JP2711162B2 - Column and beam joint structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a joint structure used for joining a wooden column and a beam.

"Prior art" Conventionally, when joining wooden columns and beams, it is common to employ a method of tenoning the joints and fitting them together.
In some cases, joint fittings (for example, vane plate bolts, etc.) are used together with mortise processing or used alone.

The above-mentioned joint fitting is usually attached to the periphery of the joint of the column or the beam by bolts or nails so as to be exposed to the outside.

"Problems to be solved by the invention" However, in the above-mentioned conventional fittings,
Because it is a structure that can be exposed to the outside, it may be exposed to high heat in the event of a fire and deteriorate.
At that time, the predetermined strength cannot be maintained.

In addition, since it is exposed to the outside as described above, there is a problem in rust prevention, and there is a possibility that rust will occur during use for many years and a predetermined strength will not be obtained.

The present invention has been made in view of the above circumstances, and has focused on the fact that recently used large-sized columns have a laminated column structure such as a glued laminated lumber. It is an object of the present invention to provide a joint structure between a column and a beam, which can be embedded in the joint and can solve the above-mentioned problem.

"Means for solving the problem" In the present invention, in order to achieve the object, through a joint fitting embedded and fixed inside a wooden mating column configured by joining the left and right column halves to each other. A structure for connecting a column and a beam, comprising a pair of plates having a T-shaped cross section including a substrate portion and a cross plate portion orthogonal to the substrate portion. When the both plate halves are joined to each other while being opposed to the joint surface and fixed to the left and right column halves of the mating column in a state where the cross plate portion is inserted into the vertical groove of the mating column, the substrate portion or At least one end of the cross plate portion is projected outward of the mating column,
At the tip of the protruding plate portion, a wooden beam is fitted and joined to a groove formed at an end of the beam.

[Operation] A pair of plates are fixed in advance to the joint surfaces of the two halves of the mating column, and most of the plates are embedded in the mating column when the plate halves are joined. On the other hand, the remaining plate portion protruding outside the mating column is fitted into the groove of the beam.

In this way, the joint fittings are all buried inside the columns or beams. For this reason, even if a fire occurs, the inside of the column or the beam is unlikely to be heated to a high temperature, and the joint fitting does not deteriorate and its strength is not lost.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing a joint structure according to the present invention and an arrangement relationship between columns and beams joined by the joint structure, and FIG. 2 is a perspective view after being assembled.

In these figures, reference numeral 1 denotes a wooden column, 2 denotes a wooden beam, and these are each formed by joining column halves 1A and 1B or beam halves 2A and 2B made of laminated wood. Reference numeral 3 denotes a wall panel between the columns 1 and connected above and below the beam 2, and reference numeral 4 denotes a joint fitting.

The joint fitting 4 is composed of a pair of plates 4A and 4B having a T-shaped cross section and including a substrate portion 5 and a cross plate portion 6 orthogonal to the substrate portion 5.

In both plates 4A and 4B, the substrate portion 5 is opposed to the joint surface 1a of the mating column 1 and the cross plate portion 6 is a vertical groove of the mating column 1.
The left and right column halves 1A and 1B of the mating column are inserted through 1b.
Are fixed respectively. In this case, the fixing is performed by using a plurality of nails 7 protruding and fixed to the substrate portion 5 toward the crossing plate portion 6 in the drawing, but the present invention is not limited to this, and other means such as an adhesive may be used. Can also be used. In addition, a flat recess 1c is previously formed on the joint surface 1a of the column 1, and when the substrate portion 5 of the plates 4A and 4B is fitted into the recess 1c, the upper surface of the substrate portion except the recess 1c is formed. It is set to be flush with other parts of 1a.

Here, the lengths l ₁ and l ₂ of the substrate portion 5 and the intersecting plate portion 6 on the protruding side of both plates 4A and 4B are determined when joining the column halves 1A and 1B to which the plates 4A and 4B are fixed. In addition, one end of the substrate portion 5 and the ends of both the cross plate portions 6 are set so as to protrude outside the mating column 1. Thus, one of the substrate portions 5
The reason why the length of the intersecting plate portion 6 is set is to join the beams 2 extending in three directions to the column 1 in this embodiment, and the joining beams 2 are aligned on the same line or perpendicular to each other. When extending in two directions or in four directions, it is necessary to appropriately change the lengths of the substrate portion 5 and the cross plate portion 6 accordingly.

The thickness t ₁ of the substrate 5 is set to be half of the thickness t ₂ of the cross plate 6. This is because the crossing plate portion 6 constitutes a connection portion with the beam 2 by itself, but the substrate portion 5 constitutes a connection portion with the beam 2 only when two sheets are overlapped.
This is because the fitting groove 12 of the beam 2 to be joined together has the same shape as the three beams.

Reference numeral 9 denotes a bolt insertion hole formed in the substrate portion 5, which is formed at a line symmetric position so as to match both the plates 4A and 4B. Bolt insertion holes 10 are also formed in the column halves 1A and 1B at positions corresponding to the insertion holes 9.

Further, a plurality of (three in the figure) bolt insertion holes 11 are formed in a portion of the substrate portion 5 and the cross plate portion 6 which protrudes outward from the pillar 1 when attached to the pillar 1 in the vertical direction. . Of these bolt insertion holes, the central hole 11a is a long hole extending in the lateral direction for position adjustment.

On the other hand, the structure of the beam end will be described. A groove 12 is formed in the beam end, and the tip of the substrate 5 or the cross plate 6 projecting outward from the column 1 is fitted into the groove 12. Thus, the column 1 and the beam 2 are joined. The fitting groove 12 is formed as follows.

That is, a recess 13 is formed at the end of the joint surface between the beam halves 2A and 2B, and a metal flat plate 14 is fixed to the recess 13 via a nail 15 attached to the flat plate. This structure is the same for the left and right beam halves. One of the left and right plates 14 has L
When the left and right beam halves 2A and 2B are joined, the flat
The fitting groove 12 described above is formed therebetween. The height and width of the groove 12 are determined according to the size of the tip of the plate portion projecting from the column 1 of the plates 4A and 4B.

At the tips of the beam halves 2A and 2B and the flat plate 14, insertion holes 17 and 18 corresponding to the bolt insertion holes 11 of the joint fitting 4 are formed, respectively. In particular, the insertion hole 17a at the center in the vertical direction of the flat plate 14, corresponding to the hole 11a for position adjustment,
It is a long hole extending long in the vertical direction.

Next, a method of joining the column 1 and the beam 2 using the joint fitting 4 will be described.

First, at the factory etc., both plates 4A and 4B
Are fixed to the column halves 1A and 1B using nails 7, respectively.
At this time, care is taken so that the insertion holes 10 of the column halves 1A and 1B and the insertion holes 9 of the plates 4A and 4B are coaxial. Then, tightened with a nut from the opposite side through the bolt B ₁ in their insertion holes 9, 10. Thereby, the column 1 having a square cross section can be obtained. Also, at this time, one of the substrate portions 5 of the joint fitting 4 and the tip of the cross plate portion 6 protrude from the column 1.

Next, the wall panel 3 is erected between the columns 1, and the beam 2 formed by joining the halves 2A and 2B together in advance is attached to the upper side of the erected wall panel 3. At this time, before dropping both the normal position, and integrally tightened by a nut for a time bolts fall prevention at the beam upper through vertical through-bolts B ₃ to both (not shown) at the upper position, this Drop in the state. At the same time, the tip of the plate of the joint fitting 4 projecting from the column 1 is fitted into the groove 12 formed at the end of the beam.

After that, the matching insertion hole 1 of beam 2 and fitting 4
To 8 and 11 through the bolt B ₂ from one side of the beam tip, tightened with a nut from the opposite side. In this case, first, middle ones of the upper and lower threefold bolt B ₂ (where the bolt it is preferable to use a high-tension bolt) was temporarily fixed, orthogonal to each other are provided on both joint fitting 4 and the flat plate 14 Slots 11a, 1
The beam 2 is moved up, down, left, and right using 7a to align the upper and lower bolt insertion holes 17 (18), 11 so that they match, and the bolts are passed through the aligned insertion holes 17, 11, and fixed.

The above-described joining operation of the beams 2 is performed for each of the three beams.

Furthermore, the wall panels 3 is raised above the fixed beam 2, the upper and lower wall panels 3 and fixed by using the through bolt B ₃ which passes through the beam 2 that exists between them.

By the above procedure, the pillar 1, the beam 2, and the wall panel 3 attached to the beam can be assembled.

“Effects of the Invention” As described above, the present invention has the following excellent effects.

Since all fittings are buried inside columns or beams, they are not exposed to high heat in the event of a fire and do not deteriorate due to deterioration.

Further, it is preferable in terms of rust prevention, quality can be maintained for a long period of time, and durability of the joint is improved.

Since the wooden columns and beams are connected by fittings that can be made of a strong metal material such as steel, a strong connection can be realized as a result.

By effectively using the structure of the mating column, the joint fitting can be fixed in a buried state inside the column.

[Brief description of the drawings]

The drawings show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a joint fitting and columns and beams connected thereby, and FIG. 2 is a perspective view of a joint connected by the joint fitting. 1 ... pillar (matching pillar) 1A, 1B ... pillar half 1a ... fitting face 1b ... vertical groove 2 ... beam 2A, 2B ... beam half 3 ... wall panel 4 ... joint fitting 4A 4B Plate 5 Board part 6 Cross plate part 11 Bolt insertion hole 12 Groove B ₁ , B ₂ , B ₃ Through bolt

Claims (1)

(57) [Claims] 1. A structure for connecting a column and a beam via a joint fitting embedded and fixed inside a wooden mating column formed by joining left and right column halves to each other. A pair of plates having a T-shaped cross section including a crossing plate portion orthogonal to the substrate portion, wherein the two plate portions have the substrate portion opposed to the joining surface of the mating column and the crossing plate portion forms a vertical groove of the mating column. When the two pillar halves are fixed to the left and right pillar halves of the mating pillar in the inserted state, at least one end of the substrate portion or the cross plate portion is located outside the mating pillar. A wooden beam is fitted to and joined to a groove formed in an end of the beam at the tip of the protruding plate portion.