Displacement piles

With the help of vibro hammer a steel pipe is advanced into the ground with the bottom of it being left in the ground. After the pipe reaches the required depth, a reinforcement cage is lowered into the pipe which is filled with concrete, afterwards using the vibro hammer the...


(LT) Spraudai – įlaidinės plastiko membranos

Sorry, this entry is only available in Lithuanian.


(LT) CFA grąžtai

Sorry, this entry is only available in Lithuanian.


(LT) Kranų nuoma

Sorry, this entry is only available in Lithuanian.


Drilling piles

To install these piles few different methods are applied. Our company uses KELLY and CFA methods for the drilling piles installation.

KELLY METHOD

Using this method for the piles installation the drilling machines are used, in which the so-called KELLY equipment is mounted, consisting of a Kelly bar and a winch. A Kelly bar is a telescopic equipment consisting of several (2-5) telescopic sections. Depending on the bar rotation direction the sections can unfold or contract. One end of the Kelly bar is fixed with a rope to the winch, and an operating tool – an auger or a ladle – is fixed to the other end.

Applying the Kelly method, the piles may be installed using protective pipes or without using them. It depends on the ground characteristics, where the piles are being installed.

Using this method, we install piles with the diameter not more than 800 mm, and the length – up to 25 metres.

ADVANTAGES:

  • Large pile diameter:
  • Deep piles;
  • Accurate cage layout.

DISADVANTAGES:

  • low production rate;
  • a site is soiled with the ground extracted.

 

CFA METHOD

Using this method for the piles, a hollow solid auger is drilled to reach the required depth, afterwards concrete is poured throughout the auger. The auger is extracted, and concrete fills the hollow cavity. After the auger having been extracted a steel cage is placed into concrete.

Using this method, we install piles with the diameter up to 750 mm, and the length – up to 14 metres.

ADVANTAGES:

  • high production rate;
  • additional protective pipes are not needed, for during the drilling process the bore walls are supported by the ground, which fills the auger;
  • for the piles installation, which diameter is up to 600 mm and depth up to 14 metres, easily transported drilling machines can be used.

DISADVANTAGES:

  • the concrete amount and its pressure have to be continually controlled, in order to avoid the hollow cavities;
  • the position of a steel cage is not easily controlled;
  • a site is soiled with the ground extracted.

Piling walls

Piling walls are installed out of steel or plastic planks, when the installation of the temporary or permanent wall is needed, for example, in order to protect the site from the ground water, landslides, etc. For the installation of the piling walls vibro hammers are used, which are mounted on...


Anchors

Anchors are installed in order to keep the bearing walls stable, in case the ground pressure exceeds the allowed loading of the bearing walls. Anchors are normally installed by the drilling of a steel anchor (a bar or a pipe) through the bearing wall at an angle and at a...


(LT) Atlikti darbai

Sorry, this entry is only available in Lithuanian.


Partners