Horizontal member and architectural structure

Abstract

To provide a horizontal member capable of effectively suppressing floor vibrations, and an architectural structure.SOLUTION: A horizontal member 20 includes: a first horizontal member 30 that supports floor materials; a second horizontal member 40 placed under the first horizontal member 30 along the first horizontal member 30; a damping member 50 that is placed between the first horizontal member 30 and the second horizontal member 40; and a connecting material 60 that is placed between the first horizontal member 30 and the second horizontal member 40. The damping member 50 includes a first damping member 53 and a second damping member 54. The connecting material 60 is placed between the first damping member 53 and the second damping member 54 in the longitudinal direction of the horizontal member 20.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a horizontal member and a building.

Background Art

[0002] In a building, the following techniques exist as techniques for suppressing floor vibration. Patent Document 1 discloses a vibration damping structure in which a damping member (damping material in Patent Document 1) is disposed between a first beam (beam in Patent Document 1) and a second beam (additional beam in Patent Document 1) arranged in parallel with the first beam.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a configuration for suppressing floor vibration by disposing a damping member between the first beam and the second beam, there is room for structural improvement.

Means for Solving the Problems

[0005] (1) The horizontal member for solving the above problems is a horizontal member for suppressing floor vibration in a building, and includes a first horizontal member that supports a floor material, a second horizontal member that is disposed below the first horizontal member along the first horizontal member, a damping member that is disposed between the first horizontal member and the second horizontal member, and a connecting member that is disposed between the first horizontal member and the second horizontal member. The damping member includes a first damping member and a second damping member, and the connecting member is disposed between the first damping member and the second damping member in the longitudinal direction of the horizontal member.

[0006] According to this configuration, since the connecting member connects the first horizontal member and the second horizontal member, the deflection of the first horizontal member can be suppressed. In addition, since the first horizontal member and the second horizontal member are connected by a connecting member, the second horizontal member bends in response to the bending of the first horizontal member due to a load. The lower surface of the first horizontal member expands on both sides centered on the longitudinal middle, while the upper surface of the second horizontal member contracts toward the longitudinal middle. At this time, forces are applied to the first damping member and the second damping member in the shear direction. Due to the deformation of the first damping member and the second damping member in the shear direction, a force that prevents the expansion of the lower surface of the first horizontal member acts on the first damping member, and a force that prevents the contraction of the upper surface of the second horizontal member acts on the second damping member. Due to this restraining action, the bending of the first horizontal member is suppressed, so that the vibration of the first horizontal member can be suppressed.

[0007] (2) In the horizontal member according to (1) above, the damping member is more likely to deform in the longitudinal direction than in the vertical direction.

[0008] According to this configuration, when the second horizontal member bends in response to the bending of the first horizontal member, the damping member can be preferably deformed in the shear direction.

[0009] (3) In the horizontal member according to (1) or (2) above, the first damping member is arranged in the longitudinal direction within a range of not more than 1 / 4 of the span of the horizontal member from the first end of the horizontal member, and the second damping member is arranged in the longitudinal direction within a range of not more than 1 / 4 of the span from the second end of the horizontal member opposite to the first end in the horizontal member.

[0010] According to this configuration, the damping members are arranged so as to be closer to both ends of the horizontal member. Since the deformation difference between the lower surface of the first horizontal member and the upper surface of the second horizontal member is likely to be larger at the longitudinal end than at the longitudinal middle of the horizontal member, the restraining action described in (1) above can be effectively exerted.

[0011] (4) In the horizontal member according to any one of (1) to (3) above, the rigidity of the connecting member in the vertical direction is greater than the rigidity of the damping member in the vertical direction.

[0012] According to this configuration, compared with the case where the rigidity of the connecting member is the same as or smaller than the rigidity of the damping member, the second cross-member can be deformed in accordance with the deformation of the first cross-member, so that the suppressing effect described in the above (1) can be effectively exerted.

[0013] (5) In the cross-member according to any one of the above (1) to (4), the rigidity of the second cross-member is 1 / 2 or less of the rigidity of the first cross-member.

[0014] According to this configuration, since the second cross-member is more likely to be deformed than the first cross-member, the second cross-member is likely to be deformed in accordance with the deformation of the first cross-member. Thereby, the suppressing effect described in the above (1) can be effectively exerted.

[0015] (6) In the cross-member according to any one of the above (1) to (5), the distance from the lower surface of the first cross-member to the upper surface of the second cross-member is greater than 1 / 2 of the cross-member height of the second cross-member.

[0016] According to this configuration, the height dimension of the damping member can be increased as compared with the height dimension of the damping member when the distance from the lower surface of the first cross-member to the upper surface of the second cross-member is 1 / 2 or less of the cross-member height of the second cross-member. Therefore, when the first cross-member and the second cross-member are deformed, the damping member can be largely deformed in the shear direction. Thereby, the suppressing effect described in the above (1) can be effectively exerted.

[0017] (7) The building that solves the above problems is a building including a building body, wherein the building body includes a first column, a second column disposed at a location away from the first column, and a floor portion supported by the first column and the second column, the floor portion includes a floor beam connecting the first column and the second column, and the floor beam is the cross-member according to any one of the above (1) to (6).

[0018] According to this configuration, in a building, the vibration of the floor can be suitably suppressed by the cross-member.

Effect of the Invention

[0019] According to the horizontal members and the building of the present disclosure, the vibration of the floor can be suitably suppressed.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0021] <Embodiment> With reference to FIGS. 1 to 6, the building 10 and the horizontal member 20 according to the present embodiment will be described.

[0022] <Building> As shown in FIG. 1, an example of the building 10 is a single-family house. The building 10 includes a building main body 11. The building main body 11 includes a first column 12, a second column 13, and a floor part 14. The second column 13 is arranged at a position away from the first column 12.

[0023] The floor part 14 constitutes the floor of the building 10. The floor of the building 10 is arranged, for example, on the living floor of the people in the building 10. The floor part 14 includes a floor beam 15 and a floor material 16. The floor material 16 is constituted by materials such as a flooring material, a tile, and a tatami mat. The floor material 16 is supported on the floor beam 15 via a joist (not shown).

[0024] The floor part 14 is supported by the first column 12 and the second column 13. The floor beam 15 of the floor part 14 connects, for example, the first column 12 and the second column 13. By arranging the floor material 16 on the floor beam 15 that connects the first column 12 and the second column 13, the floor of the building 10 is constructed. The floor beam 15 uses a lateral member 20 described later. In one example, the floor beam 15 is the lateral member 20. Note that in FIG. 1, the case where the floor part 14 constitutes the second - floor of the building main body 11 is illustrated, but the floor part 14 may also constitute the first - floor.

[0025] <Lateral member> As shown in FIGS. 1 and 2, the lateral member 20 suppresses the vibration of the floor in the building 10. The lateral member 20 has, in the longitudinal direction, a first end 21 and a second end 22 opposite to the first end 21. The first end 21 of the lateral member 20 is connected to the first support body 71. The second end 22 of the lateral member 20 is connected to the second support body 72. The first support body 71 includes at least one of a beam, a girder, and a column. The second support body 72 includes at least one of a beam, a girder, and a column. In one example, the first support body 71 is the first column 12, and the second support body 72 is the second column 13.

[0026] The lateral member 20 has a first lateral member 30, a second lateral member 40, a damping member 50, and a connecting member 60.

[0027] <First lateral member> As shown in FIGS. 1 and 2, the first lateral member 30 supports the floor material 16. The floor material 16 is arranged on the first lateral member 30. The first lateral member 30 may be provided as a part of the body of the building main body 11. The first lateral member 30 is constituted by, for example, wood.

[0028] The first lateral member 30 has, in the longitudinal direction, a third end 31 and a fourth end 32 opposite to the third end 31. In the vertical direction, the third end 31 of the first lateral member 30 overlaps with the first end 21 of the lateral member 20, and the fourth end 32 of the first lateral member 30 overlaps with the second end 22 of the lateral member 20. The third end 31 of the first lateral member 30 is connected to the first support body 71. The fourth end 32 of the first lateral member 30 is connected to the second support body 72.

[0029] As shown in FIG. 3, a first fixing fitting having, for example, two first metal plates PL1 is fixed to the first support body 71. A slit S1 is provided, for example, at the third end 31 of the first cross member 30. In one example, in a state where the first metal plate PL1 is disposed in the slit S1, a plurality of first pin members P1 penetrate through the first metal plate PL1 and the first cross member 30, whereby the third end 31 of the first cross member 30 is connected to the first support body 71. The first pin member P1 is, for example, a drift pin. Although not shown, the fourth end 32 of the first cross member 30 is also connected to the second support body 72 by the first fixing fitting and the first pin member P1.

[0030] <Second cross member> As shown in FIG. 2, the second cross member 40 is disposed below the first cross member 30 along the first cross member 30. In one example, the material of the second cross member 40 is the same as that of the first cross member 30.

[0031] The second cross member 40 has, in the longitudinal direction, a fifth end 41 and a sixth end 42 opposite to the fifth end 41. In the vertical direction, the fifth end 41 of the second cross member 40 overlaps with the first end 21 of the cross member 20, and the sixth end 42 of the second cross member 40 overlaps with the second end 22 of the cross member 20. The fifth end 41 of the second cross member 40 is connected to the first support body 71. The sixth end 42 of the second cross member 40 is connected to the second support body 72.

[0032] The rigidity of the second cross member 40 is lower than that of the first cross member 30. For this reason, the second cross member 40 is more flexible than the first cross member 30. In one example, the rigidity of the second cross member 40 is 1 / 2 or less of the rigidity of the first cross member 30. In one example, the rigidity of the second cross member 40 becomes lower than that of the first cross member 30 because the second cross member height H2 of the second cross member 40 is smaller than the first cross member height H1 of the first cross member 30. The rigidity of the second cross member 40 may become lower than that of the first cross member 30 by using a material having a lower rigidity than that of the first cross member 30 as the material of the second cross member 40.

[0033] As shown in FIG. 2, the distance G from the lower surface 33 of the first horizontal member 30 to the upper surface 43 of the second horizontal member 40 is greater than 1 / 2 of the height H2 of the second horizontal member 40 of the second horizontal member 40. In one example, the distance G is greater than the height H2 of the second horizontal member 40 of the second horizontal member 40 and less than the height H1 of the first horizontal member 30 of the first horizontal member 30. The distance G may also be greater than the height H1 of the first horizontal member 30 of the first horizontal member 30.

[0034] The height H1 of the first horizontal member 30 of the first horizontal member 30 is set to, for example, 390 mm or more. An example of the height H1 of the first horizontal member 30 of the first horizontal member 30 is 450 mm. The height H2 of the second horizontal member 40 of the second horizontal member 40 is set to, for example, 150 mm or more. An example of the height H2 of the second horizontal member 40 of the second horizontal member 40 is 150 mm.

[0035] As shown in FIG. 4, for example, a second fixing fitting having two second metal plates PL2 is fixed to the first support body 71. For example, a slit S2 is provided at the fifth end 41 of the second horizontal member 40. In one example, in a state where the second metal plate PL2 is disposed in the slit S2, at least one second pin member P2 penetrates the second metal plate PL2 and the second horizontal member 40, whereby the fifth end 41 of the second horizontal member 40 is connected to the first support body 71. The second pin member P2 is, for example, a drift pin. Although not shown, the sixth end 42 of the second horizontal member 40 is also connected to the second support body 72 by the second fixing fitting and the second pin member P2.

[0036] The number of second pin members P2 used to connect the second horizontal member 40 to the first support body 71 is less than the number of first pin members P1 used to connect the first horizontal member 30 to the first support body 71. In one example, the number of first pin members P1 used for the first horizontal member 30 to be connected to the first support body 71 is three or more. In one example, the number of second pin members P2 used for the second horizontal member 40 to be connected to the first support body 71 is two.

[0037] <Damping member> As shown in FIG. 2, the damping member 50 is disposed between the first cross member 30 and the second cross member 40. The upper surface 51 of the damping member 50 is attached to the lower surface 33 of the first cross member 30. The lower surface 52 of the damping member 50 is attached to the upper surface 43 of the second cross member 40.

[0038] The damping member 50 is fixed to the first cross member 30 so that the upper surface 51 of the damping member 50 does not shift with respect to the lower surface 33 of the first cross member 30. The upper surface 51 of the damping member 50 is attached to the lower surface 33 of the first cross member 30 via, for example, an adhesive. The damping member 50 is fixed to the second cross member 40 so that the lower surface 52 of the damping member 50 does not shift with respect to the upper surface 43 of the second cross member 40. The lower surface 52 of the damping member 50 is attached to the upper surface 43 of the second cross member 40 via, for example, an adhesive.

[0039] The damping member 50 deforms in accordance with the deformation of the cross member 20. Specifically, the damping member 50 deforms such that the upper surface 51 and the lower surface 52 of the damping member 50 move relative to each other in the shear direction due to the displacement between the lower surface 33 of the first cross member 30 and the upper surface 43 of the second cross member 40 caused by the bending of the cross member 20. The damping member 50 is disposed between the lower surface 33 of the first cross member 30 and the upper surface 43 of the second cross member 40 so as not to deform in the normal state. The normal state indicates a state in which the cross member 20 is not deformed.

[0040] The damping member 50 is more likely to deform in the longitudinal direction of the cross member 20 than in the vertical direction when the damping member 50 is attached to the cross member 20. For example, laminated rubber is used as the damping member 50.

[0041] The damping member 50 has a first damping member 53 and a second damping member 54. Preferably, the first damping member 53 and the second damping member 54 are configured in the same shape. Preferably, the first damping member 53 and the second damping member 54 are made of the same material.

[0042] The first damping member 53 is disposed between the intermediate line CL of the cross member 20 and the first end 21 in the longitudinal direction of the cross member 20. The intermediate line CL is a line located at the longitudinal middle of the cross member 20. The first damping member 53 is disposed within a range of not more than 1 / 4 of the span SP of the cross member 20 in the longitudinal direction from the first end 21 of the cross member 20 in the longitudinal direction of the cross member 20. For example, in the longitudinal direction, the first length L1 from the center of the first damping member 53 to the first end 21 of the cross member 20 is within 1 / 4 of the length of the span SP. Preferably, the entire first damping member 53 is disposed within a range of not more than 1 / 4 of the span SP of the cross member 20 in the longitudinal direction from the first end 21 of the cross member 20 in the longitudinal direction of the cross member 20. Preferably, the first damping member 53 is disposed at a position close to the first end 21 with a gap from the first support body 71 to such an extent that the first damping member 53 is deformable.

[0043] The second damping member 54 is disposed between the intermediate line CL of the cross member 20 and the second end 22 in the longitudinal direction of the cross member 20. The second damping member 54 is disposed within a range of not more than 1 / 4 of the span SP from the second end 22 of the cross member 20 in the longitudinal direction of the cross member 20. For example, in the longitudinal direction, the second length L2 from the center of the second damping member 54 to the second end 22 of the cross member 20 is within 1 / 4 of the length of the span SP. Preferably, the entire second damping member 54 is disposed within a range of not more than 1 / 4 of the span SP from the second end 22 of the cross member 20 in the longitudinal direction of the cross member 20. Preferably, the second damping member 54 is disposed at a position close to the second end 22 with a gap from the second support body 72 to such an extent that the second damping member 54 is deformable.

[0044] <Connecting member> As shown in FIG. 2, the connecting member 60 connects the first cross member 30 and the second cross member 40. The connecting member 60 deforms the second cross member 40 in accordance with the deformation of the first cross member 30. Specifically, the connecting member 60 bends the second cross member 40 by pressing the second cross member 40 downward when the first cross member 30 bends downward.

[0045] In one example, the rigidity of the connecting member 60 in the vertical direction is greater than the rigidity of the second cross-member 40 in the vertical direction. In one example, the rigidity of the connecting member 60 in the vertical direction is 1.5 times or more the rigidity of the second cross-member 40 in the vertical direction. Preferably, the rigidity of the connecting member 60 in the vertical direction is 2 times or more the rigidity of the second cross-member 40 in the vertical direction.

[0046] In the vertical direction, the connecting member 60 is less likely to deform than the damping member 50. The connecting member 60 is made of, for example, metal. The connecting member 60 may be made of wood, resin, etc. as long as the rigidity of the connecting member 60 in the vertical direction is greater than the rigidity of the damping member 50 in the vertical direction. The connecting member 60 may be configured not to deform in the longitudinal direction.

[0047] The rigidity of the connecting member 60 in the vertical direction is greater than the rigidity of the damping member 50 in the vertical direction. In one example, the rigidity of the connecting member 60 in the vertical direction is 1.5 times or more the rigidity of the damping member 50 in the vertical direction. Preferably, the rigidity of the connecting member 60 in the vertical direction is 2 times or more the rigidity of the damping member 50 in the vertical direction.

[0048] The connecting member 60 is disposed between the first cross-member 30 and the second cross-member 40. The connecting member 60 is attached to the lower surface 33 of the first cross-member 30 and the upper surface 43 of the second cross-member 40. The connecting member 60 is attached to the first cross-member 30 and the second cross-member 40 via a mounting member (not shown). The connecting member 60 is fixed to the first cross-member 30 and the second cross-member 40 so that the connecting member 60 does not shift with respect to the first cross-member 30 and the second cross-member 40.

[0049] The connecting member 60 is disposed near the center between the first end 21 and the second end 22 in the longitudinal direction of the cross-member 20. Preferably, in the vertical direction, the center of the connecting member 60 overlaps with the intermediate line CL. The closer the position where the connecting member 60 is disposed is to the middle between the first end 21 and the second end 22, the easier it is for the second cross-member 40 to deform in response to the deformation of the first cross-member 30.

[0050] The connecting member 60 is disposed between the first damping member 53 and the second damping member 54 in the longitudinal direction of the cross member 20. Preferably, in the longitudinal direction of the cross member 20, the length from the center of the connecting member 60 to the center of the first damping member 53 is equal to the length from the center of the connecting member 60 to the center of the second damping member 54.

[0051] <Function of the Embodiment> The first function of this embodiment will be described. As shown in FIGS. 1, 5, and 6, when a person moves on the floor of the building 10, the cross member 20 deflects, causing the floor of the building 10 to vibrate.

[0052] FIG. 5 illustrates a case where the deformation of the cross member 20 is relatively small. When the deformation of the cross member 20 is relatively small, for example, when a person walks on the floor. When the load applied to the first cross member 30 is small, no shear-direction deformation occurs in the damping member 50. For example, when a small load SW is applied to the first cross member 30 in the vertical direction, the small load SW dispersed by the damping member 50 and the connecting member 60 is transmitted to the second cross member 40. As a result, since the second cross member 40 can receive the small load SW applied to the first cross member 30, the deflection of the cross member 20 is suppressed.

[0053] FIG. 6 illustrates a case where the deformation of the cross member 20 is relatively large. When the deformation of the cross member 20 is relatively large, for example, when a person runs on the floor. When the load applied to the first cross member 30 is large, deformation in the shear direction occurs in the damping member 50. For example, when a large load BW is applied to the first cross member 30 in the vertical direction, the deformation of the first cross member 30 is transmitted to the second cross member 40 by the connecting member 60, causing the second cross member 40 to deform. When the first cross member 30 deforms, as shown by the arrows in FIG. 6, the upper surface 34 of the first cross member 30 contracts from the third end 31 and the fourth end 32 toward the center line CL, and the lower surface 33 of the first cross member 30 expands from the center line CL toward the third end 31 and the fourth end 32. Also, when the second cross member 40 deforms, as shown by the arrows in FIG. 6, the upper surface 43 of the second cross member 40 contracts from the fifth end 41 and the sixth end 42 toward the center line CL, and the lower surface 44 of the second cross member 40 expands from the center line CL toward the fifth end 41 and the sixth end 42. As a result, the damping member 50 deforms such that the upper surface 51 and the lower surface 52 of the damping member 50 are displaced in the shear direction. A restoring force corresponding to the deformation of the damping member 50 is generated in the damping member 50. By this restoring force, the expansion of the lower surface 33 of the first cross member 30 is suppressed. By suppressing the expansion of the lower surface 33 of the first cross member 30, the deformation of the first cross member 30 is suppressed. As a result, the vibration of the first cross member 30 is suppressed.

[0054] The second operation of the present embodiment will be described. The damping member 50 is disposed at a position away from the center line CL in the longitudinal direction of the cross member 20. When the cross member 20 deforms, the amount of deformation due to the expansion of the lower surface 33 of the first cross member 30 is larger as it is closer to the third end 31 or the fourth end 32. Also, when the cross member 20 deforms, the amount of deformation due to the contraction of the upper surface 43 of the second cross member 40 is larger as it is closer to the fifth end 41 or the sixth end 42. Therefore, the greater the damping member 50 is away from the center line CL in the longitudinal direction, the greater the displacement between the upper surface 51 and the lower surface 52 of the damping member 50 in the shear direction becomes. The greater the displacement between the upper surface 51 and the lower surface 52 of the damping member 50 in the shear direction when the cross member 20 deforms, the more the vibration of the first cross member 30 can be suppressed by the damping member 50.

[0055] Describe the third effect of this embodiment. In a building, a beam with a large span may be used to form a large floor. In addition, a beam with a large span may be used on the upper floor to install a skeleton staircase. When the span of the beam increases, the floor beam is likely to vibrate due to people walking or the like, and there is a risk that the occupants will feel uncomfortable. Since the lateral member 20 can be used as the floor beam to suppress the vibration of the floor, the degree of freedom in the design of the building 10 can be improved.

[0056] <Effects of the embodiment> Describe the effects of this embodiment. (1) The lateral member 20 includes a first lateral member 30, a second lateral member 40, a damping member 50, and a connecting member 60. The damping member 50 includes a first damping member 53 and a second damping member 54. The connecting member 60 is disposed between the first damping member 53 and the second damping member 54 in the longitudinal direction of the lateral member 20.

[0057] According to this configuration, since the connecting member 60 connects the first lateral member 30 and the second lateral member 40, the deflection of the first lateral member 30 can be suppressed.

[0058] In addition, since the first lateral member 30 and the second lateral member 40 are connected by the connecting member 60, the second lateral member 40 bends in accordance with the bending of the first lateral member 30 due to the load. The lower surface 33 of the first lateral member 30 expands on both sides around the center line CL, while the upper surface 43 of the second lateral member 40 contracts toward the center line CL. At this time, forces in the shear direction are applied to the first damping member 53 and the second damping member 54. Due to the deformation of the first damping member 53 and the second damping member 54 in the shear direction, a force that prevents the expansion of the lower surface 33 of the first lateral member 30 acts on the first damping member 53, and a force that prevents the contraction of the upper surface 43 of the second lateral member 40 acts on the second damping member 54. Due to this suppression effect, the bending of the first lateral member 30 is suppressed, so that the vibration of the first lateral member 30 can be suppressed.

[0059] (2) The damping member 50 is more likely to deform in the longitudinal direction than in the vertical direction.

[0060] According to this configuration, when the second cross member 40 bends in response to the bending of the first cross member 30, the damping member 50 can be preferably deformed in the shear direction.

[0061] (3) The first damping member 53 is arranged in the longitudinal direction within a range not exceeding 1 / 4 of the span SP of the cross member 20 from the first end 21 of the cross member 20. The second damping member 54 is arranged in the longitudinal direction within a range not exceeding 1 / 4 of the span SP of the cross member 20 from the second end 22 of the cross member 20.

[0062] According to this configuration, the damping member 50 is arranged so as to be closer to both ends of the cross member 20. Since the deformation difference between the lower surface 33 of the first cross member 30 and the upper surface 43 of the second cross member 40 is likely to be larger at the longitudinal ends than at the intermediate line CL of the cross member 20, the suppressing action described in (1) above can be effectively exerted.

[0063] (4) The rigidity of the connecting member 60 in the vertical direction is larger than the rigidity of the damping member 50 in the vertical direction.

[0064] According to this configuration, the second cross member 40 can be deformed in response to the deformation of the first cross member 30 as compared with the case where the rigidity of the connecting member 60 is the same as or smaller than the rigidity of the damping member 50. Therefore, the suppressing action described in (1) above can be effectively exerted.

[0065] (5) The rigidity of the second cross member 40 is 1 / 2 or less of the rigidity of the first cross member 30.

[0066] According to this configuration, since the second cross member 40 is more likely to deform than the first cross member 30, the second cross member 40 is likely to deform in response to the deformation of the first cross member 30. Thereby, the suppressing action described in (1) above can be effectively exerted.

[0067] (6) The distance G from the lower surface 33 of the first cross member 30 to the upper surface 43 of the second cross member 40 is larger than 1 / 2 of the second cross member height H2 of the second cross member 40.

[0068] According to this configuration, the height dimension of the damping member 50 can be made larger than the height dimension of the damping member 50 when the interval G is 1 / 2 or less of the height H2 of the second cross-member 40 of the second cross-member 40. Therefore, when the first cross-member 30 and the second cross-member 40 are deformed, the damping member 50 can be largely deformed in the shear direction. Thereby, the suppression effect described in the above (1) can be effectively exerted.

[0069] The larger the interval G from the lower surface 33 of the first cross-member 30 to the upper surface 43 of the second cross-member 40, the more likely the deformation difference between the lower surface 33 of the first cross-member 30 and the upper surface 43 of the second cross-member 40 becomes. By making the interval G larger than 1 / 2 of the height H2 of the second cross-member 40 of the second cross-member 40, the suppression effect described in the above (1) can be effectively exerted.

[0070] (7) The building main body 11 includes a first column 12, a second column 13, and a floor portion 14. The floor portion 14 includes a floor beam 15 that connects the first column 12 and the second column 13. The floor beam 15 is a cross-member 20.

[0071] According to this configuration, in the building 10, the vibration of the floor can be suitably suppressed by the cross-member 20.

[0072] <Modification example> The above embodiment is an example of the form that the building 10 and the cross-member 20 can take, and is not intended to limit the form. The building 10 and the cross-member 20 can take a form different from the form illustrated in the above embodiment. Examples thereof are forms in which a part of the configuration of the embodiment is replaced, changed, or omitted, or forms in which a new configuration is added to the embodiment. Modification examples of the embodiment are shown below.

[0073] ·At least one of the first support body 71 and the second support body 72 may be a body other than a pillar. In this modification example, the first support body 71 may be a body other than the first pillar 12, and the second support body 72 may be a body other than the second pillar 13. For example, the floor portion 14 may include two beams arranged perpendicular to the floor beam 15. The transverse member 20, which is the floor beam 15, is arranged to connect the two beams.

[0074] ·The rigidity of the second transverse member 40 may be lower than that of the first transverse member 30 and greater than 1 / 2 of the rigidity of the first transverse member 30.

[0075] ·The damping member 50 may be more likely to deform in the vertical direction than in the longitudinal direction of the transverse member 20 as long as it can deform in the longitudinal direction of the transverse member 20. Also in this modification example, when the deformation of the transverse member 20 is relatively small, the small load SW applied to the first transverse member 30 can be received by the second transverse member 40 via the connecting member 60, so the deformation of the transverse member 20 is suppressed. Further, when the deformation of the transverse member 20 is relatively large, the damping member 50 deforms in the longitudinal direction of the transverse member 20, so the damping member 50 can absorb the vibration of the first transverse member 30, and thus the vibration of the transverse member 20 can be suppressed.

[0076] ·The first damping member 53 may be arranged in a range that is farther from the first end 21 of the transverse member 20 than 1 / 4 of the span SP of the transverse member 20 in the longitudinal direction of the transverse member 20. For example, in the longitudinal direction, the first length L1 from the center of the first damping member 53 to the first end 21 of the transverse member 20 may be greater than 1 / 4 of the length of the span SP. The second damping member 54 may be arranged in a range that is farther from the second end 22 of the transverse member 20 than 1 / 4 of the span SP of the transverse member 20 in the longitudinal direction of the transverse member 20. For example, in the longitudinal direction, the second length L2 from the center of the second damping member 54 to the second end 22 of the transverse member 20 may be greater than 1 / 4 of the length of the span SP.

[0077] ·The damping member 50 may be made of something other than laminated rubber. Examples of damping members 50 other than laminated rubber include viscoelastic rubber, springs arranged horizontally, hydraulic dampers, and magnetic dampers.

[0078] ·The first damping member 53 may be composed of two or more damping members, and the second damping member 54 may be composed of two or more damping members.

[0079] ·The rigidity of the connecting member 60 may be greater than the rigidity of the second cross-member 40 in the vertical direction and less than 1.5 times the rigidity of the second cross-member 40 in the vertical direction.

[0080] The following techniques are disclosed in this specification. [Appendix 1] A cross-member for suppressing floor vibration in a building, comprising a first cross-member supporting a floor material, a second cross-member disposed below the first cross-member along the first cross-member, a damping member disposed between the first cross-member and the second cross-member, and a connecting member disposed between the first cross-member and the second cross-member, wherein the damping member has a first damping member and a second damping member, and the connecting member is disposed between the first damping member and the second damping member in the longitudinal direction of the cross-member.

[0081] [Appendix 2] The damping member according to Appendix 1 is more likely to deform in the longitudinal direction than in the vertical direction.

[0082] [Appendix 3] The first damping member is disposed in the longitudinal direction within a range of not more than 1 / 4 of the length of the span of the cross-member from the first end of the cross-member, and the second damping member is disposed in the longitudinal direction within a range of not more than 1 / 4 of the length of the span from the second end of the cross-member opposite to the first end in the cross-member.

[0083] [Appendix 4] The horizontal member according to Supplementary Note 1, wherein the rigidity of the connecting member in the vertical direction is greater than the rigidity of the damping member in the vertical direction.

[0084] [Supplementary Note 5] The horizontal member according to Supplementary Note 1, wherein the rigidity of the second horizontal member is 1 / 2 or less of the rigidity of the first horizontal member.

[0085] [Supplementary Note 6] The horizontal member according to Supplementary Note 1, wherein the distance from the lower surface of the first horizontal member to the upper surface of the second horizontal member is greater than 1 / 2 of the height of the second horizontal member.

[0086] [Supplementary Note 7] A building including a building body, wherein the building body includes a first column, a second column disposed at a location away from the first column, and a floor portion supported by the first column and the second column, the floor portion includes a floor beam connecting the first column and the second column, and the floor beam is the horizontal member according to any one of Supplementary Notes 1 to 6.

Explanation of Reference Numerals

[0087] 10... Building, 11... Building body, 12... First column, 13... Second column, 14... Floor portion, 15... Floor beam, 16... Floor material, 20... Horizontal member, 21... First end, 22... Second end, 30... First horizontal member, 40... Second horizontal member, 50... Damping member, 53... First damping member, 54... Second damping member, 60... Connecting member.

Claims

1. A lateral member for suppressing the vibration of a floor in a building, a first lateral member for supporting a floor material, a second lateral member disposed below the first lateral member along the first lateral member, a damping member disposed between the first lateral member and the second lateral member, a connecting member disposed between the first lateral member and the second lateral member, and having, the damping member has a first damping member and a second damping member, the connecting member is disposed between the first damping member and the second damping member in the longitudinal direction of the lateral member, Lateral member.

2. the damping member is more likely to deform in the longitudinal direction than in the vertical direction, The lateral member according to claim 1.

3. the first damping member is disposed in the longitudinal direction within a range of not more than 1 / 4 of the length of the span of the lateral member from the first end of the lateral member, the second damping member is disposed in the longitudinal direction within a range of not more than 1 / 4 of the length of the span from the second end of the lateral member opposite to the first end in the lateral member, The lateral member according to claim 1.

4. the rigidity of the connecting member in the vertical direction is greater than the rigidity of the damping member in the vertical direction, The lateral member according to claim 1.

5. the rigidity of the second lateral member is 1 / 2 or less of the rigidity of the first lateral member, The lateral member according to claim 1.

6. the distance from the lower surface of the first lateral member to the upper surface of the second lateral member is greater than 1 / 2 of the lateral member height of the second lateral member, The lateral member according to claim 1.

7. A building including a building body, The building body is, a first column, a second column disposed at a location away from the first column, and a floor portion supported by the first column and the second column. The floor portion includes a floor beam connecting the first column and the second column, and the floor beam is the transverse member according to any one of claims 1 to 6. Building.

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