Fire protection sealing device and a fire protection method for a movement joint of a building

Description

[0001] The invention relates to a fire protection sealing device and a fire protection method for an expansion joint of a building with the features of the preamble of claim 1 or 13, as well as an expansion joint of a building with a fire protection sealing device.

[0002] A fire-resistant sealing device of this type typically includes a fire-resistant material to seal a joint cavity between two opposing building components in the event of a fire, such as between two wall, floor, or ceiling segments of a building. The fire-resistant material can be an intumescent mat that expands in the event of a fire, thereby sealing the expansion joint. The fire-resistant sealing device also includes at least one cover plate for attachment to the two opposing building components of the expansion joint. This covers and protects the fire-resistant material and the joint cavity. To still allow for some movement between the two opposing building components of the expansion joint, the cover plate is designed with a movement allowance, which is created, for example, by deflection of the cover plate or overlapping sections.

[0003] EP 1 589 157 A1 discloses a movement joint between opposing boundary surfaces of a first and a second component, comprising a sealing device for sealing a joint cavity and a cover plate designed with a movement allowance and attached to the components to cover the joint cavity. The cover plate is backed with fire-resistant material, at least within the joint cavity.

[0004] US 5 326 609 A discloses a fire protection sealing device according to the preamble of claim 1 and a fire protection method according to the preamble of claim 12.

[0005] A disadvantage of the well-known fire protection sealing device is that it is often inflexible in its application given the available space.

[0006] The object of the present invention is therefore to provide a fire protection sealing device and a fire protection method for a movement joint of a building, as well as a movement joint of a building with a fire protection sealing device, which can be used more flexibly in the available space.

[0007] To solve the problem, the invention provides a fire-resistant sealing device for an expansion joint of a building, comprising the features of claim 1. Advantageous embodiments of the invention are described in the dependent claims.

[0008] Extensive investigations by the applicant have shown that the cover plate made of sheet metal with the domed embossing transmits a smaller proportion of radiant heat to the underlying fire protection material and the two opposing components of the expansion joint. Consequently, the cover plate can be installed in a tighter bond with the fire protection material. Furthermore, the sheet metal with the domed embossing can be made particularly thin, making it easier to adapt to an existing expansion joint. The domed embossing provides it with the necessary structural rigidity while also allowing it to be bent with ease. Therefore, the fire protection sealing device according to the invention is particularly flexible in its application within the available space.

[0009] The two opposing components of the movement joint can be two segments of a building that move relative to each other due to environmental conditions, in particular with an expansion and / or compression movement of up to 100 mm. The two opposing components can be arranged with a joint width of up to 300 mm. Environmental conditions can refer, in particular, to weather-related changes in temperature, pressure, and / or humidity. It is conceivable that the two opposing components move relative to each other in at least one of the three spatial axes due to the environmental conditions. The two opposing components can, for example, be segments of a wall, ceiling, and / or floor.It is also conceivable that one of the two opposing components is a segment of the wall and the other is a segment of the ceiling or floor. Likewise, one of the two opposing components can be a segment of a first wall and the other a segment of a second wall, with the two walls lying in a common plane or perpendicular to each other. In particular, the two opposing components can form an angle of 90° or 180° with each other. The two opposing components can have a thickness of at least 100 mm.

[0010] The sheet metal can be made of stainless steel, galvanized steel, aluminum, or copper. Stainless steel here refers to any non-corrosive steel sheet. The embossed pattern can consist of regular or irregular raised and recessed areas, alternating between the two, arranged in a honeycomb, diamond, or checkerboard pattern. These raised and recessed areas can be spherical or semi-spherical. The sheet metal can be foil-like and / or have a thickness of up to 2 mm, particularly up to 1 mm, and furthermore, particularly up to 0.5 mm.

[0011] The at least one cover plate comprises a first, S-shaped folded section and a second, straight section, the second section being inserted into a fold of the first to provide a degree of movement. This allows for particularly simple manufacturing of the cover plate, while still providing a large lateral movement reserve within the cover plate. "S-shaped folded" here can mean that the first section is folded twice, especially along two parallel longitudinal folds, so that the fold is formed towards the second section. "Longitudinal fold" here can mean a 180° fold. One of the two longitudinal folds can be folded in the opposite direction to the other.

[0012] The domed embossing of the first and / or second sheet metal section can be at least partially compressed in the overlap area of ​​the two sections to homogenize the sliding properties of the movement reserve. This compression flattens the raised and recessed areas of the domed embossing, allowing the second, straight sheet metal section to move freely within the fold of the first. This results in a particularly homogeneous movement of the expansion joint for the cover plate as a whole. The overlap area can encompass all or part of the S-shaped folded area of ​​the first sheet metal section and / or all or part of the inserted area of ​​the second sheet metal section. The formation of multiple layers of the two sheets in this area ensures the required stability of the cover plate despite the compression.

[0013] At least one cover plate can be designed with a curvature to provide the movement allowance. This makes the movement allowance particularly easy to manufacture. The curvature can have an arc-shaped, U-shaped, or V-shaped profile in cross-section. In this case, at least one cover plate can be exactly a single-piece cover plate.

[0014] The fire protection material can comprise at least one intumescent mat that expands in the event of a fire. This ensures a particularly effective seal of cavities in case of fire, thus inhibiting oxygen exchange and / or the spread of smoke. The intumescent mat can include an intumescent material that expands and / or foams up when exposed to heat. For example, the intumescent mat can comprise a mat-like substrate, in particular a fiberglass fabric or fleece, coated on one or both sides with the intumescent material. The intumescent material can, for example, contain graphite, which foams up above a certain temperature. The fire protection material can comprise several layers of intumescent mats that expand in the event of a fire.

[0015] At least one intumescent mat can be folded and / or arched to provide support for movement. This prevents the intumescent mat from tearing due to movement of the expansion joint.

[0016] It is conceivable that the intumescent mat is directly connected to at least one cover plate at its edges. This allows the intumescent mat to be connected particularly easily to the cover plate and the two opposing components of the expansion joint. Furthermore, this ensures that the entire joint cavity is sealed.

[0017] The fire-resistant sealing device can also include insulating material for thermal insulation, particularly ceramic wool and / or mineral wool. This reduces heat spread in the event of a fire and results in overall improved thermal insulation of the building.

[0018] It is also conceivable that combustible materials, such as polystyrene used for thermal insulation, are present inside the expansion joint. For example, the combustible material could be covered by the fire-resistant material and at least one cover plate. This would ensure both good thermal insulation and effective fire protection. Furthermore, existing buildings in need of renovation that contain combustible materials in the expansion joint can be retrofitted with effective fire protection.

[0019] It is conceivable that at least one cover plate is designed with elongated holes to allow for movement. This makes it particularly easy to accommodate minor movements. In this case, the cover plate can be designed as a single, one-piece, and especially flat, cover plate. For example, the one-piece cover plate can have at least two elongated holes parallel to a first longitudinal side and at least two elongated holes perpendicular to a second longitudinal side. The first and second longitudinal sides of the one-piece cover plate can run parallel to each other, particularly in the longitudinal direction of the expansion joint.

[0020] The fire-resistant sealing device may also include fasteners to connect the cover plate to the two opposing components of the expansion joint. This ensures that the cover plate is securely connected to the two opposing components. The fasteners may consist of a clamping strip with multiple holes and screws, the screws being passable through the holes in the clamping strip and attachable to the two opposing components of the expansion joint. Alternatively, the fasteners may include washers, nuts, and / or screws.

[0021] Furthermore, the invention provides an expansion joint of a building with a fire-resistant sealing device according to any one of claims 1-11. The expansion joint can comprise the features described above with respect to the fire-resistant sealing device individually or in any combination.

[0022] Furthermore, the invention provides a fire protection method for an expansion joint of a building with the features of claim 13. Advantageous features of the fire protection method are specified in the dependent claims. The fire protection method can include, individually or in any combination, the features previously described with respect to the fire-resistant sealing device, in particular according to any one of claims 1 to 11.

[0023] By providing the sheet metal with the domed embossing and forming at least one cover plate from it, only a minimal proportion of the radiant heat is transmitted to the underlying fire protection material and the two opposing components of the expansion joint. Consequently, the cover plate can be installed in a tighter bond with the fire protection material. Furthermore, the sheet metal with the domed embossing can be made particularly thin, making it easier to adapt to an existing expansion joint. The domed embossing provides it with the necessary structural rigidity while also allowing it to be bent with ease. Therefore, the fire protection sealing device according to the invention is particularly flexible in its application within the available space.

[0024] The movement reserve is created by folding a first section of the at least one cover plate into an S-shape and inserting a second, straight section of the at least one cover plate into a fold of the first section. This allows for a particularly large movement of the expansion joint without deformation or warping of the cover plate.

[0025] The domed embossing of the first and / or second sheet metal section can be pressed together in an overlap area to homogenize the sliding properties of the movement reserve. This makes it particularly easy to slide the two sheet metal sections against each other, so that no stresses build up when the movement reserve is moved.

[0026] At least one cover plate can be curved to create the movement reserve. This makes the movement reserve particularly easy to implement.

[0027] Further features and advantages of the invention are explained in more detail below with reference to the exemplary embodiments shown in the figures. These show: Figures 1A-1: Exemplary embodiment of a fire-resistant sealing device according to the invention for an expansion joint of a building in a perspective view and in a sectional view; Figures 2A-2: Further embodiment of a fire-resistant sealing device according to the invention for an expansion joint of a building in a perspective view and in a sectional view; Figures 3A-3: Further embodiment of a fire-resistant sealing device not according to the invention for an expansion joint of a building in a perspective view and in a sectional view; Figures 4A-4: Further embodiment of a fire-resistant sealing device not according to the invention for an expansion joint of a building in a perspective view and in a sectional view;and Figures 5A-5A show a further embodiment of a non-inventive fire protection sealing device for an expansion joint of a building in a perspective view and in a sectional view.

[0028] In the Figures 1A - 1BFigure 1 shows an embodiment of a fire-resistant sealing device 1 according to the invention for an expansion joint F of a building in a perspective view and a sectional view. The two opposing components 2, 3 of the expansion joint F, which are arranged at a distance of typically up to 300 mm, are shown. The components 2, 3 are, for example, two segments of a wall, a ceiling, or a floor. They can be made of concrete or any other suitable building material. To prevent the spread of smoke and heat in the event of a fire, the fire-resistant sealing device 1 is provided with the fire-resistant material 10.1 for sealing the joint cavity H and with the cover plate 20 for covering the fire-resistant material 10.1 and the joint cavity H. The cover plate 20 is attached to the two opposing components 2, 3.

[0029] However, changes in temperature, pressure, and / or humidity can cause expansion and / or compression of the joint cavity H of up to 100 mm. Consequently, the fire-resistant sealing device 1 must be able to accommodate this expansion and / or compression by means of a movement reserve R. For this purpose, the cover plate 20 is designed with this movement reserve R, so that the expansion and / or compression does not lead to excessive stresses in the cover plate 20.

[0030] The fire protection material 10.1 is an intumescent mat, for example a fiberglass mat or fleece, which is coated on one or both sides with an intumescent layer. When exposed to heat, the intumescent layer expands and thus seals the joint cavity H.

[0031] Furthermore, in the Figure 1AIt can be seen that the cover plate 20 comprises a sheet with a dome-shaped embossing, in particular a stainless steel sheet. Other materials are also conceivable, such as a galvanized sheet, an aluminum sheet, or a copper sheet. This results in a smaller proportion of the radiant heat being transmitted to the fire protection material 10.1 behind it and to the two opposing components 2, 3. Furthermore, the dome-shaped embossing allows the sheet to be made particularly thin, so that it has the necessary structural rigidity on the one hand, and can be easily adapted to an existing movement joint F on the other. Consequently, the fire protection sealing device 1 can be used with particular flexibility in an existing space.

[0032] Furthermore, it can be seen that the cover plate 20 comprises a first, S-shaped folded partial plate 20.1 and a second, straight partial plate 20.2, wherein the second partial plate 20.2 is inserted into a fold of the first partial plate 20.1 to form the movement reserve R. This can be seen in the Figure 1B The first, S-shaped folded sheet 20.1 has two longitudinal folds, each of which is bent by 180°. This forms two folds, with the second sheet 20.2 being inserted into the fold open towards it to form the movement reserve R.

[0033] Furthermore, the spherical embossing in an overlap area of ​​the two partial sheets 20.1, 20.2 is at least partially compressed in order to homogenize the sliding properties of the movement reserve R. As is particularly well demonstrated in the Figure 1BAs can be seen, the overlap area is formed by several layers of the first sheet 20.1 and one layer of the second sheet 20.2, thus ensuring the required structural stability in the overlap area even without the domed embossing. The compression flattens the raised and recessed areas of the domed embossing, allowing the second sheet 20.2 to slide laterally particularly well within the fold of the first sheet 20.1. Consequently, even with a sheet featuring the domed embossing, it is possible to create a particularly homogeneous movement reserve R.

[0034] Furthermore, it can be seen that the intumescent mat of the fire protection material 10.1 is folded twice to support the movement reserve R. This prevents the intumescent mat from being stretched or even tearing if the building moves. At the edges, the intumescent mat is connected to the cover plate 20, so that the entire joint cavity H is covered.

[0035] Furthermore, insulation material 11 is provided for thermal insulation, which comprises, for example, several compressed layers of mineral wool (e.g., of the SONOROCK type, 60 mm thick). This results in particularly good thermal insulation.

[0036] The fire-resistant sealing device 1 further comprises the fastening elements 30, with two clamping strips 30.1 and screws 30.2. This secures the cover plate 20 and the fire-resistant material 10.1 lengthwise to the two opposing components 2, 3 of the movement joint F. The clamping strips 30.1 are provided with through holes, and the components 2, 3 with corresponding fastening holes for the screws 30.2. This allows the fire-resistant sealing device to be reliably fastened to the two building sections on the two opposing components 2, 3.

[0037] In the Figures 2A - 2B Figure 1 shows a further embodiment of a fire-resistant sealing device 1 according to the invention for an expansion joint F of a building in a perspective view and in a sectional view. The fire-resistant sealing device 1 differs from the previous embodiment in the Figures 1A - 1Bby attaching a cover plate 20 to both outer sides A, B of the two components 2, 3 and several layers of fire protection material 10.1-10.3 behind it to seal the joint cavity H in case of fire from both outer sides A, B.

[0038] As already described in the preceding embodiment, the cover plates 20 are made of sheet metal, in particular stainless steel sheet metal with a domed embossing. Other materials are also conceivable here, such as galvanized sheet metal, aluminum or copper sheet metal.

[0039] The cover plates 20 are each formed, as in the preceding embodiment, from a first, S-shaped folded partial plate 20.1 and a second, straight partial plate 20.2, wherein the second partial plate 20.2 is inserted into a fold of the first partial plate 20.1 to form the movement reserve R. It is conceivable that the domed embossing in an overlap area of ​​the two partial plates 20.1, 20.2 is at least partially compressed to homogenize the sliding properties of the movement reserve R.

[0040] In contrast to the previous embodiment in the Figures 1A - 2B Several layers of fire protection material 10.1 - 10.3 are arranged here to create a larger quantity of expandable material. This ensures that the joint cavity is filled in the event of a fire, even without the need for insulating material H.

[0041] Because both sides A, B of the two components 2, 3 are fitted with fire-resistant material 10.1-10.3 and a cover plate 20, the joint cavity H can be hermetically sealed. Furthermore, the multi-layered fire-resistant material 10.1-10.3 causes a particularly large amount of intumescent material to expand in the event of a fire. This also makes it possible to seal movement joints F that have a visible area on both sides, which is then protected by the cover plate 20.

[0042] The remaining features correspond to those of the exemplary embodiment in the Figures 1A - 1B .

[0043] In the Figures 3A - 3B A further embodiment of a non-inventive fire protection sealing device 1 for an expansion joint F of a building is shown in a perspective view and in a sectional view. It differs from the previous embodiment in the Figures 2A - 2BThis is achieved by the fact that the two cover plates 20 are each formed in one piece with a curvature to create the movement reserve R. This allows movement joints F with lower expansion and / or compression movements to be sealed particularly easily.

[0044] The one-piece cover plates 20 are each formed from a single sheet, in particular stainless steel sheet with a dome-shaped embossing. Other materials are also conceivable, such as galvanized sheet, aluminum or copper sheet.

[0045] Furthermore, it can be seen that the first layer 10.1 of the fire protection material is curved and the subsequent, second layer of the fire protection material 10.2 is formed with a fold to support the movement reserve R. This makes the fire protection sealing device 1 particularly easy to manufacture.

[0046] The remaining features correspond to those of the exemplary embodiment in the Figures 2A - 2B .

[0047] In the Figures 4A - 4B A further embodiment of a non-inventive fire protection sealing device 1 for an expansion joint F of a building is shown in a perspective view and in a sectional view. It differs from the previous embodiment in the Figures 3A - 3B The cover plate 20 has a more pronounced, V-shaped curvature to provide greater flexibility R. Furthermore, it differs in that an intermediate layer of insulating material 12, for example a layer of ceramic wool, preferably 6 mm thick, is located between the two layers of fire protection material 10.1, 10.2. This results in particularly simple and effective thermal insulation. In addition, the two layers of fire protection material 10.1, 10.2 are sandwiched together with the intermediate layer of insulating material 12, which mechanically stabilizes the fire protection material 10.1, 10.2.

[0048] Here too, the one-piece cover plate 20 is formed from a sheet of metal, in particular stainless steel sheet with a dome-shaped embossing. Other materials are also conceivable, such as galvanized sheet, aluminum or copper sheet.

[0049] The remaining features correspond to those of the exemplary embodiment in the Figures 3A - 3B .

[0050] In the Figures 5A - 5B A further embodiment of a non-inventive fire protection sealing device 1 for an expansion joint F of a building is shown in a perspective view and in a sectional view. It differs from the previous embodiment in the Figures 4A - 4B by the fact that the fire protection sealing device 1 with the fire protection material 10.1, 10.2 and with the cover plate 20 is only provided on one outside of the two opposing building components 2, 3 of the building.

[0051] The movement reserve R is formed by a U-shaped curvature of the cover plate 20. A first layer of fire protection material 10.1 is connected to this. Separated by a sealed air cavity L, the U-shaped insulation material 12 follows, with the associated second layer of fire protection material 10.2.

[0052] The insulation material 12 can also include an intermediate layer of ceramic wool, for example with a thickness of 25 mm. Since the movement joint F is only sealed on one side, the insulation material 12 is correspondingly thicker than in the previous embodiment.

[0053] The cover plate 20 is in turn formed from sheet metal, in particular stainless steel sheet metal, which is provided with the dome-shaped embossing. Other materials are also conceivable here, such as galvanized sheet metal, aluminum or copper sheet metal.

[0054] The remaining features correspond to those of the exemplary embodiment in the Figures 4A - 4B . Because in the exemplary embodiments of the Figures 1A - 5B Since the cover plate 20 is formed from the sheet metal with the domed embossing, the smallest possible proportion of radiant heat is transferred to the fire protection material 10.1 - 10.3 behind it and to the two opposing components 2, 3 of the movement joint F. Consequently, the cover plate 20 can be installed in a tighter bond with the fire protection material 10.1 - 10.2. Furthermore, the sheet metal with the domed embossing can be made particularly thin, making it easier to adapt to an existing movement joint F. The domed embossing provides it with the necessary structural rigidity while also allowing it to be bent very easily. Therefore, the fire protection sealing device 1 can be used with particular flexibility within the available space.

[0055] It is understood that the features described in the preceding embodiments are not limited to these combinations of features, but that individual features or any other combinations of features are also possible within the scope of the invention as defined in the attached claims.

Claims

1. Fire protection sealing device (1) for a movement joint (F) of a building, comprising - a fire protection material (10.1 - 10.3) for sealing a joint cavity (H) between two opposing components (2, 3) of the movement joint (F) in case of fire, and - at least one cover plate (20) for attachment to the two opposing components (2, 3) of the movement joint (F) to cover the fire protection material (10.1 - 10.3) and the joint cavity (H), wherein the cover plate (20) is designed with a movement reserve (R) to allow movement of the movement joint (F), wherein the at least one cover plate (20) comprises a plate with a dome embossing, characterised in that the at least one cover plate (20) comprises a first, S-shaped folded partial plate (20.1) and a second, straight partial plate (20.2), wherein the second partial plate (20.2) is inserted into a fold of the first partial plate (20.1) to form the movement reserve (R).

2. Fire protection sealing device (1) according to claim 2, wherein the dome embossing of the first partial sheet (20.1) and / or the second partial sheet (20.2) is designed at least partially compressed in an overlap area of the two partial sheets (20.1, 20.2) in order to homogenise a sliding property of the movement reserve (R).

3. Fire protection sealing device (1) according to one of the preceding claims, wherein the at least one cover plate (20) is designed with a curvature to form the movement reserve (R).

4. Fire protection sealing device (1) according to claim 3, wherein the curvature in cross-section comprises an arc-shaped, a U- or a V-shaped profile.

5. Fire protection sealing device (1) according to one of the preceding claims, wherein the fire protection material (10.1 - 10.3) comprises at least one intumescent mat which foams up in case of fire.

6. Fire protection sealing device (1) according to claim 5, wherein the at least one intumescent mat for supporting the movement reserve (R) is formed at least simply folded and / or curved.

7. Fire protection sealing device (1) according to claim 5 or 6, wherein the intumescent mat is directly connected at its edges to the at least one cover plate (20).

8. Fire protection sealing device (1) according to one of the preceding claims, wherein the fire protection sealing device (1) further comprises an insulating material (11, 12) for thermal insulation, in particular with ceramic wool and / or mineral wool.

9. Fire protection sealing device (1) according to one of the preceding claims, wherein the at least one cover plate (20) is designed with elongated holes as a movement reserve (R).

10. Fire protection sealing device (1) according to one of the preceding claims, wherein the fire protection sealing device (1) further comprises fastening elements (30) to connect the cover plate (20) to the two opposing components (2, 3) of the movement joint (F).

11. Movement joint (F) of a building with a fire protection sealing device (1) according to one of claims 1 - 10.

12. Fire protection method for a movement joint (F) of a building, wherein the movement joint (F) is provided with a fire protection material (10.1 - 10.3) in order to seal a joint cavity (H) between two opposing components (2, 3) of the movement joint (F) in case of fire, wherein at least one cover plate (20) is attached to the two opposing components (2, 3) of the movement joint (F) in order to cover the fire protection material (10.1 - 10.3) and the joint cavity (H), wherein movement of the movement joint (F) is enabled with a movement reserve (R) of the cover plate (20), wherein the at least one cover plate (20) is formed from a sheet which is provided with a dome embossing, characterised in that a first partial sheet (20.1) of the at least one cover sheet (20) is folded in an S-shape and a second, straight partial sheet (20.2) of the at least one cover sheet (20) is inserted into a fold of the first partial sheet (20.1) to form the movement reserve (R).

13. Fire protection method according to claim 12, wherein the dome embossing of the first partial sheet (20.1) and / or the second partial sheet (20.2) is pressed together in an overlap area to homogenise a sliding property of the movement reserve (R).

14. Fire protection method according to one of claims 12 - 13, wherein the at least one cover plate (20) is curved to form the movement reserve (R).