JP2716412B2 - Column and foundation joint structure using laminated veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure between a column and a foundation using a laminated veneer material. More specifically, the present invention relates to a joint structure between a pillar and a foundation using a laminated veneer material, which can be joined with a wooden pillar to a foundation with high construction accuracy, and provides high strength and rigidity.

[0002]

2. Description of the Related Art Conventionally, when building a house, a store, or the like on a site with a narrow frontage, it is sometimes difficult to provide a wall at an opening at a portion facing a road. For example, as shown in FIG.
In some cases, entrances and garages are provided facing the road, and sleeve walls with a width of several tens of centimeters cannot be used. As described above, when there is no wall on one side of the building, the structure is extremely vulnerable to rolling in the event of an earthquake. In such a case, in order to support both ends of the beam with columns, it is necessary to form a rigid frame and at the same time to strengthen the joint between the column and the foundation.

FIG. 5 shows an example of a joint structure between a pillar and a foundation in a conventional wooden building. The joint structure between the pillar and the foundation has a large number of holes 4 in a base plate 3 in which holes 3a through which anchor bolts 2 implanted in the foundation 1 can be inserted are formed.
a is welded vertically, and a slit 5a into which a steel plate welded to the base plate can be inserted, and a hole 4a of the steel plate 4 below the pillar 5 made of laminated wood. A hole 5b for driving a drift pin is provided at a corresponding position, and a steel plate 4 is inserted into the slit 5a. The base plate 3 is fixed to the base 1 with the anchor bolts 2 and nuts not shown.
To be fixed.

[0004]

In the above-mentioned conventional joint structure between a column and a foundation, the positions of the hole 5b formed in the column 5 and the hole 4a formed in the steel plate 4 welded to the base plate 3 are determined. There is a problem that it is difficult to completely match them, and a part where the drift pin 6 cannot be driven occurs in the field work, resulting in poor construction accuracy.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to realize a joint structure between a column and a foundation using a single-layer laminated material which has no problem in construction accuracy and has good strength. .

[0006]

SUMMARY OF THE INVENTION In a joint structure between a column and a foundation using a laminated veneer material according to the present invention, a column in which long nuts are fixed to both side edges of a rectangular steel plate having a large number of nail holes. A rigid leg fitting is sandwiched between the columnar members of a plurality of columnar members using a laminated veneer, and is screwed to the long nut at the lower portion of the column formed by bonding using an adhesive. A base plate having a hole through which a bolt to be fitted and a hole through which an anchor bolt is inserted is connected by a bolt, and the base plate is fixed to a foundation by an anchor bolt.

[0007] In the joint structure between a column and a foundation using the laminated veneer of the present invention, anchor bolts extending downward from the bottom of the steel plate are fixed to both side edges of a rectangular steel plate having a large number of nail holes. The column base rigid connection metal is sandwiched in the lower portion between the columnar members of a plurality of columnar members using a veneer laminated material, and the anchor bolt of the column which is integrated by bonding is preliminarily based on the base. It is characterized in that it is inserted into the provided hole and fixed with a high-strength mortar.

Further, in addition to the above, the column base rigid metal fitting is fixed to a columnar member using a laminated veneer in advance by using both bonding and nailing.

[0009] With this configuration, the rigidity of the column base is fixed in advance to the column composed of a plurality of columnar members of the veneer laminated material by nails and bonding, so that there is no problem in the construction accuracy at the site.
In addition, a strong connection between the pillar and the foundation can be achieved.

[0010]

FIG. 1 is a perspective view showing a first embodiment of the present invention. As shown in the figure, the joint structure between the column and the foundation according to the present embodiment is such that the column 10 has a rigid column base below the three columnar members 11, 11 ', 11 "made of a single-layer laminated material. The right and left columnar members 11, 11 "are formed with concave portions on the side surfaces of the right and left columnar members 11, 12" for receiving the column base rigid connection members 12, 12 '. A work space for screwing a nut to an anchor bolt is provided at a lower portion of the central columnar member 11 '.

As shown in FIG. 2, the column base rigid fittings 12 and 12 'are formed on a rectangular steel plate 12a, long nuts 12b are provided on both side edges of the longitudinal end thereof, and the longitudinal direction is formed on the longitudinal direction of the steel plate 12a. It is welded and fixed in parallel, and a number of nail holes 12c are formed in the steel plate 12a. The column base rigid fittings 12 and 12 'are fixed to the column members by an adhesive and nails 13 before joining the column members.

The columnar members 11, 11 ', 11 "
The veneer laminated material used in (1) is obtained by laminating and bonding a plurality of veneers made of wood (logs) by rotary cutting with the fiber directions thereof aligned in the same direction.

The base plate 14 is a rectangular steel plate having substantially the same size as the lower surface of the column 10, and has a hole 14a through which a bolt can be inserted at a position corresponding to the long nut 12b of the column base rigid fittings 12, 12 '. A hole 14b is drilled in the center, through which an anchor bolt can be inserted.

The base plate is screwed to the long nut 12b of the column base rigid fitting through the hole 14a by the two flat head bolts 15. In addition, column base rigid fitting 1
The base plate 14 connected to the column 10 via the bases 2 and 12 'is provided with an anchor bolt 17 embedded in the foundation 16 in the hole 1.
4b, and is fixed on the foundation 16 by a nut 18.

The joint structure between the column and the foundation using the laminated veneer according to the present embodiment constructed as described above is a column base rigid joint 1
Before bonding the column members 2 and 12 'to the three column members 11, 11' and 11 ", the column base member is fixed to the column members with an adhesive and nails. Since only the connection is made by the four bolts 15, the work is extremely easy and sufficient strength can be obtained.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention. As shown in the figure, the joint structure between the pillar and the foundation according to the present embodiment is such that the pillar 10 is made of a single-plate laminated material.
The columnar members 11, 11 ′, 11 ″ are fixed to the lower portion between the columnar members 11, 11 ′, 11 ″ with two column base rigid fittings 20, 20 ′ therebetween.

The column base rigid fittings 20, 20 'are formed with a large number of nail holes 2.
Anchor bolts 23 extending downward from the bottom side of the steel plate 22 are welded and fixed to both side edges of the rectangular steel plate 22 in which 1 is formed. The column base rigid fittings 20, 20 'are fixed to the column member in advance by an adhesive and nails 24 before the column member is bonded.

The base 25 is provided with a hole 26 for fixing an anchor bolt. Then, the hole 26 is filled with a grout material 27 (a non-shrinkable early-strength mortar for filling), and before the grout material 27 is solidified, the anchor bolt 23 fixed to the column 10 is inserted, so that the grout material 27 is solidified. The pillar 10 is supported by temporary brazing until the grout material 27 is solidified.

In the present embodiment having the above-described structure, since the stress is dispersed as compared with the conventional steel plate-inserted drift pin joint, splitting of the wood is prevented, and both the proof stress and the rigidity are high. In addition, since it is configured to be tied directly to the foundation without the intervention of the base plate, it is easy to absorb construction errors, and the cost of steel materials can be reduced.

In the first and second embodiments, three columnar members are used. However, the number of columnar members is not limited to three, and may be two or four or more. It is necessary to adjust the number of fittings.

[0021]

According to the joint structure of the column and the foundation using the laminated veneer of the present invention, the column base rigid connection between the columnar members of the plurality of columnar members using the laminated veneer. The workability is better than the conventional drift pin driving by sandwiching and bonding by gluing, and the strength and rigidity are high because it can prevent the splitting of wood. It can contribute to improvement of earthquake resistance.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIGS. 2A and 2B are views showing a column base rigid fitting used in the embodiment of the present invention, wherein FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. is there.

FIG. 3 is an exploded perspective view showing a second embodiment of the present invention.

FIG. 4 is a plan view showing a conventional narrow-width wooden building.

FIG. 5 is an exploded perspective view showing one example of a conventional joint structure between a pillar and a foundation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... pillar 11, 11 ', 11 "... pillar-shaped member 12, 12', 20, 20 '... pillar base rigid-fitting 13, 24 ... nail 14 ... base plate 15 ... countersunk bolt 16, 25 ... foundation 17, 23 ... Anchor bolt 18 ... Nut 26 ... Hole 27 ... Grout material

Claims (3)

(57) [Claims] 1. A column base rigid joint having long nuts fixed to both side edges of a rectangular steel plate having a large number of nail holes, and a lower portion between each columnar member of a plurality of columnar members using a single-layer laminated material. And a base plate having a hole through which a bolt to be screwed into the long nut and a hole through which an anchor bolt is inserted is connected to the lower part of the column formed by bonding and bonding with an adhesive, using a bolt. Characterized by being fixed to a foundation with anchor bolts, the joint structure between a column and a foundation using laminated veneer. 2. A column-shaped rigid metal fitting having anchor bolts extending downward from the bottom of a rectangular steel plate having a large number of nail holes and fixed to both side edges of the steel plate. It is characterized in that the anchor bolt is inserted into a hole provided in the foundation in advance and fixed with a high-strength mortar, sandwiching the lower part between the columnar members of the member, bonding and integrating the pillars. Structure of pillar and foundation using laminated veneer. 3. The laminated veneer according to claim 1, wherein the column base rigid joint is fixed in advance to a columnar member using a laminated veneer by using both bonding and nailing. Joint structure of pillar and foundation using.