JP3147562U - Joining structure of a wooden structure of an existing wooden building and a passage drilling jig for forming the joining structure - Google Patents

Abstract

The present invention provides a joining structure for a wooden structure of a wooden building that can increase the joining strength of the wooden structure of an existing wooden building without peeling off floor materials such as tatami mats.
A passage extending from the outer surface of a column base 1 or a capital head of an existing wooden building to the inside of the base 3 or the beam through the lower end surface or the upper end surface of the column base or the capital head, and filled in the passage. And a mandrel 5 embedded via an adhesive layer 4.
[Selection] Figure 1

Description

  The present invention relates to a joint structure of a wooden structure of an existing wooden building and a passage drilling jig for forming the joint structure. More specifically, an adhesive is filled in a pre-formed passage so as to reach from the column base or stigma of an existing wooden building to the base, girder, or beam, and the adhesive layer is obtained by curing. The present invention relates to a joint structure of a wooden structure of a wooden building composed of a mandrel embedded in the core, and a passage drilling jig for forming the joint structure.

  In order to cope with the lack of strength of the joints of wooden buildings, metal reinforcement hardware is fixed to the joints of the wooden structures such as columns and beams by fixing means such as nails, bolts and nuts.

As mentioned above, the method of reinforcing the joints of a wooden structure with reinforcement hardware has the problem that the reinforcement hardware and bolts may be rusted, and for installation in existing wooden buildings In many cases, it is difficult to reinforce the joint unless the flooring or the like is temporarily removed.

  In order to solve the problem of metal rust, in the invention described in Patent Document 1, as shown in FIG. 6, a pillar, a beam, or the like of a wooden structure configured on a base 3 installed on an existing foundation B When the FRP reinforcing plate 5 was bonded to the wooden structure 1 to reinforce the structure 1, the deteriorated portion of the structure 1 was removed and removed before the reinforcing plate 15 was bonded with the adhesive 4. A method of filling a repair material E containing reinforcing short fibers in a portion is proposed.

  In this method, it is possible to reinforce the walls, floors, ceilings, roofs, etc. of existing wooden structures, but in order to improve the basic strength as a structure or restore the reduced strength In addition, it has been proposed to reinforce wooden structures such as columns and beams that constitute a framework in a wooden structure.

  In order to reinforce the wooden structure more effectively, the reinforcing plate is disposed over half the circumference of the structure including the repair material filling portion, and the reinforcing plate is bonded to reinforce the structural material. In particular, by reinforcing with a reinforcing plate extending over the entire circumference of the structural material, the reinforcing effect is enhanced, and the reinforcing part of the structure is covered over the entire surface, thereby avoiding the exposure of the wood surface and preventing deterioration due to corrosion of the wood. Propose that.

  As described above, in the invention described in Patent Document 1, it is possible to reinforce by bonding without using a bolt or the like, and stress acting on the reinforcing plate is received over the entire area of the bonding surface, so stress concentration hardly occurs, and the structure is Reinforced efficiently.

  Moreover, in invention of patent document 2, in the wall repair structure of a wooden house, as FIG. 7 shows, the column base part and foundation of the column member which comprise a wall are arrange | positioned and reinforced. Yes. The reinforcing metal piece 14 is a substantially L-shaped metal member in which a vertical mounting piece 14b is erected on one side of the horizontal mounting piece 14a, and one or more ribs 14c are provided at a corner thereof. A plurality of mounting holes 14d are formed in the piece 14b.

JP 2002-276165 A Japanese Patent No. 3887246

  However, in the invention described in Patent Document 1, since the reinforcing plate is provided on the outer surface of the pillar constituting the wooden structure, the strength of the joint portion as a wooden structure combining the pillar and the beam is improved. In addition, since the outer surface of the pillar is covered, there is a problem that the pillar provided in the guest room or the reception area becomes conspicuous. On the other hand, in the invention described in Patent Document 2, since the L-shaped reinforcing hardware is attached to the outer surfaces of the pillars and beams by nails, the occurrence of rust (rust) is unavoidable. It is necessary to peel off floor materials such as tatami mats.

  Therefore, the present invention has an object to provide a column base / base joint structure that can be constructed without peeling tatami mats or the like in order to increase the joint strength of an existing wooden building.

The joint structure of the wooden structure of the wooden building according to one aspect of the present invention includes a passage extending from the outer surface of the column base of the existing wooden building to the inside of the foundation through the lower end surface of the column base,
It is characterized by comprising a mandrel embedded through an adhesive layer filled in the passage.

A passage extending from the outer surface of the stigma of an existing wooden building according to another aspect of the present invention to the inside of the beam or beam through the upper end surface of the stigma;
It is characterized by comprising a mandrel embedded through an adhesive layer filled in the passage.

  Moreover, it is preferable that the said channel | path is one or two or more linear channel | paths extended from the outer surface of a column base to a base or a column head to a girder or a beam.

  Moreover, it is preferable that the recessed part connected with the said 1 or 2 or more channel | path is provided above the outer surface position of floor materials, such as a tatami, among the outer surfaces of the said column base.

  Moreover, it is preferable that a filling part is provided in the recess.

  The mandrel is preferably a rod-shaped body made of metal or synthetic resin.

  Further, a passage drilling jig for forming a joint structure of a wooden structure of a wooden building according to another aspect of the present invention includes a block pressed against an outer surface of a column base or a column head, and a drill in the block. A hole for inserting a drill bit of the machine is formed.

  According to the column base / base and the column head / girder / beam connection structure of the present invention, the base or girder penetrates the lower end surface or upper end surface of the column base or the column head from the outer surface of the column base or the column head of the existing wooden building. Alternatively, it is composed of a passage that reaches the inside of the beam and a mandrel embedded through an adhesive layer filled in the passage, so that the column base (or stigma) can be removed from the base (or beam). Can be prevented. In other words, even if a large earthquake occurs, the column base (or column head) does not come off from the foundation (or beam), and it is not necessary to remove floor materials such as tatami mats during reinforcement work. Easy to do.

  The column base / base joint structure of the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional explanatory view showing a joint structure of a wooden structure of a wooden building according to an embodiment of the present invention, FIG. 2 is a perspective explanatory view of FIG. 1, and FIG. 3 is provided with a passage shown in FIG. FIG. 4 is an explanatory view showing an example of application of bracing material when the joining structure of the wooden building of FIG. 1 is applied, and FIG. 5 is an explanatory view of a main part of FIG. .

  Referring to FIGS. 1 and 2, the joining structure 10 of the wooden building of the present embodiment reaches the inside of the base 3 from the outer surface 1 a of the column base 1 of the existing wooden building through the lower end surface 1 b of the column base 1. It is comprised from the channel | path C and the metal core 5 embed | buried via the adhesive bond layer 4 with which it filled in this channel | path C. FIG.

  In the present embodiment, the passage C has two passages C extending from the outer surface 1a of the column base 1 to the base 3 installed on the foundation B (see FIG. 2). Is appropriately determined depending on the size of the passage C, and is not limited to two, but may be one or three or more. As shown in FIG. 1, the passage C is formed at an angle θ with respect to the column base 1 in order to increase the bonding strength.

  In this case, as shown in FIG. 3, the hole formed in the block G while pressing the guide composed of the block G in which the hole H having an angle θ equal to the angle of the passage C with respect to the column base 1 is pressed against the column base 1 If a drill bit is inserted into H and the drill machine is operated, a desired angle θ can be formed with respect to the column base 1.

  When the passage C is formed in the column base 1 and the base 3, the adhesive of about 2/3 of the volume of the passage C is filled, and then the mandrel 5 is slowly inserted into the passage C, in about 3 hours. The adhesive is cured, and a joint structure in which a mandrel is provided in the passage C via the adhesive layer 4 is obtained.

  In this Embodiment, as a material of the adhesive bond layer 4, an epoxy resin, methylmethacryl resin, vinyl ester resin, unsaturated polyester resin, a phenol resin etc. can be used, for example. Further, as the material of the mandrel 5, a rod-shaped body formed of a fiber-reinforced synthetic resin (FRP) such as carbon fiber or aramid fiber in addition to a metal rod-shaped body such as a bolt can be used.

  Here, as shown in FIGS. 1 and 2, a recess R communicating with the passage C is provided at a position above the tatami of the outer surface 1 a of the column base 1. The drill bit of the drill machine is inserted. The recess R is closed by providing a filling such as a putty from an aesthetic point of view.

  In the above embodiment, the joint structure between the column base and the base of the wooden building has been described. However, the joint structure 10 of the wooden structure of the wooden building of the present invention is between the base and the base. Needless to say, this also applies between the stigma and the beam (or girder).

  And if the joining structure 10 of the wooden structure of the wooden building of this invention is employ | adopted, since the channel | path C can be formed from above the upper surface of the tatami 7, as shown in FIG. In this case, there is no need to peel off the floor material such as the tatami mat 7 arranged on the floor board 11, and there is a great advantage that the reinforcement work can be easily performed. Since the joining strength is improved and the pillar is prevented from coming off the base, the brace 8 also has a lower end of the brace 8 above the tatami 7 without peeling off the tatami 7 disposed on the floor board 11 (see FIG. 5). ) Is attached to the leg portion of the column 1 by the fixing means 9 such as a nail or a screw, and the upper end portion of the brace 8 can be attached to the head portion of the column 1 below the duck 2.

It is sectional explanatory drawing which shows the joining structure of the wooden structure of the wooden building concerning embodiment of this invention. FIG. 2 is a perspective explanatory view of FIG. 1. It is explanatory drawing which showed an example of the jig | tool for drilling the channel | path shown in FIG. It is explanatory drawing which shows the example of application of a bracing material at the time of applying the junction structure of the wooden structure of the wooden building of FIG. It is principal part explanatory drawing of FIG. It is explanatory drawing which shows an example of the conventional column base-base joining structure. It is explanatory drawing which shows the metal fitting for reinforcing the conventional column base.

Explanation of symbols

1 Column base 2 Kamoi 3 Base 4 Adhesive layer 5 Core (bolt)
6 joist 7 tatami 8 bracing 9 fixing means 10 joining structure 11 of wooden structure of wooden building 11 floor board

Claims (8)

A passage extending from the outer surface of the column base of an existing wooden building to the inside of the foundation through the lower end surface of the column base;
A joining structure for a wooden structure of a wooden building, comprising: a mandrel embedded through an adhesive layer filled in the passage. A passage extending from the outer surface of the stigma of an existing wooden building to the inside of the beam or beam through the upper end surface of the stigma;
A joining structure for a wooden structure of a wooden building, comprising: a mandrel embedded through an adhesive layer filled in the passage. The joint structure according to claim 1 or 2, wherein the passage is one or two or more linear passages extending from an outer surface of the column base to a base, or from a column head to a girder or a beam. The joining structure according to claim 3, wherein a recess communicating with the one or more passages is provided above an outer surface position of a floor material such as a tatami mat on an outer surface of the column base. The joining structure according to claim 4, wherein a filling portion is provided in the recess. The joining structure according to claim 1, wherein the mandrel is a rod-shaped body made of metal or synthetic resin. The joint structure according to claim 6, wherein the synthetic resin rod-shaped body is a rod-shaped body formed of carbon fiber or fiber-reinforced synthetic resin. A jig for forming a passage for forming a joint structure of a wooden structure of a wooden building according to claim 1, wherein the block is pressed against the outer surface of a column base or a stigma, and a drill machine is provided in the block. A passage drilling jig characterized in that a hole for inserting a drill bit is formed.

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