e-mosty September 2018 Vessels and Equipment Used for Bridge Construction | Page 62

PLINTH AND TIE-BEAM CONSTRUCTION
After caisson installation, concrete plinths were cast on
top of the steel shafts and tie-beams between the steel
shafts were cast in-situ using self-compacting concrete,
poured using the tremie method.
Plinth and tie-beam construction included challenging
heavy lifting operations, which were accomplished using
the A-Frame mounted, Heavy Crane Barge “Koca Yusuf-II”
up to 980 Tons (MWS - Marine Warranty Surveyor) with
Test Load 1005 Tons.
.
Figure 27: Installation of the tie-beam (North Tower Foundation Location)
↖ Figure 28: Installation of the tie-beam
SCOUR PROTECTION
After completion of the caisson submerging operations,
anti-scour rock placement was facilitated by a floating
crane with fall pipe attachment. Scour protection
material was transported to the tower foundations by
split dump barges.
↑ Figure 29: Construction of the plinth
Figures 30 and 31: Scour protection for caisson
footing simultaneously with plinth construction
3/2018