CONTRACK PBP
CONTRACK PBP (pol. płyty betonowe przejazdowe) – prefabricated dedicated tram crossings (long – several meters long, double, curved) installed under suspended overhead lines, integrating the reinforced concrete crossing surface with the track system using a specialized polyurethane material for continuous, flexible rail fixing.
CONTRACK PBP prefabricated elements are dedicated for a specific crossing – their minimum length is 6 meters.
CONTRACK PBP prefabricated elements are based on reinforced concrete slabs manufactured with the target dimensions and shapes according to the design and adapted to the local track and road system. Monolithic structures manufactured in a workshop environment streamline the logistics, construction and maintenance processes.
customized prefabrication of crossings – reducing development time to 48–72 h;
obtaining uniform pavement along the entire length of the crossing and connection with the prefabricated section of the plain line with an inter-system insert;
laying slabs under overhead electric lines – using the PWP gantry system;
rapid replacement of a worn-out track section without compromising the reinforced concrete slab structure.
Most importantly, the construction technology of reinforced concrete slabs and the rail ducting placed in them allows for trouble-free removal of the worn-out steel track system structure and its replacement with a new one, without damaging the structure of the slabs.
Fully customized production of the prefabricated crossing allows to precisely design its shape, adapting as much as possible to the local road and track layout, as well as to equip it with the trackside systems required by the customer, including power supply installations (axle counters, lubricators, etc.).
For unusual track-road crossing arrangements, we use a reinforced concrete mix and individually designed reinforcement, taking into account the local characteristics. This allows to obtain the appropriate initial quality and durability of the prefabricated element, which, combined with the capability of replacing all elements embedded in the concrete slab at any stage of operation, allows for many years of use, exerting virtually no influence on the users of the crossing.
CONTRACK PBP technology covers dedicated crossings: long, in a specific layout (e.g. cant), usually located in key locations for both tram and vehicle traffic. Location at such spots means significant negative impact exerted by any repairs and upgrades on both traffic participants and tram passengers. Our prefabrication, logistics, rapid installation and repair technology works best in such places.
A key advantage of CONTRACK PBP prefabricated elements is the associated logistics system. PWP gantries that KZN Bieżanów Group operates are capable of accurately and safely stacking these multi-ton, oversized prefabricated elements. Importantly, the gantry design allows for working under overhead lines. The two-way carts included in the system allow loaded gantries to travel both on the track (rail wheels) and on other types of surface (road, ballast, etc.).