JP2016118069A - Wood-based member, wood-based member manufacturing method and building reinforcing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wood-based member, a wood-based member manufacturing method and a building reinforcing method in which flexural strength and flexural rigidity are improved while adapting to the Building Standards Act.SOLUTION: A wood-based member 100 includes a wood-based JAS laminated lumber 1 with a rectangular cross section perpendicular to the material length direction and being adapted to the Building Standards Act, and a wood-based flat plate 2 laminated to the side surface of the JAS laminated lumber 1 extending to the material length direction. The flat plate 2 is formed of grooves 3 extending to the material length direction, reinforcing members 4 harder than wood-based materials are inserted into the grooves 3, and adhesives are sealed in the grooves 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wooden member, a method for manufacturing a wooden member, and a method for reinforcing a building.

  Wood that has been reinforced by inserting a reinforcing material therein has been proposed as a building material (see, for example, Patent Document 1).

JP 2008-38480 A

  For wood used for building construction, it is necessary to use a wood-based member that conforms to the Building Standards Act, that is, JAS (Japanese Agricultural Standard) glulam or JAS lumber, that is, JAS material. In order to reinforce a building material using the technique disclosed in the above patent document, if a reinforcing bar or the like is inserted into the JAS material, the JAS material cannot be said to be a member that complies with the Building Standard Law. Unsuitable for use as a material.

  If wood that does not conform to the Building Standards Law is used for construction, the building must receive a special approval from the Minister of Land, Infrastructure, Transport and Tourism, or the contractor must receive a special approval from the Minister of Land, Infrastructure, Transport and Tourism for the construction method using wood. The procedure for obtaining such authorization is very complicated.

  The present invention has been made in view of the above circumstances, and is a wooden member capable of improving bending strength and bending rigidity while conforming to the Building Standards Act, a method for manufacturing a wooden member, and a method for reinforcing a building The purpose is to provide.

In order to achieve the above object, the wood member according to the first aspect of the present invention comprises:
The cross section perpendicular to the material length direction is a polygonal shape, and a wood-based member conforming to the Building Standards Law,
A wood-based flat plate bonded to the side surface of the member extending in the material length direction;
With
The flat plate is formed with a groove extending in the material length direction,
A reinforcing member that is harder than a wood-based material is inserted into the groove, and an adhesive is sealed in the groove.

The bottom surface of the groove is a curved surface or a polygonal surface curved along the side surface of the reinforcing member.
It is good as well.

A small reinforcing member having a smaller diameter than the reinforcing member is inserted into a space formed between the inner wall of the groove and the reinforcing member.
It is good as well.

A small wooden board that closes at least a part of the opening of the groove is inserted,
It is good as well.

The member is a laminated timber or lumber.
It is good as well.

The reinforcing member is
A deformed bar or aramid rod,
It is good as well.

The method for producing a wood-based member according to the second aspect of the present invention is as follows:
A first step of producing a wood-based flat plate having grooves extending in the material length direction;
A second step of inserting a reinforcing member harder than a wood-based material into the groove;
A third step of enclosing an adhesive in the groove;
A fourth step in which the flat plate is bonded along a side surface extending in the material length direction of a wood-based member that has a polygonal cross section perpendicular to the material length direction and conforms to the Building Standards Act;
including.

In the third step,
Before encapsulating the adhesive in the groove part, a primer treatment is applied to thinly apply the adhesive to the entire inner wall of the groove part and cure the applied adhesive.
It is good as well.

In the third step,
After enclosing the adhesive, sandwich the flat plate between the base and the holding plate to prevent bending of the flat plate due to the penetration of the adhesive,
It is good as well.

In the first step,
To a flat wooden base material,
A plurality of members narrower than the base material are bonded to each other at an interval to produce a flat plate having the groove portion.
It is good as well.

In the first step,
Processing the bottom surface of the groove portion to be a curved surface or a polygonal surface curved along the side surface of the reinforcing member;
It is good as well.

The method for reinforcing a building according to the third aspect of the present invention is as follows:
A first step of producing a wood-based flat plate having grooves extending in the material length direction;
A second step of inserting a reinforcing member harder than a wood-based material into the groove;
A third step of enclosing an adhesive in the groove;
A fourth step of bonding the flat plate to a side surface extending in the length direction of a pillar or beam of a building conforming to the Building Standard Law;
including.

  According to this invention, the wooden member is configured by bonding the reinforced flat plate to the wooden member conforming to the Building Standard Law. If it does in this way, bending strength and bending rigidity can be improved about the wood system member, conforming to a building standard law.

It is a perspective view which shows the structure of the wood type member which concerns on Embodiment 1 of this invention. It is sectional drawing of the flat plate of FIG. It is a flowchart of the manufacturing process of the wood type member of FIG. FIG. 4A is a diagram showing a state in which a groove is formed on a flat plate. FIG. 4B is a diagram illustrating a state where an adhesive is thinly applied to the groove. FIG. 4C is a diagram illustrating a state where a reinforcing member is inserted into the groove. FIG. 4D is a diagram illustrating a state where the enclosing portion is formed. It is a graph which shows the change of the bending strength of the wood type member of FIG. It is a figure which shows typically the ratio of the reinforcement member for calculating | requiring bending rigidity and bending strength. It is a graph which shows the bending rigidity of the wood type member of FIG. It is a top view of the wood type member which has bending strength and bending rigidity equivalent to the wood type member of FIG. It is sectional drawing which shows the structure of the flat plate (the 1) of the wood type member which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the flat plate (the 2) of the wood type member which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the structure of the flat plate of the wood type member which concerns on Embodiment 3 of this invention. It is sectional drawing which shows the structure of the flat plate of the wood type member which concerns on Embodiment 4 of this invention. FIG. 13 (A) to FIG. 13 (C) are diagrams showing a method for inserting a small wooden board into a groove. It is sectional drawing which shows the structure of the flat plate of the wood type member which concerns on Embodiment 5 of this invention. It is sectional drawing which shows the structure of the flat plate of the wood type member which concerns on Embodiment 6 of this invention. 16 (A) to 16 (C) are views showing a method for manufacturing a groove portion in a flat plate. It is a figure which shows the structure of the fixing tool used for suppression of the curvature of the flat plate of the wood type member which concerns on Embodiment 7 of this invention. It is a flowchart of the reinforcement method of the building which concerns on Embodiment 8 of this invention. FIG. 19A to FIG. 19F are diagrams showing various flat plate bonding patterns. It is a table | surface which shows the kind of wood type member.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Embodiment 1 FIG.
First, a first embodiment of the present invention will be described. As shown in FIG. 1, a wood-based member 100 according to Embodiment 1 of the present invention includes a JAS laminated material 1 and a flat plate 2. The wood-based member 100 is configured by adhering a flat plate 2 to a side surface extending in the material length direction of a wood-based JAS laminated material 1 that conforms to the Building Standard Law.

  The JAS laminated timber 1 is a wood-based member that extends in one direction (the length direction) in conformity with the Building Standard Law. The JAS laminated material 1 has a rectangular cross section orthogonal to the material length direction. The JAS laminated material 1 is a plate material obtained by adhering small pieces of wood (lamina) such as cedar, bay pine, larch, and rubber with an adhesive. Here, it is assumed that cedar wood is used for lamina. If a cedar material is used as the JAS laminated material 1, the effect of the present invention becomes more remarkable. As the adhesive, for example, an adhesive such as urea resin, melamine / urea cocondensation resin, phenol resin, vinyl acetate resin, urethane resin, or resorcinol resin can be used. The thickness of the lamina is 45 mm, and the width in the short direction of the lamina can be 105 mm or more and 210 mm or less.

  The flat plate 2 is a wood-based flat plate bonded to the side surface of the JAS laminated material 1 extending in the length direction. The width of the flat plate 2 in the short direction is the same as that of the JAS laminated material 1. As shown in FIGS. 1 and 2, the flat plate 2 is formed by bonding the flat plate 2A and the flat plate 2B with an adhesive. As the adhesive, the same adhesive as described above is used.

  A groove 3 extending in the material length direction is formed on the flat plate 2A. As shown in FIG. 2, in this embodiment, the bottom surface of the groove 3 is a flat surface. The position and depth of the groove portion 3 are determined such that the distance (thickness) from the outer surface of the flat plate 2 formed by bonding the flat plates 2A and 2B to the reinforcing member 4 is a certain distance or more.

  A reinforcing member 4 that is harder than the wood-based material is inserted into the groove 3. The reinforcing member 4 is a columnar member. The reinforcing member 4 is fitted into the groove 3 so as not to protrude from the groove 3. As the reinforcing member 4, for example, deformed reinforcing bars D10 to D25 are used.

  Further, an adhesive is sealed in the groove 3. The sealed adhesive is cured to form a sealed portion 5 in the groove portion 3. As such an adhesive, for example, an epoxy resin adhesive is used. The surface of the enclosure part 5 is flush with the surface of the flat plate 2A.

  The flat plate 2A in which the reinforcing member 4 is inserted into the groove 3 and the encapsulating portion 5 is formed by inserting an adhesive is bonded to the flat plate 2B on the surface where the opening of the groove 3 is formed. Thereby, the flat plate 2 is formed. In the flat plate 2, the thickness from the outer surface to the reinforcing member 4 (deformed bar) is equal to or greater than a certain thickness. As a result, the wood-based member 100 conforms to the standards of the Building Standard Law from the viewpoint of fire resistance.

  The board thickness of the wood-based member 100 in the stacking direction of the flat plate 2 can be 300 mm or more and 1000 mm or less. The wooden member 100 is used as a pillar or beam of a building.

  Then, the manufacturing method of the wood type member 100 is demonstrated.

  As shown in FIG. 3, first, a rectangular wooden plate 2A having a groove 3 extending in the material length direction is manufactured (step S1; first step). Specifically, as shown in FIG. 4A, the flat plate 2A is cut using an end mill to form a groove 3 extending in the material length direction of the flat plate 2A. The length, depth, and width of the groove 3 are such that the reinforcing member 4 can be inserted, and the thickness from the reinforcing member 4 to the outer surface of the wooden member 100 is equal to or greater than the thickness that conforms to the Building Standard Law. It is set to be.

  Subsequently, primer processing is performed (step S2). Here, as shown in FIG. 4B, the adhesive is thinly applied to the entire inner wall of the groove portion 3, and the applied adhesive is cured after a predetermined time. This primer treatment is performed to prevent the flat plate 2A from being bent. Since the epoxy adhesive has low viscosity, after being applied, it penetrates somewhat from the inner wall of the flat plate 2A to the inside of the flat plate 2A, which is fibrous, by capillary action. The adhesive that has penetrated into the wood shrinks when cured. If the penetration amount of the adhesive increases, the flat plate 2A may be deformed due to the shrinkage of the adhesive. In this embodiment, in order to suppress this deformation, the adhesive is first thinly applied to the inner wall of the groove 3 and cured after penetration, and then the groove 3 is filled with the adhesive to form the encapsulating part 5. . In this way, the amount of adhesive penetrating into the flat plate 2A can be reduced, and deformation of the flat plate 2A can be suppressed.

  Subsequently, the reinforcing member 4 that is harder than the wood-based material is inserted into the groove 3 (step S3; second step). Thereby, as shown in FIG. 4C, the reinforcing member 4 (deformed bar) is installed in the groove portion 3.

  Subsequently, an adhesive is sealed in the groove 3 and cured to form the sealed portion 5 (step S4; third step). Here, as described above, the groove portion 3 is filled with an adhesive such as an epoxy resin. Since the epoxy adhesive has a low viscosity, when it flows into the groove 3, it spreads throughout the groove 3. When the flowing adhesive is hardened, the encapsulating part 5 is formed in the groove part 3 as shown in FIG.

  Subsequently, the flat plate 2A is manufactured by bonding the flat plate 2A and the flat plate 2B using an adhesive (step S5). Thereby, the flat plate 2 shown in FIG. 2 is manufactured.

  Furthermore, the flat plate 2 is bonded along the side surface of the JAS laminated material 1 conforming to the building standard method using an adhesive (step S6: fourth step). Thereby, the wooden member 100 shown in FIG. 1 is manufactured.

FIG. 5 shows the bending strength characteristics of the wood-based member 100 according to this embodiment. In the graph of FIG. 5, the horizontal axis represents the ratio pt (%) of the cross-sectional area of the reinforcing member 4 to the cross-sectional area of the entire wood-based member 100 shown in FIG. 2 (cross-sectional area shown in FIG. 1). As shown in FIG. 6, when the thickness in the stacking direction of the wood-based member 100 is D, the width is B, and the total of the two cross-sectional areas of the reinforcing member 4 is at, the ratio pt is expressed by the following equation. Is done.
pt (%) = at / (B × D)

  In FIG. 5, the vertical axis represents the increase rate (magnification) of the bending strength due to the addition of the reinforcing member 4. On the vertical axis, the bending strength when the reinforcing member 4 is not inserted is shown as 1.0. As shown in FIG. 5, the rate of increase in the bending strength of the wood-based member 100 increases almost linearly as the proportion pt of the area occupied by the reinforcing member 4 increases. For example, if the proportion of deformed reinforcing bars is 3.5%, the rate of increase in bending strength is 3.5 times.

  FIG. 7 shows the bending rigidity characteristics of the wood-based member 100 according to this embodiment. In the graph of FIG. 7, the horizontal axis represents the ratio pt (%) of the cross-sectional area of the reinforcing member 4 to the cross-sectional area of the entire wood-based member 100 shown in FIG. 2. The vertical axis represents the increase rate (magnification) of the bending stiffness due to the addition of the reinforcing member 4. On the vertical axis, the bending rigidity when the reinforcing member 4 is not inserted is shown as 1.0.

  White circles represent the increase rate of bending stiffness when creep is ignored, and black circles represent the increase rate of bending stiffness when creep is considered (creep coefficient 2.0). Creep is a phenomenon in which strain increases with time when a continuous stress acts on an object. As shown in FIG. 7, the increase rate of the bending stiffness of the wood-based member 100 increases almost linearly as the area occupied by the reinforcing member 4 increases, regardless of whether creep is ignored or creep is considered. ing. For example, when creep is considered, the bending rigidity when the proportion of the reinforcing member 4 is 3.5% increases to about 10.0 times.

The cross-sectional secondary moment of the JAS glulam 1 is Iw, the cross-sectional secondary moment of the reinforcing member 4 (deformed bar) with respect to the gluing centroid is Is, and the reinforcing member 4 is deformed against the bending Young's modulus Ew of the JAS gluing 1 The ratio of Young's modulus Es of (rebar) is n (= 31.5). In this case, the cross-sectional secondary moment Ie of the wooden member 100 is expressed by the following equation.
Ie = Iw + (n−1) · Is
Thus, the cross-sectional secondary moment Ie of the wood-based member 100 becomes larger than the cross-sectional secondary moment Iw of the JAS laminated material 1 due to the reinforcing member 4.

  FIG. 8 shows an example of a wooden member 100 and a wooden member equivalent to bending strength and bending rigidity. As shown in FIG. 8, the wood member 100 according to this embodiment can obtain bending strength and bending rigidity equivalent to those of a wood member obtained by adding a wide wood plate 2 ′ to the JAS glulam 1. become.

  As described above in detail, according to this embodiment, the wooden member 100 is bonded to the wooden JAS laminated material 1 that conforms to the Building Standards Law and the flat plate 2 into which the reinforcing member 4 is inserted. It is formed by. If it does in this way, bending strength and bending rigidity can be improved about wood system member 100, conforming to a building standard method.

  In this embodiment, the JAS laminated material 1 is a base material conforming to the Building Standard Law. However, the present invention is not limited to this. Instead of the JAS laminated lumber 1, lumber obtained from a single piece of wood may be used.

  Further, an aramid rod may be used as the reinforcing member 4 instead of the deformed reinforcing bar.

Embodiment 2. FIG.
In the wood-based member 100 according to Embodiment 1 described above, the bottom surface of the groove 3 is a flat surface. However, the present invention is not limited to this. In the wood-based member 100 according to this embodiment, the bottom surface of the groove 3 is a curved surface curved along the side surface of the reinforcing member 4 as shown in FIG.

  If the bottom surface of the groove portion 3 is along the side surface of the reinforcing member 4, the gap between the reinforcing member 4 and the bottom surface of the groove portion 3 can be reduced, so that the filling amount of the adhesive can be reduced. . If it does in this way, the usage-amount of expensive adhesion amount can be decreased and the manufacturing cost of the wood type member 100 can be reduced.

  The flow of the manufacturing process of the wood-based member 100 is the same as that of the first embodiment (see FIG. 3). However, in this embodiment, in step S1 (production of the flat plate 2A), the bottom surface of the groove 3 is processed so as to be a curved surface curved along the side surface of the reinforcing member 4. This processing is performed using a tool called a router end mill.

  As shown in FIG. 10, the bottom surface of the groove portion 3 may be a multi-curved surface that is curved along the side surface of the reinforcing member 4. Even if it does in this way, the filling amount of an adhesive agent can be decreased and the manufacturing cost of the wood type member 100 can be reduced. Furthermore, the concentration of stress generated in the flat plate 2A can be reduced.

  As described above, in the wood-based member 100 according to this embodiment, the amount of the adhesive is reduced by matching the shape of the bottom surface of the groove portion 3 with the shape of the side surface of the reinforcing member 4, and the wood-based member 100. The manufacturing cost can be reduced.

Embodiment 3 FIG.
In the wood-based member 100 according to the above-described first and second embodiments, only the reinforcing member 4 is inserted into the groove 3. However, the present invention is not limited to this. In the wood-based member 100 according to this embodiment, as shown in FIG. 11, a small reinforcing member 8 having a smaller diameter than the reinforcing member 4 is inserted into a space formed between the inner wall of the groove portion 3 and the reinforcing member 4. Has been. As the small reinforcing member 8, a deformed reinforcing bar or an aramid rod can be used.

  If the small reinforcing member 8 is inserted into the groove portion 3, the gap between the reinforcing member 4 and the bottom surface of the groove portion 3 can be reduced, so that the filling amount of the adhesive can be reduced. If it does in this way, the usage-amount of expensive adhesion amount can be decreased and the manufacturing cost of the wood type member 100 can be reduced. Moreover, the bending strength and bending rigidity of the wood-based member 100 are further increased by the small reinforcing member 8.

  The flow of the manufacturing process of the wood-based member 100 is the same as that of the first embodiment (see FIG. 3). However, in this embodiment, in step S3 (insertion of the reinforcing member 4), the small reinforcing member 8 is installed on the bottom surface of the groove portion 3 before the reinforcing member 4 is inserted, and then the reinforcing member 4 is inserted into the groove portion 3. That's fine.

  As described above, in the wood-based member 100 according to this embodiment, by inserting the small reinforcing member 8 between the inner wall of the groove portion 3 and the reinforcing member 4, the amount of adhesive is reduced accordingly. be able to. As a result, the manufacturing cost of the wooden member 100 can be reduced.

Embodiment 4 FIG.
In the wood-based member 100 according to Embodiment 3 described above, only the reinforcing member 4 and the small reinforcing member 8 are inserted into the groove portion 3. However, the present invention is not limited to this. In the wood-based member 100 according to this embodiment, as shown in FIG. 12, a small wooden board 9 that closes at least a part of the opening of the groove 3 is inserted into the groove 3. If such a small wood board 9 is inserted into the opening portion of the groove portion 3, the amount of adhesive filling the groove portion 3 can be reduced, and the enclosing portion 5 in the groove portion 3 and the flat plates 2A and 2B are bonded. Since the part which an adhesive agent contacts can be shortened, the reliability of adhesion | attachment with the flat plate 2A and the flat plate 2B can be improved.

  The flow of the manufacturing process of the wood-based member 100 is substantially the same as that of the first embodiment (see FIG. 3). However, in this embodiment, in step S4 (formation of the enclosing portion 5), the small wooden board 9 is inserted into the groove portion 3 before the groove portion 3 is filled with the adhesive and hardened.

  13A to 13C show a method for inserting the small wooden board 9 into the groove 3. In this step, first, as shown in FIG. 13A, the reinforcing member 4 is inserted, and the small wooden board 9 is fitted into the groove portion 3 filled with the adhesive. When the small wooden board 9 is inserted into the groove 3, a part of the adhesive filled in the groove 3 overflows from the groove 3. After the adhesive is cured in this state, as shown in FIG. 13 (B), the part of the adhesive and the small wooden board 9 protruding from the groove 3 is shaved with a milling machine to flatten the upper surface. In this way, the flat plate 2A shown in FIG. 13C is manufactured.

  As described above, in the wood-based member 100 according to this embodiment, the amount of adhesive sealed in the groove 3 can be reduced by inserting the small wooden board 9 into the opening of the groove 3. The contact area between the adhesive sealed in the groove 3 and the adhesive that bonds the flat plate 2B can be reduced as much as possible to improve the reliability of the bonding.

Embodiment 5 FIG.
In the wood-based member 100 according to the first embodiment described above, only the reinforcing member 4 and the small wooden board 9 are inserted into the groove portion 3. However, the present invention is not limited to this. In the wood-based member 100 according to this embodiment, as shown in FIG. 14, in addition to the reinforcing member 4 and the small wooden board 9, a small reinforcing member 8 is inserted between the reinforcing member 4 and the small wooden board 9.

  The flow of the manufacturing process of the wood-based member 100 is substantially the same as that of the first embodiment (see FIG. 3). However, in this embodiment, in step S3 (insertion of the reinforcing member 4), the small reinforcing member 8 is inserted into the groove portion 3, and in step S4 (formation of the enclosing portion 5), the groove portion 3 is filled with an adhesive and cured. Before this, the small wooden board 9 is inserted into the groove 3.

  As described above, in the wood-based member 100 according to this embodiment, the small wooden board 9 is inserted into the opening of the groove 3 and the small reinforcing member 8 is inserted between the small wooden board 9 and the reinforcing member 4. In addition, the amount of adhesive enclosed in the groove 3 can be reduced, and the bending strength and bending rigidity of the wood-based member 100 can be further improved.

Embodiment 6 FIG.
In the wood-based member 100 according to Embodiment 1 described above, the groove 3 is formed in the flat plate 2A by cutting using an end mill. However, the present invention is not limited to this. As shown in FIG. 15, the groove 3 may be formed by arranging a plurality of square members 11 in combination on the base material 10.

  The flow of the manufacturing process of the wood-based member 100 is substantially the same as that of the first embodiment (see FIG. 3). However, in step S1 (production of the flat plate 2A), first, as shown in FIGS. 16 (A) and 16 (B), the flat wooden base material 10 has a plurality of narrower widths than the base material 10. The square members 11 are bonded with an adhesive at intervals. Further, a flat plate 2A having the groove portion 3 is manufactured by processing the bottom surface of the groove portion 3 into a curved surface using a router end mill with reference to FIG.

  In this way, it is possible to reduce the amount of wood cut as much as possible to reduce the amount of wood waste and to efficiently use expensive wood.

Embodiment 7 FIG.
In each of the above-described first embodiments, the primer treatment is performed to suppress the bending of the flat plate 2A due to the curing of the adhesive. However, the present invention is not limited to this. For example, in the formation of the enclosing portion 5 in step S4, the flat plate 2A is fixed using a fixture as shown in FIG. 17 until the adhesive filled in the groove portion 3 is cured, thereby suppressing the bending of the flat plate 2A. You may make it do.

  As shown in FIG. 17, the flat plate 2 </ b> A is placed on the base 20, and the flat plate 2 </ b> A is sandwiched between the base 20 and the holding plate 21. Two screws 22 are inserted between the base 20 and the holding plate 21, and bolts 23 are attached to the screws 22. By adjusting these bolts 23, it is possible to adjust the force for holding the flat plate 2 </ b> A between the base 20 and the holding plate 21. In this embodiment, this fixed base is used to suppress the bending of the flat plate 2 until the adhesive is cured and the enclosing portion 5 is formed.

  As described above, in this embodiment, since the bending of the flat plate 2A is suppressed using the fixing base, the flat flat plate 2 is manufactured, and the manufactured flat plate 2 is securely attached to the JAS laminated material 1. Can do.

Embodiment 8 FIG.
In each of the embodiments described above, the woody member 100 before construction is reinforced. However, the present invention is not limited to this. You may make it reinforce a building by sticking the flat plate 2 on the side of the pillar or beam of a building.

  FIG. 18 shows a flow of a building reinforcement method. As shown in FIG. 18, the process from step S1 to step S5, that is, the process of manufacturing the flat plate 2 is the same as the flow of FIG. 3 in the first embodiment. After step S5 is completed, that is, when the flat plate 2 is manufactured, the manufactured flat plate 2 is bonded to a building column or beam (step S16; fourth step). Thereby, the seismic strength of a building improves.

  In this way, it is also possible to apply the flat plate 2 to reinforce the pillars or beams of an already constructed building.

  In each of the above embodiments, the number of reinforcing members 4 inserted into the flat plate 2 is two, but may be three as shown in FIG. There is no limit to the number of reinforcing members 4. Further, as shown in FIG. 19B, the flat plate 2 may be attached only to one side of the JAS laminated material 1. Further, as shown in FIGS. 19C and 19D, the flat plate 2A may be stacked in two or more stages. Further, as shown in FIGS. 19E and 19F, the flat plate 2A with respect to the JAS laminated material 1 may be disposed outside and the flat plate 2B may be disposed inside. In any case, it is desirable that the reinforcing member 4 is disposed as far as possible outside the wooden member 100.

  As shown in FIG. 20, the wooden member 100 is not limited to a rectangular cross section. The present invention can also be applied to a member for a pillar having a cross shape, a G shape, or an L shape. Further, the present invention is also applicable to beam members such as RG beam members, 2G / 3G beam members, and FG beam members.

  The wood-based member 100 of the present invention is simply configured to add the flat plate 2 to a member that conforms to the Building Standards Law, and thus has an advantage that the overall strength calculation is very easy.

  In the above embodiment, the reinforcing member 4 is a columnar member, but is not limited thereto. The reinforcing member 4 may be a square bar or a bar having another shape.

  In the above embodiment, the cross section of the JAS laminated material 1 to which the flat plate 2 is bonded is rectangular. However, the present invention is not limited to this. The original member may be a polygonal column material. Such column members include members having a cross shape, a G shape, and an L shape cross section.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The present invention is suitable as a material for a structure such as a building or a bridge.

DESCRIPTION OF SYMBOLS 1 JAS laminated material 2, 2A, 2B Flat plate, 3 groove part, 4 reinforcement member, 5 enclosure part, 8 small reinforcement member, 9 small wood board, 10 base material, 11 square material, 20 foundation, 21 restraining board, 22 screw, 23 Bolt, 100 wood-based material

Claims (12)

The cross section perpendicular to the material length direction is a polygonal shape, and a wood-based member conforming to the Building Standards Law,
A wood-based flat plate bonded to the side surface of the member extending in the material length direction;
With
The flat plate is formed with a groove extending in the material length direction,
A reinforcing member stiffer than a wood-based material is inserted into the groove, and an adhesive is sealed in the groove.
Woody material. The bottom surface of the groove is a curved surface or a polygonal surface curved along the side surface of the reinforcing member.
The woody member according to claim 1. A small reinforcing member having a smaller diameter than the reinforcing member is inserted into a space formed between the inner wall of the groove and the reinforcing member.
The woody member according to claim 1. A small wooden board that closes at least a part of the opening of the groove is inserted,
The woody member according to any one of claims 1 to 3. The member is a laminated timber or lumber.
The woody member according to any one of claims 1 to 4. The reinforcing member is
A deformed bar or aramid rod,
The woody member according to any one of claims 1 to 5. A first step of producing a wood-based flat plate having grooves extending in the material length direction;
A second step of inserting a reinforcing member harder than a wood-based material into the groove;
A third step of enclosing an adhesive in the groove;
A fourth step in which the flat plate is bonded along a side surface extending in the material length direction of a wood-based member that has a polygonal cross section perpendicular to the material length direction and conforms to the Building Standards Act;
A method for producing a wood-based member including In the third step,
Before encapsulating the adhesive in the groove part, a primer treatment is applied to thinly apply the adhesive to the entire inner wall of the groove part and cure the applied adhesive.
The method for producing a wood-based member according to claim 7. In the third step,
After enclosing the adhesive, sandwich the flat plate between the base and the holding plate to prevent bending of the flat plate due to the penetration of the adhesive,
The method for producing a wood-based member according to claim 7. In the first step,
To a flat wooden base material,
Producing a flat plate having the groove by laminating a plurality of square bars narrower than the base material at intervals.
The manufacturing method of the wood type member as described in any one of Claims 7-9. In the first step,
Processing the bottom surface of the groove portion to be a curved surface or a polygonal surface curved along the side surface of the reinforcing member;
The method for producing a wood-based member according to claim 10. A first step of producing a wood-based flat plate having grooves extending in the material length direction;
A second step of inserting a reinforcing member harder than a wood-based material into the groove;
A third step of enclosing an adhesive in the groove;
A fourth step of bonding the flat plate to a side surface extending in the length direction of a pillar or beam of a building conforming to the Building Standard Law;
Reinforcement method of buildings including

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