Roof structure
The roof structure enhances sound insulation by employing multiple layers of sound-absorbing materials and air layers, addressing the inadequacies of existing structures in high-sound-volume venues, achieving improved performance and reduced weight.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- TODA CORP
- Filing Date
- 2022-03-18
- Publication Date
- 2026-06-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing roof structures fail to provide adequate sound insulation, particularly for venues hosting large events with high sound volumes, especially in low-frequency ranges.
A roof structure comprising multiple layers of beam sections, flat plate sections, and folded plate sections with sound-absorbing materials and air layers to enhance sound insulation, including H-shaped steel beams, corrugated sheet supports, and layers of glass wool and modified asphalt roofing.
Significantly improves sound insulation performance across all frequency bands, reduces roof weight, and maintains structural integrity without increasing weight, particularly effective in venues with large events.
Smart Images
Figure 0007872679000001 
Figure 0007872679000002
Abstract
Description
Technical Field
[0001] The present invention relates to a roof structure for preventing noise generated inside a building from leaking to the outside.
Background Art
[0002] Patent Document 1 discloses a soundproof roof structure in which a double-folded roof plate sandwiching a sound insulation and heat insulation material between upper and lower two folded plates is arranged on a roof base material, a cross member is fixed in parallel with the ridge via a mounting bracket on the double-folded roof material, a wood chip cement board is laid on the cross member, and a metal roof plate with tile-like covering is laid on this wood chip cement board to finish.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In an arena or the like where a concert or an event with a large volume of sound is held, higher sound insulation performance is required. An object of this invention is to solve such problems, for example.
Means for Solving the Problems
[0005] The roof structure has a plurality of beam portions, a first flat plate portion provided on the beam portions and supported by the beam portions, a plurality of first support portions provided on the beam portions and supported by the beam portions, a folded plate portion provided on the first flat plate portion and supported by the first support portions, a plurality of second support portions provided on the folded plate portion and supported by the folded plate portions, and a second flat plate portion provided on the folded plate portion and supported by the second support portions. The folded plate portion may be arranged separated from the first flat plate portion and the second flat plate portion. The first flat plate portion may have a perforated ceiling material. The second flat section may have modified asphalt roofing. The corrugated sheet portion may include a first corrugated sheet material, a second corrugated sheet material, and glass wool sandwiched between the first corrugated sheet material and the second corrugated sheet material. [Effects of the Invention]
[0006] According to the aforementioned roof structure, sound insulation performance can be significantly improved. [Brief explanation of the drawing]
[0007] [Figure 1] A side view cross-sectional diagram showing an example of a roof structure. [Figure 2] A graph showing the frequency characteristics of sound insulation performance. [Modes for carrying out the invention]
[0008] The roof structure 10 will be described with reference to Figure 1. The roof structure 10 is used when it is necessary to prevent noise generated inside the building from leaking to the outside. For example, in arenas, sound The venue sometimes hosts numerous concerts and events, and the resulting noise, primarily low-frequency, can be a problem. The roof structure 10 includes, for example, a beam section 12, a first flat plate section 13, a first support section 14, a folded plate section 15, a second support section 16, and a second flat plate section 17.
[0009] The beam section 12 is elongated, extending in the ±Y direction (horizontal direction on the drawing), and multiple beam sections are provided parallel to each other in the ±X direction (direction perpendicular to the plane of the drawing). The beam section 12 includes, for example, an H-shaped steel beam 21 and a corrugated sheet metal support 22. The H-shaped steel beam 21 is part of the building's frame and supports the weight of the roof structure 10. The corrugated plate support 22 is installed on the H-shaped steel 21, along the H-shaped steel 21, and is supported by the H-shaped steel 21 to support the first flat plate portion 13 and the first support portion 14. The corrugated plate support 22 is, for example, a roughly rectangular cylindrical shape formed by bending a steel plate with a thickness of 3.2 mm.
[0010] The first flat plate section 13 is a flat plate that is substantially perpendicular to the ±Z direction (vertical direction in the drawing), and is provided on and supported by the beam section 12. The first flat plate section 13 includes, for example, a ceiling material 31 and a sound-absorbing panel 32. The ceiling material 31 is made of, for example, 0.6 mm thick galvalume steel sheet (registered trademark) and has circular punching holes with a diameter of 8 mm at 10 mm intervals. This absorbs sound generated in the room. The sound-absorbing panel 32 is, for example, a glass wool board with a thickness of 50 mm, and is placed on top of the ceiling material 31.
[0011] The first support section 14 is, for example, a tight frame made of galvanized steel sheet and is provided on the beam section 12. Multiple first support sections 14 are arranged spaced apart in the ±Y direction for each beam section 12.
[0012] The folded plate section 15 has peaks and valleys parallel to the ±X direction, is placed on the first flat plate section 13, and is supported by the first support section 14 at a distance from the first flat plate section 13. The distance between the first flat plate section 13 and the folded plate section 15 is, for example, 25 mm at the closest point and 228 mm at the furthest point, and by providing an air layer between the first flat plate section 13 and the folded plate section 15, sound insulation performance is improved. The folded plate section 15 includes, for example, a first folded plate material 51, a second folded plate material 52, and a sound-absorbing material 53. The first corrugated sheet material 51 is made of, for example, 0.6 mm thick galvalume steel sheet (registered trademark), and is fitted to the tip of the first support part 14 and supported by the first support part 14. The second corrugated sheet metal 52 is made of, for example, galvalume steel sheet (registered trademark) with a thickness of 0.8 mm, and is placed on the first corrugated sheet metal 51 at a predetermined interval (for example, 100 mm). The sound-absorbing material 53 is, for example, a double-layered glass wool with a thickness of 50 mm and is sandwiched between the first folded plate member 51 and the second folded plate member 52. This improves the sound insulation performance.
[0013] The second support portion 16 is provided on the folded plate portion 15 and is supported by the folded plate portion 15 to support the second flat plate portion 17. The second support portion 16 has, for example, a mounting fitting 61 and a receiving base 62. The mounting fitting 61 is, for example, an extruded molding made of aluminum, fits into the peak portion of the second folded plate member 52, and is supported by the folded plate portion 15. A plurality of second support portions 16 are arranged at intervals in the ±X direction with respect to one peak portion of the second folded plate member 52. The receiving base 62 is, for example, made of a galvanized steel sheet, is in a long shape extending in the ±Y direction, is supported by the mounting fitting 61, and supports the second flat plate portion 17.
[0014] The second flat plate portion 17 is in a flat plate shape substantially perpendicular to the ±Z direction, is provided on the folded plate portion 15, and is supported by the second support portion 16 so as to be spaced apart from the folded plate portion 15. The distance between the folded plate portion 15 and the second flat plate portion 17 is, for example, 50 mm at the closest point and 253 mm at the farthest point. By providing an air layer between the folded plate portion 15 and the second flat plate portion 17, the sound insulation performance is improved. The second flat plate portion 17 has, for example, a hard wood chip cement board 71, a modified asphalt roofing 72, a fluorine gallium steel plate 73, and a hanger 74. The hard wood chip cement board 71 is, for example, a double-layered hard wood chip cement board with a thickness of 25 mm, is provided on the second support portion 16, and is fixed to the receiving base 62. The modified asphalt roofing 72 has, for example, a thickness of 1 mm and is provided on the hard wood chip cement board 71. This improves the sound insulation performance. The fluorine gallium steel plate 73 has, for example, a thickness of 0.5 mm, and a 4-mm thick foamed polyethylene is attached to the back side. The fluorine gallium steel plate 73 is provided on the modified asphalt roofing 72. The hanger 74 integrally fixes the hard wood chip cement board 71, the modified asphalt roofing 72, and the fluorine gallium steel plate 73.
[0015] Referring to FIG. 2, the sound insulation performance of the roof structure 10 will be described. The roof structure 10 was reproduced vertically between the reverberation chamber and the anechoic chamber, and the frequency characteristics 81 of the sound transmission loss were measured by a measurement method compliant with Japanese Industrial Standard (JIS) A1441-1:2007 "Acoustics - Measurement method for air sound insulation performance of buildings and building components by the sound intensity method - Part 1: Measurement in laboratories". From this experimental result, it was found that the sound insulation performance of the roof structure 10 was significantly improved.
[0016] The roof structure 10 is lightweight and has excellent sound insulation performance in the low - frequency range. Compared with the case of using ALC, a significant weight reduction can be achieved. For example, when using ALC, the surface density is, for example, 119.91 kg / m
[0018] , , , , [[ID=^14]]whereas the roof structure 10 can suppress the surface density to, for example, 80.18 kg / m 2
[0017] In an arena, since large - capacity concerts and events are held, in order to prevent noise, a roof specification with improved sound insulation performance is required. In particular, it is necessary to prevent low - frequency noise. By multi - layerizing the folded plates, the weight is reduced and the sound insulation performance is improved, so there is no need to increase the weight of the roof. By using the upper chord member + double folded plates, the weight of the roof can be reduced without degrading the sound insulation performance. As a result, the sound insulation performance is improved in all frequency bands. The underlying steel frame becomes single, and the roof weight can be significantly reduced.
[0018] The embodiments described above are examples intended to facilitate understanding of the present invention. The present invention is not limited thereto and includes various modifications, changes, additions, or deletions without departing from the scope defined by the appended claims. This will be readily apparent to those skilled in the art from the above description. [Explanation of symbols]
[0019] 10 Roof structure, 12 Beam section, 21 H-shaped steel, 22 Corrugated sheet support, 13 First flat sheet section, 31 Ceiling material, 32 Sound-absorbing panel, 14 First support section, 15 Corrugated sheet section, 51 First corrugated sheet material, 52 Second corrugated sheet material, 53 Sound-absorbing material, 16 Second support section, 61 Mounting bracket, 62 Support base, 17 Second flat sheet section, 71 Hard wood chip cement board, 72 Modified asphalt roofing, 73 Fluorine galvalume steel sheet. 74 Hanger, 81 Frequency characteristics.
Claims
1. Multiple beam sections, A first flat plate portion provided on the beam portion, A first support portion provided on the beam portion, A folded plate portion is positioned above the first flat plate portion with an air layer in between, and is supported by the first support portion, A second support portion is provided on the aforementioned corrugated plate portion, A second flat plate portion is positioned above the corrugated plate portion with an air layer in between, and is supported by the second support portion, Equipped with, The first flat plate portion is, A ceiling material provided on the aforementioned beam section, A sound-absorbing panel is provided on the ceiling material and faces the folded plate portion with an air layer in between, Equipped with, The second flat plate portion comprises a hard wood chip cement board provided on the second support portion, modified asphalt roofing provided on the hard wood chip cement board, and a fluorocarbon galvalume steel plate provided on the modified asphalt roofing. The aforementioned beam section is H-shaped steel, which is part of the building's structure, On the aforementioned H-shaped steel, a corrugated sheet support is provided along the H-shaped steel, supported by the H-shaped steel, and supporting the ceiling material and the first support portion. Equipped with, The corrugated plate support has a flat surface that faces the first flat plate portion and to which the first support portion is connected. Roof structure.
2. The corrugated sheet support has a substantially rectangular cylindrical cross-section. The roof structure according to claim 1.
3. The second flat plate portion has hangers that penetrate the hard wood chip cement board, the modified asphalt roofing, and the fluorine galvalume steel plate in the thickness direction and fix them integrally. The roof structure according to claim 1 or 2.
4. The corrugated sheet portion comprises a first corrugated sheet material, a second corrugated sheet material, and glass wool sandwiched between the first corrugated sheet material and the second corrugated sheet material. The second support portion is, A mounting bracket fitted into the ridge portion of the second corrugated sheet material and supported by the corrugated sheet portion, It has a support base made of galvanized steel plate that is supported by the aforementioned mounting bracket and supports the hard wood chip cement board, The roof structure according to any one of claims 1 to 3.