JPH03206225A - Junction structure of pole and beam - Google Patents

Abstract

PURPOSE:To enhance the junction strength and durability of a wooden coupled pole and a wooden beam by embedding joint fitting of roughly cruciform section in the wooden coupled pole, and projecting some ends of the plate-shaped members of the joint fittings outward, and fitting the ends in the channels of the wooden beam. CONSTITUTION:Joint fittings 4 are comprised of plate-shaped members 5, 6 coupled together in such a manner as forming roughly cruciform section. The joint fitting 4 are embedded in a wooden coupled pole 1 comprising right and left half-pole bodies 1A, 1B joined to each other, and some ends of the plate- shaped members 5, 6 are projected outwardly from the pole 1. The projecting ends of the plate-shaped members 5, 6 are fitted in channels 12, 12 formed at the end portion of a wooden beam 2... and through bolts B1 to B3 are passed through the beam 2... from one side of the beam 2 and fastened so that the pole 1 and the beam 2... are joined to each other. Deterioration of the joint fittings 4 is thereby prevented over a long period and even in case of fire etc., so as to maintain the junction strength of the pole and the beam.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a joint structure for joining wooden columns and beams using joint fittings buried inside them.

``Conventional technology'' Conventionally, when joining wooden pillars and beams, the common method was to tenon the joints and fit them together.
In some cases, joint fittings (for example, battledore bolts, etc.) are used together with tenon processing or used alone for joining.

The above-mentioned joint fittings are usually attached to the outside by bolts or nails around the joints of columns or beams in an exposed state.

``Problems to be Solved by the Invention'' However, in the above-mentioned column-to-beam joint structure using the conventional joint fittings, the joint fittings are attached to the outside in an exposed state, so in the event of a fire, the joints cannot be removed. There is a risk that the metal fittings will deteriorate due to exposure to high heat. At that time, a predetermined strength cannot be maintained.

Furthermore, since the joint fittings are exposed to the outside as described above, there is a problem in terms of rust prevention, and there is a risk that the joint fittings will rust during long-term use, making it impossible to obtain a predetermined joint strength.

The present invention has been made in view of the above circumstances, and focuses on the fact that the large columns that have been used recently have a laminated column structure such as gluing materials, and by making good use of this laminated column structure, it is possible to create joint fittings. The purpose of this invention is to provide a column-to-beam joint structure that can solve the above-mentioned problems by embedding the column inside the column.

"Means for Solving the Problem" In the present invention, in order to achieve the above object, a plate-like member is installed inside a wooden mating column constructed by joining the left and right half-shaped columns to each other. A joint fitting formed in a shape of a letter is buried, and the tips of some of the plate-like members of the fitting are projected outward from the pillar, and a wooden beam is attached to the tip of the protruding plate-like member. A groove is fitted into the end of the hole, and the hole is joined by bolts from the side.

"Operation" Most of the joint fitting is embedded inside the dowel column, and the remaining part of the joint fitting, which protrudes outward from the dowel column, is fitted into the groove of the beam.

In this way, all the joint fittings will be buried inside the column or beam. Therefore, even if a fire occurs,
Since the inside of a column or beam is not susceptible to high temperatures, the joint metal fittings do not change in quality and do not lose their strength.

In addition, there is no need to perform troublesome tenon processing on the joints of columns and beams, and a strong connection can be achieved with a simple fastening method using bolts.

"Example" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view of a column-beam joint structure according to the present invention, and FIG. 2 is an overall perspective view after assembly.

In these figures, numeral 1 indicates a wooden column and 2 indicates a wooden beam, both of which are column halves IA and IB made of glued lumber.
Alternatively, the beam halves 2A and 2B may be joined together. Reference numeral 3 indicates a wall bar between the columns 1 and connected to the upper and lower sides of the beam 2, and 4 indicates a joint fitting.

The joint fitting 4 has a generally cross-shaped cross section as a whole, and specifically has a T-shaped cross section that includes two members, namely a base plate 5 and a cross plate part 6 perpendicular to the base plate 5. It consists of a pair of plates 4A and 4B.

Both brakes 1-4A and 4B have the base plate portion 5 facing the joint surface 1a of the mating column 1, and the intersecting plate portion 6 facing the mating column 1.
is inserted into the longitudinal groove 1b of the column, and is fixed to the left and right column halves IA and IB of the mating column, respectively. In the figure, fixation at this time is performed using a plurality of nails 7 fixed to the base plate 5 so as to protrude toward the cross plate 6, but the fixation is not limited to this, and other means such as adhesive may be used. It can also be done using Further, a flat plate-shaped recess 1c is formed in advance on the joint surface 1a of the pillar 1, and when the substrate portion 5 of the plates 4A, 4B is fitted into this recess 1c, the upper surface of the substrate portion is the joint surface excluding the recess 1c. It is set so that it is flush with other parts of the.

Here, the substrate portion 5 on the protruding side of both plates 4A, 4B
and the lengths l1 and h of the intersecting plate portion 6 are the lengths l1 and h of the plate 4
When joining the pillar halves IA, 1B to which A, 4B are fixed, one end of the base plate part 5 and the ends of both intersecting plate parts 6 are set so as to protrude outward from the mating pillar 1. ing. In this embodiment, the lengths of one of the substrate parts 5 and the intersecting plate part 6 are set in order to respectively join the beams 2 extending in three directions to the column 1. but,
When extending in two directions so as to be on the same line or orthogonal to each other, or when extending in four directions, it is necessary to change the lengths of the base plate part 5 and the intersecting plate part 6 as appropriate.

Further, the thickness i of the substrate portion 5 is set to be half the thickness t of the cross plate s6. This is because the cross plate portion 6 alone constitutes the joint portion with the beam 2, but the base plate portion 5 constitutes the joint portion with the beam 2 only after two sheets are overlapped.
This is to make the fitting l112 of the beams 2 to be joined together the same shape on all three sides.

Reference numeral 9 denotes bolt insertion holes formed in the base plate portion 5, which are shaped at line-symmetrical positions so as to match both plates 4A and 4B. Bolt insertion holes 10 are also formed in the column halves IA, 1B at positions that match the insertion holes 9.

Further, a plurality of bolt insertion holes 11 (three in the figure) are formed in the vertical direction in the parts of the base plate part 5 and the cross plate part 6 that protrude outward from the pillar 1 when attached to the pillar 1. . Among these port insertion holes, the central hole 11a is an elongated hole extending laterally for position adjustment.

On the other hand, to explain the structure of the beam end, a groove l2 is formed in the beam end, and the tip of the base plate part 5 or the cross plate part 6 protruding outward from the column 1 is fitted into this groove 12. By doing so, the column 1 and the beam 2 are joined. The fitting groove l2 is shaped as follows.

In other words, there is a recess 1 at the tip of the joining surface of the rice cake halves 2A and 2B.
3 is formed, and a metal flat plate 14 is fixed to this recess 13 via a nail l5 attached to the flat plate. This structure is the same for the left and right beam halves. An L-shaped receiving metal fitting 16 is welded to one of the left and right flat plates 14, thereby joining the left and right beam halves 2A and 2B. The above-mentioned fitting *12 is formed between the flat plates 14. The height and width of the groove l2 are determined by the plate 4A,
It is determined in accordance with the size of the tip of the plate portion protruding from the pillar 1 of 4B.

The ends of the beam halves 2A, 2B and the flat plate l4 have insertion holes 17 corresponding to the bolt insertion holes 11 of the joint fittings 4 described above,
18 are each shaped.

Particularly, the insertion hole 17a in the center of the flat plate l4 in the vertical direction is a long hole extending in the vertical direction to correspond to the hole 11a for position adjustment.

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

First, both plates 4A and 4B of the joint fittings are prepared in advance at the factory etc.
are fixed to the pillar halves IA and IB using nails 7, respectively. At this time, care must be taken so that the insertion holes 10 of the pillar halves IA, IB and the insertion holes 9 of the plates 4A, 4B are coaxial. Then, pass the port B through the insertion holes 9 and 10 and tighten with a nut from the opposite side. Thereby, a column l having a square cross section can be obtained. Further, at this time, one side of the base plate portion 5 of the joint fitting 4 and the tip of the cross plate portion 6 protrude from the pillar 1.

Next, the wall panel 3 is erected between the pillars 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 of them into their normal positions, a vertical penetration hole L-B is attached to both of them at the upper position. At the top of the beam, tighten once with a nut (not shown) to prevent the bolt from falling, and drop it in this state. At the same time, the tip of the slope of the joint fitting 4 protruding from the column l is fitted into @12 formed at the end of the beam.

After that, the insertion hole 1 of the beam 2 and the fitting 4 are aligned.
8.1 In 1, pass Pol I-B from one side of the beam tip,
Tighten the nut from the opposite side. At this time, first, temporarily fix the center one of the three upper and lower ports B2 (it is preferable to use a high-tension bolt for this bolt), and then Move the beam 2 vertically and horizontally using the holes 11a and 17m, align the upper and lower bolt insertion holes 17 (18) and 1l so that they match, and insert the inserted holes 1
7. Pass the bolt through 1l and secure it.

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

Furthermore, the wall panel 3 is erected above the fixed beam 2,
The upper and lower wall panels 3 are fixed using the through bolt B3 that passes through the beam 2 existing 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 explained above, the present invention provides the following excellent effects.

■ All joint hardware is buried inside the pillar or beam, so it will not be exposed to high heat in the event of a fire, and will not deteriorate or lose strength.

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

■ Wooden columns and beams are connected using joints that can be made from strong metal materials such as steel, resulting in a strong joint.

■ Easy connection using bolts can be performed, shortening the construction period.

■ It can be widely applied to joining beams extending in four or three directions to a column, or beams extending in two directions parallel to or perpendicular to both sides of a column.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view of a joint fitting and a column and beam connected by it, and FIG. 2 is a perspective view of the joint after assembly. 1...Column (joint column) IA, IB...Column half 1a...Matching surface 1b...Vertical groove 2...Beam 2A, 2B...Half body 3...Wall panel 4...Joint fittings 4A, 4B...Plate 5...Base part ( Plate-like member) 6... Cross plate part (plate-like member) 11... Port insertion hole 12... Groove

Claims (1)

[Claims] A joint fitting made of a plate-shaped member having a substantially cross-shaped cross section is embedded inside a wooden mating column formed by joining the left and right column halves to each other, and the plate-like member of the joint fitting is Some have their tips protruding outward from the pillars, and a wooden beam is fitted into the groove formed at the end of the beam and joined by bolts from the side. A joint structure of columns and beams.