Technical details
Client
TCDD
Dates

2017

Missions
Preliminary Design, Final Design
Location
İstanbul, Türkiye
Activity
Railways

Connecting Gebze to Sabiha Gökçen Airport

This project involved compiling and evaluating previous studies, determining the project alignment, and preparing geological maps along the route.

Key tasks

  • Conducting dedicated drillings and laboratory tests
  • Preparing geological and geotechnical profiles
  • Specifying geotechnical design parameters
  • Producing comprehensive reports

Slope analyses and designs were carried out, along with the design and typical drawings for all structures within the alignment. Detailed excavation support classes were developed for tunnels using NATM/TBM methods, supported by corresponding excavation and final lining drawings.

Solution proposals and slope support designs for tunnel portals were also prepared, and a detailed bill of quantities was established for tendering purposes.

Key Figures

  • Double tunnel single-track
  • 18.4km total length
  • 160km/h design speed
  • 1 TBM Tunnel (double tube – 8,4 km)
  • 1 NATM Tunnel (single tube 2.45 km)
  • 2 cut & cover
  • 1 station
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Filyos Port and Filyos Industrial Zone Railway Logistics Improvement Project, Zonguldak Toprakkale – Bahçe Tunnels – Adana, Osmaniye Esenboğa – KuyubaşiAirport Metro Connection – Ankara Kovanlık HEPP Tunnel Design – Giresun Gebze-Darıca Metro – Kocaeli, Türkiye Çapa & CerrahpaşaIstanbul University – İstanbul
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