JPH0667008U - Column laminated wood - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] In addition to the conventional lamination in the thickness direction, a single layer contact in the cross section of the mouth is assembled by arranging multiple veneers side by side in the cross direction, The purpose is to provide a columnar laminated material whose shape can be freely set. [Structure] In a columnar laminated material 1 formed by laminating and adhering a plurality of long veneers 2 in layers, each layer is formed by arranging a plurality of long veneers in parallel in a cross section direction. In addition, as a cutting edge of the adhesive surface of each long veneer, in the adhesive lines 3 and 4 appearing as the dividing lines in each layer of the cross section of the mouth end, the adhesive lines appearing in the adjacent layers do not continue. , Characterized in that long veneers of each layer are arranged side by side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a columnar laminated wood formed by laminating and adhering a plurality of long veneers to each other, and in particular, by laminating long veneers having a relatively small cross section in parallel in the cross section direction of the wood, The present invention relates to a columnar laminated material formed in a large cross section having a large cross section.

[0002]

[Prior art]

 Conventionally, columnar laminated wood has been formed by laminating a plurality of long single plates. The columnar laminated wood has been widely used for pillars and beams of wooden buildings because its strength is not inferior to that of so-called one-piece lumber. As shown in FIG. 4, such a conventional columnar laminated material a is obtained by laminating and adhering a long single plate b having a constant thickness T and a width W in a thickness direction to a constant height H. In this way, a columnar laminated material having a cross section (W × H) was formed.

By the way, in such a conventional columnar laminated material a, the width W of the veneer b and the width W of the laminated material as a product are equal to each other. There was the current situation that the width W of the laminated wood to be decided was decided. Therefore, in order to increase the size of the cross section, that is, the width D (the height H is determined by the number of stacked layers), it is necessary to use the veneer d having a wider width W. In order to obtain this wide veneer d, it was necessary to cut out a large-diameter wood, and naturally it was necessary to cut down a large old tree. Obtaining such large trees has traditionally been difficult in quantity and price in Japan, and most of them depended on cheap foreign-made materials (so-called foreign materials).

[0004]

[Problems to be solved by the device]

 However, in recent years, it has become difficult to obtain such a large amount of external materials in a stable manner due to factors such as changes in the import environment and increased awareness of forest environment protection. In addition, the goodness of wooden construction has been reviewed, and the momentum of using wood as a structural material is increasing not only in general private homes, but also in large buildings such as gymnasiums, schools, and public facilities. Therefore, it is necessary to use a material with a cross section that is larger than the conventional cross section (10.5 to 12 cm square), but in the conventional structure, since it depends on the width W of the veneer b as described above, a columnar assembly with a large cross section is required. It was difficult to form the material.

Therefore, the present invention has been made by paying attention to these problems. In addition to the conventional stacking in the thickness direction, a plurality of veneers are arranged in parallel in the cross section so that there is a single contact in the cross section of the mouth. The purpose of the present invention is to provide a columnar laminated wood whose cross section can be freely set by gluing it together.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a columnar laminated material formed by laminating and bonding a plurality of long veneers in a plurality of layers, and each layer includes a plurality of the long veneers arranged in parallel in the cross section direction of the mouth end. It is characterized by being configured. In addition, as a cutting edge of the adhesive surface of each long veneer, in the adhesive line that appears as a dividing line within each layer of each layer of the cross section of the gate, so that the adhesive lines that appear in adjacent layers do not continue. It is characterized in that long veneers of each layer are arranged side by side.

[0007]

【Example】

 Next, specific examples of the columnar laminated material according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing the present embodiment, FIG. 2 is a plan view showing a cross section of another embodiment, and FIG. 3 is a perspective view showing yet another embodiment. The columnar laminated material 1 is formed by laminating long rectangular veneers 2 each having a constant thickness T and having a rectangular cross-section. In this assembly, two long veneers 2 are arranged side by side in the cross section direction and adhered to form each layer, and an appropriate number of layers thus formed (in this embodiment, 7 layers) are laminated.

With such a structure, the height H of the columnar laminated product to be a product is determined by the number of laminated layers and the thickness T of the long veneer 2, and the width W is set to one layer in parallel and bonded. It can be set by the number of individual long veneers 2, 2, ... Various patterns can be considered for the arrangement of the long veneer 2 in each layer. That is, as shown in FIGS. 1 and 2 (B), as the cutting edge of the adhesive surface of each long veneer 2, the adhesive lines 3, 3 appearing as the dividing line in each layer of the cross section of the mouth, .. are arranged with different widths of the long veneers 2 of each layer so that the adhesive lines 3 of the adjacent layers are not continuous, and a so-called horizontal splicing pattern is shown in FIG. 2 (A). As described above, there is a normal laminated pattern in which adjacent adhesive lines 3 are connected to each other, and is appropriately selected.

Note that the proof strength as a pillar material differs depending on the pattern. According to the test conducted by the present inventor, the lateral splicing pattern has a better yield strength than the ordinary laminated pattern. Furthermore, as a derivative of such a laminated pattern, as shown in FIG. 3, the cross section of the mouth may be formed in an I shape. By adopting such a cross-sectional shape, a large bending strength can be obtained despite a small cross-sectional area.

The arrangement of the adhesive lines 4 in the lengthwise direction per layer is based on the Japanese Agricultural Standards, and the distance L in the lengthwise direction between the adhesive lines 4 of the adjacent layers is the thickness of the long veneer 2. Set it to be 12 times or more than T.

[0011]

【effect】

 Since the present invention is configured as described above, the height H of the cross section of the mouth can be freely set by appropriately selecting the number of layers to be laminated, and a long veneer for each layer can be appropriately selected. By doing so, a columnar laminated material having a large cross section can be formed. By using a beam having such a large cross section, a structure with a large span can be assembled.

Further, since the long veneer to be used may have a narrow width, it is not necessary to rely on a wide outer material. For example, a so-called cedar, which has been conventionally discarded without its use, is used. There is an advantage that the thinned wood can be effectively used. Furthermore, not only the stacking direction, but also each layer is composed of multiple veneers. Even if there are large variations in strength characteristics such as Young's modulus, bending strength, etc. for each plate (mostly in thinned wood), when laminated, this is averaged and the strength resistance of the pillar-shaped laminated wood as a product is high. There is an effect that the variation can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing the present embodiment.

FIG. 2 is a plan view showing the cross-sectional shape of the mouth end of another embodiment.

FIG. 3 is a perspective view showing still another embodiment.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

1 ... Column laminated wood 2 ... Long veneer 3,
4 ... Adhesive line

Claims (2)

[Scope of utility model registration request] 1. In a columnar laminated wood formed by laminating and bonding a plurality of long veneers in a plurality of layers, each layer has a plurality of long veneers (2, 2, ...) Arranged in the cross section direction. A columnar laminated material characterized by being constructed and assembled. 2. An adhesive line (3), which appears as a dividing line in each layer of the cross section of the mouthpiece, as a cutting edge of the adhesive surface of each long veneer (2), and which appears in an adjacent layer. (3) The columnar laminated wood according to claim 1, wherein the long single plates (2) of the respective layers are assembled in parallel so that they are not continuous.