JP2013194481A - Horizontal member junction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal member junction structure such that pipes and the like can be laid in a ceiling space crossing a hung beam without spoiling the flexural strength of the hung beam even when a ceiling member is arranged in the vicinity to a lower surface of the hung beam.SOLUTION: A junction between a receiving beam 11 arranged at an upper part of a wall body 10 and a hung beam 12 supported by the receiving beam 11 has a recessed cut 16 formed at a lower-end corner portion of an end 12a of the hung beam 12 joined to the receiving beam 12. Pipes and the like are arranged at the recessed cut 16. A beam height h2 of the hung beam 12 is larger than a beam height h1 of the receiving beam 11, and the recessed cut 16 has a cut upper-end portion 16a cut more upward than from a lower-end face 11a of the receiving beam 11. The cut upper-end portion 16a is fitted with a wall surface material 21 constituting a wall body 20 by fitting an upper-end edge 21a to a lower side face of the receiving beam 11 without cutting the upper-end edge 21a.

Description

  The present invention relates to a horizontal member joint structure, and more particularly, to a horizontal joint at a joint between a receiving beam disposed on an upper portion of a wall body of each floor of a building and a hanging beam supported by an end of the receiving beam. The present invention relates to a material joint structure.

  For example, in a wooden building such as a wooden house building, for example, the floor member of the upper floor is supported by a receiving beam that is a horizontal member arranged on the upper part of the wall of the lower floor, and an end portion is supported by the receiving beam. Thus, it is generally laid in a stable state by being supported by a floor frame member formed by a hanging beam that is a horizontal member laid in a direction perpendicular thereto.

  In addition, as a structure of the joint portion between the receiving beam and the hanging beam, in recent years, a beam receiving device having a U-shaped cross-sectional shape has been used instead of a structure in which the end surface of the hanging beam is joined to the side surface of the beam via a joint joint. Many products using hardware are used. At the joint between the receiving beam and the hanging beam using the beam receiving metal, for example, the beam receiving metal is fixed to the side surface of the receiving beam using a fixing bolt member, and the beam receiving object protruding from the side surface of the receiving beam The pair of side plates are inserted into a pair of slits formed on the end surface of the hanging beam, and a drift pin is driven from the side surface of the hanging beam, thereby joining the receiving beam and the hanging beam (for example, Patent Document 1). In joints that use such beam receivers, compared to those via joint fittings, the receiving beam and the hanging beam can be connected to the receiving beam with a simpler structure without subjecting the receiving beam or hanging beam to complicated joint processing. Since it is possible to join the hanging beam and to apply a large shearing force to the beam receiving metal, it is possible to form a strong joint.

  Furthermore, the beam length (beam height) of the receiving beam and the hanging beam depends on the difference in the span split between the column members and the receiving beams at both ends where they are supported and the load applied from above. In addition to the case where the beam is the same, the receiving beam may be larger than the hanging beam, or the hanging beam may be larger than the receiving beam. In addition, the bending stress generated in the hanging beam by the load borne by the hanging beam is maximum at the center of the hanging beam and minimum at the end of the hanging beam, so there is a considerable cross-sectional defect at the end of the hanging beam. However, the structural strength is not affected and the strength is not impaired. For this reason, for example, when the beam is larger in the hanging beam than in the receiving beam, the corner formed by the end surface and the lower surface of the hanging beam is cut obliquely in accordance with the lower end of the receiving beam. In particular, when installing a hanging beam as a beam, it eliminates the residents' distrust and anxiety that may be caused by the appearance without damaging the joint strength, and avoids excessive use of wood. A joint structure that can reduce costs has also been developed (see, for example, Patent Document 1).

Japanese Patent No. 45561473

  On the other hand, for example, when the ceiling member of the lower floor is installed below the hanging beam, it is preferable to arrange the ceiling member as close as possible to the lower surface of the hanging beam because the space of the lower floor becomes wide, but the ceiling member Is placed as close as possible to the underside of the hanging beam, and various pipes such as air conditioning equipment piping, water supply / drainage equipment piping, and electrical wiring equipment piping continue in the direction intersecting the hanging beam. It becomes difficult to lay it on the back of the ceiling.

  In the present invention, for example, even when the ceiling member is arranged close to the lower surface of the hanging beam, various pipes are continuously arranged in a direction intersecting the hanging beam without damaging the bending strength or bonding strength of the hanging beam. An object of the present invention is to provide a horizontal member joint structure that can be laid on the back of a ceiling.

  The present invention relates to a horizontal member joint structure in a joint portion between a receiving beam arranged on an upper part of a wall body of each floor of a building and a hanging beam supported by an end portion of the receiving beam. The lower end corner of the end of the hanging beam to be joined to the beam is notched in a concave shape, and the above object is achieved by providing a horizontal member joint structure in which a concave notch is formed. is there.

  In the horizontal member joint structure according to the present invention, it is preferable that the inner side surface of the upper end portion of the concave cutout portion is a curved concave surface that is curved in an arc shape when viewed from the side.

  In the horizontal member joint structure according to the present invention, it is preferable that the inner surface of the upper end of the notch is a curved concave surface that is curved into a substantially four-half arc shape when viewed from the side.

  Further, in the horizontal member joint structure according to the present invention, it is preferable that piping is continuously arranged across the hanging beam through the concave notch.

  Furthermore, the horizontal member joint structure according to the present invention is such that the wall face material constituting the wall body has the upper end edge of the receiving beam not cut out in the concave notch. It is preferable that it is attached to the side surface.

  Further, in the horizontal member joint structure according to the present invention, a liner member that supports an end portion of a field edge on the front surface side of the wall surface material through the upper end portion of the concave notch portion, It is preferred that they are arranged continuously across the beam.

  Further, in the horizontal member joint structure according to the present invention, the beam of the hanging beam is larger than the beam of the receiving beam, and the concave notch has the upper end of the notch as the receiving beam. The wall face material that constitutes the wall body cuts the upper edge at the upper end of the notch that has penetrated above the lower end surface of the receiving beam. It is preferable that the upper edge is attached to the lower side surface of the receiving beam without missing.

  Furthermore, in the horizontal member joint structure according to the present invention, it is preferable that the receiving beam and the hanging beam are joined with the height of the top end face aligned.

  According to the horizontal member joint structure of the present invention, for example, even when a ceiling member is disposed close to the lower surface of the hanging beam, various pipes can be hung without impairing the bending strength and bonding strength of the hanging beam. It can be laid on the back of the ceiling in a direction that intersects the beam.

It is a perspective view explaining the structure of the horizontal member junction part structure which concerns on preferable one Embodiment of this invention. It is sectional drawing explaining the structure of the horizontal member junction part structure which concerns on preferable one Embodiment of this invention. It is a disassembled perspective view explaining the structure of the horizontal member junction part structure which concerns on preferable one Embodiment of this invention. (A), (b) is a schematic sectional drawing of the horizontal member junction part structure which concerns on other preferable embodiment of this invention. It is a perspective view explaining the conventional horizontal member junction part structure.

  1 and 2, a horizontal member joint structure 10 according to a preferred embodiment of the present invention is arranged as a building, for example, in a wooden house building, at an upper part of a wall 20 of the building, both ends of which are column members. One receiving portion 11a is supported by the receiving beam 11 on the side surface of the receiving beam 11 supported and laid by (not shown), and another receiving beam installed opposite to the receiving beam 11 ( Adopted as a structure for joining the end face of the hanging beam 12, which is laid between it and a notch (not shown), in a strong and stable manner, preferably via a beam receiver 13 (see FIG. 3). is there. Further, in the horizontal member joint structure 10 of the present embodiment, for example, the ceiling member 14 on the lower floor is arranged close to the lower surface of the hanging beam 12, and the equipment piping for air conditioning is installed in the gap between them, Even when it is difficult to pass various pipes 15 such as equipment piping for water supply and drainage and equipment piping for electric wiring, a notched portion 16 having a predetermined shape is formed at a predetermined position, so that a hanging beam The piping 15 is continuously provided in the direction crossing the hanging beam 12 without damaging the bending strength and bonding strength of the roof 12 and has a function of being arranged on the back of the ceiling.

  The horizontal member joint structure 10 according to the present embodiment includes a receiving beam 11 disposed on the upper portion of the wall body 10 on each floor of the building, and a hanging beam supported by the receiving beam 11 with the end 12a supported. 1 and 2, the lower end corner portion of the end portion 12a of the hanging beam 12 to be joined to the receiving beam 11 is cut into a concave shape, as shown in FIGS. 16 is formed.

  In this embodiment, the beam h2 of the hanging beam 12 is larger than the beam hike (beam height) h1 of the receiving beam 11 (see FIG. 2), and the concave notch 16 is notched. The upper end portion 16 a is formed so as to bite upward from the lower end surface 11 a of the beam 11. In the upper end portion 16a of the notch that has digged above the lower end surface 11a of the receiving beam 11, a wall surface material 21 made of a load-bearing surface material that preferably constitutes the wall body 20 has an upper end edge portion 21a. The upper edge 21 a is joined to the lower side surface of the beam 11 without being cut out.

  In the present embodiment, as shown in FIG. 3, the receiving beam 11 constituting the horizontal member joint structure 10 is made of a wooden square member having a width of about 105 mm and a height of about 240 mm, for example, about 240 mm. It has a beam h1. Both ends of the receiving beam 11 are joined to column members (not shown) constituting the wall body 20, preferably via beam receiving brackets, so that they are laid between these column members, It is attached to the upper part of the wall body 20 so as to extend in the lateral direction.

  In addition, bolt screw holes 17 (see FIG. 3) for fixing the beam receiving metal 13 are formed at three positions at intervals in the vertical direction at the joining position of the hanging beam 12 on the side surface of the receiving beam 11. ing. These bolt screw holes 17 have a two-stage structure in which the side portion of the receiving beam 11 is expanded in diameter. By attaching positioning protrusions 13b provided to project outward from the contact plate portion 13a of the beam receiving member 13 to the enlarged diameter portions 17a on the side surfaces, the beam receiving member 13 is attached to the side surface of the receiving beam 11. In a stable state, the bolt member 22 can be used to firmly fasten and fix to the side surface of the receiving beam 11.

  The hanging beam 12 constituting the horizontal member joint structure 10 is made of a wooden square having a width of about 105 mm and a height of about 360 mm, for example, and has a beam h2 of about 360 mm, for example. The hanging beam 12 has one end portion 12a joined to the receiving beam 11 via a beam bracket 13, and the other end portion, for example, facing the receiving beam 11 and arranged in parallel. By being joined to another receiving beam 11 having the same configuration as that of the beam 11 via a beam receiving metal 13, it is installed between these receiving beams 11 and extends in a lateral direction perpendicular to the receiving beam 11. Attached. The hanging beam 12 is formed with a concave notch portion 16 to be described later by notching the lower end corner portion of the end portion 12a joined to the receiving beam 11 into a concave shape.

  Further, in the present embodiment, a pair of upper end portions of the end portion 12a joined to the receiving beam 11 of the hanging beam 12 above the concave notch 16 are cut in a direction perpendicular to the end surface. A notch recess 18 having a substantially U-shaped cross section including a parallel joining groove 18a is formed. That is, the notch recess 18 includes an end face notch portion 18b formed by an intermediate side portion having a substantially U-shaped cross section, which is thinly cut along the end face of the end portion 12a of the hanging beam 12, and an end face notch portion 18b. It consists of a joining groove 18a formed by a pair of side portions having a substantially U-shaped cross section cut vertically from both ends toward the axial direction of the hanging beam 12.

  When the end portion 12a of the hanging beam 12 is joined and fixed to the side surface of the receiving beam 11 via the beam receiving member 13, the pair of projecting plate portions 13c of the beam receiving member 13 fixed to the side surface of the receiving beam 11 are: It is mounted so that it fits in each of the pair of joining grooves 18a of the notch recess 18 formed in the end 12a of the hanging beam 12. Further, the contact plate portion 13 a of the beam receiver 13 is attached in a state of being accommodated in the end surface notch portion 18 b of the notch recess portion 18.

  Further, a beam receiver attached to the joining groove 18a is formed on the side surface of the end portion 12a of the hanging beam 12 adjacent to the end surface where the notch recess 18 is formed so as to penetrate between both side surfaces. A beam-side drift pin engagement hole 19 is drilled at a position that coincides with a plurality of drift pin engagement holes 13d and drift pin engagement notches 13e formed in the overhang plate portion 13c of the metal piece 13.

  In the present embodiment, the beam receiver 13 is preferably formed by bending a metal plate member, so that the contact plate portion 13a constituting the middle side portion of the U-shape and the both sides of the U-shape. It is a plate-like metal fitting for beam joining which is formed by processing so as to have a substantially U-shaped cross-sectional shape, which is composed of a pair of overhanging plate portions 13c constituting the side portions. The abutting plate portion 13a of the beam receiver 13 has three bolt fastening holes formed in the center portion of the positioning projection 13b at predetermined intervals in the vertical direction. In the portion 13c, six drift pin engagement holes 13d and drift pin engagement notches 13e are formed at predetermined intervals in the vertical direction.

  Further, in the present embodiment, as described above, the bolt screw formed on the side surface of the receiving beam 11 so as to protrude outward from the outer surface of the contact plate portion 13a of the beam receiving member 13 having a substantially U-shaped cross-sectional shape. Positioning projections 13b that are positioned and mounted on the enlarged diameter portion 17a of the hole 17 are provided at three positions at predetermined intervals in the vertical direction. Bolt fastening holes are formed in the central portions of the positioning projections 13b, and the heads of bolt members 22 for fixing the beam receiver 13 to the side surface of the beam 11 are provided as necessary. With the washer member interposed, the positioning projections 13b are fastened inside the hollow space.

  In the present embodiment, a pair of joining grooves 18a of a notch recess 18 formed in the end 12a is formed in a pair of overhanging plate portions 13c of the beam receiving fixture 13 fixed to the joining portion of the hanging beam 12 on the side surface of the receiving beam 11. , And after positioning the end portion 12a of the hanging beam 12 on the side surface of the beam 11, the drift pin engagement is performed from the side surface of the end portion 12a of the hanging beam 12 through the beam side drift pin engagement hole 19. By driving a plurality of drift pins 23 toward the holes 13d and the drift pin engagement notches 13e, the end 12a of the hanging beam 12 is formed on the side surface of the receiving beam 11, preferably the top end surface of the receiving beam 11 and the hanging beam 12. In the state where the heights of the top end surfaces of the two are aligned, they are easily and firmly joined firmly in a stable state. Since the receiving beam 11 and the hanging beam 12 are joined with the height of the top end face aligned, the receiving beam 11 and the hanging beam 12 are used as a floor frame member to make the upper floor member more stable. It can be easily supported in the state.

  And in this embodiment, the notch part 16 is formed by notching the lower end corner part of the edge part 12a of the hanging beam 12 joined to the receiving beam 11 into a concave shape. In the present embodiment, the concave notch 16 fits into a region where the width b1 is about 80 mm and the height h3 is about 180 mm, as shown in FIG. Is formed. Here, it is preferable that the concave notch 16 is formed so as to fit in a region where the width b1 is about 20 to 200 mm and the height h3 is about 60 to 400 mm. By forming the concave notch 16 in such a region, it is possible to easily arrange the piping for equipment, wiring, and the like without passing through the hanging beam 12. The concave notch 16 preferably has a height h4 of the notch upper end 16a that is bitten above the lower end surface 11a of the receiving beam 11 to about 20 to 100 mm. Thereby, the wall surface material 21 made of, for example, a wall board can be easily attached to the receiving beam 11 without being cut out in the shape along the outer peripheral shape of the hanging beam 12.

  Further, in the present embodiment, the notch upper end portion 16a of the concave notch portion 16 is a curved concave surface whose inner surface is curved in an arc shape when viewed from the side, and particularly preferably, the notch upper end portion 16a is The inner surface is a curved concave surface that is curved into a substantially semicircular arc shape when viewed from the side. Since the inner side surface of the notch upper end portion 16a of the concave notch portion 16 is a curved concave surface, the cross section of the beam that is likely to occur in the hanging beam 12 at the notch upper end portion 16a of the concave notch portion 16 is lost. It is possible to effectively avoid the occurrence of splitting at the end of the hanging beam 12 due to being present. The radius of curvature of the curved concave surface curved in an arc is preferably about 20 to 200 mm, for example.

  Furthermore, in this embodiment, as shown in FIG. 1, in the concave notch portion 16, as shown in FIG. 1, piping 15 such as air conditioning equipment piping, water supply / drainage equipment piping, electrical wiring equipment piping, etc. It is continuously arranged across the hanging beam 12. In addition, a liner member 25 that passes through the concave cutout portion 16 and supports the end portion of the field edge 24 is continuously disposed across the hanging beam 12 on the front surface side of the wall surface material 21. Has been. The liner member 25 that supports the end portion of the field edge 24 is attached to the concave notch portion 16 through the upper end portion, so that the upper surface portion is supported and attached to the field edge 24, such as a ceiling board. The ceiling member 14 can be disposed close to the lower surface of the hanging beam 12 to widen the space on the lower floor.

  Furthermore, in the present embodiment, in the concave cutout portion 16, the wall face material 21 made of a load bearing face material that preferably constitutes the wall body 20 is provided with a fireproof coating without cutting out the upper edge 21a. The upper edge 21 a is joined and attached to the lower side surface of the beam 11.

  And according to the horizontal member joining part structure 10 of this embodiment provided with the above-mentioned structure, even when the ceiling member 14 is disposed close to the lower surface of the hanging beam 12, the bending strength and the joining strength of the hanging beam 12 are increased. Without damaging it, it becomes possible to lay various pipes 15 on the back of the ceiling continuously in the direction intersecting the hanging beam 12.

  That is, according to the present embodiment, in the joint portion between the receiving beam 11 and the hanging beam 12, the lower end corner portion of the end portion 12a of the hanging beam 12 is cut out in a concave shape to form the concave cutout portion 16. Therefore, the piping 15 is passed through the concave notch 16 formed by notching the end 12a where the bending stress generated in the hanging beam 12 is reduced by the load borne by the hanging beam 12, so that the lower surface of the hanging beam 12 Even when there is only a slight gap between the ceiling member 14 and the ceiling member 14, the piping 15 is easily arranged continuously in the direction intersecting the hanging beam 12 without impairing the bending strength and bonding strength of the hanging beam 12. It becomes possible.

  Further, according to the present embodiment, as shown in FIG. 1, in the concave cutout portion 16, the wall surface material 21 is received by the upper end edge portion 21 a of the receiving beam 11 without cutting out the upper end edge portion 21 a. The liner member 25 that can be attached to the lower side surface and that passes through the concave notch 16 through the upper end portion thereof and supports the end of the field edge 24 is continuously attached across the hanging beam 12. Be able to. As a result, for example, as shown in FIG. 5, at the joint between the receiving beam 11 ′ and the hanging beam 12 ′ supported by the receiving beam 11 ′ and the end portion 12a ′, the end of the hanging beam 12 ′ is obtained. A concave notch is not formed at the lower end corner of the portion 12a ′, and therefore, a U-shape for avoiding buffering with the hanging beam 12 ′ at the upper end edge 21a ′ of the wall surface material 21 ′. Compared with the case where it is necessary to form the notch 21b 'or the liner member 25' is divided and attached, the workability of the joint portion can be effectively improved.

  Note that the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the receiving beam and the hanging beam, the hanging beam does not necessarily have to be larger than the receiving beam. For example, as shown in FIG. As shown in FIG. 4B, the beam beams of the receiving beam 11 and the hanging beam 12 may be the same. Even in these cases, the same effects as described above can be obtained by arranging the piping 15, the upper end portion of the liner member 25, and the upper end edge portion 21 a of the wall surface material 21 in the concave notch portion 16. The Further, the receiving beam and the hanging beam do not necessarily have to be joined with the height of the top end face aligned.

DESCRIPTION OF SYMBOLS 10 Horizontal member joining part structure 11 Receiving beam 11a Lower end surface 12 Hanging beam 12a End 13 Beam receiving member 14 Ceiling member 15 Piping 16 Recessed notch 16a Notch upper end 17 Bolt screwing hole 18 Notch recess 19 Beam Side drift pin engagement hole 20 Wall body 21 Wall face material 21a Upper end edge 22 Bolt member 23 Drift pin 24 Field edge 25 Liner member

Claims (8)

In the horizontal member joint structure at the joint between the receiving beam arranged at the upper part of the wall of each floor of the building and the hanging beam supported by the receiving beam at the end,
A horizontal member joint structure in which a lower-end corner of the end of the hanging beam joined to the receiving beam is cut out in a concave shape to form a concave cut-out. The horizontal member joint structure according to claim 1, wherein an upper end portion of the cutout portion of the concave cutout has a curved concave surface whose inner side surface is curved in an arc shape when viewed from the side. The horizontal member joint structure according to claim 2, wherein an inner side surface of the upper end portion of the notch is a curved concave surface that is curved into a substantially semicircular arc shape when viewed from the side. The horizontal member joining portion structure according to any one of claims 1 to 3, wherein piping is continuously arranged across the hanging beam through the concave notch. The wall face material constituting the wall body is attached to the concave notch portion by joining the upper edge to the side surface of the receiving beam without notching the upper edge. The horizontal member joint structure according to claim 1. A liner member that passes the upper end portion through the concave notch and supports the edge of the field edge is continuously disposed across the hanging beam on the front side of the wall surface material. The horizontal member joint structure according to claim 5. The beam of the hanging beam is larger than the beam of the receiving beam, and the concave notch is formed by biting the upper end of the notch above the lower end surface of the receiving beam. A wall face material that constitutes the wall body at the upper end of the notch cut into the upper end of the lower end surface of the receiving beam, the upper end edge of the receiving member below the lower end of the receiving beam without notching the upper end edge. The horizontal member joint structure according to any one of claims 1 to 6, wherein the structure is joined to a side surface. The horizontal member joint structure according to claim 1, wherein the receiving beam and the hanging beam are joined with the height of the top end face aligned.

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