BOSPHORUS BRIDGE TOWER REINFORCEMENT

In 2014, Nunteknik undertook the part of Bosphorus Bridge’s 40th Year Maintenance and Reinforcement Project. In the scope of this project, Nunteknik handled the following works:

  • Latitudinal and longitudinal reinforcement of bridge tower legs

  • Repairment of orthotropic cracks on the bridge deck

  • Installation of four seismic viscose dampers on the areas where deck and tower legs are approaching each other

For reinforcement works, more than 100 ton IPE500 profiles were used per tower leg. These profiles were erected within the tower legs, which are 5x7m wide. Towers were reinforced longitudinally from +3 to +27 elevation. 

 

Latitudinal reinforcements were done in five different elevations from +42,5 to +149. For erection on +149 elevation, materials were lifted by crane inside the tower, and mountaineers screwed countersunk bolts from outside tower legs; 200 pcs of M22x120 bolts were screwed on each tower legs.

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