Building

Abstract

To suppress shaking of a building with a dome-shaped frame.SOLUTION: A building 10 has a dome-shaped frame 20 formed in an upwardly convex shape and having an opening 20A in the center, a central frame 30 covering the opening 20A, and a plurality of vibration control devices 40 provided at a boundary between the dome-shaped frame 20 and the central frame 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to buildings. [Background technology]

[0002] The following Patent Document 1 describes a configuration in which a central fan room having a compression ring is provided in the center of a dome-shaped peripheral structure. By providing such a compression ring, it is possible to resist long-term compressive stress generated by the weight of the peripheral structure. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-6201 Summary of the Invention [Problem to be solved by the invention]

[0004] The dome-shaped structure shown in the above-mentioned Patent Document 1 has a long support span because it does not have any pillars or the like on the inside of the periphery. Therefore, when subjected to earthquake motion, it tends to shake more than structures that have pillars or the like.

[0005] In consideration of the above, an object of the present invention is to suppress swaying of a building having a dome-shaped frame. [Means for solving the problem]

[0006] The building of claim 1 comprises a dome-shaped frame formed in an upward convex shape and having an opening in the center, a central frame covering the opening, and a plurality of vibration control devices provided at the boundary between the dome-shaped frame and the central frame.

[0007] The building in claim 1 has a dome-shaped frame. Since a dome-shaped frame does not have columns or the like on the inside of the periphery, the support span is long and the building sways greatly.

[0008] In response to this, this building has an opening in the center of the dome-shaped frame, which is covered by the central frame. A vibration control device is installed at the boundary between the dome-shaped frame and the central frame. This allows the vibration control device to expand and contract due to the relative displacement between the dome-shaped frame and the central frame, suppressing shaking.

[0009] A building according to a second aspect of the present invention is the building according to the first aspect, wherein the vibration damping device is arranged across a direction intersecting the vertical and horizontal directions.

[0010] In the building of claim 2, the vibration control device is spanned along a direction intersecting the vertical and horizontal directions, so that shaking can be suppressed regardless of whether the dome-shaped structure and the central structure are displaced relative to each other in the vertical or horizontal direction.

[0011] The building of claim 3 is the building of claim 1 or 2, wherein the dome-shaped structure comprises radially arranged roofing materials and an annular compression ring that connects the roofing materials at the center and forms the circular opening.

[0012] In the building of claim 3, a vibration control device is placed between the annular compression ring and the central frame. Therefore, multiple vibration control devices are placed along the circular boundary. This makes it easier to suppress the shaking of the building in any direction.

[0013] The building of claim 4 is the building of claim 1 or 2, in which the dome-shaped structure has arch trusses, two in each of two intersecting directions, and the rectangular opening is formed in the area surrounded by the arch trusses.

[0014] In the building of claim 4, the opening is formed by the arch truss that forms the dome-shaped frame. Therefore, there is no need to provide a structure such as a compression ring to form the opening. Effect of the Invention

[0015] According to the present invention, it is possible to suppress swaying of a building having a dome-shaped frame. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1A is a plan view showing a building according to a first embodiment of the present invention, and FIG. 1B is a cross-sectional view taken along line BB in FIG. [Diagram 2] 1A is a partial plan view showing a modified example in which the central structure is a radial grid, FIG. 1B is a partial cross-sectional view showing a modified example in which the beams of the central structure are simple beams, and FIG. 1C is a partial cross-sectional view showing a modified example in which the beams of the central structure are formed into a dome shape. [Diagram 3] 1A is a partial plan view showing a modified example in which the central frame is formed from plate material, and a cross-sectional view taken along line BB in (A), and (C) is a cross-sectional view taken along line BB in (A) showing a modified example in which a fall prevention stopper is provided. [Figure 4] FIG. 10(A) is a plan view showing a building according to a second embodiment of the present invention, and FIG. 10(B) is a cross-sectional view taken along line BB in FIG. [Diagram 5] 1A is a partial plan view showing a modified example of the extension direction of the beams that form the central structure, FIG. 1B is a partial cross-sectional view showing a modified example in which the beams of the central structure are simple beams, and FIG. 1C is a partial cross-sectional view showing a modified example in which the beams of the central structure are formed into a dome shape. [Figure 6] 1A is a partial plan view showing a modified example in which the central frame is formed from plate material, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. 1C is a cross-sectional view taken along line BB in FIG. 1A, showing a modified example in which a fall prevention stopper is provided. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, a beam 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.

[0018] In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment and various modified examples, within the scope of the purpose of the present disclosure.

[0019] First Embodiment A building 10 according to a first embodiment of the present invention includes a dome-shaped frame 20, a central frame 30, and a vibration control device 40, as shown in FIGS.

[0020] (Dome-shaped structure) The dome-shaped frame 20 is a structure formed in an upwardly convex shape, has an opening 20A in the center, and is formed in a circular shape in a plan view. The "circular shape" includes shapes such as a perfect circle, an ellipse, and an oval.

[0021] The dome-shaped frame 20 includes a roof material 22, a connecting material 24, and a compression ring 26.

[0022] The roof material 22 is a plurality of beams radially laid from the center to the outer edge of the dome-shaped frame 20. One end of the roof material 22 (the inner end of the dome-shaped frame 20) is rigidly joined to the compression ring 26, and the other end (the outer end of the dome-shaped frame 20) is supported by the support structure G.

[0023] The roof material 22 can be supported by various joining methods, such as rigid joining or pin joining, to the support structure G. The roof material 22 may also be supported by the support structure G via a seismic isolation device (not shown).

[0024] The support structure G may be the concrete foundation of the building 10, or may be concrete forming the pillars, walls, etc. of the building 10. When the support structure G is the concrete foundation, the dome-shaped framework 20 forms the building 10 as a dome structure. On the other hand, when the support structure G is a pillar or a wall, the dome-shaped framework 20 forms the dome-shaped roof of the building 10.

[0025] The connecting members 24 are beam members that connect the roof materials 22 in the circumferential direction and are connected in an annular shape. A plurality of connecting members 24 are provided in the radial direction of the dome-shaped frame 20. The outermost connecting member 24 connects the other ends of the roof materials 22 (the outer ends of the dome-shaped frame 20).

[0026] The roof material 22 and the connecting members 24 can each be formed as a simple beam using steel or wood. The roof material 22 and the connecting members 24 may each be a truss beam that combines an upper chord member, a lower chord member, and a diagonal member. The truss beam may be a planar truss or a space truss. Diagonal members may be arranged on the curved structural surface formed by the roof material 22 and the connecting members 24.

[0027] The compression ring 26 is an annular beam material that connects the roof materials 22 at the center of the dome-shaped frame 20. The compression ring 26 is made of steel, wood, or the like. Since the compression ring 26 connects the ends of the roof materials 22 together, no roof materials 22 are placed inside the compression ring 26. As a result, the compression ring 26 forms a circular opening 20A in the dome-shaped frame 20. Compressive stress is generated in the compression ring 26 by the weight of the roof materials 22.

[0028] (Central frame) The central frame 30 is a lid-like structure that covers the opening 20A of the dome-shaped frame 20. The central frame 30 is formed including beams 32A and 32B that are spanned inside the compression ring 26 in directions perpendicular to each other.

[0029] The beams 32A and 32B are rigidly joined to each other to form a rectangular grid (parallel grid) frame in plan view. The beams 32A and 32B are truss beams, and the ends of the upper chords of the beams 32A and 32B are pin-joined to the upper ends of the compression rings 26.

[0030] (Vibration control device) The vibration control device 40 is a vibration control damper provided at the boundary between the dome-shaped frame 20 and the central frame 30. The "boundary" is a position that straddles the dome-shaped frame 20 and the central frame 30. As the vibration control damper, any damper can be used, such as a velocity-dependent oil damper or a displacement-dependent steel damper. Also, various types of dampers can be used in combination.

[0031] As an example, the vibration damping device 40 is bridged across the lower ends of the beams 32A and 32B that form the central frame 30 and the lower end of the compression ring 26.

[0032] A plurality of vibration damping devices 40 are provided in the circumferential direction of the compression ring 26. For example, the vibration damping devices 40 can be provided at both ends of all of the beams 32A and 32B that form the central frame 30.

[0033] Alternatively, the vibration damping devices 40 can be provided at predetermined intervals in the circumferential direction of the compression ring 26. When providing the vibration damping devices 40 at predetermined intervals, the compression ring 26 can be divided at those intervals, and the vibration damping devices 40 can be provided at the end of the beam 32A or 32B that is closest to the division position.

[0034] In this embodiment, the beam depth of the beams 32A and 32B forming the central frame 30 is smaller than the beam depth of the compression ring 26. For this reason, the vibration damping device 40 is disposed along a direction intersecting the vertical and horizontal directions (in other words, inclined with respect to the vertical and horizontal planes).

[0035] (effect) The building 10 according to the first embodiment has a dome-shaped frame 20. Since the dome-shaped frame 20 does not have columns or the like on the inside of the periphery, it has a long support span and is subject to large vibrations.

[0036] In response to this, in this building 10, an opening 20A is provided in the center of the dome-shaped frame 20, and the opening 20A is covered by a central frame 30. A vibration control device 40 is provided at the boundary between the dome-shaped frame 20 and the central frame 30. This allows the vibration control device 40 to expand and contract due to the relative displacement between the dome-shaped frame 20 and the central frame 30, thereby suppressing shaking.

[0037] In addition, the vibration control device 40 is disposed in a direction intersecting the vertical and horizontal directions, so that vibration can be suppressed even if the dome-shaped frame 20 and the central frame 30 are displaced relatively in either the vertical or horizontal direction.

[0038] In addition, in this building 10, a vibration control device 40 is disposed between the annular compression ring 26 and the central frame 30. Therefore, a plurality of vibration control devices 40 are disposed along the circular boundary. This makes it easier to suppress shaking of the building 10 regardless of the direction in which the building 10 shakes.

[0039] By suppressing the shaking of the building 10, even if lighting equipment or audio equipment is suspended from the central frame 30 or the compression ring 26, the falling off of these equipment can be suppressed.

[0040] (Modification) In the first embodiment, the central frame 30 is formed by beams 32A and 32B that are arranged in directions perpendicular to each other to form a frame having a rectangular grid (parallel grid) shape in a plan view, but the embodiment of the present invention is not limited to this.

[0041] For example, as shown in Fig. 2(A), the central frame 30 may be formed of radiating materials 34A and connecting materials 34B to form a frame in the shape of a radial grid in plan view. The radiating materials 34A are beam materials that are radially laid from the center of the dome-shaped frame 20 to the outer edge inside the compression ring 26. The connecting materials 34B are beam materials that connect the radiating materials 34A in the circumferential direction and are connected in an annular shape.

[0042] Moreover, the beams 32A and 32B forming the central frame 30 may be formed by simple beams as shown in Fig. 2(B) instead of truss beams. The radiating material 34A and the connecting material 34B shown in Fig. 2(A) may also be truss beams or simple beams. In this specification, a simple beam means a beam formed by, for example, one beam in the vertical direction, and does not include a beam formed by multiple members in the vertical direction such as a truss beam.

[0043] If these beams are simple beams, it is possible to reduce the processing time and processing costs required for manufacturing the central frame 30. Also, if these beams are truss beams, it is possible to increase the span and reduce the weight.

[0044] In addition, the beams 32A and 32B forming the central frame 30 may form a dome-shaped frame as shown in Fig. 2(C). Such a dome-shaped frame can also be formed using radiating material 34A and connecting material 34B. By using a dome-shaped frame, the height of the internal space can be increased.

[0045] Furthermore, the beams 32A, 32B and the radiation member 34A may be pin-joined to the compression ring 26 as described above, but the embodiment of the present invention is not limited to this.

[0046] For example, the beams 32A, 32B and the radiating material 34A may be rigidly connected to the compression ring 26. Alternatively, the beams 32A, 32B and the radiating material 34A may simply rest on the compression ring 26 without being connected thereto.

[0047] Moreover, the central frame 30 may be formed using plate materials 36 shown in Figures 3(A) to 3(C) instead of beam materials. The plate materials 36 can be formed using various materials, such as steel materials, wood materials such as CLT, resin materials such as polycarbonate, precast concrete, cast-in-place concrete, etc.

[0048] When the plate material 36 is used as the central frame 30, the plate material 36 and the compression ring 26 are connected by a vibration damping device 40. In this manner, the configuration of the central frame 30 can be appropriately selected according to the required design.

[0049] 3(B) shows an example in which the outer edge of the plate material 36 is fixed to the compression ring 26. The method of fixing the plate material 36 to the compression ring 26 is appropriately selected depending on the materials of the plate material 36 and the compression ring 26. For example, if the plate material 36 and the compression ring 26 are made of steel, high-strength bolts, welding, or the like can be used.

[0050] 3(C) shows an example in which the outer edge of the plate material 36 is not fixed to the compression ring 26. When the outer edge of the plate material 36 is not fixed to the compression ring 26, a drop-out prevention stopper 36A that protrudes downward may be formed on the inside of the outer edge of the plate material 36. As an example, the drop-out prevention stopper 36A is formed over the outer edge of the plate material 36. This makes it possible to prevent the plate material 36 from dropping out to the outside of the compression ring 26.

[0051] In the first embodiment, the dome-shaped frame 20 is formed in a circular shape in a plan view, but the embodiment of the present invention is not limited to this. For example, the dome-shaped frame 20 may be polygonal. When the dome-shaped frame 20 is polygonal, the connecting members 24 and the compression ring 26 can also be polygonal.

[0052] In addition, in the first embodiment, the beam depth of the beams 32A and 32B that form the central structure 30 is smaller than the beam depth of the compression ring 26, and the vibration damping device 40 is arranged at an incline with respect to the vertical and horizontal planes, but the embodiment of the present invention is not limited to this.

[0053] For example, the beam depths of the beams 32A, 32B and the compression ring 26 can be made substantially the same, and the vibration damping device 40 can be disposed horizontally.

[0054] Furthermore, in the present invention, the beam depth of the beams 32A, 32B and the compression ring 26 is not particularly limited, and regardless of these beam depths, the vibration damping device 40 may be arranged at an angle to the vertical and horizontal planes, or may be arranged horizontally.

[0055] Second Embodiment 4(A) and (B), the building 12 according to the first embodiment of the present invention includes a dome-shaped frame 50, a central frame 60, and a vibration control device 40. The vibration control device 40 has the same configuration as in the first embodiment, and therefore a description thereof will be omitted.

[0056] (Dome-shaped structure) The dome-shaped frame 50, like the dome-shaped frame 20 of the first embodiment, is a building formed in an upwardly convex shape with an opening 50A in the center, and is formed in a circular shape in a plan view.

[0057] The dome-shaped frame 50 is formed with an arch truss 52, arch members 54, and an outer peripheral member 56. The arch trusses 52 are keel beams that are provided in pairs in two mutually intersecting directions (two mutually perpendicular directions in this embodiment), and are provided between the outer edges of the dome-shaped frame 50. The arch trusses 52 are each a major beam of a truss structure formed in an upwardly convex shape. The arch trusses 52 may be a plane truss or a space truss.

[0058] Two arch trusses 52 spanning in one direction and two arch trusses 52 spanning in the other direction are rigidly connected, and a rectangular opening 50A is formed in the area surrounded by these four arch trusses 52.

[0059] The arch members 54 are beam members arranged parallel to the arch truss 52 outside the opening 50A, and are bridged between the outer edges of the dome-shaped frame 50. The arch members 54 form a rectangular grid (parallel grid) frame in plan view.

[0060] The arch members 54 can be formed as simple beams using steel or wood. The arch members 54 may also be truss beams that combine upper chord members, lower chord members, diagonal members, etc. The truss beams may be planar trusses or space trusses. Diagonal members may be arranged on the curved structural surface formed by the arch members 54 extending in two directions.

[0061] The outer peripheral member 56 is an annular beam member that forms the outer edge of the dome-shaped frame 50, and is connected to the ends of the arch truss 52 and the arch members 54. The outer peripheral member 56 may be omitted.

[0062] The arch truss 52 and the arch members 54 can be supported by various joining methods, such as rigid joining or pin joining, to the support structure G. The arch truss 52 and the arch members 54 may also be supported by the support structure G via a seismic isolation device (not shown).

[0063] (Central frame) The central frame 60 is a lid-like structure that covers the opening 50A of the dome-shaped frame 50. The central frame 60 is formed including beams 62A and 62B that are spanned in directions perpendicular to each other inside the arch truss 52. The beams 62A and 62B are arranged along the same direction as the arch truss 52.

[0064] The beams 62A and 62B are rigidly joined to each other to form a rectangular grid (parallel grid) frame in plan view. The beams 62A and 62B are truss beams, and the ends of the upper chords of the beams 62A and 62B are pin-joined to the upper end of the arch truss 52.

[0065] (effect) In the building 12 according to this embodiment, the opening 50A is formed by the arch truss 52 that forms the dome-shaped framework 50. For this reason, there is no need to provide a structure such as a compression ring to form the opening 50A.

[0066] (Modification) In the second embodiment, the central structure 30 is formed by beams 62A and 62B that are spanned in directions perpendicular to each other, and the beams 62A and 62B are arranged along the same direction as the arch truss 52, but the embodiment of the present invention is not limited to this.

[0067] For example, the beams 62A and 62B may be arranged along a direction intersecting with the arch truss 52 as shown in Fig. 5(A). Also, the beams 62A and 62B forming the central frame 60 may be formed of simple beams as shown in Fig. 5(B) instead of truss beams. Furthermore, the beams 62A and 62B forming the central frame 60 may form a dome-shaped frame as shown in Fig. 5(C).

[0068] In addition, the beams 62A and 62B as these beam members may be pin-joined to the arch truss 52 as described above, but the embodiment of the present invention is not limited to this. For example, the beams 62A and 62B may be rigidly joined to the arch truss 52. Alternatively, the beams 62A and 62B may simply be placed on the arch truss 52 without being joined thereto.

[0069] Moreover, the central frame 60 may be formed using plate materials 64 shown in Figures 6(A) to (C) instead of beam materials. The configuration of the plate materials 64 is similar to that of the plate materials 36, and detailed description will be omitted. The plate materials 64 may also be formed with anti-fall-off stoppers 64A shown in Figure 6(C) like the plate materials 36, or may not be formed with anti-fall-off stoppers 64A as shown in Figure 6(B).

[0070] In the second embodiment, the dome-shaped frame 50 is formed in a circular shape in a plan view, but the embodiment of the present invention is not limited to this. For example, the dome-shaped frame 50 may be polygonal. When the dome-shaped frame 50 is polygonal, the outer peripheral member 56 may also be polygonal. In this way, the present invention can be embodied in various forms. [Explanation of symbols]

[0071] 10. Building 12. Building 20 Dome-shaped structure 20A aperture 22 Roofing materials 26 Compression Ring 30 Central frame 40 Vibration control device 50 Dome-shaped frame 50A aperture 52 Arch truss 60 Central frame

Claims

1. A dome-shaped frame formed in an upwardly convex shape and having an opening in the center; A central frame covering the opening; A plurality of vibration control devices are provided at the boundary between the dome-shaped frame and the central frame; A building having:

2. The building according to claim 1 , wherein the vibration control device is disposed across a vertical direction and a horizontal direction.

3. The dome-shaped frame includes: The roofing material is laid out radially, and an annular compression ring that connects the roof material at a center portion and forms the circular opening.

3. A building according to claim 1 or 2.

4. The dome-shaped frame includes: It is equipped with two arch trusses that span two intersecting directions, The rectangular opening is formed in the portion surrounded by the arch truss.

3. A building according to claim 1 or 2.

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