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Driven cast in-situ piles

Driven cast in-situ piles piles are produced by driving a casing with a detachable base plate into the soil. Depending on the application, a rebar cage is suspended inside the tube after the casing has been driven to the desired depth. Next, a measured quantity of concrete is poured or pumped into the casing. Following this, the casing is withdrawn by means of driving or vibrating. Where applicable, a short rebar cage can also be pressed into the concrete afterwards.

Application

The piles are used mainly as foundation for offices and high-rise buildings. Depending on the casing diameter and the reinforcement used, the piles are capable of absorbing high compression loads.

Ambient factors

The installation of driven cast in-situ piles piles comes with noise and vibration nuisance. The casing and hammer can be fitted with noise-reducing facilities. Because of the use of a steel casing, the installation of the piles is not sensitive to layered soil. It is important to pay attention to the centre-to-centre distance of the piles to prevent compaction and uplift due to pile driving.

Pros and Cons

  • Changing local conditions can be coped with by varying the type and length of the reinforcement during the execution.
  • Depending on the reinforcement and the casing diameter, the piles are capable of absorbing high compression loads.
  • In case of soil layers with high waterpressure, problems may arise that could compromise the quality of the piles and special attention to he concrete mixture may be neccessary.
  • As with all driven piles, installation comes with some extent of noise and vibrations.

Applicated

Name of project

Client

Groningen, Eemshaven mastfundaties

Elja Beton- en Waterbouw

Rotterdam-Maasvlakte, Quay walls Maasvlakte 2

Comb. Van Hattum en Blankevoort / BAM Civiel

Krimpen aan den |Ijssel, Hollandia hall 11

Van Hattum en Blankevoort

Den Haag, Noise barriers A12

Holland Scherm

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