Moving structures on rails is a well-proven technology. Frames and bearing structures can be built next to their future location and then slid into open spaces stabilised by pilings and auxiliary bridges in a short period of time. The exact sliding equipment used depends on the size, geometry and weight of the structure.
In this construction process, the bearing structure is built at the side of the rails or road next to its final position. It is constructed on a slide-in rail or falsework. While it is built, rail and road traffic can be maintained. Traffic disturbance is thus reduced to a minimum.
Depending on the track or road section, sliding-in can be carried out while traffic remains uninterrupted thanks to high-speed section auxiliary bridges and temporary prefabricated bridges, the so-called ‘Hürter-bridges’ etc. When sliding-in takes place under single-track sections or secondary lines, traffic can be interrupted for a short period on a weekend while rail traffic is replaced by a bus service or road traffic is diverted via a bypass.
This construction method has been used successfully on several occasions for bridges over brooks and smaller rivers.
The structure is built next to its future location in a building pit closed by sheet piling. Then, the existing bearing structure is removed, the sheet pilings are extended, the slide-in track is built and the open frame structure is slid in. This only requires a short interruption in traffic.
This well-proven process also allows sliding-in of the construction during operation or during a short traffic interruption.
Sliding-in on rails Braunau
Work period: Juli 2019
Width: 6,00 m
Height: 2,90 m
component 1 approximate 260t
component 2 approximate 400 t
Sliding-in on rails Hieflau
Work period: Summer 2021
Sliding-in length: 13,5 m
Weight: 900 t
Building the structure at the side allows for higher quality.
The short construction time significantly reduces the potential risk for the construction workers on site.
This unique construction method can be applied virtually anywhere (rail, road etc.) and irrespective of soil properties. Our company has been using this technology successfully on countless construction sites in Austria and abroad since 1984.
The major advantage of this method is in keeping traffic interruptions to a minimum which significantly reduces construction costs.