Bored pile walls

Application

Pile walls are used as construction pit walls in locations where vibrations and noise should be avoided. Using this technique, underground car parks and cellars can be constructed in densely populated areas without causing any significant nuisance to the surrounding area. Depending on the situation, pile walls, with the use of special tools on the auger, be constructed even with obstacles in the subsoil. In combination with a secondary wall, pile walls can also be used as fixed (cellar) walls. By constructing the pile wall along the edge of the future construction, it can also be used as a load-bearing element. By constructing the other foundation piles as bored screw piles, they can be made with the same or a second drillrig. This type of construction can also be used for deep excavations because of their large strength and stiffness, as a result of which there are fewer deformations than with traditional sheet piling. Pile walls can be used in all types of soil that occur in the Netherlands.

Ambient factors

• Must be constructed at least 0.5 metres from an adjacent structure.
• This clearance is needed for the equipment.
• Vibration-free and low-noise.
• Space utilisation can be easily organised.

Pros and Cons

• This low-noise and vibration-free system can be used to make a buildingpit wall or foundation element.
• It can be constructed a short distance from adjacent structures.
• No soil relaxation or soil tensioning with the cased option.
• Pile walls have an excellent strength to stiffness ratio.
• Soil must be removed.
• Final water-retaining properties cannot be guaranteed because of the many interconnections of the piles.

Applicated