EP0034224A2 - Process for reinforcing wooden beams, and beams so obtained - Google Patents

Process for reinforcing wooden beams, and beams so obtained Download PDF

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Publication number
EP0034224A2
EP0034224A2 EP80200431A EP80200431A EP0034224A2 EP 0034224 A2 EP0034224 A2 EP 0034224A2 EP 80200431 A EP80200431 A EP 80200431A EP 80200431 A EP80200431 A EP 80200431A EP 0034224 A2 EP0034224 A2 EP 0034224A2
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EP
European Patent Office
Prior art keywords
beams
layer
fibers
holes
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Withdrawn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
EP80200431A
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German (de)
French (fr)
Other versions
EP0034224A3 (en
Inventor
Dirk De Neef
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.)
EMERGO CHEMICAL COATING NV
Original Assignee
EMERGO CHEMICAL COATING NV
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 BE2/58408A external-priority patent/BE881734A/en
Application filed by EMERGO CHEMICAL COATING NV filed Critical EMERGO CHEMICAL COATING NV
Publication of EP0034224A2 publication Critical patent/EP0034224A2/en
Publication of EP0034224A3 publication Critical patent/EP0034224A3/en
Withdrawn legal-status Critical Current

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    • 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
    • E04C3/185—Synthetic reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
    • B27M3/0046—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally by rods or tie wires
    • 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
    • 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
    • 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
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements

Definitions

  • the present invention relates to a method for reinforcing wooden beams and extends to the wooden beams thus reinforced.
  • the invention is primarily, but not exclusively, aimed at restoring old beams or strengthening existing structural beams with a view to adapting their resistance to new conditions of use.
  • the system according to the present invention belongs to the first group.
  • the present invention proposes to offer an effective and perfectly satisfactory solution to this problem, that is to say of the meeting of two beams of any size in a mechanical whole.
  • Reinforcing beam 1 is an old gnawed beam, the bad parts of which must be completely removed and any hollows must be filled with an appropriate epoxy resin or a suitable mixture of epoxy resin.
  • the contact surface, to which the new reinforcement beam 2 will apply, must be carefully flattened with the plane and the beam must be carefully smoothed over its entire surface by sandblasting.
  • Said contact surface is coated with a layer of glass fibers 3 of 300-400 g / m 2 , on which the reinforcing beam 2 is placed.
  • anchoring holes 4 which form a vertical angle of about 45 ° relative to the transverse section plane of the beams.
  • these anchor holes are staggered in two rows. The number, interval and vertical angle of the holes vary from case to case.
  • each anchoring hole 4 is inserted a reinforcing rod 5, for example in the form of a synthetic resin rod reinforced with glass fibers.
  • a reinforcing rod 5 for example in the form of a synthetic resin rod reinforced with glass fibers.
  • the joints between the two beams are then closed using a formwork, a cement-based mortar or synthetic resin, or bituminous canvas.
  • a suitable mixture based on epoxy resins is then introduced by casting or injection so as to completely fill the holes and completely impregnate the layer of fibers.
  • the epoxy resin mixture is sufficiently cured after approximately 24 hours.
  • the hole plug is removed and the remaining slots are stuffed by injecting an epoxy resin or other suitable product.
  • the soiled parts of the beam are finally thoroughly cleaned and, if necessary, painted.
  • An oak wood beam composed of two beams glued together by the method according to the invention and having a length of 2000 mm, a height of 400 mm and a width of 200 mm, is placed on two supports spaced 1700 mm apart and gradually charged in the middle.
  • the following deflections are measured: 3.5 mm under a load of 10,000 kg, 5.48 mm under a load of 15,000 kg and 6.85 mm under a load of 18,000 kg. Break at 30,000 kg.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

In a process for strengthening wooden beams, a strengthening beam is glued to the main beam over the whole of its length. The two beam are positioned in the correct register w.r.t. each other with a layer of a fibre mat between the beams. A number of anchoring holes are drilled through the beams and the fibre mat and strengthening rods are introduced into the holes. The seam between the two beams is then sealed and an epoxy resin (mixt.) is poured into the anchor holes until these are completely full and the fibre mat is saturated. Process allows in-situ restoration of old beams or strengthening of existing beams to provide extra load bearing capacity.

Description

La présente invention a trait à un procédé de renforcement de poutres de bois et s'étend aux poutres de bois ainsi renforcées.The present invention relates to a method for reinforcing wooden beams and extends to the wooden beams thus reinforced.

L'invention vise en tout premier lieu, mais pas exclusivement, la restauration de vieilles poutres ou le renforcement de poutres de charpentes existantes en vue de l'adaptation de leur résistance à de nouvelles conditions de mise en oeuvre.The invention is primarily, but not exclusively, aimed at restoring old beams or strengthening existing structural beams with a view to adapting their resistance to new conditions of use.

On connaît déjà plusieurs procédés de renforcement de poutres de bois, caractérisés, les uns, par la fixation d'une nouvelle poutre à la poutre à renforcer et, les autres, par l'emploi de tiges de renforcement métalliques (brevet allemand n° 547.576). Le système selon la présente invention appartient au premier groupe.Several methods of reinforcing wooden beams are already known, characterized, some by fixing a new beam to the beam to be reinforced and, others, by the use of metal reinforcing rods (German patent n ° 547.576 ). The system according to the present invention belongs to the first group.

L'application du système comportant la réunion de deux poutres sous forme d'un ensemble constituant un tout mécanique bien défini s'est limitée jusqu'à présent à la réunion de poutres de section relativement réduite. La raison en est que les techniques connues rencontrent de grandes difficultés et s'avèrent même inapplicables lorsqu'il s'agit de réunir des poutres de grandes dimensions, et cela surtout lorsque le travail doit être exécuté au chantier.The application of the system comprising the joining of two beams in the form of an assembly constituting a well defined mechanical whole has hitherto been limited to the joining of beams of relatively small section. The reason is that the known techniques encounter great difficulties and even prove to be inapplicable when it is a question of joining together large beams, and this especially when the work has to be executed on site.

Aussi, la présente invention se propose-t-elle d'offrir une solution efficace et parfaitement satisfaisante de ce problème, c'est-à-dire de la-réunion de deux poutres de dimensions quelconques en un tout mécanique.Also, the present invention proposes to offer an effective and perfectly satisfactory solution to this problem, that is to say of the meeting of two beams of any size in a mechanical whole.

A cet effet, le procédé selon l'invention concernant la fixation d'une poutre de renforcement de bois sur ou contre une poutre de bois à renforcer, comporte au moins les stades suivants :

  • a) mise en contact mutuel des deux poutres à réunir dans la position requise avec intercalation d'une couche de fibres;
  • b) perçage d'une pluralité de trous d'ancrage à travers les deux poutres et la couche de fibres;
  • c) introduction de tiges d'armature dans les trous ainsi obtenus;
  • d) obturation des joints entre les deux poutres; et
  • e) introduction par coulage ou par injection d'une résine époxy ou d'un mélange de résines époxy dans lesdits trous d'ancrage jusqu'à leur remplissage total et jusqu'à l'imprégnation totale de la couche de fibres.
To this end, the method according to the invention concerning the fixing of a wooden reinforcing beam on or against a wooden beam to be reinforced, comprises at least the following stages:
  • a) mutual contact of the two beams to be brought together in the required position with the insertion of a layer of fibers;
  • b) drilling a plurality of anchor holes through the two beams and the fiber layer;
  • c) introduction of reinforcing rods into the holes thus obtained;
  • d) sealing of the joints between the two beams; and
  • e) introduction by casting or by injection of an epoxy resin or a mixture of epoxy resins into said anchoring holes until they are completely filled and until the fiber layer is completely impregnated.

Les caractéristiques et avantages du système selon l'invention ressortiront plus clairement de la description détaillée suivante d'un exemple de mise en oeuvre, donnée sans intention restrictive aucune et illustrée par le dessin annexé, où

  • la figure 1 représente une poutre renforcée par le système selon l'invention en vue latérale; et
  • la figure 2 représente une vue d'en dessus de la poutre renforcée selon la figure 1.
The characteristics and advantages of the system according to the invention will emerge more clearly from the following detailed description of an example of implementation, given without any restrictive intention and illustrated by the appended drawing, where
  • Figure 1 shows a beam reinforced by the system according to the invention in side view; and
  • FIG. 2 represents a top view of the reinforced beam according to FIG. 1.

La poutre à renforcer 1 est une vieille poutre rongée, dont les mauvaises parties doivent être totalement enlevées et les creux éventuels doivent être remplis d'une résine époxy appropriée ou d'un mélange approprié de résine époxy.Reinforcing beam 1 is an old gnawed beam, the bad parts of which must be completely removed and any hollows must be filled with an appropriate epoxy resin or a suitable mixture of epoxy resin.

Il s'agit de même des têtes, ce qui exige la mise en oeuvre d'un coffrage à enlever ultérieurement.It is the same heads, which requires the implementation of a formwork to remove later.

La surface de contact, à laquelle s'appliquera la nouvelle poutre de renforcement 2, doit être soigneusement aplanie au rabot et la poutre doit être soigneusement lissée sur toute sa surface par sablage.The contact surface, to which the new reinforcement beam 2 will apply, must be carefully flattened with the plane and the beam must be carefully smoothed over its entire surface by sandblasting.

Ladite surface de contact est revêtue d'une couche de fibres de verre 3 de 300-400 g/m2, sur laquelle on dispose la poutre de renforcement 2.Said contact surface is coated with a layer of glass fibers 3 of 300-400 g / m 2 , on which the reinforcing beam 2 is placed.

Après l'alignement mutuel des deux poutres 1 et 2 est percée une pluralité de trous d'ancrage 4, qui forment un angle vertical d'environ 45° par rapport au plan de coupe transversal des poutres. Comme le montre la figure 2, ces trous d'ancrage sont disposés en quinconce en deux rangées. Le nombre, l'intervalle et l'angle vertical des trous varient d'un cas à l'autre.After the mutual alignment of the two beams 1 and 2 is pierced a plurality of anchoring holes 4, which form a vertical angle of about 45 ° relative to the transverse section plane of the beams. As shown in Figure 2, these anchor holes are staggered in two rows. The number, interval and vertical angle of the holes vary from case to case.

Dans chaque trou d'ancrage 4 est insérée une tige d'armature 5, par exemple sous forme d'une tige de résine synthétique armée de fibres de verre. Les joints entre les deux poutres sont ensuite obturés au moyen d'un coffrage, d'un mortier à base de ciment ou de résine synthétique, ou de toile bituminée.In each anchoring hole 4 is inserted a reinforcing rod 5, for example in the form of a synthetic resin rod reinforced with glass fibers. The joints between the two beams are then closed using a formwork, a cement-based mortar or synthetic resin, or bituminous canvas.

Par les trous d'ancrage est ensuite introduit par coulage ou par injection un mélange approprié à base de résines époxy de manière à remplir totalement les trous et à imprégner totalement la couche de fibres.Through the anchoring holes, a suitable mixture based on epoxy resins is then introduced by casting or injection so as to completely fill the holes and completely impregnate the layer of fibers.

Le mélange à base de résines époxy est suffisamment durci après une durée d'environ 24 heures. L'obturation des trous est enlevée et les fentes restantes sont bourrées par injection d'une résine époxy ou d'un autre produit approprié.The epoxy resin mixture is sufficiently cured after approximately 24 hours. The hole plug is removed and the remaining slots are stuffed by injecting an epoxy resin or other suitable product.

Les parties salies de la poutre sont finalement soigneusement nettoyées et, le cas échéant, peintes.The soiled parts of the beam are finally thoroughly cleaned and, if necessary, painted.

Une poutre de bois de chêne, composée de deux poutres collées ensemble par le procédé selon l'invention et accusant une longueur de 2000 mm, une hauteur de 400 mm et une largeur de 200 mm, est disposée sur deux appuis distants de 1700 mm et chargée progressivement en son milieu. Les flèches suivantes sont mesurées : 3,5 mm sous une charge de 10 000 kg, 5,48 mm sous une charge de 15 000 kg et 6,85 mm sous une charge de 18 000 kg. Rupture à 30 000 kg.An oak wood beam, composed of two beams glued together by the method according to the invention and having a length of 2000 mm, a height of 400 mm and a width of 200 mm, is placed on two supports spaced 1700 mm apart and gradually charged in the middle. The following deflections are measured: 3.5 mm under a load of 10,000 kg, 5.48 mm under a load of 15,000 kg and 6.85 mm under a load of 18,000 kg. Break at 30,000 kg.

Claims (9)

1.- Procédé de renforcement de poutres de bois au moyen d'une poutre de renforcement y appliquée et collée sur toute sa longueur, caractérisé en ce qu'il comporte au moins les stades successifs suivants : a) mise en contact mutuel des deux poutres (1, 2) à réunir dans la position requise avec intercalation d'une couche de fibres (3); b) perçage d'une pluralité de trous d'ancrage (4) à travers les deux poutres et la couche de fibres; c) introduction de tiges d'armature (5) dans les trous ainsi obtenus; d) obturation des joints entre les deux poutres; et e) introduction par coulage ou par injection d'une résine époxy ou d'un mélange de résines époxy dans lesdits trous d'ancrage (4) jusqu'à leur remplissage total et jusqu'à l'imprégnation totale de la couche de fibres (3). 1.- Method for reinforcing wooden beams by means of a reinforcing beam applied and glued over its entire length, characterized in that it comprises at least the following successive stages: a) bringing the two beams (1, 2) into mutual contact to be brought together in the required position with the insertion of a layer of fibers (3); b) drilling a plurality of anchoring holes (4) through the two beams and the layer of fibers; c) introduction of reinforcing rods (5) into the holes thus obtained; d) sealing of the joints between the two beams; and e) introduction by casting or by injection of an epoxy resin or of a mixture of epoxy resins into said anchoring holes (4) until their complete filling and until the total impregnation of the layer of fibers ( 3). 2.- Procédé selon la revendication 1, caractérisé en ce que les faces qui se regardent des deux poutres (1, 2) sont au préalable soigneusement rabotées et sablées.2.- Method according to claim 1, characterized in that the facing faces of the two beams (1, 2) are first carefully planed and sanded. 3.- Procédé selon la revendication 1, caractérisé en ce que ladite couche de fibres (3) est une couche de fibres de verre accusant un poids spécifique de 300-400 g/m2.3.- Method according to claim 1, characterized in that said layer of fibers (3) is a layer of glass fibers having a specific weight of 30 0 - 400 g / m 2 . 4.- Procédé selon la revendication 1, caractérisé en ce que lesdits trous d'ancrage (4) sont percés sous un angle d'environ 45° par rapport au plan de coupe transversal des poutres (1, 2).4.- Method according to claim 1, characterized in that said anchoring holes (4) are drilled at an angle of about 45 ° relative to the transverse cutting plane of the beams (1, 2). 5.- Procédé selon la revendication 1, caractérisé en ce que lesdites tiges d'armature (5) sont des tiges de résine synthétique armées de fibres de verre.5.- Method according to claim 1, characterized in that said reinforcing rods (5) are synthetic resin rods reinforced with glass fibers. 6.- Procédé selon la revendication 1, caractérisé en ce que l'obturation des joints s'effectue au moyen d'un coffrage et/ou d'un mortier approprié à base de ciment ou de résine synthétique ou de toile bituminée, ce moyen d'obturation étant ensuite enlevé après la prise de la résine époxy injectée.6.- Method according to claim 1, characterized in that the sealing of the joints is carried out by means of a formwork and / or a suitable mortar based on cement or synthetic resin or bituminous canvas, this means shutter then being removed after setting the injected epoxy resin. 7.- Procédé selon la revendication 2, caractérisé en ce que les mauvaises parties de la poutre à renforcer (1) sont au préalable totalement enlevées.7.- Method according to claim 2, characterized in that the bad parts of the beam to be reinforced (1) are previously completely removed. 8.- Procédé selon la revendication 2 ou 7, caractérisé en ce que la poutre à renforcer (1) est nettoyée et lissée par sablage sur toute sa surface.8.- Method according to claim 2 or 7, characterized in that the beam to be reinforced (1) is cleaned and smoothed by sanding over its entire surface. 9.- Poutre collée (1, 2), obtenue par un procédé selon une ou plusieurs des revendications précédentes.9.- Glued beam (1, 2), obtained by a process according to one or more of the preceding claims.
EP80200431A 1980-02-15 1980-05-08 Process for reinforcing wooden beams, and beams so obtained Withdrawn EP0034224A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE58408 1980-02-15
BE2/58408A BE881734A (en) 1980-02-15 1980-02-15 METHOD FOR STRENGTHENING WOODEN BEAMS AND Beams BEEN THEREFORE

Publications (2)

Publication Number Publication Date
EP0034224A2 true EP0034224A2 (en) 1981-08-26
EP0034224A3 EP0034224A3 (en) 1982-09-15

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EP80200431A Withdrawn EP0034224A3 (en) 1980-02-15 1980-05-08 Process for reinforcing wooden beams, and beams so obtained

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134956A (en) * 1983-02-10 1984-08-22 Rickards Timber Treatment Limi Upgrading or restoring a timber beam
FR2546439A1 (en) * 1983-05-25 1984-11-30 Cougnaud Fils Sa Method for assembling plane strips and panel thus obtained
GB2150969A (en) * 1983-12-06 1985-07-10 Dinardo And Partners Restoring and strengthening of timber components
EP0163781A1 (en) * 1984-05-02 1985-12-11 Groot Lemmer B.V. Method and device for manufacturing a composite prestressed wooden beam
FR2585393A1 (en) * 1985-07-29 1987-01-30 Renofors France Beam or other construction element made of timber which is reinforced by means of a reinforcing element, and method for its manufacture
EP1596017A2 (en) * 2004-05-06 2005-11-16 Berg, Gerhard, Prof.Dr.-Ing. Method for increasing the load capacity, the stiffness and the damping of vibrations of a wooden joist ceiling arrangement and wooden joist ceiling arrangement with increased load capacity, stiffness and damping of vibrations.
FR2871089A1 (en) * 2004-06-02 2005-12-09 Christian Plee Wooden structure e.g. boarder floor, reinforcement and/or restitution method for woodwork construction field, involves forming recesses in stiffening girder, fixing girder on wooden structure, and injecting resin in recesses
WO2008148897A1 (en) * 2007-06-06 2008-12-11 Mikel Landa Esparza Method for in situ restoration of wood beams
WO2010057243A1 (en) * 2008-11-18 2010-05-27 Patrick Thornton Timber structural member
US8910454B2 (en) 2008-02-01 2014-12-16 Loggo IP Pty. Ltd. Timber structural member
FR3012496A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD OF REINFORCING A BUILDING ELEMENT BY ASSEMBLING REINFORCING MODULES AND AT LEAST ONE TERMINATION ELEMENT
FR3012497A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD FOR REINFORCING A WOODEN BUILDING ELEMENT BY ASSEMBLING A POST-TENSIONED REINFORCING MODULE
FR3012495A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD FOR REINFORCING A WOODEN BUILDING ELEMENT WITH A REINFORCING MODULE
NL2014680A (en) * 2015-04-20 2016-10-24 Sealteq│Group B V Reinforcement of a masonry wall.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310120A (en) * 1963-03-06
CH398023A (en) * 1962-04-03 1965-08-31 Kengeter Kurt Wood construction element and its use
NL7207255A (en) * 1972-05-29 1973-12-03 Comatting woodworm - esp in building's of historic interest by injected reinforcement
FR2195745A1 (en) * 1972-08-10 1974-03-08 Balm Bv
DE2451639A1 (en) * 1974-10-30 1976-05-06 Hans Binker Increasing strength of woods and building materials - rods of glass fibre reinforced material inserted into cut notches
DE2510262A1 (en) * 1975-03-08 1976-09-09 Hans Binker Strength improvement for timber beams - uses fibre bundles and webbing embedded in grooves along longitudinal faces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1310120A (en) * 1963-03-06
CH398023A (en) * 1962-04-03 1965-08-31 Kengeter Kurt Wood construction element and its use
NL7207255A (en) * 1972-05-29 1973-12-03 Comatting woodworm - esp in building's of historic interest by injected reinforcement
FR2195745A1 (en) * 1972-08-10 1974-03-08 Balm Bv
DE2451639A1 (en) * 1974-10-30 1976-05-06 Hans Binker Increasing strength of woods and building materials - rods of glass fibre reinforced material inserted into cut notches
DE2510262A1 (en) * 1975-03-08 1976-09-09 Hans Binker Strength improvement for timber beams - uses fibre bundles and webbing embedded in grooves along longitudinal faces

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2134956A (en) * 1983-02-10 1984-08-22 Rickards Timber Treatment Limi Upgrading or restoring a timber beam
FR2546439A1 (en) * 1983-05-25 1984-11-30 Cougnaud Fils Sa Method for assembling plane strips and panel thus obtained
GB2150969A (en) * 1983-12-06 1985-07-10 Dinardo And Partners Restoring and strengthening of timber components
EP0163781A1 (en) * 1984-05-02 1985-12-11 Groot Lemmer B.V. Method and device for manufacturing a composite prestressed wooden beam
FR2585393A1 (en) * 1985-07-29 1987-01-30 Renofors France Beam or other construction element made of timber which is reinforced by means of a reinforcing element, and method for its manufacture
EP1596017A2 (en) * 2004-05-06 2005-11-16 Berg, Gerhard, Prof.Dr.-Ing. Method for increasing the load capacity, the stiffness and the damping of vibrations of a wooden joist ceiling arrangement and wooden joist ceiling arrangement with increased load capacity, stiffness and damping of vibrations.
EP1596017A3 (en) * 2004-05-06 2007-04-11 Berg, Gerhard, Prof.Dr.-Ing. Method for increasing the load capacity, the stiffness and the damping of vibrations of a wooden joist ceiling arrangement and wooden joist ceiling arrangement with increased load capacity, stiffness and damping of vibrations.
FR2871089A1 (en) * 2004-06-02 2005-12-09 Christian Plee Wooden structure e.g. boarder floor, reinforcement and/or restitution method for woodwork construction field, involves forming recesses in stiffening girder, fixing girder on wooden structure, and injecting resin in recesses
WO2008148897A1 (en) * 2007-06-06 2008-12-11 Mikel Landa Esparza Method for in situ restoration of wood beams
US8910454B2 (en) 2008-02-01 2014-12-16 Loggo IP Pty. Ltd. Timber structural member
US9605431B2 (en) 2008-02-01 2017-03-28 Loggo Ip Pty Ltd Timber structural member with embedded web
EP2350408A1 (en) * 2008-11-18 2011-08-03 Loggo IP Pty Ltd. in its Capacity as Trustee for Thornton IP Trust Timber structural member
EP2350408A4 (en) * 2008-11-18 2014-09-17 Loggo Ip Pty Ltd In Its Capacity As Trustee For Thornton Ip Trust Timber structural member
WO2010057243A1 (en) * 2008-11-18 2010-05-27 Patrick Thornton Timber structural member
FR3012496A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD OF REINFORCING A BUILDING ELEMENT BY ASSEMBLING REINFORCING MODULES AND AT LEAST ONE TERMINATION ELEMENT
FR3012497A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD FOR REINFORCING A WOODEN BUILDING ELEMENT BY ASSEMBLING A POST-TENSIONED REINFORCING MODULE
FR3012495A1 (en) * 2013-10-30 2015-05-01 Lefevre M METHOD FOR REINFORCING A WOODEN BUILDING ELEMENT WITH A REINFORCING MODULE
EP2868829A1 (en) * 2013-10-30 2015-05-06 M Lefevre Method for reinforcing a timber construction element by assembling a reinforcement module placed under post-tension
EP2868828A1 (en) * 2013-10-30 2015-05-06 M Lefevre Method for reinforcing a construction element by assembling reinforcing modules and at least one termination element
EP2868841A1 (en) * 2013-10-30 2015-05-06 M Lefevre Method for reinforcing a timber construction element by a reinforcement module
NL2014680A (en) * 2015-04-20 2016-10-24 Sealteq│Group B V Reinforcement of a masonry wall.
WO2016171555A1 (en) * 2015-04-20 2016-10-27 Sealteq | Group B.V. Reinforced masonry wall
US11028604B2 (en) 2015-04-20 2021-06-08 Sealteq I Group B.V. Reinforced masonry wall

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EP0034224A3 (en) 1982-09-15

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