Category: Special equipment
Services: Detailed Design
Period: June 2020 – ongoing
Client: Matter SAS
Luxemburg
Arch bridge Luxembourg – Bettembourg line (OA14)
Study and design of storage and painting booths for the construction of the arch joints.
The OA14 railway bridge on the Luxembourg-Bettembourg line is a suppressed-span arch railway bridge with a span of approximately 200m. The arch is of the reticular type with connecting crosspieces between the lower flanges. For the realization in a protected environment of the welding and the painting of the lower and upper arches, the diagonals and the crosspieces, the construction of welding cabins to be moved in each section of joint has been considered.
The cabins have an inverted U-shaped cross-section with a double-pitched roof and a reticular structure made of box-shaped sections.
The OA14 railway bridge on the Luxembourg-Bettembourg line is a suppressed-span arch railway bridge with a span of approximately 200m. The arch is of the reticular type with connecting crosspieces between the lower flanges. For the realization in a protected environment of the welding and the painting of the lower and upper arches, the diagonals and the crosspieces, the construction of welding cabins to be moved in each section of joint has been considered.
The cabins have an inverted U-shaped cross-section with a double-pitched roof and a reticular structure made of box-shaped sections.
The cabins are positioned on an adjustable frame structure attached by clamps and pins to the upper wing of the arch. The huts are connected to the viaduct by means of adjustable supports made with telescopic tubes that allow correct positioning on each working section. In a first phase, where only the lower arch and the diagonals resting on temporary piles remain, the joints of the lower arch and the crosspieces will be made. In a second phase, the upper arch will be installed and the joints of the upper arch and those between the diagonals and the upper arch will be completed; moreover.
The cabins are positioned on an adjustable frame structure attached by clamps and pins to the upper wing of the arch. The huts are connected to the viaduct by means of adjustable supports made with telescopic tubes that allow correct positioning on each working section. In a first phase, where only the lower arch and the diagonals resting on temporary piles remain, the joints of the lower arch and the crosspieces will be made. In a second phase, the upper arch will be installed and the joints of the upper arch and those between the diagonals and the upper arch will be completed; moreover.
The platforms are adjustable in height to adapt to the two working configurations on the lower and upper arch. Access to the shed is provided from below by means of a basket; access to the bow is authorized by adjustable telescopic platforms.
On all sides of the cabin there is a ribbed sheet covering with the function of protection against falls and atmospheric agents; only in the front part, occupied by the arch, a tendon closure will be performed.
The platforms are adjustable in height to adapt to the two working configurations on the lower and upper arch. Access to the shed is provided from below by means of a basket; access to the bow is authorized by adjustable telescopic platforms.
On all sides of the cabin there is a ribbed sheet covering with the function of protection against falls and atmospheric agents; only in the front part, occupied by the arch, a tendon closure will be performed.