Ductile driven piles

Ductile driven piles (HLV piles) are deep foundation elements offering full soil displacement, high load-bearing capacity and general construction approval.

Glossary: Ductile driven piles

General Advantages Basics Variants Quality References
High-performance displacement pile (HLV)

Ductile driven piles
Full-displacement piles with general type approval

Ductile driven piles, also known as HLV piles (high-performance displacement piles), are precast driven piles designed for a variety of foundation applications. They can be used as deep foundation elements for various building and infrastructure projects.

As the soil is completely displaced, no conventional drill cuttings are produced during construction. The selection and dimensioning of the piles is carried out taking into account the respective subsoil conditions, load requirements and project specifications.

The pile system, comprising cast-iron pipes, has been granted a general type approval by the German Institute for Building Technology (DIBt).

HLV piles are used, amongst other things, for the foundations of small and medium-sized structures.

Examples of applications include:

  • Halls
  • Industrial buildings
  • Electricity and mobile phone masts
  • Pipelines

Technical brochure
Ductile driven piles (HLV piles)

Technische Broschuere HLV Pfahl
Technische Broschuere HLV Pfahl
PDF

Benefits / Features
Ductile driven piles

Ductile driven piles, also known as HLV piles (high-performance displacement piles), are precast driven piles designed for a variety of foundation applications. They can be used as deep foundation elements for various building and infrastructure projects.

As the soil is completely displaced, no conventional drill cuttings are produced during construction. The selection and dimensioning of the piles are carried out taking into account the respective subsoil conditions, load requirements and project specifications.

The pile system, comprising cast-iron pipes, has been granted a general type approval by the German Institute for Construction Technology (DIBt).

HLV piles are used, amongst other things, for the foundations of small and medium-sized structures.

Examples of applications include:

  • Halls
  • Industrial buildings
  • Electricity and mobile phone masts
  • Pipelines

Basics
Ductile driven piles

The design and manufacture of HLV piles comply with Eurocode 7 and DIN EN 12699, as well as the recommendations of the ‘Piles’ Working Group (EA-PfĂ€hle). The diameters of the cast iron pipes are 118 and 170 mm. Further details can be found in our approval Z-34.25-203 HLV pile system Stump, which you can download from our website. The loads and pipe diameters must be adapted to the respective ground conditions. Ductile driven piles: We would be happy to consult with you on this.

Der erste Rohrschuss wird, versehen mit einem Rammschuh oder einer Rammspitze, im bereits fertiggestellten Voraushub angesetzt und eingerammt. Der nĂ€chste Rohrschuss wird aufgenommen und in die konische Muffe des zuvor eingerammten Rohres eingesetzt. Durch den Rammvorgang entsteht eine starre, kraftschlĂŒssige Verbindung. Der Pfahl wird auf die Endtiefe eingerammt, die aufgrund des Eindringwiderstandes festgestellt wird. Der Überstand wird auf die geplante Höhe abgetrennt. Das ReststĂŒck wird, versehen mit einem neuen Rammschuh, sogleich als Anfangsrohr des nĂ€chsten Pfahles angesetzt. Daher fĂ€llt bei der Pfahlherstellung kein Verschnitt an. Der Pfahlkopf wird je nach Erfordernis der Lastabtragung mit einer Druckverteilungsplatte und/ oder einer Zugbewehrung ausgebildet.

Flexibel einsetzbar

Die geringe Masse der zu rammenden Pfahlrohre ermöglicht die Pfahlherstellung mit einem leichten, wendigen Hydraulikbagger mit hydraulischem Schnellschlaghammer. Daher können die Pfahlfundierungen auch bei sehr beengten und schwierigen PlatzverhĂ€ltnissen hergestellt werden. Dies ermöglicht die schonende, nahezu erschĂŒtterungsfreie Einbringung der PfĂ€hle in den Baugrund auch in unmittelbarer NĂ€he bestehender GebĂ€ude. Ein Pfahlachsabstand von ca. 40 cm vom Bestand kann eingehalten werden.

Variants
Ductile driven piles

Particularly in non-cohesive soils, annular grouting is required to increase the external bearing capacity. During driving, concrete grout is injected through the pile casing, filling the annular space via a larger-diameter driving shoe. This results not only in soil compaction but also in a strong interlocking bond with the subsoil. Particularly in sandy and gravelly soils, this method can achieve skin friction values of up to 200 kN/mÂČ.

Inclined piles can be manufactured with an inclination of up to 45 degrees, or up to 5 degrees in the case of jacketed piles.

Quality assurance
Ductile driven piles

To ensure quality during construction, the requirements of European and national standards must be observed. The design and manufacture of HLV piles are carried out in accordance with Eurocode 7 as well as DIN EN 12 699, our general type approval from the DIBt, and the recommendations of the ‘Piles’ Working Group (EA-PfĂ€hle). Self-monitoring and documentation of construction work are regulated in the manufacturing standards.

Ductile driven piles require a set of procedures individually coordinated with the specific project requirements.

We ensure high-quality execution through:

  • Individually coordinated procedural instructions
  • Compliance with the requirements of DIN EN 12 699, Eurocode 7 and EA-PfĂ€hle
  • Compliance with the requirements of the general type approval
  • Clear processes via our quality management system in accordance with DIN EN 9001:2015
  • Static or dynamic pile load testing
  • Vibration measurements

AusgewÀhlte Projekte
Ductile driven piles