The first phase of the transformation and expansion project of Madrid’s Chamartín station has successfully concluded with two notable actions: the commissioning of the Sol tunnel and the completion of the taxi slab concreting.
Sol tunnel
Last Friday, December 22nd, the Sol tunnel was put back into service, thus recovering the railway traffic along the section between Chamartín and Nuevos Ministerios.
Azvi led the structural reinforcement works that have been carried out in Chamartín, under the urban square and the vestibule, on tracks 1 to 4 and platforms 1 to 3. These consist of:
- The placement of metal profiles on the existing prefabricated slab of PI beams, which form the current station, for subsequent sealing and injection.
- The reinforcement of the existing porticoes with vertical and horizontal anchors, as well as the placement of carbon fibres.
- The application of vermiculite throughout the structure to protect against fire and an anti-corrosion inhibitor to preserve the gantries.
Ispalvía, Grupo Azvi’s railway electrification subsidiary, was in charge of replacing the catenary of tracks 1 to 4 under the station.
Taxi Slab
Azvi has also successfully completed the concreting of the taxi slab, an outstanding project that forms part of the extension to the east of the station’s urban square.
This project was a highly complex technical challenge, which was carried out in 24 hour shifts, seven days a week over a continuous 1 year, 7 month period , and included the following work units:
- 198 piles, with 441 tonnes of steel and 890 m3 of concrete.
- 35 pile caps, with 418 tonnes of steel and 2,330 m3 of concrete.
- 38 piers, comprising 164 tonnes of steel and 750 m3 of concrete.
- 6 lightened slabs, with 835 m3 of Porexpan, 435 t of steel and 2,830 m3 of concrete.
- 3 compression slabs, with 60 t of steel and 250 m3 of concrete.
- 930 m of prefabricated beams.
- 1,700 m of micropiles with diameters of 225 and 300 mm.
- 140 tonnes of reinforcing steel for portal frames, including pile caps, columns and box girders.
- 18 tonnes of temporary bolted reinforcing steel in trusses.
We continue to move towards sustainable mobility and intermodality in Madrid.
The project is being carried out in consortium with COMSA Corporación, Vías y Construcciones S.A. and GRUPO SANJOSE.
Photos: Grupo Azvi
