Description
Within the high-speed European Atlantic Railway Axis, this 500 m long, 14.4 m wide and 9.9 m high cut-and-cover tunnel is part of the Baños triangle, a railway juncture of 4 lines between Valladolid, Palencia and Burgos.
ULMA Solution
ULMA proposed a profitable project from the first step on with the appropriate technical solution and reusable material, thus reducing supply expenses, as well as erection and construction time.
Despite of the clayey ground conditions, the solution met the deadline marked through the detailed planning of material supply and erection. The Technical Department of ULMA designed two light form carriers for the moving of a large formwork area with the auxiliary means available on the building site. The rolling systems enabled the construction of the tunnel section in stretches of 12.5 m without changing the configuration of the form carrier. After the technical study, ULMA considered to be the best solution to start from the central part of the tunnel. The two form carriers moved from the central part towards opposite ends to build the vault while erecting the formwork for the side walls. The accomplishment of works in a synchronous manner contributed to a considerable saving of time for each stretch. With the same product, ENKOFORM, the curved geometries of the vault and the side walls were formed.
Once again, health and safety of workers have been a priority for ULMA. The working platforms with safety handrails and ladders with protection ensured a high level of safety.
