EP0954657B1 - Montant en beton - Google Patents

Montant en beton Download PDF

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Publication number
EP0954657B1
EP0954657B1 EP98905315A EP98905315A EP0954657B1 EP 0954657 B1 EP0954657 B1 EP 0954657B1 EP 98905315 A EP98905315 A EP 98905315A EP 98905315 A EP98905315 A EP 98905315A EP 0954657 B1 EP0954657 B1 EP 0954657B1
Authority
EP
European Patent Office
Prior art keywords
pillar
flat
concrete
flat strip
flat strips
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.)
Expired - Lifetime
Application number
EP98905315A
Other languages
German (de)
English (en)
Other versions
EP0954657A1 (fr
Inventor
Alexander Bleibler
Werner Steiner
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.)
Sika Schweiz AG
Original Assignee
Sika Schweiz AG
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 Sika Schweiz AG filed Critical Sika Schweiz AG
Publication of EP0954657A1 publication Critical patent/EP0954657A1/fr
Application granted granted Critical
Publication of EP0954657B1 publication Critical patent/EP0954657B1/fr
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
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/30—Columns; Pillars; Struts
    • E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • 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 invention relates to a concrete column with a column foot, a column head and, if necessary, a steel reinforcement embedded in the interior of the column with one in the form of a spiral over the column surface extending ribbon, the ribbon being a composite structure a plurality of carrier fibers aligned essentially parallel to one another has and with its one broadside by means of an adhesive on the Support surface is attached.
  • Columns are vertical components, their height or length in relation to their cross-sectional dimensions is large.
  • the supports serve others Components such as beams or beams as supports and guide their loads in the foundation. This mainly results in a pressure load in the longitudinal direction of the column. Columns can also be supported by horizontal loads such as Wind loads, impact loads or seismic movements are subjected to bending become. With slender supports there is also the risk of Buckling. Depending on the type of manufacture are independent of the load and the risk of buckling stipulates minimum thicknesses for supports. For the reinforcement of columns are subject to the guidelines laid down in DIN 1045. If there is a risk of high impact loads and seismic movements are sufficient however, these guidelines for a kink-proof design of reinforced concrete columns often not out.
  • a concrete column of the type mentioned (US 5,043,033) is yours Reinforcement wrapped with a flat ribbon made of supporting fibers.
  • the flat ribbon extends in the form of a helix over the support surface so that it is covered by a continuous layer.
  • the support of the flat belt is reinforced. Penetrating under the ribbon
  • water can hardly escape again, so that the support be damaged by the accumulation of water under the flat belt can.
  • Another known concrete support points to its reinforcement layers of fabric impregnated with resin, which make the support tire-like include.
  • the surface of this well-known concrete column is also seamless covered by the fabric layers, so that between the support and the Layers of tissue penetrated water poorly back to the environment is delivered. This in turn results in increased vulnerability against damage from between the support and the tissue layers accumulated water.
  • the object of the invention is a concrete prop to develop with high buckling protection, which also high horizontal forces and can withstand seismic movements, and more consistently against water.
  • the flat band is between the column foot and the column head extends that the supporting fibers are resistant to shear through a binder matrix are interconnected, and that the pitch of the helix is greater than the bandwidth of the flat belt is, with gaps between the windings of the flat belt spiral remaining for the evaporation of accumulated water.
  • the pitch is such that there is no closed space between the flat strip and the column surface can form, from which possibly penetrating water could escape more.
  • the pitch of the helix corresponds accordingly about 1.1 to 5 times, preferably 1.5 to 2.5 times the flat band width.
  • the ribbon is appropriate the support surface by means of at least one fastening element secured so that it cannot come off from the ends.
  • the flat strips are fixed at a distance from one another by means of an adhesive on the support surface and the distance between the flat strips 0.1 to 4 times the flat strip width, leaving gaps between the flat strips for the evaporation of accumulated water.
  • the flat belts are overlapping ends on the support attached.
  • the distance between the flat tapes is such that that there is no closed between the flat strips and the surface of the column Can form a space from which any water can not penetrate could escape more.
  • the distance between the flat strips corresponds accordingly 0.1 to 4 times, preferably 0.5 to 1.5 times the flat band width.
  • Concrete stumps expediently have the flat strips in their over the Intermediate areas of the column edges are embossed Bend on. This bend can be created in that the flat strips in the areas concerned from their binder matrix freed with exposure of the supporting fibers and with a pasty, curable that replaces the binder matrix Resin can be applied.
  • a further increase in the kink protection can be according to one preferred embodiment of the invention can be achieved that additional, the helical or annular arranged Flat ribbons crossing at a distance from each other, by means of an adhesive on the support surface and / or on attached flat tapes provided the existing flat tapes are.
  • the supporting fibers of the ribbon are advantageously made Made of carbon fibers, which are characterized by a high modulus of elasticity distinguished.
  • flat belts can also be used with aramid, glass or polypropylene fibers or with one Mixture of the fibers mentioned can be used.
  • a reaction resin such as epoxy resin
  • Polyurethane resin, acrylic resin or polyester resin used as the binder.
  • acrylic resin used as the binder.
  • polyester resin used for a stable connection of the flat strip to the column surface to ensure there is also the adhesive expediently from a reaction resin of the type mentioned.
  • the reinforced concrete column wrapped with the flat tape can also plastered or provided with a protective coating be so that the reinforcement measure from the outside no longer is visible.
  • the concrete supports 10 shown in FIGS. 1, 3 and 5 have a column foot 12 and embedded in a foundation 11 a support head designed as a support for a component 14 16 on.
  • the concrete column 10 can be an internal steel reinforcement 17 included (Fig. 4a and b). For further reinforcement to prevent bending or buckling a flat belt 18 (FIG. 1) or with flat belts 18 ', 18' ' wrapped.
  • the ribbon 18 extends from Column foot 12 up to the column head 16 helically over the Support surface and is on this with an epoxy resin adhesive 19 attached flat.
  • the free ends of the band are through tab-shaped fasteners 20 set on the support.
  • the pitch h of the ribbon coil is larger than the bandwidth b. It corresponds to the embodiment shown about 1.5 times the flat band width b.
  • the gaps 22 between the flat ribbon turns ensure that between the ribbon and the column surface do not form a continuous closed cavity where water could accumulate.
  • Fig. 3 are one Plurality of the support encircling the support by means of a Adhesive flat tapes attached to the column surface 18 'provided, which are arranged at a distance a from each other are that in the embodiment shown corresponds to 0.5 times the flat band width b.
  • the ring-shaped flat bands embrace the support with overlapping ends 24 (Fig. 3).
  • the flat ribbons consist of a composite structure of one Plurality of parallel aligned, preferably carbon fibers 26 and one which Carrier fibers shear-resistant binding matrix 28 preferably made of epoxy resin.
  • the supports 10 can either be a rectangular or have a round cross-section.
  • the flat strips expedient in their area overlapping the edges 30 provided with an embossed bend 32 which thereby creates can be that the ribbon 18 'in the relevant Area of its binder matrix 28 exposing the limp support fibers 26 is freed and that after Wrap the area in question with the support Pasty, hardenable synthetic resin replacing binder matrix is applied (Fig. 5a and b).
  • the invention refers to a concrete column, especially a round column made of reinforced concrete with a column base 12, a column head 16 and optionally one arranged in the interior of the support Steel reinforcement.
  • kink resistance is between the column foot 12 and Column head 16 in the form of a helix over the column surface extending flat band 18 is provided, which is a composite structure from a variety of substantially parallel to each other aligned carbon fibers and one the carbon fibers shear-resistant binding matrix having.
  • the flat band 18 is at one Broadside using an adhesive on the column surface attached.
  • the pitch h of the ribbon coil is larger chosen as the bandwidth b of the flat band 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (13)

  1. Montant en béton avec un pied de montant (12), une tête de montant (16) et éventuellement une armature en acier (17) disposée à l'intérieur du montant, et avec une bande plate (18) s'étendant en hélice sur la surface du montant, la bande plate présentant une structure composite constituée d'une multiplicité de fibres porteuses orientées essentiellement parallèlement entre elles, et étant fixée par un de ses côtés larges sur la surface du montant au moyen d'un produit adhésif, caractérisé en ce que la bande plate (18) s'étend entre le pied de montant (12) et la tête de montant (16), en ce que les fibres porteuses sont mutuellement reliées en résistance au cisaillement par une matrice de liant, et en ce que le pas (h) de l'hélice est supérieur à la largeur (b) de la bande plate (18), des lacunes (22) restant libres entre les spires de l'hélice de bande plate pour l'évaporation de l'eau accumulée.
  2. Montant en béton selon la revendication 1, caractérisé en ce que la bande plate (18) est fixée à ses extrémités libres sur la surface du montant au moyen d'un élément de fixation respectif (20).
  3. Montant en béton selon la revendication 1 ou 2, caractérisé en ce que le pas (h) de l'hélice correspond à 1,1 à 5 fois, de préférence à 1,5 à 2,5 fois, la largeur (b) de la bande plate.
  4. Montant en béton avec un pied de montant (12), une tête de montant (16) et éventuellement une armature en acier (17) disposée à l'intérieur du montant, plusieurs bandes plates (18') entourant le montant à la manière de bandages étant fixées sur la surface du montant entre le pied de montant (12) et la tête de montant (16), les bandes plates (18') présentant une multiplicité de fibres porteuses (26) orientées essentiellement parallèlement entre elles et une matrice de liant (28) reliant entre elles les fibres porteuses en résistance au cisaillement, caractérisé en ce que les bandes plates sont fixées à distance entre elles sur la surface du montant au moyen d'un produit adhésif (19), et la distance (a) entre les bandes plates (18') correspond à 0,1 à 4 fois la largeur (b) des bandes plates, des lacunes (22) restant libres entre les bandes plates pour l'évaporation de l'eau accumulée.
  5. Montant en béton selon la revendication 4, caractérisé en ce que les bandes plates (18') sont fixées sur le montant (10) par leurs extrémités (24) en recouvrement mutuel.
  6. Montant en béton selon la revendication 4 ou 5, caractérisé en ce que la distance (a) entre les bandes plates (18') correspond à 0,5 à 1,5 fois la largeur (b) des bandes plates.
  7. Montant en béton selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est prévu des bandes plates supplémentaires (18"), qui croisent à distance entre elles les bandes plates (18, 18') disposées en hélice ou en anneaux et qui sont fixées au moyen d'un produit adhésif (19) sur la surface du montant et/ou sur les bandes plates (18, 18') existantes, des lacunes (22) restant libres entre les bandes plates croisées (18") pour l'évaporation de l'eau accumulée.
  8. Montant en béton selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les bandes plates (18, 18', 18") présentent un cintrage imprimé (32) dans leurs régions intermédiaires passant sur des arêtes vives (30) du montant.
  9. Montant en béton selon la revendication 8, caractérisé en ce que les bandes plates (18'), dans la région du cintrage imprimé (32), sont libérées de leur matrice de liant (28) en mettant à nu les fibres porteuses (26), et peuvent être pourvues d'une résine synthétique durcissable pâteuse remplaçant la matrice de liant.
  10. Montant en béton selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les fibres porteuses sont réalisées sous forme de fibres de carbone.
  11. Montant en béton selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la matrice de liant est constituée d'une résine composite, notamment d'une résine époxy.
  12. Montant en béton selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le produit adhésif est constitué d'une résine composite, notamment d'une résine époxy.
  13. Montant en béton selon l'une quelconque des revendications 1 à 12, caractérisé en ce que la surface du montant enveloppée de la bande plate (18) est pourvue d'un enduit ou d'une couche de peinture protectrice.
EP98905315A 1997-01-23 1998-01-20 Montant en beton Expired - Lifetime EP0954657B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19702247 1997-01-23
DE19702247A DE19702247A1 (de) 1997-01-23 1997-01-23 Betonstütze
PCT/EP1998/000271 WO1998032932A1 (fr) 1997-01-23 1998-01-20 Montant en beton

Publications (2)

Publication Number Publication Date
EP0954657A1 EP0954657A1 (fr) 1999-11-10
EP0954657B1 true EP0954657B1 (fr) 2003-04-09

Family

ID=7818102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98905315A Expired - Lifetime EP0954657B1 (fr) 1997-01-23 1998-01-20 Montant en beton

Country Status (9)

Country Link
EP (1) EP0954657B1 (fr)
JP (1) JP2000513060A (fr)
KR (1) KR100348767B1 (fr)
AT (1) ATE237048T1 (fr)
AU (1) AU738483B2 (fr)
CA (1) CA2278462A1 (fr)
DE (2) DE19702247A1 (fr)
ES (1) ES2193516T3 (fr)
WO (1) WO1998032932A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2323944C (fr) * 1998-03-24 2007-01-23 University Of Ottawa Adaptation de colonnes en beton existantes par precontrainte externe
JP3484156B2 (ja) * 1999-12-27 2004-01-06 構造品質保証研究所株式会社 構築物の補強方法及びその構造
AUPR745001A0 (en) * 2001-09-04 2001-09-27 John Holland Pty Ltd A method for reinforcing poles
EP1411185B1 (fr) * 2002-10-14 2013-04-10 SAG Energieversorgungslösungen GmbH Méthode de restauration de mâts de béton
US7562499B2 (en) 2006-01-13 2009-07-21 HC Bridge Company, LLC Hybrid composite beam system
JP2008063744A (ja) * 2006-09-05 2008-03-21 Nippon Oil Corp 炭素繊維による既存構造物の補強方法
JP6058332B2 (ja) * 2012-09-25 2017-01-11 東日本旅客鉄道株式会社 コンクリート柱の耐震補強構造及びコンクリート柱の耐震補強方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04189977A (ja) * 1990-11-22 1992-07-08 Mitsubishi Kasei Corp 既存コンクリート躯体の補強構造

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559974A (en) * 1982-10-01 1985-12-24 Fawley Norman Apparatus and method of arresting ductile fracture propagation
GB8421820D0 (en) * 1984-08-29 1984-10-03 Balfour Beatty Ltd Precast concrete piles
US5043033A (en) * 1991-01-28 1991-08-27 Fyfe Edward R Process of improving the strength of existing concrete support columns
US5218810A (en) * 1992-02-25 1993-06-15 Hexcel Corporation Fabric reinforced concrete columns

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04189977A (ja) * 1990-11-22 1992-07-08 Mitsubishi Kasei Corp 既存コンクリート躯体の補強構造

Also Published As

Publication number Publication date
DE59807863D1 (de) 2003-05-15
DE19702247A1 (de) 1998-07-30
JP2000513060A (ja) 2000-10-03
KR20000070408A (ko) 2000-11-25
AU6095298A (en) 1998-08-18
ES2193516T3 (es) 2003-11-01
ATE237048T1 (de) 2003-04-15
WO1998032932A1 (fr) 1998-07-30
EP0954657A1 (fr) 1999-11-10
KR100348767B1 (ko) 2002-08-14
CA2278462A1 (fr) 1998-07-30
AU738483B2 (en) 2001-09-20

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