Completion Date: August 2016

 

Yavuz Sultan Selim Bridge - Istanbul, Istanbul, Turkey
T engineering intl

The third Bosphorus bridge (Yavuz Sultan Selim Bridge) is considered as the future of transportation and commerce for Turkey, linking Europe and Asia.

With a main span of 1’408 m, the bridge is the world longest span for railway bridges, carrying 8 lanes of motorway and 2 lanes of railway on a single level deck.

The bridge is the first modern application of an hybrid cable system, a combination between a suspension and a cable stayed bridge. The governing reason to develop this concept was to make it possible to break the world record of combined road/railway spans with a very slender deck, and not with a classical double level truss deck. It was therefore possible to satisfy the clear wish of the authorities to respect the architecture of the two existing Bosphorus bridge, in spite of the 1’408 m main span.

The bridge concept is therefore called high rigidity suspension bridge due to the extreme high stiffness provided by its conceptual design, able to resist very high wind loading and all seismic actions with a subtle efficiency.

The requirements insisted on an extremely short period of design and construction of 36 months. Such an extreme constraint had to be considered right from the beginning of the studies and the conceptual design did integrate the method statements for the construction as a key parameter.

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