EP2642039A1 - Éléments d'isolation pour structures de façade vissées ainsi que structure de façade - Google Patents

Éléments d'isolation pour structures de façade vissées ainsi que structure de façade Download PDF

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Publication number
EP2642039A1
EP2642039A1 EP12160722.0A EP12160722A EP2642039A1 EP 2642039 A1 EP2642039 A1 EP 2642039A1 EP 12160722 A EP12160722 A EP 12160722A EP 2642039 A1 EP2642039 A1 EP 2642039A1
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EP
European Patent Office
Prior art keywords
insulating element
insulating
facade
dämmelements
core region
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Withdrawn
Application number
EP12160722.0A
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German (de)
English (en)
Inventor
Dr.-Ing. Harald Schulz
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Ingenieur-Buero Dr-Ing Harald Schulz
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Ingenieur-Buero Dr-Ing Harald Schulz
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Application filed by Ingenieur-Buero Dr-Ing Harald Schulz filed Critical Ingenieur-Buero Dr-Ing Harald Schulz
Priority to EP12160722.0A priority Critical patent/EP2642039A1/fr
Publication of EP2642039A1 publication Critical patent/EP2642039A1/fr
Withdrawn legal-status Critical Current

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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
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88—Curtain walls
    • E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms
    • E04B2/967—Details of the cross-section of the mullions or transoms

Definitions

  • the invention relates to an insulating element for bolted facade constructions, wherein the insulating element is designed and dimensioned for positioning in the glass fold between the end faces of two adjacent insulating glass elements. Furthermore, the invention relates to a facade construction with such an insulating element, comprising a support profile with a screw and a janadenau built familiare pressure bar.
  • Screw-retained facade constructions use facade screws to screw a squeeze bar arranged on the outside of the facade to a basic profile arranged on the inside of the facade. Between the support profile and the pressure bar filling elements are held between sealing strips.
  • the filling elements are usually insulating glass, which consist of two or more individual glass panes, which are assembled via an edge bond between two glasses to an insulating glass element.
  • Façade screws are usually used at a distance between 250mm and 300mm to each other.
  • an insulating element is usually used. Due to the need for improved thermal insulation here mostly foamed insulation elements used. In some prior art curtain wall systems, foamed insulation elements have also been combined with plastic insulation strips to accomplish two purposes.
  • the Dämmstege were used to guide the facade outside arranged pressure bar. On the other hand, the Dämmstege were designed to guide the facade screws.
  • Hard foam bodies are considered to be unsuitable for insulating elements, since they are unable due to their strength to absorb variations in the width of the glass rebate.
  • Facade systems used today use soft foam bodies in the glass rebate area, which can no longer afford the guidance of the pressure strip and the facade screws to the required extent. This is because the consistency of a soft foam body is not suitable for adequate guidance. Therefore, the foam body used today complicate the installation of facade systems. Considering the run lengths of facades and taking into account that usually every 250mm to 300mm a facade screw is to attach, so this represents a significant disadvantage.
  • flexible foam bodies also have important advantages. So can soft foam body in the context of facade systems, often in the form of a modular system of individual components are built up, absorb filling thickness variants.
  • An insulating element made of soft foam can thus be used in conjunction with various filling elements, such as insulating glass elements of different thickness, since the different dimensions can be compensated by the easy deformability of a soft foam body.
  • an insulating element consisting of a soft foam body can also accommodate production-related filling thickness variants.
  • width variations of the glazing rebate can be absorbed by an insulating element as a soft foam body by compensating for dimensional variations of the filling elements and the frame.
  • insulating elements made of flexible foam are inexpensive to produce and have a better thermal insulation compared to Dämmstegen, which are usually made of extruded thermoplastic such as PVC, ATS, PP or PA.
  • the invention has for its object to provide a highly insulating thermal insulation element, which at the same time allows secure guidance of the facade screws and the pressure bar and a tolerance compensation perpendicular and parallel to the glass plane of the insulating glass elements.
  • the insulation element according to the invention for bolted facade constructions is designed and dimensioned for Positioning in the glass fold between the end faces of two adjacent insulating glass elements.
  • the insulating element has a core region which consists of hard foam, preferably made of PUR, PVC, XPS, EPS or phenolic resin.
  • At least two locking elements, which extend from the core area starting laterally outwards are dimensioned so that each locking element in the installed state in the glazing rebate touches the end face of one of the two adjacent insulating glass elements.
  • the insulating element is designed so that at a compression by 10% of the Dämmelements in the transverse direction of the cross section corresponding to the Glasfalzbreite acting in the contact area to the insulating glass elements, elastic restoring force from the deformation of the Dämmelements is less than the permissible shear force on the edge bond of the insulating glass element.
  • the dimensioning of the blocking elements of the insulating element is carried out so that, taking into account the standard dimensions a small distance of up to 2mm may exist to the end faces of the adjacent insulating glass elements, as long as it takes into account the usual tolerances of the support profiles, the format tolerances of the insulating glass elements and the temperature-induced strains a contact between the locking elements and the end faces of the adjacent insulating glass elements can come.
  • the usual tolerances of the support profile in metal construction are ⁇ 2mm
  • the usual format tolerances of the insulating glass elements are ⁇ 3mm
  • the length reduction of the support structure can be up to 0.5mm / m.
  • the Glasfalzamba extends in the direction of the distance of the mutually facing end faces of the adjacently arranged insulating glass elements.
  • the insulating element according to the invention is also suitable to provide the required tolerance compensation perpendicular and parallel to the glass plane, since the starting from the core area laterally outwardly extending blocking elements in contact with the respective end face of an insulating glass element in the contact area to the insulating glass element exert no elastic restoring force which exceeds the permissible shear force on the edge bond of the insulating glass element.
  • permissible shear force on the edge compound is between 0.005 N / mm 2 and 0.050 N / mm 2 , but usually between 0.005 N / mm 2 and 0.015 N / mm 2 .
  • the core region of the Dämmelement s a guide for facade screws, which is preferably designed in the form of a guide groove.
  • a guide for facade screws which is preferably designed in the form of a guide groove.
  • the insulating element has at least one flexible foam element comprising the blocking elements, wherein the at least one flexible foam element is arranged laterally on the core region of hard foam and connected to the core region and preferably adhered to the core region and / or attached and / or with the core region is extruded.
  • the at least one flexible foam element comprises the blocking elements.
  • the insulating element has at least one rubber-like element comprising the blocking element, wherein the at least one rubber-like element is arranged laterally on the hard foam core region and connected to the core region, preferably attached to the core region and / or adhesively bonded and / or coextruded therewith and wherein the at least one rubber-like element is preferably rubber or PVC.
  • this variant again provides a hard foam core region on which at least one rubber-like element is arranged, which obtains elasticity from the choice of material and not from the deformability of a foamed material.
  • the at least one flexible foam element or the at least one rubber-like element is additionally arranged on the end regions of the insulating element.
  • the end portions of the Dämmelements are those areas to be understood, which face in the installed position of the facade inside and the facade outside.
  • the entire insulating element made of hard foam and the blocking elements are designed so that they at least in the connection region to the core region of the Dämmelements a Have cross-sectional reduction with low bending cross-section, which causes sufficient elasticity of the locking elements.
  • a sufficient elasticity is understood to be a flexibility which is sufficiently great that, despite the use of hard foam, the insulating element can be compressed in the transverse direction of the cross section corresponding to the width of the rebate by 10% and in the compressed state the elastic restoring force acting in the contact area with the insulating glass elements from the deformation of the Dämmelements is less than the permissible shear force on the edge bond of the insulating glass element. In this way, despite the use of an insulating element made of hard foam with low compressibility, the insulating element can be compressed sufficiently far without the elastic restoring forces can lead to damage of the insulating glass elements.
  • tolerance compensation regions in at least one end region of the insulating element are also provided completely made of rigid foam, wherein the tolerance compensation regions are elastically deformable regions. This measure also represents a precaution in order to be able to ensure sufficient resilience of the hard foam insulating element with low compressibility.
  • the tolerance compensation areas are formed from sections of small cross-section and / or a relatively long free length, which can be achieved deformations that produce relatively low restoring forces.
  • the insulating element consists entirely of hard foam, wherein the material properties of the rigid foam are selected so that the following relationship is satisfied: ⁇ DE ⁇ ⁇ zul ⁇ 2 ⁇ B RV H SE where ⁇ DE in kPa is the compressive stress of the insulating element with a compression of 10% of the insulating element,
  • ⁇ zul in kPa denotes the permissible shear strength of the edge seal of the insulating glass pane and is preferably between 5 kPa and 50 kPa and particularly preferably between 5 kPa and 15 kPa;
  • B RV in millimeters represents the cross-sectional width of the edge seal in the direction of the rebate height
  • H SE in millimeters corresponds to the cross-sectional height of the locking element adjacent to the edge seal in the direction of the rebate height.
  • the cross-sectional width B RV of the edge seal in the direction of Glasfalzbreite is usually between 4mm and 6mm, so that even without knowledge of a concrete facade construction, the maximum possible compressive stress of Dämmements in the usual range of permissible shear strength of the edge of the insulating glass only in dependence on the geometry of Dämmelements and in particular the cross-sectional height of the blocking elements can be specified.
  • the above equation aims at the case that connect the blocking elements to the core region of the Dämmelements that a compliance of the locking elements does not result from the targeted provision of predetermined bending points. Instead, the above equation is directed to what force may result from the compression set of the foam, and relates it to the allowable shear force on the edge seal of an insulating glass panel.
  • a compression of 10% of the damping element since this is a value found in the data sheets of suitable materials.
  • the compressive stress at a compression of a test piece of 10% is determined according to the pre-standard DIN 4108-4, in which there are numerous references to specific standards for concrete materials.
  • the specified allowable shear strength of the edge seal refers to conventional bonding of the two or three adjacent glass sheets with an organic tack-sealant. In this case, silicone, polyurethane or polysulfide is usually used.
  • the insulating element consisting entirely of rigid foam is preferably designed such that it fulfills the following further relationship with a compression of 10% in the longitudinal direction of the cross section, corresponding to the direction of wind suction in the installed state: 2 ⁇ N mm ⁇ ⁇ DE ⁇ B DE ⁇ 5 ⁇ N mm
  • ⁇ DE is the compressive stress in N / mm 2 of the Dämnelements at a compression by 10%
  • B DE the width of the Dämmelements in the transverse direction of the cross section corresponding to the direction the Glasfalzumble called.
  • the width of the insulating body is in a range between 10mm and 20mm.
  • the above relationship describes the compressive stress of the insulating element in the wind suction direction in a rigid body made of hard foam, which also has no compliance arrangements in the windward direction according to the predetermined bending points shown above.
  • a damping body without compliance provisions has a compression of 10% to a relatively high restoring force.
  • the foam body thus acts under compression as a spring and thus reduces the Auszugswert the facade screws in wind suction.
  • the width of the insulating element in the transverse direction of the cross section ie in the direction of the glass folding width, as well as the compressive stress of the foam material in a compression should preferably be used as an additional measure 10% to lie within the above claimed area. If one uses the usual bandwidth for the width of the Dämmelements in the transverse direction of the cross section between 10mm and 20mm, then this results in a value for the Compressive stress ⁇ DE of the insulating element between 0.1 N / mm 2 and 0.5 N / mm 2 .
  • the facade construction according to the invention with the insulation element according to the invention comprises a facade inside support profile with a screw, as well as a janadenau built familiare pressure bar, wherein the insulating element is shaped so that it is displaced in the installed state in the direction of Glasfalz Abu relative to the screw and / or pressure bar.
  • the direction of the rebate height corresponds to the direction between the inside of the façade and the façade outside. If the insulating element and its integration in the entire facade construction allows relative displacement in the direction of the rebate height, no additional measures must be taken to provide sufficient elasticity in this direction of movement.
  • the entire insulating element or at least the core of the insulating element made of hard foam can be produced with low compressibility, since no compressibility in the direction of Glasfalzière is needed.
  • the insulating element has a fastening strip which can be inserted into the screw channel and slidable in the latter in the direction of the glazing rebate height.
  • the insulating element may have two fastening strips which run parallel to one another and are arranged such that they lie displaceably on the outside of the legs of the screw channel.
  • a portion of the insulating body with a length of 300m at a compression of 10% in the windward direction produces an elastic restoring force which does not exceed 750N and preferably does not exceed 650N.
  • This specification of the insulating body can be checked very easily, since only the mass including a support plate must be measured, which is required for a compression of the insulating body by 10% in the direction corresponding to the wind direction in the installed state. The measured mass can then be easily converted into the weight, which corresponds to the elastic restoring force of the insulating body.
  • the same or corresponding elements are denoted by the same reference numerals.
  • the insulating element is each shown so that in the installed position, the facade inside up and the facade outside is down.
  • insulating element 10 has a core portion 12 which consists of hard foam.
  • the hard foam body is dimensioned so that it ensures about 5mm Glasfalz Kunststoff in the installation position of the insulating element 10 in a facade construction.
  • the core region 12 is made of hard foam.
  • Particularly suitable materials are PUR (polyurethane), PVC (polyvinyl chloride), XPS / EPS (expanded polystyrene) or phenolic resin.
  • the preparation of the rigid foam body can be done by sawing individual plate strips, for example by sawing strips of extruded polystyrene.
  • the plate strips can also be sawn from block foam, for example XPS and PUR / PIR, or else with the aid of an injection molding process.
  • PUR / PIR can also be produced in strip casting. In the case of PVC foam will this usually sawn from a plate or extruded.
  • the dimensioning of the blocking elements of the insulating element is carried out so that, taking into account the standard dimensions a small distance of up to 2mm may exist to the end faces of the adjacent insulating glass elements, as long as it takes into account the usual tolerances of the support profiles, the format tolerances of the insulating glass elements and the temperature-induced strains a contact between the locking elements and the end faces of the adjacent insulating glass elements can come.
  • the usual tolerances of the support profile in metal construction are ⁇ 2mm
  • the usual format tolerances of the insulating glass elements are ⁇ 3mm
  • the length reduction of the support structure can be up to 0.5mm / m.
  • the locking elements 14 are in the embodiment according to Fig. 1 Made from a resilient material.
  • a resilient material for example, the Dämmelement after Fig. 1 made of hard foam / PVC, on which the blocking elements in the form of soft PVC lips were coextruded. Due to the low compressibility of the core portion 12 made of rigid foam, the soft and resilient locking elements have the function to abut the end faces of the adjacent insulating glass elements, however, in the case of a compression of the entire Dämmelements by 10% in the transverse direction of the cross section corresponding to the Glasfalzbreite an elastic restoring force on the To exert edge bond of the respective insulating glass element, which is less than the permissible shear force on the edge bond of the insulating glass element.
  • the insulation element after Fig. 1 can thus afford a tolerance compensation in the direction of arrow A.
  • Fig. 1 shown insulating element on a guide groove 16 which serves to guide the facade screws.
  • points in Fig. 1 shown insulating element still guide lugs 18 on the facade inside the correct positioning and centering of the Dämmelements on the screw (see Fig. 9 and 11 ) of a facade construction.
  • the embodiment according to Fig. 2 is essentially the same as after Fig. 1 , In contrast to this, the insulating element is following Fig. 2 However, an additional resilient element 20, which is either plugged onto the core portion 12 or coextruded with this.
  • the additional resilient element 20 has the advantage that in addition to a tolerance compensation in the transverse direction of the cross section of the Dämmelements corresponding to the direction of the arrow A now tolerance compensation in the longitudinal direction of the cross section of the Dämmelements corresponding to the direction of arrow B is possible.
  • a tolerance compensation in the direction of arrow B is used to compensate for tolerances of the filling thickness of the insulating glass elements of a facade construction or even deliberately provided Greungsdickenversionn.
  • the tolerance compensation in the direction of arrow A serves to compensate for variations in width of the Glasfalzes, which can be caused by dimensional variations of the filling elements and the frame and by thermal expansion.
  • the resilient element 20 may also be attached to the core region of the Dämmelements 10. Furthermore, the resilient element 20 may be made of flexible foam. Suitable materials for this purpose are in particular extruded foam rubber, cut or extruded PE foam or extruded PVC foam. In addition to the choice of a suitable material can also by selecting a suitable geometry the Elasticity of the resilient element 20 can be further adjusted, as in the embodiment according to Fig. 2 by providing a cavity 22.
  • each an insulating element 10 is made of hard foam.
  • the core 12 is made of hard foam.
  • the core 12 is located in the longitudinal direction of the cross section through rigid foam body on the side of soft foam body are arranged.
  • the soft foam body 24 are shaped so that they form the guide lugs 18 and locking elements 14.
  • the soft foam bodies 24 could be easily extruded from PE (polyethylene), sponge rubber or PVC.
  • the embodiment according to Fig. 4 differs from the one after Fig. 3 to the effect that the flexible foam body 24 now also extends in the end region over the front end of the core region 12 of the insulating element 10.
  • the soft foam body 24 may be formed in one piece.
  • this end face is the facade outside end face, which faces in the installed position to the pressure bar.
  • a guide groove 16 in the flexible foam body 24 is provided.
  • Fig. 5 goes one step further and now sees on both faces, ie both the outside of the facades as well as the inside of the facade, soft parts that allow sufficient elasticity and thus improved tolerance compensation in the direction B both to the pressure profile and towards the screw channel side.
  • the embodiments according to Fig. 3, 4 and 5 are thus different in that, in addition to the general flexibility of hard foam in the embodiment according to Fig. 3 an additional tolerance compensation transversely in the transverse direction according to arrow direction A is possible, while in the embodiment according to Fig. 4 an additional tolerance compensation in the transverse direction and in the longitudinal direction according to the direction of arrow B is possible and in the embodiment according to Fig. 5 the tolerance compensation in the direction of arrow B is further increased.
  • the embodiment according to Fig. 6 differs from the one after Fig. 3 to 5 to the effect that only soft tissue provided on the front side are arranged on the core region 12 made of hard foam.
  • the soft foam body 24 after Fig. 6 may be glued or plugged onto the core portion 12 of the Dämmelements and also be coextruded.
  • the soft foam body 24 are designed so that they have lateral guide rails 26 which embrace the core portion 12 of the Dämmelements 10, resulting in a better leadership.
  • guide approaches 18 are provided which the in 6 and 7 indicate enclosed screw 30 of the basic profile of a facade construction. This in Fig. 6 shown insulating element also has a guide groove 16.
  • the fully elastic region a in the longitudinal direction of the cross section in the direction of the glass fold regions may in this embodiment preferably be between 3 mm and 6 mm.
  • a lateral shield member 28 which may be provided on one or both sides of the soft foam body 24 and may also be provided with a blocking element.
  • Fig. 7 illustrated variant, which additionally represents the tip 32 of a facade screw just before entering the guide groove 16 a design was chosen in which a symmetrical structure is used.
  • Core area 12 is provided on both sides with guide grooves 16, which should facilitate the screwing of facade screws.
  • the soft foam body arranged on the inside of the facade is provided with a centering nose 34, which engages in the screw channel 30, indicated by broken lines, of an associated facade structure and correctly centers the insulating element 10 in this way relative to the base profile.
  • each core region of foam were combined with arranged thereon elements of a soft material, is in the embodiment according to Fig. 8 exclusively rigid foam used.
  • Locking elements 14 formed, which also consist of hard foam.
  • the blocking elements 14 are shaped such that they each have a small bending cross-section b, which, in spite of the largely incompressible material of the hard foam, ensures adequate elasticity of the blocking elements 14 in the direction of arrow C. In this way, also in the embodiment according to Fig.
  • the embodiment according to Fig. 8 But also provides a tolerance compensation in the direction of arrow B before.
  • an arcuate portion 36 is provided with a relatively small wall thickness, which rests on the screw 30 and also provides for a certain elasticity in the direction of arrow B.
  • the connection between the insulating element 10 and the pressure bar 40 is configured by elastically bendable arms 38, which also in the context of flexibility allow the arms 38 a certain compensating movement in the direction of arrow B in the direction of Glasfalz altar.
  • the required elasticity to the insulating glass elements not achieved by the selection of the material, but by the special geometry of the Dämmelements 10.
  • Fig. 9 shows a further embodiment of the invention, in which the insulating element in the illustrated facade construction also consists exclusively of rigid foam, but whose material properties are adjusted so that the locking elements 14 are sufficiently compressible and generated in the event of compression restoring force of the Dämmelements not the permissible shear force exceeds the edge bond 48 of the insulating glass element 50.
  • the insulating glass element 50 consists of three glasses 46, each having between them an edge assembly 48 which is configured in a conventional manner. This means that in Fig.
  • width B RV of the edge bond which is usually between 4mm and 6mm, and the edge bond itself is carried out in the usual way with a bonding of the adjacent glass sheets 46 with an organic adhesive sealant, usually silicone, polyurethane or polysulfide is used.
  • an organic adhesive sealant usually silicone, polyurethane or polysulfide is used.
  • the maximum shear strength of the compound reached here is about 0.005 N / m 2 to 0.015 N / m 2 as fatigue strength.
  • the blocking elements 14 generally have a cross-sectional width H SE of 2 mm to 4 mm. However, depending on the material chosen for the insulating element, lower values for H SE may also be chosen to meet the relationships given below. Due to the choice of material and the choice of the cross-sectional height of the locking elements is also apparent in the embodiment Fig. 9 a possible tolerance compensation in the direction of arrow A. In addition, too a tolerance compensation in the direction B possible, as is apparent from the design of the Dämmelements 10 on the one hand and the screw 30 of the support section 52 on the other.
  • the insulating element 10 is provided with guide lugs 18, which laterally surround the legs of the screw 30 and can perform a tolerance compensation in the direction of the Glasfalzdorf in the direction of arrow B.
  • FIG Fig. 10 An alternative design, which can also provide a suitable tolerance compensation, is shown schematically in FIG Fig. 10 shown.
  • existing guide lugs 18 of the Dämmelements 10 additionally provided a guide rail 42 which is dimensioned to engage in the screw, but is slidably held therein in the direction of arrow B.
  • FIG. 11 shows another possibility of tolerance compensation in the direction of arrow B.
  • no play is provided between the insulating element 10 and the screw channel, so that tolerance compensation in this area is possible only via the elasticity of the insulating element and the one-piece inner seal 54 laid over the screw channel 30 ,
  • a game between the pressure bar 40 and the facade outside, front end of the Dämmelements 10 is specifically provided so that the in Fig. 11 shown tolerance compensation in direction B is possible.
  • each in addition to the possible compression of the Dämmelements a tolerance compensation in the direction B of Glasfalzdorf of the profile, ie in the direction between façade inside and outside façade provide, but it is also possible, the tolerance compensation in direction B exclusively on the choice of suitable geometry and material properties produce the Dämmelements.
  • the foam made of rigid foam after Fig. 12 has nominal dimensions, so that it rests substantially free of play both between the pressure bar 40 and the screw 30, as well as with locking elements 14 on the edge assembly 48 of the insulating glass elements 50.
  • the insulating element according to the embodiment according to Fig. 12 a sufficient tolerance compensation in the direction of arrow B, that can afford in wind direction, defined conditions must be met in terms of the choice of material of the hard foam of the Dämmelements, but also the geometry of the Dämmelements.
  • the compressed foam body of the Dämmelements 10 acts due to its elastic restoring force as a spring which must not reduce the Auszugswert the facade screws in wind suction recording too much.
  • the restoring force of the insulating element per distance interval of the facade screws corresponds to the compressive stress of the insulating body multiplied by the product of the width of the insulating body and the screw spacing.
  • Façade screws are usually screwed in every 250mm or 300mm so that the less favorable case of 300mm can be assumed here.
  • Extent values of the facade screws are usually set at 3000N. Assuming now that the original Auszugswert the facade screws can reduce by wind uptake of the screws by half or even 2/3, so in the worst case, only a Auszugswert the individual facade screws is available, which is between half and a third of the above value of 3000N. The restoring force of the compressed insulating element must therefore not be greater than the remaining extraction value of the screw under wind suction uptake of 1000N to 1500N.
  • ⁇ DE ⁇ F screw A DE where F screw designates the residual value of the façade screw remaining in the case of wind suction absorption and A DE the cross-sectional area of the insulating element perpendicular to the direction of loading B (see Fig. 12 ) per facade screw interval, and ⁇ DE the compressive stress in N / mm 2 of the insulating element at a compression of 10%.
  • the cross-sectional area of the insulating element is the product of the width B DE of the insulating element in the transverse direction of the cross-section and the length of a section of the insulating element corresponding to the distance between two successive facade screws of 300mm.
  • the width B DE corresponds to the Glasfalzumble minus the double Glasfalz Kunststoff, which is usually 5mm. If these values are included in the above equation, the result for the product of the compressive stress of the insulating element ⁇ DE in N / mm 2 at a compression of 10% and the width B DE of the insulating element in the transverse direction of the cross section is a value range between 3, 33 N / mm and 5 N / mm. Since a lower compressive stress of the insulating element is harmless, an insulating element made of hard foam should therefore fulfill the following relationship: 2 ⁇ N mm ⁇ ⁇ DE ⁇ B DE ⁇ 5 ⁇ N mm
  • the width of Dämmelements B DE is here as shown in FIG Fig. 12 the width of the core portion 12 is set, which absorbs the compression and correspondingly develops the elastic restoring force.
  • the force from the compression deformation of the foam corresponds to the compressive stress ⁇ DE of the foam material at a compression of 10% multiplied by the cross-sectional area of the blocking elements.
  • the cross-sectional area of the blocking elements can be any length of the Dämmelements in the direction perpendicular to the plane of the
  • Fig. 12 be accepted, since this size can be shortened out of the mathematical relationships anyway.
  • the shear surface of the edge seal of the insulating glass elements is located on both sides of the edge seal and therefore must be set at a factor of 2.
  • the shear surface thus corresponds twice to the width B RV of the bond of the edge bond 48 multiplied by the arbitrary length perpendicular to the plane of the drawing Fig. 12 which, as already explained above, can be cut out of the equations again.
  • the usual width of the gluing of multi-pane insulating glass is between 4mm and 6mm.
  • the permissible shear strength of the edge bond of insulating glass elements lies within a fatigue strength between 0.005 N / mm 2 and 0.050 N / mm 2 .
  • the most frequently mentioned shear strengths in the literature are between 0.005 N / mm 2 and 0.015 N / mm 2 .
  • the insulating element consists of hard foam or semi-hard foam, at least in the core area, whereby a good management of the facade screws and positioning of the pressure bar is guaranteed.
  • various measures are described in the various embodiments. These range from the attachment and shaping of soft compensation elements on the core region of the Dämmelements over the provision of predetermined bending points to the combination of the optimization of defined geometry sizes of the Dämmelements with the selection of suitable materials with respect to the compressive stress at a compression of 10%, as Standard size for organic insulating materials is measured and tabulated.
  • the required tolerance compensation can be created in order to prevent in particular over-demands on the edge bond of the glass, but preferably also to achieve a limitation of the spring action in the screw-length direction.

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EP12160722.0A 2012-03-22 2012-03-22 Éléments d'isolation pour structures de façade vissées ainsi que structure de façade Withdrawn EP2642039A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108264A1 (de) 2014-06-12 2015-12-17 Ensinger Gmbh Wärmeisolierendes Abstandhalterprofil
EP3029211A1 (fr) * 2014-12-03 2016-06-08 SCHÜCO International KG Baguette d'isolation pour un profile porteur
DE202023102531U1 (de) 2023-05-10 2023-06-20 Wolfsburger Bedachungsgesellschaft mit beschränkter Haftung, Hanky & Co. Dämmstoffplatte

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Publication number Priority date Publication date Assignee Title
DE29918219U1 (de) * 1999-04-09 2000-08-17 Raico Bautechnik GmbH, 87746 Erkheim Fassade für ein Niedrig-Energiehaus
DE20319978U1 (de) * 2003-02-28 2004-07-08 Raico Bautechnik Gmbh Fassade
DE202009011906U1 (de) * 2009-09-02 2011-01-20 Raico Bautechnik Gmbh Dämmelement für eine Pfosten-Riegel-Fassade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29918219U1 (de) * 1999-04-09 2000-08-17 Raico Bautechnik GmbH, 87746 Erkheim Fassade für ein Niedrig-Energiehaus
DE20319978U1 (de) * 2003-02-28 2004-07-08 Raico Bautechnik Gmbh Fassade
DE202009011906U1 (de) * 2009-09-02 2011-01-20 Raico Bautechnik Gmbh Dämmelement für eine Pfosten-Riegel-Fassade

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108264A1 (de) 2014-06-12 2015-12-17 Ensinger Gmbh Wärmeisolierendes Abstandhalterprofil
EP3029211A1 (fr) * 2014-12-03 2016-06-08 SCHÜCO International KG Baguette d'isolation pour un profile porteur
DE202023102531U1 (de) 2023-05-10 2023-06-20 Wolfsburger Bedachungsgesellschaft mit beschränkter Haftung, Hanky & Co. Dämmstoffplatte

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