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EP3863820B1 - Procédé pour la préparation d'un élément de double paroi en béton - Google Patents

Procédé pour la préparation d'un élément de double paroi en béton Download PDF

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Publication number
EP3863820B1
EP3863820B1 EP19786766.6A EP19786766A EP3863820B1 EP 3863820 B1 EP3863820 B1 EP 3863820B1 EP 19786766 A EP19786766 A EP 19786766A EP 3863820 B1 EP3863820 B1 EP 3863820B1
Authority
EP
European Patent Office
Prior art keywords
concrete
shell
fixing device
pallet
end section
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP19786766.6A
Other languages
German (de)
English (en)
Other versions
EP3863820C0 (fr
EP3863820A1 (fr
Inventor
Martin Schwarzenbeck
Otto Schwarzenbeck
Josef Binsteiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin Schwarzenbeck & Co Bauunternehmen und Betonwerk & Co Kg GmbH
Original Assignee
Martin Schwarzenbeck & Co Bauunternehmen und Betonwerk & Co Kg GmbH
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
Priority claimed from DE102018124980.2A external-priority patent/DE102018124980B3/de
Priority claimed from DE202018105793.6U external-priority patent/DE202018105793U1/de
Application filed by Martin Schwarzenbeck & Co Bauunternehmen und Betonwerk & Co Kg GmbH filed Critical Martin Schwarzenbeck & Co Bauunternehmen und Betonwerk & Co Kg GmbH
Publication of EP3863820A1 publication Critical patent/EP3863820A1/fr
Application granted granted Critical
Publication of EP3863820B1 publication Critical patent/EP3863820B1/fr
Publication of EP3863820C0 publication Critical patent/EP3863820C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/028—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members for double - wall articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0002—Auxiliary parts or elements of the mould
    • B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
    • B28B7/002—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps using magnets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete

Definitions

  • the invention relates to a method for producing concrete double wall elements.
  • precast concrete parts often takes place in two steps, which take place in spatially separate locations.
  • First, so-called concrete double wall elements are produced in a precast concrete factory, which include a first shell and a second shell made of reinforced concrete. There is a cavity between the two shells, which can be provided with insulating materials if necessary.
  • These double wall elements, prefabricated in the precast concrete factory, are transported to the construction site and fixed there in the desired end position. The cavity between the first and second shell is then filled with concrete.
  • a generic procedure is in the international patent application WO 2018/171893 A1 described.
  • the production of the double wall elements in the precast concrete factory typically takes place in several process steps using a so-called pallet circulation system.
  • a so-called first shell is produced and hardened in a drying chamber.
  • Composite elements are concreted into this initial shell, which are typically distributed over the entire wall element, act as spacers and define the wall thickness of the component in the later component.
  • the first shell Once the first shell has hardened, it is turned 180° and placed on a layer of liquid concrete (fresh concrete), which forms the (still unhardened) second shell.
  • the spacers concreted into the first shell rest on the lower formwork when the first shell is placed in the fresh concrete of the second shell.
  • the assembly of the first and second shells is brought back into the drying chamber to harden the second shell.
  • the concrete double wall element manufactured in this way is then removed from the pallet in a demoulding station.
  • the concrete shells and concrete elements to be manufactured are on movable ones Pallets are stored, which are moved to different work stations for the different work steps.
  • This procedure enables very efficient production, but during the step of placing the first shell on the fresh concrete of the second shell, it presents the difficulty that the hardened first shell rests with its entire weight on the point-shaped spacers.
  • the process step of placing the first shell is machine-controlled and highly precise, the subsequent compaction process and in particular when transferring the pallet carrying the fresh concrete to a next work station can occur due to the braking and acceleration forces that occur in combination with the inertia of the first shell a displacement of the hardened first shell relative to the fresh concrete of the second shell.
  • misalignments are noticed before the second shell of the double wall part has hardened, they can be corrected manually, although this involves a lot of effort. However, such misalignments are often only noticed when the walls are being assembled on the construction site. At this point, the misalignments can no longer be corrected but must be compensated for through increased assembly effort.
  • the invention is therefore based on the object of proposing a method in which the above-described misalignments of the two individual concrete shells relative to one another are avoided or at least reduced.
  • a fixing device with a first and a second end section is used for the relative positioning of the two individual shells.
  • the first end section of the fixing device is concreted into it together with the connecting means during the production of the first concrete shell.
  • the first end section is embedded in the liquid concrete of the first concrete shell in such a way that the second end section which is not embedded in concrete Fixing device projects both laterally beyond the contour of the first concrete shell and vertically beyond it.
  • An anchor element is or is attached to the end of the second end section.
  • the second end section or the anchor element are dimensioned in such a way that the second end section provided with the anchor element protrudes approximately as far out of the first concrete shell in the normal direction of the first concrete shell as the connecting means, which are inserted into the first concrete shell together with the fixing device be concreted in.
  • the anchor element comes into engagement with the pallet carrying the fresh concrete layer and connects the first concrete shell to this pallet in a non-displaceable manner.
  • the first concrete shell is thus fixed relative to the pallet carrying the fresh concrete layer, so that no changes in position of the first concrete shell relative to the pallet can occur during the shaking of the first concrete shell and during the transport of the pallet into the hardening station or drying chamber.
  • the part of the fixing element comprising the two end sections is preferably a curved rod, in particular a curved steel rod.
  • the anchor element is preferably releasably attached to the second end section of this steel rod and is only attached to the second end section after the first end section has been concreted in (and the first concrete shell has hardened). This makes it easier to handle the fixing element during the production of the first concrete shell, because only the steel rod (comparatively light in weight) is cast in concrete are needed, while the (heavier) anchor element only needs to be attached to the steel rod later, before the first concrete shell is placed on the fresh concrete layer.
  • the anchor element is preferably connected via a thread to the second end section of the fixing device or the steel rod.
  • the first end section of the fixing device is inserted into the fresh concrete of the first shell in the desired position/orientation of the fixing device, and the fixing device is then placed in the curing oven together with the pallet carrying this fresh concrete in order to place the fixing device in this position /Alignment to be anchored in the first concrete shell.
  • a support device e.g. mechanical or magnetic
  • the anchor element is placed or plugged or screwed onto the second end section of the fixing device.
  • the first concrete shell is then turned through 180° using a turning system and inserted into the fresh concrete of the second half shell.
  • the anchor element of the fixing device establishes a (e.g. magnetic) connection with the pallet carrying the fresh concrete, whereby the fixing device and thus the first concrete shell is fixed relative to the pallet. If the pallet now moves after the turning process, the fixing device holds the first concrete shell in the exact position relative to the fresh concrete layer applied to the pallet. Horizontal slipping of the first concrete shell relative to the fresh concrete of the second concrete shell during transport or hardening of the second concrete shell is thus effectively prevented.
  • a semi-finished product for producing a concrete double wall element comprises a hardened, flat concrete layer with composite means embedded in sections in this concrete layer and a fixing device which is concreted into the concrete layer in a first end section and has a second end section, which projects laterally offset from the surface of the concrete layer.
  • the second end section is provided with an anchor element (detachably or non-detachably connected to this second end section), which can in particular comprise a permanent magnet.
  • the semi-finished product is used as the first concrete shell in the production of a concrete double wall element;
  • the fixing device of the semi-finished product enables the semi-finished product to be fixed on a pallet carrying a fresh concrete layer in the manner described above.
  • Figure 1 shows a schematic representation of a concrete double wall element 1 with two flat shells 2a, 2b made of hardened concrete 1, which are connected by composite means 3 and fixed at a predetermined distance from one another by means of the composite means 3.
  • a cavity 29 is formed between the two concrete shells 2a, 2b, which is filled with liquid concrete in a later process step, not described in detail here, at a construction site, in particular on a construction site, to form a concrete wall.
  • FIG 2 illustrates a basic process flow when producing the concrete double wall element 1 Figure 1 ; in the Figures 3a - 3e individual process steps are shown.
  • the concrete double wall element 1 is manufactured with the help of pallets 5a, 5b, which successively pass through several stations of a production line (not shown in the figures).
  • the displaceability of the pallets 5a, 5b during the production of the concrete double wall element 1 is in the Figures 3a - 3f indicated by transport rollers 8 below the pallets 5a, 5b.
  • step A formwork elements 6a' are attached to a first pallet 5a;
  • the entirety of these formwork elements 6a' forms a formwork 6a, which encloses an interior space 7a to be filled with liquid concrete and thus corresponds to the outer and inner contour of the concrete double wall element 1 to be manufactured (step A).
  • Reinforcement mats (not shown in the figures) can be inserted into the interior 7a formed by the formwork elements 6a' before liquid concrete 10a (so-called fresh concrete) is poured into the interior 7a (step B, see Figure 3a ).
  • Composite means 3 for example lattice girders, are inserted into the still unhardened liquid concrete 10a, which later, in the concrete double wall element 1 to be manufactured, connect the two concrete shells 2a, 2b to one another (see Figure 1 ). Peaks 4 of these composite means 3 protrude upwards from the liquid concrete 10a and in this way define the width of the cavity 29 inside the concrete double wall element 1 to be manufactured.
  • a fixing device 20 with two end sections 21, 22 is introduced into the still unhardened liquid concrete 10a in such a way that the first end section 21 is embedded in the liquid concrete 10a, while the second end section 22 protrudes beyond the formwork 6b both vertically (in a connection direction 15) and laterally (perpendicular to the connection direction 15).
  • the fixing device 20 includes in the exemplary embodiment Figure 3a an S-shaped bent metal rod 26 with two approximately parallel, spatially offset end sections 21, 22, the first end section 21 of which is inserted into the liquid concrete 10a, while the second end section 22 protrudes from the pallet 5a approximately parallel to the connecting direction 15 and is outside the outer contour of the formwork 6a (see Figure 3a ).
  • the second end section 22 has a fastening area 25 for fastening an anchor element 23, for example a permanent magnet.
  • the anchor element 23 can be firmly connected to the second end section 22 (eg by means of an adhesive or compression connection).
  • the anchor element 23 is preferably - as in the exemplary embodiment Figures 3b - 3e shown - releasably attached to the second end section 22 and is only attached to the second end section in a later process step (see Figure 3c ).
  • the second end section 22 in the fastening area 25 is provided with an external thread onto which the anchor element 23 can be screwed.
  • the pallet 5a equipped in the manner described is now moved to a hardening station in which the liquid concrete 10a hardens to form a first concrete shell 2a (first shell) (step C).
  • a support device 30 is provided, which holds the fixing device 20 in the desired position and orientation during transport into the hardening station and during the hardening of the liquid concrete 10a.
  • the fixing device 20 is firmly concreted into the first shell 2a in the area of its first end section 21.
  • the first end section 21 can have bends/curvatures and/or material thickenings, be provided with a surface structure, etc.
  • the support device 30 can be removed since the fixing device 20 is now firmly in the hardened concrete layer 2a is anchored. Furthermore, the magnetic anchor element 23 is screwed onto the free end of the second end section 22 of the fixing device 20.
  • Process steps A to C produce a semi-finished product 9 (intermediate product) for producing the concrete double wall element 1 Figure 1 created.
  • the semi-finished product 9 comprises the hardened first shell 2a with the composite means 3 embedded in sections in concrete, the tips 4 of which protrude from the concrete layer 2a in the connecting direction 15, as well as the fixing device 20 embedded in sections in concrete, the second end section 22 of which projects laterally offset from the surface of the concrete layer 2a in the connecting direction 15.
  • Such a semi-finished product 9 is in Figure 3b shown.
  • formwork elements 6b' for a formwork 6b are attached to a second pallet 5b, which also corresponds to the outer and inner contours of the concrete double wall element 1 to be manufactured, but which is arranged inverted to the formwork 6a of the first pallet 5a.
  • Reinforcement mats can first be inserted into the interior 7b formed by the formwork elements 6b'. Liquid concrete 10b is then poured into the interior 7b (process step D).
  • a process step E that takes place at the same time or at a different time, the hardened first shell 2a located on the first pallet 5a is turned through 180 ° using a turning device so that the tips 4 of the composite means 3 protrude downwards (see Figure 3b ).
  • the first shell 2a is then placed in a pre-calculated manner on the liquid concrete layer 10b of the second pallet 5b (process step F).
  • the peaks 4 of the composite means 3 sink into the liquid concrete layer 10b (see Figure 3d ).
  • the anchor element 23 of the fixing device 20 comes into contact with the surface of the second pallet 5b.
  • the length of the second end section 24 or the anchor element 23 is dimensioned such that the side 24 of the anchor element facing away from the first shell 2a is at approximately the same height above the plane of the first shell 2 protrudes like the peaks 4 of the composite means 3.
  • the anchor element 23 is designed as a permanent magnet and the second pallet 5b (at least in the impact area of the anchor element 23) consists of a magnetic material, the anchor element 23 is magnetically attracted to the surface of the pallet 5b and thus the entire fixing device 20 is firmly attached to it via magnetic force second pallet 5b connected. And since the fixing device 20 is embedded in the first concrete shell 2a, the first concrete shell 2a is also fixed to the second pallet 5b.
  • the second pallet 5b with the liquid concrete layer 10b and the first shell 2a stored thereon is then brought into the hardening station. Due to the fixation of the first concrete shell 2a on the second pallet 5b by means of the fixing device 20, displacements of the first concrete shell 2a relative to the second pallet 5b are prevented during this transport.
  • the liquid concrete 10b poured into the interior 7b of the second pallet 5b is hardened to form a second concrete shell 2b (second shell) (step G).
  • the first shell 2a and second shell 2b are now firmly connected to one another; displacements of the two shells 2a, 2b relative to one another are prevented by the composite means 3 embedded in concrete on both sides ( Figure 3e ).
  • the anchor element 23 of the fixing device 20 is mechanically separated in order to be able to remove the concrete double wall element 1 from the pallet 5b.
  • the fixing device 20 is severed at a point 27 located in the cavity 29 of the concrete double wall element 1 (see Figures 3e and 1 ). In this way it is ensured that the stub 28 of the fixing device 20 remaining on the concrete double wall element 1 is completely embedded in concrete when the cavity 29 is subsequently filled on the construction site and corrosion of the stub 28 is avoided.
  • the anchor element 23, which is magnetically fixed on the second pallet 5b, can then be removed - together with the formwork elements 6b' -, unscrewed from the separated end of the fixing device and used as part of a further fixing device in the production of another concrete double wall element.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Claims (7)

  1. Procédé de fabrication d'un élément à double paroi en béton (1), comprenant une première coque en béton (2a) et une deuxième coque en béton (2b) avec les étapes suivantes :
    a. Coulée de béton liquide (10a) et mise en place de moyens d'assemblage (3) dépassant par sections de ce béton liquide (10a) dans un espace intérieur (7a) formé par un coffrage (6a) sur une première palette (5a) (étape B) ;
    b. Durcissement de cette couche de béton liquide (10a) munie des moyens d'assemblage (3) pour créer une première coque en béton (2a) (étape C) ;
    c. Coulée de béton liquide (10b) dans un espace intérieur (7b) formé par un coffrage (6b) sur une deuxième palette (5b) (étape D) ;
    d. Retournement de la première coque en béton (2a) (étape E) et dépôt sur la couche de béton liquide (10b) de la deuxième palette (5b) (étape F) ;
    e. Durcissement de la couche de béton liquide (10b) se trouvant sur la deuxième palette (5b) pour créer par le biais des moyens d'assemblage (3) une deuxième coque en béton (2b) solidaire de la première coque en béton (2a) (étape G), où
    f. à l'étape B, un dispositif de fixation (20) est inséré dans le béton liquide (10a) de telle manière qu'une première section d'extrémité (21) du dispositif de fixation (20) est noyée dans le béton liquide (10a) et qu'une deuxième section d'extrémité (22) fait saillie latéralement au-delà du coffrage (6a),
    g. et par suite du dépôt de la première coque en béton (2a) sur la couche de béton liquide (10b) de la deuxième palette (5b) (étape F), un élément d'ancrage (23) prévu sur la deuxième section d'extrémité (22) du dispositif de fixation (20) est fixé à la deuxième palette (5b).
  2. Procédé selon la revendication 1,
    caractérisé en ce que l'élément d'ancrage (23) prévu sur la deuxième section d'extrémité (22) du dispositif de fixation (20) est fixé de manière amovible à la deuxième palette (5b).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que l'élément d'ancrage (23) prévu sur la deuxième section d'extrémité (22) du dispositif de fixation (20) comprend un aimant permanent qui est fixé à la deuxième palette (5b) par la force magnétique.
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce qu'on utilise comme dispositif de fixation (20) une barre d'acier (26) avec un élément d'ancrage (23) fixé à l'extrémité (25) de cette barre d'acier (26).
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que l'élément d'ancrage (23) est fixé de manière amovible à la deuxième section d'extrémité (22) du dispositif de fixation (20).
  6. Procédé selon la revendication 5,
    caractérisé en ce que l'élément d'ancrage (23) est fixé à la deuxième section d'extrémité (22) du dispositif de fixation (20) par un filetage.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que le dispositif de fixation (20) est fixé en position au moyen d'un support (30) pendant le durcissement de la première coque en béton (2a) (étape C).
EP19786766.6A 2018-10-10 2019-10-09 Procédé pour la préparation d'un élément de double paroi en béton Active EP3863820B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102018124980.2A DE102018124980B3 (de) 2018-10-10 2018-10-10 Verfahren und Halbzeug zur Herstellung eines Beton-Doppelwandelements
DE202018105793.6U DE202018105793U1 (de) 2018-10-10 2018-10-10 Halbzeug zur Herstellung eines Beton-Doppelwandelements
PCT/EP2019/077427 WO2020074617A1 (fr) 2018-10-10 2019-10-09 Procédé et demi-produit pour la préparation d'un élément de double paroi en béton

Publications (3)

Publication Number Publication Date
EP3863820A1 EP3863820A1 (fr) 2021-08-18
EP3863820B1 true EP3863820B1 (fr) 2023-12-06
EP3863820C0 EP3863820C0 (fr) 2023-12-06

Family

ID=68233992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19786766.6A Active EP3863820B1 (fr) 2018-10-10 2019-10-09 Procédé pour la préparation d'un élément de double paroi en béton

Country Status (2)

Country Link
EP (1) EP3863820B1 (fr)
WO (1) WO2020074617A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2090192A (en) * 1980-12-23 1982-07-07 Alvon Bouwsystemen Bv Method and apparatus for the manufacture of hollow elements from concrete
DE112010003523T5 (de) * 2009-09-02 2012-10-04 21St Century Structures, Llc Eingebetteter Höheneinstellmechanismus für doppelwandige Bauplatten
WO2018171893A1 (fr) * 2017-03-24 2018-09-27 Sommer Anlagentechnik Gmbh Dispositif pour fixer des éléments de paroi en béton dans un coffrage

Also Published As

Publication number Publication date
WO2020074617A1 (fr) 2020-04-16
EP3863820C0 (fr) 2023-12-06
EP3863820A1 (fr) 2021-08-18

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