EP1325200B1 - Prefabricated floor structure component and method for the production of such a component - Google Patents
Prefabricated floor structure component and method for the production of such a component Download PDFInfo
- Publication number
- EP1325200B1 EP1325200B1 EP01976960A EP01976960A EP1325200B1 EP 1325200 B1 EP1325200 B1 EP 1325200B1 EP 01976960 A EP01976960 A EP 01976960A EP 01976960 A EP01976960 A EP 01976960A EP 1325200 B1 EP1325200 B1 EP 1325200B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- floor structure
- structure component
- component according
- members
- 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.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 8
- 239000002023 wood Substances 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 11
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005352 clarification Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
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- 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
- 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
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
- E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
- E04C3/16—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with apertured web, e.g. trusses
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/18—Means for suspending the supporting construction
- E04B2009/186—Means for suspending the supporting construction with arrangements for damping vibration
Definitions
- the present invention relates to a prefabricated floor structure component.
- the invention relates to such a floor structure component of the kind comprising a structural body, consisting at least substantially of wood.
- the structural body has usually been formed either by a plate-shaped member, consisting of a plurality of laminations of solid wood, placed in side-by-side relationship, or by a box-like construction, consisting of one upper and one lower plate of solid wood, connected to each other by means of a plurality of connecting members, placed between the two plates.
- a disadvantage of floor structure components comprising a structural body of any of the two kinds above described is that the consumption of material for the production of the structural body, required in order to achieve such a body having a satisfactory bending rigidity, is very high. Besides high material costs, this also results in that the finished floor structure component will have a high weight which makes it difficult to handle the finished component, for instance in connection with the transportation thereof to a building site and the installation thereof at said site.
- Another disadvantage of the known floor structure components is that the structural body has a tendency to swell or shrink in a direction perpendicular to its longitudinal direction when subjected to variations in moisture and temperature.
- DE-U 298 03 747 discloses a prefabricated floor structure component wherein the structural body has a box-like design and consists of one upper and one lower plate of wood and a plurality of connecting members placed between said two plates. Accordingly, said floor structure component has the disadvantages above mentioned.
- the invention has for its purpose to provide an improved prefabricated floor structure component of the kind initially specified which makes is possible to avoid or at least substantially reduce the above disadvantages of the previously known floor structure components.
- the body comprises an elongate plate of wood and a plurality of elongate stiffening members which are located beneath said plate, characterized in that the plate is a glued multilayer plate, consisting of at least one layer, containing fibres extending at least substantially in the longitudinal direction of the plate, and of at least one further layer, containing fibres extending at least substantially in the transversal direction of the plate, and in that the plurality of elongate stiffening members are rigidly connected to the plate, extend in the longitudinal direction of the plate and are located spaced apart in the transversal direction of the plate and define downwardly open longitudinally extending pockets therebetween.
- the above building-up of the structural body makes it possible to attain a considerable reduction of the consumption of material in connection with the production of the body and, hence, also a corresponding reduction of the weight of the finished floor structure component. Additionally, it also eliminates the risk of any swelling or shrinkage of the body in a direction perpendicular to its longitudinal direction under the influence of moisture and temperature variations, existing in connection with the known floor structure components.
- CH-A 664 185 discloses a specific method of producing laminated boards usable for various different purposes, for instance for covering walls or ceilings or as parquet boards that may be laid on battens previously placed in selected spaced apart positions on a suitable substrate.
- said plate may suitably consist of three layers, namely one upper and one lower layer, both of which contain fibres extending at least substantially in the longitudinal direction of the plate, and one intermediate layer which contains fibres extending at least substantially in the transversal direction of the plate.
- the stiffening members may preferably be connected to said plate by means of glue joints.
- the stiffening members may suitably comprise upright web portions which are rigidly connected to said plate at their upper ends, and flange portions which are rigidly connected to said web portions and project laterally from the web portions at the lower ends of the latter,
- the stiffening members may be formed by separate web and flange members which are rigidly connected to each other, preferably by means of glue joints.
- each stiffening member may consist of two or more discrete web members which are located spaced apart along the length of the stiffening member, and at least one flange member, connected to each of said web members and extending along the entire length of the stiffning member.
- each stiffening member comprises a web member which extends along the entire length of the stiffening member
- a weight reduction may be obtained by providing the web member with a series of through openings, located in spaced apart positions along the length of the web member.
- the floor structure component is well suited for use in a floor structure which should be capable of providing a considerable attenuation of impact sounds and other low frequencey sounds.
- the floor structure component may also comprise a filling of sound-absorbing material, placed in said pockets of the body. Additionally, it may also comprise a plate which is located beneath and carried by the structural body and which, upon an installation of the floor structure component in a building, can serve as a ceiling member in a room located under the floor structure component.
- Said plate may preferably be arranged to be carried in a vertically resiliently movable state at some distance below the body by spring means acting between the.body and said plate.
- the spring means may suitably be formed and arranged in such a manner, that, prior to the installation of the floor structure component, said plate can assume a position in which it lies in close contact with the body and does not apply any forces on said spring means.
- the spring means are intended, after the installation of the floor structure component, to carry said plate at some distance below the body, they may preferably be arranged to be subjected to forces applied thereon from said plate only when the plate has moved a short distance from its said position in which it lies in close contact with the body.
- said component may preferably also comprise means for releasably locking said plate in a position in which the plate lies in close contact with the body.
- the plate may be secured to the body at two opposite ends thereof, while it is freely suspended between its said two ends.
- the invention also relates to a method for the production of the floor structure component above described.
- This method is primarily characterized by connecting said plate of wood and said stiffening members of the structural body to each other through a glueing operation which is carried out in a glue press and during which said plate is supported resting in an inverted position on a bearing surface of the glue press and the stiffening members are placed in inverted positions on said plate and pressed downwardly against the plate by press means applied against upwardly facing surfaces of said members.
- the structural body may, if so required, be transferred to one or more following working stations, in which said body, while still being in an inverted state, is subjected to a subsequent machining operation and/or is supplemented with additional means, intended to form part of the finished floor structure component.
- the floor structure component shown in Figure 1 forms a structural body, generally designated 10.
- the body comprises an elongate generally rectangular plate 11 of wood and a plurality of elongate stiffening members 12 which are located beneath said plate and are rigidly connected thereto and which extend parallel to each other in the longitudinal direction of plate 11 and are located spaced apart in the transversal direction of the plate.
- stiffening members 12 define a number of downwardly open longitudinally extending pockets 13 therebetween.
- Plate 11 consists of a glued multi-layer plate of wood, comprising three layers 14, 15 and 16 of solid wood.
- the upper and lower layers 14 and 16, respectively, contain fibres extending at least substantially in the longitudinal direction of plate 11, while the intermediate layer 15 contains fibres extending at least substantially in the transversal direction of plate 11.
- plate 11 will have a very high shape stability.
- Layer 15 will counteract any tendency of the plate to swell or shrink in a direction transverse to its longitudinal direction under the influence of occurring moisture and temprature variations, while it simultaneously yields a high bending rigidity to the plate.
- Stiffening members 12 consist of upright web members 17, which by means of glue joints, are rigidly connected to plate 11 at their upper ends, and flange members 18 which, by means of glue joints, are rigidly connected to the web members and project laterally from the web members at the lower ends of the latter.
- web members 17 as well as flange members 18 consist of solid wood and extend continuously along the entire length of plate 11.
- each web member may instead consist of a plurality of short sections 17' which are placed in spaced apart positions along the length of the stiffening member.
- each web member 17 may be provided with a series of through openings 17", located in spaced apart positions along the length of the web member.
- plate 11 At its lower side, plate 11 is provided with shallow longitudinally extending grooves 19 which receive upper end portions of web members 17 extending into said grooves. Furthermore, at each of its two longitudinal lateral edges, plate 11 is provided with a longitudinally extending groove 20. When mounting floor structure component 10 in a building, this groove serves to faciliate an interconnection between the two plates 11 of two adjacent floor structure components by means of a filling, inserted into the adjacent grooves 20 of said two plates.
- the floor structure component shown in Figure 2 also comprises a filling 21 of sound-absorbing material, e.g. mineral wool, placed in each pocket 13. Moreover, it also comprises a plate 22 which is located beneath body 10 and which is resiliently suspended from stiffening members 12 and intended, upon an installation of the floor structure component in a building, to form a ceiling member in a room located under the floor structure component.
- a filling 21 of sound-absorbing material e.g. mineral wool
- plate 22 may for instance be resiliently suspended from stiffening members 12 by means of leaf springs 23, bent into a U-shape and placed in spaced apart positions along the length of the stiffening members and carrying channel-profile metal members 24, partially received in longitudinal grooves 25, provided at the lower ends of the stiffening members.
- leaf springs 23 have been assumed to be secured to members 12 by means of screws 26 and to members 24 by means of rivets 27.
- plate 22 has been assumed to be secured to profile members 24 by means of screws 28.
- plate 22 has been shown to extend right up to the shown short end of body 10.
- the ends of plate 10 as well as the ends of profile members 24 may however be located at some distance behind the ends of the body in order hereby to make it possible, in connection with the installation of the floor structure component in a building, to place said component resting on suitable supports by means of uncovered end portions of stiffening members 12.
- a plate-shaped multi-layer member 11', intended to form plate 11, is placed in an inverted position on a bearing table 29 in a glue press 30.
- Prefabricated stiffening members 12 are then placed in an inverted state in the intended positions on member 11' which in advance has been provided with grooves 19.
- glue is applied in grooves 19 and/or on the end portions of members 12 intended to be inserted into said grooves.
- Press power is then applied on the upper ends of members 12 by means of a vertically movable press plate 32, operated by hydraulic cylinders 31.
- said press plate is provided with projecting portions 33 which can be applied under pressure against upwardly facing surfaces of members 12 and which simultaneously can serve as guide means for members 12, holding said members oriented in their intended positions during the pressing operation.
- press plate 32 is lifted, whereupon member 11' and the members 12 now rigidly connected thereto are removed from press 30.
- the product thus obtained may then be subjected to a subsequent machining operation during which member 11' is given a final shape corresponding to the desired shape of plate 11. Grooves 20 may suitably be produced during this subsequent machining operation.
- body 10 may be provided with the required supplementary parts to form a composite floor structure component according to Figure 2.
- the desired fillings 21 are inserted into pockets 13 and the profile members 24 along with the spring 23 previously secured thereto are affixed to stiffening members 12.
- additional parts may be fitted on to body 10. For instance, installations of various kinds may be placed in pockets 13 prior to the insertion of fillings 21 into said pockets.
- ceiling member plate 22 is affixed to profile members 24. The floor structure component is then ready for transportation to the desired installation site.
- the stiffening member consists of a web member 17 and a flange member 18' located beneath the web member.
- Web member 17 is connected to plate 11 and flange member 18' by finger joints 34.
- Figure 8 shows a modified design of the means serving for hanging up plate 22 in the structural body of the floor structure component. While spring 23, shown in Figures 3 and 4, has its upper leg rigidly connected to stiffening member 12 by means of screw 26, the upper leg of spring 23', shown in Figure 8, is mounted for limited vertical displacement on a bolt 26', extending in a downward direction from member 12 and provided with an enlarged head at its lower end. As a consequence during the transportation and storage of the floor structure component, stiffening member 12 may rest with its flange members 18 upon plate 22 in close contact therewith without applying any forces on spring 23'. Hereby the spring means serving to support plate 22 will not run the risk of becoming damaged or permanently deformed by any compressive forces applied thereon.
- body 10 consists of a glued multi-layer wooden plate 11, composed of boards, and a plurality of stiffening members 12 of solid wood, located beneath said plate and rigidly connected thereto and extending along the whole length of plate 11.
- Plate 22 consists on the one hand of a layer of boards 35 which extend in the transversal direction of the floor structure component and are connected to two upper joists 36, extending in the longitudinal direction of the floor structure component, and on the other hand of a lower cover plate 37 affixed to said boards.
- a front portion of plate 22 has been omitted for the purpose of clarification.
- Plate 22 is carried by body 10 by means of a number of elongate leaf springs 23", having mutually opposite end portions, by which they are affixed to two adjacent stiffening members 12, and intermediate portions, which serve to carry a joist 36.
- leaf springs 23 have been shown affixed to members 12 through the intermediary of spacers 38. The purpose of this measure is to make sure that the springs will not become loaded by plate 22 until boards 35 of said plate are located at a short distance below stiffening members 12.
Abstract
Description
- The present invention relates to a prefabricated floor structure component.
- More particularly, the invention relates to such a floor structure component of the kind comprising a structural body, consisting at least substantially of wood.
- In previously known prefabricated floor structure components of said kind, the structural body has usually been formed either by a plate-shaped member, consisting of a plurality of laminations of solid wood, placed in side-by-side relationship, or by a box-like construction, consisting of one upper and one lower plate of solid wood, connected to each other by means of a plurality of connecting members, placed between the two plates.
- A disadvantage of floor structure components comprising a structural body of any of the two kinds above described is that the consumption of material for the production of the structural body, required in order to achieve such a body having a satisfactory bending rigidity, is very high. Besides high material costs, this also results in that the finished floor structure component will have a high weight which makes it difficult to handle the finished component, for instance in connection with the transportation thereof to a building site and the installation thereof at said site.
- Another disadvantage of the known floor structure components is that the structural body has a tendency to swell or shrink in a direction perpendicular to its longitudinal direction when subjected to variations in moisture and temperature.
- DE-U 298 03 747 discloses a prefabricated floor structure component wherein the structural body has a box-like design and consists of one upper and one lower plate of wood and a plurality of connecting members placed between said two plates. Accordingly, said floor structure component has the disadvantages above mentioned.
- The invention has for its purpose to provide an improved prefabricated floor structure component of the kind initially specified which makes is possible to avoid or at least substantially reduce the above disadvantages of the previously known floor structure components.
- For this purpose, according to the invention there is proposed a prefabricated floor structure component of the kind initially specified, wherein the body comprises an elongate plate of wood and a plurality of elongate stiffening members which are located beneath said plate, characterized in that the plate is a glued multilayer plate, consisting of at least one layer, containing fibres extending at least substantially in the longitudinal direction of the plate, and of at least one further layer, containing fibres extending at least substantially in the transversal direction of the plate, and in that the plurality of elongate stiffening members are rigidly connected to the plate, extend in the longitudinal direction of the plate and are located spaced apart in the transversal direction of the plate and define downwardly open longitudinally extending pockets therebetween.
- The above building-up of the structural body makes it possible to attain a considerable reduction of the consumption of material in connection with the production of the body and, hence, also a corresponding reduction of the weight of the finished floor structure component. Additionally, it also eliminates the risk of any swelling or shrinkage of the body in a direction perpendicular to its longitudinal direction under the influence of moisture and temperature variations, existing in connection with the known floor structure components.
- CH-A 664 185 discloses a specific method of producing laminated boards usable for various different purposes, for instance for covering walls or ceilings or as parquet boards that may be laid on battens previously placed in selected spaced apart positions on a suitable substrate.
- According to a preferred embodiment of the invention, said plate may suitably consist of three layers, namely one upper and one lower layer, both of which contain fibres extending at least substantially in the longitudinal direction of the plate, and one intermediate layer which contains fibres extending at least substantially in the transversal direction of the plate.
- The stiffening members may preferably be connected to said plate by means of glue joints.
- Furthermore, the stiffening members may suitably comprise upright web portions which are rigidly connected to said plate at their upper ends, and flange portions which are rigidly connected to said web portions and project laterally from the web portions at the lower ends of the latter, In this case, the stiffening members may be formed by separate web and flange members which are rigidly connected to each other, preferably by means of glue joints.
- In order to facilitate an additional reduction of the consumption of material in connection with the production of the structural body and hence also of the weight of the finished floor structure component, each stiffening member may consist of two or more discrete web members which are located spaced apart along the length of the stiffening member, and at least one flange member, connected to each of said web members and extending along the entire length of the stiffning member.
- If instead, each stiffening member comprises a web member which extends along the entire length of the stiffening member, a weight reduction may be obtained by providing the web member with a series of through openings, located in spaced apart positions along the length of the web member.
- As a consequence of the above described manner of building up the structural body, the floor structure component is well suited for use in a floor structure which should be capable of providing a considerable attenuation of impact sounds and other low frequencey sounds.
- If the floor structure component is intended to form part of such a floor structure, it may also comprise a filling of sound-absorbing material, placed in said pockets of the body. Additionally, it may also comprise a plate which is located beneath and carried by the structural body and which, upon an installation of the floor structure component in a building, can serve as a ceiling member in a room located under the floor structure component.
- Said plate may preferably be arranged to be carried in a vertically resiliently movable state at some distance below the body by spring means acting between the.body and said plate. In order, during the storage and transportation of the floor structure component, to avoid that said spring means may be subjected to damages or permanent deformations as a consequence of any forces then applied on them, the spring means may suitably be formed and arranged in such a manner, that, prior to the installation of the floor structure component, said plate can assume a position in which it lies in close contact with the body and does not apply any forces on said spring means. Since the spring means are intended, after the installation of the floor structure component, to carry said plate at some distance below the body, they may preferably be arranged to be subjected to forces applied thereon from said plate only when the plate has moved a short distance from its said position in which it lies in close contact with the body. In order to make it more easy to handle the floor structure component in connection with the storage, transportation and installation thereof, said component may preferably also comprise means for releasably locking said plate in a position in which the plate lies in close contact with the body.
- As an alternative to the use of special spring means for carrying the plate below the body, it should be mentioned that the plate may be secured to the body at two opposite ends thereof, while it is freely suspended between its said two ends.
- The invention also relates to a method for the production of the floor structure component above described. This method is primarily characterized by connecting said plate of wood and said stiffening members of the structural body to each other through a glueing operation which is carried out in a glue press and during which said plate is supported resting in an inverted position on a bearing surface of the glue press and the stiffening members are placed in inverted positions on said plate and pressed downwardly against the plate by press means applied against upwardly facing surfaces of said members.
- After the glueing operation carried out in the glue press, the structural body may, if so required, be transferred to one or more following working stations, in which said body, while still being in an inverted state, is subjected to a subsequent machining operation and/or is supplemented with additional means, intended to form part of the finished floor structure component.
- Below, the invention is further described with reference to the accompanying drawings, in which:-
- Figure 1 shows a partial perspective view of a prefabricated floor structure component according to a first embodiment of the invention, selected by way of example only,
- Figure 2 shows a corresponding view of a prefabricated floor structure component according to a second embodiment of the invention, also selected by way of example only,
- Figure 3 shows a partial view on an enlarged scale, illustrating how a lower plate forming part of the floor structure component according to Figure 2 may be suspended in a structural body of said component located above said plate,
- Figure 4 shows a partial view in section taken along line IV-IV in Figure 3,
- Figure 5 shows an end view of a glue press utilized for the production of the structural body of the floor structure component,
- Figure 6 shows an end view illustrating a later stage during the production of the floor structure component according to Figure 2,
- Figure 7 shows a partial end view of the structural body of the floor structure component, illustrating an alternative design of a stiffening member forming part of said component,
- Figure 8 shows a partial sectional view corresponding to Figure 4 but illustrating a modified design of the means serving for suspending the lower plate from the structural body of the floor structure component,
- Figure 9 shows a perspective view, seen in an inclined direction.from below, of a floor structure component according to a further embodiment of the invention, and
- Figure 10 shows a partial view in section and on an enlarged scale of the floor structure component according to Figure 9.
- As a whole, the floor structure component shown in Figure 1 forms a structural body, generally designated 10. The body comprises an elongate generally
rectangular plate 11 of wood and a plurality of elongatestiffening members 12 which are located beneath said plate and are rigidly connected thereto and which extend parallel to each other in the longitudinal direction ofplate 11 and are located spaced apart in the transversal direction of the plate. Hereby,stiffening members 12 define a number of downwardly open longitudinally extendingpockets 13 therebetween. -
Plate 11 consists of a glued multi-layer plate of wood, comprising threelayers lower layers plate 11, while theintermediate layer 15 contains fibres extending at least substantially in the transversal direction ofplate 11. As a result of its said composition,plate 11 will have a very high shape stability.Layer 15 will counteract any tendency of the plate to swell or shrink in a direction transverse to its longitudinal direction under the influence of occurring moisture and temprature variations, while it simultaneously yields a high bending rigidity to the plate. - Stiffening
members 12 consist ofupright web members 17, which by means of glue joints, are rigidly connected toplate 11 at their upper ends, andflange members 18 which, by means of glue joints, are rigidly connected to the web members and project laterally from the web members at the lower ends of the latter. In the embodiment shown in Figure 1,web members 17 as well asflange members 18 consist of solid wood and extend continuously along the entire length ofplate 11. However, for the purpose of saving material and reducing the weight, as shown in Figure 2, each web member may instead consist of a plurality of short sections 17' which are placed in spaced apart positions along the length of the stiffening member. Alternatively, as indicated in dash-dotted lines in Figure 1, eachweb member 17 may be provided with a series of throughopenings 17", located in spaced apart positions along the length of the web member. - At its lower side,
plate 11 is provided with shallow longitudinally extendinggrooves 19 which receive upper end portions ofweb members 17 extending into said grooves. Furthermore, at each of its two longitudinal lateral edges,plate 11 is provided with a longitudinally extendinggroove 20. When mountingfloor structure component 10 in a building, this groove serves to faciliate an interconnection between the twoplates 11 of two adjacent floor structure components by means of a filling, inserted into theadjacent grooves 20 of said two plates. - In addition to a
structural body 10 of the kind shown in Figure 1, the floor structure component shown in Figure 2 also comprises afilling 21 of sound-absorbing material, e.g. mineral wool, placed in eachpocket 13. Moreover, it also comprises aplate 22 which is located beneathbody 10 and which is resiliently suspended fromstiffening members 12 and intended, upon an installation of the floor structure component in a building, to form a ceiling member in a room located under the floor structure component. - As shown more in detail in Figures 3 and 4,
plate 22 may for instance be resiliently suspended from stiffeningmembers 12 by means ofleaf springs 23, bent into a U-shape and placed in spaced apart positions along the length of the stiffening members and carrying channel-profile metal members 24, partially received inlongitudinal grooves 25, provided at the lower ends of the stiffening members. In the illustrated case,leaf springs 23 have been assumed to be secured tomembers 12 by means ofscrews 26 and tomembers 24 by means ofrivets 27. Furthermore,plate 22 has been assumed to be secured to profilemembers 24 by means ofscrews 28. - In Figure 2,
plate 22 has been shown to extend right up to the shown short end ofbody 10. In practice, the ends ofplate 10 as well as the ends ofprofile members 24 may however be located at some distance behind the ends of the body in order hereby to make it possible, in connection with the installation of the floor structure component in a building, to place said component resting on suitable supports by means of uncovered end portions of stiffeningmembers 12. - Below, a method for the production of the floor structure component shown in Figure 2 is briefly described with reference to Figures 5 and 6.
- A plate-shaped multi-layer member 11', intended to form
plate 11, is placed in an inverted position on a bearing table 29 in aglue press 30. Prefabricatedstiffening members 12 are then placed in an inverted state in the intended positions on member 11' which in advance has been provided withgrooves 19. Before placingmembers 12 upon member 11', glue is applied ingrooves 19 and/or on the end portions ofmembers 12 intended to be inserted into said grooves. - Press power is then applied on the upper ends of
members 12 by means of a verticallymovable press plate 32, operated byhydraulic cylinders 31. At its lower side, said press plate is provided with projecting portions 33 which can be applied under pressure against upwardly facing surfaces ofmembers 12 and which simultaneously can serve as guide means formembers 12, holding said members oriented in their intended positions during the pressing operation. When the glue has set,press plate 32 is lifted, whereupon member 11' and themembers 12 now rigidly connected thereto are removed frompress 30. The product thus obtained may then be subjected to a subsequent machining operation during which member 11' is given a final shape corresponding to the desired shape ofplate 11.Grooves 20 may suitably be produced during this subsequent machining operation. - The product produced through the method above described corresponds to the
structural body 10 of a floor structure component shown in Figure 1. While still being in an inverted position, in a manner indicated in Figure 6,body 10 may be provided with the required supplementary parts to form a composite floor structure component according to Figure 2. In this connection, the desiredfillings 21 are inserted intopockets 13 and theprofile members 24 along with thespring 23 previously secured thereto are affixed to stiffeningmembers 12. Furthermore, if so desired, additional parts may be fitted on tobody 10. For instance, installations of various kinds may be placed inpockets 13 prior to the insertion offillings 21 into said pockets. Finally,ceiling member plate 22 is affixed to profilemembers 24. The floor structure component is then ready for transportation to the desired installation site. - In Figure 7, there is shown a stiffening member of a slightly modified design. In this case, the stiffening member consists of a
web member 17 and a flange member 18' located beneath the web member.Web member 17 is connected to plate 11 and flange member 18' by finger joints 34. - Figure 8 shows a modified design of the means serving for hanging up
plate 22 in the structural body of the floor structure component. Whilespring 23, shown in Figures 3 and 4, has its upper leg rigidly connected to stiffeningmember 12 by means ofscrew 26, the upper leg of spring 23', shown in Figure 8, is mounted for limited vertical displacement on a bolt 26', extending in a downward direction frommember 12 and provided with an enlarged head at its lower end. As a consequence during the transportation and storage of the floor structure component, stiffeningmember 12 may rest with itsflange members 18 uponplate 22 in close contact therewith without applying any forces on spring 23'. Hereby the spring means serving to supportplate 22 will not run the risk of becoming damaged or permanently deformed by any compressive forces applied thereon. - In the floor structure component shown in Figures 9 and 10,
body 10 consists of a glued multi-layerwooden plate 11, composed of boards, and a plurality of stiffeningmembers 12 of solid wood, located beneath said plate and rigidly connected thereto and extending along the whole length ofplate 11.Plate 22 consists on the one hand of a layer ofboards 35 which extend in the transversal direction of the floor structure component and are connected to twoupper joists 36, extending in the longitudinal direction of the floor structure component, and on the other hand of alower cover plate 37 affixed to said boards. In Figure 9, a front portion ofplate 22 has been omitted for the purpose of clarification. -
Plate 22 is carried bybody 10 by means of a number ofelongate leaf springs 23", having mutually opposite end portions, by which they are affixed to twoadjacent stiffening members 12, and intermediate portions, which serve to carry ajoist 36. In Figure 10, the leaf springs have been shown affixed tomembers 12 through the intermediary ofspacers 38. The purpose of this measure is to make sure that the springs will not become loaded byplate 22 untilboards 35 of said plate are located at a short distance below stiffeningmembers 12. - The invention is not restricted to the.embodiments above described and shown in the drawings. Instead, many other embodiments are feasible within the scope of the invention as defined in the following claims.
Claims (16)
- prefabricated floor structure component, comprising a structural body (10), consisting at least substantially of wood, wherein the body comprises an elongate plate (11) of wood and a plurality of elongate stiffening members (12) which are located beneath said plate (11), characterized in that the plate (11) is a glued multilayer plate, consisting of at least one layer (14, 16), containing fibres extending at least substantially in the longitudinal direction of the plate (11), and of at least one further layer (15), containing fibres extending at least substantially in the transversal direction of the plate (11), and in that the plurality of elongate stiffening members (12) are rigidly connected to the plate (11), extend in the longitudinal direction of the plate (11) and are located spaced apart in the transversal direction of the plate (11) and define downwardly open longitudinally extending pockets (13) therebetween.
- Floor structure component according to claim 1, characterized in that said plate (11) consists of three layers (14, 15, 16), namely one upper and one lower layer (14, 16), both of which contain fibres extending at least substantially in the longitudinal direction of the plate (11), and one intermediate layer (15) which contains fibres extending at least substantially in the transversal direction of the plate.
- Floor structure component according to claim 1 or 2, characterized in that the stiffening members (12) are connected to said plate (11) by means of glue joints.
- Floor structure component according to any of the preceding claims, characterized in that the stiffening members (12) comprise upright web portions (17) which are rigidly connected to said plate (11) at their upper ends, and flange portions (18) which are rigidly connected to said web portions (17) and project laterally from the web portions (17) at the lower ends of the latter.
- Floor structure component according to claim 4, characterized in that the stiffening members (12) are formed by separate web and flange members (17, 18) which are rigidly connected to each other, preferably by means of glue joints.
- Floor structure component according to claim 5, characterized in that each stiffening member (12) consists of two or more discrete web members (17') which are located spaced apart along the length of the stiffening member (12), and at least one flange member (18), connected to each of said web members (17') and extending along the entire length of the stiffening member (12).
- Floor structure component according to claim 5, characterized in that each stiffening member (12) comprises a web member (17) which extends along the entire length of the stiffening member (12) and is provided with a series of through openings (17"), located in spaced-apart positions along the length of the web member (17).
- Floor structure component according to any of the preceding claims, characterized in that it also comprises a filling (21) of sound-absorbing material, placed in said pockets (13) of the body (10).
- Floor structure component according to claim 8, characterized in that it also comprises a plate (22) which is located beneath and carried by the structural body (10) and which upon an installation of the floor structure component in a building can serve as a ceiling member in a room located under the floor structure component.
- Floor structure component according to claim 9, characterized in that said plate (22) is arranged to be carried in a vertically resiliently movable state at some distance below the body (10) by spring means (23; 23'; 23") acting between the body (10) and said plate (22).
- Floor structure component according to claim 10, characterized in that, prior to the installation of the floor structure component, said plate (22) can assume a position in which it lies in close contact with the body (10) and does not apply any forces on said spring means (23'; 23").
- Floor structure component according to claim 11, characterized in that said spring means (23', 23") are arranged to be subjected to forces applied thereon from said plate (22) only when the plate has moved a short distance from its said position in which it lies in close contact with the body (10).
- Floor structure component according to any of claims 10 - 12, characterized in that it comprises means for releasably locking said plate (22) in a position in which the plate lies in close contact with the body (10).
- Floor structure component according to claim 9, characterized in that said plate (22) is secured to the body (10) at two opposite ends thereof, while it is freely suspended between its said two ends.
- A method for the production of a floor structure component according to any of the preceding claims, characterized by connecting said plate (11) of wood and said stiffening members (12) of the structural body (10) to each other through a glueing operation which is carried out in a glue press (30) and during which said plate (11) is supported resting in an inverted position on a bearing surface (29) of the glue press (30) and the stiffening members (12) are placed in inverted positions on said plate (11) and pressed downwardly against the plate by press means (33) applied against upwardly facing surfaces of said members.
- A method according to claim 15, characterized by transferring the structural body (10), after the glueing operation carried out in the glue press (30), to one or more following working stations, in which said body, while still being in an inverted state, is subjected to a subsequent machining operation and/or is supplemented with additional means (21, 24, 22), intended to form part of the finished floor structure component.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0003701A SE519234C2 (en) | 2000-10-13 | 2000-10-13 | Floor unit for residential buildings comprising a glued wood assembly made up of a three ply cross grained top panel supported on longitudinal joist members with added bottom edge |
SE0003701 | 2000-10-13 | ||
SE0004810A SE519238C2 (en) | 2000-12-22 | 2000-12-22 | Floor unit for residential buildings comprising a glued wood assembly made up of a three ply cross grained top panel supported on longitudinal joist members with added bottom edge |
SE0004810 | 2000-12-22 | ||
PCT/SE2001/002213 WO2002031283A1 (en) | 2000-10-13 | 2001-10-11 | Prefabricated floor structure component and method for the production of such a component |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1325200A1 EP1325200A1 (en) | 2003-07-09 |
EP1325200B1 true EP1325200B1 (en) | 2007-02-14 |
Family
ID=26655262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01976960A Expired - Lifetime EP1325200B1 (en) | 2000-10-13 | 2001-10-11 | Prefabricated floor structure component and method for the production of such a component |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1325200B1 (en) |
AT (1) | ATE354004T1 (en) |
DE (1) | DE60126633T2 (en) |
DK (1) | DK1325200T3 (en) |
NO (1) | NO323896B1 (en) |
WO (1) | WO2002031283A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2395728A (en) * | 2002-11-27 | 2004-06-02 | Charles Edward Averill Fowler | Partly prefabricated intermediate floor for timber frame building |
FR2873728B1 (en) * | 2004-07-29 | 2008-04-25 | Jean Luc Sandoz | ELEMENT CONSTRUCTION PLAN AND ARRANGEMENT FORMED FROM ONE OR MORE ELEMENTS |
EP1842978A1 (en) * | 2006-04-06 | 2007-10-10 | Rockwool International A/S | A device and system for suspending a building panel |
ES2334001B1 (en) * | 2007-11-22 | 2011-01-21 | Jesus Maria Martin Camara | TARIMA PAVEMENT ASSEMBLY, TO BE INSTALLED ON RASTRELS OR FLOATING, AND SPECIAL PLATE FOR HEATERS HEATED OR REFRIGERATED. |
NO20092929A1 (en) * | 2009-09-01 | 2011-03-02 | Moelven Utvikling As | Trehulldekket |
DE202010001408U1 (en) * | 2010-01-26 | 2010-05-06 | Lignotrend Produktions Gmbh | A wooden panel |
AT508759B1 (en) * | 2010-02-11 | 2011-04-15 | Palfi Michael | CONSTRUCTION ELEMENT FOR WALL AND CEILING SYSTEMS |
SI23841B (en) * | 2012-11-14 | 2022-04-29 | Cbd D.O.O. | Construction element for wooden wall and ceiling construction and method of manufacturing |
SE542814C2 (en) * | 2012-11-23 | 2020-07-14 | Akoustos Ab | Damping device to reduce the propagation of vibrations, sounds or noise and method of mounting using the damping device |
FR3000510A1 (en) * | 2012-12-27 | 2014-07-04 | Charpente Houot | Method for manufacturing and mounting of prefabricated composite panel for floor box in building, involves establishing insulator between beams, so as to leave free spaces between beams and above insulator |
NO345479B1 (en) * | 2018-08-27 | 2021-02-22 | Arne Vaslag | Composite, cooperating and elongated building element, and method for manufacturing such a building element. |
IT201900006574A1 (en) * | 2019-05-06 | 2020-11-06 | Stefano Grosso | Process for making frames for false ceilings and frames obtained with the process. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH664185A5 (en) * | 1983-10-12 | 1988-02-15 | Naegeli Geb | Block board production method - by sawing through middle after gluing lengthwise and transverse panels either side of board |
US5277010A (en) * | 1991-05-31 | 1994-01-11 | Airthrust International, Inc. | Flooring support |
DE19734698C2 (en) * | 1997-08-11 | 2001-08-16 | Pegel Bau Gmbh | Floorless flooring for beamed ceilings and process for its manufacture |
DE29803747U1 (en) * | 1998-03-04 | 1998-07-02 | Lechner Walter | Prefabricated ceiling element |
-
2001
- 2001-10-11 AT AT01976960T patent/ATE354004T1/en active
- 2001-10-11 DE DE60126633T patent/DE60126633T2/en not_active Expired - Lifetime
- 2001-10-11 DK DK01976960T patent/DK1325200T3/en active
- 2001-10-11 WO PCT/SE2001/002213 patent/WO2002031283A1/en active IP Right Grant
- 2001-10-11 EP EP01976960A patent/EP1325200B1/en not_active Expired - Lifetime
-
2002
- 2002-11-13 NO NO20025434A patent/NO323896B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO20025434D0 (en) | 2002-11-13 |
ATE354004T1 (en) | 2007-03-15 |
DE60126633D1 (en) | 2007-03-29 |
EP1325200A1 (en) | 2003-07-09 |
DK1325200T3 (en) | 2007-06-11 |
DE60126633T2 (en) | 2007-11-22 |
NO323896B1 (en) | 2007-07-16 |
NO20025434L (en) | 2002-12-03 |
WO2002031283A1 (en) | 2002-04-18 |
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