Large bored piles
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Versatile solution for deep foundations and excavation stabilisation
Large bored piles are ideal as deep foundation elements and for securing excavations. They can be produced as individual piles, in pile groups or as an overlapping pile wall with a sealing function. Large bored piles are fully cased using the gripper or rotary drilling method and, if the ground conditions permit, are produced as so-called auger cast concrete piles using the SOB method.
Implementation
The soil is either conveyed discontinuously using the grab and rotary drilling method with simultaneous support of the borehole by a casing or, in special cases, by bentonite suspension, or continuously using an endless auger (SOB). Once the cavity has been created, the reinforcement is installed using the gripper and rotary drilling method and concreted using the contractor method. With the SOB method, concreting is carried out directly via a core barrel while the continuous flight auger is being pulled and the reinforcement is then installed in the fresh concrete column.
Examinations
- Integrity test (e.g. TNO, "low-strain method")
- Static pile testing
- Dynamic pile testing
Applications
- Deep foundation in the entire construction area
- Excavation support as an anchored or unanchored bored pile wall with overlapping, tangent or overlapping bored piles
- Boreholes for drilled girder shoring - steel girders with timber, prefabricated or shotcrete infills
Technical data
| Gripper and rotary drilling | ø 60 to 180 cm |
| Rotary drilling method with endless auger (SOB) | ø 40 to 120 cm |
| Devices | Crawler crane up to 120 tonnes, Rotary drilling rigs up to 100 tonnes |
Learn more about special foundation engineering processes
Anchors
Soil mixing method
Soil investigations
Ductile piles
Jet grouting method
Grouting
Micropiles
Soil nail walls & rock stabilisation
Diaphragm walls
Membrane walls
Special technology
Sheet-pile walls
Dewatering
Contact
for large bored piles
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