EP1045091A1 - Verstärkungsverfahren für Bauelement - Google Patents

Verstärkungsverfahren für Bauelement Download PDF

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Publication number
EP1045091A1
EP1045091A1 EP00401042A EP00401042A EP1045091A1 EP 1045091 A1 EP1045091 A1 EP 1045091A1 EP 00401042 A EP00401042 A EP 00401042A EP 00401042 A EP00401042 A EP 00401042A EP 1045091 A1 EP1045091 A1 EP 1045091A1
Authority
EP
European Patent Office
Prior art keywords
elements
spacers
synthetic resin
building element
hole
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.)
Granted
Application number
EP00401042A
Other languages
English (en)
French (fr)
Other versions
EP1045091B1 (de
Inventor
Marc-Henry Menard
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 SA
Original Assignee
M Lefevre SA
M Lefevre SA
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 SA, M Lefevre SA filed Critical M Lefevre SA
Publication of EP1045091A1 publication Critical patent/EP1045091A1/de
Application granted granted Critical
Publication of EP1045091B1 publication Critical patent/EP1045091B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E04G23/0225—Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
    • 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 the field of reinforcement construction elements such as walls, pillars or posts.
  • Such construction elements are subjected to stresses compression due to their own mass and possibly to loads that they have to support, for example other building elements of the type superstructures, arches, walls, pillars, frames, etc.
  • the object of the present invention is to allow such a reinforcement in situ and without disassembly or complete replacement.
  • the on-site reinforcement method according to the invention is intended for an existing building element subjected to at least stresses compression, the construction element being of the pile, post or wall, process in which one inserts inside said element of construction of at least three non-coplanar elements for the recovery of compression forces and spacers capable of preventing buckling elements of resumption of efforts, elements of resumption of efforts and the spacers comprising a synthetic resin.
  • the elements of resumption of the forces are put in place by drilling longitudinal holes in the building element.
  • the elements of resumption of forces are put in place by digging grooves longitudinal in the building element, said grooves being patched up after the installation of the force recovery elements, with a material similar to the original material of the building element.
  • an element of resumption of efforts consists of a synthetic resin composition loaded.
  • an element of recovery of forces includes a central rod and a peripheral part of sealing in the hole or the groove which receives it, the central rod being of the synthetic resin type loaded with fibers and the peripheral part being of the loaded synthetic resin composition type.
  • a layer isolation is put in place between a force recovery element and the wall of the hole or the groove that receives it, to avoid sealing of the force recovery element and said wall.
  • an element of resumption of forces is sealed in the wall of the hole or groove which receives.
  • the spacers are put in place by drilling transverse holes in the building element, a spacer comprising a central rod and a peripheral sealing part in the hole which receives it, the central rod being of the synthetic resin type loaded with fibers and the peripheral part being of the composition type charged synthetic resin.
  • the building element can be a wall, a post or a pile, generally an element of vertical architecture, or oblique compressed, constructed of stone, for example in part or in whole in ashlar, brick, wood.
  • the pillar 1 to section octagonal is pierced with four longitudinal holes 2 arranged in a square and centered with respect to pillar 1.
  • Each hole 2 is equipped with a rod 3 in synthetic resin, for example fiber reinforced epoxy for example of glass, arranged substantially in the center of said hole 2, and a mortar or a epoxy resin concrete 4 surrounding the rod 3 and in contact with the walls of the hole 2.
  • the resin 4 is mechanically integral with the rod 3 and the walls of the hole 2 and thus ensures the sealing of the rod 3 in the hole 2.
  • the mortar will include a mixture of epoxy resin and a charge such as sand.
  • Concrete will include a mixture of resin epoxy, and a filler such as gravel and sand.
  • This insulation can be achieved by means of a part felt, plastic or a non-adherent layer, wax or grease, not shown, matching the outline of hole 2.
  • spacers 5 are arranged between the holes 2.
  • the spacers 5 are also produced by drilling holes, installation of an epoxy resin rod reinforced with glass fibers and sealing with epoxy resin mortar.
  • the spacers 5 will preferably be slightly inclined, of a angle of 10 to 15 °, with respect to the transverse section plane of FIG. 1. This inclination increases the rigidity of the whole.
  • the holes 2 are drilled from above the pillar 1 without intervening on its outer wall 1a.
  • the holes in which are arranged the spacers 5 are drilled from said wall 1a.
  • damage or modifications to the wall 1a are limited to drilling holes for spacers which are of a diameter relatively small, for example 20 or 30 mm.
  • the ends of these holes for spacers can then be filled with part of the original material of pillar 1, or with a filling material imitating the wall 1a as much as possible.
  • the wall 1a is therefore almost entirely preserved, which is highly desired when it is worked, present historical, artistic interest.
  • the four longitudinal reinforcements arranged in pillar 1 allow the forces due to a mass of 80,000 kg, which the original pillar was unable or no longer able to take up.
  • FIG. 2 an embodiment of the invention is illustrated, which differs from that of FIG. 1 in that the pillar 6 is not accessible by one of its ends. We must therefore intervene on the side walls 6a by digging longitudinal grooves or grooves 7 through said walls 6a. Then we have in said grooves 7 rods 2. We then fill the bleeding 7 of resin mortar 4 by giving it a desired shape, by example using formwork. This form is intended so that one can then add a facing 8 covering the resin mortar 4. The facing 8 will be made with the original material of the pillar 6 or with a material with mechanical and aesthetic characteristics compatible. For the simplicity of the drawing in FIG. 2, we have not represented the spacers which are nevertheless present.
  • the reinforcement can only be formed in mortar or concrete resin 4 without having a rod 2.
  • the number reinforcements can be more important, for example up to six or eight.
  • the number of rods 2 in a given reinforcement is adapted to the load.
  • Their diameter is also adapted to the charge.
  • the function of resin 4 is essentially to take up the compression forces, while the rods 2 allow both resume compression forces and avoid buckling.
  • the spacers 5 prevent buckling.
  • the pillar 9 includes at least three reinforcements 10 of which only two are visible and made by drilling a vertical hole or a vertical groove, by laying unrepresented armed rods and a resin mortar.
  • Reinforcements 10 are provided with spacers 11 slightly inclined relative to the horizontal.
  • the spacers can be arranged in alternate pairs at a given height.
  • the spacers 11 of a pair are each arranged in a vertical plane parallel to the vertical plane of the other spacer 11, their angle of inclination with respect to the horizontal being the same or of sign reversed.
  • the spacers of the pair arranged immediately above, will be in two vertical planes perpendicular to the previous ones, and so right now.
  • Rods 12 and 13 are therefore oblique and can be subjected to a prestress during their installation. First seal the end of the rods 12 and 13 in pillar 9, then at their other end, not shown, we exerts a prestressing effort. We seal said other end of rods 12 and 13 while maintaining the prestressing force, then after setting the sealing mortar, the prestressing effort is released.
  • the present invention is particularly suitable for reinforcement of walls, pillars or posts which must not be dismantled and which we want to keep as much material and surface as possible of origin. This reinforces all or part of an element whose mechanical characteristics have decreased, for example due to a migration of mineral salts or any other cause of aging.

Landscapes

  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Piles And Underground Anchors (AREA)
  • Revetment (AREA)
  • Road Paving Structures (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP00401042A 1999-04-16 2000-04-14 Verstärkungsverfahren für Bauelement Expired - Lifetime EP1045091B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9904843A FR2792355B1 (fr) 1999-04-16 1999-04-16 Procede de renforcement d'un element de construction
FR9904843 1999-04-16

Publications (2)

Publication Number Publication Date
EP1045091A1 true EP1045091A1 (de) 2000-10-18
EP1045091B1 EP1045091B1 (de) 2006-07-05

Family

ID=9544533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401042A Expired - Lifetime EP1045091B1 (de) 1999-04-16 2000-04-14 Verstärkungsverfahren für Bauelement

Country Status (6)

Country Link
EP (1) EP1045091B1 (de)
AT (1) ATE332426T1 (de)
DE (1) DE60029159D1 (de)
ES (1) ES2267472T3 (de)
FR (1) FR2792355B1 (de)
PT (1) PT1045091E (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545132A1 (fr) * 1983-04-28 1984-11-02 Renofors France Procede de consolidation de constructions en pierre
EP0141782A2 (de) * 1983-10-24 1985-05-15 René Lacroix Verfahren zur Restaurierung von Trägern und zur Erhöhung ihrer Festigkeit
FR2585393A1 (fr) * 1985-07-29 1987-01-30 Renofors France Poutre ou autre element de construction en bois renforce au moyen d'une armature, et procede pour sa realisation
FR2635550A1 (fr) * 1988-08-18 1990-02-23 Georges Culica Procede de surelevation d'immeubles
GB2302896A (en) * 1995-07-01 1997-02-05 William George Edscer Arch reinforcement
JPH09151612A (ja) * 1995-12-01 1997-06-10 Kajima Corp 鉄筋コンクリート柱の補強方法
WO1999009277A1 (en) * 1997-08-14 1999-02-25 William George Edscer Methods of reinforcing existing masonry structures

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545132A1 (fr) * 1983-04-28 1984-11-02 Renofors France Procede de consolidation de constructions en pierre
EP0141782A2 (de) * 1983-10-24 1985-05-15 René Lacroix Verfahren zur Restaurierung von Trägern und zur Erhöhung ihrer Festigkeit
FR2585393A1 (fr) * 1985-07-29 1987-01-30 Renofors France Poutre ou autre element de construction en bois renforce au moyen d'une armature, et procede pour sa realisation
FR2635550A1 (fr) * 1988-08-18 1990-02-23 Georges Culica Procede de surelevation d'immeubles
GB2302896A (en) * 1995-07-01 1997-02-05 William George Edscer Arch reinforcement
JPH09151612A (ja) * 1995-12-01 1997-06-10 Kajima Corp 鉄筋コンクリート柱の補強方法
WO1999009277A1 (en) * 1997-08-14 1999-02-25 William George Edscer Methods of reinforcing existing masonry structures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 103 31 October 1997 (1997-10-31) *

Also Published As

Publication number Publication date
FR2792355B1 (fr) 2007-10-12
PT1045091E (pt) 2006-11-30
FR2792355A1 (fr) 2000-10-20
DE60029159D1 (de) 2006-08-17
ES2267472T3 (es) 2007-03-16
EP1045091B1 (de) 2006-07-05
ATE332426T1 (de) 2006-07-15

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