e-mosty September 2018 Vessels and Equipment Used for Bridge Construction | Page 74

Panel by Panel Erection with Self-Climbing Crane:
The tower leg segments no.12 thru.22 were erected
panel by panel using a self-climbing crane – as pictured
below in Figures 11 – 13.
↙ ↓ Figures 11 and 12 : Panel by Panel Erection rendering and actual
↘
Figure 13 : Tower Panel Erection by Self Climbing Crane
CABLE ERECTION
A diagram of the cable erection equipment and
temporary access catwalks is shown in the figure below.
Catwalks are needed to support the main cable erection
equipment and provide safe access along the entire
length of the main cables during construction of the
bridge superstructure.
A main cable erection tramway hauling systems were
used to haul the main cable strands across the spans.
This comprised a driving winch, 36mm hauling rope
andtensioning device for each cable.
To construct the catwalk, initially a hauling rope was
reeled out on the sea bed from a barge named “Rising
Sun” traveling across the span as the pilot rope was
payed out into the sea.
During layin