VSL's innovations Dampers on test Penny's Bay in HK
VSL's innovations Dampers on test Penny's Bay in HK
VSL's innovations Dampers on test Penny's Bay in HK
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26<br />
TECH SHOW<br />
3<br />
Erect<strong>in</strong>g each deck<br />
<strong>in</strong> 3 stages<br />
Stages 1 and 2 <strong>in</strong>cluded the<br />
c<strong>on</strong>structi<strong>on</strong> of a full span, each<br />
made from10 to 12 segments<br />
weigh<strong>in</strong>g between 50 and 60 t<strong>on</strong>s and<br />
a quarter of the adjacent span, made<br />
with three segments match-cast<br />
aga<strong>in</strong>st the pier segments, built <strong>in</strong><br />
cantilever. Stage 3 comprised the<br />
clos<strong>in</strong>g of the last span. The pier<br />
segments were erected by crane and<br />
the gantry was subsequently<br />
launched over the pier segments.<br />
The segments of each span were<br />
assembled together and temporarily<br />
prestressed, prior to be c<strong>on</strong>nected to<br />
the pier segments with an <strong>in</strong>-situ<br />
stitch. When the c<strong>on</strong>crete of the<br />
stitches reached 20MPa, these<br />
assemblies where then<br />
pre-stressed for each stage <strong>in</strong><br />
two sequences of four tend<strong>on</strong>s each<br />
of 6-37 c<strong>on</strong>figurati<strong>on</strong>.<br />
N E W S N ° 1 • 2 0 0 4<br />
PENNY’S BAY CONTRACT 1
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