JPH09324376A - Tensile material using continuous fiber - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a tension member used for a structure that can be easily connected by using a material such as carbon fiber which is lightweight and has excellent rust resistance and therefore has excellent durability. A tensile member for applying a tensile force to a portion, which is obtained by winding continuous continuous fiber around an end member having an arc shape at the end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tensile member for a truss member used in the field of construction and civil engineering, a wire portion such as a suspension bridge, a chain, a tensile member used as a belt conveyor, and the like. The present invention relates to a tensile material that is light in weight and has excellent rust resistance instead of steel, and has excellent durability, and that can be easily connected.

[0002]

2. Description of the Related Art Conventionally, steel materials such as reinforcing bars have been used as tensile members in structures such as bridges. Although the steel material is relatively easy to process, it has a problem in that it is heavy and rusts and thus lacks in durability. On the other hand, in recent years, it has been proposed to use a rod obtained by fixing a fiber having a high elastic modulus such as carbon fiber in a rod shape or a rope shape with a resin, as a tensile material instead of a reinforcing bar or a steel frame.

[0003]

However, such a rod-shaped or rope-shaped fiber-reinforced resin rod cannot be welded like steel material, and the strength of the cut portion is extremely lowered, so that the metal object is processed by screwing or the like. It was also difficult to connect via the rod, and there was a problem that it was not easy to connect the rods. Therefore, there is a problem in that it is difficult to connect the rods to each other and transmit the tensile force, particularly when a long tensile member is required.

Therefore, an object of the present invention is to provide a tension member for a structure which can be easily connected by using a material such as carbon fiber which is lightweight and excellent in durability because it has rust resistance. is there.

[0005]

Means for Solving the Problems As a result of studies to solve the above-mentioned problems, the present inventors have examined the use of a tensile member using the above-mentioned fiber having a high elastic modulus, from a new viewpoint. The present invention has been reached. However, the gist of the present invention resides in a tensile material for applying a tensile force to both ends, which is obtained by winding continuous filaments around an end member having an arc shape at the ends.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
FIG. 1 shows an example in which a plurality of tensile members of the present invention are connected. FIG. 2 shows a top view of the tensile member of the present invention, and FIGS. 3 and 4 show examples of side views of the tensile member of the present invention.

The tensile material of the present invention is a tensile material for applying a tensile force to both ends. And the structure has at least the end member (1) having an arc shape at the end and the continuous filaments (2) wound around the end member. As the end member, any shape can be adopted as long as the portions corresponding to both ends when a tensile force is applied to the tensile member have at least an arc shape. For example, there may be a case where two cylindrical end members as shown in FIG. 3 are provided at both ends, or a case where one belt-shaped member having both ends in an arc shape is provided as shown in FIG. Any material may be used. For example, a steel pipe or a resin roll may be used.

Since the end portion of the end member is arcuate, there is an advantage that there is no sharp bending of the fiber and the stress transmission of the tensile force such as the tension of the pulley is facilitated. On the other hand, as the continuous long fibers used in the tensile material of the present invention, fibers having a high elastic modulus, for example, carbon fibers, glass fibers,
Aramid fiber, vinylon fiber, silicon carbide fiber, boron fiber, ceramic fiber, metal fiber, nylon fiber, polyester fiber, etc. may be mentioned, and two or more kinds may be combined, but carbon in terms of elastic modulus, strength and durability. Fibers are preferred. Particularly, it is preferable to use high-performance fibers having a tensile strength of 200 kgf / mm ² or more and a tensile elastic modulus of 10 tf / mm ² or more, particularly carbon fibers.

The continuous continuous fiber of the present invention means the use of continuous single fibers, the use of a fiber bundle in which the single fibers are bundled in advance, and the prearrangement of the fibers in a uniaxial or biaxial direction.
Using a woven or randomly arranged fiber sheet formed by bundling a fixed width sheet, and resin-impregnated fibers impregnated with these, resin-containing fiber sheets, etc., or those cured with a resin It is meant to include the form, as the resin to be impregnated, for example, epoxy resin, unsaturated polyester resin, phenol resin, diallyl phthalate resin, bismaleimide resin, polyimide,
A thermosetting resin such as polyurethane resin or a room temperature curing resin may be used. The length is preferably 0.5 m or more, more preferably 0.5 m or more and 100 m or less.

As a preferred embodiment of the present invention, as shown in FIG. 1, a plurality of such tension members are used to connect them by using a connecting member (3) which is inscribed in the end of each pulling end member. The form may be mentioned. As the connecting member, any connecting member can be adopted as long as it has a shape inscribed in the arc of the end portion, and for example, a rod-shaped or pipe-shaped steel material or resin material, a fiber-reinforced resin material, or the like is used. As a more preferable form, a tension member in which fibers are wound around the center of one end member and a form in which fibers are wound around both sides of the end member are adopted, for example, as shown in FIG. There is a mode in which they are alternately connected to each other.

[0011]

As described above, according to the present invention, a lightweight and rust-resistant fiber material having a high elastic modulus such as carbon fiber can be easily connected without having a complicated mechanism. It is possible to provide a tensile member capable of transmitting a stress of a tensile force. Therefore, it is excellent in durability and safety of tensile force transmission in fields that require long tensile materials such as tensile materials used for bridges,
In addition, it is possible to provide a tension member that is easy to design.

[Brief description of drawings]

FIG. 1 is a view showing an example in which a plurality of tensile members of the present invention are connected.

FIG. 2 is a view of an example of the tensile member of the invention of the present application viewed from above.

FIG. 3 is a view showing an example of the tensile member of the present invention seen from the side.

FIG. 4 is a view showing an example of the tension member of the present invention viewed from the side.

[Explanation of symbols]

 1 ... End member, 2 ... fiber, 3 ... connecting material

Claims (2)

[Claims] 1. A tensile member for applying a tensile force to both ends, wherein the continuous member is wound around an end member having an arcuate end. 2. A tensile member formed by connecting a plurality of the tensile members according to claim 1 by using a connecting member provided inscribed in an end portion of an end member.