A new double bypass road tunnel will soon connect the Sarıyer and Kilyos districts of Istanbul. At 6,875m (4.3mi) long, this extensive underground system will substantially reduce travel time for the area’s residents and local businesses as well as connecting the city’s financial center to major motorways and Istanbul’s airport.
Türkiye has a long history of seismic activity and devastating earthquakes.
Building infrastructure that can better withstand these events and facilitate aid when they occur is a high priority. The Sarıyer-Kilyos Highway Tunnel is one such project—once completed it will serve as an evacuation route in the event of an earthquake.
The twin tube tunnel project has been designed for both TBM excavation and New Austrian Tunneling Method (NATM also known as the Sequential Excavation Method).
Research has shown that steel fibers have an advantage over conventional steel rebar with it comes to the seismic performance of concrete linings.
Dramix® 4D 65/60BG steel fibers have been selected instead of traditional bars to reinforce the cast-in-place tunnel lining for the Sarıyer – Kilyos Highway Tunnel.
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