CIVILS BROCHURE

Lifting Central Bridge Spans
CASE STUDY
Olympic Park Transformation
Project, UK
OVERVIEW: As part of the Olympic Park
transformation, ALE completed the first bridge and
portal removal for this project.
SERVICES REQUIRED: The Gottwald AK912-1 fitted
with a 77m Maxi Boom and 400t Maxi Lift Ballast
removed the T12 bridge, which was the main link
between the Stratford coach park and drop off
point into the Olympic Park.
The bridge and portals were removed on three
consecutive days. ALE engineered a solution to
allow the portals, which were erected in three
sections, to be removed as one piece using the
AK912-1.
TILTING OF
BRIDGE ARCHES
CASE STUDY
Tilting of arches for
the viaduct over the
Tera River, Spain.
OVERVIEW: ALE has completed the
tilting of two steel semi-arches, P2 and
P3, for the viaduct over the Tera River
in Zamora, Spain.
SERVICES REQUIRED: P2, which formed
part of the bridge’s central deck section,
weighed 303t and measured 84m in
length. P3 weighed 272t and measured
81m in length. In order to perform the
tilting, two hydraulic units of 500t each
were used per semi-arch, along with
a pair of auxiliary telescopic jacks to
start the operation and to break the
initial arches’ balance.
Four double effect jacks, of 300t
and 150mm stroke, were installed at
each swivel base of the two semi-arches.
This was carried out to set the
longitudinal movements of the arches in
order to carry out the final adjustment.
Together, we are Smarter, Safer, Stronger
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