EP0187075B1 - Armature métallique pour béton armé - Google Patents

Armature métallique pour béton armé Download PDF

Info

Publication number
EP0187075B1
EP0187075B1 EP85402355A EP85402355A EP0187075B1 EP 0187075 B1 EP0187075 B1 EP 0187075B1 EP 85402355 A EP85402355 A EP 85402355A EP 85402355 A EP85402355 A EP 85402355A EP 0187075 B1 EP0187075 B1 EP 0187075B1
Authority
EP
European Patent Office
Prior art keywords
ribs
reinforced concrete
slightly
section
web
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
Application number
EP85402355A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0187075A1 (fr
Inventor
Jean Albert Edouard René Corny
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.)
Acieries De Montereau Sam Ste
Original Assignee
Acieries De Montereau Sam Ste
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 Acieries De Montereau Sam Ste filed Critical Acieries De Montereau Sam Ste
Priority to AT85402355T priority Critical patent/ATE35836T1/de
Publication of EP0187075A1 publication Critical patent/EP0187075A1/fr
Application granted granted Critical
Publication of EP0187075B1 publication Critical patent/EP0187075B1/fr
Expired 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
    • E04C5/01—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

Definitions

  • the present invention relates to a metal frame for reinforced concrete.
  • metal reinforcements for reinforced concrete hot formed, in the form of bars, with an oval cross section, provided with oblique ribs each extending over approximately 180 ° from the periphery of the bar, the inclination of said ribs. about the axis being about 60 °.
  • the rollers of the latter subject the bar to torsional forces generating in the latter stresses which are released when said bar is subsequently subjected to a bending force.
  • Document FR-A-1 564 544 discloses an armature comprising a cruciform cross-section whose wings are joined 'by oblique ribs, the whole being substantially inscribed in a square.
  • Such a frame has very large variations in its section which will generate torsional forces during dressing.
  • Document FR-A- 2,031,405 discloses an armature comprising a core with a convex polygonal section and comprising oblique ribs, the whole being inscribed in a circle and being obtained, by cold forming, of a round rod .
  • the present invention which overcomes these drawbacks, relates to a reinforcement of the kind of those having a core having a convex polygonal section whose vertices are slightly truncated, comprising on its slightly curved faces, oblique ribs and whose section is substantially in a circle, characterized in that the distance separating the most domed part of the ribs and the center of the core is slightly less than that separating said center and said truncated vertices.
  • Figure 1 is an elevational view of a frame according to the invention
  • Figures 2, 3 and 4 are sections made by planes passing respectively through the lines II-II, III-III and IV-IV of Figure 1.
  • the armature has a central core 1, the cross section of which takes the form of a square, the vertices 2 of which are truncated, defining four lateral faces 3 each having ribs 4 oblique to each other. at axis XX, of the armature and extending over a little less than 90 °.
  • the angle formed between the ribs and the aforementioned axis is of the order of 25 ° to 45 °.
  • the assembly is substantially in a circle and the vertices 2, truncated, are rounded.
  • the distance D1 separating the center C of the frame and the apex of the nevure is slightly less than that D2 separating said center and an apex 2 of the core.
  • the ribs of two adjacent faces are associated in pairs so that the apex of each rib on one face is contained in an oblique plane passing through the apex of a rib on the other face.
  • the trace of one of these planes appears in Y-Y, in Figure 1.
  • the ribs of the other two faces are inclined in opposite directions.
  • the faces of the core are slightly curved.
  • the sections of the armature are substantially uniform and are inscribed in a circle.
  • the frame may have a polygonal section with sides defining n faces each having, or some of them, ribs similar to those 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forging (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Road Signs Or Road Markings (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Wire Processing (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP85402355A 1984-12-07 1985-11-29 Armature métallique pour béton armé Expired EP0187075B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402355T ATE35836T1 (de) 1984-12-07 1985-11-29 Stahlbewehrung fuer beton.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418705A FR2574453B1 (fr) 1984-12-07 1984-12-07 Armature metallique pour beton arme
FR8418705 1984-12-07

Publications (2)

Publication Number Publication Date
EP0187075A1 EP0187075A1 (fr) 1986-07-09
EP0187075B1 true EP0187075B1 (fr) 1988-07-20

Family

ID=9310351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402355A Expired EP0187075B1 (fr) 1984-12-07 1985-11-29 Armature métallique pour béton armé

Country Status (14)

Country Link
EP (1) EP0187075B1 (da)
JP (1) JPS61191752A (da)
AT (1) ATE35836T1 (da)
AU (1) AU573927B2 (da)
BR (1) BR8506091A (da)
DE (1) DE3563864D1 (da)
DK (1) DK168830B1 (da)
ES (1) ES295972Y (da)
FR (1) FR2574453B1 (da)
GR (1) GR852916B (da)
HK (1) HK77589A (da)
PT (1) PT81562B (da)
SG (1) SG78688G (da)
ZA (1) ZA859048B (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU204452B (en) * 1989-12-07 1992-01-28 December 4 Drotmuevek Steel wire for reinforcing embedding material first for reinforcing concrete and method for producing such steel wire
DE102013208413B4 (de) 2013-05-07 2019-10-10 Badische Stahlwerke Gmbh Betonstahl, Herstellungsverfahren für Betonstahl
CN104164949A (zh) * 2014-08-25 2014-11-26 江苏永钢集团有限公司 防止制箍时翘曲的公称直径不超过20mm的螺纹钢筋

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR501776A (fr) * 1919-07-19 1920-04-23 Grover Cleveland Royse éléments de renforcement pour constructions en béton
FR1564544A (da) * 1967-01-14 1969-04-25
DE1907129A1 (de) * 1969-02-13 1970-09-03 Hochwald Drahtwerk Gmbh Bewehrungsstab mit im Kaltverformungsverfahren hergestellten,schraeg zur Laengsachse verlaufenden Rippen auf seiner Peripherie
JPS5222623B2 (da) * 1972-10-17 1977-06-18
CH651616A5 (en) * 1981-06-04 1985-09-30 Moos Stahl Ag Reinforcing bar for reinforced concrete
AT376469B (de) * 1982-11-29 1984-11-26 Hufnagl Walter Verfahren zur herstellung von geripptem betonbewehrungsstahl

Also Published As

Publication number Publication date
EP0187075A1 (fr) 1986-07-09
FR2574453A1 (fr) 1986-06-13
AU5042285A (en) 1986-06-12
BR8506091A (pt) 1986-08-19
HK77589A (en) 1989-10-06
SG78688G (en) 1989-09-01
PT81562A (fr) 1985-12-01
DE3563864D1 (en) 1988-08-25
ZA859048B (en) 1986-11-26
ES295972U (es) 1987-06-16
FR2574453B1 (fr) 1987-12-18
ES295972Y (es) 1988-10-01
DK168830B1 (da) 1994-06-20
ATE35836T1 (de) 1988-08-15
DK565685D0 (da) 1985-12-06
DK565685A (da) 1986-06-08
GR852916B (da) 1986-04-07
AU573927B2 (en) 1988-06-23
PT81562B (pt) 1987-09-18
JPS61191752A (ja) 1986-08-26

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