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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Bautechnikarrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Article . 2014 . Peer-reviewed
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Einsatz und Anwendungsgrenzen von Schneckenbohrpfählen (Auger‐cast‐in‐place Piles – ACIP‐Piles)

Authors: René Schäfer; Thomas Belmann;

Einsatz und Anwendungsgrenzen von Schneckenbohrpfählen (Auger‐cast‐in‐place Piles – ACIP‐Piles)

Abstract

AbstractFür die Gründung einer Düngemittelanlage in Port Neal/Iowa wurden durch den Bauherrn Schneckenbohrpfähle (sog. ACIP‐Piles) als Gründungsentwurf vorgegeben. Angesichts der bis in große Tiefen unterhalb des Grundwassers anstehenden, sehr enggestuften, feinkörnigen Sande wurde die Ausführung im Hinblick auf DIN EN 1536 als kritisch eingestuft. Im Rahmen von umfangreichen Pfahlprobebelastungen konnte jedoch zunächst gezeigt werden, dass bei ausreichender Qualitätssicherung Schneckenbohrpfähle auch bei ungünstigen Baugrundverhältnissen ordnungsgemäß hergestellt und gute Tragfähigkeiten erzielt werden können. Im Rahmen der Ausführung der Bauwerkspfähle sind jedoch erhebliche Schäden aufgetreten, da die Bohrschnecke auf einer Tonschicht höherer Konsistenz aufsaß und Boden in nennenswertem Umfang gefördert wurde. Zurückzuführen sind die Schäden neben den ungünstigen geologischen Randbedingungen auf einen Wechsel des ausführenden Spezialtiefbauunternehmens, welches die nach DIN EN 1536 geforderte örtliche Erfahrung nicht über Probepfähle nachgewiesen hat. Zudem wurden im vorliegenden Fall die Schäden durch die eingesetzte Maschinentechnik des Drehbohrgeräts begünstigt, welche sich in den USA von der in Europa verwendeten Technik unterscheidet.Application and limitation of auger‐cast‐in‐place (ACIP‐) Piles – Experiences of an industrial project in Iowa/USAFor an industrial complex in Port Neal/Iowa, auger‐cast‐in‐place piles (ACIP‐Piles) haven been chosen for the foundation structure. With reference to the purely graded sand deposits, which have been encountered to greater depth in conjunction with a high ground water level, the installation of such piles has to be critically expected with reference to DIN EN 1536. However, the installation technique as well as acceptable pile capacities could be verified in the course of extensive pile testing. Nevertheless, considerable damages occured during the installation of the working piles. The damages can partly be attributed to an interlayered very stiff to hard cohesive soil layer at a depth of app. 20 m, which couldn't be smoothly drilled and which led to a soil extraction in the vicinity of the pile shaft. Moreover, a new drilling company was commissioned for the installation of the working piles, whose specific experience with the chosen pile type was not directly verified before. Finally, the damages were benefit by the chosen drilling technique.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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