JP5172607B2 - Joint structure of flat column and beam - Google Patents

Description

  The present invention relates to a joint structure between a flat column and a beam, and more particularly, to a joint structure using a joint metal at a joint between a flat column having a flat rectangular cross section, a receiving beam, and a hanging beam.

  For example, at the joints between pillars made of wooden squares, receiving beams, and hanging beams that form the framework structure of buildings such as wooden houses, precut joints are generally applied to the ends and joints of each square. In addition, by fitting these joints and reinforcing them with various joining hardware and attracting hardware, the column, the receiving beam and the hanging beam are preferably extended in directions perpendicular to each other. The joining structure joined in the state is adopted.

  Also, joint hardware has been developed that allows these members to be joined in a strong and stable state by using joint hardware and attracting hardware without pre-cutting the columns, receiving beams and hanging beams. (For example, refer to Patent Document 1).

On the other hand, in recent years, for example, in the case where a tall opening is provided in the outer wall portion of a building, for example, as a pillar constituting a frame structure that can effectively resist wind load, a flat having a long axis and a short axis A building may be constructed using a flat column having a rectangular cross-sectional shape (see, for example, Patent Document 2). In such a frame structure of the outer wall part using a flat column, by placing the flat column upright by placing the long axis direction perpendicular to the outer wall surface, a lateral load such as wind load is applied to the outer wall part. It is possible to improve the buckling strength of the column when loaded, and to form a stable frame structure of the outer wall portion.
JP-A-11-181886 JP 2007-2592 A

  In the framework structure using the above-described flat column, for example, at a joint portion between the flat column, the receiving beam, and the hanging beam, these members are extended in a direction perpendicular to each other, and a joint metal or a drawing metal is obtained. In order to join using a square, a special device is required as compared with the case of using a square pillar having a square cross-sectional shape. That is, when a flat column having a flat rectangular cross-sectional shape having a major axis and a minor axis is arranged and erected so as to be perpendicular to the beam in the major axis direction, the flat column has a width (thickness). It will not fit within the range of (3)), and a part of it will be installed in a state protruding from the side surface of the receiving beam in a direction perpendicular thereto. As a result, the flat column easily interferes with the joining hardware and the attracting hardware attached to the joining portion and a stable joining structure cannot be obtained. Therefore, the joining hardware and the attracting hardware are used while avoiding such interference. Therefore, there is a demand for the development of a new joint structure that can effectively join the flat column, the receiving beam, and the hanging beam.

  The present invention has been made paying attention to such a conventional problem, and it is possible to effectively use a flat column, a receiving beam, and a hanging beam while avoiding interference with these hardware by using a joint hardware and an attracting hardware. An object of the present invention is to provide a joint structure between a flat column and a beam that can be joined together.

  The present invention has a flat rectangular cross-sectional shape having a major axis and a minor axis, and a flat column that is mounted by being arranged in a direction perpendicular to the extending direction of the beam. A joint structure using a joint hardware at a joint between a beam and a hanging beam supported at one end by the receiving beam, wherein the flat column has one short side portion of the hanging beam of the receiving beam. It is provided in a state of projecting from the front part of the receiving beam by being arranged along the back part opposite to the front part on the beam side, and the hanging beam has one end part of the flat column. In a state of being placed on the upper end surface of the portion protruding from the front portion of the receiving beam, the end surface is provided in close contact with the front portion of the receiving beam, and the joint hardware sandwiches the hanging beam The right side of the receiving beam is connected to the both sides through screwing fixtures such as screws, nails and coach bolts. A pair of receiving beam bonding plate portions that are closely bonded to each other, a lower surface bonding plate portion that is closely disposed along the lower surface portion of the hanging beam, both side edges of the lower surface bonding plate portion, and the receiving beam bonding plate portion And a pair of side surface joining plates that are arranged along the side surface of the hanging beam and are tightly joined to the side surface via a driving fixture such as screws, nails, and coach bolts. The lower surface contact plate portion is disposed at a distance from the surface along the pair of receiving beam joining plate portions, so that the lower surface portion of the hanging beam does not interfere with the flat column. A vertical attracting metal is attached to a side surface of the flat column on the hanging beam side, and a fastening bolt of the vertical attracting metal is attached to the side of the hanging beam. Upper surface, or By providing a joint structure between the upper flat pillars over the beam side of the flat column, which is fastened to the side surface portion and the beam which is provided to extend upward from the surface is obtained by achieving the above object.

  In the joint structure of the flat column and the beam according to the present invention, the bottom-side contact plate portion of the joint hardware has a notch formed in a vertical bolt insertion notch, and the vertical bolt insertion notch is inserted into the notch. In addition, it is preferable that the fastening bolts of the vertically drawn metal fittings are arranged so as to cross the lower surface contact plate portion.

  Further, in the joint structure of the flat column and the beam according to the present invention, a lateral bolt insertion notch is formed in the receiving beam joining plate portion of the joint hardware, and the lateral bolt insertion notch is formed in the notch. The fastening bolt of the laterally attracting metal fitting that is inserted and attached to the side portion of the hanging beam crosses the receiving beam joining plate portion and is fastened to the back surface portion of the receiving beam. Preferably it is.

  Furthermore, in the joint structure of the flat column and the beam according to the present invention, an upper flat column is provided on the extension of the flat column, extending upward from the upper surface of the receiving beam and the hanging beam in the joint. It is preferable that the fastening bolt of the vertical pulling metal is fastened to the side portion of the upper flat column on the hanging beam side.

  According to the joint structure of the flat column and the beam according to the present invention, the flat column, the receiving beam, and the hanging beam are effectively joined using the joint metal and the attracting metal while avoiding interference with these hardware. be able to.

  1 and 2, the flat column-beam joint structure 10 according to a preferred embodiment of the present invention is a flat structure that forms a framework structure of an outer wall portion of a wooden house building, for example, by a frame construction method. At the joint portion between the column 11, the receiving beam 12, and the hanging beam 13, these members 11, 12, 13 are effectively joined in a stable state using the joint hardware 14 and the attracting hardware 15, 16. It was adopted to make it.

  That is, the joint structure 10 of the present embodiment has a flat rectangular cross-sectional shape having a major axis and a minor axis, and is arranged in a direction perpendicular to the extending direction of the beam 12 with respect to the major axis direction. The joint structure using the joint hardware 14 in the joint part of the flat column 11 attached to the support beam 12 and the hanging beam 13 supported at one end by the support beam 12, By arranging one short side portion 11a having a rectangular cross-sectional shape along the back surface portion 12b on the opposite side of the front surface portion 12a of the receiving beam 12 on the hanging beam 13 side, the short side portion 11a is arranged more than the front portion 12a of the receiving beam 12. It is provided in a state of projecting inward, and the hanging beam 13 is mounted on the upper end surface 11b of the portion projecting on the indoor side from the front surface portion 12a of the receiving beam 12 of the flat column 11, The end face is brought into close contact with the front portion 12a of the beam 12. It has been kicked.

  Further, the joining hardware 14 is a pair of receiving beam joining plates that are tightly joined to the front surface portion 12a of the receiving beam 12 via driving fixtures 20 such as screws, nails, and coach bolts at both sides sandwiching the hanging beam 12. The portion 17, the lower surface contact plate portion 18 disposed in close contact with the lower surface portion 13 a of the hanging beam 13, the both side edges of the lower surface contact plate portion 18, and the inner edge portion of the receiving beam joint plate portion 17 are connected to each other. And a pair of side surface joining plate portions 19 that are arranged along the side surface portion 13b of the hanging beam 13 and are tightly joined to the side surface portion 13b via a driving fixture 20 such as screws, nails, and coach bolts, The lower surface contact plate portion 18 is disposed with a space s (see FIGS. 3A and 3B) along the pair of receiving beam joining plate portions 17 so as to interfere with the flat column 11. That's true A vertical attracting metal 15 is attached to the side surface 11c of the flat column 11 on the side of the hanging beam 13 so as to be in close contact with the lower surface 13a of the hanging beam 13, and this vertical attracting metal 15 The fastening bolt 15a is fastened to the side surface portion 21c on the hanging beam 13 side of the upper flat column 21 provided to extend upward from the upper surface portion 13c of the hanging beam 13.

  Further, in the present embodiment, a vertical bolt insertion notch 22 is formed in the lower surface contact plate portion 18 of the joint metal piece 14 so as to be inserted into the vertical bolt insertion notch 22 and pulled in the vertical direction. Fastening bolts 15a of the feeder 15 are arranged so as to cross the lower surface contact plate portion 18.

  Furthermore, in the present embodiment, a lateral bolt insertion notch 23 is notched in the receiving beam joining plate portion 17 of the joint hardware 14, and is inserted into the lateral bolt insertion notch 23 to be hung. The fastening bolts 16 a of the laterally attracting hardware 16 attached to the side surface portion of the beam 13 cross the receiving beam joining plate portion 17 and are fastened to the back surface portion 12 b of the receiving beam 12.

  In the present embodiment, the flat column 11 is made of a wooden square member having a rectangular cross-sectional shape having a long side of about 210 mm and a short side of about 105 mm as a flat rectangular cross-sectional shape having a major axis and a minor axis. For example, from a concrete base 24, the building is installed upright in the vertical direction at a height of one to two layers of the building. On the upper end surface 11b of the flat column 11, the receiving beam 12 and the hanging beam 13 are installed so as to be supported by the upper end surface 11b.

  In this embodiment, the receiving beam 12 is made of, for example, a wooden square having a rectangular cross-sectional shape with a long side of about 300 mm and a short side of about 105 mm. The receiving beam 12 is arranged in a vertically long manner, and the flat column 11 is arranged such that the back surface 12b is along the upper end surface 11b of the flat column 11 and one short side portion 11a of the upper end surface 11b. In the state of extending horizontally in the direction perpendicular to the major axis of the joint, the joint is joined.

  In this embodiment, the hanging beam 13 is made of, for example, a wooden square having a rectangular cross-sectional shape with a long side of about 300 mm and a short side of about 105 mm. The hanging beam 13 is arranged vertically and has one end placed on a portion of the upper end surface 11b of the flat column 11 that protrudes more indoors than the front portion 12a of the receiving beam 12, and The end face is brought into close contact with the front portion 12 a of the beam 12 and is joined at the joint portion in a state of extending horizontally in a direction perpendicular to the receiving beam 12.

  In the present embodiment, the upper flat column 21 is provided so as to extend upward from the upper surface portions 12 c and 13 c of the receiving beam 12 and the hanging beam 13 at the joint portion with the flat column 11. Similar to the flat column 11, the upper flat column 21 is made of, for example, a wooden square having a rectangular cross-sectional shape with a long side of about 210 mm and a short side of about 105 mm. The upper flat column 21 is placed upright on the extension of the flat column 11 toward the upper floor, and the lower end surface of the upper flat column 21 is brought into close contact with the upper surfaces 12c and 13c of the beam 12 and the hanging beam 13 at the joint portion. Will be joined.

  In the present embodiment, the flat column 11, the receiving beam 12, the hanging beam 13, and the upper flat column 21 are connected to each other using the bonding hardware 14 and the attracting hardware 15 and 16 at these joints. It is joined and integrated in a state extending at a right angle.

  Here, the metal joint 14 is easily formed by, for example, performing a cutting process, a bending process, a drilling process, etc. on a metal plate having a thickness of about 3.2 to 4.5 mm. As shown in 3 (a) to 3 (c), it is composed of a pair of receiving beam joining plate portions 17, a bottom contact plate portion 18 and a pair of side surface joining plate portions 19 which are bent at right angles and connected.

  The receiving beam bonding plate portion 17 is a portion that is tightly bonded to the front portion 12a of the receiving beam 12 on both sides of the hanging beam 12, and is processed so as to have a flat and substantially right trapezoidal shape that lies on its side. In addition, the receiving beam joining plate portion 17 is formed with a plurality of perforations 25 for percussion fixing tools 20 such as screws, nails, and coach bolts, and the fastening bolts for the lateral pulling hardware 16. Lateral bolt insertion notches 23 through which 16a are inserted are formed as notch holes at two locations above and below.

  The lower surface contact plate portion 18 is a portion closely disposed along the lower surface portion 13a of the hanging beam 13 at a position away from the end surface of the hanging beam 13 and has a substantially rectangular shape so as not to interfere with the flat column 11. Are provided with a space s and a surface along the pair of receiving beam joining plate portions 17. Further, in the lower surface contact plate portion 18, a longitudinal bolt insertion notch 22 is formed in the center portion of the side portion on the receiving beam joining plate portion 17 side by notching the side portion in a concave shape. The vertical bolt insertion notch 22 can also be formed as a notch hole, for example, in the center portion of the lower surface contact plate portion 18.

  The side surface bonding plate part 19 maintains both sides of the lower surface contact plate part 18 and inner side edges of the receiving beam connection plate part 17 with a space s between the lower surface contact plate part 18 and the beam connection plate part. In addition, the lower surface contact plate portion 18 is connected to each other so as to be arranged perpendicular to the beam joint plate portion, and is also a portion that is tightly joined to the side surface portion 13b of the hanging beam 13. Further, a plurality of driving holes 25 for driving driving tools 20 such as screws, nails, and coach bolts are formed in the side surface joining plate portion 19.

  In the present embodiment, various kinds of attracting hardware known as a battledore bolt or the like can be used as the longitudinal attracting metal 15 or the lateral attracting metal 16.

  As shown in FIGS. 1 and 2, the joint structure 10 of the flat column and the beam according to the present embodiment can be easily used as follows, for example, using the joint hardware 14 and the attracting hardware 15 and 16. Can be formed. That is, first, the receiving beam 12 is supported by the upper end surface 11b of the flat column 11 arranged upright, and the back surface portion 12b is set along one short side portion 11a of the upper end surface 11b. Further, one end of the hanging beam 13 is placed on a portion of the upper end surface 11b of the flat column 11 that protrudes more indoors than the front portion 12a of the receiving beam 12, and the front surface 12a of the receiving beam 12 receives the end surface. Install in close contact with.

  Thereafter, the joining beam 14 is disposed at the joining portion so that the hanging beam 13 is fitted between the pair of side surface joining plate portions 19 from below, and the lower surface contact plate portion 18 is brought into close contact with the lower surface portion 13a of the hanging beam 13. In this state, the pair of receiving beam joining plate portions 17 are brought into close contact with the front surface portion 12a of the receiving beam 12 at both sides of the hanging beam 12, and the driving fixture 20 is directed toward the receiving beam 12 through the driving hole 25. By driving in, the metal joint 14 is fixed to the joint. As a result, the pair of side surface bonding plate portions 19 are also closely arranged along the side surface portions 13b on both sides of the hanging beam 13, so that the driving fixture 20 is driven toward the hanging beam 13 through the driving hole 25. Fix it.

  Next, in the present embodiment, the flat column 11 is erected toward the upper floor on the extension of the flat column 11 by being supported by the upper surface portion 12c of the receiving beam 12 and the upper surface portion 13c of the hanging beam 13 at the joint. Deploy.

  Further, the vertical pulling metal 15 is attached to the side surface portion 11c of the flat column 11 on the hanging beam 13 side. Further, the bolts 15a of the vertical pulling metal 15 are inserted through the hanging beams 13 at positions where they coincide with the vertical bolt insertion notches 22 of the lower surface contact plate portion 18 of the bonding metal 14. It passes through the hole 27 and extends above the hanging beam 13. By fastening the upper end portion of the fastening bolt 15a to the upper attracting metal 26 attached to the side surface portion 21c of the upper flat column 21 on the hanging beam 13 side, the receiving beam 12 and the hanging beam 13 are sandwiched up and down. The installed upper flat column 21 and the flat column 11 are attracted to each other.

  Furthermore, in this embodiment, the lateral pulling hardware 16 is attached to the side surface of the hanging beam 13. Further, the bolt 16a of the laterally attracting metal 16 is provided by penetrating the receiving beam 12 in the front-rear direction at a position where the fastening bolt 16a coincides with the lateral bolt insertion notch 23 of the receiving beam joining plate portion 17 of the joining hardware 14. It passes through the insertion hole and extends to the back surface portion 12 b of the receiving beam 12. By fastening the end portion of the fastening bolt 16a to the back surface portion 12b of the receiving beam 12 via a washer member 28, the hanging beam 13 is pulled toward the receiving beam 12 side.

  As a result, the flat column 11, the receiving beam 12, the hanging beam 13, and the upper flat column 21 are joined and integrated in a strong and stable state. 10 will be formed.

  And according to the junction part structure 10 of this embodiment provided with the above-mentioned structure, the flat pillar 11, the receiving beam 12, and the hanging beam are used using the joint hardware 14 and the drawing metal 15 while avoiding interference with these hardwares. 13 can be effectively joined.

  That is, according to the present embodiment, the flat column 11 is provided in a state of projecting to the indoor side with respect to the front portion 12 a of the receiving beam 12, and the hanging beam 13 has one end portion of the receiving column 13 of the flat column 11. 12 is provided in a state of being placed on the upper end surface 11b of the portion protruding to the indoor side from the front surface portion 12a, and the joint hardware 14 includes a pair of receiving beam joining plate portions 17, a lower surface adhesion plate portion 18, It consists of a pair of side surface joining plate portions 19, and the lower surface contact plate portion 18 interferes with the flat column 11 by being arranged at a distance s from the surface along the pair of receiving beam joining plate portions 17. The vertical attracting metal 15 attached to the flat column 11 extends above the hanging beam 13 without interfering with the lower surface contacting plate portion 18. Setting Therefore, it is possible to easily and effectively join the flat column 11, the receiving beam 12 and the hanging beam 13 in a stable state while avoiding interference with the hardware 14 and 15. .

  FIG. 4 shows a joint structure 30 between a flat column and a beam according to another preferred embodiment of the present invention. According to another embodiment shown in FIG. 4, the embodiment described above, except that the upper flat column 21 extending upward from the upper surface portions 12 a, 13 a of the receiving beam 12 and the hanging beam 13 in the joint portion is not provided. The structure is substantially the same as that of the joint structure 10. In another embodiment shown in FIG. 4, the fastening bolt 15 a of the longitudinal pulling hardware 15 attached to the side surface portion 11 c of the flat column 11 on the hanging beam 13 side penetrates the hanging beam 13, The upper end portion is fastened to the upper surface portion 13 c of the hanging beam 13 via the washer member 31, thereby pulling the hanging beam 13 toward the flat column 11. Also by the joint structure 10 of another embodiment shown in FIG. 4, the same effect as the joint structure 10 of the said embodiment is show | played.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, it is not always necessary to form a notch in the vertical bolt insertion notch in the lower surface contact plate portion of the joint hardware, and a gap portion is held between the lower surface contact plate portion and the flat column. You may make it let the fastening bolt of a vertical direction drawing metal thing pass through a space | interval part. Further, it is not always necessary to attach a laterally attracting metal to the side portion of the hanging beam and draw the hanging beam to the beam side.

It is a schematic perspective view explaining the structure of the junction part structure of the flat column and beam which concerns on preferable one Embodiment of this invention. It is a principal part perspective view which looked at the structure of the junction part structure of the flat column and beam which concerns on preferable one Embodiment of this invention which looked at FIG. 1 from diagonally lower right. (A) which shows a joining metal fitting is a front view, (b) is a right view, (c) is a top view. It is a schematic perspective view explaining the structure of the junction part structure of the flat column and beam which concerns on other preferable embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Junction structure of flat column and beam 11 Flat column 11a Short side part 11b of flat column Upper end surface 11c of flat column Side surface 12 of flat column hanging beam side Receiving beam 12a Receiving beam front surface 12b Receiving beam rear surface Part 12c Upper surface part of receiving beam 13 Hanging beam 13a Lower surface part 13b of hanging beam Lower surface part 13c of hanging beam Upper surface part of hanging beam

14 Joint metal 15 Vertical attracting metal 15a Fastening bolt 16 Lateral attracting metal 16a Fastening bolt 17 Receiving beam joint plate part 18 Lower surface contact plate part 19 Side joint plate part 20 Driving fixture 21 Upper flat column 21c Upper flat part Side face portion 22 on the side of the hanging beam of the column Vertical bolt insertion notch 23 Horizontal bolt insertion notch 25 Driving hole 27 Bolt insertion holes 28, 31 Washer member s The surface along the receiving beam joining plate portion and the lower surface adhesion plate portion Interval part

Claims (4)

A flat column having a flat rectangular cross section having a major axis and a minor axis, the major axis direction being mounted in a direction perpendicular to the extending direction of the beam, and the receiving beam; A joint structure using a joint metal in a joint with a hanging beam supported at one end by a receiving beam,
The flat column is provided in a state of projecting from the front part of the receiving beam by arranging one short side part along the back part of the receiving beam opposite to the front part on the hanging beam side. In the state where one end of the hanging beam is placed on the upper end surface of the portion of the flat column protruding from the front portion of the receiving beam, the end surface is brought into close contact with the front portion of the receiving beam. Provided,
The joint hardware is a pair of receiving beam joining plate portions that are tightly joined to the front portion of the receiving beam via a driving fixture such as screws, nails, and coach bolts at both sides of the hanging beam, The lower surface contact plate portion disposed in close contact with the lower surface portion of the hanging beam, both side edges of the lower surface adhesion plate portion and the inner edge portion of the receiving beam joining plate portion are connected to each other, and the side surface of the hanging beam And a pair of side surface joining plate portions that are closely joined to the side surface portion via a driving fixture such as screws, nails, and coach bolts. By being arranged at a distance from the surface along the beam joining plate part, it comes into close contact with the lower surface part of the hanging beam without interfering with the flat column,
A vertical attracting metal is attached to the side surface of the flat column on the hanging beam side, and the fastening bolt of the vertical attracting metal is located above the upper surface of the hanging beam or from the upper surface. A connecting structure of a flat column and a beam that is fastened to a side surface portion on the hanging beam side of an upper flat column that is provided extending to the beam.   A vertical bolt insertion notch is formed in the lower surface contact plate portion of the joint metal, and the fastening bolt of the vertical pull metal is inserted into the vertical bolt insertion notch. The joint structure of a flat column and a beam according to claim 1, which is arranged so as to traverse the contact plate portion.   A lateral bolt insertion notch is formed in the receiving beam joining plate portion of the metal fitting, and the lateral direction is inserted into the lateral bolt insertion notch and attached to the side portion of the hanging beam. The joint structure of a flat column and a beam according to claim 1 or 2, wherein the fastening bolt of the attracting metal crosses the receiving beam joining plate portion and is fastened to the back surface portion of the receiving beam.   The upper flat column is provided on the extension of the flat column, extending upward from the upper surface of the receiving beam and the hanging beam at the joint, and the fastening bolt of the vertical pulling hardware is: The junction structure of the flat column and the beam according to any one of claims 1 to 3, which is fastened to a side surface portion of the upper flat column on the hanging beam side.

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