• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    The invention relates to a composite construction (1) comprising a glass pane (2) and a frame construction (4), wherein the glass pane (2) is peripherally connected to a flat side (5) via an adhesive (6) with one connectable to the frame construction (4) Coupling element (3) is connected, wherein between an end face (9) of the glass pane (2) and the coupling element (3) at least one blocking means (10) is not adhesively attachable, wherein between the blocking means (10) and the coupling element (3) a Separation layer (11) is provided, and a method for dimensioning such a composite construction.
    公开号:AT511373A1
    申请号:T5882011
    申请日:2011-04-27
    公开日:2012-11-15
    发明作者:Werner Dipl Ing Hochhauser；Wolfgang Ddipl Ing Winter；Klaus Dr Ing Kreher
    申请人:Univ Wien Tech；
    IPC主号:
    专利说明:

    1 50162 / AG Vienna University of Technology
    The invention relates to a composite construction comprising a glass pane and a frame construction, wherein the glass pane is peripherally connected to a flat side via an adhesive with a coupling element which can be connected to the frame construction, and to a method for dimensioning such a composite construction.
    Glass panes have been installed in walls, ceilings and roofs for centuries. In general, the glass sheets are used in frames, which are then connected to the respective wall or ceiling construction or are themselves part of the support construction. Different materials and geometries are used for the frames (from wood to plastic and cast iron to glass fiber reinforced profiles). To connect the glass sheet to the frame, the disks can be clamped in the frame using blocks, but it is also known a peripheral bonding of the disk.
    Contemporary architectural demands for filigree glass constructions, a structural-physical optimization and not least for the building material wood, which is becoming more and more important in times of environmental change, are taken into account with the use of such wood-glass composite constructions.
    The Joining Partner Wood, in terms of thermodynamics, probably has the greatest advantages for composite constructions with glass. However, this advantage is offset by the great disadvantage of the low stiffening potential which lightweight materials such as wood have. Correspondingly, this problem can be addressed with glued-in glass panes, which can then be used in conjunction with wood for stiffening buildings or for vertical load transfer in the form of wood-glass composite supports. 2 50162 / AG Vienna University of Technology
    Recent developments in the field of adhesive technology make it possible today to apply wood-glass composite structures in structural engineering. Due to its very good material properties, the joining partner glass can now also be used as a supporting element in addition to the advantageous transparent and structural-physical possibilities.
    However, in order to be able to exploit the great potential of glass panes as load-bearing elements in composite panes, carriers or plates, it requires a uniform application of load via connecting means whose hardness must be below that of the glass pane. It is essential that the glass pane does not come into contact with any materials that are harder than the glass pane itself in order to be able to exclude surface damage as far as possible. Adhesives meet this requirement and also ensure a uniform load entry into the glass, take over sealing functions and can compensate for thermal or hygric differential movements. The use of rigid adhesives lends itself to larger load levels.
    It should be noted in particular that the load transfer in extreme situations (earthquake, impact of vehicles, etc.) to be removed horizontally (or vertically to the system axis) can assume higher values than due to wind loads. Composite structures designed as load-bearing elements must be sized to accommodate such load peaks.
    From AT 502 470 A1 it is known to connect a glass pane on the circumference of a flat side with an adhesive on a coupling element that can be connected to the frame construction. It is known in particular from this document to carry out such coupling elements as toothed coupling strips in order to narrow them by intermeshing two coupling strips. 3 50162 / AG Vienna University of Technology
    Obtain view widths of the stems, whereby the edge strips can be covered after attachment of the composite element to the support structure. The glass pane can preferably be glued dust-free at the factory with the Koppeielement or the coupling strip. After a corresponding curing time of the adhesive, the finished wood-glass composite element can be delivered to the site and mounted by simple screwing from the outside on a wooden frame construction.
    The adhesive between the coupling strip and the glass sheet is usually carried out in the prior art by means of silicones. The connection of the coupling strip with the frame construction generally takes place by means of self-piercing screws, which are introduced centrally into the overlapping area between the coupling strip and the frame construction.
    However, such a composite construction generally allows too little load transfer of attacking horizontal forces per linear meter of the glass to meet demands of modern architecture. There is therefore a need to provide wood-glass composite structures that allow a higher load transfer horizontally attacking forces.
    It has long been known from the prior art, instead of the peripheral adhesive between the glass and the coupling element to provide one or more Verklotzungsmittel, which have the purpose to clamp the glass in the frame. For this purpose, a gap is left between the end face of the glass pane and the coupling element. The blocking means is introduced into this gap.
    However, these blocking agents are generally not chosen to ensure the highest possible load transfer but to remove the weight of the glass pane and to clamp the glass pane as gently as possible into the coupling element. It can also be used on both sides adhesive materials to avoid harmful movements of the glass as possible.
    However, such Verklotzungsmittel have the distinct disadvantage that they adhere to both the coupling element and on the front side of the glass sheet. Thus, not only compressive forces, but also shear and tensile forces are transmitted. A load from direct tensile forces, but should be avoided for reasons of safety of the glass in any case. This is not a problem in conventional constructions, since conventional constructions are not intended for horizontal load transfer - a direct tensile load therefore does not occur.
    In addition, there is no possibility of the prior art to normatively calculate and dimension wood-glass composite constructions. Although the standardization series of ÖNORM B 3716 offers the possibility of dimensioning glass constructions, glass composite constructions with other joining partners such as wood are not discussed.
    In order to be able to follow the technical developments and to make these new developments accessible to the market, it is necessary to be able to calculate the bearing behavior of the construction elements. Without this possibility even the best construction can not be statically calculated by the skilled person and taken into account statically. In accordance with the valid standards, suitable design concepts must define safety criteria in order to ensure safe use of the wood-glass composite construction method.
    Existing spring models for the calculation of wood-glass composite constructions are based on the one hand solely on a modeling of the deformation of the adhesive used due to the occurring 50 50162 / AG Vienna University of Technology
    Shear forces (calculation of the shear stress in the adhesive), and on the other hand on a modeling of the compression of the blocking means due to the compressive forces occurring (calculation of the compressive stress in the blocking agent). The head displacements which can be calculated via existing spring models, which are the decisive ones
    Represent fitness for use, resulting exclusively from the sliding of the adhesive or the compression of the blocking agent. This may be true for very soft adhesive systems in which the deformations of all other component components are negligibly small compared to those of the adhesive systems, but not for very rigid blocking agents such as epoxy resins or semi-elastic adhesives such as acrylates.
    The technical object of the present invention, therefore, is to overcome the drawbacks of the prior art constructions and to provide a composite structure having increased horizontal or vertical load-carrying capability, which can be readily produced in high volumes without undue expense, and For this construction, to provide a method for sizing and dimensioning, which only allows the person skilled in the art to manufacture the composite construction according to the invention in a simple manner while maintaining predetermined safety threshold values.
    The object of the invention is achieved in that at least one blocking agent is not adhesively attachable between an end face of the glass pane and the coupling element.
    For this purpose, a gap for introducing the Verklotzungsmittels be provided between the end face of the glass sheet and the coupling element. Due to the non-adhesive introduction of the blocking agent, a pressure transfer between the coupling element and the glass pane is made possible and at the same time a transmission of tensile forces and shear stress is excluded.
    Thus, the glass pane is primarily subjected to pressure, which makes it possible for the first time to use the glass pane as a stiffening structural element in accordance with the material.
    It can be inventively provided that between the blocking means and the coupling element or between the blocking means and the end face of the glass pane, a release layer is provided to achieve that between the coupling element and the end face of the glass sheet no tensile forces (or shear stresses) are transmitted. This separating layer can be embodied in particular as an adhesive tape, plastic film, metal foil, paper, textile fabric or the like. The thickness of the separating layer plays no role, its property is essential to prevent the blocking agent adhering to the coupling element. For very thick separating layers, however, the spring stiffness of the separating layer would have to be considered for the dimensioning.
    Preferably, the separating layer may be attached to the side facing the coupling element of the Verklotzungsmittels, since the other, the glass pane facing side of the Verkootzungsmittels can not abut the glass surface of the entire surface, since the glass pane may have irregular edges (especially when using float glass with broken Edge).
    The elasticity of the blocking agent and the shear stiffness of the adhesive may be adapted to the particular application and the expected horizontal forces to be transmitted. Thus, for example, for a thin sheet of glass, a more resilient blocking means than for a thick sheet of glass can be chosen to relieve the printed diagonal and thus, e.g. to reduce the risk of buckling. 7 50162 / AG Vienna University of Technology
    The blocking means may preferably be formed so that it has a trapezoidal cross section, wherein the base of the trapezoid, that is the longer side, facing the coupling element.
    The coupling element can be designed in particular as a coupling strip. Coupling element and / or frame construction may be made of wood, plastic, or other materials.
    For dimensioning this composite construction according to the invention, the invention further extends to a method which comprises the following steps: i. Determination of the effects for disc and plate loading as well as for climatic loads; ii. Determination of geometry and material parameters of the construction elements; iii. Calculation of equivalent spring stiffness of the construction using a simplified spring model; iv. Determination of load distribution on shear field and pressure diagonal; v. Calculation of the head shift of the glass pane, the shear stress in the adhesive center and the compressive stress in the blocking means using the simplified spring model; vi. Check if all calculated values lie within predefined safety limits; vii. Check whether resistance values of other component parts (glass, connecting means, etc.) are sufficient for the effects due to shear stress in the adhesive and compressive stress in the blocking agent.
    The method according to the invention can be based, in particular, on a spring model, which is a first branch for modeling the technology
    Shear stress of the adhesive and a second, parallel branch for modeling the compressive stress of the blocking agent comprises.
    It can be provided, in particular, that spring elements for modeling the following effects are provided for modeling the shear stress of the adhesive: i. Deformation of the adhesive; ii. Deformation of the coupling element; iii. Deformation of the connecting means; iv. Deformation of the frame construction; v. Deformation of the glass pane.
    Furthermore, it can be provided that spring elements are provided for modeling the compressive stress of the blocking means for modeling the following effects: i. Deformation of the glass sheet; ii. Deformation of the adhesive and the blocking agent; iii. Deformation of the connecting means; iv. Deformation of the coupling element; v. Deformation of the frame construction; vi. Deformation of frame joints of the frame construction.
    In particular, the invention also extends to a computer program which implements a method according to the invention, and to a composite construction which has been dimensioned according to a method according to the invention.
    Further features of the device according to the invention and of the method according to the invention can be found in the claims, the description and the figures.
    technical University of Vienna
    The subject invention will now be described in detail with reference to exemplary embodiments. 1 a shows a schematic view of an exemplary embodiment of a wood-glass composite construction according to the invention;
    Fig. 1 b: a schematic view of a detail of an alternative
    Embodiment of a wood-glass composite construction according to the invention;
    Fig. 2a shows the cross section along the line II-II in Fig. 1b;
    2b shows the cross section through an inventive blocking agent.
    3a shows a schematic representation of the shear forces in a composite construction according to the invention;
    3b: a schematic representation of the compressive forces on the
    Blocking agent in a composite construction according to the invention;
    Fig. 4: the simplified spring model for use in a
    Embodiment of the dimensioning method according to the invention;
    5 shows a schematic flow diagram of an embodiment of the dimensioning method according to the invention;
    Fig. 6: a schematic representation of the design diagram for
    Use in the method according to the invention.
    Fig. 1a shows a schematic view of an embodiment of a composite construction according to the invention 1. The composite structure 1 comprises a glass sheet 2 and at least one coupling element 3. The coupling element 3 has a projection 8, at least in an area {for example in the area in which the Blocking means are attached) or extends circumferentially beyond the edge of the glass pane 2 in order to connect the coupling element 3 to a frame construction 4. For this purpose, the coupling element 3 has several 10 50162 / AG Vienna University of Technology
    Connecting means 7, for example screws, pins or nails, with which the coupling element 3 can be attached to the frame structure 4.
    The frame structure 4 further comprises one or more connecting means in the form of frame joints 15 in their corners. Between the glass pane 2 and the coupling element 3 there is a joint 20 for introducing the blocking means 10. In the region of the blocking means 10, a higher number of connecting means 7 may be provided.
    The glass sheet 2 is attached to the coupling element 3, or to the individual components of the coupling element 3, in the known manner, in particular by an adhesive 6 in the form of an adhesive or the like. The adhesive 6 is circumferentially mounted on the periphery of a flat side 5 of the glass.
    In addition, the projection 8 of the coupling element 3 is designed such that it protrudes beyond the plane of the glass pane 2, as is clearly visible in section II-II in Fig. 2a. This makes it possible to attach not adhesively between the end face 9 of the glass pane 2 and the projection 8 of the coupling element 3, a blocking means 10 which connects the glass pane 2 with the coupling element 3. Thus, a blocking of the glass pane 2 takes place on the coupling element 3, which is suitable to weiterzuieiten compressive stresses, but does not pass on tensile and shear stresses.
    1b shows a schematic view of a detail of an alternative embodiment of a composite construction 1 according to the invention. In this case, the glass pane 2 consists of circumferentially broken float glass, which is indicated by an irregular edge course. Accordingly, the joint 20 is irregular. When inserting a solid blocking agent, such as a wedge, this would lead to uneven point loading of the glass sheet. For this reason, as blocking agent 10, a subsequently hardening wet adhesive, preferably an epoxy resin adhesive, is inserted, which conforms to the irregular edge of the glass pane and uniformly couples in the forces to be transmitted. Between the Verklotzungsmittel 10 and the coupling element 3, a release layer 11 is provided, which prevents the Verkootzungsmittel 10 adheres to the coupling element 3.
    Fig. 2a shows the cross section along the line II-II in Fig. 1b. The composite construction 1 comprises a glass pane 2 with a flat side 5 and an end face 9, as well as a coupling element 3 and a frame construction 4. The flat side 5 of the glass pane 2 is attached to the coupling element 3 via the adhesive 6, in particular adhesively bonded thereto. This bond is elastic or semi-elastic and allows a certain movement of the glass pane 2 with respect to the coupling element 3. The coupling element 3 is connected via the connecting means 7 with the frame joint. Furthermore, in the region of this connection, the coupling element 3 has a projection 8 which extends beyond the edge of the glass pane 2 as well as beyond the plane of the glass pane 2 during execution of the block according to FIG. 2b. This creates the possibility of inserting a blocking means 10 between the end face 9 of the glass pane 2 and the coupling element 3. This blocking agent 10 may preferably be an adhesive, for example an epoxy adhesive. In order to prevent the blocking means 10 from adhering to the projection 8 of the coupling element 3, a separating layer 11 is provided in this exemplary embodiment which can be used, for example, as an adhesive tape, plastic film, metal foil, paper,
    Textile fabric or the like is executed. This prevents that tensile stresses or shear stresses transferred to the glass. The blocking means 10 can thus transmit exclusively compressive stresses on the glass pane 2.
    Fig. 3a shows a schematic representation of the shear stresses 18 in the composite structure according to the invention upon initiation of a horizontal force 12 50162 / AG Technical University Vienna 17. It forms shear stresses 18 between the coupling element 3 and the glass 2, in the direction of the schematically drawn arrows run. These shear stresses 18 act directly on the adhesive 6 a.
    Fig. 3b shows a schematic representation of the compressive forces 19 in the composite construction according to the invention upon initiation of a horizontal force 17. It form compressive forces 19 between the coupling element 3 and the glass pane 2, which extend in the direction of the schematically drawn arrow. These pressure forces 19 act directly on the blocking means 6 and can be divided in the manner shown in horizontal and vertical components.
    Fig. 4 shows the simplified spring model 12 for dimensioning or calculation of the composite construction according to the invention by the action of a horizontal force 17. It is distinguished between a branch 13 for modeling the shear stress of the adhesive 6 and a parallel branch 14 for modeling the compressive stress of the Verklotzungsmittels.
    To model the shear stress, the following components are taken into account, wherein the spring stiffnesses C are area-related and the units have N / m1 2: 1
    The sliding of the adhesive 6 along the coupling element 3 is taken into account by the following formula: CT, i = equivalent spring stiffness, Gt the shear modulus along the adhesive 6, BT the width of the adhesive 6, and dT the thickness of the adhesive 6: ··· 2. The sliding of the coupling element 3 along the frame structure 4 is taken into account by the following formula, where CK1, i is an equivalent spring stiffness, Gkl is the shear modulus of the coupling element 3, b is the width of the coupling element 3 and dKL denotes the thrust-loaded thickness of the coupling element 3:
    Gkl * bKL 3. The deformation of the connecting means 7 along the coupling element 3 is taken into account by the following formula, where m denotes the number of connecting means per unit length, Kserdas displacement module per shear joint and connecting means, n the number of connecting means of the coupling element and I the length of the coupling element :
    In this formula, the density of the frame construction pbsh and the density of the coupling element rKL are averaged to calculate Kser. The symbol dvM denotes the diameter of the lanyard according to ÖNORM EN 1995-1-1. 4. The sliding of the frame structure 4 along the coupling element 3 is calculated by:
    where Cr, i is an equivalent spring stiffness, GR is the shear modulus of the frame construction, bR is the width of the frame construction, and dR is the thickness of the frame construction. 5. The distortion of the glass sheet 2 is calculated from the following equation, where Cg, y is an equivalent spring stiffness, Gg the shear modulus and tG the thickness of the glass sheet and Lax.e denotes the larger of the two dimensions (length, width) of the glass sheet:
    max.G
    The description of the deformation possibilities of the individual components by spring stiffness now allows a series connection of all involved springs:
    and thus a recalculation of all system elasticities in an equivalent spring stiffness of the adhesive 6 due to shear stresses and thus an introduction of an equivalent shear modulus:
    T
    Similarly, the following components are taken into account in the spring model for modeling the compressive stress of Verklotzungsmittel 10. These formulas use the unit N / m for the spring stiffnesses C: 1. The compression of the glass sheet is calculated by an equivalent spring stiffness CGiE:
    15 50162 / AG Vienna University of Technology where Eg is the modulus of elasticity of the glass pane, to the thickness of the glass pane, bD, G is the width of the printed diagonal (approximated by leff / 4, with l ^ ff being the smaller value of length and height of the glass pane) and lG , hG indicate the length and height of the glass pane. 2. Glide of adhesive and buckling compression are modeled by equivalent parallel spring stiffnesses CT, q and Cc, GT being the shear modulus of the adhesive across the bondline, Ec the modulus of elasticity of the blocking agent, I0 the length of the blocking agent, dc the thickness of the blocking agent , bc, G and bc, H denote the width of the blocking agent on the glass and wood sides, and bT, dT denote the width and thickness of the adhesive:. br (; + bcll £ * / * t.t »- £ i "
    Cc = nC lC 2 dr 3. The deformation of the connecting means transversely to the coupling element 3 is calculated by the equivalent spring stiffness CvM.q, where nc is the number of connecting means within the load propagation angle of the coupling element, pbsh and ρκι_ the density of the frame structure and the coupling element, and dvM denotes the diameter of the bonding agent:
    V / -13 d-VM
    LvM.q - nc * Kser 'nc * ^ / PüSlI * PtiL t ~ ^ T 4. The sliding of the coupling element transverse to the longitudinal axis is described by the following equivalent spring stiffness Ckla, where Gkl is the shear modulus of the coupling element, lc is the length of the blocking means, bKi_ the width of the coupling element, dKi_ the thickness
    16 50162 / AG
    Vienna University of Technology of the coupling element, dt the thickness of the adhesive, and bCin the wood-side width of the blocking agent denotes:
    5. The compression of the coupling element 3 is described by the following equivalent spring stiffness Cku, where EK1 is the modulus of elasticity, lc is the length of the blocking means, b is the following: L is the width of the coupling element and bcH is the wood-side width of the locking means: ^ Ekl * Gc + ^ kl) * bc, n 6. The sliding of the frame structure 4 transverse to the longitudinal axis is calculated by the equivalent spring stiffness CR, q, where Gr is the thrust modulus Frame design, lc Designate length of a blocking means, bR width and dR thickness of a frame structure:
    The bending of the frame structure 4 (consisting of posts and bars) is described by the equivalent spring stiffness Cr, b, where I is the length of the post, E is the modulus of elasticity of the frame construction, and ec is the distance between the center of the blocking means and the glass edge. This formula can be derived from the formula for the bending line of a hinged single-load carrier asymmetrically loaded with a single force:
    3 * i * E * l lltJt ~ c *. {ec - IV
    Vienna University of Technology 8. The expansion of the frame structure 4 is described by the equivalent spring stiffness CR, E, denoting the elastic modulus of the frame construction, dR the thickness of the frame construction, bR the width of the frame construction and hG the height of the glass sheet:
    9. The deformation of a fastener in the frame corner, in particular the frame joint 15, is modeled by the equivalent spring stiffness Crg, where nVM, RG is the number of fasteners in the frame corner, dVM is the diameter of the Connecting means and pbsh denoting the density of the frame construction:
    'RG' nVM, RG * K, ser nVM, RG * Pbsh 1.5 * dyM 23
    From these spring stiffnesses for the spring model of the pressure diagonal, the equivalent spring stiffness Cc, eq of the horizontally and vertically acting blocks can be calculated: - r, (1 1 1 - Λ: - r + f 1 "r U-GfCL.q lKL, s
    Cr, 2 + Cc CG ,; C 1111 + 7 = - + - + -F- + 7 ^ - +
    -SG -Γ
    In this formula, the index i stands for " V " or Ή ". Cc, eq, v = Kv describes the spring stiffness of the vertically acting pad, which is e.g. due to different spring stiffness of the post or beam bending of Cc, eq, H = KH, the spring stiffness of the horizontally acting block, deviates in non-square glass, resulting in equivalent elastic moduli Eäq.i for the horizontally and vertically acting blocks: «« φ φ φ φ φ • β φ «« · · · · • · · · ·
    18 50162 / AG
    Vienna University of Technology Using the following formula, the system stiffness of the shear field can be calculated by simplifying the assumption of the same spring stiffnesses of shear bonding along and across the joint:
    The system stiffness of the printed diagonal can be calculated using the following formula:
    The variable ec is also shown in FIG. 1a for the distance between the glass edge and the center of the pad, which is located on the shorter side of the glass. The system stiffness of the shear field KT and the system rigidity of the pressure diagonal Kc can now be used to form a relationship between the attacking horizontal force H and the head displacement of the glass pane uk. The load distribution on shear field and pressure diagonal can be determined: H Uk * (KSchub ^ diagonal) where Kschub for Kt and Koiagonaie for Kc are determined by the material-dependent system stiffnesses calculated above. This equation is also indicated in FIG. 4, where KSChub is denoted by Κτ and KDiagonaie is denoted by Kc. The symbol kgeo.i in Fig. 4 stands for all factors except k in the equation for Κτ and kgeo, 2 for all factors except Kv and Kh in the equation for Kc.
    5 shows a schematic flow diagram of an embodiment of the dimensioning method according to the invention. First, the 19 50162 / AG Vienna University of Technology
    Actions for disc and plate stresses as well as for climate loads determined and the material geometries and material parameters selected. These include in particular the modulus of elasticity of the blocking, the shear modulus of the bond, the block length, and the horizontal force to be derived. Thereafter, as described above, the equivalent spring stiffnesses are calculated, the load distribution on the shear field and the printed diagonal is determined, and the values for the expected head displacement, the shear stress in the adhesive 6 and the compressive stress in the blocking means 10 are calculated therefrom. Thereafter, the effects are determined by shear stresses in the adhesive and compressive stresses in the blocking agent on all other components components. If all values are in the safe range when compared with given safety barriers, it is checked whether the resistance values of other component components are sufficient for the effects due to shear stress in the adhesive and compressive stress in the blocking agent. If this is the case, then the sizing is completed, otherwise the material parameters are adjusted and the process starts all over again.
    To simplify this process for the practitioner, it is envisaged to pre-calculate a two-dimensional design diagram, which simplifies the assumption that the equivalent spring stiffness of the horizontally acting blocks Kh is equal to the equivalent spring stiffness of the vertically acting blocks Kv.
    The sought sizes, ie the head displacement u, the shear stress in the adhesive and the compressive stress in the blocking agent are functions of the horizontal force H and the above calculated equivalent elasticity or shear moduli E eq (E) or G aq (G): {u, I, Qc} = / (H, E, G)
    However, it is not possible to create a diagram in two axes, from which the required quantities can be read directly. The number of 20 50162 / AG Vienna University of Technology
    However, variables can be reduced to 1 if H is set to constant 1kN / m and only the ratio Eäq / Gäq is taken into account. Thus, on the abscissa, the value of Eq / Gaq can be plotted, and on the ordinate a Hiifsize using G = 1N / mm2 and H = 1kN / m. In a further step, the desired quantities can then be determined from this auxiliary quantity, where: u = f {E: G) x ku with ku = / (G, H) = const. r = / (E: G) x kT with kt = f {G, H) = const. oc = / (E: G) x ka with kG = / (G, H) = const.
    The curves for determining the head displacement u and the shear stress in the adhesive are identical, ie differ only by the correction factor.
    Furthermore, with greater subsystem rigidity of the printed diagonal relative to the subsystem stiffness of the shear stress, the printed diagonal also assumes a greater share of the load transfer, and vice versa. Thus, the course of τ = f (E: G) is inverse to the course of oc = f (E: G). It is thus possible here to use a single curve to determine both values.
    Thus, a biaxial diagram is sufficient, from which an auxiliary variable is read, which includes all geometric system sizes as well as the rigidity of the system. In order to determine the desired quantities, the auxiliary variable thus determined can then be multiplied by a scaling factor which includes the actual quantities of G and H.
    In order to further simplify the method, an inversely extending ordinate is introduced in the diagram according to FIG. 6, from which the horizontal force H recorded by the printed diagonal can be read directly. On the left-hand ordinate the auxiliary value u * is read and the searched 21 50162 / AG Vienna University of Technology
    System shift and shear stress values are given by the values for Eeq (E) and Haq (H) and a correction factor as follows:
    System shift: uSystem - u " · ^ / Q
    Shear stress: TFllQe = u '/ 13,886
    Only one specific geometric system configuration can be considered with a curve. In order to be able to take account of different log lengths, several curves are required in one diagram, as shown in FIG. 6 for different lengths of the blocking means. First, the curve for selected blockage is cut at E / G. The result is a value for u *. From this, the system displacement and the shear stress can be determined directly from the above formulas. Finally, the horizontal force Hc, which is absorbed by the blockage, can be read directly.
    All of the component components previously considered in the spring stiffnesses offer the stresses due to load transfer via thrust field and pressure diagonal certain resistances, which can be determined by means of material-specific, normative principles. The smallest resistance of those component components which are activated as a result of load transfer via pressure diagonal can be converted into a maximum horizontal force load capacity of the pressure diagonal Hc.max. This results in an upper bound for the right ordinate in FIG. 6.
    The smallest resistance of those component components which are activated as a result of load transfer via shear field can be converted into a maximum horizontal force load capacity of the shear field Ητπ13χ, by which the maximum permissible shear stress in the shear bond Tmax can be calculated. Assuming equally high shear spring stiffnesses along and across the joint, there is a direct correlation between the slip joint's gliding and the head displacement of the 22 50162 / AG Vienna University of Technology
    Wood-glass composite soheibe be determined and thus also xmax be linked to the head shift Uk. Thus, a value u * max, which represents the lower bound on the left ordinate in FIG. 6, is derived from the smallest resistance of the activated component components and the serviceability criterion of the head displacement.
    The marking of safety limits, which must not be under- or exceeded, now enables the designer to determine at a glance whether his chosen material and geometry parameters are technically possible in compliance with the safety regulations as a result of all component components.
    The invention is not limited to the stated embodiments. Individual parts may be shown in the figures to be unreasonably enlarged for purposes of clarity. Further embodiments corresponding to the idea of the invention also result from combinations of individual or several features that can be taken from, the entire description, the figures and / or the claims. Thus, embodiments are disclosed that consist of combinations of features that come from different Ausführungsbeispiefen. Furthermore, the invention is not limited to the recited formulas but also includes modifications thereof that are within the inventive concept. 23 50162 / AG Vienna University of Technology
    LIST OF REFERENCES 1 Composite construction 2 Glass pane 3 Coupling element 4 Frame construction 5 Flat side 6 Adhesive 7 Connecting means 8 Projection 9 End face 10 Blocking means 11 Separating layer 12 Spring model 13 Branch for modeling the shear stress of the adhesive 14 Branch for modeling the compressive stress of the blocking means 15 Frame joints 16 Dimensioning diagram 17 Horizontal force 18 Thrust 19 thrust
    权利要求:
    Claims (20)
    [1]
    1. Composite structure (1) comprising a glass pane (2) and a frame construction (4), the glass pane (2) being peripherally attached to a flat side (5) ) is connected via an adhesive (6) to a coupling element (3) which can be connected to the frame construction (4), characterized in that at least one blocking means (10) is provided between an end face (9) of the glass pane (2) and the coupling element (3) ) is not adherent attachable.
    [2]
    2. Composite construction according to claim 1, characterized in that between the blocking means (10) and the coupling element (3) a separating layer (11) is provided.
    [3]
    3. Composite construction according to claim 2, characterized in that the separating layer (11) is designed as an adhesive tape, plastic film, metal foil, paper, textile fabric or the like.
    [4]
    4. Composite construction according to one of claims 1 to 3, characterized in that the glass pane (2) is designed as float glass with broken edges, as thermally toughened glass or as laminated safety glass.
    [5]
    5. Composite construction according to one of claims 1 to 4, characterized in that the blocking means (10) is executed in sections or circumferentially in the form of a subsequently hardening liquid adhesive.
    [6]
    6. Composite construction according to claim 5, characterized in that the blocking means (10) is designed as a semi-elastic adhesive, in particular as an acrylate, or as an epoxy resin. • »· · · 4 · · · · · · · · · · * * * · · · · · · · · · · · · · · · 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 · * * · · * 28 ...... 50162 / AG Vienna University of Technology
    [7]
    7. Composite construction according to one of claims 1 to 6, characterized in that the frame construction (3) comprises wood, metal, plastic or a composite of these materials.
    [8]
    8. Composite construction according to one of claims 1 to 7, characterized in that the adhesive (6) is designed in the form of an adhesive layer of silicone adhesive or acrylate adhesive, or as an adhesive tape.
    [9]
    9. Composite construction according to one of claims 1 to 8, characterized in that the coupling element (3) is designed as a coupling strip with a substantially rectangular projecting edge.
    [10]
    10. Composite construction according to one of claims 1 to 9, characterized in that the blocking means (10) has a trapezoidal cross-section, wherein the base of the trapezoid is preferably facing the coupling element (3).
    [11]
    11. Composite construction according to one of claims 1 to 10, characterized in that between the end face of each Verklotzungsmittels (10) and the end faces of the glass sheet (2), a safety distance prevails in order not to excessively stress the corner of the glass sheet (2).
    [12]
    12. Composite construction according to one of claims 1 to 11, characterized in that in each corner of the glass pane one or two Verkootzungsmittel (10) are provided. • * * '** 2δ · * ** * · 50162 / AG Vienna University of Technology
    [13]
    13. A method for dimensioning a composite construction according to one of claims 1 to 12, characterized in that i. the effects are determined for disc and plate loads as well as for climate loads: ii. Geometry and material parameters of all construction elements are chosen or determined; iii. on the basis of a simplified spring model (12) equivalent spring stiffness of the construction are determined; iv. the load distribution on shear field and pressure diagonal is determined; v. on the basis of the equivalent spring stiffnesses the head displacement of the glass pane, the shear stress in the adhesive and the compressive stress in the blocking means are determined; vi. It is checked whether all calculated values lie within predefined safety limits; and vii. It is checked whether the resistance values of other component components meet the effects due to shear stress in the adhesive and compressive stress in the blocking agent.
    [14]
    14. The method according to claim 13, characterized in that the simplified spring model (12) comprises a branch (13) for modeling the shear stress of the adhesive (6) and a second, parallel branch (14) for modeling the compressive stress of the Verklotzungsmittels (IO) ,
    [15]
    15. The method according to claim 13 or 14, characterized in that from the equivalent spring stiffness an equivalent shear modulus of the adhesive and an equivalent modulus of elasticity of the Verklotzungsmittels is calculated, and these values are used in sequence for dimensioning.
    [16]
    16. The method according to any one of claims 14 to 15, characterized in that for modeling the shear stress of the adhesive (6) spring elements are provided for modeling the following effects: i. Sliding the adhesive (6); ii. Sliding the coupling element (3); ···························································································································································· Deformation of the connecting means (7); iv. Sliding the frame structure (4); v. Distortion of the glass pane (2).
    [17]
    17. The method according to any one of claims 14 to 16, characterized in that for modeling the compressive stress of the Verklotzungsmittels (10) spring elements are provided for modeling the following effects: i. Compression of the glass sheet (2); ii. Sliding the adhesive (3) and compressing the blocking means (10); iii. Deformation of the connecting means (7); iv. Sliding of the coupling element (3); v. Compression of the coupling element (3) vi. Sliding the frame structure (4); vii. Bending the frame structure (4); viii. Elongation of the frame structure (4); ix. Deformation of connecting means in the frame corner, in particular frame joints (15).
    [18]
    18. The method according to any one of claims 13 to 17, characterized in that for the execution method a pre-calculated two-dimensional design diagram (16) is used.
    [19]
    19. Computer program which implements a method according to any one of claims 13 to 18.
    [20]
    20. Composite construction (1), produced by a method according to one of claims 13 to 19

    Puchbi
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    同族专利:
    公开号 | 公开日
    WO2012146575A1|2012-11-01|
    AT511373B1|2013-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE7628717U1|1976-09-14|1978-01-05|Straub, Theodor, 8857 Gottmannshofen|DISC PUMPING|
    DE10339686B4|2003-08-28|2007-11-08|Dipl. Ing.Gaulhofer GmbH & Co.KG, Fenster und Türen|Window or door construction|
    AT502470B1|2005-07-06|2007-08-15|Oesterreichische Ges Fuer Holz|COMPOSITE OF GLASS|
    BE1018050A3|2008-03-18|2010-04-06|Sapa Rc System Nv|WINDOW OR DOOR PROFILE.|DE202014004304U1|2014-04-05|2014-06-18|Uniglas Gmbh & Co. Kg|bracket|
    DE102017113981A1|2017-06-23|2018-12-27|HUF HAUS GmbH & Co.KG.|Post-and-beam construction with glazing, as well as locking element for clamping the glazing|
    法律状态:
    2017-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20170427 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT5882011A|AT511373B1|2011-04-27|2011-04-27|COMPOSITE CONSTRUCTION FROM A GLASS PANEL AND A FRAME CONSTRUCTION|AT5882011A| AT511373B1|2011-04-27|2011-04-27|COMPOSITE CONSTRUCTION FROM A GLASS PANEL AND A FRAME CONSTRUCTION|
    PCT/EP2012/057441| WO2012146575A1|2011-04-27|2012-04-24|Combined structure of a glass pane and a frame structure|
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