98
Category 2: Civil Structures
2
Queensferry Crossing - Firth of Forth, Scotland
AP
Contact
Peter Walser
Address Heilbronner Straße 362
70469 Stuttgart, Germany
Website
Leonhardt
, Andrä und Partner consultancy was founded in 1939 by
the famous master builder Fritz Leonhardt. The consultancy focuses on
tunnels, buildings and challenging bridges in all design and construction
stages, from first brainstorming and feasibility studies through preliminary
and detailed design, construction engineering, site supervision, technical
expertise and independent checking.
CHP Constructions
specializes in providing structural detailing services
for reinforced concrete, steel and timber structures to other engineering
consultancies. See
for more information.
Owner
Transport Scotland
Architect
Transport Scotland, Jacobs / Arup
General Contractor
FCBC (HOCHTIEF / Dragados / American
Bridge / Morrison)
Engineering Office
Leonhardt Andrä und Partner / Rambøll / Grontmij
Construction Period 2011 - 2016
The Queensferry Crossing over the Firth of Forth near Edinburgh is the
largest bridge project in Northern Europe
currently under construction.
Including approach viaducts, the bridge has a length of 2,638 m.
Three
towers
up to 210 m high and two main spans of over 650 m provide
clearance for the two navigation channels and make it the world’s longest
three tower cable-stayed bridge. A unique and instantly recognisable
engineering innovation is the 146 m overlap of stay-cables at mid-span,
providing extra stiffness for the windy location and enabling the towers and
decks to be more slender than on a traditional design.
Allplan
has been used for the tender design and the reinforced concrete
detailing of the three towers and two tie-down piers. Unusually for a bridge of
this scale, a fully detailed 3D reinforcement model has been created. Despite
technical and design challenges resulting from the tapered towers and high
reinforcement ratios, especially at the power joint between main deck and
the central tower, the complete reinforcement detailing has been delivered
with precise dimensions and collision-free to the construction site on time.
The
smart design
with the central tower sitting on the conveniently
located Beamer Rock island and highly optimized construction allowed the
contracting consortium to bid for £790 million, a price £260 million below its
nearest competitor.
Leonhardt, Andrä und Partner AG
