DYWIDAG Strand Anchors for High Speed Train Routes in Spain

Following a large scale extension of Spain’s high speed train network, Acciona, one of the largest construction companies in Spain, was awarded a contract for the extension of the Sotiello-Campomanes section. This 4.3km long section is financed by European funds and forms part of the new connection between Madrid and the province of Asturias in the north of Spain.

The region is located in a mountainous area that once was an impassable barrier between Spain’s center and the province of Asturias. Ever since the 19th century, the construction of a border crossing had been a main focus, and in 1884, the first train route leading over the Pajares Pass was opened. Ever since, the route has remained practically unchanged with its many curves, inclinations and ramps.

The new section is being constructed as a single track along the first, 2.6km long section and as a double track on a length of 1.7km. In addition to two tunnels, the route also includes seven viaducts. Construction work between Sotiello and Campomanes was successfully undertaken between July 2009 and May 2010.

Before construction work started, landslide activities, which were more prevalent during rainy periods, were detected in the Sotiello- Campomanes section. In order to prevent future landslides in the new section, a total of 19 wells were built to drain the affected area.

In addition, a pile wall was constructed in the excavation pit for stabilization. Subsequently, the pile wall was secured by four rows of anchors. DSC supplied 310 Type 10x0.6" Permanent DYWIDAG Strand Anchors in lengths of up to 52m with a total length of approx. 10,000m that were installed at a spacing of 1.25m.