HS2 team starts on UK’s first double composite viaduct – video

Aaron Morby 1 year ago
Share

The first of 38 French-made steel beams that will be used to construct the UK’s first ‘double composite’ structure viaduct have arrived at HS2’s Wendover Dean site in Buckinghamshire.

Manufactured by Eiffage Metal, 560 miles away from the Buckinghamshire site at a specialist facility in France, each of the 25m long steel beams are being transported on the back of extra-long lorries with special traffic management teams.

Engineers have come up with the innovative design to create a lower carbon structure than traditional designs.

Instead of using solid pre-stressed concrete beams to form the bridge spans, the viaduct will use two steel beams sandwiched between two layers of reinforced concrete to create a lightweight and super strong hollow span.

The double composite approach is stronger allowing project engineers to save an estimated 7,433 tonnes of embodied carbon through the use of less material.

This is the equivalent of someone taking 20,500 return flights from London to Edinburgh.

Once the rest of the 40 tonnes beams have completed their long journey to site, the beams will be welded together to form the 450m-long viaduct.

As well as manufacturing the steel, Eiffage Metal will also be leading on the installation of the beams

Over the summer, HS2 main works contractor, EKFB – a team made up of Eiffage, Kier, Ferrovial Construction and BAM Nuttall – will weld the beams together for the first of five 90m long spans.

Pre-cast concrete sections will then be added to form slender box-like structures. These will then be slowly pushed out from the north abutment onto each of the concrete piers later this year.

Wendover Dean viaduct piers under construction ahead of the first bridge deck launch

EKFB worked with their design partner, ASC  – a joint venture between Arcadis, Setec and COWI – and specialist architects Moxon on the ‘double composite’ approach which was inspired by structures on the French high speed TGV network.

Senior EKFB engineer James Collings said: ‘There’s been a tremendous amount of effort put in to get to this stage of construction, including an extensive earthworks and utilities programme and beam delivery is a key milestone for the team.

“As momentum gathers pace and we continue our preparations for the bridge deck launch, it’s great to see these steels on site, ready for the next phase of build. We’re starting to see the viaduct emerge from its foundations and start to take shape above ground.”

Latest news

Family confirm death of Des O’Rourke

Deputy chair and co-founder of Laing O'Rourke dies aged 75
4 hours ago

Striking new-look for Canary Wharf HSBC tower

Large chunks of upper floorplate to be removed in major overhaul
10 hours ago

Kier halves debt to £115m after strong trading year

Order book up 7% to £10.8bn with 85% of work secured for year ahead
11 hours ago

Developer blasts “unfair” power charges on huge Liverpool site

Romal Capital unhappy about site power hook-up costs
11 hours ago

Regal London to start Wembley 1000-bed student scheme

Backer found to deliver £400m twin tower student scheme
10 hours ago

Breyer Group bags £163m housing repair deal

Major repair and maintenance win from Kingston Council
11 hours ago

VolkerFitzpatrick lands Piccadilly Line upgrade deal

Contractor to work on Cockfosters depot
11 hours ago

26 face fight to renew spots on £1bn NEPO civils deal

Next generation framework to start in March 2025
1 day ago

Go-ahead for £170m King’s Cross life sciences office project

Innovative arched design to carry landmark building over railway tunnels
1 day ago

Mitie buys power contractor ESM for £8.5m

Building FM firm strengthens high voltage contracting offer
1 day ago

New vision unveiled for £5bn Liverpool Waters

More housing included in central docks area after Labour £55m funding boost
2 days ago

String of contract wins sees turnover surge 25% at Mace

Construction division sees revenue leap to £1.73bn
1 day ago

Morgan Sindall wins £32m Walsall waste centre

Contract will transform former metal factory site
1 day ago

Kier wins £30m Greenwich teaching block

London South East Colleges plans to spend £47m on Greenwich Campus redevelopment
2 days ago

Blenheim House Construction applies for administration

Surrey contractor employs around 80 staff generating £87m turnover
2 days ago

GMI chief jumps to Henry Boot Construction

Lee Powell will replace Tony Shaw as MD when he leaves at the end of 2024
2 days ago

Avant Homes makes £109m loss

House builder reveals huge loss just days after entering Crest Nicholson bid race
3 days ago

Greggs unveils plans for giant distribution centre

Bakery giant to build 311,551 sq ft logistics centre in Kettering
2 days ago

£330m south east London 1,250 homes scheme approved

Outline planning for New Belvedere development near the Thames
2 days ago

Green light for Birmingham 1,200-bed student scheme

Cambrian Wharf project will rise to 14 and 35 storeys
2 days ago

Welsh fit-out specialist files administration notice

£30m turnover employee-owned Paramount D&B lodges court notice
3 days ago

Skanska signs £105m London Millbank office rebuild

Original 1915 building facade will be dismantled and rebuilt
3 days ago

Historic facade contractor goes into administration

Administrator seeking buyer for Charles Henshaw & Sons
6 days ago

Three-year HS2 station box excavation completed

Enough clay to fill 300 Olympic sized swimming pools removed from Old Oak Common site
3 days ago

BAM starts £88m Fife passivhaus school job

1,800-pupil school will be built near Rosyth Docks
3 days ago

Torsion appoints new Chief Operating Officer

David Worsley promoted as leadership team shuffled at Leeds based firm
3 days ago

Tilbury Douglas site manager saves schoolboy’s life

Site manager carries collapsed schoolboy to resuscitation unit he helped build
6 days ago

Extra HS2 payment sees SCS contract jump to £4.24bn

Skanska Costain Strabag JV additional payments rise to £650m after third handout
3 days ago

Plans lodged for 3,300-home Salford tower cluster

£1bn Regent Park scheme includes UK's third tallest building at 70 storeys
7 days ago

Domis founder Lee McCarren steps down

Fellow director Kingsley Thornton takes helm as co-founder retires
7 days ago

Contractor services