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Archtec: Bridge ad Tunnel
Strengthening |
 Cintec
world wide recognizes and respects the feelings of local communities
in respect to what they regard as Heritage or Historic buildings and
structures whether or not the buildings/structures are formally
designated as such. To this end Cintec works to the guidelines of
the Secretary of the Interior's Standards for Historic
rehabilitations, the principles of the Venice Charter of 1964 and
the Burra Charter of 1979, to both of which the USA is a signature.
ARChTEC Offers an optimum level of
strengthening while causing minimal change to the appearance of the
bridge. The system also offers long-term durability, cost
effectiveness and a minimal disruption to traffic. The reinforcement
is provided by CINTEC and comprises stainless steel bars surrounded
by an expandable mesh fabric sleeve. These structural anchors are
embedded into diamond drilled holes tangential to the arch and
contained within the thickness of the barrel. |
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Test Results: |
 The
TRL Test: A graphical comparison between the
TRL unstrengthened arch and the
ARCHTEC reinforced arch. |
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Netted: Ireland |
Bridging a busy single-track railway
line, a rating of 10t was assessed for this single 8.6m (28 ft.)
span, masonry structure.
Strengthening to a rating of 40t was required. Twenty-six 3m
reinforcement anchors were installed to achieve this new load
capacity. The holes are made with non-percussive diamond drills
causing very little vibration, however in order to minimize the risk
of debris falling onto the track, 'fortrac' netting was fixed to the
underside of the bridge during the installation process.
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Archtec in Australia: |
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The "Red Bridge" across the Elizabeth
River at Campbell Town in Tasmania is the oldest surviving brick
arch bridge in Australia. It
consists of three segmental arch spans of 7.6 metres (25 feet) and
was built by convict labour between 1836 and 1838 using red clay
sandstone for the piers, abutments and cappings. The Tasmanian
Department of Infrastructure, Energy and Resources which controls
the bridge, required a contractor to take responsibility for the
design and construction of rehabilitation and strengthening works
which would restore the original structural integrity of the bridge
and strengthen it to take modern heavy vehicles, which are presently
up to 62.5 tonnes on 9 axles in the "B-Double" configuration. Part
of the "wish list" also required strengthening to the new SM1600
loading, which allows for future increases and has loads in excess
of 36 tonnes on a 3-axle group. Analysis by Gifford and Partners has
shown that strengthening to the required SM1600 loading is possible. |
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