EP1007809B1 - Verstärkungsvorrichtung für tragstrukturen - Google Patents

Verstärkungsvorrichtung für tragstrukturen Download PDF

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Publication number
EP1007809B1
EP1007809B1 EP98937382A EP98937382A EP1007809B1 EP 1007809 B1 EP1007809 B1 EP 1007809B1 EP 98937382 A EP98937382 A EP 98937382A EP 98937382 A EP98937382 A EP 98937382A EP 1007809 B1 EP1007809 B1 EP 1007809B1
Authority
EP
European Patent Office
Prior art keywords
cfk
panel
end element
reinforcing device
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
EP98937382A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1007809A1 (de
Inventor
Gregor Schwegler
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
StressHead 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 StressHead AG filed Critical StressHead AG
Publication of EP1007809A1 publication Critical patent/EP1007809A1/de
Application granted granted Critical
Publication of EP1007809B1 publication Critical patent/EP1007809B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/127—The tensile members being made of fiber reinforced plastics
    • 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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • 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
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic 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
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0255—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements whereby the fiber reinforced plastic elements are stressed
    • E04G2023/0259—Devices specifically adapted to stress the fiber reinforced plastic 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
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements
    • E04G2023/0262—Devices specifically adapted for anchoring the fiber reinforced plastic elements, e.g. to avoid peeling off
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1059—Splitting sheet lamina in plane intermediate of faces

Definitions

  • the present invention relates to a Reinforcement device according to the preamble of claim 1 and a method for reinforcing beams after the Preamble of claim 11.
  • Support structures can consist of conventionally constructed walls Be brick or for example reinforced concrete walls or - beams, wood, plastic or steel beams.
  • the reinforcement of such has long been known Support structures with retrofitted steel plates.
  • the steel plates i.e. band-shaped steel sheets resp. Steel slats are placed on one or two sides of the Glued supporting structure, preferably on the train loaded sides of the supporting structure.
  • the advantage of this The process was that it was relatively quick can be carried out, but high demands the glue, i.e. the preparation of the parts and the Implementation of the gluing must be under precisely defined Ratios take place to get the desired effect to reach. Problems with this method occur in particular in the corrosion area, i.e. if supporting structures in Outdoor should be strengthened in such a way, for example Bridge girders.
  • clamping means in the form of strips made of metal or fiber-reinforced plastic to be used over end anchorages.
  • clamping device there is no flat connection of the clamping device with the supporting structure, but it is only in the two anchor points of the Clamping means a connection with the supporting structure intended.
  • Such clamping devices are conventional already included in the planning of the supporting structure, because a subsequent equipment practically not or only with very high effort can be realized because for the Corresponding channels created in the supporting structure Need to become.
  • the object of the present invention was now a CFRP reinforcement lamella, where the Force is transmitted from the carrier into the ends in such a way that detachment is practically avoided and which one also suitable for preloading.
  • the ends of the CFRP slats can be split preferably either in superimposed flags or juxtaposed flags take place, respectively. in a Combination of these two variants.
  • the ends of the CFRP slats can be split advantageously at the construction site itself in each required lengths and dimensions. So that is this system is very universal for amplifying suitable for practically any support components and can be used with or can also be used without pretension.
  • FIG. 1 now shows the cross section through a reinforcing beam 1.
  • the ends of the used for this CFRP slats 2 are, according to the invention, in end elements, here anchor heads 3 and 4 used.
  • the anchor heads 3,4 can be milled or tapered recesses of the Carrier 1 can be used, as in this figure shown.
  • the CFRP lamella 2 is by means of a Adhesive layer 5 with the carrier 1 over the entire surface or partially connected, as well as the anchor heads 3, 4 glued.
  • This Cross-clamping device 6 can, for example, through the Carrier 1 and the anchor heads 3, 4 passed through Threaded rods or dowels are made.
  • FIG. 2 now shows the cross section through one of the Anchor heads 3.
  • the holding slots 9 are here arranged widened upwards and downwards and have transverse bores 10. These holes 10 result in additional anchoring points for the adhesive, with which the flags 2 'of the CFRP lamella 2 with the Holding slots 9 are connected.
  • the great However, the advantage lies in splitting the end of the Lamella 2 in the flags 2 '. This split takes place preferably in the grain of the slats, and it will thus advantageously an enlargement of the adhesive surface achieved without the strength properties of the CFRP lamella 2 are affected.
  • transverse reinforcement 11 To in the exit area of the CFRP lamella 2 from the anchor head 3 bend or open the anchor head Lateral forces resulting from the wedge or arcuate Arrange the arrangement of the holding slots 9, is to be avoided preferably to install a transverse reinforcement 11, which in Figure 2 is only indicated schematically.
  • this transverse reinforcement 11 by means of appropriate Bores in the anchor head 3 and passed through nuts tensioned threaded rods.
  • FIG. 3 shows one end of the CFRP lamella 2 with the split into three flags 2 ' Slat end.
  • the CFRP slat can be used with conventional After cutting to length to the desired length desired number, flags of approximately the same thickness 2 ' be split up, for example by means of a plane or knife.
  • the advantage here is that in terms of quality the splitting relatively low requirements be divided into the essentials corresponding number of flags 2 'to achieve the Area enlargement for the connection with the anchor head 3rd
  • FIG. 5 now shows the cross section through a Anchor head 12 and the corresponding arrangement of the Holding slots 9.
  • the bottom slot 9 ' is parallel to the outer wall 12 'of the support lying on the support 1 Anchor head 12 formed, the remaining slots 9 are fan-shaped towards the outside at an acute angle arranged pointing.
  • this arrangement brings about the enlargement of the bonding surface of the CFRP lamella 2 the same advantages as already described, and on the other hand, enables the flat application of the Anchor heads 12, 13 without additional recesses on the carrier 1.
  • Cross reinforcement means 11 are also in these anchor heads 12, 13 shown to avoid bending or tearing open the anchor heads 12, 13 in the area of the exit of the CFRP lamella 2nd
  • the anchor heads 3.4, respectively. 12, 13 is suitable metal, which has a high strength, easy workability and good Has force introduction properties, and on the other hand also plastic, especially if the Corrosion requirements must be high.
  • a screw 16 for mutual Pressing the plates 15 respectively. the flags 2 'used become.
  • Figure 8 is the supervision of another Embodiment of the end of the CFRP lamella 2 shown.
  • the flags 2 ' are not formed one above the other, but are formed side by side.
  • the splitting is preferably along the grain made of CFRP lamella 2.
  • the reinforcement devices according to the invention are suitable are particularly interested in the renovation of existing concrete support structures, such as blankets or Bridge girders.
  • existing concrete support structures such as blankets or Bridge girders.
  • CFRP slats such as masonry and Wooden structures.
  • the easy preload enable the higher utilization of the strength properties of the CFRP slats than with the previously known methods.
  • preload causes that on the pull side existing support element is pre-pressed what is particularly advantageous for bridge girders, for example.

Landscapes

  • Architecture (AREA)
  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bridges Or Land Bridges (AREA)
  • Tents Or Canopies (AREA)
  • Electric Cable Installation (AREA)
  • Sewage (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
EP98937382A 1997-08-26 1998-08-18 Verstärkungsvorrichtung für tragstrukturen Expired - Lifetime EP1007809B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH198797 1997-08-26
CH198797 1997-08-26
PCT/CH1998/000346 WO1999010613A1 (de) 1997-08-26 1998-08-18 Verstärkungsvorrichtung für tragstrukturen

Publications (2)

Publication Number Publication Date
EP1007809A1 EP1007809A1 (de) 2000-06-14
EP1007809B1 true EP1007809B1 (de) 2001-10-10

Family

ID=4223266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98937382A Expired - Lifetime EP1007809B1 (de) 1997-08-26 1998-08-18 Verstärkungsvorrichtung für tragstrukturen

Country Status (14)

Country Link
US (1) US6851232B1 (es)
EP (1) EP1007809B1 (es)
JP (1) JP4202596B2 (es)
CN (1) CN1131365C (es)
AT (1) ATE206794T1 (es)
AU (1) AU740242B2 (es)
BR (1) BR9812141A (es)
CA (1) CA2301755C (es)
DE (1) DE59801706D1 (es)
ES (1) ES2165693T3 (es)
NO (1) NO313806B1 (es)
NZ (1) NZ503251A (es)
PT (1) PT1007809E (es)
WO (1) WO1999010613A1 (es)

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DE102012201518A1 (de) * 2012-02-02 2013-08-08 Sgl Carbon Se Verstärkungssystem für Bauwerke

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Also Published As

Publication number Publication date
CN1131365C (zh) 2003-12-17
NZ503251A (en) 2001-07-27
EP1007809A1 (de) 2000-06-14
PT1007809E (pt) 2002-04-29
WO1999010613A1 (de) 1999-03-04
CA2301755C (en) 2007-11-13
AU740242B2 (en) 2001-11-01
CA2301755A1 (en) 1999-03-04
DE59801706D1 (de) 2001-11-15
NO313806B1 (no) 2002-12-02
AU8621098A (en) 1999-03-16
JP4202596B2 (ja) 2008-12-24
US6851232B1 (en) 2005-02-08
ATE206794T1 (de) 2001-10-15
JP2001514349A (ja) 2001-09-11
NO20000887L (no) 2000-02-25
CN1268205A (zh) 2000-09-27
NO20000887D0 (no) 2000-02-23
ES2165693T3 (es) 2002-03-16
BR9812141A (pt) 2000-07-18

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