Ceiling support structure

Abstract

To provide ceiling support structure that can make a curved surface of a curved ceiling smooth and firmly attach ceiling materials to an upper floor structure.SOLUTION: Ceiling support structure 20 supports a curved ceiling formed by a plurality of ceiling materials. The ceiling support structure 20 has a primary base 31 that supports the curved ceiling with truss structure sections 32 arranged side by side according to the shape of the curved ceiling, and a secondary base 22 with a three-dimensional lattice structure to which the truss structure sections 32 are connected and which is suspended from an upper level.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a ceiling support structure that supports a ceiling material that forms a curved ceiling. [Background technology]

[0002] As an example of a ceiling structure in which a ceiling is formed by multiple ceiling materials, Patent Document 1 discloses a ceiling structure having a hanging tool suspended from a structure on an upper floor and a rafter connected to the hanging tool via a rafter receiving part and to which the ceiling material is connected. When forming a curved ceiling in such a ceiling structure, the rafter receiving part and the rafter are formed into a shape that matches the shape of the curved ceiling. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-088271 A Summary of the Invention [Problem to be solved by the invention]

[0004] When forming a curved ceiling, in addition to achieving a smooth ceiling surface, it is also necessary for the ceiling material to be firmly attached to the structure on the upper floor to reliably prevent it from falling in the event of an earthquake or the like. [Means for solving the problem]

[0005] The ceiling support structure that solves the above problem supports a curved ceiling formed by a plurality of ceiling materials. The ceiling support structure has a primary base having truss structural parts arranged in parallel according to the shape of the curved ceiling and supporting the curved ceiling, and a secondary base having a three-dimensional lattice structure to which the truss structural parts are connected and which is suspended from the upper floor. Effect of the Invention

[0006] According to the present invention, it is possible to realize a smooth ceiling surface for a curved ceiling, and also to firmly attach the ceiling material to the structure of the upper floor. [Brief description of the drawings]

[0007] [Figure 1] 1 is a diagram showing a schematic configuration of a curved ceiling supported by one embodiment of a ceiling support structure; FIG. [Diagram 2] FIG. 2 is a side view showing a schematic configuration of a ceiling support structure. [Diagram 3] 13 is a perspective view showing a schematic view of a ceiling material connection portion connected to a truss structure portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] An embodiment of a ceiling support structure will be described with reference to Figs. 1 to 3. As shown in FIG. 1, a building 10 of this embodiment has a curved ceiling 12 above an entrance 11. The curved ceiling 12 is provided so as to gently curve from the second floor to the third floor of the building 10. The curved ceiling 12 is formed by a plurality of plate-shaped ceiling materials 15. The ceiling material 15 is, for example, a wooden material. The ceiling surface of the curved ceiling 12 is formed by the plate surfaces of the ceiling materials 15.

[0009] As shown in Fig. 2, the ceiling material 15 shown in Fig. 1 is supported by a ceiling support structure 20 connected to the structure of the upper story, such as beams 16 and slabs 17 that form the third story. In the following, the first horizontal direction, which is the left-right direction in Fig. 2, is called the X direction, the up-down direction is called the Z direction, and the second horizontal direction perpendicular to the X direction and Z direction is called the Y direction.

[0010] The ceiling support structure 20 has a secondary base 22 and a primary base 31. The secondary base 22 and the primary base 31 are formed from various steel materials. The secondary base 22 is suspended from the upper floor by being fixed directly to the beams 16, slabs 17, etc. or via a hanging device 23. The secondary base 22 is formed into a three-dimensional lattice structure by connecting vertical members 24, horizontal members 25, and primary base connecting members 26 with metal fittings (not shown) or the like.

[0011] The vertical members 24 extend along the Z direction. The upper ends of the vertical members 24 are fixed to the beams 16. Each vertical member 24 is formed to a length such that the lower end is located at a position a predetermined distance above the curved ceiling 12.

[0012] The horizontal member 25 extends in the horizontal direction, specifically in the X direction or the Y direction. The horizontal member 25 connects the vertical members 24 above the lower ends of the vertical members 24. The vertical members 24 and the horizontal members 25 are assembled in a stepped manner to match the shape of the curved ceiling 12. Note that the secondary base 22 may be provided with brace members 27 that connect the connecting portions of the vertical members 24 and the horizontal members 25.

[0013] One end of the primary substructure connecting member 26 is connected to the lower end of the vertical member 24. The other end of the primary substructure connecting member 26 is fixed to the lower end of another vertical member 24, or to a beam 16 or slab 17 on the upper level. The primary substructure connecting member 26 extends at an angle that matches the shape of the curved ceiling 12. The primary substructure 31 is connected to the primary substructure connecting member 26 via connecting fittings 28 provided in various places.

[0014] The primary foundation 31 has a truss structure section 32. The truss structure section 32 extends in the X direction as a whole. The truss structure sections 32 are arranged in parallel at a predetermined interval in the Y direction. The truss structure section 32 has an upper chord member 33, a lower chord member 34, and a diagonal member 35. The upper chord member 33 is disposed so as to be along the lower side of the secondary foundation 22 along the primary foundation connecting member 26. The upper chord member 33 is connected to the primary foundation connecting member 26 of the secondary foundation 22 via connecting fittings 28 at each point. The lower chord member 34 is formed in an approximate curve shape that matches the shape of the curved ceiling 12 at each position. The diagonal member 35 is connected to the connecting fittings 36 provided at each point of the upper chord member 33 and the lower chord member 34, thereby connecting the upper chord member 33 and the lower chord member 34.

[0015] As shown in Figure 3, the primary base 31 (see Figure 2) has a ceiling material connecting portion 40. The ceiling material connecting portion 40 is connected to the truss structure portion 32. The ceiling material connecting portion 40 is formed into a two-dimensional lattice structure when viewed from above by connecting members 41 and connecting members 42. Note that Figure 3 shows the ceiling material 15 together with the truss structure portion 32 and the ceiling material connecting portion 40, and the connecting members 41 and connecting members 42 that make up the ceiling material connecting portion 40 are marked with dots.

[0016] The connecting members 41 extend in the Y direction. The connecting members 41 are arranged in parallel at a predetermined interval in the X direction. Each connecting member 41 is formed in an approximation curve that matches the shape of the curved ceiling 12 at each position. Each connecting member 41 is arranged so as to pass directly below the lower chord members 34 of the truss structural parts 32 arranged in parallel in the Y direction. The connecting members 41 are connected to the lower chord members 34 via connecting fittings (not shown), thereby connecting those lower chord members 34.

[0017] The connecting materials 42 are members to which the ceiling materials 15 are connected. The connecting materials 42 extend in the X direction. The connecting materials 42 are arranged side by side at a predetermined interval in the Y direction. Each connecting material 42 is formed in an approximation curve that matches the shape of the curved ceiling 12 at each position. The connecting materials 42 are arranged so as to pass directly below the connection materials 41 arranged side by side in the X direction. The connecting materials 42 are connected to the connection materials 41 via connecting fittings (not shown), thereby connecting the connection materials 41.

[0018] The lower chord member 34, the connecting member 41, and the linking member 42 are formed of circular steel pipes. Circular steel pipes are superior in workability and accuracy in bending processing compared to square steel pipes and shaped steel. Therefore, by forming each of the members 34, 41, 42 from circular steel pipes, each of the members 34, 41, 42 can be easily formed into an approximate curved shape that matches the shape of the curved ceiling 12. Note that in FIG. 3, the curved portions of each of the members 34, 41, 42 are shown deformed into straight lines.

[0019] (action) When the above-mentioned ceiling support structure 20 is constructed, the ceiling material 15 is connected to the connecting materials 42. Specifically, one end of the ceiling material 15 is connected to one of the adjacent connecting materials 42, and the other end is connected to the other connecting material 42. The curved ceiling 12 is formed by sequentially connecting the ceiling materials 15 to the connecting materials 42.

[0020] The effects of this embodiment will be described. (1) The ceiling support structure 20 supports the curved ceiling 12 formed by multiple ceiling materials 15. The ceiling support structure 20 has a truss-type primary base 31 that supports the curved ceiling 12, and a secondary base 22 to which the primary base 31 is connected and which is connected to the structure on the upper floor and has vertical members 24 and horizontal members 25. This makes it possible to increase the rigidity of the secondary base 22 connected to the structure on the upper floor and the primary base 31 to which the ceiling material 15 is connected. As a result, the ceiling material 15 can be firmly attached to the structure on the upper floor while smoothly forming a curved ceiling surface.

[0021] (2) The vertical members 24 and horizontal members 25 are assembled in a stepped manner to match the shape of the curved ceiling 12. This makes it possible to form a highly rigid secondary base 22 that matches the shape of the ceiling surface of the curved ceiling 12.

[0022] (3) The lower chord 34 of the truss structure 32 is made of a circular steel pipe, which has excellent workability and precision in bending. This allows the lower chord 34 to be formed into an approximate curve that matches the shape of the curved ceiling 12.

[0023] (4) The primary foundation 31 has a ceiling material connecting portion 40 that is connected to the lower chord member 34 of the truss structural portion 32. The ceiling material connecting portion 40 is formed into a two-dimensional lattice structure in top view by connecting members 41 and connecting members 42. The connecting members 41 extend in the Y direction in which the truss structural portions 32 are arranged side by side, and are arranged side by side in the X direction. The connecting members 41 connect the lower chord members 34 of the truss structural portions 32. The connecting members 42 are connected to the connecting members 41. The connecting members 42 extend in the X direction and are arranged side by side in the Y direction between the truss structural portions 32. The ceiling material 15 is connected to the connecting members 42.

[0024] This allows the curved ceiling 12 to be formed using plate-like ceiling materials 15 with a length shorter than the installation interval of the truss structural parts 32. As a result, the curved surface can be expressed with a smaller plane, making it possible to achieve a smoother ceiling surface of the curved ceiling 12. Also, it is only necessary to install the truss structural parts 32, which have a more complex structure than the ceiling material connecting parts 40, in the necessary locations.

[0025] (5) The connecting members 41 and the connecting members 42 are formed from circular steel pipes. This allows the connecting members 41 and the connecting members 42 to be formed in an approximate curve that matches the shape of the curved ceiling 12. As a result, the accuracy of the installation position of the ceiling material 15 is improved, and the ceiling surface of the curved ceiling 12 can be made even smoother.

[0026] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. At least one of the connection members 41 and the connecting members 42 may be formed of a square steel pipe instead of a circular steel pipe.

[0027] The primary base 31 may be configured such that the ceiling material 15 is connected to the lower chord 34 of the truss structure section 32. In this configuration, the primary base 31 does not need to have the ceiling material connecting section 40.

[0028] The lower chord member 34 may be formed of a square steel pipe instead of a circular steel pipe. The secondary substructure 22 is not limited to being assembled in a stepped pattern using vertical members 24 and horizontal members 25 to match the shape of the curved ceiling 12, but may be assembled in a rectangular shape using vertical members 24 and horizontal members 25, for example.

[0029] Furthermore, the secondary base 22 is not limited to being formed into a three-dimensional lattice structure by vertical members 24 and horizontal members 25, but may be formed into a three-dimensional lattice structure by, for example, vertical members 24 and inclined members extending in a diagonal direction intersecting the X direction and the Z direction. [Explanation of symbols]

[0030] 10...building, 11...entrance, 12...curved ceiling, 15...ceiling material, 16...beam, 17...slab, 20...ceiling support structure, 22...secondary substructure, 23...hanging device, 24...vertical member, 25...horizontal member, 26...primary substructure connecting member, 27...brace member, 28...connecting fitting, 31...primary substructure, 32...truss structure part, 33...upper chord member, 34...lower chord member, 35...diagonal member, 36...connecting fitting, 40...ceiling material connection part, 41...connecting member, 42...connecting member.

Claims

1. A ceiling support structure for supporting a curved ceiling formed by a plurality of ceiling materials, A primary base having a truss structure section arranged in parallel according to the shape of the curved ceiling and supporting the curved ceiling; The truss structure portion is connected to the upper layer structure, and a secondary base is formed into a three-dimensional lattice structure. Ceiling support frame.

2. The secondary foundation is constructed in a stepped pattern using vertical and horizontal members to match the shape of the curved ceiling. The ceiling support structure according to claim 1.

3. The truss structure portion has an upper chord member connected to the secondary foundation, a lower chord member supporting the curved ceiling, and a diagonal member connecting the upper chord member and the lower chord member, The lower chord is formed of a circular steel pipe. The ceiling support structure according to claim 2.

4. The truss structure portion has an upper chord member connected to the secondary foundation, a lower chord member supporting the curved ceiling, and a diagonal member connecting the upper chord member and the lower chord member, The primary base has a ceiling material connection portion having a two-dimensional lattice structure when viewed from above, which is connected to the lower chord, The ceiling material connection portion is A connecting member that extends in an approximate curve that matches the shape of the curved ceiling and connects the lower chord member; A connecting material to which the ceiling material is connected, the connecting material extending in an approximate curved shape that matches the shape of the curved ceiling, connected to the connecting material, and arranged in parallel between the adjacent truss structure parts. A ceiling support structure according to any one of claims 1 to 3.

5. The connecting member and the linking member are formed of a circular steel pipe. The ceiling support structure according to claim 4.

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