Teräsratapölkkyjä

Teräsratapölkkyjä, which translates to "steel railway sleepers" or "steel railway ties" in English, are a type of railway sleeper manufactured from steel. Unlike traditional wooden or concrete sleepers, steel sleepers offer a distinct set of characteristics and applications within railway infrastructure.

Historically, steel sleepers were employed in various railway systems, particularly in regions where wood was scarce or where durability was a primary concern. Their construction typically involves pressing or rolling steel into a shape designed to provide the necessary support for the rails and to transfer the load from the track to the ballast. They often feature clips or fastening systems integrated into their design to secure the rails.

The advantages of steel sleepers include their inherent strength and durability, making them resistant to decay, insect infestation, and fire, which are common issues with wooden sleepers. They can also be lighter than concrete sleepers, potentially simplifying transportation and installation. However, steel sleepers can be susceptible to corrosion, especially in environments with high humidity or exposure to de-icing salts. They also have a tendency to transmit more noise and vibration than other types of sleepers.

In modern railway construction, the use of steel sleepers is less common compared to concrete sleepers, which have become the industry standard due to their longevity, stability, and cost-effectiveness in many applications. Nevertheless, steel sleepers may still be found in specific niche applications or in older infrastructure that has not yet been upgraded.