Istanbul Metro, 4th Levent - Ayazağa Section Construction Work

Within the scope of Completion of Civil Works and Supply, Installation and Commissioning Works of Electro-Mechanical Systems of Seyrantepe Depot Area-Warehouse Connection Lines at 4. Levent Ayazağa Section of İstanbul Metro III. Phase; between shaft 6 km:22+405.338 (Line 1) and Hacıosman tail tunnels km:24+522.75 (Line 1), tunnel excavation-support works, final reinforced concrete lining, shaft manufacturing; (2,803.8 m A type tunnel, 709.42 m B1 type tunnel, 123.42 m B3 type tunnel, 847.3 m P type tunnel, 161.07 m special type tunnel, 359.46 m C type tunnel, 178. 38 m T type tunnel, 104.2 m construction shaft) of ITU Ayazağa Station pedestrian connection tunnel, Atatürk Oto Sanayi Station pedestrian connection tunnel, Seyrantepe pedestrian connection tunnels and excavation-supporting works of Darüşşafaka Station, Hacıosman Station and sub-station building of Atatürk Oto Sanayi Station were carried out.  The construction technique which has been used is excavation-supporting with Bored Tunnel – New Austrian Tunneling Method (NATM) and Construction of station with cut-cover tunnel method.

Location TÜRKİYE
Client Istanbul Metropolitan Municipality
Project Scope
  • 5,183 m metro tunnel (excavation Support with New Austrian Tunneling Method (NATM)
  • 2 metro station with cut-cover construction method

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