WO1998032932A1 - Montant en beton - Google Patents

Montant en beton Download PDF

Info

Publication number
WO1998032932A1
WO1998032932A1 PCT/EP1998/000271 EP9800271W WO9832932A1 WO 1998032932 A1 WO1998032932 A1 WO 1998032932A1 EP 9800271 W EP9800271 W EP 9800271W WO 9832932 A1 WO9832932 A1 WO 9832932A1
Authority
WO
WIPO (PCT)
Prior art keywords
flat
column
support according
concrete
concrete support
Prior art date
Application number
PCT/EP1998/000271
Other languages
German (de)
English (en)
Inventor
Alexander Bleibler
Werner Steiner
Original Assignee
Sika Ag, Vormals Kaspar Winkler & Co.
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 Ag, Vormals Kaspar Winkler & Co. filed Critical Sika Ag, Vormals Kaspar Winkler & Co.
Priority to JP10531555A priority Critical patent/JP2000513060A/ja
Priority to AU60952/98A priority patent/AU738483B2/en
Priority to EP98905315A priority patent/EP0954657B1/fr
Priority to CA002278462A priority patent/CA2278462A1/fr
Priority to DE59807863T priority patent/DE59807863D1/de
Priority to AT98905315T priority patent/ATE237048T1/de
Publication of WO1998032932A1 publication Critical patent/WO1998032932A1/fr

Links

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, in particular a round column made of reinforced concrete, with a column foot connected to a foundation, a column head receiving a load element and optionally a steel reinforcement embedded in the column interior.
  • Columns are vertical components, the height or length of which is large in relation to their cross-sectional dimensions.
  • the supports serve other components, such as beams or beams, as supports and guide their loads into the foundation. This mainly results in compressive stress in the longitudinal direction of the column. Supports can also be subjected to bending loads by horizontal loads such as wind loads, impact loads or seismic movements. With slender supports there is an additional risk of buckling. Depending on the type of production, regardless of the load and the risk of buckling, minimum thicknesses are specified for supports.
  • the guidelines specified in DIN 1045 apply to the reinforcement of columns. If there is a risk of high impact loads and seismic movements, these guidelines are often not sufficient for a kink-proof design of reinforced concrete columns.
  • the object of the invention is to develop a concrete support with high buckling protection, which is also able to withstand high horizontal forces and seismic movements.
  • a flat surface extending between the column base and column head in the form of a helix extends over the column surface.
  • proposed band which has a composite structure of a plurality of substantially parallel aligned support fibers and a binding matrix connecting the support fibers in a shear-resistant manner and is fastened to the support surface with one broad side surface by means of an adhesive, the pitch of the helix being greater than the bandwidth of the flat strip is.
  • the pitch is dimensioned so that no closed space can form between the flat belt and the column surface, from which any water that might enter could no longer escape.
  • the pitch of the helix accordingly corresponds to approximately 1.1 to 5 times, preferably 1.5 to 2.5 times the flat bandwidth.
  • the flat strip is expediently secured to the support surface by means of at least one fastening element each, so that it cannot detach from the ends.
  • a plurality of flat strips which surround the support in the manner of a tire and are fastened to the surface of the support by means of an adhesive, are arranged at a distance from one another between the support foot and the support head, the flat strips comprising a plurality of carrier fibers which are oriented essentially parallel to one another and one which is resistant to shear have interconnecting binder matrix.
  • the flat strips' are secured with overlapping ends to the binder matrix.
  • the distance between the flat strips is such that can not form gesche ⁇ ner gap between the flat bands and supporting surface from which may eindringen- the water could no longer escape. Accordingly, the distance between the flat strips corresponds to 0.1 to 4 times, preferably 0.5 to 1.5 times the flat strip width.
  • the flat strips expediently have an embossed bend in their intermediate regions guided over the edge of the supports.
  • This bend can be produced in that the flat strips in the areas concerned are freed of their binder matrix with exposure of the supporting fibers and can be acted upon with a pasty, curable synthetic resin replacing the binder matrix.
  • a further increase in the kink protection can be achieved according to a preferred embodiment of the invention in that additional flat strips are provided, which cross the spiral-shaped or ring-shaped flat strips at a distance from one another and are attached to the support surface and / or to the existing flat strips by means of an adhesive.
  • the carrier fibers of the flat strip advantageously consist of carbon fibers, which are characterized by a high modulus of elasticity.
  • flat ribbons with aramid, glass or polypropylene fibers or with a mixture of the fibers mentioned can also be used.
  • reaction resin such as epoxy resin, polyurethane, acrylic resin or polyester resin is expediently used as the binder.
  • the adhesive also expediently consists of a reaction resin of the type mentioned.
  • the reinforced concrete column wrapped with the flat strip can also be plastered or coated with a protective coating so that the reinforcement measure is no longer visible from the outside.
  • Figure 1 is designed as a building support round support with helical flat ribbon wrapping.
  • FIG. 3 shows a building support with a tire-like flat band wrapping
  • FIG. 4a and b show a section through the structural support according to FIG. 3, which is designed as a square support and as a round support;
  • 5a and b show a top view and a side view of a reinforcing lamella with a binder-free, flexible intermediate area
  • Fig. 6 is a concrete column with cross and transverse ribbon tape.
  • the concrete supports 10 shown in FIGS. 1, 3 and 5 have a support foot 12 embedded in a foundation 11 and a support head 16 designed as a support for a component '14 .
  • the concrete column 10 can contain an internal steel reinforcement 17 (FIGS. 4a and b).
  • the support is wrapped with a flat strip 18 (FIG. 1) or with flat strips 18 ', 18''.
  • the pitch h of the flat coil is larger than the bandwidth b. In the exemplary embodiment shown, it corresponds to approximately 1.5 times the flat strip width b.
  • the gaps 22 between the flat ribbon windings ensure that no coherent, closed cavity can form between the flat ribbon and the support surface, in which water could accumulate.
  • a plurality of flat strips 18 ′ which surround the support in an annular manner and are fastened to the surface of the support by means of an adhesive are provided, which are arranged at a distance a from one another, which in the exemplary embodiment shown is approximately 0.5 times the flat band width b.
  • the ring-shaped flat bands encompass the support with ends 24 that overlap one another (FIG. 3).
  • these flat strips 18' ' which cross at an angle of 90 ° are provided, which are arranged at a distance from one another, so that gaps 22 for the evaporation of water are also present in this case remain free.
  • the flat strips consist of a composite structure of a plurality of parallel aligned, vorzugswei ⁇ se of carbon existing support fibers 26 and the reinforcing fibers are shear firmly interconnecting Bindeffenma ⁇ trix 28 is preferably made of epoxy resin.
  • the supports 10 can have either a rectangular or round cross section. In the case of Rectangular cross-section according to FIG.
  • the flat strips are expediently provided with an embossed bend 32 in their area overlapping the edges 30, which can be produced by the flat strip 18 'being freed from its binder matrix 28 in the area in question, exposing the limp support fibers 26 and that after the support has been wrapped, the area in question is acted upon by a pasty, curable synthetic resin which replaces the binder matrix (FIGS. 5a and b).
  • the invention relates to a concrete column, in particular a round column made of reinforced concrete with a column base 12, a column head 16 and, if appropriate, a steel reinforcement arranged in the column interior.
  • a flat strip 18 is provided between the column foot 12 and the column head 16 in the form of a helix and extends over the column surface Show binder matrix.
  • the flat strip 18 is fastened to the support surface on one broad side by means of an adhesive.
  • the pitch h of the flat ribbon helix is chosen to be greater than the bandwidth b of the flat ribbon 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)

Abstract

L'invention concerne un montant en béton, notamment un montant rond en béton armé avec un pied (12) et une tête (16), ainsi qu'éventuellement une armature en acier située à l'intérieur du montant. Pour augmenter la résistance à la flexion et la résistance au flambage, il est prévu entre le pied (12) et la tête (16) du montant, une bande plate (18) s'étendant sur toute la surface dudit montant, sous forme d'hélice. Cette bande plate (18) présente une structure composite composée d'une pluralité de fibres de carbone alignées sensiblement parallèlement les unes aux autres et d'une matrice liante qui interconnecte les fibres de carbone de manière qu'elles résistent au cisaillement. La bande plate (18) est fixée sur la surface du montant à l'aide d'un adhésif au niveau de son côté large. Le pas (h) de l'hélice de la bande plate est de ce fait plus important que la largeur (b) de la bande plate (18).
PCT/EP1998/000271 1997-01-23 1998-01-20 Montant en beton WO1998032932A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP10531555A JP2000513060A (ja) 1997-01-23 1998-01-20 コンクリート支柱
AU60952/98A AU738483B2 (en) 1997-01-23 1998-01-20 Concrete pillar
EP98905315A EP0954657B1 (fr) 1997-01-23 1998-01-20 Montant en beton
CA002278462A CA2278462A1 (fr) 1997-01-23 1998-01-20 Montant en beton
DE59807863T DE59807863D1 (de) 1997-01-23 1998-01-20 Betonstütze
AT98905315T ATE237048T1 (de) 1997-01-23 1998-01-20 Betonstütze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702247A DE19702247A1 (de) 1997-01-23 1997-01-23 Betonstütze
DE19702247.2 1997-01-23

Publications (1)

Publication Number Publication Date
WO1998032932A1 true WO1998032932A1 (fr) 1998-07-30

Family

ID=7818102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000271 WO1998032932A1 (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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021060A1 (fr) * 2001-09-04 2003-03-13 John Holland Pty Ltd Procede de renforcement de poteaux

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200003762T2 (tr) * 1998-03-24 2001-05-21 University Of Ottawa Harici baskı uygulanarak mevcut beton kolonların yenilenmesi
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
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 (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
GB2163800A (en) * 1984-08-29 1986-03-05 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2718459B2 (ja) * 1990-11-22 1998-02-25 三菱化学株式会社 既存コンクリート躯体の補強構造

Patent Citations (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
GB2163800A (en) * 1984-08-29 1986-03-05 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003021060A1 (fr) * 2001-09-04 2003-03-13 John Holland Pty Ltd Procede de renforcement de poteaux

Also Published As

Publication number Publication date
DE19702247A1 (de) 1998-07-30
DE59807863D1 (de) 2003-05-15
JP2000513060A (ja) 2000-10-03
KR20000070408A (ko) 2000-11-25
EP0954657B1 (fr) 2003-04-09
ES2193516T3 (es) 2003-11-01
AU738483B2 (en) 2001-09-20
KR100348767B1 (ko) 2002-08-14
AU6095298A (en) 1998-08-18
ATE237048T1 (de) 2003-04-15
CA2278462A1 (fr) 1998-07-30
EP0954657A1 (fr) 1999-11-10

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