JP3958450B2 - Wood connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wood connection structure using a joint metal fitting, and more particularly to a high-strength connection structure for building wood used in a wooden house.
[0002]
[Prior art]
Many methods are known as connection structures for building wood. However, in recent years, connection structures excellent in earthquake resistance of wood structural materials are required, and various reinforcing connecting materials and reinforcing methods using joint metal fittings have been proposed and developed.
[0003]
As a typical example of the reinforcing method, FIG. 3 shows a schematic perspective view in the case of using a joint fitting for connecting a column member and a horizontal member.
The fitting 11 is attached to the rectangular metal plate 13 projecting from the base 12 of the L-shaped joining fitting attached to the column A with the slit 14 at the end of the horizontal member B from above. The upper surface of the horizontal member B to be applied is driven, the slit 14 is fitted to the metal plate 13, the horizontal member B is connected to the column member A, and the inside of the slit 14 is formed from one side surface of the horizontal member B. A fixing pin 17 is inserted into a through hole 18 that passes through the metal plate 13 and reaches the other side surface, and is fastened and fixed.
[0004]
[Problems to be solved by the invention]
However, when the horizontal member B is bonded to the column member A using the above-described joining metal fitting, the metal plate 13 inserted into the slit of the horizontal member B is integrated with the horizontal member B entirely. In other words, since it is a part fastening that is fastened and integrated by the fixing pin 17, when a vibration due to an earthquake or the like occurs, stress concentrates on the fastening part by the fixing pin 17 and breaks in this part. If this occurs, the cross-sectional defect is easily caused, and the horizontal member B is detached from the column member A.
[0005]
In order to integrate the metal plate 13 and the horizontal member B, in addition to fastening with the fixing pin 17, an adhesive is applied to the entire surface of the metal plate 13 and fitted into the slit of the horizontal member B, Although it is conceivable to join the horizontal member B, since the adhesive force between the metal and the wood is weak, the metal plate-like member and the horizontal member are easily peeled off by shaking due to an earthquake or the like.
Therefore, as a result of repeated trial manufacture and research to strengthen the adhesive force, the metal plate 13 is fitted into the slit of the horizontal member B through a member having an adhesive force to both metal and wood. As a result, it was found that strong joint integration was achieved.
Accordingly, an object of the present invention is to integrate a metal joint metal used for a wood connecting portion with wood and greatly improve the earthquake resistance of the wood joined portion.
[0006]
[Means for Solving the Problems]
The wood connection structure of the present invention is a slit formed at the end of the other wood through a reinforcing fiber plastic layer with a metal plate projecting from the base of a joint fitting attached to one side of the wood. It is the structure which carried out fitting adhesion to.
The reinforcing fiber plastic layer may be formed so that the reinforcing fiber plastic sheet is bonded and integrated with the metal plate of the joining metal fitting, and then fitted and bonded to the slit of the other wood. Reinforced fiber plastic mold material, which has been formed in advance to the shape corresponding to the outer surface shape of the metal plate body of the metal fitting, is attached to the metal plate body and attached in one piece, and the slit formed at the end of the other wood It may be formed by fitting and bonding. On the other hand, a reinforcing fiber plastic mold material may be fitted and fixed in a slit formed at the end of the other wood, and then the metal plate-like body of the joint metal fitting may be fitted and bonded.
[0007]
The reinforcing fiber plastic used for the reinforcing fiber plastic layer used in the connection structure of the present invention is a sheet-like material in which a reinforcing fiber is impregnated with a resin.
As such reinforcing fibers, long fibers selected from ceramic fibers such as glass fibers and alumina fibers, metal fibers, carbon fibers and aramid fibers, organic fibers such as polyethylene fibers, etc. are used. Is preferably glass fiber, carbon fiber, aramid fiber, or the like.
[0008]
Examples of the resin impregnated in the reinforcing fiber include epoxy resins, unsaturated polyester resins, epoxy acrylate resins, polyurethane resins, diallyl phthalate resins, and phenol resins for thermosetting resins.
[0009]
The mold material used in the invention of claim 2 is integrally attached so as to cover the metal plate-like body of the joint metal, and is integrated by fitting into the slit of the joint portion of the wood. A plastic sheet is used to form a hard mold having a shape corresponding to the outer surface shape of the metal plate.
[0010]
Examples of the adhesive used for the integration of the metal plate and the reinforcing fiber plastic layer include an epoxy type and an epoxy acrylate type, and the adhesive used for the integration of the reinforcing fiber plastic layer and the wood is also available. The same thing as the above-mentioned is mentioned.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the connection structure of the present invention will be described with reference to the accompanying drawings.
(A) of FIG. 1 is an example of the connection structure of the wood of this invention, and is a typical fragmentary perspective view of the state which connected the horizontal member to the column material, (b) is FIG. 1 (a). FIG. FIG. 2 is a schematic exploded perspective view showing a state before connection between the column member and the horizontal member shown in FIG.
[0012]
FIG. 1 shows a connection structure in which a horizontal member is connected to a pillar member.
As shown in FIG. 1 (b), the column material A and the horizontal member B are made of reinforced fiber plastic with the metal plate-like body 3 of the joining bracket 1 attached to the column member A in the slit 4 of the horizontal member B. They are fitted and integrated through the layer 5.
[0013]
The connection structure of the present invention is formed by the following procedure.
As shown in FIG. 2, first, both surfaces of the metal plate-like body 3 protruding from the base 2 of the joining metal fitting 1 attached to the columnar material A are bonded to each other with a reinforcing fiber plastic sheet (not shown). The reinforcing fiber plastic mold 6 formed in advance in a shape corresponding to the outer surface shape of the metal plate 3 is attached to and integrated with the metal plate 3 using an adhesive. .
[0014]
Next, an adhesive is applied to the surface of the reinforcing fiber plastic sheet or the reinforcing fiber plastic mold material 6 so that the slits 4 formed at the end of the horizontal member B are formed in the metal plate-like body 3 of the joint fitting 1. The metal plate 3 and the horizontal member B are bonded and integrated in the slit 4 by placing the upper surface of the horizontal member B from above and fitting the slit 4 into the metal plate 3.
[0015]
Further, the fixing pin 7 is inserted through the metal plate-like body 3 in the slit 4 from one side surface of the horizontal member B and reaches the other side surface, and is fastened by being inserted into the through hole 8. The body 3 and the horizontal member B are joined together, and the column member A and the horizontal member B are firmly connected.
In the description of the connection structure of the present invention, the case where the horizontal member is attached to the column member by using a joint metal is illustrated, but the present invention is not limited to this, and the column member and the base, or the through column and the base, etc. It can also be applied to metal fittings used in the joints.
[0016]
In the connection structure of the present invention, the metal plate-like body and the mold material are integrated by attaching a reinforcing fiber plastic mold material to the metal plate-like body protruding from the base of the joint metal attached to the wood A. Furthermore, the metal plate-like body is integrated with the wood B at the slit portion of the wood B by fitting and bonding the metal plate-like body covered with the mold material to the slit formed at the end portion of the wood B. . That is, the metal plate-like body and the wood B are fully integrated through the reinforcing fiber plastic layer.
[0017]
Further, in a state where the metal plate and the wood B are integrated, a fixing pin is inserted through a hole penetrating from one side of the joint of the wood B to the other side through the metal plate in the slit. By fastening and fixing, the strength of the joint between the wood A and the wood B is significantly improved.
[0018]
【The invention's effect】
According to the wood connection structure of the present invention, when the wood is fastened using the joint metal fitting, the metal plate-like body to be fitted into the slit of the joint portion can be firmly integrated with the wood, Cross-sectional defects are less likely to occur and the earthquake resistance can be greatly improved. Moreover, the strength of the joint can be increased as a composite material by using a reinforced fiber plastic sheet as a reinforcing material for preventing splitting of a wood part having a cross-sectional stress inferior to that of a metal plate.
[Brief description of the drawings]
FIG. 1 (a) is an example of a wood connection structure of the present invention, and is a schematic partial cross-sectional view of a state in which a horizontal member is connected to a column member, and FIG. FIG.
FIG. 2 is a schematic exploded perspective view showing a state before connection between a column member and a horizontal member shown in FIG.
FIG. 3 is a perspective view showing a connection structure of a conventional example using a joint fitting for connecting a column member and a horizontal member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,11 Joining metal fittings 2,12 Base part of joining metal fittings 3,13 Metal plate-like body 4,14 Slit 5 Reinforcement fiber plastic layer 6 Mold material 7,17 Fixing pin 8,18 Through-hole A Column material B Horizontal material

Claims (2)

Two pieces of wood are joined by fitting and bonding a metal plate projecting from the base of a joint fitting attached to the side of one piece of wood to a slit formed at the end of the other piece of wood through a reinforcing fiber plastic layer. A wood connection structure characterized by joining together. The metal plate projecting from the base of the joint fitting attached to one side of the wood is connected to the other through the reinforcing fiber plastic sheet mold formed in a shape corresponding to the outer surface shape of the metal plate. A wood connection structure characterized in that two pieces of wood are joined by fitting and bonding to a slit formed at the end of the wood.

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