EP2868828A1 - Verstärkungsverfahren eines Bauelements durch Zusammenbau von Verstärkungsmodulen und mindestens einem Abschlusselement - Google Patents

Verstärkungsverfahren eines Bauelements durch Zusammenbau von Verstärkungsmodulen und mindestens einem Abschlusselement Download PDF

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Publication number
EP2868828A1
EP2868828A1 EP20140190570 EP14190570A EP2868828A1 EP 2868828 A1 EP2868828 A1 EP 2868828A1 EP 20140190570 EP20140190570 EP 20140190570 EP 14190570 A EP14190570 A EP 14190570A EP 2868828 A1 EP2868828 A1 EP 2868828A1
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EP
European Patent Office
Prior art keywords
reinforcement
modules
termination
hole
reinforcing
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Withdrawn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
EP20140190570
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English (en)
French (fr)
Inventor
Marc-Henry Menard
Carl REDON
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.)
M LEFEVRE
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M LEFEVRE
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 M LEFEVRE filed Critical M LEFEVRE
Publication of EP2868828A1 publication Critical patent/EP2868828A1/de
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • 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
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/18—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with metal or other reinforcements or tensioning members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0248—Increasing or restoring the load-bearing capacity of building construction elements of elements made of wood

Definitions

  • the present invention relates to the field of reinforcement of wooden construction structures (new or old, solid, glulam or assembly) extending between at least two points of support and working in flexion, traction, compression or buckling or spill.
  • reinforcing modules it is possible to use reinforcing modules to be added on one of the faces of the beam to be reinforced. However, such reinforcing modules must be transported to the final length of the reinforcement, which often imposes high constraints in terms of transport and implementation.
  • the object of the invention is therefore to overcome these disadvantages and simplify the implementation of the reinforcement by facilitating its installation on a solid wood building element or laminated wood that may have deformed compared to its original shape , for example a flexed beam.
  • the object of the invention is therefore to bring end-to-end reinforcement modules to be assembled directly on the site, for example under the beam to be reinforced, in order to ensure the mechanical continuity of the traction forces that the reinforcement must take up. assembled.
  • the invention relates to a method of reinforcing a structural element made of solid wood or laminated wood, wherein at least one connector is fastened on at least one faces of said building element at least two adjacent reinforcement modules of solid wood or glued laminated wood and assembling at least one termination element between two adjacent reinforcing modules.
  • the termination element between two adjacent reinforcement modules makes it possible to ensure the mechanical continuity of the traction forces that the assembled reinforcement must take up.
  • the termination elements may be made of metal material, fiber concrete or any other material.
  • the building elements of solid wood or laminated wood are reinforced by the integration of reinforcing modules or prostheses made of wood or glue-laminated for example on the lower surface, called the intrados or convex plane, of the building element to strengthen.
  • Such a prosthesis may be of constant or variable height and its length is often limited to the central zone of the beam where the bending moments are high.
  • the prosthesis thus contributes to increasing the inertia of the reinforced beam and can be added to it either directly, in which case the prosthesis is active only after overloading the beam, or after a so-called jacking stage consisting in creating a counter-arrow, given to the beam at the time of its strengthening with the help of jacks, so that the prosthesis is immediately in tension during the deverinage of the whole.
  • a surface of the construction element to be reinforced is brought into contact with each of the reinforcement modules and the contact surface is bonded.
  • the connectors are screws.
  • the connectors are studs sealed with a binder.
  • each reinforcement module is assembled by gluing and screwing or by gluing and broaching, for example using studs or reinforcements constituted by rods or rigid bars, for example fiberglass, carbon, steel or other ... sealed by a resin or glue simultaneously in the beam and the prosthesis.
  • the connectors may be arranged perpendicular or inclined relative to the longitudinal direction of the building element to be reinforced.
  • the connectors are studs
  • the studs are positioned in bores respectively in each of the reinforcement modules and the building element to be reinforced and the binder is injected into the holes of the studs.
  • At least one hole is punched in the corresponding reinforcement module, a first end of a stud is sealed in said hole of the reinforcement module.
  • At least one hole is pierced in said second reinforcement module, a first end of a stud is sealed in said hole of the reinforcement module. reinforcing module using a binder and attaching a second end of said stud, opposite the first sealed end, to a second end of the termination member by fastening means.
  • a plurality of termination elements is assembled respectively to one of the reinforcement modules, and two adjacent termination elements are assembled together by fixing means.
  • At least one hole is pierced in said first reinforcement module, at least one hole is pierced in a first end of the termination element, a first end of a stud is sealed in said hole of the reinforcement module with the aid of a binder and a second end of said stud, opposite the first sealed end, is fixed in the corresponding hole of the termination element by fixing means.
  • the fastening means comprise, for example, welding means, screw means, such as for example a nut cooperating with a threaded portion of the corresponding stud, glue, keys, pins, rivets or any other means appropriate fixation.
  • At least one shrinking reinforcement is positioned in a hole made respectively in each of the reinforcement modules and the beam to be reinforced, disposed beyond the end of the hole of the corresponding reinforcing module and at least one shrinking reinforcement in a hole made respectively in each of the reinforcement modules and the beam to be reinforced, disposed at the hole of the corresponding reinforcement module.
  • the binder may be a resin, for example of the epoxy type, or an adhesive, for example of the cyanoacrylate, polyurethane, formaldehyde type or any other suitable adhesive or resin.
  • a wood protection means is positioned against the fire around (s) the element (s) termination.
  • a protection of the termination elements against fire is obtained.
  • a beam 1 for example of solid wood or glued laminated, having a lower surface, said lower surface or convex plane 1a, and to be reinforced either because of a degradation of its mechanical properties, or because of an increase the load she has to bear.
  • a first reinforcement module 2a of solid wood or glued laminated wood is fixed on the lower face 1a of the beam 1 by means of a plurality of connectors 3.
  • the connectors 3 are screws, three in number, arranged inclined with respect to the longitudinal direction of the beam to be reinforced 1.
  • the connectors 3 could be arranged substantially perpendicular to the longitudinal direction of the beam to be reinforced. 1. It should be noted that a number of connectors could be greater than or equal to one.
  • the connectors 3 may be studs sealed by a binder 4 as visible on the figure 2 , or reinforcements constituted by rods or rigid bars.
  • the connectors 3 are positioned in bores 1b made respectively in the first reinforcement module 2a and in the beam 1 to be reinforced.
  • the termination element 5 is made of concrete, composite reinforced with carbon fibers or any other material.
  • a hole 8a, 9a is drilled respectively in the first reinforcement module 2a and in a side wall 5a of the termination element 5, forming a first end.
  • a first end of a pin 6 is then sealed in said hole 8a of the first reinforcement module 2a with the aid of a binder 7.
  • the stud 6 and the binder 7 form the fastening means 6, 7 of the metal termination element 5 to the first reinforcement module 2a.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9a of the termination element 5 and fixed by a nut 10 cooperating with a threaded portion of the corresponding stud 6.
  • the fixing means 6, 7 of the metal termination element 5 to the first reinforcement module 2a are two in number. However, it would be possible to provide a number of fastening means greater than two, in particular for example greater than or equal to one, for example greater than or equal to four.
  • a second reinforcement module 2b solid wood or laminated wood, identical to the first reinforcement module 2a, is fixed on the lower face 1a of the beam 1 in the same manner as the fixing of the first reinforcement module 2a. That is to say, the second reinforcement module 2b is fixed to the beam 1 by means of a plurality of connectors 3.
  • the connectors 3 are screws, of which there are three, arranged in an inclined manner with respect to the longitudinal direction of the beam to be reinforced 1.
  • the connectors 3 could be arranged substantially perpendicular to the axis perpendicular to the longitudinal direction of the beam to be reinforced 1. It will be noted that a number of connectors could be greater than or equal to one.
  • each reinforcement module 2a, 2b is fixed by at least one connector 3 on a surface of the beam 1 to be reinforced.
  • the material termination element 5 is fixed to the second reinforcement module 2b in a manner identical to the attachment to the first reinforcement module 2a.
  • a hole 8b, 9b is respectively drilled in the second reinforcement module 2b and in a second lateral wall 5b of the termination element 5, forming a second end.
  • a first end of a stud 6 is then sealed in said hole 8b of the second reinforcement module 2b by means of a binder 7.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding 9b hole of the element of end 5 and fixed by a nut 10 cooperating with a threaded portion of the corresponding pin 6.
  • each reinforcement module 2a, 2b is assembled by gluing and screwing or by gluing and stitching to the lower surface 1a of the beam to be reinforced 1 and the reinforcement modules 2a, 2b are assembled together by means of the termination element 5.
  • a wood protection means 11 against fire is fixed around the termination element 5, for example by means of screws.
  • the lower surface 1a of the beam to be reinforced 1 is glued by glue 12 with each of the reinforcement modules 2a, 2b.
  • reinforcements 13 such as for example screws or rods, are positioned upstream of the bores 8a, 8b made in the reinforcement modules 2a, 2b and at these bores 8a, 8b.
  • the reinforcements may be made of metallic material.
  • These reinforcements 13 are intended to provide the hooping of the reinforcement modules 2a, 2b and the beam to be reinforced 1. In practice, these rods or shrinking screws 13 are inserted into bores (not referenced) made perpendicular to the studs 6 in the modules reinforcement 2a, 2b and in the beam to be reinforced 1.
  • anchoring length of the studs 6 in the corresponding reinforcement module 2a, 2b can be calculated and depends on the arrow to be applied to the beam.
  • this anchor length may be greater than 1m.
  • the reinforcement modules 2a, 2b are attached to the lower surface 1a of the beam 1 to be reinforced in the same manner as the fixing method described with reference to FIG. figure 1 .
  • a first reinforcement module 2a made of solid wood or glued laminated wood is fixed on the lower face 1a of the beam 1 by means of a plurality of connectors 3.
  • the connectors 3 are studs sealed by a binder 4.
  • the studs 3 are three in number and are arranged inclined with respect to the longitudinal direction of the beam to be reinforced 1.
  • the connectors 3 could be arranged substantially perpendicular to the longitudinal direction of the beam to be reinforced 1. It should be noted that one could provide a number of connectors greater than or equal to one.
  • the connectors 3 may be reinforcements constituted by rods or rigid bars, sealed by a binder 4 or screws as visible on the figure 1 .
  • the connectors 3 are made of, for example, fiberglass, carbon, steel or other ... and are sealed with a resin, for example of the epoxy type, or an adhesive, for example cyanoacrylate type, simultaneously in the beam 1 and the reinforcement module 2a.
  • the connectors 3 are positioned in bores 1b made respectively in the first reinforcement module 2a and in the beam 1 to be reinforced.
  • a hole 8a, 9a is drilled respectively in the first reinforcement module 2a and in a side wall 15a of the termination member 15, forming a first end.
  • a first end of a stud 6 is then sealed in said hole 8a of the first reinforcement module 2a with the aid of a binder 7.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9a of the first termination element 15 and fixed by a nut 10 cooperating with a threaded portion of the corresponding pin 6.
  • a second termination element for example made of metallic material 16, for example in the form of a steel casing, is fixed to the second reinforcement module 2b according to the following method:
  • a hole 8b, 9b is drilled respectively in the second reinforcement module 2b and in a side wall 16a of the termination element 16 forming a first end.
  • a first end of a stud 6 is then sealed in said hole 8b of the second reinforcement module 2b by means of a binder 7.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9b of the second termination element 16 and fixed by a nut 10 cooperating with a threaded portion of the corresponding stud 6.
  • the fixing means 6, 7 are two in number per reinforcement module 2a, 2b. However, one could foresee a number of fastening means greater than one, in particular for example equal to four per reinforcement module 2a, 2b.
  • the second side walls 15b, 16b, forming the second ends of the two adjacent end members 15, 16 are assembled together by fixing means, such as for example one or more bolts 17 inserted into holes (not referenced) made in each second side walls 15b, 16b.
  • the two termination elements 15, 16 could be welded when they are made of metallic material.
  • the termination elements 15, 16 are made of concrete, composite reinforced with carbon fibers or any other material.
  • the beam 1 is reinforced by the reinforcing modules 2a, 2b, 2n, 2 (n + 1) assembled to the lower surface 1a of the beam 1 in a manner identical to the assembly described according to the figure 1 .
  • Each of the reinforcement modules 2a, 2b, 2n, 2 (n + 1) made of solid wood or laminated wood is fixed on the lower face 1a of the beam 1 by means of a plurality of screws 3, to the number three, arranged in an inclined manner with respect to the longitudinal direction of the beam to be reinforced 1.
  • the connectors 3 could be arranged substantially perpendicular to the longitudinal direction of the beam to be reinforced 1. It should be noted that one could provide a number of connectors greater than or equal to one.
  • the connectors may be studs sealed by a binder, or reinforcements constituted by rods or rigid bars.
  • the binder can be, for example, a resin, for example of the epoxy type, or an adhesive, for example of the cyanoacrylate type, injected simultaneously into the beam 1 and the associated reinforcement module 2a, 2b, 2n, 2 (n + 1).
  • the connectors 3 are positioned in bores 1b made respectively in each of the reinforcement modules 2a, 2b, 2n, 2 (n +1) and in the beam 1 to reinforce.
  • Two adjacent reinforcing modules 2a, 2b and 2n, 2 (n + 1) are connected together by means of two terminal elements 15, 16, for example made of metallic material.
  • two terminal elements 15, 16, for example made of metallic material for example made of metallic material.
  • a single termination element allows the connection of two adjacent reinforcing modules, as illustrated in FIG. figure 1 .
  • the material termination elements 15, 16 are assembled to the corresponding reinforcement module 2a, 2b, 2n, 2 (n + 1) according to the method described with reference to FIG. figure 1 .
  • a hole 8a, 8b, 8n, 8 (n + 1) is drilled in each of the reinforcement modules 2a, 2b, 2n, 2 (n + 1) and a hole 9a, 9b is drilled in a side wall 15a, 16a of the corresponding termination element 15, 16. It is then sealed a first end of a stud 6 in said hole each of the holes 8a, 8b, 8n, 8 (n + 1) of the corresponding reinforcement module 2a, 2b, 2n , 2 (n + 1) using a binder 7. The second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9a, 9b of the end elements 15, 16 and fixed by a nut 10 cooperating with a threaded portion of the corresponding stud 6. Alternatively, one could plan to set the second end of the stud 6 by welding means or by glue.
  • the second lateral walls 15b, 16b of two adjacent termination elements 15, 16 are assembled together by fastening means, such as for example one or more bolts 17 inserted in holes (not referenced) practical in each of the second side walls 15b , 16b.
  • fastening means such as for example one or more bolts 17 inserted in holes (not referenced) practical in each of the second side walls 15b , 16b.
  • the two metal termination elements 15, 16 could be welded.
  • two identical termination elements 20, 21 are respectively fixed to one of the reinforcement modules 2a, 2b.
  • the reinforcement modules 2a, 2b are attached to the lower surface 1a of the beam 1 to be reinforced in the same manner as the fixing method described with reference to FIG. figure 1 . Fixing the reinforcing modules 2a, 2b by screws or studs sealed with a binder or any other fixing means mentioned with reference to the Figures 1 to 3 will not be further described.
  • a first termination element made of material 20, for example made of metallic material, for example in the form of a "T”, is fixed to the first reinforcement module 2a according to the following method:
  • a hole 8a, 9a is drilled respectively in the first reinforcement module 2a and in a side wall 20a of the termination member 20, forming a first end.
  • a first end of a stud 6 is then sealed in said hole 8a of the first reinforcement module 2a with the aid of a binder 7.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9a of the first termination element 20 and fixed by a nut 10 cooperating with a threaded portion of the corresponding pin 6.
  • a second termination element 21, for example made of metallic material, for example in the form of a "T”, is fixed to the first reinforcement module 2b according to the following method:
  • a hole 8b, 9b is respectively drilled in the second reinforcement module 2b and in a side wall 21a of the termination member 21, forming a first end.
  • a first end of a stud 6 is then sealed in said hole 8b of the second reinforcement module 2b by means of a binder 7.
  • the second end of the stud 6, opposite the first sealed end, is inserted into the corresponding hole 9b of the second termination element 21 and fixed by a nut 10 cooperating with a threaded portion of the corresponding pin 6.
  • Each of the termination elements 20, 21 comprises a lateral end portion 20a, 21a, extending in a plane perpendicular to the longitudinal direction of the beam 1 and a longitudinal portion 20b, 21b projecting axially from the lateral portion 20a, 21a extending in a plane parallel to the longitudinal direction of the beam 1.
  • the fastening means 6, 7 of the termination elements 20, 21 to the corresponding reinforcement module are two in number per reinforcement module 2a, 2b. However, one could foresee a number of fastening means greater than or equal to one, in particular for example equal to four per reinforcement module 2a, 2b.
  • the longitudinal portions 20b, 21b, forming the second ends of the two adjacent end members 20, 21 are assembled together by fixing means, such as for example one or more bolts 17 inserted into vertical bores (not referenced) made in each longitudinal portions 20b, 21b.
  • the two termination elements 20, 21 could be welded when they are made of metallic material.
  • the termination elements are made of concrete, composite reinforced with carbon fibers or any other material.
  • a wood protection means (not shown) can be positioned against the fire around each of the termination members 20, 21.
  • the lower surface 1a of the beam to be reinforced 1 is glued by glue (not shown) with each reinforcement modules 2a, 2b.
  • a termination element 23 is fixed to each of the reinforcement modules 2a, 2b.
  • the reinforcement modules 2a, 2b are attached to the lower surface 1a of the beam 1 to be reinforced in the same manner as the fixing method described with reference to FIG. figure 1 .
  • Fixing reinforcement modules 2a, 2b by screws or studs sealed with a binder or any other means of attachment referred to with reference to Figures 1 to 3 will not be further described.
  • the termination element 23, for example made of metallic material is in the form of a substantially flat plate and is fixed to the first reinforcement module 2a according to the following method:
  • a hole 8a is drilled in the first reinforcement module 2a, and a first end of a stud 6 is then sealed in the said hole 8a of the first reinforcement module 2a with the aid of a binder 7.
  • the second end of the stud 6, opposite to the first sealed end, is fixed to a first end 23a of the termination element 23 by welding means 25.
  • a bonding attachment could be provided.
  • the termination element 23 is fixed to the second reinforcement module 2b according to the following method:
  • a hole 8b is drilled in the second reinforcing module 2b and a first end of a stud 6 is then sealed in the said hole 8b of the second reinforcing module 2b using a binder 7.
  • the second end of the stud 6, opposite to the first sealed end, is fixed to a second end 23b of the termination element 23 by welding means 25. Alternatively, it could provide an attachment with an adhesive.
  • the fixing means 6, 7 are one by reinforcement module 2a, 2b.
  • the reinforcement method is not limited to the use of two or three reinforcement modules. As a variant, it would be possible to use a number of reinforcement modules greater than three, in order, for example, to repair a large area or length of a damaged beam.
  • metal frames 13 illustrated in FIG. figure 1 may be used in all the embodiments described above.
  • the invention is suitable for any structure whose surface must be repaired, both during reinforcement work and at the end thereof.
  • the invention it is possible to restore resistance to bending, tensile, compressive or buckling or to the spillover to the timber or glued laminated beam which is damaged by, on the one hand, fastening via at least one connector, supplemented or not by an injection of resin or glue, reinforcement modules of wood or laminated on at least one surface of the damaged beam and secondly by a linear assembly of the modules of reinforcement between them by means of termination elements.
  • the damaged wooden beam is thus restored directly on site thanks to the reinforcement method described.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP20140190570 2013-10-30 2014-10-28 Verstärkungsverfahren eines Bauelements durch Zusammenbau von Verstärkungsmodulen und mindestens einem Abschlusselement Withdrawn EP2868828A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1360617A FR3012496B1 (fr) 2013-10-30 2013-10-30 Procede de renforcement d'un element de construction par assemblage de modules de renfort et d'au moins un element de terminaison

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EP2868828A1 true EP2868828A1 (de) 2015-05-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3044687A1 (fr) * 2015-12-07 2017-06-09 M Lefevre Procede de renforcement d'un element de construction par assemblage de modules de renfort et d'au moins une plaque connectee aux modules de renfort

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034224A2 (de) * 1980-02-15 1981-08-26 Emergo Chemical Coating, N.V. Verfahren zum Verstärken von Holzbalken und so erhaltene Balken
GB2150969A (en) * 1983-12-06 1985-07-10 Dinardo And Partners Restoring and strengthening of timber components
EP1452670A1 (de) * 2003-02-28 2004-09-01 M. Lefevre S.A. Verfahren zur Verstärkung eines Bauteils und Bauteil

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034224A2 (de) * 1980-02-15 1981-08-26 Emergo Chemical Coating, N.V. Verfahren zum Verstärken von Holzbalken und so erhaltene Balken
GB2150969A (en) * 1983-12-06 1985-07-10 Dinardo And Partners Restoring and strengthening of timber components
EP1452670A1 (de) * 2003-02-28 2004-09-01 M. Lefevre S.A. Verfahren zur Verstärkung eines Bauteils und Bauteil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3044687A1 (fr) * 2015-12-07 2017-06-09 M Lefevre Procede de renforcement d'un element de construction par assemblage de modules de renfort et d'au moins une plaque connectee aux modules de renfort

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FR3012496B1 (fr) 2016-05-20
FR3012496A1 (fr) 2015-05-01

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