EP1754843A1 - Élément de construction pour armature de cisaillement - Google Patents

Élément de construction pour armature de cisaillement Download PDF

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Publication number
EP1754843A1
EP1754843A1 EP06012141A EP06012141A EP1754843A1 EP 1754843 A1 EP1754843 A1 EP 1754843A1 EP 06012141 A EP06012141 A EP 06012141A EP 06012141 A EP06012141 A EP 06012141A EP 1754843 A1 EP1754843 A1 EP 1754843A1
Authority
EP
European Patent Office
Prior art keywords
shear reinforcement
head bolts
component according
shaped
bolt heads
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.)
Withdrawn
Application number
EP06012141A
Other languages
German (de)
English (en)
Inventor
Nikolaus Wild
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.)
Schoeck Bauteile GmbH
Original Assignee
Schoeck Bauteile GmbH
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 Schoeck Bauteile GmbH filed Critical Schoeck Bauteile GmbH
Publication of EP1754843A1 publication Critical patent/EP1754843A1/fr
Withdrawn legal-status Critical Current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
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

Definitions

  • the invention relates to a structural element for shear reinforcement of concrete components, consisting of a plurality of shear reinforcement stirrups.
  • Shear reinforcement braces also referred to as shear allowances, are used in concrete components such as slabs, beams, girders, and the like to accommodate shear forces, and are most often used to provide additional bending or bending tensile reinforcement.
  • Conventional shear reinforcement brackets are O- or U-shaped and often grouped into shear reinforcement baskets and consist of a wire or rod material whose ends are either - in the O-shape - fixed to each other or its ends - in the U-shape - Are bent inwards at the end of the U-legs to make a positive connection with the concrete.
  • the present invention is based on the object, a component for shear reinforcement with said shear reinforcement braces in such a way that reinforced with him concrete components are puncture resistant, so as to protect nuclear power plants, nuclear bearings, etc. against large forces from outside and against aircraft crashes.
  • shear reinforcement components it has been found that the shear reinforcement stirrups used there are either not sufficiently stable because their terminal deflections are bent back under extreme force effects or the positive connection is canceled; or the shear reinforcement stirrups are in the mentioned O-shape fixed to each other (for example, by welding), whereby but the additional component reinforcement, so for example, bending or longitudinal reinforcement or not very cumbersome together with the shear reinforcement stirrups can be used in the component to be reinforced.
  • the device for use as a breakdown protection for concrete components such as outer walls of nuclear power plants, etc. consist of double-headed bolts, and that the double-head bolts are U-shaped and have terminal bolt heads.
  • the terminal bolt heads provide the necessary form-fitting connection between the shear reinforcement element and the concrete, so that the shear reinforcement stirrups formed in this way can not give up the positive engagement with the surrounding concrete, in particular with dynamic force from outside, and thus can act as a safety catch.
  • the U-shaped head bolts are mainly installed in a vertical plane with two mutually parallel, in particular vertical legs and a vertical, in particular horizontal base, which connects the two legs.
  • the force to be absorbed in training as a breakdown fuse usually takes place from above parallel to the two legs, the base forms the largest force application zone.
  • the horizontal base further in the direction of the legs, ie in particular to press down, the two legs of this vertical movement along its extension direction can not oppose too great resistance, but so ensure the two terminal bolt heads due to their opposite to the legs extreme cross-sectional widening for the necessary positive engagement and thus keep the entire shear reinforcement bar in position.
  • terminal bolt heads are formed frusto-conical and welded to the legs, for example, attached via a socket connection, formed by a compression process or the like.
  • the U-shaped head bolts may consist of several rod-shaped items which are fixed to each other in particular by a welded joint, for example, single head bolts with only one end bolt head form the essential parts of the U-legs and an additional rod element is bent in a U-shape and in Essentially contains the U base.
  • the terminal bolt heads of the U-shaped head bolts have a perpendicular to the axis of the head bolt extending end face, wherein the two end faces of the two bolt heads of a U-shaped head bolt lie in a common plane.
  • the U-shaped head bolts have a load-facing side, so in particular an upwardly open U-shape, so that the component reinforcement easily, in particular inserted from above into the U-shape and can be arranged on the respective predetermined height positions, which would not be possible with a shear reinforcement bow with a closed shape or with a shear reinforcement bow with downwardly open U-shape.
  • a shear reinforcement bow with a closed shape or with a shear reinforcement bow with downwardly open U-shape is the closed base of the U-bracket on the load side facing away, thus ensuring the necessary stability of the shear reinforcement, which is supported by the two connected head bolts and their anchoring in the load-facing zone.
  • a plurality of shear reinforcement stirrups are fixed to each other via a common connecting element so as to simplify installation in the concrete component.
  • shear reinforcement stirrups can be set up via spacers on the lower component shuttering. This leaves Install the component for shear reinforcement in the required height position and in particular with the prescribed minimum concrete cover.
  • FIG. 1 shows a vertical section through an inventive element for shear reinforcement 1 in Figure 1.
  • This element for shear reinforcement has in the case shown a shear reinforcement bracket 2 as an essential component and is installed in a concrete component 3 (for example, in a beam-shaped concrete beam).
  • the shear reinforcement bow consists of a head pin 2, which is bent in a U-shape and has two U-legs 4, 5 and a U-base 6 and two terminal bolt heads 7, 8.
  • the U-legs 4, 5 are formed of cylindrical rod material with ribs 9 on its outside to improve the positive connection with the surrounding concrete 3 and are connected via the common U-base 6, which consists of the same material and in the horizontal direction of the lower ends of the U-legs runs.
  • FIG. 1 shows, in addition to the shear reinforcement component, a further longitudinal reinforcement 10 consisting of metal rods running parallel to one another in the horizontal direction at different height levels. It is readily apparent that the upwardly open U-shape allows subsequent insertion of these longitudinal reinforcement rods 10, which would not be the case with a shear reinforcement stirrup with downwardly open U-shape or a circumferential closed shear reinforcement stirrup.
  • the externally applied force in direction A is indicated in FIG. 1, which must be intercepted by the shear reinforcement element according to the invention, the terminal bolt heads 7, 8 due to their larger cross section than the adjoining U-limbs 4 , 5 for the necessary form fit and thus for provide the necessary fixation of the component to the shear reinforcement in the concrete component.
  • the present invention offers the advantage of providing by simple means a shear reinforcement element which on the one hand can function as a breakdown protection and on the other hand does not hinder the installation of additional structural reinforcement.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP06012141A 2005-08-18 2006-06-13 Élément de construction pour armature de cisaillement Withdrawn EP1754843A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20513048 2005-08-18

Publications (1)

Publication Number Publication Date
EP1754843A1 true EP1754843A1 (fr) 2007-02-21

Family

ID=37232947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06012141A Withdrawn EP1754843A1 (fr) 2005-08-18 2006-06-13 Élément de construction pour armature de cisaillement

Country Status (1)

Country Link
EP (1) EP1754843A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2851479A3 (fr) * 2013-02-12 2015-06-03 Ancotech Ag Système de renforcement contre le poinconnement avec des tiges ou des barres transversales ayant des têtes d'ancrage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0495334A1 (fr) * 1991-01-18 1992-07-22 Thomas Mösch Armature de cisaillement pour des plafonds plats
DE4409707A1 (de) * 1994-03-22 1995-09-28 Zellner Wilhelm Stütze aus Stahlbeton
DE4412598A1 (de) * 1994-04-13 1995-10-19 Zellner Wilhelm Dübelleiste für Schubbewehrungen
DE10028300A1 (de) * 2000-06-07 2001-12-13 Deha Ankersysteme Dübelleiste

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0495334A1 (fr) * 1991-01-18 1992-07-22 Thomas Mösch Armature de cisaillement pour des plafonds plats
DE4409707A1 (de) * 1994-03-22 1995-09-28 Zellner Wilhelm Stütze aus Stahlbeton
DE4412598A1 (de) * 1994-04-13 1995-10-19 Zellner Wilhelm Dübelleiste für Schubbewehrungen
DE10028300A1 (de) * 2000-06-07 2001-12-13 Deha Ankersysteme Dübelleiste

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2851479A3 (fr) * 2013-02-12 2015-06-03 Ancotech Ag Système de renforcement contre le poinconnement avec des tiges ou des barres transversales ayant des têtes d'ancrage

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