JPH10169198A - Fixture for wire material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture fixing a wire material onto a pier, a column and other columnar bodies under the state, in which tensile force is applied to the filament material. SOLUTION: The fixture has a base plate and a wedge. The base plate 26 consists of a plate material, and a rear is brought into contact with a columnar body 24. A groove 32 is formed to the surface of the base plate. The groove 32 is formed so that the sectional area of the groove 32 cut by a virtual surface crossed at right angles with the surface is reduced gradually towards the other end from one end of the groove. The wedge 28 is driven into the groove 32 from one end, and fixes the wire material 22 in cooperation with the groove 32, and is composed of two wedge small pieces 40, 42 formed so as to hold the wire material 22 extending over a certain length in the axial direction. These wedge small pieces 40, 42 are formed so that the outer circumferential surfaces of the wedge small pieces are adapted to the groove 32 and the wire material 22 is given resistance force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for a wire material, and more particularly, to a wire material such as a PC steel wire wound on an elevated railway bridge, a three-dimensional road, a bridge pier, or a column such as a pillar of a building. The present invention relates to a fixing device for fixing a linear material to a column when reinforcing the column.

[0002]

2. Description of the Related Art As shown in FIG. 4, there is a fixing device including a retaining plate 10, a sleeve 11 having a conical tapered through hole, and a wedge 12 formed of two half-cylindrical pieces. For example, when prestress is introduced into columns or beams of a reinforced concrete building to be newly constructed, the retaining plate 10 is retained on the end of the sheath 13 and the PC steel material penetrating the sheath 13 and the retaining plate 10. The end of 14 can be sandwiched between two semi-cylindrical pieces of wedge 12 and used to drive the end of PC steel 14 by driving wedge 12 into sleeve 11.

[0003]

A reinforcing method of winding a wire rope around the outer periphery of a reinforced concrete column and integrating the wire rope with the column using a mortar or other covering material (Japanese Patent Publication No. 56-33542). When carrying out, or using a device that moves a bobbin around which a reinforcing wire is wound along a ring arranged around a column, thereby winding the reinforcing wire around the column (Japanese Patent Publication No. 7-112585). If
It is necessary to fix a winding start end and a winding end end of a wire material such as a wire rope or a reinforcing wire to a pillar, but the fixing tool cannot cope with this need.

[0004] The present invention provides a fixing device for fixing a filament to a pier, a column or another column while applying a tensile force to the filament.

[0005]

SUMMARY OF THE INVENTION The present invention is a fixing device for fixing a filament material to a columnar body while applying a tensile force to the filament material, comprising a substrate and a wedge. The substrate is made of a plate material, and the back surface of the substrate is in contact with the column. A groove is provided on the surface of the substrate opposite to the back surface, and a plurality of holes penetrating from the front surface to the back surface are formed in the substrate at positions outside the groove. The groove is formed such that a cross-sectional area of the groove cut along an imaginary plane substantially orthogonal to the axis of the surface and the groove gradually decreases from one end of the groove toward the other end. . On the other hand, the wedge is driven into the groove from the one end of the groove, and fixes the linear material in conjunction with the groove, and the linear material extends over a certain length in the axial direction of the linear material. It consists of at least two wedge pieces formed to be sandwiched. These wedge pieces are formed so that the outer peripheral surface of the wedge piece fits into the groove when the wire material is sandwiched, and the wire material is driven into the groove from the one end of the groove. It is formed so as to provide resistance.

[0006]

[Operation and Effect] When the filament material is to be wound around the columnar body, the fixing device substrate is attached in advance to the winding start position. The end of the filament is sandwiched between at least two wedge pieces of the wedge and the wedge is driven into the groove of the substrate. The outer peripheral surface of the wedge piece is fitted into the groove by the wedge driving, and the wire material is tightened. As a result, resistance to the detachment of the filament material is provided. The end of winding of the filament material is also fixed with a fixing device and fixed.

[0007] Bolts are passed through a plurality of holes in the substrate, and the bolts are implanted into the columnar body to fix the substrate. In order to firmly fix the wedge by the groove of the substrate, when the filament material is to be wound around the columnar end, Can be securely and easily fixed to the columnar body. Also, where the substrate is made of plate material,
Since a thin plate material can be used as long as the groove can be formed, a thin fixing device can be provided as a whole. As a result, the size of the fixing device can be reduced, and as a result, the handling becomes easier.
Workability can be improved.

[0008] Since the fixing device gives a large resistance to the filament by a wedge action, the filament can be fixed even when a tensile force is applied to the filament. Therefore, it is possible to introduce prestress into the filament material.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In addition to wire ropes and soft fibers, a PC steel material can be used when a wire material is wound by a machine. As the wire material, for example, a steel wire of three or more 2.9 mm can be used, and a tensile force of about 500 kgf is applied.
The fixing device is, for example, formed with a steel plate having a length of about 60 mm along the linear material, a length of about 70 mm in a direction orthogonal to this length, and a thickness of about 20 mm, and has a groove having a depth of about 10 mm. Provide on the surface. The substrate is preferably a flat plate when the mounting surface of the column is a flat surface, and a curved plate when the mounting surface is a curved surface like a cylinder, so that the substrate can be in contact with the column in a wide range.
When the mounting surface of the columnar body is a curved surface, a part of the columnar body may be cut into a flat state and a flat substrate may be used. The groove is preferably a dovetail groove having a substantially trapezoidal cross-sectional shape, and is formed so that the cross-sectional area gradually decreases from one end of the groove to the other end. A wedge that is driven into the groove can be formed by two wedge pieces, the outer peripheral surface of which is adapted to the groove, i.e., has substantially the same cross-sectional shape as the groove, from one end to the other. Taper gradually. The mating surface of the two wedge pieces is provided with a recess slightly smaller than the outer diameter of the filament.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 3 showing a use state of a fixing device 20, a wire member 2 is applied with a tensile force applied to a wire member 22.
FIG. 1 is used to fix the fixing member 2 to the columnar body 24.
And a substrate 26 and a wedge 28 as shown in FIG.

The substrate 26 is made of a steel plate material, and has a back surface 30 in contact with the columnar body 24 and a surface 31 on the opposite side, as shown in FIG. Further, a plurality of holes 33, in the illustrated embodiment, two holes 33 penetrating from the front surface 31 to the rear surface 30 are formed at positions outside the grooves 32. The groove 32 is formed as a dovetail groove, that is, a groove in which the size of the groove on the surface 31 is smaller than the size of the groove on the bottom surface 34. Further, the groove 32 is formed on the surface 3
1 and the cross-sectional area of the groove 32 cut along an imaginary plane substantially orthogonal to the axis of the groove 32 extends from one end to the other end of the groove, and from the right end 35 to the left end 36 in the illustrated embodiment. It gradually becomes smaller, and the groove surface extends from the right end 35 to the left end 36
It is formed so as to continue smoothly.

In the embodiment shown, the groove 32 has a right end surface 35.
The surface 31 side is 16 mm and the bottom surface 34 side is 20 mm, but the left end surface 36 is 10 mm on the surface 31 side and 16 mm on the bottom surface 34 side, and the depth is constant 10 mm over the entire length of the groove 32.

In the illustrated embodiment, only one groove 32 is provided, but two grooves may be provided instead. When the wire is crossed over the column, for example, start winding the wire from the lower end of the column, wind it up to the upper end of the column, then turn it upside down and intersect with the one already wound to the lower end. In the case where the wire is continuously wound in such a manner, the winding start end and the winding end need to be fixed at the lower end of the columnar body. At this time, another groove in which the direction of the groove is opposite to that of the groove 32, that is, FIG.
Referring to FIG. 7, a groove may be provided in parallel with the groove 32 such that the cross-sectional area of the groove gradually decreases from the left end 36 to the right end 35.

The wedge 28 extends from one end of the groove 32 to the groove 3.
2 and fixed to the wire in combination with the groove 32, and is composed of at least two wedge pieces formed so as to sandwich the wire over a certain length in the axial direction of the wire. In the embodiment shown, the wedge 28 consists of two wedge pieces 40,42, which are wedge pieces 40,42.
Is the outer peripheral surface 41, 4 of the wedge piece when the wire is sandwiched
The groove 3 is formed so as to fit into the groove 32 and to provide a resistance to the filament when the groove 32 is driven into the groove 32 from one end of the groove 32. Each wedge piece is formed of a steel material, and in the illustrated embodiment, tapers from the right end 44 to the left end 45. A groove-like recess 46 is provided on the mating surface of each wedge piece 40, 42 with the other wedge piece along the axial direction thereof. The size of the gap formed by the two recesses 46 when the two wedge pieces 40 and 42 are put together is set to be slightly smaller than the thickness of the wire material to be wound around the columnar body.

When the filament material 22 is to be wound around the column 24, a bolt 50 is passed through a hole formed in the substrate 26 and the bolt 50 is fixed to the column 24, as shown in FIG. 24. At this time, the direction of the substrate 26 is determined in consideration of the direction in which the wire member 22 is to be wound. In the embodiment shown, the filament material 22 is wound in the left direction. The end of the linear material 22 is sandwiched between two wedge pieces 40 and 42 of the wedge 28, and the wedge 28 is
Into the groove 32. At this time, two wedge pieces 4
An equal force is applied to 0,42 so that the two wedge pieces enter groove 32 by substantially the same amount. Wedge 28
When the required length is inserted into the groove 32, the wire member 22 is given a sufficient resistance.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of a substrate used for a fixing device for a linear material according to the present invention, wherein FIG. 1A is a front view, FIG. 1B is a right side view, and FIG. .

FIGS. 2A and 2B show an embodiment of a wedge used in a fixing device for a linear material according to the present invention, wherein FIG. 2A is a front view, FIG. 2B is a right side view, and FIG. .

FIG. 3 is a front view illustrating a use state of the fixing device.

FIG. 4 is an exploded perspective view of a conventional fixing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Fixing tool 22 Striation material 24 Columnar body 26 Substrate 28 Wedge 30 Back surface 31 Front surface 32 Groove 33 Hole 40, 42 Wedge small piece 46 Depression

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomoyoshi Chujo 1-2-11-1 Nishishinjuku, Shinjuku-ku, Tokyo Japan Steel String Concrete Co., Ltd.

Claims (1)

[Claims] 1. A fixing device for fixing a filament material to a column while applying a tensile force to the filament, wherein the fixing device is a substrate made of a plate material having a rear surface in contact with the column. Has a groove provided on the surface on the opposite side, and a plurality of holes penetrated from the front surface to the back surface in the substrate at a position outside the groove, the groove is the front surface and the A substrate formed such that a cross-sectional area of the groove cut along an imaginary plane substantially orthogonal to an axis of the groove gradually decreases from one end of the groove toward the other end; and At least two wedge pieces which are driven into the groove from the end, and which fix the wire in combination with the groove, and which are formed so as to sandwich the wire over a certain length in the axial direction of the wire; Consisting of
These wedge pieces are formed so that the outer peripheral surface of the wedge piece fits into the groove when the wire material is sandwiched, and the wire material is driven into the groove from the one end of the groove. A fixing device for a linear material, comprising a wedge formed to impart resistance.