Anchor rod assembly secured by hardenable mass

Details Anchor rod assembly secured by hardenable mass Anchor rod assembly secured by hardenable mass

1987-06-23

1988-05-31

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

52704, 405261, E21D 2002

Patent

active

047477270

ABSTRACT:
An anchor rod assembly includes an axially elongated anchor rod to be secured in a borehole by a hardenable mass inserted into the borehole around the anchor rod. The anchor rod is divided by slots into a plurality of circumferentially spaced axially extending segments extending from the leading end of the anchor rod. The anchor rod has an axially extending central bore located radially inwardly of the segments. A filler piece is inserted into the central bore and the slots between the segments. The filler piece closes off the slots between the segments at the outer circumferential surface of the anchor rod. Due to the filler piece, the hardenable mass cannot flow into the slots between the segments and the central bore. As a result, the segments follow movement of the borehole wall during any widening of the borehole because of cracked development, and the anchor rod is retained in the borehole. A radially inwardly formed constriction in the outer circumferential surface of the segments adjacent the trailing end of the anchor rod improves deformability of the segments.

REFERENCES:
patent: 3298144 (1967-01-01), Fischer
patent: 4092814 (1978-06-01), Kern
patent: 4167359 (1979-09-01), Beveridge
patent: 4518290 (1985-05-01), Frichmann et al.
patent: 4664555 (1987-05-01), Herbst
patent: 4679966 (1987-07-01), Yacisin

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