Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
  • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry

Definitions

• CONNECTION ELEMENT METHOD FOR MANUFACTURING A CONNECTION ELEMENT AND RELATED INSTALLATION KIT
• connection element a connection element, a method for manufacturing a connection element and a related installation kit.
• connection elements made of composite material to be used, for example, for consolidating or improving the safety of structures in the building industry and in the industry in general.
• the meshes are embedded inside a mortar with binding agents, which may be of different types, and are used for consolidating existing structures (masonry, concrete, reinforced concrete, etc.) creating a reinforced plaster to be applied on the surfaces, or as slabs for manufacturing load bearing floor slabs.
• the mesh may be blocked in position by means of the use of junction elements inserted in holes made in the masonry.
• the junction elements are generally made of metal or another material, and have an L-shape, in which the two sides are substantially perpendicular to each other.
• an anchoring resin has been distributed inside the hole, one side is inserted into the hole obtained in the masonry, while the other side is arranged parallel to the surface of the masonry.
• Mesh and junction elements are therefore embedded inside a mortar with binding agents which may be of different types.
• the mesh is positioned on both surfaces of a masonry, it is possible to block it in position, making a through hole so that the two meshes may be connected to each other with two junction elements: a first junction element inserted at one surface, and a second junction element inserted at the opposite surface.
• junction elements made with preformed bars made of composite material comprising fibres and thermosetting resin are known.
• the preformed bar made of composite material may be obtained by means of a forging method or by means of a pultrusion method. In both cases, the fibres are picked up and passed through a resin impregnation bath.
• the impregnated fibres are modelled directly on the die, where they are subjected to natural or artificial curing in suitable furnaces.
• the impregnated fibres pass through a die so as to give the manufactured item a specific cross section, compacting the fibres together.
• the impregnated fibres are then passed inside a curing furnace which provides heat so that the resin may polymerize and therefore cure. These two steps may be carried out jointly in the production die.
• a so-called pulling device is there, which provides the impregnated fibres with the traction necessary to move through the stations mentioned above.
• the method is therefore free from downtime, since the pulling device allows the manufactured item being processed to move between the various stations of the apparatus.
• an area may be arranged for the automated cutting of the pultruded bars.
• Bars made of composite material offer many advantages. For example, with respect to bars made of metal, they are lighter and are not subject to oxidation.
• the main limitation of the pultruded bars is that they may not be bent on site, for example in the case in which an anchorage is to be made through the masonry between two reinforcement plates.
• bent bars made of composite material are produced directly bent by means of forging, in a dedicated plant.
• the production of these elements even if they are manufactured already bent, fails to ensure the dimensional and inclination flexibility which would instead be necessary.
• the bars thus obtained may be inserted inside a hole made in the support to be reinforced or positioned where previously defined, while the end consisting of free fibres (called, in the technical jargon, the unravelled end) is radially widened and glued to the desired surface with specific organic and/or inorganic adhesives or embedded in the mortar with which the surface of the support is coated. Thereby, the unravelled end ensures the mechanical continuity of the elements.
• connection element for the building industry and industry in general, which may be adapted to different conditions of use.
• connection element for the building industry which may be easily used for the junction through a through hole in the support to be consolidated by means of reinforcement plates on the surfaces thereof, or simply as a connection element with the ends to be embedded in two or more solids to be connected.
• connection element for the building industry which is simple and cost effective to manufacture with respect to preformed connectors of the known type.
• connection element which is easier to use with respect to the connectors of the prior art.
• connection element according to claim 1 by a method for manufacturing a connection element according to claim 11 and by a related installation kit according to claim 14. DESCRIPTION OF THE DRAWINGS
• Figure 1 diagrammatically shows a perspective view of a first embodiment of a connection element according to the present invention
• FIG. 2 diagrammatically shows a perspective view of an alternative embodiment of a connection element according to the present invention
• FIG. 3 diagrammatically shows a perspective view of a further alternative embodiment of a connection element according to the present invention
• Figure 4 diagrammatically shows a possible use of a connection element according to the present invention
• [0035]- Figures 5-7 diagrammatically show perspective views of possible embodiments of a connection element according to the present invention
• [0036]- Figure 8 diagrammatically shows a possible alternative embodiment of a connection element according to the present invention
• FIG. 9 diagrammatically shows a possible alternative embodiment of a connection element according to the present invention
• FIG. 10 diagrammatically shows a possible alternative embodiment of a connection element according to the present invention
• Figure 11 diagrammatically shows a perspective view of a component of a kit according to the present invention.
• Figure 12 diagrammatically shows a sectional view of a component of a kit according to the present invention.
• Figure 12 diagrammatically shows a sectional view of a component of a kit according to the present invention.
• Figure 1 shows a connection element according to the present invention, which is indicated with the generic reference 12.
• connection element 12 is made of composite material comprising a bundle of fibres 13 and a binding agent.
• the binding agent may be a resin or an inorganic matrix.
• matrix and the term binding agent will be used indifferently to indicate the same material.
• connection element 12 comprises at least one preformed portion 14 and at least one free fibre portion 16, 18.
• the preformed portion 14 comprises a section of the bundle of fibres 13 embedded in the binding agent to form a monolithic structure.
• the preformed portion 14, which in use may be inserted inside a hole in the support to be consolidated or in the solids to be connected, may have an external surface with sand or grit and binding agent fillings, or an external surface subjected to roughing by means of a mechanical processing, by removing material or by forging, in order to improve the performance of the connection .
• the length of the preformed portion 14 may, for example, range from 10 mm to 20000 mm. In any case, the length of the preformed portion 14 may be adapted to specific needs.
• the length of the preformed portion 14 may be decided on the basis of the thickness of the structural or non-structural element crossed and/or the distance of the elements to be connected in which it must be inserted.
• the preformed portion 14 may have a substantially circular cross-section, as shown in the embodiments of Figures 1, 2, 3, 8-10. [0051]According to a possible alternative embodiment, shown in Figure 5, the cross section of the preformed portion may be C-shaped.
• the preformed portion 14 may have an elongated cross-section, even with or without the presence of a reinforcing rib 21, having a longitudinal or transverse development.
• the reinforcing ribs 21 are two and arranged parallel.
• the preformed portion may have a substantially circular and hollow section, as shown in the example of Figure 7.
• the cross section may, for example, be T-, L-, C-, double T-shaped, rectangular, square, cylindrical or according to specific design requirements.
• the internal volume of the preformed portion 14 may be filled to increase the resistance, or in general the performance, thereof.
• the internal volume may be filled, for example, with resins, mortars, organic or inorganic matrices or matrices of another type.
• the external surface may be continuous, provided with holes or subjected to other surface treatments capable of improving the adhesion of the connection element.
• the free fibre portion 16, 18 may be arranged at one or both ends of the bundle of fibres 13. Embodiments of this type are shown for example in Figures 1 and 2.
• the free fibre portion may be arranged between two preformed portions 14.
• An embodiment of this type is shown in Figure 3.
• the length of the free fibre portion 16, 18 may, for example, range from 10 mm and 20,000 mm.
• the length of the free fibre portion may be adapted to specific needs.
• virgin fibres means fibres which, at a portion thereof, have not been embedded in the resin, mortar, organic matrix, inorganic matrix, or matrix of another type. In technical jargon, virgin fibres may also be defined as dry fibres.
• virgin fibres are fibres which, in the free fibre portion 16, 18, 19 have not been embedded with resin, mortar, organic matrix, inorganic matrix or another matrix to make a monolithic or preformed structure.
• connection element 12 has been impregnated at the preformed portion 14 while they have not been impregnated in the free fibre portion 16, 18, 19.
• such fibres may, for example, be processed or treated in line or during a subsequent step to obtain products or elements with shape and features based on the specific function thereof, such as, for example, the possibility of impregnating with matrices and/or gripping material with different properties.
• the free fibre portion 16, 18, 19 may comprise or consist of virgin fibres.
• the free fibre portion 16, 18, 19 may be made with at least 90% of virgin fibres.
• Figure 4 shows some examples of installation of connection elements 12 according to the present invention, in which the free fibre portion 16 is visible, the fibres 13 of which are arranged radially.
• the fibres of the free fibre portion 16, 18, at the ends may also be arranged in different manners, as it may be easily assumed by those skilled in the art.
• the free fibre portion may consist of virgin fibres.
• the bundle of fibres 13 may comprise synthetic organic fibres, natural organic fibres, inorganic fibres and/or metallic fibres.
• a connection element may comprise fibres of a different type.
• the synthetic organic fibres may comprise, for example, aramid fibres, poly-para-phenyl benzobisoxazole (PBO), and/or polyester.
• Natural organic fibres may comprise, for example: cotton, hemp, flax, sisal, bamboo, wood, wool, silk, etc.
• the inorganic fibres may comprise, for example: glass, carbon, basalt, quartz, etc.
• the metallic fibres may comprise, for example: stainless steel, carbon steel, copper, brass, aluminum, titanium, etc.
• the bundle of fibres 13 may comprise fibres of different type.
• the binding agent may be a resin.
• thermosetting type of the thermoplastic type
• inorganic matrices and/or matrices of another type may be of the thermosetting type, of the thermoplastic type, it may use inorganic matrices and/or matrices of another type.
• thermosetting resin this may, for example, be of the vinyl-ester, polyester, bisphenol, acrylic type, etc.
• the resin may be selected from the group comprising PVA, PP, Pen, etc.
• the matrix may be cement, quartz, lime, gypsum, etc.
• connection element 12 may comprise a guide element 24 (shown in Figure 8) sliding within the preformed portion 14, so as to be adapted to be moved between an extracted position, protruding from the preformed portion 14 at the at least one free fibre portion 16, 18 and a retracted position in which it does not protrude or protrudes from the preformed portion 14 at the at least one free fibre portion 16, 18.
• the guide element 24 may be made of rigid polymeric material.
• the guide element 24 may be made of thermoplastic, thermosetting, metallic material, etc.
• the guide element 24 protrudes from the preformed portion 14 at the at least one free fibre portion 16, 18, but it does not slide inside the preformed portion 14.
• the guide element 24 is used to optimize the unravelling of the at least one free fibre portion 16, 18 of the ends of the connection element 12.
• the free fibre portion may comprise a grouping element 26 in a position substantially distal with respect to the preformed portion 14.
• the grouping element 26 is adapted to group the virgin fibres together, in one or more positions of the section distal with respect to the preformed portion 14. In other words, between the grouping element 26 and the preformed portion 14 there is a section comprising or consisting of virgin fibres.
• the grouping element 26 may, for example, be a resin, or a retention element such as, for example, a ring or a device for grouping the fibres made of plastic material, or of any material durable in time, tightened about the guide element 24.
• the grouping element 26 may slide with respect to the guide element 24.
• the grouping element 26 is made to slide on the guide element 24 which is fixed, so that the virgin fibres are arranged in the desired regular or irregular shape on the surface of the support to be consolidated or to be made integral.
• protruding from the surface of the masonry may be cut before or after the adhesive or the matrix has been distributed on the surface of the support to embed and fix the virgin fibres.
• the grouping element 26 may slide with respect to the guide element following a predefined arrangement, for example, using a preformed portion 14 having a helical development.
• the grouping element 26 may also be rotated about the main axis.
• a free fibre portion 19 may be arranged between two preformed portions 14.
• the preformed part may comprise at least two monolithic sections separated from each other by a section at least partially made with virgin fibres.
• connection element 12 maintaining one or more intermediate dry portions, for example, by means of a pultrusion process interrupted by bath or by impregnation.
• the use may be extended to the creation of real brackets of elements to be consolidated, keeping the dry section in the positions in which the preformed sections may not be used.
• said virgin fibres may comprise impregnation points 30, adapted to improve the grip of the virgin fibres in the binding agent used to cover the surface of the masonry.
• connection element 12 made of composite material comprising fibres and a resin-based binding agent according to the present invention will be described below.
• connection element [00101] - cutting the connection element.
• the step of impregnating the fibres 13 may occur by means of a binding agent such as a resin of the thermosetting or thermoplastic type, or an inorganic matrix.
• the impregnation is carried out at sections of the bundle of fibres 13, while in some sections the fibres of the fibre bundle comprise or consist of virgin fibres.
• the cutting may occur at a section of the bundle of fibres 13 impregnated with resin, or at a section of the fibre bundle in which the fibres comprise or consist of virgin fibres.
• the method may comprise a step in which the element 24 is provided inside the fibre bundle.
• the method may comprise a step in which the grouping element 26 is provided.
• the present invention also relates to an installation kit comprising an insertion funnel 40 adapted to facilitate the insertion of the connection element 12 inside a hole in a masonry.
• the insertion funnel may comprise a tubular portion 44 at one end of which a flaring 42 is provided.
• the insertion funnel may also be used to guide the virgin fibres of the free fibre portion at the curving area on the surface of the masonry.
• connection element has become available, which may be used to connect two plate-like resistant elements through a hole in a masonry.
• the ends of the connection element are both prepared with a free fibre portion.
• connection element may be used, for example, as a connection system between reinforcement elements for the wall/resistant element which is required to increase the performance by means of a symmetrical or partially symmetrical reinforcement layout.
• the connection element also acts as a tie rod or bracing, the dry terminals/free ends thereof being possibly made on site with any geometric shape, by means of pre-moulding in the factory or direct pre-application on site, with or without the application of a mat to facilitate the creation of a junction plate or finally by providing a light primer already in the production step to improve the application steps, with the elements to be braced and/or tied.
• bracket or reinforcement in general, for structural or non-structural elements made of reinforced concrete, completing the construction steps in the factory (co-moulding or similar techniques) or on site.
• the particular production method allows to manufacture a product which maintains the mechanical resistance and stiffness properties of the connection in the anchorage area of the elements to be connected unaltered.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Reinforcement Elements For Buildings (AREA)
• Joining Of Building Structures In Genera (AREA)
• Connection Of Plates (AREA)
• Moulding By Coating Moulds (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=70228469

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Family Cites Families (8)

• 2019
  • 2019-12-18 IT IT102019000024511A patent/IT201900024511A1/it unknown
• 2020
  • 2020-12-17 CN CN202080093443.3A patent/CN114945726A/zh active Pending
  • 2020-12-17 US US17/787,178 patent/US20230012652A1/en active Pending
  • 2020-12-17 EP EP20838622.7A patent/EP4077829A1/de active Pending
  • 2020-12-17 WO PCT/IB2020/062100 patent/WO2021124192A1/en unknown
  • 2020-12-17 CA CA3165303A patent/CA3165303A1/en active Pending

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