JP4008566B2 - Column and beam joint method for wooden buildings - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a column and beam joint method in a framework of a wooden building.
[0002]
[Prior art]
For example, in a conventional three-story wooden structure, a foundation is laid on a concrete foundation, and a pillar using square shaft material is erected on this foundation, and this pillar is added to the required height. At the same time, it is constructed by bridging beams for each floor using a square shaft material at a predetermined height position between the columns, and providing reinforcing braces at the diagonal positions between the columns and the beams.
[0003]
In the above-mentioned column addition, a splint is applied to the upper and lower pillar members, and the pillar member and the splint are connected by a joint that is fastened with bolts. Bonding by mortise is common, and various hardware is used together for reinforcement.
[0004]
[Problems to be solved by the invention]
By the way, the wood cut out from the raw wood has the property of shearing and breaking when subjected to external pressure, and the conventional shaft assembly using such wood has a limit in strength, and it is necessary to reinforce it by bracing. Therefore, there is a problem that the structure of the shaft becomes complicated and expensive.
[0005]
Therefore, the object of the present invention is to use a laminated material for the structure of the shaft assembly and to make the joint made of steel, thereby simplifying the shaft assembly structure and improving the strength, thereby reducing the cost of a three-story wooden building at low cost. The purpose is to provide a column and beam joint construction method that can be realized in Japan.
[0006]
[Means for Solving the Problems]
In order to solve the problems as described above, the present invention uses a column formed by using two plate-like column members using laminated material and two plate-like beam members using the same laminated material. Two steel plates and column-base joints with side plates on both sides of the plate portion sandwiched between two plate-shaped column members and fastened to the column members and fixing portions to the foundation at the bottom Steel plate provided with horizontal plates above and below the beam fastening plate portion sandwiched between the plate-like beam members and fastened with the beam material and sandwiched between the plate-like beam members. The pillars are erected by fastening the lower parts of the two plate-shaped column members between the side plates on both sides to the plate part of the column base joints fixed on the foundation. the two plate-like beam members to the beam coupling plate portion of the beam-column joint fittings fastened plate part between the plate-shaped pillar of the pillar, the upper and lower water It is obtained by employing the structure which is adapted for fastening in a state fit between the plates.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in the figure, the frame structure of the wooden building has a pillar 2 formed by using two plate-like column members 1 and 1 and a beam 4 formed by using two plate-like beam members 3 and 3 in the same manner. A beam member 5 provided between the columns 2, a steel column base joint 6 that fixes the lower part of the column 2 to the foundation, and a steel column support 7 that fastens the column 2 and the beam 4. The two plate-like column members 1 and 1 and the two plate-like beam members 3 and 3 are each formed using a strip-like laminated material.
[0009]
FIG. 6 shows a steel column base joint fitting 6 for fixing the column 2 to the foundation 8, a leg portion 10 having an H-shaped cross section is erected on the bottom plate 9, and a fixing portion 11 embedded in the foundation 8, Standing on the upper surface of the upper plate 12 provided at the upper end of the fixed portion 11, having a width equal to that of the plate-shaped column 1, sandwiched between two plate-shaped columns 1, 1, The plate portion 13 to be fastened and the side plates 14 provided on both sides of the plate portion 13 are formed. The bottom plate 9 of the fixing portion 11 is provided with bolt holes 15 for fastening to the anchors of the foundation 8, Anchor bolts 16 are fixed to the outer surface of the portion 10.
[0010]
Further, a bolt hole 17 for fastening the two plate-like column members 1 and 1 with bolts to the plate portion 13 and a nail driving hole 18 for fixing the plate-like column members 1 and 1 to the side plate are provided. Each is drilled.
[0011]
FIG. 7A shows a column beam joint 7 used to connect the column 2 and the first and second floor beams 4, and one of the plate portions 19 sandwiched between the two plate-shaped column members 1 and 1. A vertical plate 20 is provided on a side edge, a beam fastening plate portion 21 sandwiched between two plate beam members 3 and 3 is provided on the outer surface of the vertical plate 20, and horizontal plates 22 are provided above and below the beam fastening plate portion 21. Bolt holes 23 for fastening the plate-like column members 1, 1 to the plate portion 19, and bolt holes for fastening the plate-like beam members 3, 3 to the beam fastening plate portion 21. 24 are provided, and the horizontal plate 22 has a nail driving hole 25 to be fastened to the plate-like beam members 3 and 3.
[0012]
FIG. 7B shows a beam-column joint 7a used for connecting the upper end of the column 2 and the beam 4 on the third floor, and the basic structure is the same as that of the beam-beam bracket 7 described above, but the vertical structure is vertical. The plate 20 and the upper horizontal plate 22 are bent from a single steel plate.
[0013]
FIG. 7C shows a connection plate 26 used for the intermediate addition of the pillar 2, using a steel plate having a width equal to that of the plate-like pillars 1, 1, and bolt holes for fastening with the plate-like pillars 1, 1. 27 is provided.
[0014]
FIG. 8 shows a coupling structure of the column 2 and the beam member 5, and a column-girder joint bracket 29 fixed to the column 2 using a bolt 28 for fastening the column-beam joint bracket 7 used for coupling the column 2 and the beam 4. Is formed in a plane U shape using a steel plate, and two slits 31 are provided at the end portion of the beam member 5 to be inserted into the opposing plate 30 of the column beam joint fitting 29, and the end portion of the beam member 5 is joined to the column beam. The metal fitting 29 is coupled by a plurality of pins 32.
[0015]
Next, the construction method of the shaft structure will be described.
As shown in FIG. 1, a column base joining bracket 6 is arranged by embedding a fixing portion 11 at a position where the column 2 of the foundation 8 constructed using concrete is erected, and the column 2 is placed on the column base joining bracket 6. Stand up. The column 2 has a height of three floors by connecting the two plate-shaped column members 1 and 1 to each other and connecting the upper and lower plate-shaped column members 1 and 1 using a connection plate 26 and bolts. At the same time, a column beam joint 7 is fixed in advance at the beam coupling position of the column 2.
[0016]
The lower end of the column 2 is fixed to the column base metal fitting 6 by sandwiching the plate portion 13 between the two plate-like column members 1 and 1 and tightening the overlapping portion with a bolt and driving in a nail.
[0017]
Further, the column beam joints 7 and 7a may be fixed to the column 2 by inserting the plate portion 19 between the two plate-like column members 1 and 1 and fastening the insertion portion with a bolt.
[0018]
Next, as shown in FIG. 2, two plate-shaped beam members 3 and 3 are arranged on both sides sandwiching the plate portion 21 between the column beam joints 7 and 7a facing each other of the upright column 2, and the plate The end portions of the beam members 3 and 3 are overlapped with the plate portion 21, and the overlapping portion is fastened with bolts and nails, and the intermediate portions of the two plate beam members 3 and 3 are coupled with bolts with the spacer 33 interposed therebetween. To do.
[0019]
Further, when fixing the beam-to-column fittings 7 and 7a to the column 2, the column girder fittings 29 are fixed to the beam connecting surface of the column 2 and both ends of the beam 5 arranged between the columns 2 are connected to the columns. It connects with the girder joint metal fitting 29 with a pin 32.
[0020]
As a result, as shown in FIG. 3 to FIG. 5, a three-story wooden building framework can be constructed, and the column 2 has a structure in which two plate-shaped column members 1 and 1 are opposed to each other. A gap corresponding to the plate thickness of the plate portions 13, 19, etc. is formed between the opposing surfaces, and a similar gap is also formed in the case of the beam 4, and these gaps may be filled with a heat insulating material or other laminated material.
[0021]
In the above-mentioned frame structure, the column 2 and the beam 4 are formed of two laminated materials, so that the problem of shear failure due to external pressure can be solved, the column 2 is fixed on the foundation 8, and the column 2 and the beam 4 are fixed. Since steel plate fittings are used for the connection between the column 2 and the beam 5, the joint strength of each joint is improved, and the frame structure is excellent in seismic strength, reinforcing bracing, etc. Since the frame structure can be simplified, a three-story structure using a wooden structure can be put into practical use.
[0022]
【The invention's effect】
As described above, according to the present invention, a column formed using two plate-shaped column members made of laminated material, a beam formed using the same two plate-shaped column members, and a column base made of steel plate Using the joint bracket and the steel beam column beam joint bracket, the bottom of the two plate-shaped column members is fastened to the plate part of the column base joint bracket fixed on the foundation, and the column is erected. Two plate-shaped beam members are fastened to the beam fastening plate portion of the beam-to-column fitting with the plate portion fastened between the plate-shaped column members. In addition, the joint strength is improved by making each joint part steel, and as a result, the frame structure has excellent seismic strength and load bearing strength. Is possible.
[0023]
In addition, since the shaft structure has a sufficient strength due to the connection between the column and the beam and reinforcement such as bracing can be omitted, the structure of the shaft structure can be simplified, which is advantageous in terms of cost.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a state in which a pillar is erected on a foundation. FIG. 2 is an exploded perspective view showing coupling of beams and girders between columns erected on the foundation. FIG. 4 is a front view showing a state in which a shaft structure is built on a foundation. FIG. 5 is a side view showing a state in which a shaft structure is built on a foundation. FIG. 7A is a perspective view of a column beam joint for connecting a column and a beam, and FIG. 7B is a column beam joint for connecting a column and a beam. FIG. 8C is a perspective view of a connection plate used for adding pillars. FIG. 8 is an exploded perspective view showing a coupling structure of pillars and girders.
DESCRIPTION OF SYMBOLS 1 Plate-shaped column material 2 Column 3 Plate-shaped beam material 4 Beam 5 Girder material 6 Column leg joint metal fitting 7 Column beam joint metal fitting 7a Column beam joint metal fitting 8 Foundation

Claims (1)

The pillar (2) which forms with the two plate-shaped pillar using laminated wood (1), also be formed using the two plate-like beam members using laminated wood (3) beam (4 ) And the plate (13) sandwiched between the two plate-like pillars (1) and fastened to the pillar (1) on both sides of the side plate (14) and the lower part of the base (8) fixing part ( a steel plate column base metal joint provided with a 11) (6), two plate-shaped pillar (1) plate-like beam members to the plate portion (19) for fastening sandwiched by the columnar member (1) between (3) Steel beam column beam joint fittings ( 21) provided with horizontal plates (22) above and below the beam fastening plate portion (21) and the beam fastening plate portion (21) sandwiched between and fastened to the beam material (3). 7) , the lower part of the two plate-like column members (1) is placed between the side plate (14) on both sides on the plate part (13) of the column base fitting (6) fixed on the foundation (8). Settle Concluded in state upright pillars (2), the beam coupling plate portion of the column (2) of the plate-shaped pillar (1) Column joint device that the fastening plate part (19) between (7) ( 21) A wooden column and beam joint construction method in which two plate-shaped beam members (3) are fastened in a state of being fitted between upper and lower horizontal plates (22) .

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