EP0892127A1 - Dispositif pour induire des fissures - Google Patents

Dispositif pour induire des fissures Download PDF

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Publication number
EP0892127A1
EP0892127A1 EP98110240A EP98110240A EP0892127A1 EP 0892127 A1 EP0892127 A1 EP 0892127A1 EP 98110240 A EP98110240 A EP 98110240A EP 98110240 A EP98110240 A EP 98110240A EP 0892127 A1 EP0892127 A1 EP 0892127A1
Authority
EP
European Patent Office
Prior art keywords
formwork
concrete
strip
formwork wall
built
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
EP98110240A
Other languages
German (de)
English (en)
Other versions
EP0892127B1 (fr
Inventor
Willibald Fischer
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0892127A1 publication Critical patent/EP0892127A1/fr
Application granted granted Critical
Publication of EP0892127B1 publication Critical patent/EP0892127B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6806—Waterstops
    • 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
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
    • E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
    • E04G11/085—End form panels for walls

Definitions

  • the invention relates to a device for generating a predetermined crack in one Concrete part of the type explained in the preamble of claim 1.
  • Desired cracks in concrete parts are provided to prevent the concrete from hardening generate inevitable shrinkage cracks at a predetermined location in the concrete part, where the reduction in the resilience of the Concrete does not interfere or where it can be filled more easily.
  • predetermined crack points have been created by so-called dummy joints, in which as considered in the preamble of claim 1, a concrete impermeable installation part in the form of a fiber cement corrugated sheet or a trapezoidal sheet at a predetermined Place in the cross section of the concrete part is introduced, so that this Make a cavity in the concrete filled by the built-in part, which one Weakening the cross section of the concrete part causes so that shrinkage cracks preferably in the area of the built-in part.
  • the installation of this installation part and above all, the holding of the built-in part against the predetermined point however, the pressure exerted by the filled concrete is relatively difficult and labor intensive.
  • the invention is therefore based on the object of a device for generating a Provide predetermined crack location in a concrete part that is easy and inexpensive to handle is.
  • the predetermined tear point is simple by covering the openings of a formwork wall made of perforated material formed so that there is no concrete connection between the Concrete on one side of the formwork wall and the concrete on the other side the formwork wall forms, while outside of that covered by the built-in part Area such a concrete connection exists.
  • the formwork material thus acts as a kind of carrier for the built-in part, but can extend far beyond the built-in part extend out so that it is at the predetermined location easily and quickly can be attached.
  • the configuration of the device according to the invention is particularly expedient according to claim 2 as a shuttering element, such as for producing a Construction joints are used.
  • Construction joints are inevitable if, for example Concrete parts have to be poured separately in several sections, for example if new concrete is poured between the pouring of the two sections must be mixed or if there is a work break between two concreting sections lies.
  • the predetermined tear point is simultaneously at one point relocated, which inherently weakens the load capacity of the concrete part caused.
  • the two weakening measures can thus be carried out at one point in the Emphasized to be summarized.
  • the device according to the invention offers the very advantageous Possibility to install a joint seal at the same time, which in the case of water-contaminated Concrete parts are also used in the usual dummy joints. Due to the design according to the invention, the joint seal is fixed in advance with the Formwork wall to connect and can be installed so that extensive Loafing work that was previously used to attach the joint seal, for example the reinforcement inside the component are necessary, can be omitted.
  • Claims 4 and 5 describe alternative ways of sealing a joint in Form of an elastic joint tape or a joint seal in the form of a joint plate to install.
  • Claim 7 describes a particularly preferred material for the built-in part.
  • the formwork wall can according to claim 8 on a flat strip of openwork material are formed.
  • Claim 9 describes a particularly preferred material for the formwork wall.
  • the formwork wall and the Built-in part according to claim 10 previously created as a unit and only then in the formwork or between the reinforcement of the concrete part.
  • Claims 11 to 13 describe particularly preferred embodiments of a as a unit of prefabricated formwork element for various applications.
  • a concrete cover strip can be molded directly.
  • the device 1 shows a device 1 according to the invention for generating a predetermined crack point in FIG a concrete part 2 shown.
  • the device 1 is a shuttering element for shuttering the interface between a concreting section 2a and a concreting section 2b to be subsequently concreted and formed as a unit prefabricated.
  • the device 1 contains a formwork wall 3 in the form of a flat strip of an openwork material, but the openings are designed so that concrete swell through the openings can, but the material is still suitable as formwork. By the concrete swelling through provides a good connection between the first concreting section 2a and the second concreting section 2b reached.
  • the formwork wall 3 preferably consists of one known from EP-PS 507 054 Material in the form of between cross bars 4 and longitudinal bars 5 of a grid mat made of metal, preferably structural steel, welded expanded metal panel 6. Die Breakthroughs in the expanded metal panel 6 allow on the one hand that concrete easily the opposite side oozes out when the first concreting section 2a is poured is, so that later the second concreting section 2b to the by the can firmly bind protruding and hardened concrete.
  • Both longitudinal edges of the formwork wall 3 are each formed by a molded concrete cover strip 7 covered and are spaced by the concrete cover strips 7 held to the outer surfaces of the concrete part 2.
  • An installation part 8 made of a material is fastened in the middle on the formwork wall 3, that is impermeable to concrete.
  • the installation part 8 covers a predetermined area A of the formwork wall 3, so that there is no connection between the concreting sections 2a and 2b can take place.
  • the installation part 8 preferably consists of a grid mat composed of cross bars 9 and longitudinal bars 10 Metal, preferably structural steel, and a plastic film attached to the mesh mat 11, which is preferably shrunk on both sides of the cross and longitudinal bars of the grid mat as in EP-PS 0 075 641.
  • the installation part 8 is installed in the formwork for the concrete part 2 before the device 1 is installed firmly connected to the formwork wall 3, for example by bridging.
  • the width of the area A, which is covered by the installation part 8, is dimensioned in such a way that the purpose of concentrating shrinkage cracks in the area of the mounting part 8 is achieved becomes.
  • the installation part 8 preferably extends over approximately one third of the total width B of the concrete part 2.
  • the entire shuttering element extends over the entire width B of the Concrete part 2, i.e. over the entire cross section, but on one side of the Concrete part 2 by an arranged on the formwork, not shown, not shown Triangular strip a triangular groove 12 can be formed, the tip abuts the top of the adjacent concrete cover strip 7 of the device 1.
  • shrinkage cracks occur when the concrete hardens, they concentrate in the area of the generated by the shuttering element of the device 1 according to the invention Construction joint and the weakening of the built-in part 8 Cross section of the concrete part 2 ..
  • FIG. 2 shows a further exemplary embodiment of a device according to the invention 21, which is used for water-loaded concrete parts 2.
  • the same reference numerals designate the same or comparable parts as in FIG. 1 and are not explained again.
  • the device 21 consists of two separate, flat strips of the one already described Formwork material, between which a bracket 22 for one of the usual elastic joint tapes 23 is arranged.
  • the bracket 22 consists of a to a basket with a substantially U-shaped cross section curved mesh from structural steel bars, the mesh openings of which remain open.
  • the U-shaped bracket 23 is so welded between the strips 3a and 3b of the formwork wall that their Legs protrude on both sides by about the length of their length.
  • the bracket 22 is preferably the same length as the joint tape 23, so that the joint tape 23 in the usual Half each in the concreting section 2a and half in the concreting section 2b can be embedded and extending across the through the formwork wall 3a, 3b extends construction joint.
  • the device 21 is a unit made of formwork wall 3a, 3b, bracket 22 and Installation part 8a, 8b in the form of a shuttering element for shuttering a construction joint formed between the concreting sections 2a and 2b.
  • the joint tape 23 can be placed in the holder 22 in advance and, if necessary, attached there, for example, by looking at the open side of the U-shaped cross section of the bracket 22 bends together.
  • the device 21 does not contain any concrete cover strips, but is arranged on a reinforcement 24 that is continuous extends through the two concreting sections 2a and 2b. From the outside of the concrete part 2, two of the grooves 12 extend in this exemplary embodiment the concrete part 2 into it, which here by strips with a trapezoidal cross-section were generated.
  • the device 31 is also a shuttering element designed for water-contaminated concrete parts 2 and as a unit with two levels Strips 3a and 3b of a formwork wall and one between the strips 3a, 3b welded joint seal in the form of a sheet metal strip 32.
  • a strip-shaped installation part 8a and 8b fastened from the grid mat shrunk with plastic film so that the two Strips 8a, 8b of the built-in part an area A of the perforated formwork wall 3a, 3b cover about one third of the total width B of the concrete part 2 corresponds.
  • the device 31 is also with the outer longitudinal edges of the formwork walls 3a, 3b between the continuous reinforcement 24 for the concrete part 2 attached and arranged in a place where a formwork of the first to be cast Concreting section 2a against a later pouring concreting section 2b is required and predetermined. Again, on both sides of the concrete part 2 grooves 12 arranged with a triangular cross section, the tips are aligned with the longitudinal edges of the formwork wall 3a, 3b.
  • the Formwork wall made of other openwork formwork materials, such as a perforated plate.
  • the built-in part can also be made from one other, concrete-impermeable material, such as a plastic or Metal plate or the like.
  • the devices according to FIGS. 2 and 3 can also be provided with concrete cover strips and directly to the external formwork for push the concrete part 2. If necessary, the area covered by the installation part can be be enlarged or reduced.
  • the device according to the invention is still Can also be used for smaller concrete parts that are cast in one go can, and also allows exact positioning and precise location of the installation part under the pressure of the poured concrete.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Forging (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
EP98110240A 1997-07-15 1998-06-04 Coffrage et procédé pour induire des fissures Expired - Lifetime EP0892127B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29712510U 1997-07-15
DE29712510U DE29712510U1 (de) 1997-07-15 1997-07-15 Vorrichtung zum Erzeugen einer Sollrißstelle

Publications (2)

Publication Number Publication Date
EP0892127A1 true EP0892127A1 (fr) 1999-01-20
EP0892127B1 EP0892127B1 (fr) 2004-03-03

Family

ID=8043156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98110240A Expired - Lifetime EP0892127B1 (fr) 1997-07-15 1998-06-04 Coffrage et procédé pour induire des fissures

Country Status (5)

Country Link
EP (1) EP0892127B1 (fr)
AT (1) ATE261040T1 (fr)
DE (2) DE29712510U1 (fr)
ES (1) ES2217453T3 (fr)
PT (1) PT892127E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1944421A1 (fr) 2007-01-10 2008-07-16 FWR Solutions GmbH Coffrage
EP1980677A2 (fr) * 2007-04-03 2008-10-15 Peca Verbundtechnik GmbH Coque de production d'une ligne de rupture théorique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136819B4 (de) * 2001-07-27 2006-02-09 Oswald, Peter Bewehrungselement für flächige Betonteile

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769592A (en) * 1954-11-04 1957-03-13 Chester Irving Williams Improvements in or relating to a crack-controlling joint strip
EP0075641A2 (fr) 1981-09-28 1983-04-06 Angelika Kirchner-Carl Matériau composite
DE3405187A1 (de) * 1983-10-28 1985-05-09 Georg Carl & Sohn GmbH & Co KG, 8644 Pressig Abziehbalken
EP0507054A1 (fr) 1991-04-05 1992-10-07 Peca-Verbundtechnik Gmbh Elément de coffrage
DE9203276U1 (fr) * 1992-03-11 1993-07-15 Peca-Verbundtechnik Gmbh, 8312 Dingolfing, De
DE9301566U1 (de) * 1992-09-08 1994-01-20 Peca Verbundtechnik Abschalelement
DE9311710U1 (de) * 1993-08-05 1994-12-01 Peca Verbundtechnik Schalung zum Herstellen einer Betonplatte
WO1996010120A1 (fr) * 1994-09-27 1996-04-04 Lesa Systems Limited Procede et appareil de formation de dalles de plancher adjacentes

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB769592A (en) * 1954-11-04 1957-03-13 Chester Irving Williams Improvements in or relating to a crack-controlling joint strip
EP0075641A2 (fr) 1981-09-28 1983-04-06 Angelika Kirchner-Carl Matériau composite
DE3405187A1 (de) * 1983-10-28 1985-05-09 Georg Carl & Sohn GmbH & Co KG, 8644 Pressig Abziehbalken
EP0507054A1 (fr) 1991-04-05 1992-10-07 Peca-Verbundtechnik Gmbh Elément de coffrage
DE9203276U1 (fr) * 1992-03-11 1993-07-15 Peca-Verbundtechnik Gmbh, 8312 Dingolfing, De
DE9301566U1 (de) * 1992-09-08 1994-01-20 Peca Verbundtechnik Abschalelement
DE9311710U1 (de) * 1993-08-05 1994-12-01 Peca Verbundtechnik Schalung zum Herstellen einer Betonplatte
WO1996010120A1 (fr) * 1994-09-27 1996-04-04 Lesa Systems Limited Procede et appareil de formation de dalles de plancher adjacentes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1944421A1 (fr) 2007-01-10 2008-07-16 FWR Solutions GmbH Coffrage
DE102007001513A1 (de) 2007-01-10 2008-07-17 Fwr Solutions Gmbh Schalung
EP1980677A2 (fr) * 2007-04-03 2008-10-15 Peca Verbundtechnik GmbH Coque de production d'une ligne de rupture théorique
EP1980677A3 (fr) * 2007-04-03 2011-11-23 Peca Verbundtechnik GmbH Coque de production d'une ligne de rupture théorique

Also Published As

Publication number Publication date
ES2217453T3 (es) 2004-11-01
DE29712510U1 (de) 1997-09-25
ATE261040T1 (de) 2004-03-15
PT892127E (pt) 2004-07-30
EP0892127B1 (fr) 2004-03-03
DE59810879D1 (de) 2004-04-08

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