Building unit connection structure

Abstract

To provide a method for preventing strength of a building from being decreased even if a column at a part where building units face each other is omitted when the building units are disposed at an interval.SOLUTION: A connection structure of a building unit 12 comprises: a first unit (building unit 12A) that is formed into a rectangular parallelepiped shape by a column-beam frame and has a first beam (beam 18) along one direction; a second unit (building unit 12B) that is formed into a rectangular parallelepiped shape by the column-beam frame and has a second beam (beam 18) disposed on the same straight line with the first beam; a stiffening beam 20 disposed from a central part of the first beam to a central part of the second beam so as to be in parallel with the first beam and the second beam; and a connection member 30 to connect the stiffening beam 20 with each of the first beam and the second beam. The stiffening beam 20 has a web 22 disposed in a vertical direction and flanges 24 protruding in a lateral direction from upper and lower ends of the web 22.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a connection structure for building units. [Background technology]

[0002] The following Patent Document 1 describes a building unit connection structure that can reinforce adjacent building units and building units arranged at intervals while maintaining the size of the living space and the degree of design freedom. In this building unit connection structure, a reinforcing beam is installed from the outer end of the first building unit to the outer ends of the third building unit and the fourth building unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-163864 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned Patent Document 1 describes that by bridging the first to fourth building units with reinforcing beams, the strength of the first to fourth building units can be maintained even if the columns at the butted portions of the first to fourth building units are removed. However, the beams that span the length between the ends of each unit are heavy, and it is necessary to consider the deflection caused by the beam's own weight and the strength of the columns that support the beams. In addition, long beams are expensive. For this reason, there is a need for another method that does not reduce the strength of the building even if the columns at the opposing portions of the building units are omitted when the building units are arranged with a gap between them.

[0005] Taking into consideration the above facts, the present invention aims to provide a method in which, when building units are arranged at intervals, the strength of the building is unlikely to be reduced even if the columns in the areas where the building units face each other are omitted. [Means for solving the problem]

[0006] The connecting structure of a building unit of a first embodiment comprises a first unit formed into a rectangular parallelepiped shape by a column-beam frame and having a first beam along one direction, a second unit formed into a rectangular parallelepiped shape by a column-beam frame and having a second beam arranged in the same straight line as the first beam and arranged at a distance from the first unit in the one direction, a stiffening beam arranged parallel to the first beam and the second beam from the center of the first beam to the center of the second beam, and connecting members connecting the stiffening beam to each of the first beam and the second beam, and the stiffening beam has a web arranged in the vertical direction and a flange protruding laterally from the upper and lower ends of the web.

[0007] In the first embodiment of the building unit connection structure, a first unit and a second unit formed in a rectangular parallelepiped shape are arranged with a gap in one direction. The first beam of the first unit and the second beam of the second unit along the one direction are connected to a stiffening beam via a connecting member. Therefore, the first beam, the second beam, and the stiffening beam are integrated to form a main beam.

[0008] Here, the stiffening beam has a web extending in the vertical direction, which suppresses the deflection of the main beam.

[0009] In addition, the stiffening beams are provided with flanges that protrude laterally from the top and bottom ends of the webs, which helps to suppress lateral buckling of the girder.

[0010] This allows the girder to resist short-term and long-term loads even if the columns supporting the first beam and second beam, respectively, are omitted in the area where the first unit and second unit face each other.

[0011] The stiffening beams are arranged from the center of the first beam to the center of the second beam. In other words, if the columns at the portion where the first unit and the second unit face each other were omitted, the stiffening beams are arranged in the portion where the deflection would be larger than in other portions. The stiffening beams are also arranged in the center of the buckling length. This efficiently suppresses the deflection and lateral buckling of the main beam.

[0012] Thus, in this building unit connection structure, when the building units are arranged with spaces between them, even if the columns in the areas where the building units face each other are omitted, the strength of the building is unlikely to be reduced.

[0013] By placing the building units at intervals and eliminating the columns where the building units face each other, a large column-free space can be created inside the building.

[0014] The second aspect of the building unit connection structure is the building unit connection structure of the first aspect, in which the flanges are fixed to the web by welding and are divided into multiple parts along the longitudinal direction of the stiffening beam at each of the upper and lower ends of the web.

[0015] In the second embodiment of the building unit connection structure, the flange of the stiffening beam is fixed to the web by welding. Generally, welding joints can cause welding distortion. If the web is deformed when the upper flange is welded to the web, it becomes difficult to weld the lower flange. Such welding distortion is likely to occur when the weld length is long compared to the total length of the base material, as the tensile force becomes large.

[0016] Therefore, in the connection structure of this building unit, the flange is divided into multiple parts along the longitudinal direction of the stiffening beam at the upper and lower ends of the web, which shortens the welding length, disperses the tensile force, and suppresses welding distortion.

[0017] The third aspect of the building unit connecting structure is a building unit connecting structure of the first or second aspect, and comprises a first connection member to which the end of the first beam is fixed and to which a column can be joined, a second connection member to which the end of the second beam is fixed and to which a column can be joined, a first connecting plate connecting the stiffening beam and the first connection member, and a second connecting plate connecting the stiffening beam and the second connection member.

[0018] In the third embodiment of the building unit connection structure, the stiffening beam and the first connection member to which the end of the first beam is fixed are connected by a first connection plate, and similarly, the stiffening beam and the second connection member to which the end of the second beam is fixed are connected by a second connection plate.

[0019] Therefore, if another building unit is placed above the first and second units and a column is installed, the load of the column can be received by the first and second connecting plates and supported by the stiffening beams. This makes it easier to transmit the load to the girder smoothly compared to when the first and second connecting plates are not present. Effect of the Invention

[0020] According to the present disclosure, even if columns in the areas where building units face each other are omitted, the strength of the building is unlikely to be reduced. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view showing an example of an arrangement of building units to which a building unit connection structure according to the present embodiment is applied. [Diagram 2] FIG. 2 is a perspective view showing a connection structure of building units according to the present embodiment. [Diagram 3] 1A is a plan view showing the stiffening beam, connecting member, and connecting plate according to this embodiment, (B) is a cross-sectional view taken along line BB in (A), and (C) is a cross-sectional view taken along line CC in (A). [Figure 4] (A) is a plan view showing the state in which the stiffening beam of this embodiment is connected to a building unit via a connecting member and a connecting plate, (B) is a cross-sectional view along line BB in (A), and (C) is a cross-sectional view along line CC in (A). [Diagram 5] FIG. 13 is a plan view showing a modified example of the connecting plate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, a connection structure of building units according to an embodiment of the present disclosure will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers.

[0023] In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations or replacing them with different configurations, within the scope of the purpose of the present disclosure.

[0024] In each drawing, the directions indicated by the arrows X and Y are directions along a horizontal plane and are perpendicular to each other. The direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). The directions indicated by the arrows X, Y, and Z in each drawing are assumed to be mutually consistent.

[0025] <Building unit connection structure> (Building unit) 1 shows a state where a plurality of building units 12A, 12B, 12C, and 12D are arranged to form a building 10. The combination of building units 12A and 12B is an example of a combination of a first unit and a second unit of the present disclosure. Similarly, the combination of building units 12C and 12D is an example of a combination of a first unit and a second unit of the present disclosure.

[0026] In the following description, the building units 12A, 12B, 12C, and 12D may be simply referred to as the building units 12 unless otherwise specified.

[0027] Each building unit 12 is formed by joining a column 16 and a beam 18 to a joint member 14. The joint member 14 is a square steel pipe, and a beam 18 is joined to each of two mutually perpendicular side surfaces. The joint member 14 is also a member to which the column 16 can be joined.

[0028] The beams 18 are steel channel members, and both ends are joined to different joint members 14. The four joint members 14 and the four beams 18 form a frame F that is aligned in the X and Y directions, and this frame F is laid horizontally.

[0029] The frames F are arranged at intervals in the vertical direction, and each frame F is connected by a square steel pipe column 16. In other words, the upper or lower end of the column 16 is joined to the joint member 14 that constitutes the frame F. In this way, a building unit 12 formed into a rectangular parallelepiped shape by a column-beam structure is formed.

[0030] (Inter-placement of building units) The building units 12A and 12B are arranged at an interval in the X direction (an example of one direction in this disclosure). The building units 12C and 12D are arranged at an interval in the X direction. The building units 12A and 12C are arranged closely to each other in the Y direction. The building units 12B and 12D are arranged closely to each other in the Y direction.

[0031] The beam 18 (an example of a first beam in the present disclosure) along the X direction in the building unit 12A and the beam 18 (an example of a second beam in the present disclosure) along the X direction in the building unit 12B are arranged on the same straight line. Similarly, the beam 18 (an example of a first beam in the present disclosure) along the X direction in the building unit 12C and the beam 18 (an example of a second beam in the present disclosure) along the X direction in the building unit 12D are arranged on the same straight line.

[0032] In addition, the beams 18 along the Y direction in the building unit 12A and the beams 18 along the Y direction in the building unit 12C are arranged on the same straight line. Similarly, the beams 18 along the Y direction in the building unit 12B and the beams 18 along the Y direction in the building unit 12D are arranged on the same straight line.

[0033] (Upper floor configuration) The building unit 12 constitutes the first floor of the building 10. A building unit 12 of a similar configuration may be placed above this building unit 12 to constitute the second floor of the building 10. The building unit that constitutes the second floor may be placed above any one of the building units 12A, 12B, 12C, and 12D, or may be placed above all of them. The building unit connection structure of the present disclosure can also be applied to building units 12 placed on the second floor or higher.

[0034] (stiffened beam) In the corner of building unit 12A facing building units 12B and 12C, pillars 16 are omitted. Similarly, in the corner of building unit 12B facing building units 12A and 12D, in the corner of building unit 12C facing building units 12A and 12D, and in the corner of building unit 12D facing building units 12B and 12C, pillars 16 are omitted. In the following description, these corners may be referred to as corners J.

[0035] In order to prevent the strength of the building 10 from being reduced due to the omission of the columns 16, the building 10 is provided with a stiffening beam 20 as shown in Fig. 2. The stiffening beam 20 is arranged parallel to the beams 18, from the center of the beams 18 along the X direction in the building unit 12A to the center of the beams 18 along the X direction in the building unit 12B. Note that the "center" refers to the range located in the center when the beam 18 is divided into three equal parts in the longitudinal direction (axial direction).

[0036] Further, the stiffening beam 20 is arranged from a position sandwiched between the building units 12A and 12C to a position sandwiched between the building units 12B and 12D.

[0037] As shown in Figures 3(A) to (C), the stiffening beam 20 has a web 22 and a flange 24. As shown in Figure 3(B), the web 22 is a steel plate arranged along the vertical direction, and a flange 24 is welded to each of the upper and lower ends. The flange 24 is a plate material that protrudes laterally from the upper and lower ends of the web 22.

[0038] The flange 24 protrudes toward the building units 12A and 12C when sandwiched between the building units 12A and 12C shown in Fig. 1. Similarly, the flange 24 protrudes toward the building units 12B and 12D when sandwiched between the building units 12B and 12D.

[0039] 3(A), the flange 24 is divided into a plurality of portions along the longitudinal direction of the stiffening beam 20. In other words, the flange 24 has an intermittent portion V along the longitudinal direction of the stiffening beam 20.

[0040] Specifically, the flange 24 is provided with two notches V along the longitudinal direction of the stiffening beam 20, and the flange 24 is divided into three portions along the longitudinal direction of the stiffening beam 20.

[0041] The position where the intermittent portion V is provided is not particularly limited, but in the state shown in FIG. 2, it is provided at least at a position sandwiched between the building units 12A and 12C or a position sandwiched between the building units 12B and 12D.

[0042] 4(B) and (C), the beam depth of the stiffening beam 20 is greater than the beam depth of the beam 18 in the building unit 12. As shown by the arrow N, when a building unit 12 is placed above the building unit 12, the upper end of the stiffening beam 20 is placed between the beams 18 of the building unit 12 on the upper floor.

[0043] (Connection of stiffening beams - Connection members) 3(A) and (B), a connecting member 30 is connected to the stiffening beam 20. The connecting member 30 is a steel channel material arranged so that its longitudinal direction is along the vertical direction, and the tip of the flange is welded to the web 22.

[0044] Further, the connecting members 30 are provided at a plurality of locations on both sides of the web 22 in the longitudinal direction of the web 22. The number of connecting members 30 in the longitudinal direction of the web 22 may be appropriately changed depending on the length of the web 22, but in this embodiment, four connecting members are provided.

[0045] As shown in Fig. 4(A), the connecting member 30 connects the stiffening beam 20 to the beam 18 along the X direction in the building unit 12A and the beam 18 along the X direction in the building unit 12B. That is, the beams 18 in the building units 12A and 12B arranged on the lower side of the paper in Fig. 4(A) are connected by the stiffening beam 20 via the connecting member 30.

[0046] Similarly, the connecting member 30 connects the stiffening beam 20 to the beam 18 along the X direction in the building unit 12C and the beam 18 along the X direction in the building unit 12D. That is, the beams 18 in the building units 12C and 12D arranged on the upper side of the paper in FIG. 4(A) are connected by the stiffening beam 20 via the connecting member 30.

[0047] As shown in FIG. 4(B), in the building units 12A and 12C, the beams 18 disposed opposite each other are connected by stiffening beams 20 via connecting members 30.

[0048] Similarly, in the building units 12B and 12D, the beams 18 arranged opposite each other are connected by the stiffening beams 20 via the connecting members 30. The connecting members 30 and the beams 18 are connected by bolts (not shown).

[0049] In this manner, the stiffening beam 20 integrates the four beams 18 (beams 18 having one end disposed on the corner J (see FIG. 1) side) provided in each of the building units 12A, 12B, 12C, and 12D.

[0050] When a building unit 12 of the second floor is placed above a building unit 12, the beams 18 of the building unit 12 are placed above the beams 18 of the building unit 12 of the first floor. The stiffening beams 20 are not connected to the beams 18 of the building unit 12 of the second floor.

[0051] (Connection of stiffening beams - connecting plates) 3(A) and (C), a connecting plate 40 is connected to the stiffening beam 20. The connecting plate 40 is a steel material formed by bending into an L-shape, and a piece 40A along the vertical direction is welded to the web 22. On the other hand, a piece 40B along the horizontal direction protrudes in a direction perpendicular to the longitudinal direction of the stiffening beam 20.

[0052] There are provided four connecting plates 40. As shown in Fig. 4(A), each connecting plate 40 is joined to the joint member 14 located at the corner J of each of the building units 12A, 12B, 12C, and 12D.

[0053] As shown in Fig. 4(C), the joint member 14 provided at the upper end of the building unit 12 has a top plate 14A, which is a horizontally extending plate material, at its upper end. One piece 40B of the connecting plate 40 is joined to this top plate 14A with a bolt (not shown).

[0054] As shown by the arrow N, when a further building unit 12 is placed above the building unit 12, the piece 40B of the connecting plate 40 is sandwiched between the top plate 14A and the base plate 14B. The base plate 14B is a horizontal plate material provided at the lower end of the joint member 14 in the building unit 12 on the upper floor.

[0055] In this manner, the four connecting plates 40 connect the stiffening beams 20 to the joint members 14 located at the corners J of each of the building units 12A, 12B, 12C and 12D.

[0056] The combination of the joint member 14 of the building unit 12A and the joint member 14 of the building unit 12B at the corner J is one example of a combination of a first joint member and a second joint member in the present disclosure.

[0057] Similarly, the combination of the joint member 14 of the building unit 12C and the joint member 14 of the building unit 12D at the corner J is an example of a combination of a first joint member and a second joint member in the present disclosure.

[0058] Furthermore, the combination of the connecting plate 40 connected to the building unit 12A and the connecting plate 40 connected to the building unit 12B is one example of a combination of a first connecting plate and a second connecting plate in the present disclosure.

[0059] Similarly, the combination of the tie plate 40 connected to the building unit 12C and the tie plate 40 connected to the building unit 12D is an example of a combination of a first tie plate and a second tie plate in this disclosure.

[0060] <Action and Effects> In the building unit connection structure according to an embodiment of the present disclosure, as shown in FIG. 1, a first unit and a second unit (building units 12A and 12B, or building units 12C and 12D) formed in a rectangular parallelepiped shape are arranged with a gap in the X direction.

[0061] 4(A), the beams 18 of the building units 12A and 12B extending along the X direction are connected to the stiffening beams 20 via connecting members 30. Therefore, the beams 18 and stiffening beams 20 of the building units 12A and 12B are integrated to form a main girder.

[0062] Similarly, the beams 18 of the building units 12C and 12D along the X direction are also connected to the stiffening beams 20 via connecting members 30. Therefore, the beams 18 of the building units 12C and 12D are integrated into the main girder.

[0063] Here, as shown in Figures 3(B) and (C), the stiffening beam 20 is provided with a web 22 along the vertical direction, which suppresses deflection of the main beam.

[0064] In addition, the stiffening beam 20 is provided with flanges 24 that protrude laterally from the upper and lower ends of the web 22. This suppresses lateral buckling of the girder.

[0065] This allows the main girder to resist short-term and long-term loads even if the columns 16 supporting the beams 18 are omitted at the parts where building units 12A and 12B face each other and at the parts where building units 12C and 12D face each other (corner J).

[0066] The stiffening beam 20 is disposed from the center of the beam 18 along the X direction in the building unit 12A to the center of the beam 18 along the X direction in the building unit 12B. Similarly, the stiffening beam 20 is disposed from the center of the beam 18 along the X direction in the building unit 12C to the center of the beam 18 along the X direction in the building unit 12D.

[0067] That is, the stiffening beams 20 are arranged in the portions where the columns 16 are omitted and the deflection is larger than in other portions. Also, the stiffening beams 20 are arranged in the center of the buckling length. This effectively suppresses the deflection and lateral buckling of the main girder.

[0068] Thus, in this building unit connection structure, when the building units 12 are arranged with spaces between them, even if the columns 16 in the areas where the building units 12 face each other are omitted, the strength of the building 10 is unlikely to be reduced.

[0069] By arranging the building units 12 at intervals and omitting the columns 16 where the building units 12 face each other, a large column-free space can be formed inside the building 10.

[0070] In addition, in the connection structure of the building units disclosed herein, as shown in FIG. 3(B), the flange 24 of the stiffening beam 20 is fixed to the web 22 by welding. Generally, welding distortion may occur when joining by welding. If the web is deformed when the upper flange is welded to the web, it becomes difficult to weld the lower flange. Such welding distortion is likely to occur when the weld length is long compared to the overall length of the base material, as the tensile force becomes large.

[0071] Therefore, in the connection structure of this building unit, as shown in Fig. 3(A), the flange 24 is divided into multiple parts along the longitudinal direction of the stiffening beam 20 at each of the upper and lower ends of the web 22. This shortens the weld length, disperses the tensile force, and suppresses welding distortion.

[0072] In addition, in the connecting structure of the building units disclosed herein, as shown in Figures 4(A) and (C), the stiffening beam 20 and the joint member 14 to which the end of the beam 18 is fixed at the corner J are connected by a connecting plate 40.

[0073] Therefore, if a building unit 12 of an upper floor is placed above the building unit 12 and a column 16 is installed, the load of the column 16 can be received by the connecting plate 40 and supported by the stiffening beam 20. This makes it easier to transmit the load to the main beam smoothly compared to when there is no connecting plate 40.

[0074] <Other embodiments> In the above embodiment, as shown in Fig. 4(A), four connecting plates 40 are provided. And, each connecting plate 40 is joined to the joint member 14 located at the corner J of each of the building units 12A, 12B, 12C, and 12D, but the embodiment of the present invention is not limited to this.

[0075] 5, a connecting plate 50 may be provided between a joint member 14 located at a corner J of a building unit 12A and a joint member 14 located at a corner J of a building unit 12B. Similarly, a connecting plate 50 may be provided between a joint member 14 located at a corner J of a building unit 12C and a joint member 14 located at a corner J of a building unit 12D.

[0076] As a result, each connecting plate 50 connects the respective joint members 14 in two spaced apart building units 12. Such connecting plates 50 have a large effect of suppressing lateral buckling of the stiffening beams 20.

[0077] In the present disclosure, the connecting plates 40 and 50 may be omitted. Even if these are omitted, the flange 24 of the stiffening beam 20 can provide the effect of suppressing lateral buckling of the main beam. In this case, the protruding width of the flange 24 may be appropriately changed.

[0078] In addition, in the above embodiment, the flange 24 of the stiffening beam 20 is divided into a plurality of parts along the longitudinal direction of the stiffening beam 20, but the embodiment of the present invention is not limited to this. If the degree of welding distortion is small, the flange 24 may be disposed over the entire length of the stiffening beam 20.

[0079] In addition, in the above embodiment, the pillars 16 are omitted at the corners J, but the embodiment of the present invention is not limited to this. In the present disclosure, by providing the stiffening beams 20, it is possible to obtain an effect that the strength of the building 10 is unlikely to be reduced even if the pillars 16 are omitted, but for example, pillars or studs thinner than the pillars 16 may be arranged instead of the pillars 16.

[0080] In addition, in the above embodiment, the stiffening beam 20 connects the building units 12A, 12B, 12C, and 12D, but the embodiment of the present invention is not limited to this. For example, the building units 12C and 12D may be omitted, and the stiffening beam 20 may connect only the building units 12A and 12B. In such a case, the stiffening beam 20 is disposed on the outer periphery of the building 10. Therefore, when a garage or the like is formed on the outer periphery of the building 10, a wide opening can be formed. In this way, the present disclosure can be embodied in various aspects. [Explanation of symbols]

[0081] 12 Building Units 12A Building Unit (First Unit) 12B Building unit (second unit) 12C Building Unit (First Unit) 12D Building unit (second unit) 14 Joint members (first joint member, second joint member) 18 Beams (first beam, second beam) 20 Stiffening beam 22 Web 24 Flange 30 Connecting members 40 Connecting plate (first connecting plate, second connecting plate) 50 Connecting plate

Claims

1. a first unit formed in a rectangular parallelepiped shape by a column-beam frame and including a first beam extending along one direction; A second unit is formed in a rectangular parallelepiped shape by a column-beam frame, and includes a second beam arranged in the same straight line as the first beam, and is arranged at an interval from the first unit in the one direction; A stiffening beam arranged parallel to the first beam and the second beam from a central portion of the first beam to a central portion of the second beam; A connecting member connecting the stiffening beam to each of the first beam and the second beam; having The stiffening beam includes a web disposed in the vertical direction and a flange protruding laterally from the upper and lower ends of the web. Interlocking structure of building units.

2. The flange is fixed to the web by welding, and is divided into a plurality of portions at each of the upper and lower ends of the web along the longitudinal direction of the stiffening beam. A building unit connection structure according to claim 1.

3. A first joint member to which an end of the first beam is fixed and to which a column can be joined; A second joint member to which an end of the second beam is fixed and to which a column can be joined; a first connecting plate connecting the stiffening beam and the first connection member; a second connecting plate connecting the stiffening beam and the second connection member; Equipped with A connecting structure for building units according to claim 1 or 2.

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