FOUNDATIONS
31
CONSTRUCTION EUROPE
SEPTEMBER 2014
Equipment from two specialist Groundforce
divisions was brought in to help with the
installation of a new horizontal boring
machine within NAMRC’s existing facility at
Waverley Technology Park in Sheffield. The
new machine is believed to be the largest of
its kind in a research facility in Europe, and is
capable of manoeuvring work-pieces of up to
100 tonnes in the chuck.
The bases required to support this massive
machinewere constructed ina large excavation
using more than 1,200m
3
of concrete and 100
tonnes of steel reinforcement.
The concrete foundations are supported by
78 auger-bored concrete piles, each 600mm
in diameter and spaced at 2m centres. These
were drilled from the underside of the existing
floor slab level before work started to excavate
the surrounding material.
Groundforce Shorco supplied the support
system, which comprised the company’s Mega
and Maxi braces with 900 Series braces of
varying lengths. Groundforce’s HY6 trench
sheets were used to line the excavation while
Piletec supplied a MS4 EMV piling hammer to
install them along with a Taets pile breaker to
cut down the concrete piles to the required
length.
ROTARY DRILL
InGermany, Liebherr has seen its newLB44-510
rotary drilling rig used on the construction of a
particle accelerator in Darmstadt.
Two LB 44-510 rotary drilling rigs are being
used on the construction of the international
particle accelerator FAIR (Facility for Antiproton
& Ion Research). The drilling rigs are there
to stabilise the subsurface with cast-in-place
drilled piles. The job will see 1,400 piles,
measuring between 40m and 62m, set in the
ground. FAIR will begin operating in 2018.
The latest development in Liebherr’s range
of deep foundation products, the LB 44-510
rotary drilling rig offers a torque of 510kNm.
In kelly drilling applications, it is configured
for drilling diameters of up to 3m and depths
of up to 92m. The drilling rig weighs some 170
tonnes and is powered by a V8 diesel engine
offering 505kW and complying with the Stage
IIIB emissions standard.
Italian manufacturer Soilmec launched three
new drilling rigs earlier this year, all designed
to meet new emission standards.
The SR-45 and SR-75 hydraulic drilling rigs
are designed for large diameter drilling of
cased or uncased bore piles, CFA piles, cased
augured piles, displacement piles and Turbojet
piles. The two rig types feature a re-design of
the mast, rotary, kelly and parallelogram. This
helps with the forward weight balance of the
machine, providing enhanced stability, greater
crowd and extraction force, and increased
depth capability.
The largest of the new Soilmec rigs, the new
The Groundforce teams working on
the Nuclear Advanced Manufacturing
Research Centre foundations have created
a concrete foundation supported by 78
auger-bored concrete piles
Tensar International provided its TriAx
multi-directional geogrid product for the
construction of 24km of access road for
the Keadby wind farm site
Soilmec’s new SR75 hydraulic drilling rig
working on a job site in Turkey
November 25–28
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