Vibration-damping structure

Abstract

To acquire a technology capable of attenuating vibration generating in a beam on which an upper end of a hanging wall is mounted.SOLUTION: A vibration control structure includes: a beam; a column on which the beam is mounted; a hanging wall which hangs downward from the beam, in which an upper end is mounted on a lower surface of the beam and a side end is mounted on a side surface of the column; and a pair of attenuation materials which extends in the direction inclining with respect to the vertical direction, the pair of which is provided so as to sandwich the hanging wall, in which a base end is mounted on the column via a connection member and a tip is mounted on the beam via another connection member.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a vibration control structure for a structure. [Background technology]

[0002] The passive vibration control mechanism described in Patent Document 1 is configured by providing cross braces with open intersections within the column and beam frame of an architectural structure, and attaching oil dampers that expand and contract in the axial direction of the braces. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-195567 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, the base end of a damping material such as a damper that extends in a direction inclined relative to the vertical direction is attached to the side of a column, and the tip of the damping material is attached to the underside of a beam.

[0005] Here, the vertical upper end of the hanging wall may be attached to the underside of the beam to which the tip of the damping material is attached, and the horizontal end of the hanging wall may be attached to the side of the column. In this way, it is difficult to place a damping material between the beam to which the hanging wall is attached and the column. In other words, it is difficult to damp vibrations occurring in the beam to which the upper end of the hanging wall is attached.

[0006] The object of the present disclosure is to attenuate vibrations that occur in a beam to which the upper end of a hanging wall is attached. [Means for solving the problem]

[0007] The vibration control structure according to the first aspect is characterized by comprising a beam, a pillar to which the beam is attached, a hanging wall hanging downward from the beam, with an upper end attached to the underside of the beam and a side end attached to a side of the pillar, and a pair of damping materials extending in a direction inclined relative to the vertical direction and arranged on either side of the hanging wall, with a base end attached to the pillar via a connecting member and a tip end attached to the beam via another connecting member.

[0008] According to the configuration of the first aspect, a pair of damping materials are provided on either side of a hanging wall attached to a beam. The base ends of the damping materials are attached to the column via a connecting member, and the tip ends of the damping materials are attached to the beam via another connecting member. This allows the pair of damping materials to damp vibrations occurring in the beam to which the upper ends of the hanging walls are attached.

[0009] The vibration-damping structure according to the second aspect is the vibration-damping structure according to the first aspect, characterized in that the lower end of the hanging wall is provided with an attachment member to which the upper end of a movable partition wall is attached.

[0010] According to the configuration of the second aspect, vibration of the beam caused by the movable partition wall can also be damped by the pair of damping materials.

[0011] A vibration-damping structure according to a third aspect is the vibration-damping structure according to the first or second aspect, characterized in that the pillars are steel pipe pillars filled with concrete.

[0012] According to the configuration of the third aspect, the support rigidity for supporting the damping material can be improved compared to when the column is made of H-shaped steel. [Effects of the Invention]

[0013] According to the present disclosure, it is possible to attenuate vibrations occurring in the beam to which the upper end of the hanging wall is attached. [Brief explanation of the drawings]

[0014] [Figure 1]1 is an overall perspective view showing a structure equipped with a vibration damping structure according to an embodiment of the present disclosure. [Figure 2] 1 is a front view showing a typical frame of a structure equipped with a vibration control structure according to an embodiment of the present disclosure. [Figure 3] 1 is a front view showing a frame having a vibration damping structure according to an embodiment of the present disclosure. [Figure 4] 1 is an enlarged front view showing a frame having a vibration damping structure according to an embodiment of the present disclosure. [Figure 5] 1 is a side view showing a vibration damping structure according to an embodiment of the present disclosure. [Figure 6] 1 is a perspective view showing the attachment of a base end of a damping material provided in a vibration damping structure according to an embodiment of the present disclosure. FIG. [Figure 7] 1 is a perspective view showing the attachment of the tip of a damping material provided in a vibration control structure according to an embodiment of the present disclosure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] A vibration damping structure according to an embodiment of the present disclosure will be described with reference to Figures 1 to 7. Note that arrow H shown in the figures indicates the vertical direction, i.e., the height direction, arrow W indicates the horizontal direction, i.e., the width direction, and arrow D indicates the horizontal direction, i.e., the depth direction. Note that arrows W and D are perpendicular to each other.

[0016] (Structures 100) As shown in Fig. 1, a steel-framed structure 100 equipped with a vibration-damping structure 10 extends in the depth direction. Furthermore, when the structure 100 is cut along a plane perpendicular to the depth direction, it extends in the width direction, and the roof portion is arc-shaped. The structure 100 is configured to include a plurality of column-beam frames 90 arranged at intervals in the depth direction. The shape of the roof portion may be a roof shape with a constant slope, for example.

[0017] (Column beam frame 90) As shown in Figure 2, the column-beam structure 90 is composed of a pair of truss columns 20 arranged at a distance in the width direction, and a truss beam 30 spanning the upper end portions of the pair of truss columns 20.

[0018] In this embodiment, for example, the distance (L in the drawing) between the pair of truss columns 20 is set to 90 m or more, and the truss beam 30 is set to a large span beam.

[0019] Furthermore, oil dampers 12 (hereinafter referred to as "dampers 12") are provided at the corners formed by the truss columns 20 and the truss beams 30 as damping materials that attenuate the amplitude of vibrations occurring in the truss beams 30. Furthermore, hanging walls 40 are provided at predetermined intervals among the multiple column-beam frames 90 arranged in the depth direction, as shown in Fig. 3.

[0020] The vibration control structure 10 according to the embodiment is configured to include the truss column 20, the truss beam 30, the hanging wall 40, the damper 12, and the connecting members 50, 70 (see FIG. 4) used to attach the damper 12 to the frame.

[0021] -20 truss columns, 30 truss beams- As shown in Figures 2 and 3, the truss column 20 is composed of an indoor chord 22, an outdoor chord 24, and horizontal members 26a and diagonal members 26b provided between the indoor chord 22 and the outdoor chord 24. The indoor chord 22 is a concrete-filled steel pipe with a rectangular cross section and filled with concrete. The truss beam 30 is composed of a lower chord 32, an upper chord 34, and beam members 36a and diagonal members 36b provided between the upper chord 34 and the lower chord 32. The lower chord 32 is an example of a beam, and the indoor chord 22 is an example of a column.

[0022] - Hanging wall 40 - 3, the hanging wall 40 extends in the width direction. The upper end of the hanging wall 40 is attached to the lower surface of the lower chord 32 using fasteners (not shown), and the side ends of the hanging wall 40 are attached to the side surfaces of the indoor chord 22 using fasteners (not shown).

[0023] Specifically, the hanging wall 40 is configured to include a plurality of vertical members 42 that are arranged at intervals in the width direction and extend vertically, horizontal members 44 that extend in the width direction, and rectangular glass plates 46. The upper ends of the vertical members 42 are attached to the undersides of the lower chord members 32, and the horizontal members 44 are attached to the lower ends of the vertical members 42. In addition, both ends of the horizontal members 44 are attached to the side surfaces of the indoor chord members 22. The glass plates 46 are attached to the area surrounded by the lower chord members 32, the vertical members 42, and the horizontal members 44, and the area surrounded by the lower chord members 32, the vertical members 42, the horizontal members 44, and the indoor chord members 22.

[0024] In addition, mounting members 48 (see FIG. 5) to which the upper end of the movable partition wall is attached are provided on the underside of the horizontal member 44. With the upper end of the movable partition wall attached to the horizontal member 44 via the mounting members 48, the load of the movable partition wall is applied to the lower chord 32 via the hanging wall 40.

[0025] -Damper 12- In a beam-column frame 90 that does not have a hanging wall 40, as shown in Fig. 2, the tip of the damper 12 is attached to the underside of the lower chord 32, and the base end of the damper 12 is attached to the side of the indoor chord 22. The damper 12 is arranged so as to extend in a direction that is inclined relative to the vertical direction.

[0026] In contrast to this, in a column-beam frame 90 provided with a hanging wall 40, as shown in Fig. 4 and Fig. 5, a pair of dampers 12 are provided on either side of the hanging wall 40. In the following description, the damper 12 on the front side in the depth direction relative to the hanging wall 40 may be referred to as damper 12a, and the damper 12 on the back side in the depth direction relative to the hanging wall 40 may be referred to as damper 12b. When there is no need to distinguish between the dampers 12a and 12b, the alphabet at the end of the reference numeral may be omitted.

[0027] The base ends of dampers 12a, 12b are attached to the indoor chord 22 via connecting members 50. The tips of dampers 12a, 12b are attached to the lower chord 32 via connecting members 70. Connecting member 70 is an example of another connecting member.

[0028] -Connecting member 50- As shown in FIGS. 4 and 6, the connecting member 50 is configured to include a plate member 52, a bracket member 58, and gusset members 64, 66, and 68.

[0029] The thickness direction of the plate material 52 is the extension direction of the damper 12, and the outer shape of the plate material 52 is a rectangle extending in the depth direction. The base end of the damper 12a is attached to the front part of the plate material 52 in the depth direction, and the base end of the damper 12b is attached to the back part of the plate material 52 in the depth direction.

[0030] Meanwhile, diaphragms 56a, 56b, which are spaced apart in the vertical direction, are joined by welding or the like to the indoor chord 22. Diaphragm 56b is joined by welding or the like to the upper surfaces of beam members 28 that extend from the indoor chord 22 to the front and back sides in the depth direction, and to the upper surface of cross member 26a of truss column 20. Diaphragm 56a is also positioned above diaphragm 56b.

[0031] The bracket material 58 is a plate material that is curved when viewed from the depth direction. One side of the bracket material 58 is joined to the diaphragm 56a by welding or the like, and the other side of the bracket material 58 is joined to a central portion in the up-down direction on the back surface of the plate material 52 by welding or the like.

[0032] The gusset material 64 is a plate material, and the thickness direction of the gusset material 64 is the depth direction. A pair of gusset materials 64 are provided spaced apart in the depth direction. The gusset materials 64 are disposed below the bracket material 58 and the diaphragm 56a. One side of each gusset material 64 is joined by welding or the like to a portion of the rear surface of the plate material 52 on the end side in the depth direction, and the other side of each gusset material 64 is joined by welding or the like to the diaphragm 56b.

[0033] The gusset material 66 is a plate material, and the thickness direction of the gusset material 66 is the depth direction. Furthermore, the gusset material 66 is disposed between the pair of gusset materials 64 in the depth direction. The gusset material 66 is disposed below the bracket material 58 and the diaphragm 56a. Furthermore, one side of the gusset material 66 is joined by welding or the like to a central portion in the depth direction on the back surface of the plate material 52, and the other side of the gusset material 66 is joined by welding or the like to a side surface of the indoor chord member 22.

[0034] The gusset material 68 is a plate material, and the thickness direction of the gusset material 66 is the depth direction. The gusset material 68 is arranged on the opposite side of the gusset material 66 across the bracket material 58. One side of the gusset material 68 is joined by welding or the like to a central portion in the depth direction on the back surface of the plate material 52, and the other side of the gusset material 68 is joined by welding or the like to a side surface of the indoor chord member 22. A notch is formed in the glass sheet 46 where the connecting member 50 is arranged.

[0035] In this configuration, the load input to the dampers 12a, 12b is transmitted to the indoor chord 22, the cross member 26a, and the beam member 28 via the connecting member 50.

[0036] -Connecting member 70- As shown in FIGS. 4 and 7, the connecting member 70 includes a plate member 72 and gusset members 74 and 76.

[0037] The thickness direction of the plate material 72 is the extension direction of the damper 12, and the outer shape of the plate material 72 is a rectangle extending in the depth direction. The tip of the damper 12a is attached to the front part of the plate material 72 in the depth direction, and the tip of the damper 12b is attached to the back part of the plate material 72 in the depth direction.

[0038] On the other hand, beam members 38 are attached to the lower chord member 32, extending from the lower chord member 32 to the front and rear sides in the depth direction.

[0039] The gusset material 74 is a plate material, and the thickness direction of the gusset material 74 is the depth direction. A pair of gusset materials 74 are provided spaced apart in the depth direction. One side of each gusset material 74 is joined by welding or the like to a portion of the back surface of the plate material 72 on the end side in the depth direction, and the other side of each gusset material 74 is joined by welding or the like to the underside of the beam member 38.

[0040] The gusset material 76 is a plate material, and the thickness direction of the gusset material 76 is the depth direction. The gusset material 76 is disposed between a pair of gusset materials 74 in the depth direction. One side of the gusset material 76 is joined by welding or the like to a central portion in the depth direction on the back surface of the plate material 72, and the other side of the gusset material 76 is joined by welding or the like to the lower surface of the lower chord member 32 and the side surface of the vertical member 42 of the hanging wall 40. A notch is formed in the glass plate 46 where the connecting member 70 is disposed.

[0041] In this configuration, vibrations generated in the lower chord 32 are transmitted to the dampers 12a and 12b via the connecting member 70.

[0042] (summary) As explained above, in the vibration control structure 10, it is not possible to attach a damper 12 to a lower chord 32 to which a hanging wall 40 is attached, as is the case with a lower chord 32 to which a hanging wall 40 is not attached. Therefore, a pair of dampers 12a, 12b are provided on either side of the hanging wall 40, and the base ends of the dampers 12a, 12b are attached to the indoor chord 22 via connecting members 50, and the tips of the dampers 12a, 12b are attached to the lower chord 32 via connecting members 70. This makes it possible to damp vibrations occurring in the lower chord 32 (truss beam 30) to which the upper end of the hanging wall 40 is attached.

[0043] Furthermore, in the vibration control structure 10, a mounting member 48 to which the upper end of the movable partition wall is attached is provided on the underside of the cross member 44 of the hanging wall 40. In other words, the load of the movable partition wall is applied to the lower chord 32 via the hanging wall 40. However, the pair of dampers 12 can also attenuate the vibration of the beam caused by the movable partition wall.

[0044] In addition, in the vibration control structure 10, the indoor chord 22 to which the base ends of the pair of dampers 12a, 12b are attached via the connecting member 50 is a steel pipe column filled with concrete. This makes it possible to improve the support rigidity that supports the dampers 12a, 12b compared to when the indoor chord is an H-shaped steel beam.

[0045] Furthermore, in the vibration control structure 10, the base end of the damper 12a is attached to a portion on the front side in the depth direction of the plate material 52, and the base end of the damper 12b is attached to a portion on the rear side in the depth direction of the plate material 52. In this way, by attaching the base ends of the pair of dampers 12a and 12b to one plate material 52, it is possible to prevent the support rigidity that supports the dampers 12a and 12b from differing between the dampers 12a and 12b.

[0046] Furthermore, in the vibration control structure 10, the tip of the damper 12a is attached to a portion on the front side in the depth direction of the plate material 72, and the tip of the damper 12b is attached to a portion on the rear side in the depth direction of the plate material 72. In this way, by attaching the tips of the pair of dampers 12a and 12b to one plate material 72, it is possible to prevent the damping amounts by which the dampers 12a and 12b damp vibrations from differing between the dampers 12a and 12b.

[0047] While the present disclosure has been described in detail with respect to specific embodiments, it will be apparent to those skilled in the art that the present disclosure is not limited to such embodiments and that various other embodiments are possible within the scope of the present disclosure. For example, in the above embodiment, an oil damper is used as the damping material, but any member that generates a damping effect by deformation, such as a spring or an actuator, may be used.

[0048] Furthermore, in the above embodiment, the vibration-damping structure 10 was used in a steel-framed structure 100, but the vibration-damping structure 10 is not limited to steel-framed structures (S-framed structures), and may also be used in reinforced concrete structures (RC-framed structures), reinforced steel-framed concrete structures (SRC-framed structures), wooden structures (W-framed structures), etc.

[0049] Furthermore, although not specifically explained in the above embodiment, gusset materials or bracket materials other than those described may be used for the connecting members 50, 70, and furthermore, the support members that support the gusset materials may be welded to the indoor chord member 22 or the lower chord member 32. [Explanation of symbols]

[0050] 10 Vibration control structure 12 Damper 12a Damper 12b Damper 22 Indoor chord (example of a column) 32 Lower chord (example of beam) 40 Hanging wall 48 Mounting material 50 Connecting member 70 Connecting member (an example of another connecting member) 90 Column beam frame 100 structures

Claims

1. Beams and a column to which the beam is attached; a hanging wall that hangs downward from the beam, has an upper end attached to the lower surface of the beam, and has a side end attached to a side surface of the column; a pair of damping materials extending in a direction inclined relative to the vertical direction, provided so as to sandwich the hanging wall, the base ends of which are attached to the column via a connecting member and the tip ends of which are attached to the beam via another connecting member; A vibration-damping structure equipped with:

2. A mounting member is provided at the lower end of the hanging wall to which the upper end of the movable partition wall is attached. The vibration damping structure according to claim 1 .

3. The column is a concrete-filled steel pipe column. The vibration damping structure according to claim 1 or 2.

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