JP4735496B2 - Column and beam joint structure - Google Patents

Description

  The present invention relates to a joint structure between a column and a beam.

  Conventionally, a joining structure as shown in Patent Document 1 is known as one for joining two beams orthogonal to a column.

  As shown in FIG. 7, the joint structure disclosed in Patent Document 1 has a head metal fitting 30 fixed to an upper surface portion of a wooden pillar 4 and a wooden plate 31 attached to the upper horizontal plate portion 31 of the head metal fitting 30. Covering the upper surface of the column 4, place the longitudinal end of the flange of one beam 7 a on one half of the upper horizontal plate 31 and fix it with the bolt 9 as the fixing tool 9. An intermediate portion in the longitudinal direction of the flange portion of the other beam 7b orthogonal to the one beam 7a is placed on the other half portion of the plate portion 31 and fixed by a bolt 9 as a fixing tool 9. Yes.

However, in this conventional example, since one and the other beams 7a and 7b are joined to the upper horizontal plate portion 31 of the head fitting 30, three members (upper horizontal plate portion 31, one In addition, since the other beams 7a and 7b) are joined, there is a problem that joining work is troublesome and difficult to join with high accuracy, and workability is poor. Further, when the beam is made of H-shaped steel and the flange thickness is thin, the rigidity of the joint portion between the longitudinal end portion of one beam 7a and the upper horizontal plate portion 31 is low, and this portion is easily deformed by shearing. There was a problem.
JP 2002-115325 A

  The present invention was invented in view of the above-described conventional problems, and in joining two beams orthogonal to the upper end portion of the column, the joining member in one joining portion becomes two members. An object of the present invention is to provide a column-beam junction structure that can be easily and reliably joined and can improve the rigidity of the joined portion.

  In order to solve the above-mentioned problem, the column-beam joining structure according to the present invention is such that the horizontal plate portion 1 of the column head metal fitting 3 with the head portion 2 protruding upward from one half of the horizontal plate portion 1 is connected to the column 4. The head portion 2 is fixed to the upper surface portion so that the head portion 2 protrudes upward from one half portion of the upper surface portion of the column 4 and the other one half portion where the head portion 2 of the horizontal plate portion 1 does not project is provided as the beam placing portion 5. The joint plate 6 is provided on the side of the head 2 opposite to the beam mounting portion 5 and the end plate 8 provided at the end in the longitudinal direction of the one beam 7a and the joint plate 6 are overlapped and fixed. The other beam 7b orthogonal to the one beam 7a is placed on the beam mounting portion 5 of the column head metal fitting 3, and the other beam 7b is fixed to the beam mounting portion 5 by the fixing tool 9. It is characterized by being fixed.

  With such a configuration, the other beam 7 b is joined to the horizontal plate portion 1 of the column head bracket 3 fixed to the upper surface portion of the column 4, and one half of the horizontal plate portion 1 of the column head bracket 3 is joined. The end plate 8 provided at the end in the longitudinal direction of one beam 7a is joined to the joining plate 6 on the side of the head 2 projecting upward from the part, and each joining portion (that is, Two members are joined in the horizontal plate portion 1 and the joining plate 6 portion on the side of the head portion 2), and the joining can be performed easily and reliably, and provided at the longitudinal end of one beam 7a. Since the end plate 8 and the joining plate 6 are overlapped and fixed by the fixing tool 9, the rigidity of the connecting portion can be improved.

  Further, the horizontal plate portion 1 of the column head metal fitting 3 with the head portion 2 protruding upward from one half of the horizontal plate portion 1 is fixed to the upper surface portion of the wooden column 4, and at least the upper surface of the metal beam main body 10. A metal end plate 8 is provided at the longitudinal end of the beam main body 10 of at least one of the one beam 7a and the other beam 7b to which the wooden beam outer surface plate 11 is fixed. A metal end plate 8 and a metal joining plate 6 provided at the end in the longitudinal direction of the beam body 10 are fixed by a fixing tool 9, and the other beam 7 b is mounted on the beam mounting portion 5. It is preferable that the metal beam main body 10 of the other beam 7 b and the beam mounting portion 5 are fixed to each other by the fixing tool 9.

  By adopting such a configuration, it is possible to join the wooden pillar 4 and the one beam 7a having the wooden beam outer surface plate 11 in part and the other beam 7b according to the metal-to-metal joining specifications, respectively. Becomes stronger.

  As described above, according to the present invention, when two beams orthogonal to the upper end of a column are joined, the end plate of one beam and the joining plate are overlapped and fixed by a fixing tool, Since the other beam is mounted on the mounting portion and the other beam is fixed to the beam mounting portion with a fixing tool, the joining member in one joining portion becomes two members, and can be easily and reliably joined. Since the end plate provided at the end in the longitudinal direction of one beam and the joining plate provided at the side of the head are overlapped and joined, the rigidity of the joining portion can be improved.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In the figure, A is a gate-type frame, which is constructed by integrating a pair of left and right columns 4 and one beam 7a installed between the pair of left and right columns 4 in a gate shape.

  A column head metal fitting 3 is fixed to an upper end portion of the column 4. The pillars 4 are made of wood and have fitting slits 12 that open on the top and side surfaces.

  The column head metal fitting 3 is fitted downward from the lower surface of the horizontal plate portion 1 and the hanging piece 13 is integrally suspended, and the head portion 2 having an H-shaped section is protruded integrally from one half of the horizontal plate portion 1. It is set up. The other half of the horizontal plate 1 that does not project the head 2 is a flat beam placing portion 5 that is perpendicular to the side opposite to the beam placing portion 5 of the head 2. The joining plate 6 is provided integrally.

  The metal column head metal fitting 3 having the above-described configuration is configured such that the hanging piece 13 is fitted into the fitting slit 12 at the upper end of the wooden column 4 and the horizontal plate portion 1 is placed on substantially the entire upper surface of the column 4. The drooping piece 13 is fixed by a plurality of fixing tools 9 made of pins, and the horizontal plate 1 and the pillar 4 are fixed by a fixing tool 9 such as an embedded bolt, so that a metal is attached to the upper end of the wooden pillar 4. The made column head metal fitting 3 is fixed.

  A lower mounting bracket 14 is attached to the lower end of the column 4.

  The beam 7 (one beam 7a, the other beam 7b) is configured by fixing a wooden beam outer plate 11 to at least the upper surface (upper surface and lower surface in the embodiment shown in the accompanying drawings) of a metal beam body 10 made of H steel. It is a metal / wood composite beam.

  Of these beams 7, a metal vertical end plate 8 is fixed to an end of at least one of the beams 7a in the longitudinal direction of the beam body 10.

  As shown in FIG. 1, the lower mounting bracket 14 attached to the lower end portion of the column 4 is placed on the base 15 and anchor bolts 16 are fixed to the lower mounting bracket 14 so as to stand upright. The end plates 8 provided at both ends in the longitudinal direction are overlapped on the joining plates 6 of the column head metal fittings 3 fixed to the upper ends of the left and right columns 4, respectively, and fixing tools 9 made of bolts and nuts at a plurality of positions on the upper and lower sides. The gate-type frame A is formed by fixing with the above.

  The portal frame A is formed by assembling the left and right columns 4 and one beam 7a in a portal shape in advance, and then the portal frame A is built on the foundation 15 and fixed to the anchor bolts 16. Good.

  As described above, the plurality of portal frames A are built at intervals in the front-rear direction.

  Of the plurality of built-in gate-type frames A in the front-rear direction, the gate-type frame A ′ for the end portion to be built at both front and rear end portions is built in other than the front and rear end portions as shown in FIG. A column head metal fitting 3 ′ different from the column head metal fitting 3 of the portal frame A is used. The column head metal fitting 3 ′ does not have the beam placing portion 5, and a head 2 ′ having an H-shaped cross section over the entire width in the left-right direction of the horizontal plate portion 1 is integrally projected upward. The head 2 'is provided with a joining plate 6 on one side in the left-right direction. And one beam 7a is arrange | positioned between the upper end parts of a pair of wooden pillar 4, and the end plate 8 is joined to the joining plate 6 of the column head metal fitting 3 'each fixed to the upper end part of the right and left pillars 4. Thus, the gate-type frame A ′ at the end is formed.

  In constructing the plurality of portal frames A, the portal frame A 'having the above-described configuration is installed at the front and rear ends.

  Since another beam 7b (the beam 7 arranged so as to be orthogonal to one beam 7a constituting the gate frame A) is installed between the upper ends of the columns 4 of the plurality of portal frames A arranged in the front-rear direction. In this case, in order to join a portion other than both longitudinal ends of the other beam 7b to the column 4 of the portal frame A, as shown in FIGS. 2 and 4, the longitudinal direction of the other beam 7b is used. Is mounted on the beam mounting portion 5 on one half of the horizontal plate portion 1 of the column head metal fitting 3 fixed to the upper end portion of the column 4, and the other beam 7b is fixed by a fixing tool 9 such as a bolt. The lower flange portion 10 a of the beam main body 10 is fixed to the beam placing portion 5. Here, when the wooden beam outer surface plate 11 is fixed to the lower surface of the other beam main body 10, the wooden beam outer surface plate 11 is not provided in the portion mounted on the beam mounting portion 5, and the metal beam main body 10 is not provided. The lower flange portion 10 a is directly placed on the metal beam placing portion 5 and is fixed by the fixing tool 9.

  As a result, as shown in FIG. 2, the other beam 7 b is joined to the horizontal plate portion 1 of the column head bracket 3 fixed to the upper surface portion of the column 4, and one side of the horizontal plate portion 1 of the column head bracket 3 is joined. An end plate 8 provided at the end of one beam 7a in the longitudinal direction is joined to the joining plate 6 on the side of the head 2 protruding upward from the half. Accordingly, in each joint portion (that is, the horizontal plate portion 1 and the joint plate 6 portion on the side of the head portion 2), two members are joined (the two plate members of the horizontal plate portion 1 and the other beam 7b). Joining, joining of two members of the joining plate 6 on the side of the head 2 and the end plate 8 of one beam 7a). As a result, the joining can be made easier and more reliable than the conventional joining of three members at one joining portion, and the joining is perpendicular to the vertical end plate 8 provided at the longitudinal end of one beam 7a. Since the plate 6 is overlapped and fixed by the fixing tool 9, the rigidity of the joint portion can be improved and deformation due to shear can be prevented.

  In the embodiment shown in the attached drawings, the web 2a of the head 2 having an H-shaped cross section and the web 10b of the beam body 10 of the other beam 7b are connected to bolts and nuts via an L-shaped connecting fitting 20. Further fixing is performed using such a fixing tool 9. Thereby, the web 2a of the head 2 and the web 10b of the beam main body 10 of the other beam 7b can be further joined, and the other beam 7b is joined more firmly.

  The end in the longitudinal direction of the other beam 7b is the head 2 'provided on the column head metal fitting 3' attached to the upper end of the column 4 of the portal frame A 'as shown in FIG. It is joined by the fixing tool 9 through the connection fitting 17.

It is front sectional drawing of this invention. It is an expanded front sectional view of X part same as the above. It is sectional drawing of the YY line | wire of FIG. It is the side view seen from the Z direction of FIG. It is a front view of the portal frame | frame of the edge part of the front-back direction. It is a disassembled perspective view explaining joining of the pillar of the portal frame | frame of the edge part of the front-back direction, and the other beam. It is a front view which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontal flat plate part 2 Head 3 Column head metal fittings 4 Column 5 Beam mounting part 6 Joining plate 7a One beam 7b The other beam 8 End plate 9 Fastening tool 10 Beam main body 11 Wood beam outer surface board

Claims (2)

  The horizontal plate portion of the column head metal fitting with the head protruding upward from one half of the horizontal plate portion is fixed to the upper surface of the column so that the head protrudes upward from one half of the upper surface of the column and is horizontal. The other half of the plate that does not protrude from the head is used as the beam mounting part, and a bonding plate is provided on the side of the head opposite to the beam mounting part. The end plate provided in the part and the joining plate are overlapped and fixed by a fixing tool, and the other beam orthogonal to the one beam is mounted on the beam mounting part of the column head metal fitting, and the other beam is fixed to the beam. A column-to-beam joint structure characterized by being fixed to a mounting portion with a fixing tool.   The horizontal plate part of the column head metal fitting with the head protruding upward from one half of the horizontal plate part is fixed to the upper surface part of the wooden column, and the wooden beam outer plate is fixed to at least the upper surface of the metal beam main body. A metal end plate is provided at the longitudinal end of the beam body of at least one of the one beam and the other beam, and the metal end is provided at the longitudinal end of the beam body of one beam. The plate and the metal joining plate are fixed by a fixing tool, the other beam is mounted on the beam mounting portion, and the metal beam body and the beam mounting portion of the other beam are fixed by the fixing tool. The column-to-beam joint structure according to claim 1, wherein

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