Rowed steel fiber with two ends anchored by circular rings

Abstract

The utility model discloses a row steel fiber with two ends anchored by circular rings, the middle part of the steel fiber is a straight section, the two ends of the straight section are respectively bent and wound to form a closed circular ring, and the circular rings at the two ends are symmetrically distributed; the steel wires and the steel fibers are bonded into a row through soluble glue. The utility model has the beneficial effects that the closed circular rings at the two ends of the straight section of the steel fiber can reduce the mutual lap joint between the steel fibers and increase the bonding and mechanical anchoring force between the steel fibers and a concrete matrix; by using the bonding glue, the mixing amount of the steel fibers in the concrete can be increased, the uniform distribution of the steel fibers in the concrete can be improved, and the possibility of caking of the steel fibers can be reduced; and the anchoring parts and the transition parts at the two ends of the steel fiber are arc-shaped and have no bending points, so that the damage to the steel fiber in the processing process is avoided, and the tensile strength of the steel fiber raw material (steel wire) is maintained.

Description

Technical Field

[0001] The utility model belongs to the field of construction engineering materials, and more specifically relates to a pair of rows of steel fibers anchored by circular rings at both ends. Background Art

[0002] Steel fiber concrete is widely used as an important new civil engineering material. The incorporation of steel fibers not only increases concrete strength, but also enhances its crack resistance and toughness, effectively improving concrete's brittleness. Currently, common steel wires and steel fibers have hooked ends, resulting in poor anchoring performance with concrete and limited toughness enhancement, impacting the safety and durability of concrete structures. Complex, irregularly shaped steel fibers with strong anchoring forces are prone to overlapping and clumping during concrete mixing. Using rows of steel fibers with complex, irregularly shaped ends glued together can reduce the possibility of clumping during mixing.

[0003] The existing patent document CN 214571577 U—"A Cold-drawn Steel Wire End-Anchored Row of Steel Fibers" discloses a steel fiber with hook-shaped ends. The cold-drawn steel wire end-anchored row of steel fibers includes a steel fiber body, and several steel fiber bodies are bonded into a row by an adhesive. The middle part of the steel fiber body is a base segment, and both ends of the base segment are provided with an end anchor structure. The end anchor structure includes a straight segment and a curved segment. The curved segment is a V-shaped structure. The curved segment is connected between the base segment and the straight segment, so that the straight segments and the base segment on both sides of the curved segment are on the same plane; the larger circumferential anchoring range formed by the curved hook increases the difficulty of pulling the steel fiber out of the concrete, increases the power consumption of the fiber pulling out, can effectively inhibit and slow down the formation and development of concrete cracks, improve the crack resistance of the concrete, and increase the toughness of the steel fiber concrete.

[0004] However:

[0005] 1. In this technical solution, both ends of the steel fiber are overlapped with the concrete matrix through line segments, and the anchoring force of the steel fiber is relatively weak.

[0006] 2. The formation of the V-shaped structure in the bending section will damage the steel fiber and reduce the tensile strength of the steel fiber itself. Utility Model Content

[0007] The technical problem to be solved by the utility model is to enhance the bonding and anchoring force between steel fibers and concrete on the premise of improving the dispersion of steel fibers, thereby improving the comprehensive performance of steel fiber concrete.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a row of steel fibers anchored by circular rings at both ends, the middle part of the steel fiber is a straight section, and the two ends of the straight section are bent and wound into a closed circular ring, each connected two steel fibers are bonded with glue, the cross-section of the steel fiber is a circular cross-section, and the steel fiber is made of steel wire.

[0009] The utility model discloses a pair of rows of steel fibers anchored by circular rings at both ends, wherein the glue is water-soluble glue.

[0010] The utility model discloses a pair of row steel fibers with circular rings anchored at both ends. The diameter of the steel fibers is 0.5-0.9 mm and the nominal length is 35-60 mm.

[0011] The utility model discloses a pair of row steel fibers with circular rings at both ends anchored. The length of the middle straight section of the steel fibers is 30-55 mm, and the circumferential radius of the circular rings at both ends is 2-3 mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The closed circular rings at both ends of the steel fiber advance from the line segment to form a surface. Compared with the overlap of the line segment, the anchoring force with the concrete matrix is ​​stronger.

[0014] 2. The circular anchoring parts and transition parts at both ends of the steel fiber are arc-shaped without bending points. Compared with the V-shaped bend, it prevents the damage to the steel fiber during the processing and avoids the reduction of the original tensile strength of the material in the process of converting the raw steel wire into steel fiber.

[0015] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of this specification:

[0017] Figure 1 A schematic diagram of the present utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Marked in the figure: 1, straight section; 2, circular ring. DETAILED DESCRIPTION

[0020] The following, with reference to the accompanying drawings, provides a further detailed description of the specific implementation methods of the present invention, such as the shape and structure of the various components involved, the relative positions and connection relationships between the various parts, the functions and working principles of the various parts, the manufacturing process and the operating methods, etc., through the description of the embodiments, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the present invention.

[0021] like Figure 1 and Figure 2 The illustrated embodiment shows a row of steel fibers anchored by circular rings at both ends. The middle portion of the steel fibers is a straight section 1, with each end of the straight section 1 being bent and wound around a closed circular ring 2. Each two connected steel fibers are bonded together using glue. The cross-section of the steel fibers is circular and the steel fibers are made of steel wire. The glue is water-soluble. The diameter of the steel fibers is 0.5-0.9 mm and the nominal length is 35-60 mm. The length of the middle straight section 1 of the steel fibers is 30-55 mm, and the radius of the circular rings 2 at both ends is 2-3 mm.

[0022] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A steel fiber row with circular rings at both ends, characterized in that: The middle part of the steel fiber is a straight section, and both ends of the straight section are bent and wound into a closed ring. The steel wires and steel fibers are bonded into rows by soluble glue.

2. The steel fiber array with circular rings at both ends anchored according to claim 1, characterized in that: The glue is water-soluble glue.

3. The steel fiber array with circular rings at both ends anchored according to claim 1, characterized in that: The steel fiber has a diameter of 0.5 to 0.9 mm and a nominal length of 35 to 60 mm.

4. The steel fiber array with circular rings at both ends anchored according to claim 1, characterized in that: The length of the middle straight section of the steel fiber is 30-55 mm, and the circumference radius of the circular rings at both ends is 2-3 mm.

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