Railway Systems
Client : Istanbul Municipality / Gülermak-Doğus JV
Country : Istanbul / Turkey
Project Period : 2006-2008
Cut&Cover Tunnels:İstanbul İkitelli-Olimpiyat Köyü cut & cover tunnels about 2000 meter lenght 20-30 meter buried have been designed. Tunnels are box type and width and height varies according to track line and soil profile. As soil profile changes from top to down, the excavation and bracing type varies. Fill layer design and excavated with slopped open trench. Limestone or stiff layer braced with soil nailing and anchored piles. There are eight structurally different types of tunnels including double floored type. Tunnels divided into 36 meter lenght blocks with expansion joints to avoid thermal expansion forces.Olimpiyat Stadium Station:Station designed for 90 sec. Peak hour train interval with 70,000 passenger/hour/dir. 3 storey, completely buried station is about 300 meter long and 50 meter wide. Station has been designed as reinforced concrete. Platform is under the ticket hole. The roof is wave formed steel girders standing on the ticket hole beams. The platform level is standing on wall fixed to foundation. The interior and ticket hall designed with columns, ribbed beams and slab on the top.Olimpiyat Viaduct:Olimpiyat Viaduct is 450 meter long, 10 meter wide, with prestressed precast concrete beams and cast in place slab composite superstructure on hollow box concrete pier max 38 meter high founded on shallow and bored pile foundations.
