Auger drilling technology
The auger drilling technique , also known as auger concrete ( SOB ), is a method of bored pile foundation . With pile and bored pile foundations, the loads from supporting structures can be transferred to deeper, load-bearing soil layers. Pile foundations using auger boring technology are particularly low in vibration and noise compared to conventional driving and bored pile technology and are therefore also suitable for densely built-up inner-city areas or in the vicinity of vibration-sensitive production plants. Since auger piles are uncased - i.e. without pipes that have to be inserted into the boreholes beforehand - are produced directly on the construction site, unplanned changes can be implemented relatively easily compared to cased drilling systems.
The production of an auger pile usually takes place in four phases:
- Phase I : The hollow endless auger is screwed into the ground without vibration.
- Phase II : The drilling is carried out and permanently monitored. The drilling depth, and thus the length of the bored pile, can still be varied without any problems in this phase.
- Phase III : After reaching the target depth, concrete is pumped into the borehole under high pressure through the hollow auger. The pumped-in concrete pushes the auger upwards without turning.
- Phase IV : After removing the cuttings piled up on the surface, the connecting reinforcement is vibrated into the still fresh concrete.
As a newer variant, steel fiber concrete can also be pumped in, which eliminates the need to vibrate the reinforcement and guarantees a uniform pile quality.
With this manufacturing process, it is also possible to create anchored pile walls.
Individual evidence
- ↑ Archived copy ( Memento of the original from May 14, 2009 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Bernhard Wietek : Stahlfaserbeton ( Memento of the original of September 13, 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Publisher: Vieweg + Teubner 2nd edition 2010.
