File:Foundation pile scheme.svg
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[edit]DescriptionFoundation pile scheme.svg |
English: BUILDING A FOUNDATION PILE - The excavation is done by a boring machine. Various drilling tools can be used (1). The excavation is supported either by steel pipes or (as shown in this scheme) by a bentonite suspension. When the excavation has started bentonite suspension is continuously pumped in. The suspension supports the borehole and avoids destabilization by water inflow (2). After reaching the requested depth the prepared reinforcement cage is put in (3). Concreting the pile using the contractor process while pumping off the upcoming bentonite. Contractor means that the pipe the concrete is filled in with always reaches into the concrete already filled in so it can’t mix with the bentonite (4).
Deutsch: HERSTELLUNG EINES BOHRPFAHLS - Für die Herstellung der Bohrung wird zum Beispiel ein Mäkler mit einem Schneckenbohrer verwendet (1). Das Bohrloch wird entweder durch Stahlrohre oder (wie hier gezeigt) eine Stützflüssigkeit aus Bentonit gesichert. Während des Bohrvorgangs wird ständig Bentonit-Suspension nachgefüllt. Die Suspension nimmt den Erddruck der Bohrwände auf und verhindert schädlichen Wasserzutritt (2). Nach dem Erreichen der Endteufe wird der vorgefertigte Bewehrungskorb in einem Stück eingehoben (3). Anschließend wird der Pfahl im so genannten Contractor-Verfahren betoniert. Dabei reicht das Einfüllrohr für den Beton stets in den bereits eingefüllten Frischbeton, so dass keine Vermischung mit Bentonit eintreten kann (4). Während des Betonierens wird die verdrängte Suspension abgesaugt und recycelt. |
Date | |
Source | Own work |
Author | 5gon12eder |
SVG development InfoField | This diagram was created with Inkscape…important. |
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current | 13:40, 16 March 2008 | 4,205 × 1,642 (467 KB) | 5gon12eder (talk | contribs) | {{Information |Description='''EN''' BUILDING A FOUNDATION PILE 1) The excavation is done by a boring machine. Various drilling tools can be used. The excavation is supported either by steel pipes or (as shown in this scheme) by a bentonite suspension. 2) |
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