EP0326157A2 - Barre d'armature de béton en acier, repliable - Google Patents

Barre d'armature de béton en acier, repliable Download PDF

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Publication number
EP0326157A2
EP0326157A2 EP89101445A EP89101445A EP0326157A2 EP 0326157 A2 EP0326157 A2 EP 0326157A2 EP 89101445 A EP89101445 A EP 89101445A EP 89101445 A EP89101445 A EP 89101445A EP 0326157 A2 EP0326157 A2 EP 0326157A2
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EP
European Patent Office
Prior art keywords
reinforcing steel
bending
percent
areas
weight
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
EP89101445A
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German (de)
English (en)
Other versions
EP0326157A3 (en
EP0326157B1 (fr
Inventor
Heribert Hiendl
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE3816930A external-priority patent/DE3816930A1/de
Application filed by Individual filed Critical Individual
Priority to AT89101445T priority Critical patent/ATE98322T1/de
Publication of EP0326157A2 publication Critical patent/EP0326157A2/fr
Publication of EP0326157A3 publication Critical patent/EP0326157A3/de
Application granted granted Critical
Publication of EP0326157B1 publication Critical patent/EP0326157B1/fr
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
    • E04C5/01—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
    • 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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/125—Reinforcement continuity box

Definitions

  • the invention relates to a structural steel capable of being bent back, i.e. Reinforcing steel according to the preamble of claim 1 and to a reinforcement connection produced using such a reinforcing steel according to the preamble of claim 10.
  • structural steels are used in a wide variety of ways, and in particular as reinforcement for concrete components of the most varied types, these structural steels generally being provided with ribbing or profiling on their surface, which can be designed in a wide variety of ways, in order to ensure sufficient Achieve integration in concrete.
  • reinforcement connections which make it unnecessary to lead the connection reinforcement through the formwork of the concrete component created first, consist of a storage element, which can have a wide variety of designs and via which the reinforcement bars, each formed by a length of reinforcing steel, provided with a corresponding ribbing or profile project outwards with a first partial length (anchoring area). With a second partial length (connection area or part) bent essentially at right angles to the first partial length, the reinforcement bars are arranged covered in the interior of the storage element.
  • Such a reinforcement connection is used in the concrete formwork for the concrete component to be created first such that the anchoring areas of the reinforcement bars are embedded in the concrete of the concrete component created first and the connecting parts of the reinforcement bars are inside the storage element near the formwork wall.
  • the connecting parts of the reinforcing bars are then exposed and bent open with a suitable tool, so that the bent or bent back connecting parts can be embedded in the concrete of the concrete component to be connected and thus the connecting reinforcement at the transition area form.
  • a suitable tool so that the bent or bent back connecting parts can be embedded in the concrete of the concrete component to be connected and thus the connecting reinforcement at the transition area form.
  • the invention has for its object to show a reinforcing steel that after bending (especially around small bending radii) and back bending compared to known structural steels is much higher both statically and dynamically and can therefore be used in particular where such bending and later bending back from the workflow is necessary, but is at least advantageous.
  • the object of the invention is also to show a reinforcement connection which has improved properties compared to known reinforcement connections and in which, especially in spite of the necessary multiple bending of the reinforcement bars (especially also with a small bending radius), an improved permanent pivot strength is achieved for the reinforcement bars.
  • the reinforcing steel according to the invention follows at least in certain areas, which follow one another at preferably predetermined intervals in the running direction of the reinforcing steel in the production or in the ribbing or profiling of the reinforcing steel are provided where the reinforcing steel can be bent and then bent back in use, does not have the otherwise provided profiling or ribbing or is only provided with ribbing or profiling on part of its circumference, is a very decisive improvement in the reinforcing steel according to the invention the fatigue strength achieved after bending and re-bending. At the same time, however, the required integration of the reinforcing steel in the concrete is guaranteed.
  • the reinforcing steel according to the invention is particularly advantageously suitable for the reinforcement bars of reinforcement connections.
  • the use of the reinforcing steel according to the invention is, however, not limited to this special application, but the reinforcing steel according to the invention can be used with the advantages described above wherever a bending and subsequent bending back of a later loaded reinforcing steel is necessary or expedient from the workflow.
  • this reinforcing steel is bent in such a way that with respect to this bend, a portion of the cross-sectional circumference that does not have the profiling or ribbing is on the outside.
  • a heat-treated steel that is to say produced, for example, by the “TEMPCORE process”
  • this is preferably made from a steel alloy which contains 0.12 to 0.22 percent by weight of carbon and 0.5 to 1.0 percent by weight Manganese, less than 0.05 weight percent phosphorus, less than 0.05 weight percent sulfur, less than 0.6 weight percent copper, less than 0.05 weight percent tin, and less than 0.018 weight percent nitrogen.
  • this is preferably made of a steel alloy which contains 0.06 to 0.20 percent by weight of carbon, 0.35 to 0.85 percent by weight of manganese, less than 0.6 percent by weight of copper and less than 0 , 50 percent by weight of silicon, the carbon content preferably being 0.08 to 0.14 percent by weight.
  • this is preferably made of a steel alloy which contains less than 0.24% by weight of carbon, less than 1.5% by weight of manganese and less than 0.12% by weight of vanadium, the carbon content preferably being 0.16 to 0.22% by weight , the manganese content is preferably 0.8 to 1.2 weight percent and the vanadium content is preferably 0.03 to 0.08 weight percent.
  • the advantages achieved with the invention are due to the fact that the bending or back-bending areas are at least largely kept free from the ribbing or profiling.
  • the steel alloy for the reinforcing steel which (steel alloy) leads to a sufficiently ductile steel, also contributes to the fact that the tendency to form cracks in the reinforcing steel during bending and subsequent re-bending is significantly reduced at the bending or back-bending areas.
  • the reinforcement connection shown in the figures consists of a box-shaped or profile-shaped storage element 1, which is made of sheet steel by bending and consists essentially of a base 2 and two legs 3 made in one piece with the base 2 by angling.
  • the bottom 2 and the legs 3 extend over the entire length of the storage element 1, which runs perpendicular to the plane of the drawing in FIG. 1, and enclose the interior 4 of this storage element, which is attached to the two ends of the storage element by a not shown, removable closure element, for. B. made of foamed plastic and on the opposite side of the floor is closed by a lid, also not shown.
  • a longitudinal groove 5 is formed in the center of the base 2 and extends over the entire length of the storage element 1 and thus perpendicular to the plane of the drawing in FIG. 1, which in the embodiment shown is designed such that the base 2 in the area of this longitudinal groove into the interior 4 reaches in.
  • the longitudinal groove 5 divides the bottom 2 into two bottom regions 2 ', one of which is provided on each side of the longitudinal groove and merges into the corresponding leg 3, this leg 3 enclosing an acute angle in the shape with the adjacent bottom region 2 Geb, that the storage element is formed by the legs 3 dovetail has a cross-section.
  • the bottom 6 of the longitudinal groove 5 is parallel to the bottom 2 or the bottom portions 2 'and merges into these bottom portions each with a leg region 7.
  • Each leg area 7 includes an acute angle with the surface of the floor 6 facing away from the open side of the storage element 1 and with the surface of the adjacent floor area facing the open side of the storage element 1, so that not only the longitudinal groove 5 is perpendicular to the longitudinal extent of the Storage element extending cross-sectional plane has a dovetail cross-section, but such a cross-section is also formed in each case on the bottom regions 2 'between a leg section 7 and a leg 3.
  • Each leg 3 merges into a bend 8 on its free, distant, bottom 2 and extending over the entire length of the storage element 1, which protrudes beyond the outer surface of the leg 3 in question and forms an acute angle with this outer surface.
  • the two bends 8 initially serve to reinforce the storage element 1 or the legs 3 on their free, longitudinal edges distant from the bottom 2. Above all, the bends 8 also result in a reinforced contact surface with which the storage element 1 bears against the inner surface of the concrete formwork of the concrete component to be created first. This contact surface is formed by the transition region 9 between the respective leg 3 and the associated bend 8.
  • a coating 10 is provided on the free longitudinal edge of each leg 3 with a material that swells when wet and thus causes a sealing effect as will be described in more detail below.
  • This coating consists for example of clay or bentonite with a suitable binder and can, for. B. applied in the form of a coat of paint.
  • Suitable binders are, for example, the binders commonly used in paints.
  • the storage element 1 at least on the floor 2 or on the floor areas 2 'probably on the interior 4 facing inner surface, as well as on the outer surface facing away from the interior 4 each provided with a coating 13 which gives the storage element 1 a particularly rough surface in the area of this coating.
  • the coating 13 can be formed from sand, which is held on the relevant surfaces of the storage element 1 with the aid of a suitable adhesive or a plastic.
  • the coating 13 preferably consists of cement clinker, which is closely incorporated in the concrete of the respective concrete component and is held in the same way by a suitable adhesive or plastic on the relevant surface of the storage element.
  • Other types of coating 13 are also conceivable, provided they cause a roughened surface for the storage element 1.
  • the coating 13 can of course also be provided in other areas, for example in the area of the longitudinal groove 5 and / or in the area of the legs 3.
  • the reinforcement connection shown also has a plurality of reinforcement bars 14 which are U-shaped or bent as a bow and thus each have two legs 15 and a yoke section 16 connecting these legs to one another.
  • the reinforcement bars 14, which are arranged with their yoke sections 16 perpendicular to the longitudinal extension of the storage element 1, are guided with their legs 15 through openings provided in the floor areas 2 'in such a way that each leg 15 has the corresponding passage point (through the floor area 2') at the in the figure 1 left floor area 2 'and the other leg 15 has the corresponding passage at the right in the figure 1 floor area 2'.
  • the legs 15 are preferably connected to the bottom regions 2 'by welding or in another suitable manner.
  • Each leg 15 consists of a first section 15 ', which immediately adjoins the yoke section 16 and protrudes vertically outward beyond the inner surface 4 of the outer surface of the base 2 and together with the corresponding section 15' of the other leg 15 and the yoke section 16 forms the anchoring area of the rebar 14 in question.
  • a second section 15 ⁇ of each leg 15 is bent at 15 ′′′ (transition area) approximately perpendicular to section 15 'and arranged directly on the inner surface of the associated floor area 2' in the interior 4 of the storage element 1, the sections 15 ⁇ the connecting parts to be bent out later form the reinforcement bars 14 or the reinforcement connection.
  • the reinforcement bars 14 have a cross section corresponding to the respective static and / or dynamic requirements, which is, for example, in the order of 6 -16 mm.
  • each reinforcing bar 14 is provided on its upper or peripheral surface with a plurality of ribs 17 which extend obliquely to the longitudinal extension of the reinforcing bar and project above the surface, as they do reinforcement bars or structural steels are common.
  • These ribs 17 produced during rolling have the profile shown in FIG. 3.
  • the reinforcement bars 14 do not have such ribs 17 at the transition regions 15,, as will be explained in more detail below.
  • a low overall height for the storage element 1 is sought, that is, the smallest possible radius of curvature r in the bend region between the sections 15 'and 15' is aimed for, although a lower limit for the bending radius r must not be undercut , because otherwise during the production of the reinforcement connection of the sections 15 ⁇ , as well as during the use of the reinforcement connection, as described later, the sections 15 ⁇ are subjected to cold deformation of the steel of the reinforcement bars 14 and, above all, micro-cracks in the Reinforcing bars 14 occur, which lead to an impairment of the strength, in particular the fatigue strength of the reinforcing bars 14.
  • the reinforcement connection When producing the concrete component to be created first, namely for example the concrete wall 11, the reinforcement connection is inserted into the formwork used before the concrete is placed in such a way that the storage element 1 with its open side , ie in the area of the transitions 9 against the inner surface of a formwork wall of the formwork used, so that when the concrete wall 11 is concreted, the interior 4 of the storage element 1 thus delimited by the storage element 1 and the formwork wall is kept free from the concrete introduced into the formwork, and although also with the participation of the above-mentioned closure elements at the two ends of the storage element 1 and the lid.
  • the anchoring areas 15 '/ 16 of the reinforcing bars 14 and the bends 8 are embedded in the concrete.
  • the cover which in the simplest case is formed by a plastic film and with which the coatings 10 were also covered, is first removed. Subsequently, the now exposed sections 15 ⁇ are bent with the aid of a suitable bending tool in accordance with the arrow A in FIG. 4 (by bending back the respective transition area 15′′′) in such a way that each section 15 practically lies as axially as possible with the section 15 ′ of the leg 15 in question .
  • the sections 15 ⁇ of the reinforcing bars 14 are also embedded in this concrete wall, so that the tensile forces acting between the concrete walls 11 and 12 can be transmitted via the connecting reinforcement formed by the reinforcing steels 14.
  • the storage element after the completion of the Concrete wall 12 also completely embedded in the concrete. Any moisture that later penetrates into the joints 19 between the concrete walls 11 and 12 leads to a swelling of the coating 10 and thus to a sealing of these joints.
  • the ribs 17 of the reinforcing bars 14 are formed such that these ribs 17 form an angle ⁇ with the longitudinal extension of the respective reinforcing bar 14, which angle is less than 45 °, preferably in the range between 30 and 45 °.
  • the reinforcing bars 14 can be produced as microalloyed, heat-treated or cold-formed steels.
  • the reinforcing bars are made of a steel alloy that contains less than 0.24 percent by weight carbon, preferably 0.16-0.22 percent by weight carbon, less than 1.5 percent by weight manganese, preferably 0.8-1.2 percent by weight Manganese and also contains vanadium, the proportion of vanadium being less than 0.12 percent by weight, preferably 0.03-0.08 percent by weight.
  • the reinforcement bars are made of a steel alloy that contains 0.12-0.22 percent by weight carbon, 0.5-1.0 percent by weight manganese, less than 0.05 percent by weight phosphorus, contains less than 0.05 weight percent sulfur, less than 0.6 weight percent copper, less than 0.05 weight percent tin, and less than 0.018 weight percent nitrogen.
  • the reinforcement bars 14 are made of a steel alloy that contains 0.06-0.20 percent by weight carbon, preferably 0.08-0.114 Weight percent carbon, 0.35-0.85 weight percent manganese, less than 0.6 weight percent copper and less than 0.5 weight percent silicon.
  • Fig. 6 shows a length of a reinforcing steel 14 ', as used for the manufacture of the reinforcing bars 14.
  • This reinforcing steel 14 ' is made so that it has areas 21 in the longitudinal or running direction, on which to achieve the necessary integration of the reinforcing bars 14 and in particular also the sections 15 ⁇ in the concrete (even with a relatively short length for the sections 15th ⁇ ) the ribs 17 are provided in close succession, each area 21 being followed by an area 22 which is kept clear of the ribs 17.
  • the bending or transition regions 15 ′′′ there are each formed by such a region 22.
  • each of which has at least two merging or adjoining sections on its working or molding surface, one section of which corresponds to the ribs 17 or these forming depressions and so that the area 21 provided with the ribs 17 forms while the other Section of each mold does not have these ribs 17 forming depressions and thus forms the areas 22 of the reinforcing steel 14 '.
  • the molds used can also be produced in a particularly simple manner and with a long service life with regard to their shaping or working surfaces, for example by introducing the the ribs 17 producing recesses by spark erosion in the respective section of the forming or working area used to form the areas 21.
  • the reinforcing steel 14 ' is, for example, drawn off from a winding or a coil, and then subsequently separated from the front end of this reinforcing steel 14' in the pulling direction, a predetermined partial length, which is then bent into a reinforcing bar 14.
  • the length of the areas 21 provided with the ribs 17 is selected and the separation of the later reinforcing bars 14 forming partial lengths from the reinforcing steel 14 'and also the bending of these partial lengths into the individual reinforcing bars 14' in such a way that not only the bending or transition areas 15 ′′′ between sections 15 'and 15 ⁇ , but also the bending and transition areas 15 ⁇ ⁇ between each section 15' and 16 are formed by an area 22 without ribs 17.
  • the lengths of the areas 21 and 22 of the reinforcing steel 14 ' are selected such that after the reinforcement bars 14 have been produced, these also have sections 22', 15 'and / or 16 with areas 21 alternating with areas 21 have, but here again in any case the bending and transition areas 15 ′′′ are formed by areas 22.
  • the partial lengths are separated from the reinforcing steel 14 'in the middle of either an area 21 or an area 22, but each separated partial length has at least two areas 22 at a mutual distance, which is essentially the Sum of the lengths of two sections 15 'and a section 16 corresponds.
  • the reinforcing bars 14a corresponding in shape to the reinforcing bars 14 are produced by bending from a reinforcing steel, which likewise has one of the alloys described above, but has no ribs 17 on its surface.
  • a plurality of rings 23, each forming a rib-like projection are applied to the sections 15 ⁇ .
  • These rings are either clamping rings or clamping sleeves, i.e. rings or sleeves, which are held by a snug fit on the sections 15 ⁇ , or the rings 23 or corresponding sleeves are there after being pushed onto the respective section 15 ⁇ by welding or in another suitable manner held.
  • FIG. 8 shows an embodiment in which the reinforcing bars 14b, which in their shape correspond to the reinforcing bars 14, are made of a reinforcing steel with one of the aforementioned alloys, which (reinforcing steel) also does not have the ribs 17.
  • the material forming the reinforcing bars 14b is compressed at the free ends of the sections 15 ⁇ in such a way that a thickened head 24 results at each of these ends.
  • the measures described allow fatigue strengths of 230 N / mm2 and greater to be achieved with the bent-back reinforcing bars, ie
  • the bent-up reinforcement bars can be stressed with a fatigue strength of at least 180 N / mm2 (also taking into account the necessary additional security), while the maximum permissible fatigue strength is only at approx 60 N / mm2.
  • FIGS. 9-12 described below relate to further embodiments of a reinforcement connection produced using the reinforcing steel according to the invention, which (embodiments) also have the advantages described above with regard to the increased fatigue strength.
  • the reinforcement bars there, designated 14c have a flat or oval cross section at least in the transition or back-bending areas 15 ′′′ and are bent about an axis running parallel to the larger cross-sectional axis 26. Otherwise, the reinforcement bars 14c are also provided with the ribs 17 of FIGS. 2 and 6 or with another ribbing or profiling that is customary or usable in the case of reinforcement bars, this ribbing or profiling on the transition regions 15 ′′′ and possibly also on the transition regions 15 ⁇ ⁇ is interrupted.
  • the reinforcing bars 14c are designed at least at the transition regions 15 ′′′ such that they have ribs 17a or a corresponding profile only where the cross-sectional axis 26 intersects the circumferential surface of the respective reinforcing bar 14c, while the rest Part of the peripheral surface is kept free from ribbing or profiling.
  • FIGS. 11 and 12 finally show an embodiment in which the reinforcing bars 14d there have ribs 17, which form a total of three rows of ribs 17 running in the longitudinal direction of the respective reinforcing bar 14d, which (rows) are offset by 120 ° on the circumference of the reinforcing bar 14d are provided.
  • the ribs 17 of the lower row of ribs in FIGS. 11 and 12 and thus outside with respect to the bending of the reinforcing bar 14d are not formed, i.e. this row of ribs is interrupted at least at the respective transition area 15 ′′′, so that the reinforcing bars 14d have an essentially smooth peripheral surface there.
  • the respective reinforcing bar 14d it is of course also possible for the respective reinforcing bar 14d to have a number of rows of ribs which differs from the number three. So it is possible, for example, that the ribs 17 are arranged in two rows of ribs, with these designs at least at the transition area chen 15 ′′′ the ribs 17 on the row of ribs or on the rows of ribs which, based on the bend there, are outside or outside are omitted.
  • FIG. 13 shows a reinforcement connection which differs from the reinforcement connection according to FIG. differs in that the storage element 1 a has a narrower width than the storage element 1.
  • the reinforcement bars 14e are not bow-shaped, but are formed by an angled length of the reinforcing steel, each with a section 15 ', a section 15 ⁇ and with the transition region 15 ′′′.
  • the reinforcing steel used for the production of the reinforcing bars 15e has the areas provided for the transition areas 15 ′′′, for example the areas 22 at evenly recurring intervals.
  • the reinforcement connection or its reinforcement bars 14e can then be produced in a particularly simple and rational manner with different lengths of the sections 15 'and thus adapted to different wall thicknesses of the concrete component 11 by separating corresponding lengths from the reinforcing steel, which are between their ends have at least one area provided for the transition area 15 ′′′ (for example area 22), the sections 15 'then being able to be infinitely adjusted to the desired length by appropriately bending the ends 27.
  • the reinforcing steel it is possible to compensate for the missing or reduced ribbing or profiling, in particular at the transition regions 15 15, by increasing the ribbing or deepening of the profiling on the other regions of the reinforcing bars 14, 14a-14e.
  • the reinforcing steel it is also possible for the reinforcing steel to have a cross-section which has cross-sectional dimensions of different sizes in two perpendicular axial directions. The larger cross-sectional dimension or axis then corresponds to the axis 26 of FIG. 10 and then runs parallel to the bending axis of the transition regions 15 ′′′, so that the smaller cross-sectional axis is perpendicular to this bending axis.
  • Such a cross section would be an oval or rectangular cross section, for example.
  • the cross-sectional design has the advantage that, despite a relatively large effective cross-section, the reinforcing bars 14, 14a-14e can be bent back slightly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP89101445A 1988-01-29 1989-01-27 Barre d'armature de béton en acier, repliable Expired - Lifetime EP0326157B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89101445T ATE98322T1 (de) 1988-01-29 1989-01-27 Rueckbiegefaehiger betonstahl.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DE3802696 1988-01-29
DE3802696 1988-01-29
DE3806706 1988-03-02
DE3806706 1988-03-02
DE3816150 1988-05-09
DE3816150 1988-05-11
DE3816930 1988-05-17
DE3816930A DE3816930A1 (de) 1988-05-11 1988-05-18 Rueckbiegefaehiger betonstahl

Publications (3)

Publication Number Publication Date
EP0326157A2 true EP0326157A2 (fr) 1989-08-02
EP0326157A3 EP0326157A3 (en) 1989-09-20
EP0326157B1 EP0326157B1 (fr) 1993-12-08

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EP89101445A Expired - Lifetime EP0326157B1 (fr) 1988-01-29 1989-01-27 Barre d'armature de béton en acier, repliable

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EP (1) EP0326157B1 (fr)
DE (1) DE58906325D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028534A1 (fr) * 1994-04-13 1995-10-26 Zellner, Wilhelm Bande a goujons pour barres relevees
WO2009017337A1 (fr) * 2007-07-27 2009-02-05 Yan Sup Lee Barre de renfort, dispositif d'accouplement de la barre de renfort, ainsi qu'assemblage et procédé de liaison associé
EP2476822A1 (fr) * 2011-01-13 2012-07-18 Quest Armatures Elément de rupteur thermique destiné à être implanté à la jonction entre un mur de refend et un voile de façade d'une construction en béton armée

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR420102A (fr) * 1910-09-06 1911-01-23 Giovanni Antonio Porcheddu Type spécial perfectionné de fers et son application dans les constructions en béton armé
US2137718A (en) * 1935-05-17 1938-11-22 Laclede Steel Company Method of making embedded bars
DE1077854B (de) * 1955-08-02 1960-03-17 Hermann Donath Bewehrungsstab fuer Beton, insbesondere fuer Spannbeton
FR1358698A (fr) * 1963-04-06 1964-04-17 Avi Alpenlaendische Vered élément d'armature et procédé pour le fabriquer
GB960685A (en) * 1960-01-26 1964-06-17 Dividag Stressed Concrete Ltd Improvements in or relating to reinforced concrete
DE1267406B (de) * 1956-02-13 1968-05-02 Dyckerhoff & Widmann Ag Bewehrungsstab fuer Spannbeton
EP0098825A1 (fr) * 1982-07-01 1984-01-18 Eurosteel S.A. Fibres de renforcement de matériaux moulables à liant hydraulique ou non et leur fabrication
EP0203434A2 (fr) * 1985-05-23 1986-12-03 Pantex-Stahl AG Fer d'armature en particulier pour béton projeté

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR420102A (fr) * 1910-09-06 1911-01-23 Giovanni Antonio Porcheddu Type spécial perfectionné de fers et son application dans les constructions en béton armé
US2137718A (en) * 1935-05-17 1938-11-22 Laclede Steel Company Method of making embedded bars
DE1077854B (de) * 1955-08-02 1960-03-17 Hermann Donath Bewehrungsstab fuer Beton, insbesondere fuer Spannbeton
DE1267406B (de) * 1956-02-13 1968-05-02 Dyckerhoff & Widmann Ag Bewehrungsstab fuer Spannbeton
GB960685A (en) * 1960-01-26 1964-06-17 Dividag Stressed Concrete Ltd Improvements in or relating to reinforced concrete
FR1358698A (fr) * 1963-04-06 1964-04-17 Avi Alpenlaendische Vered élément d'armature et procédé pour le fabriquer
EP0098825A1 (fr) * 1982-07-01 1984-01-18 Eurosteel S.A. Fibres de renforcement de matériaux moulables à liant hydraulique ou non et leur fabrication
EP0203434A2 (fr) * 1985-05-23 1986-12-03 Pantex-Stahl AG Fer d'armature en particulier pour béton projeté

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Sonderabdruck aus "Stahl und Eisen", Band 77, Heft 1, 1957, Seiten 11-15; Verlag Stahleisen, Duesseldorf, DE, W. LUECKERATH: "Rissanfaelligkeit quergerippter Betonstaehle", *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995028534A1 (fr) * 1994-04-13 1995-10-26 Zellner, Wilhelm Bande a goujons pour barres relevees
WO2009017337A1 (fr) * 2007-07-27 2009-02-05 Yan Sup Lee Barre de renfort, dispositif d'accouplement de la barre de renfort, ainsi qu'assemblage et procédé de liaison associé
EP2476822A1 (fr) * 2011-01-13 2012-07-18 Quest Armatures Elément de rupteur thermique destiné à être implanté à la jonction entre un mur de refend et un voile de façade d'une construction en béton armée
FR2970489A1 (fr) * 2011-01-13 2012-07-20 Ouest Armatures Element de rupteur thermique destine a etre implante a la jonction entre un mur de refend et un voile de facade d'une construction en beton armee

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Publication number Publication date
DE58906325D1 (de) 1994-01-20
EP0326157A3 (en) 1989-09-20
EP0326157B1 (fr) 1993-12-08

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