WO2019141785A1 - Structures porteuses hybrides et leur utilisation - Google Patents

Structures porteuses hybrides et leur utilisation Download PDF

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Publication number
WO2019141785A1
WO2019141785A1 PCT/EP2019/051173 EP2019051173W WO2019141785A1 WO 2019141785 A1 WO2019141785 A1 WO 2019141785A1 EP 2019051173 W EP2019051173 W EP 2019051173W WO 2019141785 A1 WO2019141785 A1 WO 2019141785A1
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WO
WIPO (PCT)
Prior art keywords
shaped body
body according
reinforcement
shell
core
Prior art date
Application number
PCT/EP2019/051173
Other languages
German (de)
English (en)
Original Assignee
Karlsruher Institut für Technologie
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karlsruher Institut für Technologie filed Critical Karlsruher Institut für Technologie
Priority to CN201980009124.7A priority Critical patent/CN111615576A/zh
Priority to EP19703244.4A priority patent/EP3740625A1/fr
Publication of WO2019141785A1 publication Critical patent/WO2019141785A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
    • E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/0447—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section circular- or oval-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/40—Arched girders or portal frames of metal

Definitions

  • the present invention novel hybrid support structures and their use.
  • Hybrid support structures made of an outer metal shell element, which can perform a static function as well as a decorative function, and one or more inner elements, which have only static function, are known.
  • CN-A 1Q82635, CN-A 202596029 and CN-A 101476370 describe specific ones
  • GB-A 2 366 535 describes processes for the active-medium-based transformation from sheet to hollow structures, in which limiting tools are used as an aid during forming.
  • EP-A 2 110 189 discloses a method for tool-free, active-media-based shaping of sheet metal to hollow structures. For larger structures, however, one or more are mounted internally or externally during the forming process
  • the object of the present invention was to provide a molded article for a support structure, which satisfies both aesthetic and static requirements when used in architectural constructions and structures.
  • it In order to allow minimum dimensions of the connection points at both ends of the molded body, it should have a non-linearly tapering cross section from the largest diameter to both support ends and a high longitudinal load capacity between the two ends of the support structure for static reasons.
  • a technically improved design is essential, which is characterized by a high buckling load capacity at the same time reduced dead weight and is also suitable for non-vertical applications.
  • the present invention provides a molded article of an outer hollow metallic shell element having a non-linearly tapered cross section from the largest cross section to the two ends of the support structure and at least partially enclosing a cavity to form a core element.
  • it has an interior statically stable core element, which connects both column ends with each other statically.
  • the present invention thus provides a shaped body which enables the creation of a hybrid support structure.
  • the molded body consists of shell element and core element.
  • the shell element encloses a cavity, wherein the cavity occupies the entire length of the molded body and does not have to have any internals. Likewise, however, he may include at least one reinforcement and / or at least one filling element. Through this, the cavity can be completely or partially filled.
  • the shaped body which is delimited by the outer shell element, can absorb a solid filling and be prevented via these lateral displacements of the shaped body or of an optional core element. Because this increases the load-increasing and stiff-kerk-increasing.
  • a special shaped body or a support shape can be achieved, which preferably has a non-linearly tapering cross-section starting from the center of the support towards the two ends.
  • the hybrid support concept can be replaced for high load-bearing capacity, even with large support lengths.
  • the shell element used according to the invention is preferably made of stainless steel and / or carbon steel. Also suitable are aluminum, copper, brass and / or other metallic alloys and / or plastics.
  • the shell member may consist of or contain combinations of these materials or combinations thereof. Therefore, these materials can be used in combination with the aforementioned materials and / or other materials.
  • the shell element according to the invention preferably has a thickness or thickness of 0.1-7 mm, particularly preferably 0.5-5 mm, in particular 1-4 mm, Due to its impermeability, the formwork element prevents the penetration of media such as carbon dioxide, water, chlorides or other chemical substances and thus also the carbonation process. That is, the risk of corrosion inside and in particular the carbonation at the two thin ends of the support is excluded and achieved the highest possible life of the entire component. According to the invention can thus be produced moldings which have extremely thin ends.
  • the shaped body comprises shell element and core element. It thus provides a hybrid support structure (e.g., a support or flexure beam).
  • the core element is preferably static-bearing.
  • the shell element contains (in its interior) a (statically viable) kernel noise.
  • the core element may consist of the components cavity and / or Füilelement and / or reinforcement (preferably in the form of a core rod) and / or druckchristlen components (preferably in the form of a rope or monolayer). It is also possible to use any combination of these components.
  • the core element or its subcomponents may also go beyond the contour or, in particular, beyond the ends of the shell element. This is especially true for the reinforcement, e.g. in the form of a rod-shaped element.
  • Shell element and / or core element or its sub-components connect the two ends of the molded body continuously static with each other.
  • the reinforcement is stabform ig designed, ie it is most preferably a rod, hereinafter referred to as core rod
  • core rod This is preferably an embodiment in a cylindrical shape, for example as a rod or hollow cylinder in the form of a tube.
  • the reinforcement is preferably in the form of a core rod and may correspond in length to that of the shaped body or be longer or shorter.
  • the cylindrical rod or hollow cylinder can wholly or partially have a thread over its length and / or consist of two or more connected individual pieces.
  • the reinforcement can also be carried out by several EinzeMäbe or by a fiber reinforcement.
  • the reinforcement preferably contains or consists of metals thereof.
  • steel is used. It is particularly preferred if it is made of high-strength material, CFRP or GFRP reinforcement can also be used.
  • the cavity between shell element and reinforcement can show a filling. It is preferred to introduce a filling element into this, in particular under compressive stress of the shaped body. According to the invention, it is preferable that this is pumpable.
  • a filling element preferably mineral building materials, in particular concrete or mortar are used The filling element may consist of these materials or soften them.
  • Suitable filling elements are also polymers.
  • foamed or intumescent polymers for.
  • foamed polyurethane, polyisocyanate, polyisocyanurate are also used, for example, cement foam, concrete foam, wood foam or any other organic or inorganic foams.
  • the substances mentioned may contain the filling element or it may consist thereof. It can therefore consist of combinations of the substances mentioned or can also be used in combination with other substances.
  • the filling element may contain non-foamed and foamed portions, e.g. Concrete and foamed concrete.
  • the reinforcement (in particular the core rod) is preferably embedded in the filler element. This or this can be charged beyond its or its yield point due to the hybrid support structure according to the invention.
  • the shell element takes over static support functions in the form of a reinforcing outer reinforcement layer.
  • the core element serves to stabilize and maintain the shape of the shell element of small thickness.
  • the core element can have a pressure-slack and / or prestressed element, eg a rope or monofilament.
  • a pressure-slack and / or prestressed element eg a rope or monofilament.
  • any materials come into consideration.
  • the pressurized element the outer shell element or the core element can be subjected to pressure.
  • a prestressed rope can be performed by the hollow body, which is zugbe conferencet.
  • the ratio of the length of the shaped body to the diameter of the entire molded body at the thickest point is in the range from 3: 1 to 30: 1, more preferably in the range from 5: 1 to 25: 1, most preferably in the range from 10: 1 to 20: 1.
  • Values of the diameter of 10 to 400 mm, preferably 50 to 150 mm, particularly preferably 60 to 120 mm, are at the thinnest point of the shaped body. to achieve.
  • the load introduction into the molded body at its ends can take place over the entire end cross section or even only via subcomponents.
  • optional fittings can be used for local load introduction at the ends of the molded body.
  • the fittings are used for connection to the further support structure. Furthermore, the connecting pieces protect the exposed concrete by cutting off the ends of the moldings concrete areas from ingress of media (carbonation) in the longitudinal direction of the column. In addition, through the fittings and appropriate measures (e.g., local installation of an insulating material or coating with intumescent to the fire shield) the fire thrust requirements are ensured at the support ends
  • the molded article consists only of the (3-dimensional) shell element and thus forms a hollow body, i. the core element is a cavity. The load transfer takes place via the shell element.
  • the molded article consists of the (3-dimensional) shell element and core element, wherein the core element consists of or contains a filler element.
  • the filling element may be concrete or foam and could here be e.g. contain a fiber reinforcement.
  • the load is introduced via the core element or via core element and shell element.
  • the shaped body consists of the (3-dimensional) shell element and core element, wherein the core element is formed by a core rod which is at least partially enclosed by a filler element. The load is introduced via the core element.
  • the structure corresponds in principle (c), the core rod is, however, arranged flush with the molding. The load is applied via the core element or via core element and shell element.
  • the molded body consists of the (3-dimensional) shell element, and has as a core element on a low-pressure component, which leads through the cavity of the shell elements.
  • the shaped body consists of the (3-dimensional) shell element and a core element, wherein the core element of filling element and reinforcement in the form of one or more individual staff.
  • a biased core element may be created above the one or more individual bars.
  • the molded body consists of the (3-dimensional) shell element and a core element, wherein the core element of filler element and reinforcement in the form of a plurality of individual rods or contains.
  • the molded article consists of the (3-dimensional) shell element and the core element.
  • the core element consists of a core rod which is at least partially enclosed by a filler element.
  • the length of the Kemstabs is shorter than the shaped body.
  • a connecting piece protrudes into the interior of the molded body at the ends of the molding and allows the load to be introduced into the core rod.
  • the shaped body is used as a support structure, for. B. as a support, bending beam or tension rod.
  • a support structure for. B. as a support, bending beam or tension rod.
  • parts of the mold can be used as a supporting structure. This can e.g. also be done by cutting out parts after completion of the molding
  • the shaped body can be produced by
  • At least two metallic flat elements e.g. Sheets are provided with a predetermined shape or contour
  • the flat elements along their contours are joined together to form a double or multi-layered shell element with a cavity or more cavities, which are preferably closed and the shell element not along the longer axis from the larger diameter to the two ends
  • the assembly results in a preferably fluid-tight cavity.
  • a connection for the supply of the pressure medium is attached, 4. in the cavity or the cavities of the planar shell element mitels a pressure medium, an overpressure relative to the ambient pressure is generated, which is adapted to reshape the shell element to the predetermined 3-dimensional structure of the molding,
  • one end or the two ends of the shell element are severed so that an opening for introducing the core element arises at one or both ends
  • a core element which is suitable to connect the two ends of the shell elements statically interconnected, is introduced,
  • one or more filler neck are preferably attached by welding to the joined two-ply still flat shell element at one or both ends, via which then the forming fluid is introduced.
  • the two ends step 5
  • insertion of the core member is made of a core rod (e.g., high-strength steel) and a filling member (e.g., praying).
  • a gas for example compressed air or a liquid, preferably water
  • a liquid preferably water
  • step 4 liquid concrete or mortar can be used as the pressure medium.
  • the concrete remains in the shell element as Kemelement or as a filler.
  • a pressure medium can be used in step 4 and polyurethane raw materials or organic substances which are reacted. Again, the polyurethane remains in the shell element as the core element or filling element.
  • the active-medium-based forming two or more thin sheets preferably in a thickness of 0.1 mm to 7 mm at the edge cohesively joined (for example, by welding, soldering, gluing, etc.) and then converted by internal dowsing.
  • the print media are the o.g. Substances into consideration. As a result, no mold is used here.
  • the shape of the resulting spatial structure is controlled only by the initial geometry of the board and the internal pressure.
  • it is also possible to use, at least partially, additionally molding tools for example for limiting the deformation or for profiling the shell element).
  • the active-media-based forming without a mold and the filling of the structure can also take place in a common process step. That the filling element is used directly as a reforming medium and then remains directly in the structure. In general, an e-stage process is used. That First, the forming takes place, for example with water, which is removed again after the forming, and then the introduction of the core element (for example core rod and filling element).
  • the core element for example core rod and filling element
  • FIG. 1 shows the process of production from a metal sheet up to the moldings
  • FIG. 2 shows the moldings in different variants
  • FIG. 3 shows schematically the shaped body according to the invention in different lengths.
  • Figure 4 shows the molding according to the invention with Kemelement
  • step 1 the sheet is cut.
  • step 2 one or more connections for the supply of the pressure medium attached, in step 3, two or more cut sheets 17 superimposed and fixed properly, and then in step 4, for example, joined together by welding with a sealing seam.
  • step 5 the active-media-based forming process for the spatial hollow body 15, wherein water is used as the active medium in the present case.
  • step 6 optional fittings 18 are installed for connection to the rest of the construction.
  • the optional introduction of a reinforcement e.g. in the form of a core rod (to increase the carrying capacity) results from step 8.
  • step 9 the introduction of a filling element takes place. This results in the hybrid component according to the invention.
  • the shell member 11, the filling element 12 and the core rod 13 used as a reinforcement are shown.
  • FIG. 2 shows various possible variants of the hybrid support structure.
  • the load introduction into the molded body at its ends can be over the entire Endquerschnit (eg shell element and core element, see Fig. 2b, (d)) or only on sub-components (eg only on the reinforcement (Kemstab) in variant Fig, 2b, (c )) respectively.
  • For local load introduction at the ends of the molded body optional terminal blocks can be used. The following variants are shown in detail:
  • the molded article consists only of the (3-dimensional) shell fossil and thus forms a hollow body, i. the core element is a cavity. The load transfer takes place via the shell element.
  • the shaped body consists of the (3-dimensional) shell element and core element, wherein the core element consists of a filler or contains this.
  • the filling element may be concrete or foam and could here be e.g. contain a fiber reinforcement.
  • the load is introduced via the core element or via core element and shell element.
  • the molded body consists of the (3-dimensional) shell element and core element, wherein the core element is formed by a core rod which is at least partially enclosed by a filler element. The load is introduced via the core element.
  • the molded body consists of the (3-dimensional) shell element, and has as a core element on a low-pressure component, which leads through the cavity of the shell member.
  • the molded body consists of the (3-dimensional) shell element and a core element, wherein the core element of filler element and reinforcement in the form of one or more individual rods.
  • a biased core member may be created via the or the individual rods.
  • the molded body consists of the (3-dimensional) shell element and a core element, wherein the core element of filler element and reinforcement in the form of a plurality of individual rods or contains.
  • the molded body consists of the (3-dimensional) shell element and the core element.
  • the core element consists of a core rod which is at least partially enclosed by a filler element.
  • the length of the Kemstabs is shorter than the shaped body.
  • a fitting protrudes into the interior of the body at the ends of the molding and allows for laser lamination into the core rod.
  • FIGS. 3 and 4 are formed. From FIG. 4, the shaped body can be seen in detail.
  • the molded body at the ends 16 by means of a connecting piece 18 (here: for example, a foot plate) attached to a concrete floor 14.
  • the core rod 13 is surrounded by a filling element 12.
  • the core rod 13 and filling element 12 form the core element. This is again held by the shell member 11 in the predetermined shape.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Bridges Or Land Bridges (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

La présente invention concerne un corps moulé composé d'un élément coque (11) métallique extérieur creux qui présente une section transversale se réduisant de manière non linéaire, de la section transversale la plus importante jusqu'aux deux extrémités (16), ledit élément entourant au moins en partie un espace creux, afin de former un élément central (19).
PCT/EP2019/051173 2018-01-19 2019-01-17 Structures porteuses hybrides et leur utilisation WO2019141785A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201980009124.7A CN111615576A (zh) 2018-01-19 2019-01-17 混合承载结构和其应用
EP19703244.4A EP3740625A1 (fr) 2018-01-19 2019-01-17 Structures porteuses hybrides et leur utilisation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018101204.7 2018-01-19
DE102018101204 2018-01-19
DE102018132485.5 2018-12-17
DE102018132485.5A DE102018132485A1 (de) 2018-01-19 2018-12-17 Hybride Tragstrukturen und deren Verwendung

Publications (1)

Publication Number Publication Date
WO2019141785A1 true WO2019141785A1 (fr) 2019-07-25

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ID=67145169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/051173 WO2019141785A1 (fr) 2018-01-19 2019-01-17 Structures porteuses hybrides et leur utilisation

Country Status (4)

Country Link
EP (1) EP3740625A1 (fr)
CN (1) CN111615576A (fr)
DE (1) DE102018132485A1 (fr)
WO (1) WO2019141785A1 (fr)

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