Ceiling substructure

Abstract

To provide a simple ceiling base structure that can be constructed at low cost.SOLUTION: Provided is a structure 10 that constitutes the base of a ceiling: including a beam member 12 having a web 20 and a flange 24 provided on the lower side of the web 20; a first support member 14 fixed to one side of the web 20 with a first bolt 38 and having a face material 30 facing in the beam axis direction below the flange 24; a second support member 16 fixed to the other surface of the web 20 with the first bolt 38 and having a face material 46 disposed to face the face material 30 of the first support member 14 below the flange 24; a ceiling support material 18 provided to support the ceiling material and disposed opposite to the face materials 30 and 46; and a second bolt 60 connecting the face materials 30 and 46 and the ceiling support material 18.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a ceiling base structure.

Background Art

[0002] Conventionally, a ceiling base structure in which a soffit or the like is suspended and supported by a beam or the like inside the ceiling of a building is known (see, for example, Patent Documents 1 to 3).

[0003] Patent Document 1 provides a bending column extending downward from a steel section detachably attached to the lower flange of a steel frame beam, and attaches a ceiling material support structure member to this bending column, and the ceiling material support structure member is supported by the steel frame beam via the steel section and the bending column.

[0004] Patent Document 2 attaches a plurality of suspension members to a framework, suspends a spring plate assembly at the lower end of each suspension member, and arranges a vibration damper brace in an X shape between the fixed part of this spring plate assembly and an adjacent suspension member, and attaches a ceiling member to the movable part of the spring plate assembly with a bolt member.

[0005] Patent Document 3 combines a soffit and a soffit receiver in a lattice pattern, and forms a ceiling frame by integrally connecting the intersecting portions above and below the soffit and the soffit receiver with a predetermined connecting fitting. The soffit receiver of this ceiling frame is connected to the lower end of a suspension bolt via a suspension fitting and suspended from a building structure, and a brace member is provided between the upper end of the suspension bolt and the ceiling frame. Further, a reinforcing steel pipe made of a square steel pipe with a large plate thickness is provided on the side of the brace member connecting portion on the ceiling frame side, and the lower end of the brace member is connected to this reinforcing steel pipe.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

[0007] However, the structures described in the above-mentioned conventional patent documents 1 to 3 are complex and large in scale, resulting in problems with construction time and cost. Therefore, there has been a need for a simpler structure that is less expensive.

[0008] The present invention has been made in view of the above, and aims to provide a simple ceiling base structure that can be constructed at low cost. [Means for solving the problem]

[0009] To solve the above-mentioned problems and achieve the objective, the ceiling base structure according to the present invention is a structure that constitutes a ceiling base, comprising: a beam member having a web and a flange provided on the lower side of the web; a first support member fixed to one side of the web by a first bolt and having a surface material facing in the direction of the beam axis on the lower side of the flange; a second support member fixed to the other side of the web by a first bolt and having a surface material positioned opposite to the surface material of the first support member on the lower side of the flange; a ceiling support member provided for supporting a ceiling material and positioned opposite to the surface material of the first support member or the second support member; and a second bolt connecting the surface material of the first support member, the surface material of the second support member, and the ceiling support member.

[0010] Furthermore, another ceiling substrate structure according to the present invention is characterized in that, in the above-described invention, the first support member and the second support member are fixed to each other via a first bolt that penetrates the web.

[0011] Furthermore, another ceiling base structure according to the present invention is characterized in that, in the above-described invention, the first support member, the second support member, and the web are fixed to each other by two or more first bolts, and the surface material of the first support member, the surface material of the second support member, and the ceiling support member are fixed to each other by four or more second bolts. [Effects of the Invention]

[0012] The ceiling substrate structure according to the present invention provides a simple ceiling substrate structure that can be constructed at low cost, comprising: a beam member having a web and a flange provided on the lower side of the web; a first support member fixed to one side of the web by a first bolt and having a surface material facing in the direction of the beam axis on the lower side of the flange; a second support member fixed to the other side of the web by a first bolt and having a surface material positioned opposite to the surface material of the first support member on the lower side of the flange; a ceiling support member provided to support the ceiling material and positioned opposite to the surface material of the first support member or the second support member; and a second bolt connecting the surface material of the first support member, the surface material of the second support member, and the ceiling support member.

[0013] Furthermore, according to another ceiling substrate structure of the present invention, the first support member and the second support member are fixed to each other via a first bolt that penetrates the web, which has the effect of reducing the number of bolts and the amount of work required.

[0014] Furthermore, according to another ceiling substrate structure of the present invention, the first support member, the second support member, and the web are fixed to each other by two or more first bolts, and the surface material of the first support member, the surface material of the second support member, and the ceiling support member are fixed to each other by four or more second bolts, thereby improving structural strength and providing the effect of stably supporting the ceiling material. [Brief explanation of the drawing]

[0015] [Figure 1]Figure 1 is a side cross-sectional view showing an embodiment of the ceiling substrate structure according to the present invention. [Figure 2] Figure 2 is a cross-sectional view along line AA in Figure 1. [Modes for carrying out the invention]

[0016] The following describes in detail an embodiment of the ceiling substrate structure according to the present invention with reference to the drawings. However, this embodiment does not limit the present invention.

[0017] As shown in Figures 1 and 2, the ceiling base structure 10 according to an embodiment of the present invention comprises a steel beam 12 (beam member), a first support member 14, a second support member 16, and a ceiling support member 18.

[0018] The steel beam 12 is made of an H-shaped steel with the horizontal direction being the beam axis X, and has a web 20, an upper flange 22, and a lower flange 24. Multiple steel beams 12 are arranged horizontally at intervals within the ceiling of the building. The steel beams 12 may utilize existing beams installed in the ceiling, or new beams may be installed. Utilizing existing beams can reduce construction costs. Horizontal braces and the like may be connected to the steel beams 12.

[0019] The first support member 14 is made of a roughly J-shaped steel plate having a U-shaped transverse groove 26 that opens to the side when viewed from the front, and has an upper plate 28 positioned above the transverse groove 26, a lower plate 30 (face material) positioned below it, and a fixing piece 32 welded to the side edge of the upper plate 28. The normal direction of the upper plate 28 and the lower plate 30 coincides with the beam axis direction X. The fixing piece 32 protrudes from both sides in the normal direction of the upper plate 28. Each fixing piece 32 is provided with a through hole 34 for a bolt. On the other hand, the web 20 of the steel beam 12 is provided with two through holes 36 spaced apart in the beam axis direction X, corresponding to the through holes 34. The fixing piece 32 is positioned in contact with one side of the web 20 and is fixed to the web 20 with first bolts 38 inserted through the respective through holes 34 and 36.

[0020] The transverse groove 26 is arranged so as to sandwich one side of the lower flange 24 from above and below. Also, the lower edge of the upper plate 28 is arranged along the upper surface of one side of the lower flange 24. The lower edge of the upper plate 28 and the upper edge of the lower plate 30 are connected in the vertical direction at the inner end of the transverse groove 26. The inner end of the transverse groove 2 will be 6 is arranged with a slight gap from the small end surface of one side of the lower flange 24. The upper edge of the lower plate 30 is arranged with a slight gap from the lower surface of one side of the lower flange 24. The lower plate 30 extends across directly below the web 20 on the lower side of the lower flange 24 to the other side of the lower flange 24. Four through holes 40 are provided in the lower plate 30 at intervals in the extending direction.

[0021] The second support member 16 has a structure that is substantially symmetrical to the left and right with the first support member 14. That is, the second support member 16 is composed of a substantially J-shaped steel plate having a U-shaped transverse groove 42 that opens to the side in a front view, and includes an upper plate 44 arranged above the transverse groove 42, a lower plate 46 (face material) arranged below, and a fixing piece 48 welded to the side edge of the upper plate 44. The normal directions of the upper plate 44 and the lower plate 46 coincide with the beam axis direction X. The fixing piece 48 projects out on both sides in the normal direction of the upper plate 44, and through holes 50 for bolts are provided respectively. On the other hand, two through holes 36 are provided in the web 20 of the steel frame beam 12 at intervals in the beam axis direction X corresponding to the through holes 50. The fixing piece 48 is arranged to abut against the other surface of the web 20 and is fixed to the web 20 by first bolts 38 inserted through the respective through holes 50 and 36. In the present embodiment, the fixing piece 48 of the second support member 16, the web and the fixing piece 3 of the first support member 14 are fixed by two common first bolts 38 and nuts 52. Thereby, the number of bolts and the number of construction operations can be reduced.

[0022] The transverse groove 42 is arranged so as to sandwich the other side of the lower flange 24 from above and below. Further, the lower edge of the upper plate 44 is arranged along the upper surface of the other side of the lower flange 24. The lower edge of the upper plate 44 and the upper edge of the lower plate 46 are connected in the vertical direction at the inner end of the transverse groove 42. The inner end of the transverse groove 42 is arranged with a slight gap from the end face of the other side of the lower flange 24. The upper edge of the lower plate 46 is arranged with a slight gap from the lower surface of the other side of the lower flange 24. The lower plate 46 extends to one side of the lower flange 24 across directly below the web 20 on the lower side of the lower flange 24. Four through holes 54 are provided in the lower plate 46 at intervals in the extending direction.

[0023] The ceiling support member 18 is a field edge provided for supporting a ceiling member such as a ceiling panel not shown. This ceiling support member 18 is made of a channel steel with a substantially U-shaped cross section and is arranged at intervals left and right directly below the web 20 of the steel frame beam 12. Note that the ceiling support member 18 may be continuous in the left-right direction without being separated left and right directly below the web 20. The web 56 of the ceiling support member 18 is arranged to abut against the lower plate 46. Two through holes 58 are provided at intervals in the extending direction on the end side of each web 56 of the ceiling support member 18. The webs 56 of the lower plates 30, 46 and the ceiling support member 18 are connected by second bolts 60 inserted through the through holes 58 and nuts 62. It is preferable that there are four second bolts 60, two for each ceiling support member 18, in order to achieve both an improvement in structural strength and a simplification of the structure.

[0024] According to the above configuration, the ceiling material is suspended from the first support member 14 and the second support member 16 via the ceiling support member 18. As a result, the first support member 14 and the second support member 16 are subjected to a vertically downward force and bending stress. This stress is dealt with by the long-term shear force exerted by the first bolt 38 and the second bolt 60. The vertical force generated in the first support member 14 and the second support member 16 is directly transmitted to the lower flange 24 because the upper plates 28 and 44 are in contact with the lower flange 24. It can also be transmitted to the web 20 because the fixing pieces 32 and 48 are in contact with the web 20. The horizontal force is directly transmitted to the web 20 because it is in contact with the web 20. This allows the ceiling material to be stably supported.

[0025] According to this embodiment, the simple configuration comprising a steel beam 12, a first support member 14, a second support member 16, and a ceiling support member 18 allows for low-cost construction. Furthermore, since the steel beam 12, the first support member 14, and the second support member 16 are fixed with two first bolts 38, and the lower plates 30 and 46 and the ceiling support member 18 are fixed with four second bolts 60, structural strength is ensured while stably supporting the ceiling material.

[0026] In the above embodiment, for example, H-390×300×10×16 may be used as the steel beam 12. Also, for example, medium bolts (400N / mm) may be used as the first bolt 38 and the second bolt 60. 2You may use grades such as M12. Alternatively, you may set the vertical height of the first support member 14 and the second support member 16 to about 200 mm, the horizontal length of the lower plates 30 and 46 to about 320 mm, and the gap between the end face of the lower flange 24 and the far end of the horizontal grooves 26 and 42, and the gap between the bottom surface of the lower flange 24 and the upper edge of the lower plates 30 and 46 to about 5 mm. For the material used for the first support member 14 and the second support member 16, for example, SS400 can be used. In this case, it is preferable to set the thickness to 6 mm or more and the plate width at the position of the horizontal grooves 26 and 42 (horizontal width from the far end to the outer edge of the horizontal grooves 26 and 42) to about 50 mm or more in order to improve structural strength and simplify the structure.

[0027] In the above embodiment, the first support member 14, the second support member 16, and the web 20 were described using two first bolts 38 as an example, but the present invention is not limited to this, and may be fixed with two or more first bolts 38. In this way, the structural strength can be further increased. Also, the lower plates 30, 46 and the ceiling support member 18 were described using four second bolts 60 as an example, but the present invention is not limited to this, and may be fixed with four or more first bolts 60. In this way, the structural strength can be further increased.

[0028] As described above, the ceiling base structure according to the present invention provides a simple ceiling base structure that can be constructed at low cost, comprising: a beam member having a web and a flange provided on the lower side of the web; a first support member fixed to one side of the web by a first bolt and having a surface material facing in the direction of the beam axis on the lower side of the flange; a second support member fixed to the other side of the web by a first bolt and having a surface material positioned opposite to the surface material of the first support member on the lower side of the flange; a ceiling support member provided to support the ceiling material and positioned opposite to the surface material of the first support member or the second support member; and a second bolt connecting the surface material of the first support member, the surface material of the second support member, and the ceiling support member.

[0029] Furthermore, according to another ceiling substrate structure of the present invention, the first support member and the second support member are fixed to each other via a first bolt that penetrates the web, thus reducing the number of bolts and the amount of work required.

[0030] Furthermore, according to another ceiling substrate structure of the present invention, the first support member, the second support member, and the web are fixed to each other by two or more first bolts, and the surface material of the first support member, the surface material of the second support member, and the ceiling support member are fixed to each other by four or more second bolts, thereby improving structural strength and enabling stable support of the ceiling material. [Industrial applicability]

[0031] As described above, the ceiling substrate structure according to the present invention is useful for structures in which joists are suspended and supported from beams within the ceiling of a building, and is particularly suitable for low-cost construction. [Explanation of Symbols]

[0032] 10 Ceiling substructure 12. Steel beam (beam member) 14 First support member 16 Second support member 18 Ceiling support material 20,56 Web 22 Upper flange 24 Lower flange (flange) 26,42 Yokomizo 28,44 Top plate 30,46 Lower plate (surface material) 32,48 Fixed piece 34, 36, 40, 50, 54, 58 Through holes 38 First bolt 52,62 nuts 60 Second bolt X Beam axis direction

Claims

1. A structure that forms the base of the ceiling, A ceiling base structure characterized by comprising: a beam member having a web and a flange provided on the lower side of the web; a first support member fixed to one side of the web by a first bolt and having a surface material facing in the direction of the beam axis on the lower side of the flange; a second support member fixed to the other side of the web by a first bolt and having a surface material positioned opposite to the surface material of the first support member on the lower side of the flange; a ceiling support member provided for supporting a ceiling material and positioned opposite to the surface material of the first support member or the second support member; and a second bolt connecting the surface material of the first support member, the surface material of the second support member, and the ceiling support member.

2. The ceiling base structure according to claim 1, characterized in that the first support member and the second support member are fixed to each other via a first bolt that penetrates the web.

3. The ceiling base structure according to claim 1 or 2, characterized in that the first support member, the second support member, and the web are fixed to each other by two or more first bolts, and the surface material of the first support member, the surface material of the second support member, and the ceiling support member are fixed to each other by four or more second bolts.

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