CA2360565A1 - Flooring structure - Google Patents
Flooring structure Download PDFInfo
- Publication number
- CA2360565A1 CA2360565A1 CA002360565A CA2360565A CA2360565A1 CA 2360565 A1 CA2360565 A1 CA 2360565A1 CA 002360565 A CA002360565 A CA 002360565A CA 2360565 A CA2360565 A CA 2360565A CA 2360565 A1 CA2360565 A1 CA 2360565A1
- Authority
- CA
- Canada
- Prior art keywords
- beams
- flooring structure
- flooring
- grooves
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000009408 flooring Methods 0.000 title claims abstract description 65
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 9
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 206010024769 Local reaction Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Floor Finish (AREA)
- Building Environments (AREA)
- Body Structure For Vehicles (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The present invention relates to a flooring structure in which the beams (1, 8) of the flooring structure are not interconnected with one another apart from in certain discrete points, for example in bearing supports. In this instance, the bearing beams (1, 8) of the flooring structure do not dynamically co-operate with one another in any significant manner. As a result, improved footstep sound insulation will be obtained since the floori ng structure only reacts locally to a dynamic loading. The flooring structure emits only sound in an area close to the applied dynamic loading. In the flooring structure according to the present invention, the beams (1, 8) lie considerably closer to one another compared with that which has previously been normal for light wooden flooring structures. In one embodiment of the present invention, the beams (8) and/or studs (10) placed between the beams (1, 8) and floor panels (5) are provided with grooves (9). As a result of these grooves (9) torsional and compression rigidity at the anchorage points with the floor are reduced, which gives improved footstep sound insulation compared with beams and/or studs without grooves.
Description
FLOORING STRUCTURE
The present invention relates to a flooring structure having improved footstep sound insulation.
The acoustic properties in a building are often described as footstep sound, airflow sound and structural sound. Footstep sound is defined as sound which occurs in adjacent enclosures as a result of footsteps on flooring structures, in stairways etc. Airflow sound is defined as the sound emitted from the sound source into the ambient atmosphere by the air. Finally, structural sound is defined as sound which is propagated via the structure of a building.
In order to avoid irritation, it is desirable to restrict the sonic transfer between different spaces or enclosures in a building as far as is practically possible. The present invention specifically relates to footstep sound insulation, i.e. to reduce, on dynamic loading, the transfer of sound between two storeys and/or apartments. The term dy-namic loading relates to that type of loading which occurs as a result of footsteps on a floor.
In addition to the bearing wooden beams, a traditional flooring struc-ture consists further of a floor and a ceiling. In the actual flooring structure and between floor, ceiling and flooring structure, respec-tively, there are normally various types of insulating material. There may also be provided battens for supporting any possible insulation between the beams and false ceiling panels. At their ends, the bearing wooden beams are secured in the structure of the building.
The principle of today's homogenous flooring structures entails that the individual wooden beams are united via steel bands, nails or glue.
Traditional light flooring structures are normally interconnected by the intermediary of various types of panels on the upper and lower sides. This implies that the flooring structure oscillates as an equivalent, orthotropic, homogeneous plate in the event of a dynamic loading such as a footstep. This in turn implies that the entire sur-face of the flooring structure emits sound out towards adjacent areas.
In prior art flooring structures, there is a large number of different strata or layers. In the present invention, the same or improved sound insulation will be obtained with a fewer number of layers. This affords obvious advantages both as regards material costs and material consump-tion.
If a homogenous flooring structure is employed, it is moreover possible to use it as a "floor" during building work.
One object of the present invention is to reduce the footstep sound, i.e. to reduce the drawbacks inherent in traditional flooring struc-tures as described above in the event of dynamic loading. Naturally, the flooring structure must satisfy the usual requirements as regards mechanical strength, structural sound insulation and airflow sound in-sulation, fire safety etc.
The footstep sound damping effect is obtained according to the present invention in that the flooring structure only reacts locally to a dy-namic loading, which entails that the flooring structure only emits sound immediately adjacent the applied dynamic loading.
In a flooring structure according to the present invention, the bearing wooden beams are not dynamically interconnected.
The present invention will now be described in greater detail hereinbe-low, with reference to the accompanying Drawings. In the accompanying Drawings:
Fig. 1 shows the principle of a homogeneous wooden flooring structure with steel band according to prior art technology;
Fig. 2 is a cross section of a traditional light wooden flooring structure according to prior art technology;
The present invention relates to a flooring structure having improved footstep sound insulation.
The acoustic properties in a building are often described as footstep sound, airflow sound and structural sound. Footstep sound is defined as sound which occurs in adjacent enclosures as a result of footsteps on flooring structures, in stairways etc. Airflow sound is defined as the sound emitted from the sound source into the ambient atmosphere by the air. Finally, structural sound is defined as sound which is propagated via the structure of a building.
In order to avoid irritation, it is desirable to restrict the sonic transfer between different spaces or enclosures in a building as far as is practically possible. The present invention specifically relates to footstep sound insulation, i.e. to reduce, on dynamic loading, the transfer of sound between two storeys and/or apartments. The term dy-namic loading relates to that type of loading which occurs as a result of footsteps on a floor.
In addition to the bearing wooden beams, a traditional flooring struc-ture consists further of a floor and a ceiling. In the actual flooring structure and between floor, ceiling and flooring structure, respec-tively, there are normally various types of insulating material. There may also be provided battens for supporting any possible insulation between the beams and false ceiling panels. At their ends, the bearing wooden beams are secured in the structure of the building.
The principle of today's homogenous flooring structures entails that the individual wooden beams are united via steel bands, nails or glue.
Traditional light flooring structures are normally interconnected by the intermediary of various types of panels on the upper and lower sides. This implies that the flooring structure oscillates as an equivalent, orthotropic, homogeneous plate in the event of a dynamic loading such as a footstep. This in turn implies that the entire sur-face of the flooring structure emits sound out towards adjacent areas.
In prior art flooring structures, there is a large number of different strata or layers. In the present invention, the same or improved sound insulation will be obtained with a fewer number of layers. This affords obvious advantages both as regards material costs and material consump-tion.
If a homogenous flooring structure is employed, it is moreover possible to use it as a "floor" during building work.
One object of the present invention is to reduce the footstep sound, i.e. to reduce the drawbacks inherent in traditional flooring struc-tures as described above in the event of dynamic loading. Naturally, the flooring structure must satisfy the usual requirements as regards mechanical strength, structural sound insulation and airflow sound in-sulation, fire safety etc.
The footstep sound damping effect is obtained according to the present invention in that the flooring structure only reacts locally to a dy-namic loading, which entails that the flooring structure only emits sound immediately adjacent the applied dynamic loading.
In a flooring structure according to the present invention, the bearing wooden beams are not dynamically interconnected.
The present invention will now be described in greater detail hereinbe-low, with reference to the accompanying Drawings. In the accompanying Drawings:
Fig. 1 shows the principle of a homogeneous wooden flooring structure with steel band according to prior art technology;
Fig. 2 is a cross section of a traditional light wooden flooring structure according to prior art technology;
Fig. 3 shows the principle of a homogeneous wooden flooring structure according to the present invention;
Fig. 4 shows the principle of a semi-homogeneous wooden flooring structure according to the present invention;
Fig. 5 is a perspective view of a grooved beam which may be employed in the present invention; and Fig. 6 is a schematic cross section of an alternative flooring struc-ture according to the present invention.
The figures show substantially only the beams, the floor structure, in-cluded in the flooring, but a person skilled in the art will readily perceive that the flooring structure also includes floor, ceiling and various insulating layers.
Today, basically only two types of wooden flooring structures are em-ployed, namely a homogeneous wooden flooring structure as in Fig. 1, or a so-called light wooden flooring structure as in Fig. 2.
The homogeneous wooden flooring structure according to Fig. 1 has a number of closely adjacent wooden beams 1 which are united together, for example, by means of two steel bands intimated at reference numeral 2 in Fig. 2. This is a relatively rigid construction. When such a rigid construction is subjected to a dynamic loading 3, such as a footstep, it oscillates as an orthotropic, homogeneous plate. This entails that the whole surface of the flooring structure emits sound to adjacent ar-eas, as intimated by the sketched sound waves 4.
In the normal construction of a light wooden flooring structure as in-timated in Fig. 2, the beams 1 are interconnected with the aid of floor panels 5 and ceiling panels 6. Also, in such a flooring structure, the individual beams co-operate via the panels so that footstep sound 4 is transferred from its entire surface towards adjacent areas.
Fig. 4 shows the principle of a semi-homogeneous wooden flooring structure according to the present invention;
Fig. 5 is a perspective view of a grooved beam which may be employed in the present invention; and Fig. 6 is a schematic cross section of an alternative flooring struc-ture according to the present invention.
The figures show substantially only the beams, the floor structure, in-cluded in the flooring, but a person skilled in the art will readily perceive that the flooring structure also includes floor, ceiling and various insulating layers.
Today, basically only two types of wooden flooring structures are em-ployed, namely a homogeneous wooden flooring structure as in Fig. 1, or a so-called light wooden flooring structure as in Fig. 2.
The homogeneous wooden flooring structure according to Fig. 1 has a number of closely adjacent wooden beams 1 which are united together, for example, by means of two steel bands intimated at reference numeral 2 in Fig. 2. This is a relatively rigid construction. When such a rigid construction is subjected to a dynamic loading 3, such as a footstep, it oscillates as an orthotropic, homogeneous plate. This entails that the whole surface of the flooring structure emits sound to adjacent ar-eas, as intimated by the sketched sound waves 4.
In the normal construction of a light wooden flooring structure as in-timated in Fig. 2, the beams 1 are interconnected with the aid of floor panels 5 and ceiling panels 6. Also, in such a flooring structure, the individual beams co-operate via the panels so that footstep sound 4 is transferred from its entire surface towards adjacent areas.
In a homogeneous flooring structure according to the present invention as illustrated in Fig. 3, the individual beams 1 are not dynamically joined together. The ends of the beams are secured in the structure of the building. The present invention is based on the feature that the bearing beams 1 of the flooring structure do not co-operate dynamically with one another in any significant manner.
In all embodiments, according to the present invention, the beams 1 are not interconnected with each other apart from at certain discrete points, for example bearing supports at the ends of the beams.
Compared with prior art light flooring structures, the beams 1 in the flooring structure according to the present invention lie considerably closer to one another. A suitable rule of thumb in such instance has proved to be that the distance between the beams 1 should be less than the height of an individual beam 1.
When a dynamic loading 3 is applied on a flooring structure according to the present invention, only the beam or beams 1 which lie directly beneath the point of impact of the loading will be affected. The trans-fer of movement to adjacent beams is minimized. In such instance, the footstep sound 4 is only transferred via these directly affected beams.
The flooring structure may be said to react locally in that it only emits sound immediately adjacent the applied dynamic loading 3.
As intimated in Fig. 4, the loca l reaction principle according to the present invention also applies to semi-homogeneous flooring structures without interconnected beams 1. In such instance, the beams 1 lie a distance from each other and insulation 7 has been placed between the beams 1. This insulation 7 must have low shearing rigidity. If the in-sulation has too high shearing rigidity, there is a risk that the vi-brations are transferred between the beams 1. An example of suitable insulation material is mineral wool of low shearing rigidity. Also in this case, the flooring structure reacts only locally to a dynamic loading 3.
In one alternative embodiment of the present invention, the local reac-tion to a dynamic loading is attained in that the flooring beams in the flooring structure under consideration are provided with grooves which reduce torsional rigidity and compression rigidity at the anchorage 5 point to the floor and/or ceiling panels. The same effect is achieved with separate, grooved studs in accordance with the foregoing which are mounted on the upper and/or lower side of the flooring structure.
In this embodiment, use is made either of beams 8 or studs 10 which have been provided with grooves 9. In such instance, the grooves 9 are made in a manner illustrated in Swedish patent No. 510 722. The grooves 9 in beams 8 or studs 10, respectively, are fully open in one direction and have through-going defined apertures 11 in the other direction.
Each cross section displays at least one part without any material, i.e. at least one of the grooves 9 has no residual material in that cross section.
When grooved beams according to Fig. 5 are employed, the floor may rest direct on the beams. In the embodiment according to Fig. 6, grooved studs 10 are placed between the beams 1,8 and the floor panels 5. In this latter embodiment, both beams 1,8 with and without grooves may be employed.
As a ceiling, it may be of interest to employ wood wool panels. Wood wool panels absorb sound efficiently and transmit little sound compared with, for example, a plaster board.
The form of the flooring structure may be varied in many different ways without deviating from the inventive concept as herein disclosed. How-ever, it is always important to ensure that, when one or more adjacent beams 1 are subjected to a dynamic loading, the transfer of the loading movement of the beam/beams to other beams in the flooring structure is minimized.
While the present invention shows and is described in connection with wooden flooring structures, a person skilled in the art will perceive that the same principle may be employed for flooring structures of other materials, such as, for example, concrete and steel.
In all embodiments, according to the present invention, the beams 1 are not interconnected with each other apart from at certain discrete points, for example bearing supports at the ends of the beams.
Compared with prior art light flooring structures, the beams 1 in the flooring structure according to the present invention lie considerably closer to one another. A suitable rule of thumb in such instance has proved to be that the distance between the beams 1 should be less than the height of an individual beam 1.
When a dynamic loading 3 is applied on a flooring structure according to the present invention, only the beam or beams 1 which lie directly beneath the point of impact of the loading will be affected. The trans-fer of movement to adjacent beams is minimized. In such instance, the footstep sound 4 is only transferred via these directly affected beams.
The flooring structure may be said to react locally in that it only emits sound immediately adjacent the applied dynamic loading 3.
As intimated in Fig. 4, the loca l reaction principle according to the present invention also applies to semi-homogeneous flooring structures without interconnected beams 1. In such instance, the beams 1 lie a distance from each other and insulation 7 has been placed between the beams 1. This insulation 7 must have low shearing rigidity. If the in-sulation has too high shearing rigidity, there is a risk that the vi-brations are transferred between the beams 1. An example of suitable insulation material is mineral wool of low shearing rigidity. Also in this case, the flooring structure reacts only locally to a dynamic loading 3.
In one alternative embodiment of the present invention, the local reac-tion to a dynamic loading is attained in that the flooring beams in the flooring structure under consideration are provided with grooves which reduce torsional rigidity and compression rigidity at the anchorage 5 point to the floor and/or ceiling panels. The same effect is achieved with separate, grooved studs in accordance with the foregoing which are mounted on the upper and/or lower side of the flooring structure.
In this embodiment, use is made either of beams 8 or studs 10 which have been provided with grooves 9. In such instance, the grooves 9 are made in a manner illustrated in Swedish patent No. 510 722. The grooves 9 in beams 8 or studs 10, respectively, are fully open in one direction and have through-going defined apertures 11 in the other direction.
Each cross section displays at least one part without any material, i.e. at least one of the grooves 9 has no residual material in that cross section.
When grooved beams according to Fig. 5 are employed, the floor may rest direct on the beams. In the embodiment according to Fig. 6, grooved studs 10 are placed between the beams 1,8 and the floor panels 5. In this latter embodiment, both beams 1,8 with and without grooves may be employed.
As a ceiling, it may be of interest to employ wood wool panels. Wood wool panels absorb sound efficiently and transmit little sound compared with, for example, a plaster board.
The form of the flooring structure may be varied in many different ways without deviating from the inventive concept as herein disclosed. How-ever, it is always important to ensure that, when one or more adjacent beams 1 are subjected to a dynamic loading, the transfer of the loading movement of the beam/beams to other beams in the flooring structure is minimized.
While the present invention shows and is described in connection with wooden flooring structures, a person skilled in the art will perceive that the same principle may be employed for flooring structures of other materials, such as, for example, concrete and steel.
Claims (9)
1. A flooring structure comprising beams (1,8) designed to reduce transmission of footstep sound, characterized in that the beams (1,8) are dynamically disengaged from one another whereby a force applied on a beam acts on said beam only.
2. A flooring structure as claimed in Claim 1, character-ized in that the flooring structure consists of closely adjacent beams (1,8).
3. A flooring structure as claimed in Claim 2, character-ized in that the distance between the beams (1,8) is less than the height of said beams.
4. The flooring structure as claimed in any of the preceding claims, characterized in that the beams (8) are provided with grooves (9).
5. The flooring structure as claimed in any of the preceding Claims, characterized in that studs (10) provided with grooves (9) are disposed between the beams (1,8) and floor panels (5).
6. The flooring structure as claimed in Claim 4 or 5, charac-terized in that the grooves (9) in the beams (8) or the studs (10), respectively, have through-going apertures (11).
7. The flooring structure as claimed in any of the preceding Claims, characterized in that the flooring structure is homogeneous in that it consists of closely adjacent beams (1,8).
8. The flooring structure as claimed in any of Claims 1-6 , char-acterized in that the flooring structure is semi-homo-geneous in that the space between adjacent beams (1,8) is filled with a material (7) of low shearing rigidity.
9. The flooring structure as claimed in any of the preceding Claims, characterized in that it is substantially manufactured from wood, concrete or steel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9900095A SE521561C2 (en) | 1999-01-15 | 1999-01-15 | Floors |
| SE9900095-2 | 1999-01-15 | ||
| PCT/SE2000/000037 WO2000042266A1 (en) | 1999-01-15 | 2000-01-13 | Flooring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2360565A1 true CA2360565A1 (en) | 2000-07-20 |
Family
ID=20414097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002360565A Abandoned CA2360565A1 (en) | 1999-01-15 | 2000-01-13 | Flooring structure |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1149212B1 (en) |
| JP (1) | JP2002535515A (en) |
| CN (1) | CN1143041C (en) |
| AT (1) | ATE267309T1 (en) |
| AU (1) | AU2141200A (en) |
| CA (1) | CA2360565A1 (en) |
| DE (1) | DE60010857T2 (en) |
| DK (1) | DK1149212T3 (en) |
| NO (1) | NO20013400L (en) |
| SE (1) | SE521561C2 (en) |
| WO (1) | WO2000042266A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594517A (en) * | 2015-01-08 | 2015-05-06 | 河南国隆实业有限公司 | Integrated house sound-insulation system and construction method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI100014B (en) * | 1995-12-13 | 1997-08-15 | Ahto Ollikainen | Horizontal structure of the building |
| SE510722C2 (en) * | 1997-11-11 | 1999-06-14 | Soedra Timber Ab | Procedure for forming grooves in a wooden rail and rule for wooden wall |
-
1999
- 1999-01-15 SE SE9900095A patent/SE521561C2/en not_active IP Right Cessation
-
2000
- 2000-01-13 AT AT00901371T patent/ATE267309T1/en not_active IP Right Cessation
- 2000-01-13 DE DE60010857T patent/DE60010857T2/en not_active Expired - Fee Related
- 2000-01-13 DK DK00901371T patent/DK1149212T3/en active
- 2000-01-13 JP JP2000593816A patent/JP2002535515A/en active Pending
- 2000-01-13 WO PCT/SE2000/000037 patent/WO2000042266A1/en active IP Right Grant
- 2000-01-13 CN CNB008028176A patent/CN1143041C/en not_active Expired - Fee Related
- 2000-01-13 CA CA002360565A patent/CA2360565A1/en not_active Abandoned
- 2000-01-13 EP EP00901371A patent/EP1149212B1/en not_active Expired - Lifetime
- 2000-01-13 AU AU21412/00A patent/AU2141200A/en not_active Abandoned
-
2001
- 2001-07-09 NO NO20013400A patent/NO20013400L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1143041C (en) | 2004-03-24 |
| EP1149212A1 (en) | 2001-10-31 |
| ATE267309T1 (en) | 2004-06-15 |
| NO20013400D0 (en) | 2001-07-09 |
| SE521561C2 (en) | 2003-11-11 |
| SE9900095L (en) | 2000-07-16 |
| DE60010857D1 (en) | 2004-06-24 |
| WO2000042266A1 (en) | 2000-07-20 |
| JP2002535515A (en) | 2002-10-22 |
| EP1149212B1 (en) | 2004-05-19 |
| NO20013400L (en) | 2001-07-09 |
| SE9900095D0 (en) | 1999-01-15 |
| DE60010857T2 (en) | 2004-11-04 |
| DK1149212T3 (en) | 2004-08-30 |
| CN1344344A (en) | 2002-04-10 |
| AU2141200A (en) | 2000-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |