ANCHOR FOR A ROD OF GLASS-PLASTIC REINFORCING BARS Russian patent published in 1996 - IPC

FIELD: civil engineering, production of prestressed reinforced structures. SUBSTANCE: anchor for a rod of glass-plastic reinforcing bar contains hollow cylinder 1 with end diaphragm 2 on the side of pulling device, and diaphragm 3 on the side of rod end. The diaphragms are provided with openings with roundings 4 for glass-plastic reinforcing bars 5. Two openings are originated in the middle of anchor length in diametral plane. Round opening is originated for screw portion of pull member. Oval opening 8 is originated for screw pull member with eye made as one part. Composite material is filled in oval opening 8. End diaphragm 2, of thickness being not less than two diameters of the rods being secured, is provided with cylindrical passage 11 for rod 5 imposing coaxial alignment on the rod and anchor. End diaphragms 2, 3 with roundings 4 for rod 5 are screwed in cylinder 1. Threaded pull member with eye made as one part is put into the opening. The eye is turned through 90 and rod 5 passing through openings in the eye is passed through the hollow cylinder. Then a nut is screwed on threaded part of the pull member, and by screwing on the nut axis of rod 5 is curved to the design value. Such composite material as epoxy compound is filled into opening 8. After compound hardening the nut in screwed out, and extended part of the pull member is cut off. Roundings of openings of the end diaphragms and rounded support on eye surface contribute to decreasing stress concentration in rod 5 in points of bending and resting on. EFFECT: increased technological efficiency. 5 dwg