precise vertical load dissipation, preventing eccentricities that the concrete can't withstand in the maturing phase, which can lead to cracks and even failure. The three-point bearing prevents torsional forces and supports the segments without putting them under stress. That's how tunnel blocks made of hanit reliably prevent damage and deformation to segments, to reduce the costs of tunnel construction projects and keep them on schedule.
The shapes and sizes can easily be adapted to specific project requirements, meaning that our bearings are not just useful for tunnel construction, but also in other areas where precast concrete parts need to be stored and transported.