EP2019175A1 - Vorgefertigtes Bauelement - Google Patents

Vorgefertigtes Bauelement Download PDF

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Publication number
EP2019175A1
EP2019175A1 EP08160483A EP08160483A EP2019175A1 EP 2019175 A1 EP2019175 A1 EP 2019175A1 EP 08160483 A EP08160483 A EP 08160483A EP 08160483 A EP08160483 A EP 08160483A EP 2019175 A1 EP2019175 A1 EP 2019175A1
Authority
EP
European Patent Office
Prior art keywords
plate
bar
sleeve
prestressing
length
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.)
Withdrawn
Application number
EP08160483A
Other languages
English (en)
French (fr)
Inventor
Matthieu Guillot
Claude Mangialenti
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.)
Bouyer Leroux Structure SAS
Original Assignee
Imerys TC SAS
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 Imerys TC SAS filed Critical Imerys TC SAS
Publication of EP2019175A1 publication Critical patent/EP2019175A1/de
Withdrawn legal-status Critical Current

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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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/22—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members built-up by elements jointed in line
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
    • 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
    • E04C2003/023—Lintels

Definitions

  • the invention relates to a prefabricated building element.
  • a prefabricated building element is used in particular to form a lintel or a building element of great length.
  • a lintel is a building element disposed horizontally above an opening of a door or window and for supporting loads, including the load of a wall disposed above.
  • a lintel is made by pouring concrete into a formwork directly on site.
  • the preparation of the formwork and the pouring of the concrete inside it and the drying of the concrete are long and costly operations.
  • the document FR 2,840,935 proposes a prefabricated building element, intended to form a lintel and comprising a plurality of hollow blocks, the element being of generally elongate shape and being equipped with prestressing bars extending longitudinally in the hollow blocks, the prestressing bars comprising in in addition to a first and a second end respectively provided with a first and a second plates, respectively bearing on a first and a second ends of the element so as to constrain it.
  • notches are made in the end blocks, each plate bearing on the corresponding end block, inside the notches.
  • the additional step of producing the notches increases the complexity of producing the prefabricated element.
  • the invention aims to overcome this disadvantage by proposing a prefabricated building element, intended to form a lintel, which is simple and fast.
  • the invention relates to a prefabricated building element, comprising at least one hollow block, the element being of generally elongate shape and being equipped with at least one prestress bar extending longitudinally in the hollow block, the prestressing bar further comprising first and second ends respectively provided with first and second plates, respectively bearing on first and second ends of the member so as to constrain it, characterized in that each plate is equipped with means for fixing the corresponding end of the prestressing bar, extending towards the inside of the block.
  • the fastening means cooperating with the ends of the bars do not extend outside the prefabricated element, so that it is not necessary to make housings or notches in the end blocks.
  • the means for fixing at least one plate comprise a recess formed therein, the corresponding end of the prestressing bar comprising an enlarged head resting on the plate and drowned in the recess.
  • this end of the prestressing bar has a thread cooperating with a nut resting on the plate.
  • the fastening means of at least one plate comprise a threaded bushing which, equipped with immobilization means in translation relative to the plate, cooperates with a corresponding threaded end of the prestressing bar.
  • the sleeve comprises a conical shaped head based on a countersink formed in the plate.
  • the sleeve comprises a cylindrical head resting on a flat stamped surface formed in the plate.
  • the countersink allows a good centering of the socket relative to the plate.
  • the sleeve is fixed to the plate by welding.
  • the sleeve is threaded on only part of its length.
  • the end of the preload bar cooperating with the bushing comprises a thread extending over a length at least equal to the length of the bushing.
  • the hollow block has a section of generally U-shaped, the base of the U comprising at least one hollow zone for the passage of prestressing bars.
  • the U-shaped section defines a formwork suitable in particular for accommodating concrete or mortar, or to house a shutter.
  • the figure 1 is a prefabricated building element 1 of generally elongate shape, intended to form a lintel and having a plurality of identical blocks 2 and arranged in line along the axis A of the element.
  • the hollow blocks have a generally U-shaped section, the base of the U having two hollow zones 3, 4 delimited by an intermediate partition 5, each hollow zone 3, 4 serving for the passage of a prestressing bar 6, 7, represented in dotted lines in figure 1 and extending parallel to the axis A of the element.
  • the branches of the U also comprise hollow zones 8 delimited by partitions 9.
  • the recessed area 10 delimited by the U is closed by means of two parallel partitions 11, 12 to the U branch and located at a distance from each other.
  • the partitions 11, 12 may be removed and comprise, for this purpose, breakers 13.
  • the prestressing bars 6, 7 each comprise a first 14 and a second end 15 respectively equipped with a first 16 and a second 17 plates, respectively bearing on a first 18 and a second 19 ends of the element 1 in order to constrain him.
  • each bar is threaded and cooperates with a corresponding nut 20.
  • the first plate 16 further comprises a recess 21.
  • the second plate 17 has two millings. Each milling cooperates with a conical head 22 of a bushing 23 extending along the axis A of the element.
  • the sockets 23 are fixed to the second plate 17 by welding.
  • the sockets 23 comprise a tapping at their end opposite the head 22. More specifically, the sockets 23 are threaded over only a part of their length, and cooperate with the second ends 15 of the corresponding prestressing bars 6, 7. threading of the second end 15 of the bars 6, 7 is of length at least equal to the length of the sockets 23.
  • the blocks 2 are first arranged in a row, the prestressing bars 6, 7 then being inserted in the hollow zones 3, 4 formed at the base of the U of each block 2.
  • the bars 6, 7 are then referred to on the corresponding bushes 23, mounted on the second plate 17.
  • the tapping of the bushing makes it possible to adjust the positioning of the bars 6, 7 with respect to the ends 18, 19 of the element.
  • the first plate 16 is then put in place and the nuts 20 are tightened until they bear on the first plate 16. In this position shown in FIG. figure 5 , the nuts 20 are embedded in the recess 21. A suitable tightening of the nuts 20 then makes it possible to preload the element 1.
  • the stress or prestressing of the construction element 1 makes it possible to withstand high bending stresses and therefore withstand high loads.
  • This variant embodiment differs from the embodiment described above in that the bushing 23 comprises a cylindrical head 22 resting on a flat stamped surface formed in the plate 17.
  • prefabricated element is intended to form a lintel, in a particular application.
  • prefabricated element according to the invention can be used to form any type of element of great length other than a lintel, without departing from the scope of the invention.
  • the invention is not limited to the sole embodiment of this prefabricated building element, described above as an example, but it embraces all variants.
  • the plates could be equipped with the same means for fixing the prestressing bars.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP08160483A 2007-07-25 2008-07-16 Vorgefertigtes Bauelement Withdrawn EP2019175A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0705425A FR2919319B1 (fr) 2007-07-25 2007-07-25 Element de construction prefabrique

Publications (1)

Publication Number Publication Date
EP2019175A1 true EP2019175A1 (de) 2009-01-28

Family

ID=39148584

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08160483A Withdrawn EP2019175A1 (de) 2007-07-25 2008-07-16 Vorgefertigtes Bauelement

Country Status (2)

Country Link
EP (1) EP2019175A1 (de)
FR (1) FR2919319B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113482238A (zh) * 2021-08-02 2021-10-08 广州金辉建设集团有限公司 Alc墙板洞口过梁一体化施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273004A (en) * 1926-03-25 1927-06-27 William Herbert Smith Improvements relating to lintels, floor beams and the like
FR2352126A1 (fr) * 1976-05-18 1977-12-16 Stic Piece d'ancrage pour beton arme
DE2836781A1 (de) * 1978-08-23 1980-03-06 Willi Clavey Vorrichtung zur aufnahme eines fertigbalkens zum ueberdecken von oeffnungen am mauerwerk
FR2840935A1 (fr) 2002-06-12 2003-12-19 Andre Loew Element de construction en maconnerie de type poutre, tel que linteau ou similaire
EP1420124A1 (de) * 2002-11-16 2004-05-19 Moeding Keramikfassaden GmbH Keramikbauelement
EP1777355A2 (de) * 2005-10-21 2007-04-25 Claudio Velo Balken oder Träger aus mindestens zwei Stahlbetonelementen hergestellt, mit einer neuen Verbindungsvorrichtung.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB273004A (en) * 1926-03-25 1927-06-27 William Herbert Smith Improvements relating to lintels, floor beams and the like
FR2352126A1 (fr) * 1976-05-18 1977-12-16 Stic Piece d'ancrage pour beton arme
DE2836781A1 (de) * 1978-08-23 1980-03-06 Willi Clavey Vorrichtung zur aufnahme eines fertigbalkens zum ueberdecken von oeffnungen am mauerwerk
FR2840935A1 (fr) 2002-06-12 2003-12-19 Andre Loew Element de construction en maconnerie de type poutre, tel que linteau ou similaire
EP1420124A1 (de) * 2002-11-16 2004-05-19 Moeding Keramikfassaden GmbH Keramikbauelement
EP1777355A2 (de) * 2005-10-21 2007-04-25 Claudio Velo Balken oder Träger aus mindestens zwei Stahlbetonelementen hergestellt, mit einer neuen Verbindungsvorrichtung.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113482238A (zh) * 2021-08-02 2021-10-08 广州金辉建设集团有限公司 Alc墙板洞口过梁一体化施工方法
CN113482238B (zh) * 2021-08-02 2022-07-15 广州金辉建设集团有限公司 Alc墙板洞口过梁一体化施工方法

Also Published As

Publication number Publication date
FR2919319B1 (fr) 2012-07-13
FR2919319A1 (fr) 2009-01-30

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