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Definition:
Pile screwed without vibration with double side repression and was in the shape of propeller on all the height, without vertical transport of ground
Properties:
installation of the reinforcement on all the height before concreting
tilted piles possible (up to 1/5)
the section of the pile is determined by the diameter of the propeller and the diameter of the barrel. The diameter of the propeller determines the geological capacity of bearing pressure, the diameter of the barrel determines the organic capacity of bearing pressure. The diameter of the current barrel of 310mm with 610mm is spaced 50mm. The diameter of the propeller of 460mm with 810mm.
without vertical transport of ground, even with the point (side repression).
begun again horizontal efforts by an additional reinforcing cage at the head
it can be necessary of préforer the hard layers (>20MPa).
capacity of bearing pressure until 2000kN
Scope of application:
in the environment sensitive to the sound: <85dBA with 7m of the machine
in the environment sensitive to the vibrations. The pile is installed under the combined effort of screwing and push.
without important drainage of ground
almost all profile them ground Belgians
especially in tertiary clays
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Definition:
piles of smooth repression of ground screwed. Head of drilling optimized for drilled in grounds more compact.
Characteristics:
was smooth
diameters 31cm, 36cm, 41cm, 43cm, 46cm, 51cm, 56cm and 61cm
placement of the reinforcements before possible concreting starting from the diameter 43cm. amature at the head after concreting.
Scope of application:
low sound level
without vibrations
without drainage of grounds or very limited
feasible in the pluspart of the osus-ground, included the layer of sand fairly compact
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Definition:
Pile carried out by screwing of metal tubes sealed at the base by a lost point widened, assembled by welding and filled with concrete. One can injected cement grout by the point during screwing for facility screwing and to increase friction
Characteristics:
repression of ground
diameters of was: 273mm, 323mm, 406mm in 457mm. diameter of the point until 670mm
possibility of injection of cement grout
loads until 3500kN
slope up to 1/3 longitudinal and 1/5 transverse
level of concreting to be chosen
Scope of application:
execution of foundations under limited height or workspace reduced, without the least vibration
foundation in aggressive ground or dasn ground with water current
foundation in water
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Definition:
"Pressurized Concrete Screw crushes", pile carried out using a continuous spiral around a tube of 15cm of diameter, concreted using a concrete pump under pressure.
Characteristics:
the concreting under pressure and the large couple of the machines avoid the risk of relieving of the ground (pile CFA traditional)
without vibrations and low sound level
possibility of crossing hard layers (gravel or sand qc>15MPa)
diameters starting from 250mm until 1200mm
quality control per electronic system of monitoring (Lutz)
Scope of application:
to cross hard layers
pseudo walls tangent
like alternative of the drilled piles of large diameter
drainage of grounds after drilling (considerable quantities)
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