Construction—EMEA—Portugal—Slope Stabilizations
DYWIDAG Strand Anchors permit the Stabilization of a Coastal Road
on Madeira
In 2010, severe storms caused landslides on a connecting road
on the southwest coast of the island of Madeira. The road therefore
had to be comprehensively stabilized over a 90m long section
between the towns of Moledos and Calheta.
The technical solution to this problem was
a comprehensive slope stabilization using
a curtain of 1m diameter concrete piles.
The retaining wall was anchored using
1-3 levels of DYWIDAG Anchors. At the
eastern end of the pile wall, an additional
reinforced concrete retaining wall with a
maximum height of 12m was built.
The Contractor asked DSI to produce and
supply 75 permanent DYWIDAG Strand
Anchors. The permanent anchors have
5 strands each and were supplied complete
with anchor heads, 4 load cells and one
hand-held measuring device in order to
permit the monitoring of the forces acting
on the anchors.
The anchors were produced in DSC’s factory
in Madrid and shipped to Madeira. DSI fulfilled
all technical requirements in close cooperation
with the Owner. The ground underneath
the road was regraded, which significantly
decreased the deposits on top of the unstable
ground. The roadway improvements were
successfully completed in January 2016.
Owner
Governo Regional da Região
Autónoma da Madeira, Portugal
General Contractor
Joint Venture, consisting of
AFA - AFAVIAS Engenharia e
Construções, S.A., and ANDRADE
GUTIERREZ – Europa, África, Ásia,
S.A., both Portugal
Engineering
CENORGEO – Engenharia Geotécnica
Lda., Portugal
DSI Unit
DYWIDAG Sistemas Constructivos S.A.,
Portugal
DSC Scope
Production, supply, technical support
DYWIDAG Products
75 permanent DYWIDAG Strand Anchors
with 5 strands each, 4 load cells,
1 hand-held measuring device
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