CCL Case Studies: Transport Projects
As HS2 is given the green light by the UK government, there's no better time to review the many transport-related projects that CCL has helped deliver. In this special case study roundup, we take a look at projects around the world that CCL has designed, constructed, repaired or strengthened. Let's dive in...
Post-tensioning
Cityringen Extension, Copenhagen Metro, Denmark
CCL supplied and installed its XM multistrand post-tensioning system for an elevated bridge at a station on the new Cityringen line of the Copenhagen Metro. The bridge consists of four sections, each 60 metres long. The Cityringen extension opened in 2019.
King Abdullah Financial District (KAFD) Station, Riyadh Metro, KSA
CCL provided the post-tensioning for the new King Abdullah Financial District (KAFD) station, one of the four primary stations of the new Riyadh Metro. The station, thought to be the biggest elevated transfer station in the world, was designed by Zaha Hadid Architects using a complex geometric façade designed to resemble sine waves.
The post-tensioned main beams which help support the metro railway and the steel structure of the station were designed and installed by CCL. Spanning an impressive 190 m, the beams support the inclined columns of the steel structure and are themselves supported by inclined columns. Construction was carried out in many phases due to the complexity of the structure and required very precise step analysis, also conducted by CCL.
Structural Bearing Design and Manufacture
Rural Bridge Project, Sri Lanka
CCL designed and supplied over 3000 bespoke elastomeric bridge bearings for the construction of over 200 bridges to improve Sri Lanka’s infrastructure and link rural communities to the rest of the country.
Although designing bespoke bearings for each of the structures, CCL rationalised the number of design variations across several different bridge conditions to simplify installation on this far-reaching and complex project.
Plymouth Road Bridge, Blackpool, UK
The Plymouth Road Bridge project involved the removal and replacement of the existing bridge superstructure comprising the bridge deck, bearings, bearing shelves and parapets. The structure was to be raised by approximately 800 mm in preparation for the future electrification of the PBN railway line.
CCL was appointed to advise on bearing suitability and design the most appropriate bearing solution. The number of bearing types was reduced by CCL from six to just two, resulting in a more cost-effective solution and a much simplified installation process.
Bond Street Station, London, UK
CCL designed and supplied bespoke mechanical bearings for the western ticket hall for Bond Street Station, part of the Crossrail development. The bearings were designed to fix the temporary floor levelled truss structure used during construction and to support the permanent concrete floor during top-down construction.
Repair and Strengthening
Paddington Bridge, London
CCL was engaged to undertake concrete repairs to Paddington Bridge, including repairs to the deck, piers, abutments and parapets which involved the removal of defective concrete using hydro-demolition and the reinstatement of new concrete.
The company was also responsible for the jacking of the bridge, removal and replacement of bearings and the refurbishment of the bearings that were not replaced.
Vastern Road Bridge, Reading
CCL was responsible for the back-span tie down of a new 1000 tonne bridge deck, measuring 40 metres long, 17 metres wide and just 650 mm deep, at Reading station. The deck replaced four existing single span bridges, widened the station’s entrance and made space for seven tracks to serve five new platforms. CCL also undertook pile cap strengthening beneath the deck before the tie down could be carried out.
Inspection
Rochester Old Bridge, Rochester
CCL was engaged to inspect this Victorian, bowstring arch style bridge in Rochester. The detailed inspection of the bridge bearings, waterproofing system and expansion joints required the team to utilise a safe rope access system. Operatives from CCL underwent specialist training for working in such a space restricted environment.
The investigative process involved the detailed inspection of areas of stress, corrosion and defective paint. CCL then delivered a comprehensive report detailing all future maintenance and monitoring recommendations.
To find out more about CCL and how we can potentially work together on any future projects, please download the brochure below:
Click to Download > CCL Structural Solutions