VIBREX - the system for cast-in-situ concrete drive piles

The VIBREX pile is a cast-in-situ concrete drive pile with an upright, slender shaft. It is available in different sizes with shank diameters of 34 cm to 61 cm and load-bearing capacities of up to 2800kN depending on the existing subsoil. The maximum possible pile length is 30m and the maximum possible inclination is 4:1.

An in-situ concrete drive pile is formed when a tube fitted with a base plate is driven into the ground. The cavity created as a result is filled with concrete until the pile is finished.

To manufacture a VIBREX pile, a thick-walled steel tube that is sealed with a watertight steel plate is driven into the ground using a pile driver. After reaching the required depth, the tube must be checked for dryness and the connection reinforcement must be inserted to the correct length before the whole length of the pile can be filled with concrete.

Immediately thereafter, the tube is detached from the subsoil by a vibrator and lifted from the ground. The vibration also ensures that the concrete is compressed and even the smallest cavities in the soil are closed. This leads to a very good interlocking of the pile and the subsoil. After the concrete hardens, the finished pile can be cut to its required height and the connection reinforcement can be exposed.

The basic equipment with leader and drive unit can be moved on tracks. To change the direction, the device is lifted from the ground, the moving mechanism is rotated in the new direction and the process is repeated after lowering it. The building site is thus barely damaged.

VIBREX pile	Type 1	Type 2	Type 3	Type 4	Type 5	Type 6	Type 7
Shank diameter	34 cm	38 cm	41 cm	46 cm	51 cm	56 cm	61 cm
Base plate diameter	38 cm	41 cm	45 cm	51 cm	56 cm	61 cm	66 cm
Pressure capability* (Service load)	30 m	30 m	30 m	30 m	30 m	30 m	30 m
Maximum pile length	4:1	4:1	4:1	4:1	4:1	4:1	4:1
Standard reinforcement B ST IV S Winding Ø 6 mm	5 Ø 14	5 Ø 14	5 Ø 14	7 Ø 14	8 Ø 14	9 Ø 14	10 Ø 14
max. load (depending on the load bearing capacity of the subsoil)	600 kN	1000 kN	1300 kN	1600 kN	2000 kN	2400 kN	3000 kN