JP2817579B2 - Cordage structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordage structure in which a tension cable is attached to a structural material such as a roof or a wall in a tensioned state to reinforce it.

[0002]

2. Description of the Related Art In order to reinforce a structural material such as a roof or a wall, a tension cable such as a rope is provided in parallel and tensioned by a required tensile force. In other words, a cable is attached to a structure such as a roof or a wall to form a cable structure, and an external force acting on the structural material is shared also on the cable, thereby improving the proof strength performance.

[0003]

However, for example, the outer wall of a glass curtain wall, which secures strength and rigidity by a tension cable, does not stop because of its small attenuation when it starts to vibrate against an out-of-plane force due to wind or the like. was there.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a cable staying structure capable of effectively eliminating the vibration of the roof or the outer wall of the glass curtain wall due to wind or the like.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a cable-stayed cable structure in which a tensile cable is attached to a structural material such as a roof or a wall and tensioned by a required tensile force. Has a structure in which a joint portion made of a superelastic alloy is provided to introduce prestress (claim 1).

[0006] Instead of the joint portion, an auxiliary member made of a superelastic alloy may be attached in parallel with the tension cable to introduce a prestress (claim 2).

[0007]

[Function] Because the joint part of the cable and the cable is made of superelastic alloy, vibration is applied to the structural material such as the roof and the wall, and when this is transmitted to the tensile cable, the hysteresis characteristic of the superelastic alloy part The vibration energy is absorbed based on
Vibration can be effectively attenuated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a structural material formed of an outer wall of a glass curtain wall. The structural material 1 is provided with a tension cable 2 such as a steel cable having both ends fastened to upper and lower ends thereof. I am nervous with power.

In this case, a bundle 3 is disposed between the tension cable 2 and the structural member 1 at an intermediate portion in the longitudinal direction of the tension cable 2, and a glass curtain is formed from the bundle 3. A joint 4 made of a superelastic alloy (a so-called rubber alloy) is formed at an intermediate portion of the tension cable 2 extending to the upper and lower ends of the outer wall of the wall, thereby introducing a prestress.

[0010] A normal metal alloy undergoes plastic deformation when it is pulled beyond a strength level called an elastic limit. In the case of this superelastic alloy, however, even if it is greatly deformed beyond the elastic limit within a certain temperature range, the tensile strength is lowered. When the force returns to a certain value, it returns to the elastic state. That is, the characteristics of the superelastic alloy have a hysteresis characteristic with respect to the fluctuating axial force from the tensile state as shown in FIG. 2B, and a certain alloy such as a nickel-titanium alloy corresponds to this.

Now, the cable pulling force of the pulling cable 2 fluctuates due to the vibration caused by the out-of-plane force on the structural material 1 comprising the outer wall of the glass curtain wall. In the case of a conventional cable, the fluctuation of the tension due to this vibration is as shown in FIG.
The motion shown by Δ in FIG. However, a joint 4 made of a superelastic alloy material is formed in the tensile cable 2, and the characteristics of the superelastic alloy material are as shown in FIG.
As described above, the superelastic alloy material absorbs the energy of the variable tensile force of the tensile cable 2 because it has a hysteresis characteristic with respect to the variable axial force from the tension state. Then, the energy absorbing action becomes an effect of damping the vibration of the structural material 1 as the outer wall of the glass curtain wall.

In the above embodiment, the joint 4 made of a superelastic alloy was formed in the middle of the tension cable 2 to introduce prestress, but as shown by the imaginary line in FIG. Prestress can also be introduced by attaching an auxiliary member 10 made of a superelastic alloy in parallel.

FIGS. 3 and 4 show another embodiment. 3 shows a configuration example in which a plurality of bundles 3 are arranged between the tension cable 2 and the structural material 1, and FIG. 4 shows a configuration example in which two wall configurations shown in FIG. .

Further, FIG. 5 shows that a tension cable 2 is attached to a horizontally arranged structural material 1 such as a roof so as to be tensioned by a required tensile force. In this embodiment, a plurality of bundles 3 are appropriately arranged, and a prestress is introduced through a joint portion 4 made of a superelastic alloy in the middle of the tension cable 2. Although two joint portions 4 made of a superelastic alloy are provided on both sides of the tension cable 2 at the fixing side thereof, as shown in FIG. It can also be configured to be mounted.

Also in the embodiment of the roof shown in FIGS. 5 and 6, instead of providing a joint portion 4 made of a superelastic alloy in the middle of the tension cable 2, it is made of a superelastic alloy in parallel with the tension cable 2. An auxiliary member may be provided.

[0016]

In summary, according to the present invention, the tension cable and the joint portion of the tension cable are made of a superelastic alloy or the auxiliary member of the superelastic alloy is attached in parallel with the tension cable. By utilizing the hysteresis characteristics of the alloy, the vibration energy can be absorbed and the vibration can be effectively damped.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a cordage structure according to one embodiment of the present invention.

FIG. 2 is a diagram showing a change in tension due to vibration, and FIG.
FIG. 3 is a diagram illustrating a change in tension due to vibration in the case of a conventional cable, and FIG. 3B is a diagram illustrating a hysteresis characteristic of a superelastic alloy.

FIG. 3 is a diagram showing another embodiment of the present invention.

FIG. 4 is a diagram showing still another embodiment of the present invention.

FIG. 5 is a diagram showing another embodiment of the present invention.

FIG. 6 is a diagram showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structural material 2 Tension cable 3 Bundle material 4 Joint part 10 Auxiliary member

Claims (2)

(57) [Claims] 1. A tension cable structure in which a tension cable is attached to a structural material such as a roof or a wall to tension the cable with a required tensile force. A cable-stayed structure characterized by being introduced. 2. A pre-stress is introduced by attaching an auxiliary member made of a superelastic alloy in parallel with said tensile cable instead of said joint portion.
A cordage structure as described.