WO2012163708A1 - Système d'ancrage entre un élément en béton et un élément en acier - Google Patents

Système d'ancrage entre un élément en béton et un élément en acier Download PDF

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Publication number
WO2012163708A1
WO2012163708A1 PCT/EP2012/059349 EP2012059349W WO2012163708A1 WO 2012163708 A1 WO2012163708 A1 WO 2012163708A1 EP 2012059349 W EP2012059349 W EP 2012059349W WO 2012163708 A1 WO2012163708 A1 WO 2012163708A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel
anchoring system
concrete
anchor
component
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.)
Ceased
Application number
PCT/EP2012/059349
Other languages
German (de)
English (en)
Inventor
Christian KRUMB
Serge NABOISHIKOV
Marco Schippers
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.)
Areva GmbH
Original Assignee
Areva NP 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 Areva NP GmbH filed Critical Areva NP GmbH
Priority to KR1020137034611A priority Critical patent/KR20140043763A/ko
Priority to EP12729892.5A priority patent/EP2715005B1/fr
Priority to CA2837389A priority patent/CA2837389A1/fr
Priority to JP2014513117A priority patent/JP2014523982A/ja
Priority to CN201280027003.3A priority patent/CN103688003A/zh
Priority to BR112013030775A priority patent/BR112013030775A2/pt
Publication of WO2012163708A1 publication Critical patent/WO2012163708A1/fr
Priority to ZA2013/08246A priority patent/ZA201308246B/en
Priority to US14/095,145 priority patent/US20140083044A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E04C3/294—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete of concrete combined with a girder-like structure extending laterally outside the element
    • 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 [3D] extent, e.g. lattice girders
    • E04C5/065—Light-weight girders, e.g. with precast parts

Definitions

  • the invention relates to a Veran k réellessystem for forming a permanent connection between a concrete component and a steel component. It further relates to a steel-reinforced concrete structure made therewith.
  • the material concrete, and especially the variant reinforced concrete is versatile as a building material.
  • this building material is not used exclusively, but in combination with other building materials.
  • individual elements or entire assemblies of concrete or reinforced concrete and complementary elements or assemblies of a different material, such as steel, are usually produced.
  • the individual elements or modules must be connected to each other during assembly. This often involves so-called anchorages.
  • Austrian patent application AT 505 269 A1 discloses an anchoring system which has been specially designed for anchoring a concrete component to a steel beam, ie a steel component. Thereafter, a strip-shaped body of steel serves as anchoring element and has at least one recess on. With this recess, the anchoring element protrudes into the concrete component, and on the opposite side of the recess of the anchoring element this is welded to the steel beam.
  • the permissible maximum load of such anchoring is not sufficient for various applications.
  • the invention is therefore based on the object of developing a further improved and, moreover, more robust anchoring system, in particular for connecting a concrete component to a steel component.
  • An anchoring system serves to form a permanent connection between a concrete component and a steel component.
  • at least one anchoring element formed from an anchor strip is cast into the concrete component such that it projects at least partially out of the concrete component.
  • the exposed section acts as a connecting surface to the steel component and is firmly connected to this.
  • On the side of the connecting surface a number of recesses is provided on the anchor bar, which extend into the concrete component into it.
  • at least one steel strut braid is introduced as a reinforcement, wherein each recess is penetrated at the anchor bar of at least one steel strut of the braid.
  • each recess separates the connection surface into at least two spatially separated subregions.
  • each recess is incorporated as an easy-to-implement lateral recess in the anchor bar.
  • a loop formed in this way acts as a favored connection point or favored force transmission interface between the concrete component and the steel component.
  • a multiplicity of regularly arranged recesses in the manner of a row of teeth are provided. As a result, a very large number of favored connection points and a uniform distribution of the same can be realized. The transfer of forces acting on the steel component to the reinforcement and thus to the concrete component then takes place correspondingly uniformly.
  • each recess has the contour of a quadrangle or a symmetrical trapezoid.
  • profile strips with an L, T or I-shaped cross section are used as anchor strips.
  • such a cross-section requires a barb-like effect, ie an improved hold of an anchor bar in concrete, and on others it is thus possible to resort to commercially available standard profiled items for the production of the anchor bars.
  • I-, U-, double-T and Z-profile strips as starting products are suitable for the production of two anchor strips in one production process.
  • an anchoring system according to the invention is designed primarily to ensure the highest possible load limits, the anchor strips are preferably made of steel, in particular of ferritic or austenitic steel. In this context, it is therefore considered advantageous if each anchor bar materially connected to the corresponding steel component, in particular welded, is.
  • An anchoring system according to the invention is also suitable for the construction of a reactor containment vessel, a pressure vessel or a tank container due to its load capacity. According to a typical construction, these are constructed of reinforced and possibly prestressed concrete components that form the concrete shell. On the inside of this concrete jacket, a steel jacket, also referred to as a liner, of a number of steel components is provided, which ensures the tightness of the concrete jacket. With the help of anchoring according to the invention, the steel components are finally connected to the concrete components inextricably.
  • the design and construction of the anchoring of the steel containment jacket, also referred to as containment liner, of the reactor containment is of great importance.
  • high standards of anchorage are defined in various standards and guidelines.
  • the anchoring must be able to withstand the forces and stresses that occur during normal operation as well as in the event of a malfunction and at the same time prevent cracking / crack propagation in the steel jacket.
  • these requirements can be met more efficiently when the steel shell, the anchorage and the reinforced concrete work together in the depth of the anchorage.
  • the anchoring system according to the invention offers the highest degree of effectiveness in this respect.
  • the anchoring profiles are usually welded directly to the steel shell using continuous welds on both sides of the profile. Welding is usually done manually. The lengths of all In this case, weld seams add up to several kilometers in the case of a reactor containment. The manual welding work causes high costs.
  • the reinforcement layer can only be placed behind (below) the anchoring profiles. This reduces the maximum bending capacity of the reinforced concrete section.
  • the continuous anchoring profiles provide a physical barrier to the flow of concrete during the casting process between the individual profiles.
  • the anchoring system proposed here which can also be referred to as “liner shaped anchorage system”, provides a much better anchoring of the steel jacket (liner) by the specially shaped anchoring profiles provided with recesses for the reinforcement (anchor strips), which cooperate between the anchoring profiles and the reinforced concrete in the form of a true composite structure, balancing the anchoring system and increasing the efficiency of the anchoring, in particular offering the following advantages:
  • the anchoring system according to the invention allows placement of parts of the reinforcement in the space between the continuous inner webs of the anchoring profiles and thus connected to the outer joint surfaces steel shell, taking into account the minimum required concrete cover.
  • the system increases the flexural strength of the concrete cross section.
  • the recesses in the correspondingly shaped anchoring profiles prevent the formation of a continuous physical barrier obstructing the flow of concrete during the casting process.
  • the anchoring profiles used couple / integrate at least two layers of crossed reinforcement. This increases the anchoring capacity and allows to balance the capacity of the profiles and the reinforced concrete.
  • the anchoring system according to the invention with specially shaped anchoring profiles provides an efficient solution for embedding the profiles in the concrete together with an optimized interface to the reinforcement and at the same time great savings potential with regard to production costs and production times.
  • the use of this system increases the efficiency of anchoring the steel mantle. It can be used both for reactor and other containment containers and gas and liquid containers as well as for pressure vessels. Reference to an embodiment of the invention will be further described. Show it:
  • FIG. 1 is a fragmentary longitudinal section of a building, namely a reactor containment, with inventive anchoring system,
  • FIG. 2 is a profile or cross-sectional view of two commercial profile strips
  • FIG. 3 is a side view of a U-profile strip with indicated cutting line.
  • FIG. 1 shows the functional principle of an anchoring system according to the invention.
  • the longitudinal section shown in fragmentary form shows a concrete component 1, which is permanently connected by means of at least one anchor strip 2 to a steel component 3, also referred to as a liner sheet, designed in the manner of a flat steel plate.
  • a steel component 3 also referred to as a liner sheet, designed in the manner of a flat steel plate.
  • anchor strips 2 can be at a certain distance perpendicular to the plane behind each other, which does not appear from the figure.
  • a half of a steel profile strip is provided in this embodiment, which by dividing one of the in FIG. 2 and FIG. 3 standard commercial profiles 4, 5 can be produced.
  • This is preferably chosen so that as a result along both halves of a kind of row of teeth is formed by recesses or spaces separated teeth.
  • the shape of a symmetrical trapezoid was chosen as an example.
  • Both anchor strips 2 can be considered substantially equivalent. They differ only by a displacement of the row of teeth in the longitudinal direction of the groin 6.
  • 5 can be used any suitable separation method, such. Cutting, shearing, punching and related processes such as laser cutting.
  • each anchor strip 2 has a strip-like and preferably plane-of-teeth and recesses formed from the corresponding upper or lower flange of the standard profile, i. Perpendicular to the plane of projection outwardly projecting support leg 8, which rests in the final assembly state of the anchoring system in the concrete component 1 and therefore acts more or less as a barb.
  • the recesses in the transverse direction 11 are not completely guided up to the retaining foot 8, but instead there remains a narrow web 13 connected to the retaining foot.
  • a braid of steel struts 10 is incorporated as a reinforcement.
  • the mesh has several layers, which are stacked in an alternating sequence ABAB in the transverse direction 1 1 one above the other. In FIG. 1 are shown exactly four layers. However, a different, especially larger number of layers may also be advantageous.
  • the steel struts 10 assigned to a layer A are arranged parallel to one another and parallel to the longitudinal direction 6 of the anchor strip 2 and perpendicular to the steel struts 10 of a layer B which run perpendicular to the plane of the drawing.
  • the steel struts 10 are preferably connected to each other.
  • the type of connection can vary depending on the application. Particularly expedient variants are gluing, welding or wrapping with wire.
  • the steel struts 10 of two directly superimposed layers AB can also be intertwined by, for example, the perpendicular to the plane extending steel struts 10 are alternately passed above and below them immediately adjacent and extending in the longitudinal direction 6 steel struts 10.
  • each interdental space of an anchor bar 2 is formed into a kind of eyelet 12.
  • a steel strut 10 of the steel braid mesh passes through such eyelet 12, so that at this point a power transmission according to the objective is possible.
  • the interdental spaces passing steel struts 10 are respectively on the inner web 13 of the anchor bar 2.
  • Each interdental space can also be penetrated by more than one steel strut 10, or exceptionally by none, provided that at least some interstices of the anchor bar 2 are interspersed accordingly by steel struts 10. For example, if tensile forces in the transverse direction 1 1 act on the respective anchor bar 2, it is not only held in the concrete via its retaining foot 8, but is additionally anchored over the upper two layers of the steel braid.
  • the steel struts braid four layers of crossed and possibly partially intertwined steel struts 10, wherein the steel struts 10 are seen in the direction of penetration into the concrete component 1 lowest position perpendicular to the plane and under the retaining leg 8 of the anchor bar 2, parallel to the further above the interdental spaces interspersed steel struts 10 are passed over.
  • Some of the longitudinally extending to the anchor bar 2 steel struts 10 of the next higher layer can be arranged such that they are supported from above on the support foot 8 and thus do not touch the perpendicular thereto steel struts 10 of the lowermost layer directly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

Système d'ancrage permettant de créer une liaison non libérable entre un élément en béton (1) qui présente une armature comportant au moins un treillis de barres d'acier, et un élément en acier (3), au moins un élément d'ancrage formé d'une barre d'ancrage (2) étant coulé dans l'élément en béton (1) de telle manière qu'au moins une surface de liaison sorte au moins partiellement de l'élément en béton (1). L'invention vise à améliorer la capacité de charge de l'ancrage. A cet effet, la barre d'ancrage (2) présente un certain nombre de creux qui s'étendent au moins partiellement dans l'élément en béton (1) et qui sont chacun traversés par au moins une barre d'acier (10) du treillis de barres d'acier.
PCT/EP2012/059349 2011-06-03 2012-05-21 Système d'ancrage entre un élément en béton et un élément en acier Ceased WO2012163708A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
KR1020137034611A KR20140043763A (ko) 2011-06-03 2012-05-21 콘크리트 부품과 강 부품 간 앵커링 시스템
EP12729892.5A EP2715005B1 (fr) 2011-06-03 2012-05-21 Structure de contruction entre un élément en béton et un élément en acier
CA2837389A CA2837389A1 (fr) 2011-06-03 2012-05-21 Systeme d'ancrage entre un element en beton et un element en acier
JP2014513117A JP2014523982A (ja) 2011-06-03 2012-05-21 コンクリート部材と鋼部材との間の定着装置
CN201280027003.3A CN103688003A (zh) 2011-06-03 2012-05-21 混凝土构件和钢构件之间的锚固系统
BR112013030775A BR112013030775A2 (pt) 2011-06-03 2012-05-21 sistema de ancoragem entre um componente de concreto e um componente de aço
ZA2013/08246A ZA201308246B (en) 2011-06-03 2013-11-04 Anchoring system between a concrete component and a steel component
US14/095,145 US20140083044A1 (en) 2011-06-03 2013-12-03 Anchoring system between a concrete component and a steel component

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011105329A DE102011105329B4 (de) 2011-06-03 2011-06-03 Verbundbauteil und damit hergestellte Stahlbeton-Stahl-Struktur
DE102011105329.1 2011-06-03

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/095,145 Continuation US20140083044A1 (en) 2011-06-03 2013-12-03 Anchoring system between a concrete component and a steel component

Publications (1)

Publication Number Publication Date
WO2012163708A1 true WO2012163708A1 (fr) 2012-12-06

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ID=46384314

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059349 Ceased WO2012163708A1 (fr) 2011-06-03 2012-05-21 Système d'ancrage entre un élément en béton et un élément en acier

Country Status (10)

Country Link
US (1) US20140083044A1 (fr)
EP (1) EP2715005B1 (fr)
JP (1) JP2014523982A (fr)
KR (1) KR20140043763A (fr)
CN (1) CN103688003A (fr)
BR (1) BR112013030775A2 (fr)
CA (1) CA2837389A1 (fr)
DE (1) DE102011105329B4 (fr)
WO (1) WO2012163708A1 (fr)
ZA (1) ZA201308246B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
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CN105952059A (zh) * 2016-07-05 2016-09-21 北京交通大学 一种替代高强钢筋弯钩的钢筋锚固方法
CN107170488A (zh) * 2017-05-24 2017-09-15 四川行之智汇知识产权运营有限公司 一种混凝土安全壳的待浇筑骨架
CN107170489A (zh) * 2017-05-24 2017-09-15 四川行之智汇知识产权运营有限公司 反应堆混凝土安全壳的预应力管道排布结构

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KR102003670B1 (ko) * 2018-08-03 2019-07-25 한국건설기술연구원 텍스타일 그리드 고정장치를 이용한 텍스타일 보강 콘크리트 구조물 및 그 시공방법

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JP2014523982A (ja) 2014-09-18
DE102011105329A1 (de) 2012-12-06
KR20140043763A (ko) 2014-04-10
CN103688003A (zh) 2014-03-26
CA2837389A1 (fr) 2012-12-06
EP2715005B1 (fr) 2015-01-07
BR112013030775A2 (pt) 2016-12-06
DE102011105329B4 (de) 2013-06-27

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