Yavuz Sultan Selim Bridge Third Bosphorus Bridge (BB3)

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Yavuz Sultan Selim Bridge Third Bosphorus Bridge (BB3) North of Istanbul across the Bosphorus near the Black Sea (TR) General calculations of the steel structure, construction methods studies, dynamic studies (wind, earthquake, trains) Owner Designers Cost of the works Studies KGM - Turkish ministry of trans- Michel Virlogeux and € 700 M excl. vat. 2012 - 2016 port - Highways department Jean-François Kleïn Execution 2013 - 2016 OA In the central span, the deck is in steel with an orthotropic plate (total steel weight : 45 000 tons). In the side spans, the deck is in concrete. The preliminary design is the result of a competition won by Michel Virlogeux (France) and Jean-François Klein (Switzer- land). The final design is made by T-Ingénierie (Switzerland) and Greisch (Belgium) on behalf of the joint venture Içtas and Astaldi S.P.a. Mission : - global calculations of the structure during its service life; - proposals for construction methods; - design of the steel deck in the main span; Suspended bridge with a main span length of 1 408 m and a - dynamic studies necessary to verify the behaviour of the glo- total length of 2 240 m located at the north of Istanbul near the bal structure: Black Sea. > under the wind (during the service life and the construc- tionstages - verifications made with numerical simulations Like the Brooklyn bridge, the main span is partially suspended and by tests in wind tunnel laboratory), at the pylons by stiffening cables and at the main cables with > under the earthquake and/or the passages of trains. vertical hangers. The top of the pylons is located at 320 m, they are composed of 2 concrete shafts (77 000 tons). The deck is 5,50 m high and 58 m wide with 4 road lanes in each direction, 2 railways tracks and 2 sidewalks. 4678 - 2007.

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