EP0356922B1 - Einbetonierter Abstandhalter - Google Patents

Einbetonierter Abstandhalter Download PDF

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Publication number
EP0356922B1
EP0356922B1 EP89115679A EP89115679A EP0356922B1 EP 0356922 B1 EP0356922 B1 EP 0356922B1 EP 89115679 A EP89115679 A EP 89115679A EP 89115679 A EP89115679 A EP 89115679A EP 0356922 B1 EP0356922 B1 EP 0356922B1
Authority
EP
European Patent Office
Prior art keywords
wire
concrete
spacer
base body
reinforcement
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 - Lifetime
Application number
EP89115679A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0356922A1 (de
Inventor
Siegfried Dreizler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP94102506A priority Critical patent/EP0606107A1/de
Publication of EP0356922A1 publication Critical patent/EP0356922A1/de
Application granted granted Critical
Publication of EP0356922B1 publication Critical patent/EP0356922B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00Methods or machines specially adapted for the production of tubular articles
    • B28B21/56Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022Means for inserting reinforcing members into the mould or for supporting them in the mould
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/168Spacers connecting parts for reinforcements and spacing the reinforcements from the form
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • E04C5/201Spacer blocks with embedded separate holding wire or clips

Definitions

  • the invention relates to a castable spacer for the wire reinforcement in the walls of cast concrete pipes, with a base body made of polymer concrete, the base body being provided on a first side with a spacer element which extends in the radial direction of a concrete tube to be produced, the Base body on a second side, which is radially opposite the first side, has a groove for receiving an axially extending wire of the wire reinforcement.
  • the known spacer for heavy reinforcements is suitable for absorbing strong compressive forces that act perpendicular to the plane of the wire reinforcement.
  • the level of the wire reinforcement is formed by the crossing reinforcing bars.
  • the fastening element is anchored in a projection of the base body, which comes to rest next to the groove in which a first Wire of the wire reinforcement is receivable.
  • the fastening element anchored in the projection formed as a material-thick section of the base body is bent in such a way that it extends in a plane which is approximately perpendicular to a plane which runs through the longitudinal axis of the groove.
  • the fastening element is bent in such a way that, after it has been clipped onto the wire reinforcement, it comes to rest at certain points on the first wire received in the groove.
  • a second wire of the wire reinforcement which crosses the first wire received in the groove approximately vertically, serves as a stop or support surface for the single fastening element.
  • a spacer is known from document US-A-4 741 143 which serves to hold a reinforcement cage in a cylindrical hole at a distance from the walls thereof, the hole being completely poured out to form a solid column.
  • fastening elements protrude in the form of protruding thin wires which have to be wound around the wire reinforcement in order to make the connection.
  • the side of the spacer opposite the fastening elements is provided with an axially extending inclined surface for sliding on.
  • the object of the present invention is to provide a spacer which is easy to handle, which allows the wire reinforcement to slide smoothly in the axial direction relative to the shape, and which can absorb not only radially directed forces but also circumferentially directed forces in such a way that a the spacer is firmly attached to the reinforcement.
  • the object is achieved in that on the second side of the base body at least two radially projecting fastening elements are provided, which are arranged on both sides of the groove, that the fastening elements are designed to be resilient so that they can be clipped onto a peripheral wire of the wire reinforcement , and that the spacer element merges into an approximately axially extending inclined surface for the shape to slide on.
  • the spacer By providing at least two fastening elements which protrude radially from the base body and are arranged on both sides of the groove and which surround the peripheral wire, which runs approximately perpendicular to the wire received in the groove, at two spaced apart locations, the spacer lies in the region of an intersection of the Reinforcement bars on all four areas of the wires of the wire reinforcement, which extend away from the crossing point, immovably.
  • the two fastening elements are designed so that they can be clipped onto the peripheral wire of the wire reinforcement, they hold the spacer sufficiently firmly, so that it cannot be moved in the longitudinal direction of the axially extending wire. A displacement in the longitudinal direction of the peripheral wire is not possible because the axially extending wire is received in the groove of the spacer.
  • the spacer element has the shape of a circular section, the center of the circle coinciding approximately with a fastening element which engages on a peripheral section of the wire reinforcement.
  • the vertex of the circle represents the most distant point from the attachment point of the spacer to the reinforcement cage. At the vertex, the spacer is in contact with the shape. If there is a movement in the circumferential direction relatively between the spacer and the shape adjacent to the apex of the curvature, then the force or the tilting moment is greatest via the leverage, so that this tilting moment is then due to the advantageous arrangement of the fastening element at the level of the center point best can be resisted.
  • the form shown in Figure 1 for casting concrete pipes of relatively large dimensions, for example with a length of 3 m and a diameter of 1.20 m, comprises an inner core 1, which from a circular base plate 2 upwards according to the length of the concrete pipe to be cast protrudes.
  • the inner core 1 is surrounded by an inner wire reinforcement 3 and at a distance from it by an outer wire reinforcement 4.
  • the wire reinforcements 3, 4 comprise vertically extending metal rods 5, which also essentially correspond to the length of the concrete pipe to be manufactured and which are supported on the base plate 2.
  • Essentially circular, peripheral sections 6, also made of metal, are connected to the metal bars 5, for example by welding.
  • the sections 6 usually run along the vertical rods 5 in a spiral.
  • the inner and outer wire reinforcements 3, 4 thus each form self-supporting cages, which can optionally also be connected to one another.
  • Spacers 7, 8 on the wire reinforcements 3, 4 hold them at a precisely defined distance concentrically to the central axis of the inner core 1, the spacers 7 connected to the inner wire reinforcement resting on the outer circumferential surface of the inner core 1, and the spacers 8 connected to the outer wire reinforcement come into contact with an outer form 9, which is pushed onto the inner core provided with the wire reinforcements 3, 4 in the direction of arrow B after the wire reinforcements 3, 4 equipped with the spacers 7, 8 have been arranged around the inner core 1.
  • the spacers 7 slide along its outer circumferential surface and ensure the exact centering of the inner wire reinforcement.
  • the inner wall of the outer mold 9 slides along the spacer 8 when applied to the inner core 1 and in this way centers the outer wire reinforcement 4.
  • the inner core 1 with the base plate 2 supporting the outer mold 9 is preferably on a vibrating table, so that the filled concrete can be compacted in the desired manner.
  • FIGS 3 and 4 show the structure and operation of the spacer 8 in detail.
  • the spacer 8 arranged on the outer wire reinforcement 4 comprises a base body 16 made of polymer concrete.
  • Polymer concrete is a material that consists of a mixture of plastic, sand and cement, the coefficient of thermal expansion of which is essentially the same as that of the concrete.
  • From one side of this body 16 two wire parts 17 protrude at the top, which encompass the associated, peripheral section 6 of the wire reinforcement from above.
  • a rib 19 with inclined surfaces 21 protrudes from the base body 16 on the side opposite the wire parts 17.
  • peripheral sections 6 of the wire reinforcements 3, 4 are each arranged on the side of the vertically extending metal rods 5 facing the inner core 1. In this way, the wall from which the wire parts 17 of the spacer 8 protrude bears against peripherally running sections 6 of the wire reinforcement 4, while the spacer 8 with its groove 18 abuts a vertically running rod 5.
  • the spacers 7, 8 are so stable and so firmly connected to the wire reinforcements 3, 4 that they do not shift or deform when the reinforcements move relative to the parts 1 and 9 of the mold, so that in any case an exact centering of the Reinforcements 3, 4 in the concrete ring space to be filled is guaranteed.
  • the apex heights of the projecting ribs 19 determine the respective distance of the wire reinforcements 3, 4 from the inner core 1 or the outer shape 9.
  • the fastening elements serving to connect the wire reinforcements 3, 4 can also be connected in one piece to the base body 16, i.e. also consist of polymer concrete and the spacers 7, 8 are formed with the casting or spraying.
  • the spacers 7, 8 are formed with the casting or spraying.
  • corresponding projections made of polymer concrete can be formed on the base body 16 at the level of the wire parts 17 and surround the parts of the wire reinforcements 3, 4 in the same way as the wire parts 17.
  • the concrete pipe described in connection with FIGS. 1 and 2 is a pipe with a self-contained wall.
  • the spacers described can be used in the same way, however, for those concrete pipes known per se which have an axially parallel slot in their wall.
  • Such "slotted pipes” are used, for example, on the edge of highways as water drainage pipes, water flowing off the street entering the pipe inside via the slit.
  • the fastening elements (wire parts 17) are arranged in the upper region of the spacer 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP89115679A 1988-08-27 1989-08-25 Einbetonierter Abstandhalter Expired - Lifetime EP0356922B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94102506A EP0606107A1 (de) 1988-08-27 1989-08-25 Einbetonierter Abstandhalter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3829084 1988-08-27
DE3829084A DE3829084A1 (de) 1988-08-27 1988-08-27 Einbetonierbarer abstandhalter

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP94102506.6 Division-Into 1989-08-25

Publications (2)

Publication Number Publication Date
EP0356922A1 EP0356922A1 (de) 1990-03-07
EP0356922B1 true EP0356922B1 (de) 1994-10-26

Family

ID=6361697

Family Applications (3)

Application Number Title Priority Date Filing Date
EP89115679A Expired - Lifetime EP0356922B1 (de) 1988-08-27 1989-08-25 Einbetonierter Abstandhalter
EP89910099A Pending EP0431055A1 (de) 1988-08-27 1989-08-25 Einbetonierbarer abstandhalter
EP94102506A Withdrawn EP0606107A1 (de) 1988-08-27 1989-08-25 Einbetonierter Abstandhalter

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP89910099A Pending EP0431055A1 (de) 1988-08-27 1989-08-25 Einbetonierbarer abstandhalter
EP94102506A Withdrawn EP0606107A1 (de) 1988-08-27 1989-08-25 Einbetonierter Abstandhalter

Country Status (10)

Country Link
US (1) US5269113A (enExample)
EP (3) EP0356922B1 (enExample)
AT (1) ATE113331T1 (enExample)
AU (1) AU4221889A (enExample)
CA (1) CA1329707C (enExample)
DE (1) DE3829084A1 (enExample)
ES (1) ES2064401T3 (enExample)
TR (1) TR25155A (enExample)
WO (1) WO1990002234A1 (enExample)
ZA (1) ZA896501B (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120215C2 (de) * 1991-06-19 1996-04-11 Siegfried Dreizler Verfahren zum Herstellen eines Abstandhalters für Bewehrungen und Abstandhalter
AU641116B3 (en) * 1993-01-27 1993-09-09 Kenneth Sissons Spacer for pier reinforcement cages
USD373070S (en) 1995-08-18 1996-08-27 Kriegstein Stewart B Rotatable concrete spacer
US5878546A (en) * 1997-07-10 1999-03-09 Westover; Albert R. Concrete reinforcing bar connector
NL1017623C2 (nl) * 2001-03-16 2002-09-17 Albertus Josephus Gijsbert Bal Inrichting voor het positioneren van wapeningskorven bij toepassing in funderingspalen als ook andere gewapende elementen vervaardigd uit beton.
WO2005116357A2 (en) * 2004-05-17 2005-12-08 Bradley University Concrete reinforcement apparatus and method
DE102005006334A1 (de) * 2005-02-10 2006-08-24 Andreas Heymann Abstandhalter für Bewehrungen
USD548053S1 (en) 2005-07-26 2007-08-07 Eagle Eye Products, Incl Rebar chair support
USD548055S1 (en) 2005-07-26 2007-08-07 Eagle Eye Products, Inc. Rebar chair support and base
USD548054S1 (en) 2005-07-26 2007-08-07 Eagle Eye Products, Inc. Rebar footing bolster
US20070186492A1 (en) * 2006-02-15 2007-08-16 Dayton Superior Corporation Lifting fixture for concrete structures
DE202009012725U1 (de) 2009-09-22 2010-02-25 Bag Bauartikel Gmbh Abstandhalter für Betonbewehrungen
DE202010003302U1 (de) 2010-03-05 2010-08-05 Bag Bauartikel Gmbh Abstandhalter für Betonbewehrungen
WO2014172367A1 (en) * 2013-04-16 2014-10-23 Hawkeye Concrete Products Co. Concrete product cage spacer
AU2018241240B2 (en) * 2017-03-29 2019-10-17 JALT Technologies Pty Ltd Apparatus for arranging steel reinforcement prior to a concrete pour
JP6844794B2 (ja) * 2017-09-28 2021-03-17 株式会社 豊田設計 鉄筋用スペーサ
ES2942435T3 (es) * 2018-08-09 2023-06-01 Asc Grupo Ersi S L U Sistema con marcadores para colocación de un pilote de contención con armadura asimétrica y procedimiento de utilización del mismo
CN113217059B (zh) * 2021-06-03 2025-09-19 祝文畏 一种带预应力杆芯的组合锚杆
US11713577B2 (en) 2021-06-17 2023-08-01 Dayton Superior Corporation Reinforcement positioner with clip
ES2993993B2 (es) * 2023-07-07 2025-09-29 Xpanel Building Tech Europe S L Separador de armaduras de acero para la construccion

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US750456A (en) * 1904-01-26 Composite building material
US790230A (en) * 1904-06-09 1905-05-16 Omar A Stempel Method of protecting piles or the like.
US1759626A (en) * 1926-12-28 1930-05-20 Theodore H Ockels Centering reenforcing construction for columns
US1919491A (en) * 1929-12-03 1933-07-25 Marbelite Corp Reenforced column
DE893856C (de) * 1951-04-14 1953-10-19 Emil Dipl-Ing Luz Mit Klemmbuegeln versehener Abstandhalter fuer Bewehrungseinlagen in Stahlbeton
US3257767A (en) * 1963-08-28 1966-06-28 Raymond R Lassy Snap-on spacer positioner for reinforcement
AT262863B (de) * 1965-10-13 1968-06-25 Katzenberger Tech Buero Fuer N Zylindrischer Betonkörper
US3471986A (en) * 1966-10-28 1969-10-14 Richard A Swenson Spacer for reinforcing mesh for concrete pipe and the like
FR2289696A1 (fr) * 1974-10-31 1976-05-28 Laroche Jean Pierre Distancier d'armatures
US4627211A (en) * 1985-09-23 1986-12-09 Foster Jr Thomas W Sled for a reinforcing cage used in a pier
US4741143A (en) * 1986-10-06 1988-05-03 Foster Jr Thomas W Pier sled with integral tie wires
DE8704698U1 (de) * 1987-03-30 1987-05-14 Dreizler, Siegfried, 7333 Ebersbach Abstandhalter für schwere Bewehrungen
DE8806355U1 (de) * 1988-05-13 1988-06-30 Niederberg-Chemie GmbH, 4133 Neukirchen-Vluyn Abstandshalter
US4939883A (en) * 1988-07-05 1990-07-10 Swenson Richard A Spacer for reinforcing mesh and spiral reinforcement cages
US4989388A (en) * 1989-02-24 1991-02-05 Hawkeye Concrete Products Co. Spacer for spacing reinforcing mesh wire from the form in the manufacture of concrete pipe and the like
US4999965A (en) * 1990-04-18 1991-03-19 Hawkeye Concrete Products Co. Spacer for double cage reinforcement wire mesh for concrete products

Also Published As

Publication number Publication date
US5269113A (en) 1993-12-14
EP0431055A1 (de) 1991-06-12
AU4221889A (en) 1990-03-23
DE3829084C2 (enExample) 1992-09-17
EP0356922A1 (de) 1990-03-07
ZA896501B (en) 1990-05-30
ES2064401T3 (es) 1995-02-01
EP0606107A1 (de) 1994-07-13
TR25155A (tr) 1992-10-26
CA1329707C (en) 1994-05-24
ATE113331T1 (de) 1994-11-15
DE3829084A1 (de) 1990-03-15
WO1990002234A1 (de) 1990-03-08

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