TRAMWAY SUPERSTRUCTURE
Tramway lines require specific solutions to be identified in order to meet technical, environmental and aesthetic requirements. WEGH Group offers the “Arianna T-Slab” ballastless slab track system with a grass, asphalt or pebble finishing as well as the Floating Slab system and the cast-in-place “Top-Down” and “Bottom-Up” tramway superstructure solutions. In addition to the products above, we can offer pre-assembled concrete at-grade crossings, as well as design and construction of deposits for tramway vehicles.
ARIANNA T-SLAB SYSTEM
Arianna® T-Slab is a ballastless system consisting of prefab slab tracks made of prestressed reinforced concrete installed on a base foundation with the insertion of a special bedding layer to create a regular and even resting surface, thus compensating foundation irregularities.
It is a good solution when the line construction times are especially short as it allows for quick installation with known installation times, this feature being especially appreciated in the tramway industry as it minimises inconvenience to traffic and to the surrounding shopping areas.
Arianna® also offers the advantage of making the route transitable by pedestrians and vehicles, so it is particularly useful at points where the tramway route crosses the road.
Ariann®a T-Slab is available in standard version and in Arianna Plus version, which is designed for cases where high performances are required in terms of vibration damping in crucial sections of the route that are close to inhabited areas and where the historical and urban heritage needs to be safeguarded. Three surface finishing options are available: with grass, with asphalt and with pebbles or self-locking material.
FLOATING SLAB SYSTEM
The floating slab system is the best solution to maximise damping of vibrations dispersing in the surrounding areas. For this reason it is the perfect choice for sections where the tram runs close to historical monuments, densely inhabited centres, buildings with architectural and artistic significance, hospitals, and schools.
This type of superstructure is characterised by a large, cast-in-place reinforced concrete slab with prefab elements in it and a continuous elastomeric pad underneath the casting.
TOP-DOWN SYSTEM
The Top-Down system is a cast-in-place tramway superstructure.
It is adopted in cases when the available space is narrow – both in height and width -, which is quite frequent in tunnels or on viaducts.
The inclusion of an elastomeric pad underneath the in-place casting provides for medium to high vibration damping.
The Top-Down laying solution begins with the anchoring of the fasteners and the tracks, while the in-place casting is made at a later stage.
BOTTOM-UP SYSTEM
The Bottom-Up system is a cast-in-place tramway superstructure. It is adopted in cases when the available space is narrow – both in height and width -, which is quite frequent in tunnels or on viaducts.
The insertion of an elastomeric pad underneath the in-place casting provides for medium to high vibration damping.
The Bottom-Up laying solution is based on the casting of the foundation, first, followed by the installation of the fasteners and the tracks.