EP0307680A1 - Barre d'armature pour béton, en particulier barre nervurée pour béton - Google Patents

Barre d'armature pour béton, en particulier barre nervurée pour béton Download PDF

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Publication number
EP0307680A1
EP0307680A1 EP88113880A EP88113880A EP0307680A1 EP 0307680 A1 EP0307680 A1 EP 0307680A1 EP 88113880 A EP88113880 A EP 88113880A EP 88113880 A EP88113880 A EP 88113880A EP 0307680 A1 EP0307680 A1 EP 0307680A1
Authority
EP
European Patent Office
Prior art keywords
ribs
concrete reinforcement
reinforcement bar
rib
bar according
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
EP88113880A
Other languages
German (de)
English (en)
Other versions
EP0307680B1 (fr
Inventor
Widmann Aktiengesel Dyckerhoff
S A Arbed
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.)
Walter Bau AG
Arcelor Luxembourg SA
Original Assignee
Dyckerhoff and Widmann AG
Arbed 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 Dyckerhoff and Widmann AG, Arbed SA filed Critical Dyckerhoff and Widmann AG
Priority to AT88113880T priority Critical patent/ATE72472T1/de
Publication of EP0307680A1 publication Critical patent/EP0307680A1/fr
Application granted granted Critical
Publication of EP0307680B1 publication Critical patent/EP0307680B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B21C51/005—Marking devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
    • 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
    • E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves

Definitions

  • the invention relates to a reinforcing steel bar according to the preamble of claim 1.
  • a measure of the bond is the so-called related rib area - the ribs of a concrete reinforcement bar are also assigned the task of identifying the product with regard to steel type and origin.
  • the Euronorm 80-85 stipulates that two rows of parallel oblique ribs, which are opposite each other, should be provided to identify the steel grade Fe B 400, whereby the oblique ribs on the two circumferential halves must have different distances.
  • the steel grade Fe B 500 is characterized by two rows of diagonal ribs, one row of parallel diagonal ribs and the other row of alternating inclined ribs to the bar axis.
  • the country of origin and the manufacturing plant are identified by a certain number of normal diagonal ribs between widened diagonal ribs.
  • the concrete reinforcement bar is thus identified by means of different characteristic rib arrangements.
  • screwable concrete reinforcement bars known as GEWI steel
  • the ribs are arranged along at least one helical line and parts of a single or multiple thread for screwing on a form with an appropriate counter thread anchoring or connecting body.
  • the threaded connection that is, to be able to keep the anchoring or connecting body as short as possible
  • the aim is that the longitudinal section of the reinforcing bar in a axial plane in the area of the ribs shows a regular smooth undulating course (DE-OS 35 17 638). The clear distance between the ribs then corresponds approximately to the rib width.
  • the object of the invention is to arrange and design the ribs in a ribbed steel according to the preamble of claim 1, in which the rib arrangement and rib shape serves to identify the type of steel and / or the origin, in such a way that anchoring or anchoring at any interfaces of this concrete reinforcement bar Connection body can be screwed on.
  • ribs which have a position lying outside the helical line of a single-threaded thread or the helical lines of a two-thread or multi-threaded thread or are widened have a rib height which is reduced to such an extent that they unscrew the associated anchoring or connecting body is not hindered.
  • these ribs cannot participate in the load-bearing function of the threaded connection, so that the length of the anchoring or connecting body must be increased for the same mechanical stress.
  • a reinforcing steel is preferably used which has increased strength in the edge and rib area compared to the core, for example a reinforcing steel as described under the trade name Tempcore- Steel (registered as a trademark) has become known.
  • Such steels are produced in such a way that they are so intensely cooled in the edge zone by a water cooling section when they emerge from the last rolling stand of a hot rolling mill that there is a hardness structure in this zone and the hardened edge zone after the rod emerges from the water cooling section due to the heat content the core zone is started. They not only have increased strength compared to the core, but also a higher coefficient of friction on their surface and thus in the rib area compared to other hot-rolled concrete reinforcement bars. An increased coefficient of friction is desirable with regard to the self-locking of the threaded connection.
  • the concrete reinforcement bar 1 shown in FIG. 1 has a circular core cross section and two mutually opposite rows of ribs 2 and 3. This rip pen are arranged along a first helix of a single-start thread. Between the ribs 2 there are additional ribs 4, which are arranged along a second helix offset by 180 ° with respect to the first helix, so that a rib arrangement corresponding to a two-start thread is realized on the rod halves shown in FIG. 1 above, while the rib arrangement on the lower half of the rod only corresponds to a single thread.
  • the additional ribs 4 have a rib height that is so far reduced compared to the ribs 2 or 3 that the screwing on of an associated catchy anchoring or connecting body is not hindered by them. This means that no forces can be introduced into the anchoring or connecting body via these additional ribs 4. This is possible with the rib arrangement shown in FIG. 1, however, if the ribs 4 are formed at the same height as the ribs 2 and the associated anchoring or connecting body has a two-start internal thread.
  • the load capacity is reduced compared to a conventional two-start threaded connection of the same pitch because of the missing additional ribs on the lower half of the rod and because of the widened ribs 5.
  • the length of the anchoring or connecting body would have to be increased. That can be counteracted by increasing the strength in the area critical for the loading of the threaded connection, that is to say in the edge and rib area of the concrete reinforcement bar.
  • a steel is preferably used, in which a quenching and tempering treatment from the rolling heat results in an increased strength compared to the core in the edge and rib area of the concrete reinforcement bar.
  • the arrangement of the ribs 2 and 3 corresponds to that of the ribs with the same numbering in the first exemplary embodiment according to FIG. 1.
  • the additional ribs 4 are not arranged here along a screw line offset by 180 ° to form a two-start thread, but have a different inclination than the ribs 2.
  • the top half of the bar of FIG. 2 has a row of ribs made of inclined ribs 2 and 4 alternatingly inclined to the bar axis in plan view.
  • the additional ribs 4 must have a rib height which is so far reduced compared to the ribs 2 that the screwing on of the associated anchoring or connecting body is not hindered by them.
  • the diameter D of the cylindrical envelope of the additional ribs 4 shown in FIG. 2 must be smaller than the inside diameter of the thread of the anchoring or connecting body to be screwed onto the concrete reinforcement bar.
  • the bond is increased in both exemplary embodiments by the additional ribs 4 or projections formed in another way. If the additional ribs 4 have a significantly lower height than the ribs 2 or 3, a particularly soft bond is achieved. If necessary, additional ribs 4 of correspondingly low height can be provided between the ribs 2 or 3. Likewise, incisions or impressions 6 can also be provided in the concrete reinforcement rod in order to improve the composite effect of the rod in the concrete and at the same time to have further identification means available.
  • the ribs each extend almost over half the rod circumference at full height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Surgical Instruments (AREA)
EP88113880A 1987-09-11 1988-08-25 Barre d'armature pour béton, en particulier barre nervurée pour béton Expired - Lifetime EP0307680B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88113880T ATE72472T1 (de) 1987-09-11 1988-08-25 Betonbewehrungsstab, insbesondere betonrippenstab.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3730489 1987-09-11
DE19873730489 DE3730489A1 (de) 1987-09-11 1987-09-11 Betonbewehrungsstab, insbesondere betonrippenstab

Publications (2)

Publication Number Publication Date
EP0307680A1 true EP0307680A1 (fr) 1989-03-22
EP0307680B1 EP0307680B1 (fr) 1992-02-05

Family

ID=6335758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113880A Expired - Lifetime EP0307680B1 (fr) 1987-09-11 1988-08-25 Barre d'armature pour béton, en particulier barre nervurée pour béton

Country Status (4)

Country Link
EP (1) EP0307680B1 (fr)
AT (1) ATE72472T1 (fr)
DE (3) DE8717650U1 (fr)
ES (1) ES2028214T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010158A1 (fr) * 1996-09-06 1998-03-12 Reid Construction Systems Pty. Ltd. Element de fixation filete pourvu d'un indicateur de profondeur d'insertion
CN115121610A (zh) * 2022-06-09 2022-09-30 安阳钢铁股份有限公司 一种多线切分螺纹钢分线识别方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4011486A1 (de) * 1990-04-09 1991-10-10 Inst Stahlbeton Bewehrung Ev Betonrippenstahl mit kaltgewalzten schraegrippen und dessen verwendung
CN112551084B (zh) * 2020-10-22 2022-07-29 沈阳建筑大学 一种预制构件混凝土布料的螺旋输送量的分析方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1058863A (en) * 1964-09-17 1967-02-15 Baustahlgewebe Gmbh Method of producing a ribbed reinforcing bar for concrete
FR2249222A1 (en) * 1973-10-30 1975-05-23 Kobe Steel Ltd Threaded steel bar for reinforcing concrete - has lozenge shaped projections on its outer surface engaging in sleeve
FR2335640A1 (fr) * 1975-12-19 1977-07-15 Niebauer Jun Josef Procede de fabrication d'un tire-fil et tire-fil obtenu selon ce procede
DE2622524A1 (de) * 1976-05-20 1977-11-24 Janovic Kassian Anton Dipl Ing Gerippter betonstahl und spannstahl
DE3131078C1 (de) * 1981-08-06 1982-10-28 Dyckerhoff & Widmann AG, 8000 München "Verankerungs- oder Verbindungskörper für Stahlstäbe mit Oberflächenprofilierungen in Form von Rippen"
EP0172544A2 (fr) * 1984-08-23 1986-02-26 Dyckerhoff & Widmann Aktiengesellschaft Procédé de traitement thermique d'aciers laminés à chaud sous forme de barres ou de fils pour béton précontraint
WO1986006777A1 (fr) * 1985-05-15 1986-11-20 Ulrich Finsterwalder Barre filetee

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH484340A (de) * 1967-12-28 1970-01-15 Von Roll Ag Armierungsstab
DE2059168C3 (de) * 1970-12-02 1978-04-27 Kulessa, Gerhard, Dipl.-Ing., 1000 Berlin Betonbewehrungsstab
DE3444583A1 (de) * 1984-12-06 1986-06-19 Montanhandel Peter Richter, 4000 Düsseldorf Rundstab mit aussengewinde

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1058863A (en) * 1964-09-17 1967-02-15 Baustahlgewebe Gmbh Method of producing a ribbed reinforcing bar for concrete
FR2249222A1 (en) * 1973-10-30 1975-05-23 Kobe Steel Ltd Threaded steel bar for reinforcing concrete - has lozenge shaped projections on its outer surface engaging in sleeve
FR2335640A1 (fr) * 1975-12-19 1977-07-15 Niebauer Jun Josef Procede de fabrication d'un tire-fil et tire-fil obtenu selon ce procede
DE2622524A1 (de) * 1976-05-20 1977-11-24 Janovic Kassian Anton Dipl Ing Gerippter betonstahl und spannstahl
DE3131078C1 (de) * 1981-08-06 1982-10-28 Dyckerhoff & Widmann AG, 8000 München "Verankerungs- oder Verbindungskörper für Stahlstäbe mit Oberflächenprofilierungen in Form von Rippen"
EP0172544A2 (fr) * 1984-08-23 1986-02-26 Dyckerhoff & Widmann Aktiengesellschaft Procédé de traitement thermique d'aciers laminés à chaud sous forme de barres ou de fils pour béton précontraint
WO1986006777A1 (fr) * 1985-05-15 1986-11-20 Ulrich Finsterwalder Barre filetee

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010158A1 (fr) * 1996-09-06 1998-03-12 Reid Construction Systems Pty. Ltd. Element de fixation filete pourvu d'un indicateur de profondeur d'insertion
CN115121610A (zh) * 2022-06-09 2022-09-30 安阳钢铁股份有限公司 一种多线切分螺纹钢分线识别方法

Also Published As

Publication number Publication date
EP0307680B1 (fr) 1992-02-05
ATE72472T1 (de) 1992-02-15
ES2028214T3 (es) 1992-07-01
DE8717650U1 (de) 1989-08-31
DE3730489A1 (de) 1989-03-30
DE3868306D1 (de) 1992-03-19

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