Railroad crossings and crossings between platforms


Railroad or tramway crossing produced by ZWG, built from concrete tiles (forming the inert mass), filling the interior with a flexible rubber part. The flexible rubber part adheres tightly to the foot and the neck of the rails for the entire width of the crossing, and dampens vibration and noise. In the aim of limiting the possibility of shifting of the concrete tiles in relation to one another along the length of the crossing, they are connected with the use of an elastic connector that allows the tiles to be assembled in a modular fashion. The upper part of the rubber, which makes up the load-bearing surface, is carbonised in the aim of increasing traction for the tyres of road vehicles.

The type of construction shown in the drawing limits the impact of both types of transport, and ensures a more equal distribution of static and dynamic pressures. Lower pressures in the substrate (the ground) beneath the crossing are achieved, as well as limitation of the effects of dynamic loads transferred to the ground by rail and road traffic. The transmission of material vibration is limited, which is one of the causes of noise emitted into the environment during crossing by road and rail vehicles. The use of this type of construction does not require refurbishment of the rail lines during its construction, protects against penetration by water or contaminants, and is easy to maintenance and repair. The structure of the surface allows its assembly on rail lines that are curved, as well as on switches.



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(between rail station platforms)

The tiles of the crossing, made from concrete and covered with a layer of rubber, are mounted to the parts adjoining the tracks, whose layers of rubber have a moulded tread on the surface, preventing the accumulation of and damage from water and layers of ice. The prefabricated concrete tiles are produced using a technologically advanced moulding process. The effect of the technique, which is based on the removal of excess water from and air from the concrete, is the long life and high durability of the parts. These are confirmed by the results of testing.

The physical and mechanical properties of the tiles were tested by Heriot-Watt University in Edinburgh in Scotland. Testing was conducted on samples from unprotected tiles.
The fundamental results of the tests are presented below.
Resistance to wear         75 MPa
Resistance to bending     8.5 MPa
Absorption             4%
Resistance to freezing: no chipping or changes to durability after 150 cycles

The component adjacent to the rails is tightly adhered to the foot and neck of the rail along the entire width of the crossing. In the aim of limiting the possibility of shifting of the concrete plates in relation to one another, they are connected using threaded ties fastened in place with nuts. The use of this type of crossing construction does not require interference with the tracks during its construction and prevents the penetration of water and contaminants to the railway ballast. Because of the materials used, the crossing is easy to maintain, and because of the construction method, it is easy to disassemble and allows it to be installed on curved tracks.


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