JPH08232342A - Joint structure for column and beam - Google Patents

Abstract

PURPOSE: To simplify a construction procedure at a field by making it easier to avoid an interference of a stop bolt for a supporting fixture, in a column while keeping a mounting strength. CONSTITUTION: A supporting fixture 12 is bent in such a manner that insertion surface portions 2 are normal to a pair of vertical sides of a mounting surface 1 for a column 5 so that the fixture 12 has an approximately U-shaped transverse cross section, and a bottom plate 13 is formed at the lower sides of the portions 2 to support the underside of an end of a beam. A groove 15 having a size corresponding to the size of the surface 1 is provided beforehand in a side surface of the column 5 so that the depth of the groove is slightly larger than the thickness of a head of each stop bolt 4 for fixing the fixture 12. After the fixture 12 is put into the groove 15 and fixed by means of the bolts 4, if slit grooves 7 are fitted onto the fixture 12 from above, the plate 13 supports the underside of an end of the beam 6, in a temporarily fixing state, and thereafter through pins 16 are inserted into through holes 8, 14 to join the column and the beam.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention relates to a joint structure of a column and a beam, in which a beam end face is surface-joined to a side face of a column with a support metal fitting, for the purpose of improving workability of a wooden frame construction method.

[0002]

2. Description of the Related Art A conventional joining structure as described above is shown in FIG. That is,
A support metal fitting 3 having a mounting surface 1 on the side surface of the pillar and an insertion surface portion 2 orthogonal to the mounting surface 1 is mounted on the pillar 5 by a plurality of fixing bolts 4, and the slit groove 7 provided above and below the end surface of the beam 6 After inserting the insertion surface 2,
Two or three penetrating pins 8 are passed through both side surfaces of the beam 6 and the insertion surface 2, and the raw material is pre-processed at the factory, eliminating the manual finishing process at the site and productivity. And the workability are improved. Further, the insertion surface portion 2 is provided with a notch 9 opened upward, and when the beam 6 is assembled to the support fitting 3, the topmost penetration pin 10 is first passed through,
The beam 6 is lowered from above the support fitting 3 and temporarily fixed, and then the remaining penetrating pins 11 are inserted. In addition, in this figure, one insertion surface portion 2 is shown, but there are also two insertion surface portions having a substantially U-shaped cross section in order to secure strength.

In such a joint structure, if the vertical length of the support fitting and the number and thickness of the fixing bolts are increased according to the load received by the beam, a mounting strength more than necessary and sufficient can be obtained.
There are no strength problems at the individual joints. However, in places where multiple support fittings are provided at the same height on the three or four sides of one pillar, the retaining bolts interfere with each other inside the pillar, so the number of mounting bolts should be minimized or thin. Although it is easy to avoid the above interference when adopted, this is not a good idea in terms of securing the strength of the joint structure.

[0006] Further, although it is possible to temporarily fix one end of each beam without holding the both ends in a precisely aligned state, the beam can be joined at the joint portion though the ease of erection work is taken into consideration. The work had to be done by passing the top penetrating pin through the beam in advance before it was lifted up to 1, which was a cause of increasing the construction procedure on site.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it easy to avoid the interference of the support fixture stop bolt inside the pillar while securing the mounting strength, and to simplify the construction procedure on site. The purpose is to provide a joint structure of columns and beams that can

[0006]

SUMMARY OF THE INVENTION According to the present invention, in a column-to-beam joining structure in which a beam end face is joined to a side face of a column with a support fitting interposed therebetween, the support fixture is provided in a groove formed in the side face of the pillar. It is fitted so that it can be attached while supporting the lower part of the support bracket.

The support fitting has a mounting surface on the side surface of the column, and an insertion surface portion that is combined with slit grooves provided orthogonally to the mounting surface and extending above and below the beam end surface. A receiving means for supporting the lower surface of the beam end is provided.

[0008]

[Function] Since the support fitting is fitted in the groove so that the groove further supports the lower portion of the support fitting, the support fitting is held by the pillar in addition to the fixing force of the stop bolt, and the amount of the tightening bolt is reduced accordingly. The diameter can be reduced, and the number can be reduced in some cases. When the beam is attached to the support metal fitting, even if there is no retaining bolt, the support metal fitting will surely stay in the groove and engage the beam with the pillar, so that the support metal fitting should be installed in the groove. It is very preferable in terms of dispersion of fixing force. In addition, since the work of forming the groove on the side of the pillar is performed by machining the raw material at the factory, it does not impair the workability at the site and the head of the fixing bolt that fixes the support metal fittings. If the depth of the groove is set so that does not jump out of the groove, the head of the stop bolt does not interfere with the beam end surface,
It is not necessary to form a "relief" on the beam end face side,
The total processing cost does not increase the processing cost.

Further, since the insertion surface portion is provided with the receiving means for supporting the lower surface of the beam end portion, the beam end portions can be placed one by one on the support fitting without any work such as inserting a pin in advance. The construction procedure can be further omitted. In this case, as the receiving means, a bottom plate provided below the support fitting, a flange bent on the insertion surface portion, or a pin-shaped object standing or erected on the insertion surface portion is preferable in terms of ease of forming the support fitting. Furthermore, a recessed portion that is recessed upward is provided on the lower surface of the beam end, and in the recessed portion, an inclined surface that comes into contact with the bottom plate, the flange, and the pin and presses the beam end face against the column side surface, that is, on the column side. By providing an inclined surface that goes down toward the bottom, when temporarily fixing the beam, the side surface of the column and the end surface of the beam come into close contact, and it becomes easier to keep the installation angle between the beam and the column close to the design value.
The whole frame work becomes easier. When the bottom plate or the flange is brought into contact with the inclined surface, the bottom plate or the flange is provided with at least an inclined portion that descends toward the mounting surface so as to correspond to the inclined surface.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. The parts common to the conventional example and the parts common to the respective embodiments are designated by the same reference numerals, and the duplicated description will be omitted.

First Embodiment: FIG. 1 shows a first embodiment. Each of the support fittings 12 is formed by bending the pair of vertical sides of the mounting surface 1 on the pillar 5 so that the insertion surface portions 2 are orthogonal to each other, and is formed into a substantially U-shaped cross section. A bottom plate 13 as a receiving means for supporting the lower surface of the beam end portion is formed on the lower side of both insertion surface portions 2. In this example, the bottom plate 13 is also connected to the lower side of the mounting surface 1 to enhance the overall strength of the support fitting 12. The insertion surface 2 has a through hole 8 on the side surface of the beam 6.
Through holes 14 are provided so as to correspond to. On the side surface of the pillar 5, there is a groove 15 of a size corresponding to the size of the mounting surface 1,
As shown in FIG. 2, the depth B is slightly larger than the thickness A of the head of the fixing bolt 4 for fixing the support fitting 12,
It is formed in advance at the raw material processing factory. After the support fitting 12 is dropped into the groove 15 and fixed with the fixing bolt 4 so that the lower part of the support fitting 12 contacts the inner peripheral surface C on the lower side of the groove portion 15, the slit groove 7 is fixed to the support fitting 12. When inserted from above, the bottom plate 13 receives the lower surface of the end of the beam 6,
It is temporarily fixed in that state. After that, the through pin 16 is inserted into the through holes 8 and 14 and joined.

Second Embodiment: FIG. 2 shows a second embodiment. On the lower side of the insertion surface portion 2 of the support metal fitting 17, flanges 18 as receiving means for supporting the lower surface of the beam end portion are bent and formed to face each other, and when the support metal fitting 17 is fixed in the groove portion 15, one of the flanges 18 is formed. The portion contacts the lower inner peripheral surface C of the groove portion 15. Further, in this embodiment, between the slit grooves 7 on the end face of the beam 6, there is formed a projecting portion 19 projecting about 5 mm from other portions, and the groove portion 15
Has a depth B of approximately 5 mm at the head thickness A of the fixing bolt 5. Therefore, since the protruding portion 18 is inserted into the groove portion 15 at the time of joining, a more reliable joining state can be obtained. Although not particularly shown, since the protrusion 18 interferes with the side surface of the pillar 5 above the support fitting 17 at the time of joining to the pillar 5, an introduction groove is provided in the side surface of the pillar 5 where the interference can occur. It is more preferable that the groove 19 is easily inserted into the groove 15.

Third Embodiment: FIG. 3 shows a third embodiment. The inclined bottom plate 21 provided on the lower portion of the supporting bracket 20 having a substantially U-shaped cross section is provided so as to descend toward the pillar 5. Further, the lower surface of the end portion of the beam 6 has a recessed portion 23 having an inclined surface 22 angularly and positionally corresponding to the inclined bottom plate 21.
Are formed. Therefore, when the slit groove 7 of the beam 6 is inserted from above the support fitting 20 at the time of joining, the inclined bottom plate 21
And the inclined surface 22 are in contact with each other, the beam end surface 2
4 is temporarily fixed in a pressed state. That is, since the beam end face 24 and the pillar 5 are combined at an angle according to the design value at the time of processing the raw material, the workability of the entire wooden frame is improved. In addition, in this example, the recessed portion 23 is provided only between the slit grooves 7, but it may be provided over the entire width of the beam 6, and the angle and length of the inclined surface 22 significantly increase the strength of the beam 6. It can be appropriately set as long as it is in a state where it is not lowered and the pressing force to the pillar side can be obtained by contacting the inclined bottom plate 21. The inclined bottom plate 21 may be further connected to the lower side of the mounting surface 1 via a horizontal plane, or the flange 18 of the second embodiment may be inclined like the inclined bottom plate 21.

Fourth Embodiment: FIG. 4 shows a fourth embodiment. In this example, a support pin 26 as a receiving means is provided between the insertion surface portions 2 of a support metal fitting 25 having a substantially U-shaped cross section, and at the time of connection, the support pin 26 is in contact with the inclined surface 22 of the recessed portion 23 and the pillar 5 side. The beam end face 24 is pressed against the beam. The support pin 26 may be one in which a rotatable roller is rotatably supported, and the bottom plate 13 of the first embodiment may be provided below the support fitting 25.

In each of the above embodiments, the support fitting 1
The description has been given assuming that 2, 17, 20, and 25 have a substantially U-shaped cross section and two insertion surface portions 2 each.
The character-shaped insertion surface portion may be one, or may be three or more.

[0016]

As described above, according to the present invention, since the support fitting is supported on the pillar not only by the stop bolt but also by the groove portion provided on the side surface of the pillar, a thinner stop bolt can be used. Depending on the case, the number can be reduced depending on the case, and it becomes easy to avoid the interference of the fixing bolt inside the pillar while securing the mounting strength. In addition, there is no need to insert a pin in advance before the beam is lifted to the planned joining portion of the column, so that there is an effect that the work procedure at the site becomes simple. Further, at the time of joining, the pillar side surface and the beam end surface can be assembled in a pressed state, and there is an effect that the workability of the entire frame assembly is good.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a column-beam joint structure according to the present invention.

FIG. 2 is a plan view showing a second embodiment.

FIG. 3 is a side view showing a third embodiment.

FIG. 4 is a side view showing a fourth embodiment.

FIG. 5 is a perspective view showing an example of a conventional column-beam joining structure.

[Explanation of symbols]

 1 Mounting Surface 2 Insertion Surface 5 Pillar 6 Beam 7 Slit Grooves 12, 17, 20, 25 Support Fitting 13 Bottom Plate (Receiving Means) 15 Groove 18 Flange (Receiving Means) 19 Projection 21 Sloping Bottom 23 22 Inclined 23 Depression 24 Beam End face 26 Support pin (receiving means)

Claims (6)

[Claims] 1. In a column-beam joining structure in which a beam end surface is joined to a side surface of a column with a supporting metal fitting interposed therebetween, the supporting metal fitting is fitted into a groove formed in the side surface of the pillar to support a lower portion of the supporting metal fitting. A joint structure of columns and beams that is installed in a closed state. 2. The support fitting has a mounting surface to the side surface of the column, and an insertion surface portion that is combined with a slit groove that is orthogonal to this mounting surface and is provided above and below the beam end surface. The column-beam joint structure according to claim 1, further comprising receiving means for supporting a lower surface of the beam end portion. 3. The column-to-beam connection according to claim 2, wherein the lower surface of the beam end portion is provided with a recess having an inclined surface that is in contact with the receiving means of the support fitting and presses the beam end surface against the column side surface. Construction. 4. The column-beam joint according to claim 2, wherein the insertion surface portion is bent and formed on a pair of vertical sides of the mounting surface, and the receiving means is a bottom plate or a flange formed on the lower side of both insertion surface portions. Construction. 5. The column-beam joint structure according to claim 2 or 3, wherein the insertion surface portion is bent and formed on a pair of vertical sides of the mounting surface, and the receiving means is a support pin provided below both insertion surface portions. . 6. The column-beam joint structure according to claim 1, wherein a portion of the beam end face corresponding to the groove portion on the side surface of the column is formed to project into the groove portion.