Ground and rock anchoring utilising helical flight hollow screw-in anchor with grout extending beyond anchor, typically with reinforcing tie

摘要

An in situ ground anchor comprising an opened ended hollow shaft equipped with an exterior helical flight for screwing the shaft into the soil layer, a column of hardened grout cast within the anchor and extending beyond the leading end of the anchor into a rock layer and a tie extending through the anchor and into the column extending beyond the anchor.