Manufacturing method of basalt fiber reinforcement tensioning anchorage device

Abstract

The invention relates to a basalt fiber rib tensioning anchorage device and a manufacturing method thereof. The anchorage device comprises a basalt fiber rib, wherein the end part of the basalt fiber rib is provided with a thickened part; the external peripheral surface of the thickened part is provided with a plurality of regular semi-spherical bulges at the surface of the thickened part of the basalt fiber rib; the external section of the thickened part is provided with an umbrella-shaped end socket; the umbrella-shaped end socket is protruded towards a direction away from the basalt fiber rib; the direction, facing towards the basalt fiber rib, of the umbrella-shaped end socket is concave; the thickened part and the umbrella-shaped end socket are positioned in a steel anchor ring; the part, which is adjacent to the middle of the basalt fiber rib, of an inner hole of the steel anchor ring is shaped like an inner conical surface; the inner conical surface is provided with a plurality of regular semi-spherical steel anchor ring inner conical surface bulges; an inner hole, away from the basalt fiber rib, of the steel anchor ring is round and is provided with front end inner threads; expanded epoxy resin mortar which is solidified after being cast is arranged between the steel anchor ring and the thickened part and umbrella-shaped end socket of the basalt fiber rib. The basalt fiber rib tensioning anchorage device has the advantages that an existing steel bar tensioning apparatus can be utilized for tensioning and anchorage is reliable.

Description

technical field [0001] The invention belongs to the technical field of applying inorganic non-metallic fiber materials to bridge construction, and in particular relates to a manufacturing method of a basalt fiber tendon tensioning and anchoring device. Background technique [0002] Basalt fiber is a new type of fiber material, which is an inorganic non-metallic fiber. It is drawn from natural basalt rocks through drawing bushings in a high-temperature molten state. Compared with other fiber materials, basalt fiber products are resistant to high temperature, acid and alkali. Due to its good characteristics, domestic and foreign scholars have carried out extensive research, and have developed products such as basalt fiber bars, cloth, and plates. Due to the particularity of its material, the existing steel bar tensioning and anchoring devices cannot be used to generate prestress, which limits the popularization and application of basalt fiber bars in prestressed structures. Ne...

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Problems solved by technology

Due to the particularity of its material, the existing steel bar tensioning and anchoring devices cannot be used to generate prestress, which limits the popularization and application of basalt fiber bars in prestressed structures. New anchor structures and devices have been developed, and basalt fiber bars are used in existing It has always been a difficult problem in the bridge engineering industry to stretch and anchor reliably with steel tensioning equipment, and to meet the fatigue load requirements of bridge structures.

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