Building connection structure and building connection method

Abstract

To suppress exceeding allowable deformation and allowable deformation speed of a vibration control damper.SOLUTION: A building connection structure comprises: a first building (building 10); a steel frame member 40 in the first building; a second building (building 20) facing the steel frame member 40; and vibration control dampers 30 and 32, which are positioned diagonally to a direction in which the first and second buildings face each other from above, connected to the second building at one end and to the steel frame member 40 at the other end.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a building connection structure and a building connection method. [Background technology]

[0002] The following Patent Document 1 describes a method for expanding a seismically isolated building in which a preceding building supported by seismic isolation devices and an expanded building supported by seismic isolation devices are connected by vibration-damping members. In this expansion method, vibration-damping members that function as dampers are placed between the preceding building and the expanded building in the direction in which these buildings face each other. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-214969 Summary of the Invention [Problem to be solved by the invention]

[0004] The vibration-damping member (vibration damper) of Patent Document 1 exhibits vibration-damping performance when the preceding building and the extension building are displaced relative to each other in a direction in which they face each other due to an earthquake force input into the building. On the other hand, when the preceding building and the extension building are displaced relative to each other in a direction "perpendicular" to the direction in which they face each other, the vibration-damping damper is less likely to exhibit deformation speed and is less likely to exhibit vibration-damping performance.

[0005] Furthermore, when the preceding building and the extension building are displaced relative to each other in opposing directions, the deformation of the vibration damper is approximately equal to the relative displacement of the preceding building and the extension building. Therefore, if the relative displacement of the preceding building and the extension building is greater than the allowable deformation of the vibration damping member, the vibration damper may be damaged. Furthermore, if the relative displacement speed of the preceding building and the extension building is greater than the allowable deformation speed of the vibration damper, the vibration damper may be damaged.

[0006] In consideration of the above, an object of the present invention is to make it difficult for the allowable deformation amount and allowable deformation speed of a vibration damper to be exceeded. [Means for solving the problem]

[0007] The building connection structure of claim 1 comprises a first building, a steel frame member provided on the first building, a second building arranged opposite the steel frame member, and a vibration damper arranged diagonally with respect to the direction in which the first building and the second building face each other when viewed from above, with one end connected to the second building and the other end connected to the steel frame member.

[0008] In the building connection structure of claim 1, the vibration damper is disposed obliquely relative to the direction in which the first building and the second building face each other when viewed from above.

[0009] Therefore, the vibration damper can exert vibration control performance both when the first building and the second building are displaced relative to each other in a direction in which they face each other, and when the first building and the second building are displaced relative to each other in a direction that is "perpendicular" to the direction in which they face each other.

[0010] Furthermore, when the first building and the second building are displaced relative to each other in a direction in which they face each other, the amount and speed of deformation of the vibration dampers are smaller than when the vibration dampers are arranged along that direction. Similarly, when the first building and the second building are displaced relative to each other in a direction "orthogonal" to the direction in which they face each other, the amount and speed of deformation of the vibration dampers are smaller than when the vibration dampers are arranged along that direction.

[0011] This makes it difficult for the vibration damper's allowable deformation amount and allowable deformation speed to be exceeded.

[0012] Furthermore, one end of the vibration damper is connected to the second building. This makes it easier for shear forces acting on the second building to be directly input to the vibration damper, making it easier to attenuate vibrations. Meanwhile, the other end of the vibration damper is connected to a steel frame member installed in the first building. By installing such a steel frame member, any existing vibration damper can be installed regardless of the distance between the first and second buildings, making it highly versatile.

[0013] The building connection structure of claim 2 is the building connection structure of claim 1, wherein the steel frame member comprises an arm member that protrudes from the first building and an intermediate member to which the end of the arm member is joined and to which the other end of the vibration damper is connected.

[0014] In the building connection structure of claim 2, the steel frame member includes an arm member and a relay member that protrude from the first building. By adjusting the length of the arm member, any existing vibration damper can be placed regardless of the distance between the first and second buildings, and stress can be transmitted to the first building.

[0015] The steel frame member also includes a relay member to which the arm member is joined and to which the vibration damper is connected. Therefore, even if there are multiple arm members and multiple vibration dampers, stress can be transmitted from the multiple arm members to the multiple vibration dampers via the relay member.

[0016] The building connection structure of claim 3 is the building connection structure of claim 2, wherein the relay member has a cross-shaped member that, when viewed from above, extends along the opposing direction of the first building and the second building and a direction perpendicular to the opposing direction, and the other ends of the two vibration dampers are respectively connected to two inside corners of the cross-shaped member on the second building side.

[0017] In the building connection structure of claim 3, the relay member includes a cross-shaped member that extends along the direction in which the first building and the second building face each other and a direction perpendicular to the facing direction. Two vibration dampers are connected to the two inside corners of the cross-shaped member on the second building side.

[0018] Therefore, when the first building and the second building are displaced in the direction in which they face each other, the reaction force of the vibration damper deforming in the diagonal direction can be obtained from both the portion of the cross-shaped member that is aligned with the direction in which the first building and the second building face each other and the portion that is aligned with the direction perpendicular to that direction. Also, when the first building and the second building are displaced in the direction perpendicular to the direction in which they face each other, the reaction force of the vibration damper deforming in the diagonal direction can be obtained from both the portion of the cross-shaped member that is aligned with the direction in which the first building and the second building face each other and the portion that is aligned with the direction perpendicular to that direction. In other words, it is easy to make the vibration damper, which is arranged diagonally with respect to the direction in which the first building and the second building face each other, function.

[0019] The building connection structure of claim 4 is the building connection structure of claim 3, wherein two arm members arranged diagonally relative to the direction in which the first building and the second building face each other when viewed from above are respectively joined to two inside corners of the cross-shaped member on the first building side, and one arm member aligned in the direction in which the first building and the second building face each other when viewed from above is joined to the cross-shaped member.

[0020] In the building connection structure of claim 4, two diagonally arranged arm members are respectively joined to two inside corners of the cross-shaped member on the first building side. This means that the two vibration dampers and two arm members are arranged facing each other with the cross-shaped member in between. This makes it easy for the two arm members to obtain the reaction forces of the two vibration dampers respectively joined to the two inside corners of the cross-shaped member on the second building side.

[0021] In addition, in this building connection structure, one arm member that runs along the direction in which the first and second buildings face each other is joined to the cross-shaped member. This allows the cross-shaped member to be supported not only by the diagonally positioned arm member, but also by a shorter arm member. This makes it easy to ensure vertical rigidity even if the first and second buildings are far apart.

[0022] A fifth aspect of the building connection structure is the building connection structure according to any one of the first to fourth aspects, wherein the first building is a building that is completed before the second building.

[0023] In the building connection structure of claim 5, the first building is a building completed before the second building. Therefore, when installing a vibration damper between the first and second buildings, by fixing the steel frame members to the first building, it is easy to install the vibration damper in any position regardless of the position of the column-beam frame of the first building.

[0024] Furthermore, since the second building will be completed later, if the vibration control dampers are installed at the same time as the second building is completed, the position of the column and beam frame in the second building can be aligned with the installation position of the vibration control dampers, which makes it possible to omit the steel frame members that function as reinforcing members for the second building. [Effects of the Invention]

[0025] According to the present invention, it is possible to make it difficult for the allowable deformation amount and allowable deformation speed of the vibration damper to be exceeded. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a plan view showing a building to which a building connection structure according to an embodiment of the present invention is applied. [Figure 2] 1 is a plan view showing a building connection structure according to an embodiment of the present invention. [Figure 3] (A) is a schematic diagram showing the deformation of the vibration damper when the two buildings are displaced in a direction toward each other, and (B) is a schematic diagram showing the deformation of the vibration damper when the two buildings are displaced in a direction perpendicular to the direction toward each other. [Figure 4] FIG. 10 is a plan view showing a building connecting structure relating to a modified example of the arm member in the embodiment of the present invention. [Figure 5] FIG. 10 is a plan view showing a building connection structure according to a modified example of a steel frame member in an embodiment of the present invention. [Figure 6]10 is a plan view showing a building connection structure relating to a modified example of a cross-shaped member in an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, a building connection structure according to an embodiment of the present invention 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.

[0028] Furthermore, descriptions of overlapping configurations and symbols 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, replacing them with different configurations, or combining one embodiment with various modified examples, within the scope of the purpose of the present disclosure.

[0029] In each drawing, the directions indicated by arrows X and Y are directions along the horizontal plane and are perpendicular to each other. The direction indicated by arrow Z is a direction along the vertical direction (up and down). In each drawing, the directions indicated by arrows X, Y, and Z are assumed to be consistent with each other.

[0030] <Building connection structure> As shown in Fig. 1, the building connection structure according to an embodiment of the present invention is a vibration control structure in which two buildings 10 and 20 are connected by a vibration control damper 30. This building connection structure is composed of a building 10 as a first building, a steel frame member 40, a building 20 as a second building, and vibration control dampers 30 and 32.

[0031] (building) Buildings 10 and 20 were completed at different times, with building 10 being completed first and building 20 being completed later. Buildings 10 and 20 are seismically isolated buildings supported by seismic isolation devices.

[0032] Furthermore, the buildings 10 and 20 are each formed of a column and beam frame, and each frame is arranged along the X direction and the Y direction. The buildings 10 and 20 are arranged facing each other with a gap between them, and the facing direction is along the Y direction.

[0033] More specifically, the frames of the buildings 10 and 20 are formed along the same direction, and the facing exterior wall surfaces are arranged parallel to the X direction. Furthermore, the building 20 is arranged facing a steel frame member 40, which will be described below.

[0034] (Steel frame members) The building 10 is provided with steel frame members 40. "Provided" means "connected." The steel frame members 40 include a connecting member 42, arm members 44, 46, 48, and a relay member 50.

[0035] (Steel frame components - connecting components) 2, the connecting member 42 is a member formed of an H-shaped steel, with a web 42W arranged along a horizontal plane and one flange 42F joined by a PC steel rod to a beam 12A along the X direction in a reinforced concrete building 10. The connecting member 42 is arranged between columns 12B across which the beam 12A spans in the building 10. The flange 42F and the beam 12A may also be joined by bolts.

[0036] (Steel frame member - arm member) The arm members 44, 46, and 48 are members formed from H-shaped steel, and each is a cantilever beam with one end joined to the joining member 42 and projecting from the building 10. The other end of each of the arm members 44, 46, and 48 is joined to the relay member 50.

[0037] The arm member 44 is a member that extends along the Y direction, which is the direction in which buildings 10 and 20 face each other when viewed from above, and the end 44E is joined to the end of the cross-shaped member 52 in the relay member 50 (the cross-shaped member 52 will be described later).

[0038] Arm member 46 is a member arranged diagonally with respect to the Y direction, which is the direction in which buildings 10 and 20 face each other when viewed from above, and the X direction, which is perpendicular to the Y direction. Arm member 46 is arranged to protrude from the portion of connecting member 42 joined to pillar 12B of building 10, and end portion 46E is joined to inside corner member 54A of relay member 50 on the building 10 side (inside corner member 54A will be described later).

[0039] Similarly, arm member 48 is a member that is arranged diagonally with respect to the Y direction and the X direction orthogonal to the Y direction when viewed from above, on the opposite side of arm member 44 from arm member 46. Arm member 48 is arranged to protrude from the portion of connecting member 42 that is joined to pillar 12B of building 10, and end portion 48E is joined to inside corner member 54B of relay member 50 on the building 10 side (inside corner member 54B will be described later).

[0040] As shown by the dashed lines in FIG. 2, the center lines of the arm members 44, 46, and 48, when viewed from above, intersect at an intersection O where they overlap with a cross-shaped member 52, which will be described later.

[0041] In addition, in the joint member 42, at the portion where the arm members 44, 46, and 48 are joined, a reinforcing rib 42R is joined between the flanges 42F.

[0042] (Steel frame member - relay member) The relay member 50 is formed with a cross-shaped member 52 and inside corner members 54A, 54B, 54C and 54D.

[0043] The cross-shaped member 52 is formed by a Y-direction member 52A extending along the Y direction and an X-direction member 52B extending along the X direction. The Y-direction member 52A and the X-direction member 52B are formed using H-shaped steel, and the Y-direction member 52A serves as a through member at the intersection between the Y-direction member 52A and the X-direction member 52B. In other words, the cross-shaped member 52 is formed by joining the X-direction member 52B to the Y-direction member 52A. Note that the cross-shaped member 52 may also be formed with the X-direction member 52B serving as a through member.

[0044] The inside corner members 54A, 54B, 54C, and 54D are members respectively joined to the inside corners of the joint between the Y-direction member 52A and the X-direction member 52B in the cross-shaped member 52. Of these, the inside corner members 54A and 54B are respectively joined to the two inside corners on the building 10 side, and the inside corner members 54C and 54D are respectively joined to the two inside corners on the building 20 side.

[0045] In this invention, the state in which "two arm members" are "respectively joined to two inside corners on the first building side of the cross-shaped member" refers to the state in which arm members 46 and 48 are joined to cross-shaped member 52 via inside corner members 54A and 54B, respectively.

[0046] Similarly, in the present invention, the state in which "two vibration dampers" are "connected to two inside corners on the second building side of the cross-shaped member" refers to the state in which vibration dampers 30 and 32, which will be described later, are joined to cross-shaped member 52 via inside corner members 54C and 54D, respectively.

[0047] (Vibration damper) The vibration dampers 30 and 32 are, for example, ball-joint oil dampers, and are disposed obliquely with respect to both the direction in which the buildings 10 and 20 face each other (Y direction) when viewed from above, and the X direction perpendicular to the Y direction. The vibration dampers 30 and 32 are disposed in a horizontal position.

[0048] Vibration dampers 30 and 32 are each rotatably connected at one end to building 20 and at the other end to steel frame member 40 by a ball joint.

[0049] One end 30A of the vibration damper 30 is connected to a connecting member 22A of the building 20, and the other end 30B is connected to an inside corner member 54C of the steel frame member 40. Similarly, one end 32A of the vibration damper 32 is joined to a connecting member 22B of the building 20, and the other end 32B is connected to an inside corner member 54D of the steel frame member 40.

[0050] The connecting members 22A and 22B are connected to a steel beam 22C extending along the X direction that forms the building 20. Furthermore, a steel beam 22D extending along the Y direction is connected to the portion of the steel beam 22C where the connecting members 22A and 22B are connected.

[0051] As shown by the dashed line in FIG. 2, the center lines of the vibration dampers 30 and 32 intersect at an intersection O where they overlap with a cross-shaped member 52, which will be described later, when viewed from above.

[0052] <Action and effect> In the building connection structure according to the embodiment of the present invention, the vibration dampers 30 and 32 are disposed obliquely relative to the direction in which the buildings 10 and 20 face each other (Y direction) when viewed from above.

[0053] Therefore, vibration dampers 30 and 32 can exhibit vibration control performance both when an earthquake force is input to buildings 10 and 20, causing relative displacement along the opposing direction (Y direction), and when an earthquake force is input to buildings 10 and 20, causing relative displacement along the direction "perpendicular" to the opposing direction (X direction).

[0054] Furthermore, when the buildings 10 and 20 are displaced relative to each other in opposing directions, the deformation and deformation speed of the vibration dampers are smaller than when the vibration dampers are arranged along the opposing directions.

[0055] Here, Figure 3(A) schematically illustrates a vibration damper 300 according to a comparative example and a vibration damper 30 according to an embodiment of the present invention, both arranged along the direction in which buildings 10 and 20 face each other (Y direction).

[0056] As shown in this figure, when the buildings 10 and 20 are relatively displaced by a distance δY in the Y direction, the vibration damper 300 is also deformed by a distance δY in the Y direction. Meanwhile, the vibration damper 30 rotates around the end 30B, while the end 30A is displaced by a distance δY in the Y direction. At this time, the deformation amount δL of the vibration damper 30 is smaller than the distance δY.

[0057] That is, when the buildings 10 and 20 are relatively displaced by a distance δY in the direction in which they face each other, the deformation amount δL of the vibration damper 30 is smaller than the deformation amount (distance δY) of the vibration damper 300 arranged along the same direction. Furthermore, if the deformation amount is small, the deformation speed is also small.

[0058] Similarly, when buildings 10 and 20 are displaced relative to each other along a direction (X direction) perpendicular to the direction in which they face each other, the amount and speed of deformation of the vibration damper are smaller than when the vibration damper is arranged along that direction.

[0059] Here, FIG. 3(B) schematically illustrates a vibration damper 320 according to a comparative example and the vibration damper 30 according to an embodiment of the present invention, both arranged along the X direction.

[0060] As shown in this figure, when buildings 10 and 20 are relatively displaced by a distance δX in the X direction, vibration damper 320 is also deformed by a distance δX in the X direction. Meanwhile, vibration damper 30 rotates around end 30B, while end 30A is displaced by a distance δX in the X direction. At this time, the deformation amount δL of vibration damper 30 is smaller than the distance δX.

[0061] That is, when the buildings 10 and 20 are displaced relative to each other by a distance δX in a direction perpendicular to the direction in which they face each other, the deformation amount δL of the vibration damper 30 is smaller than the displacement (distance δX) of the vibration damper 320 arranged along that direction. Furthermore, if the deformation amount is small, the deformation speed is also small.

[0062] As described above, the building connection structure according to the embodiment of the present invention makes it difficult for the allowable deformation amount and allowable deformation speed of the vibration control damper to be exceeded.

[0063] Furthermore, in the building connection structure according to the embodiment of the present invention, as shown in Fig. 2, one end (ends 30A and 32A) of the vibration dampers 30 and 32 is rotatably connected to the building 20. This makes it easier for the shear force acting on the building 20 to be input directly to the vibration dampers 30 and 32, making it easier to attenuate vibrations.

[0064] Meanwhile, the other ends (ends 30B and 32B) of the vibration dampers 30 and 32 are rotatably connected to a steel frame member 40 provided on the building 10. By providing such a steel frame member 40, any existing vibration damper can be arranged regardless of the distance between the buildings 10 and 20, making the system highly versatile.

[0065] The steel frame member 40 includes arm members 44, 46, and 48 that protrude from the building 10, and an intermediate member 50. By adjusting the lengths of the arm members 44, 46, and 48, any existing vibration damper can be placed regardless of the distance between the buildings 10 and 20, and stress can be transmitted to the building 10.

[0066] The steel frame member 40 also includes an intermediate member 50 to which the arm members 44, 46, and 48 are joined and to which the vibration dampers 30 and 32 are connected. Therefore, even if there are multiple arm members and multiple vibration dampers as described in the above embodiment, stress can be transmitted from the multiple arm members to the multiple vibration dampers via this intermediate member 50.

[0067] Furthermore, relay member 50 includes a cross-shaped member 52 that extends along the direction in which buildings 10 and 20 face each other and a direction perpendicular to the facing direction. The other ends (ends 30B and 32B) of two vibration dampers 30 and 32 are rotatably connected to two inside corners of cross-shaped member 52 on the building 20 side via inside corner members 54C and 54D, respectively.

[0068] Therefore, when the buildings 10 and 20 are displaced along the Y direction, the reaction forces of the vibration dampers 30 and 32, which deform in the diagonal direction, can be obtained from both the X-direction members 52B that extend along the X direction and the Y-direction members 52A that extend along the Y direction in the cross-shaped members 52. Also, when the buildings 10 and 20 are displaced along the X direction, the reaction forces of the vibration dampers 30 and 32, which deform in the diagonal direction, can be obtained from both the X-direction members 52B that extend along the X direction and the Y-direction members 52A that extend along the Y direction in the cross-shaped members 52.

[0069] That is, by providing the cross-shaped member 52, it becomes easier to make the vibration damper 30, which is disposed at an angle to the direction in which the buildings 10 and 20 face each other, function.

[0070] In addition, in the building connection structure according to an embodiment of the present invention, two diagonally arranged arm members 46 and 48 are joined to two inside corners of the cross-shaped member 52 on the building 10 side via inside corner members 54C and 54D, respectively.

[0071] As a result, the two vibration dampers 30 and 32 and the two arm members 46 and 48 are arranged opposite each other with the cross-shaped member 52 in between. Therefore, the two arm members 46 and 48 can easily obtain the reaction force of the two vibration dampers 30 and 32 that are respectively joined to the two inside corners of the cross-shaped member 52 on the building 20 side.

[0072] Furthermore, in this building connection structure, one arm member 44 extending along the Y direction is joined to the cross-shaped member 52. This allows the cross-shaped member 52 to be supported not only by the diagonally arranged arm members 46 and 48, but also by the arm member 44, which is shorter than these. This makes it easy to ensure vertical rigidity even if the distance between buildings 10 and 20 is wide.

[0073] Furthermore, in this building connecting structure, building 10 is the building that was completed before building 20. Therefore, when installing vibration dampers 30 and 32 between buildings 10 and 20, by fixing steel frame members 40 to building 10, it is easy to install vibration dampers 30 and 32 in any position regardless of the position of columns 12B of the column-beam frame that forms building 10.

[0074] Furthermore, since the building 20 is a building that will be completed later, if the vibration dampers 30 and 32 are installed at the time of completion of the building 20, the positions of the column and beam frames in the building 20, such as the steel beam 22D, can be aligned with the installation positions of the vibration dampers 30 and 32. This makes it possible to omit steel frame members that function as reinforcing members for the building 20.

[0075] <Other embodiments> In the above embodiment, building 10 is a building that was completed before building 20, but the embodiment of the present invention is not limited to this. In the present invention, building 20 may be a building that was completed before building 10, or building 10 and building 20 may be buildings that were completed at the same time.

[0076] Regardless of the completion date of buildings 10 and 20, by arranging vibration control dampers 30 and 32 diagonally relative to the direction in which buildings 10 and 20 face each other, it becomes difficult to exceed the allowable deformation amount and allowable deformation speed of vibration control dampers 30 and 32.

[0077] Furthermore, in the above embodiment, three arm members 44, 46, and 48 are provided as arm members, but the present invention is not limited to this. For example, any of the arm members 44, 46, and 48 may be omitted. For example, FIG. 4 shows a diagram in which the arm member 44 is omitted. Even if the arm member 44 is omitted, the arm members 46 and 48, which are arranged diagonally when viewed from above, can still provide the effect of making it easier to obtain the reaction force of the vibration dampers 30 and 32.

[0078] Furthermore, in the above embodiment, the steel frame member 40 includes the connecting member 42, the arm members 44, 46, 48, and the relay member 50, but the present invention is not limited to this. For example, as shown in Fig. 5, the arm members may be omitted, and a relay member 60, which is a modified version of the relay member 50, may be used.

[0079] The relay member 60 includes a Y-direction member 62 and inside corner members 64A and 64B. Of these, the Y-direction member 62 is an H-shaped steel beam extending along the Y direction and joined to the joining member 42. The inside corner members 64A and 64B are members joined to the inside corner formed at the joint between the Y-direction member 62 and the joining member 42. Similar to the inside corner members 54C and 54D shown in FIG. 2, the vibration dampers 30 and 32 are connected to these inside corner members 64A and 64B.

[0080] Furthermore, in the above embodiment, the cross-shaped member 52 is formed by a Y-direction member 52A extending along the Y direction and an X-direction member 52B extending along the X direction, but the embodiment of the present invention is not limited to this. For example, the cross-shaped member 52 may be formed by diagonal members 70A and 70B arranged obliquely with respect to the Y direction, as in the cross-shaped member 70 shown in FIG.

[0081] The angle between the diagonal members 70A and 70B is not particularly limited, but in this example, the diagonal members 70A and 70B are arranged perpendicular to each other and form an angle of 45° with respect to the Y direction.

[0082] Furthermore, when the cross-shaped member is formed by diagonal members 70A and 70B arranged diagonally with respect to the Y direction, it is preferable that the vibration dampers 30 and 32 are arranged so that their central axes coincide with the central axes of the diagonal members 70A and 70B.

[0083] When the cross-shaped member is formed in this manner, it is possible to omit the inside corner members 54A to 54D as shown in Figure 2. The length of the diagonal members 70A and 70B is optional, and the arm members 46 and 48 may be formed relatively long.

[0084] Furthermore, in the above embodiment, ball joint type dampers are used as a configuration for rotatably connecting the vibration dampers 30 and 32 to the building 20 and the steel frame member 40, but embodiments of the present invention are not limited to this.

[0085] For example, the vibration dampers 30 and 32 do not have to be ball joint type; they can be pin-jointed using a connecting pin or the like whose rotation axis runs vertically so that they can rotate horizontally relative to the building 20 and the steel frame member 40.

[0086] In addition, in the above embodiment, two dampers, vibration dampers 30 and 32, are provided as dampers arranged diagonally with respect to the direction in which buildings 10 and 20 face each other, but the embodiment of the present invention is not limited to this. Either vibration damper 30 or 32 may be omitted.

[0087] 1, dampers 300, 320 are also provided between the buildings 10 and 20 along the direction in which the buildings 10 and 20 face each other (Y direction) and a direction perpendicular to that direction (X direction). In the present invention, if there are dampers disposed between the two buildings at an angle to the direction in which the buildings 10 and 20 face each other, such dampers 300, 320 may be provided. [Explanation of symbols]

[0088] 10 Building (First Building) 20 Building (Second Building) 30 Vibration damper 32 Vibration damper 40 Steel members 44 Arm member 46 Arm member 48 Arm member 50 Relay member 52 Cross-shaped member 60 Relay member 70 Cross-shaped member

Claims

1. The first building and a steel frame member provided in the first building; a second building arranged facing the steel frame member; a vibration damper disposed obliquely with respect to the direction in which the first building and the second building face each other when viewed from above, the vibration damper having one end connected to the second building and the other end connected to the steel frame member; A building connection structure equipped with

2. The steel frame member is an arm member extending from the first building; an intermediate member to which the end of the arm member is joined and to which the other end of the vibration damper is connected; The building connection structure according to claim 1 , comprising:

3. the relay member includes a cross-shaped member that is aligned along a direction in which the first building and the second building face each other and a direction perpendicular to the facing direction when viewed from above, The building connection structure according to claim 2, wherein the other ends of the two vibration dampers are respectively connected to two inside corners of the cross-shaped member on the second building side.

4. The two arm members arranged diagonally with respect to the direction in which the first building and the second building face each other when viewed from above are respectively joined to two inside corners of the cross-shaped member on the first building side, The building connection structure according to claim 3, wherein one of the arm members extending in the direction in which the first building and the second building face each other when viewed from above is joined to the cross-shaped member.

5. The first building is a building completed before the second building. The building connection structure according to any one of claims 1 to 4.

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