JP2543999Y2 - Structural glulam - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to a glued laminated wood obtained by gluing and bonding a plurality of wooden laminas, and is particularly suitable for use as a structural member such as a beam or a pillar of a wooden building. The present invention relates to a simple structural glued laminated timber.

"Conventional technology and its problems" Glued laminations obtained by gluing and bonding a large number of wooden laminas have been widely used in various fields, but in recent years, structural members of relatively large-scale wooden buildings, that is, They are also being used as beams and columns.

However, the structural characteristics of conventional glulams, especially the shearing characteristics, are not always sufficient. Therefore, when glulams are used as structural members such as beams and columns of large-scale buildings, they must have a large cross section. Problem.

The present invention has been made in view of the above circumstances, and has an object to provide a structural glued laminated lumber having sufficient shear characteristics even in a small cross section and suitable for use as a structural member such as a beam or a column. And

[Means for Solving the Problems] A first invention is a structural laminated wood used as a structural member such as a beam or a pillar of a wooden building, and is a laminated laminated body in which a plurality of wooden laminas are laminated and bonded. In the outer layer portion, long fibers of high-rigidity fibers such as carbon fibers are arranged in the direction intersecting with the length direction of the lamina laminate and over the entire length of the lamina laminate in a state of covering the entire periphery of the lamina laminate. It is characterized in that the burn-in lamina that protects the lamina laminate in which the long fibers are disposed is adhered so as to sandwich the long fibers. .

The second invention is a structural laminated wood used as a structural member such as a beam or a pillar of a wooden building. A plurality of wooden laminas are laminated and bonded to an outer layer portion of a laminated lamina, such as carbon fiber. By arranging the long fibers of the high-rigidity fibers in the same direction as the length direction of the lamina laminate and in the direction intersecting with the length direction and covering the entire circumference of the lamina laminate, the length of the lamina laminate is increased. It is characterized in that a burn-in laminator that is strengthened and protects the lamina laminate on which the long fibers are disposed via the long fibers is bonded so as to sandwich the long fibers.

[Function] The laminated wood of the first invention is a laminated laminated body made of high-strength fibers or high-rigidity long fibers arranged in a direction intersecting with the length direction of the laminated laminated body and covering the entire circumference. The generation and propagation of shear cracks caused by external force and the like are prevented over the entire circumference of the steel sheet, thereby improving the shear characteristics.

In addition, long fibers are provided to cover the entire circumference of the lamina laminate, and the burning allowance lamina is bonded to the entire circumference via these long fibers, so that it is reinforced against shear loads from all directions. And the burning fiber lamina ensures that the long fibers are protected.

The laminated wood according to the second invention is composed of high-strength fibers or high-rigidity filaments arranged in the same direction as the length direction of the lamina laminate and in a direction intersecting the length direction and covering the entire circumference. In addition, the bending deformation and the occurrence of shear cracks caused by external force and the like and the propagation thereof are prevented over the entire circumference of the lamina laminate, so that the bending characteristics and the shear characteristics are improved.

In addition, long fibers are provided to cover the entire circumference of the lamina laminate, and the burning allowance lamina is bonded to the entire circumference via these long fibers, so that it is reinforced against shear loads from all directions. And the burning fiber lamina ensures that the long fibers are protected.

"Example" Hereinafter, an example of the present invention will be described with reference to the drawings.

First, a first embodiment will be described with reference to FIGS.

The laminated wood B of the first embodiment is used as a beam. As shown in FIGS. 1 and 2, the laminated wood B of the first embodiment has a plurality of (10 sheets), a burn-in laminator 13 serving both as a makeup and a burn-in is bonded to the outside of a laminating body 12 formed by laminating lamina 11 vertically. Then, the fiber cloth 14 is wound around the lamina laminate 12 over the entire circumference, so that the fiber cloth 14 is formed between each lamina 11 forming the lamina laminate 12 and the burnout lamina 13 of the outermost layer. It is configured to be sandwiched between and adhered.

The fiber cloth 14 is formed by weaving long fibers in both directions in a state substantially orthogonal to each other.
The orientation of the long fibers in one direction matches the direction intersecting with the length direction of the lamina laminate 12, so that the orientation of the long fibers in the other direction is arranged in a state that matches the same direction as the length direction,
Further, as schematically shown in FIG. 3, the lamina laminate 12 is wound in a state of being stacked on the lower surface thereof.

In the laminated wood B of the first embodiment, among the long fibers forming the fiber cloth 14, the long fibers arranged in a direction intersecting with the length direction of the lamina laminate 12 enhance the shearing property, In addition, bending deformation is prevented by the long fibers arranged in the same direction as the length direction on the upper surface and the lower surface of the lamina laminate 12, so that the bending characteristics are also enhanced. Moreover, since the fiber cloth 14 is superimposed on the lower surface of the lamina laminate 12, the amount of long fibers in the lower portion that receives a large tensile force is generally doubled as compared with the amount of long fibers in the upper portion. For this reason, the bending characteristics are sufficiently enhanced.

In the first embodiment, the winding of the fiber cloth 14 around the laminated laminate 12 may be as shown in FIG. That is, the fibrous cloth 14 may be divided into two pieces, and the two pieces may be overlapped on the upper surface and the lower face of the lamina laminate 12 so as to wrap the lamina laminate 12 from both sides. In this case, since the amount of long fibers is doubled on both the upper surface and the lower surface of the lamina laminate 12, it is preferable when the direction of the bending load is not limited.

Further, in the above laminated material B, the fiber cloth 14 previously woven into a mesh shape is used, but a modified example shown in FIG. 5 is also conceivable. The laminated wood B1 shown in FIG. 5 is obtained by first arranging long fibers 15 linearly in the same direction as the length direction of the lamina laminate 12 on the upper surface and the lower surface of the lamina laminate 12, The long fibers 16 are spirally wound in a direction intersecting the direction. In this case, the shear characteristics are enhanced by the wound long fibers 16, and the bending characteristics are enhanced by the long fibers 15 arranged on the upper surface and the lower surface of the lamina laminate 12, which is exactly the same as that of the above-described laminated wood B. . When it is not necessary to enhance the bending characteristics, the long fibers 15 may be omitted. Also,
In this case, the winding pitch (inter-interval) of the long fibers 16 may be appropriately set according to the strength or the like required for the laminated material B1, and the form of the laminated material B1 may be appropriately determined.

Next, FIG. 6 shows a second embodiment of the present invention. The laminated material C of the second embodiment is used as a pillar. As shown in FIG. 6, the laminated material C is formed by bonding a plurality of (seven in the illustrated example) lamina 21 by gluing. A burn-in laminator 23 that also serves as a make-up and a burning allowance is adhered to the outside of the laminated laminar laminate 22 that is formed. The long fibers 24 are wound in a direction (horizontal direction in this case) intersecting the vertical direction. In the laminated wood C of the second embodiment, the generation and propagation of shear cracks are prevented by the long fibers 24, and thus the shear characteristics are enhanced.

FIG. 7 shows a third embodiment of the present invention. The laminated wood D of the third embodiment is used as a pillar similarly to the case of the second embodiment. Instead of the long fibers 24 in the embodiment, a fiber cloth 25 similar to that of the laminated wood B of the first embodiment is wound around the lamina laminate 22. In this case, the long fibers arranged in a direction intersecting with the length direction of the lamina laminate 22 of the fiber cloth 25 enhance the shear characteristics, and are bent by the long fibers arranged in the same direction as the length direction. The characteristics are also enhanced at the same time.

[Effects of the Invention] As described in detail above, the structural glued laminated timber of the present invention has the following effects.

The structural laminated timber of the first invention is characterized in that high-strength fibers or high-rigidity long fibers are arranged in the longitudinal fault of the lamina laminate in a direction intersecting the longitudinal direction of the lamina laminate and over the entire length of the lamina laminate. It is made by arranging and adhering these long fibers between the laminas, so that the occurrence and propagation of shear cracks are prevented by these long fibers, and they have sufficient shear characteristics even in a small cross section. Therefore, it is suitable for use as a structural member such as a beam or a pillar of a large-scale wooden building.

The structural glued laminated timber of the second invention is characterized in that the long fibers of the high-strength fiber or the high-rigidity fiber are placed in the longitudinal fault of the lamina laminate in the same direction as the length direction of the lamina laminate and in the direction intersecting the length direction. In addition, since the long fibers are sandwiched between the laminas and adhered over the entire length of the lamina laminate, bending deformation, generation of shear cracks and their propagation are prevented by the long fibers. However, it has an effect of having sufficient bending characteristics and shearing characteristics, and is therefore suitable for use as a structural member such as a beam or a pillar of a large-scale wooden building.

Further, according to the first and second inventions, the structural glued laminated timber is provided.
The long fibers are arranged so as to cover the entire circumference of the lamina laminate, and the burn-in lamina is adhered to the entire circumference via the long fibers. Can be reinforced, and furthermore, the lamina laminate in which the long fibers are arranged can be protected from fires and other fires by the burn-in lamina provided on the entire circumference, whereby the long fibers are burned out by the fire Therefore, it is possible to prevent the strength of the laminated timber from being significantly reduced. That is,
The burning fiber lamina can reliably protect the long fiber from a fire such as a fire and maintain high strength. Further, even if the surface is scorched by a fire, it is extremely economical to regenerate the structural member composed of the lamina laminate very easily simply by replacing the burn-in lamina that is sandwiched between the long fibers. . In addition, since the entire circumference is covered with the burning lamina, the decorative effect unique to wood can be reliably obtained.

[Brief description of the drawings]

1 to 3 show a first embodiment of the present invention. FIG. 1 is a front view, FIG. 2 is a perspective view, and FIG. 3 is a front view showing a form of winding a fiber cloth. . FIG. 4 is a front view showing another example of the form of winding a fiber cloth. FIG. 5 is a perspective view showing a modification of the first embodiment. FIG. 6 is a perspective view showing a second embodiment of the present invention. FIG. 7 is a perspective view showing a third embodiment of the present invention. B, B1 …… Glued lumber, 11 …… Lamina, 12 …… Lamina laminate,
13… Lumina for burning, 14 …… Fiber cloth, 15,16 …… Long fiber, C, D …… Glued lumber, 21 …… Lamina, 22… Lamina laminate, 23 …… Lamina for burning, 24… ... long fiber, 25 ... fiber cloth.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Teruyuki Nakatsuji 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Tadashi Fujisaki 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Incorporated (72) Inventor Takuya Nukiue 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Corporation Incorporated (56) References JP-A-63-551 (JP, A) JP-A-49-61930 ( JP, A) JP-A-63-324 (JP, A) JP-A-62-60609 (JP, A) JP-A-62-226845 (JP, A) JP-A-62-45629 (JP, A) Showa 61-128005 (JP, U) Actually open Showa 63-165021 (JP, U) Actually open Showa 55-47530 (JP, U) Actually open Showa 58-86340 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A laminated wood for structural use used as a structural member such as a beam or a pillar of a wooden building, wherein a plurality of wooden laminas are laminated and bonded to an outer layer portion of a laminated lamina. By arranging the long fibers of the rigid fibers in the direction intersecting the length direction of the lamina laminate and covering the entire circumference of the lamina laminate over the entire length of the lamina laminate, the strength is increased, and these long fibers are strengthened. A laminated laminate for structural use, characterized in that a burn-in laminator for protecting a lamina laminate provided with long fibers is adhered around the entire circumference so as to sandwich the long fibers. 2. A laminated wood for structural use used as a structural member such as a beam or a pillar of a wooden building, wherein a plurality of wooden laminas are laminated and adhered to an outer layer portion of a laminated laminate of carbon fiber or the like. High strength by arranging the long fibers of the rigid fibers in the same direction as the length direction of the lamina laminate and in the direction intersecting with the length direction and covering the entire circumference of the lamina laminate. And a burn-in lamina for protecting the lamina laminate on which the long fibers are disposed is bonded around the entire circumference via these long fibers so as to sandwich the long fibers. Wood.