JPH0874332A - Butt joint structure of member - Google Patents

Abstract

(57) [Abstract] [Objective] The present invention relates to a joint structure of members such as laminated lumber used for columns, beams, etc. of a large-scale wooden building, and particularly to remarkably improve the strength of the joint portion. The present invention relates to a spliced structure of members that can be manufactured. [Structure] In a joint portion of members, the joint is jointed by a finger joint 4, and a small hole 11 is provided in the longitudinal direction of the member on the joint surface, and inside the small hole 11 and the joint surface of the other member. Similarly, the core material 8 is inserted so as to be positioned both in the small hole 11 provided similarly, the two joint surfaces are joined together, and the core material 8 is fixed by the pin 9 driven from the side peripheral portion of the member. It is characterized by doing.
Further, at the joint portion of the members, the finger surface 5
The reinforcing plate 3 is joined to and the fixing plate 3 is fixed to the pin 9. The reinforcing plate 3 is joined to the member by the finger joint 2.

Description

Detailed Description of the Invention

[0001]

[Object of the invention]

BACKGROUND OF THE INVENTION The present invention relates to a pillar of a large-scale wooden building,
The present invention relates to a splicing structure of members such as laminated wood used for beams and the like, and particularly to a splicing structure of members capable of significantly improving the strength of a spliced portion.

[0002]

BACKGROUND OF THE INVENTION Recently, the motivation for the promotion of wooden structures has spread to the field of large-scale buildings such as sports facilities such as gymnasiums and music facilities such as concert halls. Laminated timber is used as a large cross-section material, a long straight material or a curved material that can be applied to these large-scale wooden buildings. The laminated wood is used by splicing stock beams, which are processed (precut) stock beams centering on straight wood produced in advance so that they can be used for spots.

At the time of this joining, conventionally, as shown in FIG. 6, a method has been adopted in which the joining portion is joined by a finger joint 4. Such a finger joint 4 has a high resistance to the vertical stress Fb, but is unexpectedly weak against the horizontal stress Fh, and is weak against the tension Ft acting in the direction to separate the joint surface. There was a flaw. Therefore, conventionally, as an example, a metal joining member as shown in FIG. 7 is used for the joint portion of the members such as the through portion such as the beam, and the bolting is performed. There was a decrease in proof stress due to the cross-section loss of the cut portion of the joining member formed in the above. Further, when such a plate-like joining member is used, it is necessary to tighten bolts at a plurality of points in order to obtain proof stress in the cutting direction (stress Fb in the vertical direction).
Along with this, the number of bolt holes has increased, and there has been a decrease in proof strength due to a cross-sectional defect due to the bolt holes. For this reason, the advent of a joining structure of members having high yield strength in both the vertical direction and the horizontal direction and having less cross-sectional defects has been desired.

[0004]

[Technical Items Attempted to Develop] The present invention has been made in consideration of such a background, and attempts to develop a new member joining structure capable of significantly improving the strength of the joining portion. It is a thing.

[0005]

Configuration of the Invention

According to another aspect of the present invention, there is provided a structure for joining members, wherein the joints are joined together by finger joints at the joints of the members, and a small hole is formed on the joint surface in the longitudinal direction of the members. Insert the core material so that it is located both in the small hole and in the small hole that is also provided on the joint surface of the other member, and join the two joint surfaces together, and place this core material on the side of the member. It is characterized by being fixed by a pin driven from the peripheral portion.

In addition to the above requirements, the member joining structure according to claim 2 joins the reinforcing plate to the finger surface at the joining portion of the members, and
This is fixed to the pin.

Furthermore, the joining structure of members according to claim 3 is characterized in that, in addition to the requirements of claim 2, the reinforcing plate is joined to the members by finger joints. And these means are intended to achieve the said objective.

[0008]

According to the invention described in claim 1, in the joint portion of the members, the joint is jointed by the finger joint, and the joint surface is provided with a small hole in the longitudinal direction of the member. Insert the core material so that it is located both inside and inside the small hole that is also provided on the joint surface of the other member, join the two joint surfaces, and fix the core material with the pin. Therefore, the proof stress is improved in both the vertical direction and the horizontal direction, and it is possible to join members having few cross-section defects.

According to the invention described in claim 2,
In the joint portion of the members, since the reinforcing plate is joined to the finger surface and fixed to the pin, the horizontal proof stress is improved, and the joining of the members with less cross-section loss can be achieved. it can.

Further, according to the invention described in claim 3, since the reinforcing plate is joined to the member by the finger joint, the proof strength in the horizontal direction is further improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. First, at the joint portion of the laminated material 1 in which the joints are joined by the finger joints 4 as defined in claim 1, a small hole 11 is provided in the longitudinal direction of the laminated material 1 in the joint surface, and inside the small hole 11 The core material 8 is inserted so as to be positioned both in the small hole 11 similarly provided on the joint surface of the other laminated member 1 and the two joint surfaces are joined together, and the core material 8 is The structure of fixing with the pin 9 will be described.

As shown in FIG. 2, a single finger 41 is engraved in a V-shaped wave on the joint surface of the laminated material 1, and a small hole 11 is formed substantially at the center of the joint surface and perpendicular to the joint surface. It is formed. The depth of the small hole 11 is 1 / the size of the core material 8 described later.
It is a little over two long. In addition, small holes 1 are
Bolt holes 12 so as to be orthogonal to a part of 1 and to penetrate perpendicularly to the finger surface 5 where the single finger 41 is visible.
Is provided.

The core member 8 is a rod-shaped member, and has pin holes 81 near both ends thereof. The pin 9 is a rod-shaped member in which a screw 91 is cut at both ends, and its length is slightly longer than the width of the laminated member 1. When inserted into the bolt hole 12, the pin 9 has a nut 92 with respect to the screw 91 at both ends. It is possible to tighten. Of course, it is also possible to use a bolt as the pin 9.

In order to construct a joining structure of members using such members, first, the adhesive B is applied to the engraved joint surface of the finger unit 41. Next, the core member 8 is inserted into the small hole 11 in one of the laminated members 1. At this time, the pin hole 81 in the core member 8 is inserted so as to communicate with the bolt hole 12 in the side peripheral portion of the laminated member 1. To do.

In this state, the pin 9 is inserted so as to pass through the pin hole 81. After doing this, it is desirable to temporarily fix the nut 92 to one or both of the screws 91 at both ends of the pin 9 and move to the subsequent work, but if there is no risk of the pin 9 falling off, etc., perform full tightening. It doesn't matter.

Next, the small hole 1 in the other laminated wood 1
The joints are spliced together so that the core material 8 is inserted into 1. Then, when the pin 9 is inserted into the bolt hole 12 as in the previous step, the pin 9 is inserted into the bolt hole 12 and the pin hole 8.
It is assembled in a state of penetrating 1 and.

In this state, in order to firmly join the joints with the adhesive B, as shown in FIG. 3, the jacks J are erected on the two pins 9 and fastened. Of course, if the nut used for temporary tightening in the previous step interferes with the tightening work of the jack J, remove it.

Then, after the adhesive B is continuously maintained for the time for training, the jack J is removed, and the nuts 92 are fastened to the pin 9 at both ends thereof, and the work is completed. Of course, when the headed bolt is used as the pin 9, the nut 92 is tightened only at one end thereof.

Next, as defined in claim 2 and as shown in FIG. 4, the joint portion joins the reinforcing plate 3 to the finger surface 5 and fixes the reinforcing plate 3 to the pin 9. Will be described. The reinforcing plate 3 is a so-called iron plate, and holes are provided at the same intervals as the intervals of the bolt holes 12 in the laminated member 1 joined together in the previous embodiment. Then, the reinforcing plate 3 can be attached to the structure described in the previous embodiment. After the adhesive B is dried, the jack J is removed, the reinforcing plate 3 is inserted into the pin 9, and the nut 92 is tightened. Of course, laminated wood 1 and reinforcing plate 3
The adhesive B may be applied to the contact surface with, and the reinforcing plate 3 may be made of any material other than iron, such as metal, wood, and synthetic resin.

A structure in which the reinforcing plate 3 is joined by a finger joint 2 as defined in claim 3 and shown in FIG. 5 will be described. When such a configuration is adopted, the V-shaped wave-shaped single fingers 21 are engraved on the finger surface 5 of the laminated member 1, and the same single-shaped fingers 21 are inscribed on the reinforcing plate 3 at a pitch of 10 mm as an example. Are joined so that they mesh with each other. Incidentally, the single finger 21 has a pitch of 10 mm, but this is not the limitation. Then, the reinforcing plate 3 can be attached to the structure described in the previous embodiment. After the adhesive B is dried, the jack J is removed, the reinforcing plate 3 is inserted into the pin 9 and the nut is tightened. Of course, the adhesive B may be applied to the contact surface between the laminated member 1 and the reinforcing plate 3. Further, the finger joint 2 may have a simple structure of a claw provided on one side and a groove provided on the other side that meshes with the claw.

[0021]

[Other application examples] Although the embodiments in which the ends of the laminated member 1 are joined to each other have been described above, the present invention can of course be applied to the joint portion of a structural unit such as a truss structure or a rigid frame structure.

[0022]

The present invention has the constitution as described above, and thereby exhibits the following effects. According to the invention described in claim 1, at the joint portion of the members, the joint is jointed by the finger joint 4, and the joint surface has a small hole 11 in the longitudinal direction of the member.
Is provided, and the core member 8 is positioned so as to be located both in the small hole 11 and in the small hole 11 similarly provided on the joint surface of the other member.
Insert and join the two joint surfaces together,
Since the core material 8 is fixed by the pin 9 driven from the side peripheral portion of the member, the proof strength against the stress Fh in the horizontal direction increases, and the proof strength against the tension Ft acting in the direction to separate the jointed surface increases.

According to the invention described in claim 2,
Since the reinforcing plate 3 is joined to the finger surface 5 and is fixed to the pin 9 at the joining portion of the members, the proof strength against the stress Fh in the horizontal direction and the joining surface are to be separated. The yield strength against the tension Ft acting in the direction is further increased.

Further, according to the invention described in claim 3, since the reinforcing plate 3 is joined to the member by the finger joint 2, the strength against the stress Fh in the horizontal direction and the joining surface are separated. The proof stress against the tension Ft acting in the direction of increasing further increases. Therefore, a cross-section loss of the laminated member 1 as a member is small, and a seamed structure of members having high yield strength in all directions can be realized.

[Brief description of drawings]

FIG. 1 is a perspective perspective view showing a joining structure of members of the present invention.

FIG. 2 is a perspective perspective view showing a joining structure of members of the present invention.

FIG. 3 is a perspective view showing a state in which a jack is installed over the member joining structure of the present invention.

FIG. 4 is a perspective perspective view showing a joining structure of members of the present invention.

FIG. 5 is a perspective perspective view showing a joining structure of members of the present invention.

FIG. 6 is a partially enlarged view of a perspective view showing a conventional joining structure of members.

FIG. 7 is a perspective view showing a conventional seaming structure for a wooden structure.

[Explanation of symbols] 1 Laminated material 2 Finger joint 3 Reinforcement plate 4 Finger joint 5 Finger surface 6 Flat surface 7 Metal fitting 8 Core material 9 Pin 11 Small hole 12 Bolt hole 21 Finger single body 41 Finger single body 81 Pin hole 91 Screw 92 Nut B Adhesion Agent Fb Stress Fh Stress Ft Tension J Jack

Claims (3)

[Claims] 1. In a joint portion of members, the joint is jointed by a finger joint, and a small hole is provided in the joint surface in the longitudinal direction of the member. The inside of this small hole and the joint surface of the other member are the same. The core material is inserted so as to be positioned both inside and inside the small hole provided in, and the two joint surfaces are joined together, and the core material is fixed by a pin driven from the side peripheral portion of the member. A structure for joining members. 2. The member joining structure according to claim 1, wherein a reinforcing plate is joined to the finger surface at the joining portion of the members and is fixed to the pin. . 3. The reinforcing plate is joined to the member by finger joints.
A spliced structure of the described members.