Method of producing an intended breaking point in a tension memb

Details Method of producing an intended breaking point in a tension memb Method of producing an intended breaking point in a tension memb

1996-01-03

1998-01-13

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

148639, 148595, 225 2, 225 965, 4052595, 411 5, E02D 2902

Patent

active

057071810

ABSTRACT:
A method of producing an intended breaking point at a predetermined location of a tension member for a soil anchor of a strain-hardened steel or a steel which is not which is not in a thermodynamic equilibrium, for example, a wire or a steel wire strand, to enable removal of the free steel length after use by applying a tensile force which exceeds the working load. The predetermined breaking point is obtained by heating the tension member at a predetermined location in a controlled manner to a temperature at which the state of strain-hardening or the state of being not in a thermodynamic equilibrium is at least partially cancelled, wherein the predetermined breaking point has a breaking load which is equal to or smaller than the breaking load of the untreated tension member, but greater than the yield point of the untreated tension member.

REFERENCES:
patent: Re33901 (1992-04-01), Shinjo
patent: 1209250 (1916-12-01), Bellanger
patent: 2298528 (1942-10-01), De Causse
patent: 3406886 (1968-10-01), Wesel et al.
patent: 3541798 (1970-11-01), Schnabel
patent: 3958732 (1976-05-01), Aoyama et al.
patent: 4486240 (1984-12-01), Sciaky
patent: 4971493 (1990-11-01), Herbst et al.
patent: 5407303 (1995-04-01), Manns

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