Tension tie member

Details Tension tie member Tension tie member

1985-04-30

1987-01-06

Novosad, Stephen J.

Bridges

Suspension

Cables and cable clamps

14 21, 52230, E01D 1100

Patent

active

046335404

ABSTRACT:
A tie member includes at least one tension element, such as a steel wire or strand, enclosed within a tubular sheathing. An anchoring unit is located at each end of the tie member for transmitting the tension force to a part of a structure. Each anchoring unit includes an anchor plate with at least one conically shaped bore so that a tension element can be secured in the borehole by a multi-part annular wedge. To provide additional corrosion protection and improve fatigue strength in the anchorage, the tension element is enclosed within a coating of a synthetic resin for its entire length. The inside surface of the wedge is shaped between the ends with a series of coarse or rough teeth with the tips rounded off. When the wedge grips a tension element the synthetic resin material is displaced by the teeth, however, the resin material continues to cover the surface of the tension element not contacted by the teeth so that oxygen is prevented from communicating with the areas where the wedge and tension element are in contact whereby friction corrosion cannot take place.

REFERENCES:
patent: 1524939 (1925-02-01), Makowski
patent: 2099950 (1937-11-01), Whitehead et al.
patent: 3596330 (1971-08-01), Scott et al.
patent: 3833706 (1974-09-01), Edwards
patent: 3967421 (1976-07-01), Dufossez
patent: 4157602 (1979-06-01), Pennell
patent: 4449855 (1984-05-01), Langwadt
patent: 4473915 (1984-10-01), Finsterwalder
patent: 4557007 (1985-12-01), Daiguji et al.

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