JP2010077645A - Joint structure in wooden building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To directly abut the joint end of a brace on the cross end recessed corner of a column-horizontal member and prevent a screw head for fixing from projecting from the outside of the brace. <P>SOLUTION: The brace 7 and a column 6 are joined to each other through a generally L-shaped joint fitting 8 which comprises one piece 8a and the other piece 8b perpendicular to the same in plan view and having the respective surfaces through which a plurality of screw mounting holes are formed. The lower part of the sloped surface of the brace 7 which is opposed at an interval to the column 6 is set to the lower end of the joint fitting 8. The one piece 8a side of the metal joint fitting is fixed to the surface of the column 6 facing the brace 7 with a plurality of wood screw fixing devices 9, and the other piece 8b side thereof is fixed to the inner surface of the brace 7 with a plurality of wood screw fixing devices 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a joint structure in a wooden building, and more particularly to a joint structure between columns and braces.

  Bracing is a reinforcing material for preventing deformation of a frame caused by an earthquake or wind pressure in a wooden frame building, and includes compression bracing and tensile bracing. Of these, the compression bracing is butted at the corner of the junction end between the base and the trunk (or girder) at the lower end side and the corner of the joint (or girder) at the upper end side. The Conventionally, it has been attached via mounting hardware such as a bolt or a piercing penetrating between the pillar and the bracing.

  However, the bracing material thickness is approximately ½ of the cross-sectional dimension of the column, and the greater the width dimension, the greater the proof strength. However, the width dimension is set to the column because of the wall structure (both groundwork and finish). It is attached so that the outer side of the braces is flush with one side of the column. Therefore, when using the brazing, the brazing protrudes to the outer surface side of the braces and affects the wall surface configuration.

On the other hand, recently, for example, a joint fitting dedicated to bracing shown in Patent Document 1 below may be used. This metal fitting is fixed to each surface of the base-column-interlacing via a plurality of wood screw fixing tools, and is connected to one side of an angle member fixed in an L shape between the base-column. It is the structure which integrated the side plate fixed to the outer side surface.
JP 2001-24116 A

  However, according to the joint structure, the abutting ends of the braces are not in direct contact with the base-columns, but are in contact with each other through the pieces of the angle material, and therefore contact surfaces of each other due to vibration or the like. It is easy to lift and gaps. Moreover, since the wood screw is fixed to the outer side surface of the bracing, there is a problem that the screw head of the wood screw protrudes outward and affects the wall surface configuration.

  Accordingly, the present invention solves the above-described problems, and an object of the present invention is to enable a joint end of a brace to directly abut into a corner-intersection corner of a column-horizontal member and to fix a screw head for fixing. It is intended to provide a joining structure of a bracing portion in a wooden building that can prevent the portion from projecting to the outer side of the bracing.

In order to achieve the above-mentioned object, the joint structure in the wooden building according to the present invention is diagonally arranged between each column 6 between the left and right columns 6 and the upper and lower horizontal members 2 as shown in the embodiment of the figure. In the joining structure in the wooden building having the bracing 7 arranged so that the outer side surface thereof is flush with the outer side surface of the column 6,
The bracing 7 and the column 6 are composed of one piece 8a in plan view and another piece 8b perpendicular thereto, and are joined via a substantially L-shaped joining fitting 8 in which a plurality of screw mounting holes are formed through each surface. The lower part of the inclined surface of the bracing 7 facing the pillar 6 with a space between the pillar 6 is used as the lower end of the joint fitting 8, and one piece 8 a side is attached to the pillar 6 by a plurality of wood screw fixtures 9. The other piece 8b side is fixed to the inner surface of the bracing 7 with a plurality of wood screw fixtures 10.

  Further, as shown in claim 2, the column 6 below the joint fitting 8 and the upper surface of the horizontal member 2 are fixed by a plurality of wood screw fixtures 9 via a substantially L-shaped attachment fitting 11 in a side view. Can be made.

    Therefore, according to the present invention, the end of the bracing can be directly abutted against and fixed to the crossing end corner of the column-horizontal member, and the lifting gap between the bracing and the column is multiplied by vibration. And a strong and safe joint structure can be obtained.

  Further, as shown in claim 2, by joining the column 6 and the upper surface of the horizontal member 2 via the mounting bracket 11, a stronger and safer joint structure can be obtained.

  1 to 3 show cut muscle joint structures according to the present invention. In the figure, a foundation 2 is installed on a concrete foundation (cloth foundation) 1, and this foundation 2 is inserted through the upper end of an anchor bolt 3 embedded in the foundation 1 and a washer 4 on an upper projecting end of the foundation 2. It is fixed on the foundation 1 by a nut 5 connected via

  On the base 2, a square column 6 having the same cross-sectional dimension is erected vertically through a joint structure, and at the corner of the intersection between the base 2 and the column, there is a bracing 7. The lower corners cut at right angles are abutted. The upper end of this bracing 7 is abutted at the crossing corner of the other column (not shown) and the torso or girder, which is also erected on the base 2, and the upper and lower ends are inclined or Processing according to the shape of the corner is made. The material thickness of the braces 7 is approximately half (= 1/2) of the dimension W of one side of the column 6, and the width dimension is set equal to the column dimension (= W) in this embodiment. Further, the bracing 7 is attached to one side of the pillar 6-base 2 so that the outer side is flush with one side. The inner surface of the brace 7 is located at a position where the half of the width of the pillar 6 and the base 2 is retracted from the inner surface of the pillar 6 and the base 2, and a joining metal fitting to be described later is located above the retracted inner surface. 8 is attached and fixed.

  The bracing 7 and the column 6 are joined to each other by an L-shaped fitting 8 and two kinds of large and small wood screw fixtures 9 and 10 attached thereto. As shown in a part of FIG. 1 and shown in parallel, the large fixture 9 corresponds to the dimensions of the column 6 and the small fixture 10 has a length corresponding to the material thickness of the brace 7. In any of the fixtures 9 and 10, the same screw head is provided, and a screw bit insertion hole is formed in the screw head.

  The joint fitting 8 has the same vertical length, but is composed of one piece 8a made of a short piece fixed to the column 6 in plan view and another piece 8b made of a long piece fixed to the inner surface of the brace 7. A plurality of screw mounting holes that are staggered in the column direction and the width direction are formed through each surface.

  The mounting structure of the bracing 7 using the joining bracket 8 is different from the conventional one, and the lower end of the joining bracket 8 is positioned above the inclined surface of the bracing 7 before the bracing 7 is attached. A piece 8a is provided along the outer corner of the column 6 and fixed to the upper part below the column 6 via a fixture 10 made of a plurality of large screws. In this state, the surface on the other piece 8 b side of the joint fitting 8 becomes a positioning surface for the brace 7. In this state, the bracing 7 is attached in contact with the other piece 8b, a plurality of attachment holes formed in the other piece 8b are selected, and the fixing tool 10 made of a small screw is screwed and fixed to complete the joining. In addition, since the screw attachment hole is formed in the joining metal fitting 8 also in the part into which a screw cannot be screwed in, it formed in the surface facing the bracing 7 enclosed by the hatching of FIG. 1 among each attachment hole. Only the mounting hole may be selected to perform the mounting operation of the small screw 10.

  1 and 2, reference numeral 11 denotes a column in which a vertical portion is attached to the column 6, a horizontal portion is attached to the base, has an L shape, and an oblique reinforcing bracket is integrated on one side. It is a mounting bracket for a base, and by fixing a fixture 9 made of a large screw into a screw mounting hole formed on each surface of the mounting bracket 11, They are firmly connected. The mounting bracket 11 is bonded and fixed to the right-angled corners of the pillar 6 and the base 2 that are exposed below the inner surface of the brace 7 below the joint bracket 8.

  In the above embodiment, the existing L-shaped joint metal fitting is used as the joint metal fitting 8 used in the present invention. However, if the inclination angle of the braces is constant, the long piece 8b is inclined accordingly. Needless to say, the screw mounting holes can be arranged in an inclined shape in accordance with the inclination.

It is a disassembled perspective view which shows the joining structure of the braces concerning this invention like a cut model. It is the perspective view seen from the inside which shows an assembly state similarly. It is the perspective view seen from the outside which similarly shows an assembly state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete foundation 2 Base 3 Anchor bolt 4 Washer 5 Nut 6 Pillar 7 Bracing 8 Joint metal fitting 8a One piece 8b Other piece 9,10 Fixture 11 Mounting bracket

Claims (2)

Between the pillars (6), each pillar (6) and the upper and lower horizontal members (2) are obliquely installed, and the outer surface thereof is arranged so as to be flush with the outer surface of the pillar (6). In the joint structure in wooden buildings with bracing (7),
Between the bracing (7) and the column (6), it consists of one piece (8a) and the other piece (8b) perpendicular to it in a plan view, and has a substantially L shape with a plurality of screw mounting holes formed through each surface. The lower part of the inclined surface of the bracing (7) facing the space between the columns (6) is spaced at the lower end of the joining metal (8). The one piece (8a) side is fixed to the opposite surface of the pillar (6) to the bracing (7) by a plurality of fixtures (9), and the other piece (8b) side is fixed to the inner surface of the bracing (7). A joining structure in a wooden building, which is fixed to a plurality of fixtures (10).   The column (6) below the joining bracket (8) and the upper surface of the horizontal member (2) are fixed by a plurality of fixtures (9) via a substantially L-shaped mounting bracket (11) in a side view. The junction structure in the wooden building characterized by this.

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