Connection structure

Abstract

To provide a joint structure that can easily join a beam-like member of a grape trellis to a pillar of a building. [Solution] This is a connection structure 10 between a column 2 and a grape trellis 7 in a building 1 having a column 2 and a beam 3, characterized in that the connection structure 10 has a frame body 11 surrounding the column 2, a hanging member 12 whose upper end is connected to the beam 3 and whose lower end is connected to the frame body 11, and a connecting portion 13 provided on the frame body 11 and to which the grape trellis 7 is connected.

Description

[Technical Field]

[0001] The present invention relates to a structure for connecting a column and a grape trellis in a building having columns and beams. [Background technology]

[0002] Known examples of buildings with columns and beams include a grape trellis suspended from the beams (see, for example, Patent Document 1). The grape trellis is made up of multiple beam-like members in a lattice pattern and is used for various purposes, such as a base for suspending a suspended ceiling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-101479 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, grape trellises may be installed in existing buildings, such as logistics warehouses, when a new suspended ceiling is installed in part of the building to be used as an office. In this case, the grape trellises must be suspended and supported by beams, and the ends of some of the beam-like members of the grape trellises must be joined to the columns. Therefore, connecting members for connecting the beam-like members must be installed on the columns later.

[0005] However, in order to install connecting members on columns through post-construction, for example, if the columns are made of reinforced concrete, it is necessary to drill holes in the columns and secure anchor bolts in the holes.In addition, there is a problem in that the construction is complicated, as it is necessary to check the strength of the columns after construction to clear legal restrictions.

[0006] The present invention has been made in consideration of such problems, and its purpose is to provide a joint structure that allows the beam-like members of a grape trellis to be easily joined to the columns of a building. [Means for solving the problem]

[0007] The connection structure of the present invention is a connection structure between a pillar and a grape trellis in a building having pillars and beams, and is characterized by having a frame body surrounding the pillar, a hanging member whose upper end is connected to the beam and whose lower end is connected to the frame body, and a connecting portion provided on the frame body and to which the grape trellis is connected.

[0008] In the above-mentioned configuration of the connection structure of the present invention, it is preferable that the hanging member has a rod portion whose lower end is connected to the frame body, a lower connecting plate portion connected to the upper end of the rod portion and positioned below the lower flange of the beam made of H-shaped steel, and an upper connecting plate portion positioned above the lower flange and connected to the lower connecting plate portion with bolts on the widthwise outer side of the lower flange. [Effects of the Invention]

[0009] According to the present invention, a joint structure can be provided that allows the beam-like members of a grape trellis to be easily joined to the columns of a building. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a part of a building in which a joint structure according to one embodiment of the present invention is adopted. [Figure 2] FIG. 2 is a plan view of a portion of the grape trellis shown in FIG. [Figure 3] FIG. 2 is an enlarged view of a range A in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 5] FIG. 5 is an enlarged view of a range C in FIG. 4. [Figure 6] FIG. 4 is a cross-sectional view taken along line DD in FIG. [Figure 7] FIG. 4 is an enlarged view of a range E in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a detailed description will be given of an example of a joint structure according to one embodiment of the present invention with reference to the drawings.

[0012] The building 1 shown in Fig. 1 has a skeleton 4 that has multiple columns 2 and multiple beams 3 that span between adjacent columns 2. Although Fig. 1 shows only some of the columns 2 and beams 3 that make up the skeleton 4 of the building 1, the building 1 is configured as a building used as a logistics warehouse, equipped with other columns 2, other beams 3, floor slabs 5, exterior walls, interior walls (not shown), etc.

[0013] As long as the building 1 has columns 2 and beams 3, it is not limited to buildings used as logistics warehouses, but may be any type of building, such as an office building or other building used for other purposes.

[0014] The multiple columns 2 are each a rectangular column made of reinforced concrete (RC) with a square cross section in the horizontal direction.

[0015] In this embodiment, the columns 2 are reinforced concrete square columns, but they are not limited to this and may be made of various materials and shapes, such as square steel pipes. The number and arrangement of the columns 2 installed in the building 1 can also be changed as appropriate.

[0016] Each of the multiple beams 3 is made of H-shaped steel. A portion of each beam 3 is configured with a joint portion 3a, where one portion is embedded in the column 2 and the other portion protrudes from the column 2. Each beam 3 supports a floor slab 5 on a predetermined floor of the building 1. In addition, multiple small beams 6 are installed between adjacent beams 3 to support the floor slab 5.

[0017] In this embodiment, the beams 3 are formed of H-shaped steel, but are not limited to this and may be made of various materials and shapes, such as reinforced concrete. The number and arrangement of the beams 3 provided in the building 1 can also be changed as appropriate.

[0018] A grape trellis 7 is provided in the building 1. The grape trellis 7 is used as a base for suspending and supporting a suspended ceiling when a new suspended ceiling is installed in part of a predetermined floor of the building 1, which is used as a logistics warehouse, and the part is used as an office.

[0019] As shown in FIG. 2, the grape trellis 7 is configured in a lattice shape by combining multiple parallel beam members 7a arranged at intervals with multiple parallel beam members 7b arranged at intervals in mutually perpendicular directions, with horizontal diagonal members 7c maintaining a planar shape. The grape trellis 7 is supported by multiple hanging members 8 connected to the lower flanges 3b of the beams 3, and is suspended below the beams 3. In this embodiment, the hanging members 8 are formed from angle irons (angles), but various other types, such as rods, may also be used. The grape trellis 7 may also be suspended from the sub-beams 6 by multiple other hanging members.

[0020] Of the multiple beam members 7a that make up the grape trellis 7, some of the beam members 7a that are adjacent to the pillars 2 are joined to the pillars 2 by joint structures 10 according to this embodiment.

[0021] As shown in FIG. 3, the connection structure 10 according to this embodiment includes a frame body 11, a hanging member 12, and a connecting portion 13.

[0022] As shown in Fig. 4, the frame body 11 is configured in a ring shape and is attached to the column 2 so as to surround the periphery of the column 2. In this embodiment, the frame body 11 is configured in a ring shape by combining four side members 11a, each made of angle iron, so that they form a square in a plan view that corresponds in size to the outer shape of the column 2. More specifically, each side member 11a is arranged such that one side extends parallel to the outer peripheral surface of the column 2 and the other side extends horizontally from above the one side, and the members are connected to each other at their longitudinal ends.

[0023] When the frame body 11 is attached to the pillar 2, one side of each side member 11a is in contact with the outer circumferential surface of the pillar 2. In other words, the frame body 11 is capable of transmitting a horizontal load applied to it to the pillar 2.

[0024] In this embodiment, the four connecting portions of the four side members 11a are connected to each other at four locations using fastening means 11b consisting of bolts and nuts. With this configuration, the four unassembled side members 11a can be placed around the pillars 2 of an existing building 1, and then adjacent side members 11a can be connected by the fastening means 11b, making it possible to easily attach the frame body 11 to the pillars 2.

[0025] As shown in FIG. 5, both longitudinal ends of each side member 11a are provided with bolt holes 11c through which bolts of the fastening means 11b are inserted. An extension plate 11d is fixed by welding to the longitudinal end of one of the side members 11a connected to each other by the fastening means 11b, and the bolt holes 11c are provided in the extension plate 11d. Each bolt hole 11c is an elongated hole extending along the longitudinal direction of the side member 11a. This allows adjacent side members 11a to be joined to each other by the fastening means 11b while all side members 11a abut against the outer circumferential surface of the column 2, even if the column 2 has distortion or other defects on its outer circumferential surface. The joining means for adjacent side members 11a is not limited to the fastening means 11b consisting of bolts and nuts described above. Various means or configurations may be used, such as joining by integrating the side members by on-site welding.

[0026] In this embodiment, the frame body 11 has a shape in which four side members 11a are combined to form a square in accordance with the cross-sectional shape of the column 2, but the shape is not limited to this and may be various shapes as long as it is a shape that matches the cross-sectional shape of the column 2. Also, in this embodiment, the four side members 11a that make up the frame body 11 are formed from angle iron (angle), but the shape is not limited to this and may be formed from other steel materials such as channel steel, or may be formed from materials other than steel.

[0027] As shown in Figure 3, the upper end of the hanging member 12 is connected to the beam 3, and the lower end is connected to the frame body 11. In other words, the hanging member 12 supports the frame body 11 by suspending it from the beam 3. The frame body 11 is supported by the hanging member 12 and is held at a predetermined height at which the grape trellis 7 on the pillar 2 is installed.

[0028] As shown in Figure 4, two hanging members 12 corresponding to each of two adjacent side members 11a are provided between the beam 3 and the frame body 11, and the frame body 11 is suspended from the hanging members 12 at two locations. Note that it is sufficient that the frame body 11 is suspended from the hanging members 12 at at least one side member 11a, and the locations at which the frame body 11 is suspended from the hanging members 12 can be changed as appropriate, for example, by configuring the frame body 11 to be suspended from the hanging members 12 at all four side members 11a. This makes it possible to use a planar "+"-shaped, "T"-shaped, or "L"-shaped joint in which the beam-like member 7a and the beam-like member 7b are simultaneously connected to the column 2.

[0029] 3 and 6, in this embodiment, the hanging member 12 includes a rod portion 12a having a lower end connected to the frame body 11, a lower connecting plate portion 12b connected to the upper end of the rod portion 12a and disposed below the lower flange 3b of the beam 3 made of H-shaped steel, and an upper connecting plate portion 12d disposed above the lower flange 3b and connected to the lower connecting plate portion 12b by bolts 12c on the outer side of the lower flange 3b in the width direction. More specifically, a connecting plate portion 12e is fixed by welding to the lower surface of the lower connecting plate portion 12b, and the rod portion 12a is fixed to the connecting plate portion 12e by bolts 12g at a bracket 12f provided at the upper end of the rod portion 12a. Furthermore, spacer 12h is disposed between lower connecting plate portion 12b and upper connecting plate portion 12d, and bolt 12c passes through lower connecting plate portion 12b, spacer 12h, and upper connecting plate portion 12d and nuts 12i are screwed together to secure lower connecting plate portion 12b, spacer 12h, and upper connecting plate portion 12d to lower flange 3b. With this configuration, hanging member 12 can be connected to beam 3 of existing building 1 without processing such as drilling holes in the beam 3.

[0030] As shown in Figure 7, the connecting portion 13 is provided on a side member 11a that faces the beam member 7a of the grape trellis 7 of the frame body 11. The connecting portion 13 is made of a steel plate and has an upper portion 13a that protrudes above the side member 11a and a lower portion 13b that extends horizontally from the side member 11a toward the beam member 7a, and is fixed to the side member 11a by welding.

[0031] A bracket 12j is provided at the lower end of the rod portion 12a of the hanging member 12, and the lower end of the rod portion 12a is fixed to the upper portion 13a of the connecting portion 13 at the bracket 12j using a bolt 12k.

[0032] As shown in Figure 3, rod portion 12a is a threaded rod with a male thread on its outer periphery, and is provided with a turnbuckle 12m at its vertical midpoint, allowing the length between its upper and lower ends to be adjusted by rotating turnbuckle 12m. With this configuration, the height of frame 11 suspended and supported by hanging member 12 can be easily adjusted to a height corresponding to grape trellis 7. Note that rod portion 12a may also be configured without turnbuckle 12m.

[0033] As shown in Figures 3, 4, and 7, the grape trellis 7 is connected to a connecting portion 13 provided on the frame body 11. In this embodiment, the longitudinal end of the beam-like member 7a that constitutes the grape trellis 7 is fixed to the lower portion 13b of the connecting portion 13 using two bolts 13c. As shown in Figure 4, a beam-like member 7b of the grape trellis 7 is connected in a similar configuration to another connecting portion 13 provided on another side member 11a of the frame body 11. With this configuration, the grape trellis 7 is joined to the frame body 11 via the connecting portions 13 at the beam-like members 7a and 7b. The frame body 11 is attached so as to abut against the outer peripheral surface of the column 2, so the grape trellis 7 is joined so that a horizontal load is transmitted to the column 2 via the frame body 11.

[0034] As described above, the connection structure 10 of this embodiment has a configuration comprising a ring-shaped frame body 11 surrounding the column 2, a hanging member 12 whose upper end is connected to the beam 3 and whose lower end is connected to the frame body 11, and a connecting portion 13 provided on the frame body 11 and to which the grape trellis 7 is connected. In other words, the frame body 11 attached to the column 2 so as to surround the column 2 is supported by being suspended from the beam 3 by the hanging member 12, and the grape trellis 7 is connected to the connecting portion 13 provided on the frame body 11. With this configuration, when installing a new grape trellis 7 in an existing building 1, the connection structure 10 according to this embodiment does not require post-construction such as drilling holes in the pillar 2 and inserting anchor bolts into the holes to fasten the grape trellis 7 to the pillar 2. Instead, the grape trellis 7 can be joined to the pillar 2 with the simple process of attaching the frame 11 to the pillar 2, connecting the upper end of the hanging member 12 to the beam 3 and the lower end to the frame 11, and connecting the beam-like members 7a, 7b of the grape trellis 7 to the connecting portions 13 provided on the frame 11. Therefore, by employing the connection structure 10 according to this embodiment, a new grape trellis 7 can be easily installed in an existing building 1.

[0035] Furthermore, according to the connection structure 10 of this embodiment, the grape trellis 7 can be joined to the pillar 2 without any processing such as drilling holes in the pillar 2 to fix anchor bolts, so the strength of the pillar 2 is not reduced when the grape trellis 7 is installed.

[0036] Furthermore, in the connection structure 10 according to this embodiment, the hanging member 12 is configured to include a rod portion 12a whose lower end is connected to the frame body 11, a lower connecting plate portion 12b connected to the upper end of the rod portion 12a and positioned below the lower flange 3b of the beam 3 made of H-shaped steel, and an upper connecting plate portion 12d positioned above the lower flange 3b and connected to the lower connecting plate portion 12b with bolts 12c on the outer side of the lower flange 3b in the width direction. This eliminates the need for processing, such as drilling holes in the beam 3, to connect the hanging member 12, when installing a new grape trellis 7 in an existing building 1, and allows the new grape trellis 7 to be easily installed in the building 1. Furthermore, because the grape trellis 7 can be joined to the column 2 without processing, such as drilling holes in the beam 3, the strength of the beam 3 is not reduced when the grape trellis 7 is installed.

[0037] Furthermore, according to the connection structure 10 of this embodiment, the grape trellis 7 can be joined to the column 2 without any processing such as drilling holes in the column 2 or beam 3 to secure anchor bolts. Therefore, the building 1 can be easily restored to its original state before the grape trellis 7 was installed by simply removing the grape trellis 7 from the connecting part 13, removing the frame body 11 from the column 2, and removing the hanging member 12 from the beam 3.

[0038] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0039] 1 Building 2 pillars 3 beams 3a Joint part 3b Lower flange 4 skeleton 5 Floor slab 6 small beam 7 Grape trellis 7a Beam member 7b Beam-like member 7c Diagonal 8 Hanging material 10. Connection structure 11 Frame 11a Side member 11b Fastening means 11c Bolt hole 11d extension plate 12 Hanging member 12a Rod part 12b Lower connecting plate 12c bolt 12d Upper connecting plate part 12e Connecting plate part 12f bracket 12g bolt 12h spacer 12i nut 12j bracket 12k volts 12m turnbuckle 13 Connecting part 13a Upper part 13b Lower part 13c bolt

Claims

1. A structure for connecting a column and a grape trellis in a building having a column and a beam, A frame body surrounding the pillar; a hanging member having an upper end connected to the beam and a lower end connected to the frame; A connecting structure characterized by having a connecting portion provided on the frame body and to which the grape trellis is connected.

2. The hanging member is a rod portion whose lower end is connected to the frame body; A lower connecting plate portion connected to the upper end of the rod portion and arranged under the lower flange of the beam made of H-shaped steel; 2. The connection structure according to claim 1, further comprising: an upper connecting plate portion disposed on the lower flange and connected to the lower connecting plate portion by bolts on the outer side of the lower flange in the width direction.

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