DEVICE FOR MAKING CAST-IN-SITU PILES USING A CONTINUOUS HOLLOW AUGER

THE INVENTION RELATES TO CIVIL ENGINEERING WORK. IT CONCERNS A DEVICE FOR FORMING CAST-IN-SITU PILES, THE AUGER OF WHICH CONSISTS OF A CONVENTIONAL LOWER PART (1) AND AN UPPER PART COMPRISING A HOLLOW INNER ELEMENT (4) AND A REMOVABLE OUTER ELEMENT (10) IN THE FORM OF AN AUGER HAVING A LONGITUDINAL DISCONTINUITY WHICH ENABLES IT TO BE FITTED OVER THE HOLLOW INNER ELEMENT. THE HOLLOW INNER ELEMENT MAY EXTEND, FIXEDLY, AS AN ELONGATION OF THE LOWER PART OF THE AUGER OR BE MOUNTED TELESCOPICALLY IN THE LATTER. APPLICATION TO MAKING CAST PILES OF A GREAT LENGTH WITH MACHINERY OF REDUCED DIMENSIONS. (FIG. 2)