E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
85/2
E21D 21/00 (2006.01) E21D 20/02 (2006.01)
Patent
CA 1298497
ABSTRACT OF THE DISCLOSURE To secure roadways and wall surfaces of open cuts and tunnels, a rock anchor assembly is inserted into and secured within a borehole in a receiving material. The rock anchor assembly is made up of an axially elongated tension member laterally enclosed in part by an axially elongated sheathing tube so that the tension member projects outwardly from the opposite ends of the sheathing tube. In the insertion direc- tion, the leading end of the sheathing tube is secured in tension-resistant locked engagement with the tension member. Initially, a hardenable adhesive material is injected into a borehole and then the assembled tension member and sheathing tube are inserted into the adhesive material so that the un- sheathed end of the tension member is anchored in the base of the borehole. The trailing end of the sheathing tube has a flange which bears against a anchor plate in contact with the surface of the receiving material in which the borehole is formed. An anchor nut is secured on the tension member and presses the trailing end of the sheathing tube against the anchor plate and the anchor plate against the receiving mate- rial. Accordingly, the leading end of the tension member and the anchor plate can be used in common by both the tension member and the sheathing tube for anchoring purposes with the sheathing tube anchored at both of its ends.
564252
Bartsch Rudiger
Finsterwalder Klemens
Bartsch Rudiger
Dyckerhoff & Widmann Aktiengesellschaft
Fetherstonhaugh & Co.
Finsterwalder Klemens
LandOfFree
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