JP6231962B2 - Column-beam connection structure - Google Patents

Description

  The present invention relates to a structure of a connecting portion between a column and a beam of a building external structure such as a carport.

  Increasingly, external buildings such as carports and bicycle storage are installed and expanded in houses and stores.

  And this kind of building external structure is a cantilever state in which the rear ends are connected to the upper ends of each of the columns 1 and the plurality of columns 1 standing at intervals in the horizontal direction T1, respectively. A plurality of extended beams 2, supported by the plurality of beams 2, installed in the transverse direction T <b> 1, and supported by the plurality of purlins 3 arranged at intervals in the front-rear direction T <b> 2 and the plurality of purlins 3. A plurality of rafters 4 installed in the front-rear direction T2 and spaced apart in the lateral direction T1, and a roof panel 5 provided to be supported by the rafters 4 and forming a roof surface. (See FIG. 1).

  Moreover, this kind of building exterior structure is formed using the hollow aluminum shape material which the support | pillar 1 and the beam 2 each formed, for example by extrusion molding. Then, as shown in FIG. 9, the support column 1 and the beam 2 are connected using a bracket (connection member) 6 formed in a substantially inverted L shape (see, for example, Patent Document 1 and Patent Document 2). ).

  Specifically, the bracket 6 is made of metal and has a column-side fitting portion 6a linearly extending in the vertical direction T3, and a roof portion 7 ( A beam-side fitting portion 6b extending linearly at a predetermined angle corresponding to the angle of the beam 2) is formed in a substantially inverted L shape. Then, by fitting the column-side fitting portion 6a into the hollow portion from the upper end portion 1a side of the column 1 and fitting the beam-side fitting portion 6b into the hollow portion on the rear end side of the beam 2, the bracket 6 The beam 2 can be connected to the column 1 in a cantilevered state.

  Further, as shown in FIGS. 9 and 10, the support column 1 is recessed from the upper end portion 1a to the lower end portion at the center in the width direction on the upper end portion 1a side of the side surface facing the extending direction (front) of the beam 2. A notch 8 that penetrates from the inner surface to the outer surface is formed. Thus, when the column-side fitting portion 6a of the bracket 6 is fitted to the support column 1, the column-side fitting portion 6a is fitted into the notch portion 8, and the upper end portion of the column-side fitting portion 6a is used as the upper end portion of the support column 1. It can be disposed at substantially the same height as 1a.

  Further, the beam 2 is passed through the center hole, and an annular column beam cover 9 is installed in the joint portion 10 between the peripheral end of the notch portion 8 of the support column 1 and the beam 2 to ensure the design of the joint portion 10. Like to do. Further, a column cap 11 is attached to the upper end portion 1 a of the column 1.

Japanese Patent Laid-Open No. 08-232490 Japanese Patent Laid-Open No. 10-37506

  On the other hand, as shown in FIG. 10 (FIG. 9), when a large load acts on the roof portion 7 and thus the beam 2 due to snow or strong wind, a bending load acts on the bracket 6 to cause displacement. There is a possibility that the side surface portion 6c facing the front side of the side wall piece 1b on both sides of the notch portion 8 of the support column 1 may be deformed and damaged.

  On the other hand, in the conventional column-beam connection structure, as shown in FIG. 9, the column cap 11 is formed of metal, and the column cap 11 is connected to the upper end portion 1a of the column 1 by covering it. The bracket 6 is installed so that the upper end of the bracket 6 can be pressed, and the bracket 6 is prevented from moving by the pillar cap 11. For this reason, it is necessary to form the pillar cap 11 firmly, which is one factor incurring high costs. Moreover, when the angle of the roof part 7 is large, the drawing process of the pillar cap 11 becomes deep, and its manufacture becomes difficult. Therefore, at present, there is a disadvantage that the application of this structure is limited to the case where the angle of the roof portion 7 is almost flat.

  In addition, in patent document 1 and patent document 2, although the bracket by which the side part facing the front of the upper end part side is formed as an inclined surface is disclosed, this inclined surface simply receives the rear end side of the beam. However, it is inevitably formed at an inclination angle orthogonal to the material axis of the beam.

  In view of the above circumstances, the present invention prevents the support member from striking the side surface of the support column and avoids deformation and damage of the support column even when the connection member (bracket) connecting the support column and the beam is displaced. It is an object of the present invention to provide a column-beam connection structure that has been made possible.

  In order to achieve the above object, the present invention provides the following means.

  The column-beam connection structure of the present invention is a column-beam connection structure that connects a column and a beam formed in a hollow shape using a connection member, and the connection member extends vertically. A column-side fitting portion that fits into the hollow portion from the upper end portion of the support column, a rear end is connected to the upper end side of the column-side fitting portion, and extends substantially laterally at a predetermined angle. A beam-side fitting portion that fits into the hollow portion from the rear end portion side, and is formed in a substantially inverted L shape, and the support column is recessed from the upper end portion to the lower end portion on the side surface facing forward, The fitting portion is formed with a notch portion into which the fitting portion is fitted, and is provided on both sides of the notch portion, on the side wall piece portion of the column that forms the notch portion, and on the column side to the column The surface of the column-side fitting portion facing in the front-rear direction with the fitting portion fitted is downward depending on the assumed maximum stress acting on the connecting member. And is formed as an inclined surface that gradually inclines toward the center in the front-rear direction, and a gap is provided between the side wall pieces on both sides of the notch and the inclined surface of the connecting member. To do.

  In the column-beam connection structure of the present invention, the column cap for closing the upper end of the column, the notch of the column, the beam-side fitting unit, and the beam-side fitting unit are fitted. It is desirable that the column cap and the column beam cover are attached separately from the connecting member, respectively.

  In the pillar-to-beam connection structure of the present invention, the side wall piece part forming the notch part of the pillar and the column-side fitting part surface of the connecting member facing in the front-rear direction are covered with a roof or beam by snow or strong wind. Is formed as an inclined surface inclined at an angle corresponding to the maximum stress acting on the connecting member (bracket). For this reason, even if a load is applied to the beam and the connecting member is displaced, the column-side fitting portion does not come into contact with the side wall piece of the column, and the column-side fitting portion comes into contact with the column in the conventional manner. Deformation can be reliably prevented.

  As a result, it is not necessary to fix the column cap, which is formed firmly like the conventional one, to the connecting member and the column, and to prevent the connecting member from moving by pressing the column cap, that is, by covering the upper end of the column. It is only necessary to ensure the appearance, and it is possible to use a pillar cap made of resin or the like. Also, the column beam cover does not need to be fixed to the connecting member and the column, and a column beam cover made of grease or the like can be used so as to allow displacement of the connecting member. Therefore, compared with the conventional case, it is possible to reduce the cost of the column cap and the column beam cover and improve the workability.

It is a perspective view which shows the building exterior structure provided with the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is a perspective view which shows the connection member (bracket) of the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is a side view which shows the connection member (bracket) of the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is a top view which shows the connection member (bracket) of the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is a figure which shows the attachment condition of the pillar cap and pillar beam cover of the connection structure of the pillar and beam which concern on one Embodiment of this invention. It is a figure which shows the attachment condition of the column beam cover of the connection structure of the column and beam which concerns on one Embodiment of this invention. It is a perspective view which shows the pillar cap of the connection structure of the pillar and beam which concerns on one Embodiment of this invention. It is a perspective view which shows the column beam cover of the connection structure of the column and beam which concerns on one Embodiment of this invention. It is a perspective view from the upper side which shows the connection structure of the conventional pillar and a beam. It is a perspective view from the lower side which shows the connection structure of the conventional pillar and a beam.

  Hereinafter, a column-beam connection structure according to an embodiment of the present invention will be described with reference to FIGS.

  Here, in the present embodiment, it is assumed that the pillar-to-beam connection structure B of the present invention is a connection structure of a column (column) 1 and a beam 2 that supports the roof portion 7 of the building external structure A such as a carport. Give an explanation.

  Specifically, as shown in FIG. 1, the building exterior structure A according to the present embodiment includes a plurality of columns 1 that are erected at predetermined intervals in the lateral direction T <b> 1, and rear ends of the columns 1 at the upper ends of the columns 1. A plurality of beams 2 that are end-connected and extended in a cantilevered manner in the front-rear direction T2, and are supported by the plurality of beams 2 and are installed in the lateral direction T1, and are arranged at intervals in the front-rear direction T2. A plurality of purlins 3, a plurality of rafters 4 supported by a plurality of purlins 3 and erected in the front-rear direction T2, spaced apart in the transverse direction T1, and supported by the rafters 4, provided on the roof surface The roof panel 5 is formed.

  In addition, a rear frame 15 that secures design properties or functions as a reed is attached to the rear end side of the roof portion 7 (the purlin forming the eaves bottom), and the front end portion of the roof portion 7 (the purlin forming the eaves tip) ) And the both sides of the roof portion 7 (the end rafter 4), a front frame 16 and a side frame 17 for securing design properties are attached.

  And this building external structure A is formed using the hollow-shaped (substantially square tubular in this embodiment) aluminum shape material which the support | pillar 1 and the beam 2 each formed, for example by extrusion molding. Moreover, these support | pillar 1 and the beam 2 are connected using the bracket (connection member) 20 formed in the substantially reverse L shape.

  As shown in FIGS. 2 to 4 and 5, the bracket 20 of the column-beam connection structure B of the present embodiment is made of metal, is formed into a substantially rectangular tube, and extends linearly in the vertical direction T3. The column-side fitting portion 20a is formed in a substantially rectangular tube shape, and the rear end is connected to the upper end of the column-side fitting portion 20a so as to be linear at a predetermined angle corresponding to the angle of the roof portion 7 (beam 2). An extended beam-side fitting portion 20b is provided to form a substantially inverted L shape.

  In the column-beam connection structure B of this embodiment, the column-side fitting portion 20a is fitted into the hollow portion from the upper end portion 1a side of the column 1 and the beam-side fitting portion 20b is connected to the rear end of the beam 2. The beam 2 is connected to the support column 1 in a cantilevered state by the bracket 20 by being fitted in the hollow portion on the side.

  Further, a bolt insertion hole 21 is formed through the upper end 1a side of the column 1 and the column side fitting portion 20a of the bracket 20, and the column side fitting of the bracket 20 from the upper end portion 1a side of the column 1 into the hollow portion. The bolt 20 is inserted into the bolt insertion hole 21 of the column-side fitting portion 20a in a state where the portion 20a is fitted, and the bracket 20 is fixed to the column 1 by inserting and fastening the bolt 22 into the bolt insertion hole 21. Has been.

  Further, as shown in FIGS. 5 and 6, the support column 1 is recessed from the upper end portion 1 a to the lower end portion side at the upper end portion 1 a side and substantially in the center in the width direction of the side surface facing the extending direction (front) of the beam 2, A notch 8 is formed penetrating from the inner surface to the outer surface. Thereby, in the column-to-beam connection structure B of the present embodiment, when the column-side fitting portion 20a of the bracket 20 is fitted to the column 1, the column-side fitting portion 20a is fitted to the notch portion 8, and the column side The upper end portion of the fitting portion 20 a can be disposed at substantially the same height as the upper end portion 1 a of the support column 1.

  Further, the column-to-beam connection structure B of this embodiment is attached to the upper end 1a of the column 1 and surrounds the beam 2 and the column cap 23 that closes and covers the opening of the upper end 1a of the column 1 and the bracket 20. And a column beam cover 24 that covers the joint portion 10 between the peripheral portion of the notch portion 8 of the column 1 and the rear end portion of the beam 2.

  On the other hand, in the column-to-beam connection structure B of the present embodiment, as shown in FIGS. 2 to 4, the column-side fitting portion 20 a is fitted to the column 1 and provided on both sides of the notch portion 8. The surface 25 of the column-side fitting portion of the bracket 20 facing the side wall piece 1b of the support column 1 that forms the cutout portion 8 in the front-rear direction T2 gradually increases toward the center in the front-rear direction T2 as it goes upward from below. It is formed as an inclined surface that inclines.

  Thereby, with the column side fitting portion 20a fitted to the support column 1, the side wall piece 1b on both sides of the notch 8 of the support column 1 and the rear end of the beam 2 and the inclined surface 25 of the bracket 20 are arranged. Between the front-back direction T2, the clearance gap H whose width | variety becomes large gradually as it goes upwards from the downward direction is provided.

  Further, the inclination angle θ of the inclined surface 25 of the column-side fitting portion 20a of the bracket 20 and, in turn, the size of the gap H between the side wall piece 1b on both sides of the notch portion 8 of the column 1 and the inclined surface 25 of the bracket 20. However, even if the bracket 20 is displaced due to a large load acting on the roof 7 and the beam 2 due to snow, strong winds, etc., the inclined surface 25 of the bracket 20 does not contact the side wall piece 1b of the column 1. Is set to In other words, the inclined surface 25 of the column side fitting portion 20a is set and formed according to the set maximum stress and the set maximum displacement that act on the bracket 20.

  In this embodiment, the beam 2 is fitted in the beam side fitting portion 20b of the bracket 20 and installed at a predetermined position, and the rear end thereof is the notch portion 8 of the support column 1 (the side surface on the front side of the support column 1). ) And the front-rear direction T2.

  Moreover, as shown in FIG.2 and FIG.3, the bracket 20 of this embodiment is formed with a plurality of slits 26 notched upward from the lower end on the lower end side of the column side fitting portion 20a. The lower end side of the column-side fitting portion 20a is divided into a plurality of portions in the circumferential direction with the slits 26 interposed therebetween.

  Next, the pillar cap 23 of the present embodiment is made of, for example, resin, and as shown in FIGS. 5 and 7, the columnar cap 23 hangs downward from the periphery of the top plate portion 23 a and the top plate portion 23 a and extends in the circumferential direction. The side wall 23b is formed so as to be detachably fixed and attached to the upper end 1a of the support column 1 by being fitted inside the side wall 23b.

  Further, the column cap 23 is recessed from the lower end to the top plate portion 23a in a side wall portion 23b facing forward in a state where the column cap 23 is attached to the upper end portion 1a of the support column 1 and is notched with a width larger than the width of the beam 2 23c is formed, and is attached to the upper end 1a of the support column 1 and the beam 2 is fitted into the recess 23c.

  Furthermore, the pillar cap 23 is formed with a through hole 23d penetrating from the upper surface to the lower surface on the front end side and both sides in the width direction of the top plate portion 23a, and communicates with each through hole 23d on the lower surface of the top plate portion 23a. Thus, a nut (not shown) is provided integrally (with a nut portion integrally formed).

  Furthermore, the column cap 23 protrudes forward from the front end of the top plate portion 23a to form a substantially rectangular flat plate-shaped engagement receiving portion 23e. In addition, the engagement receiving portion 23e is formed with engagement grooves 23f that open to the front end in the protruding direction, are recessed from the side end toward the center in the width direction, and extend from the front end to the rear end on both sides in the width direction.

  Next, the column beam cover 24 of the present embodiment is made of, for example, resin, and as illustrated in FIGS. 5, 6, and 8, a pair of lower frames 24 a and a pair extending upward from both ends of the lower frame 24 a. The side frame 24b is formed in a substantially U shape. Further, the column beam cover 24 is provided with an exterior portion 24c that protrudes outward in the downward direction from the lower frame 24a and outward in the lateral direction from the pair of side frames 24b and is connected in the circumferential direction.

  Further, the column beam cover 24 of the present embodiment is formed with an engaging portion 24d that protrudes inward in the lateral direction from the upper end of each side frame 24b. Further, on the upper end side of each side frame 24b, a fixing piece 24f provided with a through hole 24e that protrudes from the engagement portion 24d to the outside in the depth thickness direction (rear side in the front-rear direction T2) and penetrates from the upper surface to the lower surface is integrally formed. Is provided.

  Further, the column beam cover 24 of the present embodiment is provided with a locking piece 24g protruding from the inner surface of the exterior portion 24c on the lower end side.

  The column beam cover 24 configured as described above is not formed in an annular shape as in the prior art, but is formed in a U-shape, so that the pair of side frames 24b are elastically deformed outward and expanded. The beam 2 is inserted so as to surround the beam 2 from below. Then, the column beam cover 24 is slid in the engagement groove 23f of the engagement receiving portion 23e of the column cap 23 while being slid to the connecting portion 10 side between the peripheral portion of the notch portion 8 of the column 1 and the rear end portion of the beam 2. The column beam cover 24 is positioned at a predetermined position by engaging the joint portion 24d.

  At this time, the locking piece 24g provided on the lower end side of the column beam cover 24 is locked to the notch portion 8 of the column 1 so that the lower end side of the column beam cover 24 is positioned and held.

  When the column beam cover 24 is thus positioned, the through hole 24e of the fixing piece 24f of the column beam cover 24 communicates with the through hole 23d of the top plate portion 23a of the column cap 23 and the screw hole of the nut. The column beam cover 24 and the column cap 23 are integrally connected by inserting and screwing the bolts 27. The column cap 23 fitted to the column 1 and the column beam cover 24 fitted to the beam 2 are connected by the bolt 27, so that the column cap 23 and the column beam cover 24 are not connected to the bracket 20. Is not detached from the support column 1 or the beam 2, and even if the bracket 20 is displaced, it is not detached from the support column 1 or the beam 2.

  Further, when the column beam cover 24 is positioned and attached at a predetermined position in this way, the exterior portion 24c of the column beam cover 24 overlaps the cut end portion of the notch portion 8 of the column 1 or the recess 23c of the column cap 23, The design of the joint portion 10 is ensured by the exterior portion 24c.

  Further, the design of the upper end 1a side of the support column 1 is also secured by the column cap 23 attached to the upper end portion 1a of the support column 1.

  On the other hand, in the column-to-beam connection structure B of the present embodiment, the inclination angle θ of the inclined surface 25 of the column-side fitting portion 20a of the bracket 20 and the side wall pieces 1b on both sides of the notch portion 8 of the column 1 are as follows. A predetermined gap H is provided between the bracket 20 and the inclined surface 25.

  Further, the column cap 23 is not connected to the bracket 20 as in the prior art, and the bracket 20 is not restrained by the column cap 23.

  For this reason, even when a large load acts on the roof portion 7 and thus the beam 2 due to snow, strong winds, etc., the bracket 20 is displaced, and the inclined surface 25 of the bracket 20 abuts against the side wall piece 1b of the column 1. There is no. This prevents the side wall piece 1b on both sides of the notch 8 of the support column 1 from being deformed or damaged as in the prior art, and the column cap 23 to hold the bracket 20 firmly so as not to be displaced. There is no need to form it with a strong metal.

  Therefore, in the column-beam connection structure B of the present embodiment, the side wall piece 1b forming the notch portion 8 of the column 1 and the surface 25 of the column-side fitting portion 20a of the bracket 20 facing the front-rear direction T2 are provided. A load is applied to the roof portion 7 and the beam 2 due to snow, strong winds, etc., and is formed as an inclined surface inclined at an angle corresponding to the assumed maximum stress acting on the bracket 20. For this reason, even if a load is applied to the beam 2 and the bracket 20 is displaced, the column-side fitting portion 20a does not come into contact with the side wall piece 1b of the column 1, and the column-side fitting portion 20a does not contact the side wall piece 1b as in the conventional case. It is possible to reliably prevent deformation and damage to the support column 1 due to contact.

  Thereby, it is not necessary to fix the column cap 23 which is formed firmly like the conventional one to the bracket 20 and the column 1 so that the bracket 20 is not moved by being pressed by the column cap 23, that is, the upper end portion of the column 1. It is only necessary to cover 1a to ensure the appearance, and it is possible to use a column cap 23 made of resin or the like. Also, the column beam cover 24 does not need to be fixed to the bracket 20 and the column 1, and the column beam cover 24 made of grease or the like can be used so that the bracket 20 can be displaced. Therefore, it is possible to reduce the cost and improve the workability of the column cap 23 and the column beam cover 24 as compared with the conventional case.

  Here, when the displacement of the bracket 20 is allowed when a large load is applied to the roof portion 7 and thus the beam 2 due to snow or strong wind as in this embodiment, the lower end of the column-side fitting portion 20a of the bracket 20 becomes the column 1. The inner surface of the support 1 may be pressed and whitening may occur on the outer surface of the column 1.

  On the other hand, in this embodiment, the lower end side of the column-side fitting portion 20a of the bracket 20 is formed by being divided into a plurality of portions in the circumferential direction by providing the slits 26. For this reason, a large load acts on the roof portion 7 and thus the beam 2 due to snow, strong wind, etc., and the bracket 20 is displaced, the lower end of the column side fitting portion 20a of the bracket 20 presses the inner surface of the column 1, and the column side The split piece on the lower end side of the fitting portion 20a is deformed. Thereby, it can control so that the pressing force to the inner surface of the support | pillar 1 by the lower end of the pillar side fitting part 20a may become small, and the possibility that whitening may arise on the outer surface of the support | pillar 1 can be eliminated.

  As mentioned above, although one Embodiment of the connection structure of the pillar and beam which concerns on this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning.

  For example, in the present embodiment, the slit 26 is provided on the lower end side of the column side fitting portion 20a of the bracket (connecting member) 20 to prevent whitening of the column 1, but the column side fitting portion 20a You may make it prevent whitening of the support | pillar 1 by inserting interposed materials, such as rubber | gum, between the support | pillars 1 or chamfering the column side fitting part 20a, and carrying out R process.

  In the present embodiment, the column-beam connection structure according to the present invention is described as connecting the beam to the support in a cantilever state. On the other hand, for example, when installing beams on a pair of columns arranged on both sides of the roof, such as a carport for two units (for multiple units) (when both ends of the beam are fixedly supported on the columns) Of course, the column-beam connection structure according to the present invention may be applied. In this case, the same effect as that of the present embodiment can be obtained.

DESCRIPTION OF SYMBOLS 1 Support | pillar 1a Upper end part 1b Side wall piece part 2 Beam 3 Purlin 4 Rafter 5 Roof panel 6 Conventional bracket (connection member)
6a Column side fitting portion 6b Beam side fitting portion 7 Roof portion 8 Notch portion 9 Conventional column beam cover 10 Interlocking portion 11 Conventional column cap 15 Rear frame 16 Front frame 17 Side frame 20 Bracket (connection member)
20a Column side fitting portion 20b Beam side fitting portion 21 Bolt insertion hole 22 Bolt 23 Column cap 23a Top plate portion 23b Side wall portion 23c Recessed portion 23d Through hole 23e Engagement receiving portion 23f Engaging groove 24 Column beam cover 24a Lower frame 24b Side frame 24c Exterior portion 24d Engagement portion 24e Through hole 24f Fixed piece 24g Locking piece 25 Slope 26 Slit A Building exterior structure B Column-to-beam connection structure H Clearance T1 Lateral direction T2 Lateral direction T3 Vertical direction

Claims (2)

A pillar-to-beam coupling structure for connecting a column and a beam formed in a hollow shape using a coupling member,
The connecting member is extended in the vertical direction, and a column-side fitting portion that fits into the hollow portion from the upper end portion of the column, and a rear end connected to the upper end side of the column-side fitting portion with a predetermined angle And is formed in a substantially inverted L shape with a beam-side fitting portion fitted in the hollow portion from the rear end portion side of the beam.
The support column is formed with a notch part that is recessed from the upper end part to the lower end part side on the side facing forward, and into which the beam side fitting part fits,
The column side facing in the front-rear direction in a state where the column side fitting portion is fitted to the column on the side wall piece portion of the column that is provided on both sides of the notch portion and forms the notch portion. The surface of the fitting portion is formed as an inclined surface that gradually inclines in the front-rear direction center side from the bottom toward the top in accordance with the assumed maximum stress acting on the connecting member,
A column / beam connection structure, wherein a gap is provided between the side wall pieces on both sides of the notch and the inclined surface of the connection member. In the connection structure of the pillar and beam of Claim 1,
A column cap that closes the upper end of the column, a notch portion of the column, the beam-side fitting portion, and a mating portion of the beam-side fitting portion that is supported by the beam-side fitting portion. A column beam cover to cover,
A column / beam connection structure in which the column cap and the column beam cover are attached in a state of being separated from the connection member.

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