EP0552485A1 - Schiebeträger als Verlängerungsstück für einen Stahlbewehrungs-Gitterträger - Google Patents

Schiebeträger als Verlängerungsstück für einen Stahlbewehrungs-Gitterträger Download PDF

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Publication number
EP0552485A1
EP0552485A1 EP92121809A EP92121809A EP0552485A1 EP 0552485 A1 EP0552485 A1 EP 0552485A1 EP 92121809 A EP92121809 A EP 92121809A EP 92121809 A EP92121809 A EP 92121809A EP 0552485 A1 EP0552485 A1 EP 0552485A1
Authority
EP
European Patent Office
Prior art keywords
bracket
plane
chord
flange
sliding support
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Withdrawn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
EP92121809A
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German (de)
English (en)
French (fr)
Inventor
Julius Schätz
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
Publication of EP0552485A1 publication Critical patent/EP0552485A1/de
Withdrawn legal-status Critical Current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
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • E04C5/0609—Closed cages composed of two or more coacting cage parts, e.g. transversally hinged or nested parts
    • 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
    • E04C5/065—Light-weight girders, e.g. with precast parts

Definitions

  • the invention relates to a sliding beam as an extension piece for a steel reinforcement lattice girder consisting of two lower chords and an upper chord, which are joined together by diagonals acting on the inside of the lower chords and on the outside of the upper chord to form a truss structure.
  • Steel reinforcement lattice girders are required for the production of concrete girders, from which girder ceilings, e.g. Tile ceilings or concrete stone ceilings can be built, as shown in the approval for the D and E beams of the Filigranbau / Geretsried company.
  • Lattice girders are supplied by the steel mill in standard lengths with jumps of, for example, 12.5 cm. If intermediate lengths are required, a somewhat longer lattice girder must be cut back to the desired size. Likewise, lattice girders, which are supplied in bars with a transport length of approx. 15 m, must be cut to the required dimensions. This is a labor-intensive process that also fits poorly into the production line. There is also waste to be disposed of. The lattice girders with variable diagonal spacing each end in the standard lengths with a closed truss. When the lattice girder is shortened, it is cut open, which worsens the statics. In addition, the risk of injury at the tips increases Ends of the bars. The same problems exist with the E-lattice girder with diagonals in the form of a continuous garland, ie with a fixed distance between the diagonals.
  • the invention is based on the object, based on grid lengths of steel reinforcement lattice girders, to show a solution for the continuous adjustment of the length to the respective requirement.
  • the invention provides a sliding beam with a length such that the jump between two grid lengths can be bridged and at the same time the necessary anchoring length is given with the lattice girder.
  • the shape of the sliding support is chosen so that it is on all sides in the direction transverse to the sliding direction is securely supported on lattice girders. In other words, the sliding support can only be moved in the sliding direction and is immovably guided in directions transverse to the lattice support.
  • the sliding girder is cast in the desired extension position together with the lattice girder in its foot area and thus delivered to the construction site as a precisely dimensioned concrete girder.
  • the overall height and the cross-sectional dimension of the sliding beam are such that the lattice beam does not suffer any loss of strength in its extended end region.
  • a lattice girder 1, for which the sliding support 2 according to the invention is provided as an extension piece, consists of two lower chords 3 and an upper chord 4, which are joined together to form a truss by diagonals 5 engaging on the inner sides of the lower chords 3 and on the outer sides of the upper chord 4.
  • the sliding beam 2 in turn consists of a lower flange 6 open on one side with a width b corresponding to the width of the assigned lattice beam 1 in the area of its lower flange 3 and with a length 1 corresponding to the maximum desired extension dimension a + the necessary anchoring length v.
  • the sliding support 2 consists of a welded to the closed end of the lower flange 2, centered in a plane substantially perpendicular to the plane of the lower flange upwards and then essentially parallel to the lower flange 6 at such a height that the total height h des Sliding beam 2 is substantially the same as the height distance of the lower chords 3 from the upper chord 4 of the lattice beam 1.
  • the thus designed sliding beam 2 can be inserted with its open end in front into the lattice girder 1, the rods of its lower chord bracket 6 on the lower chords 3 and its upper chord rod 7 coming to lie below the upper chord 4 of the lattice girder 1.
  • the sliding support 2 is guided on all sides in a direction transverse to the longitudinal extent of the lattice girder and is essentially immovable on the lattice girder.
  • the extension length a desired in each case, taking into account the necessary anchoring length v, the sliding beam 2 together with the lattice beam 1 to form a concrete beam in its Concrete base area, as shown in Fig. 2.
  • the concrete girder is a so-called brick girder, consisting of the lattice girders 1 and 2 concreted in brick shells 8. Together with hanging bricks and a concrete grouting to be applied on site, such brick girders are used to build a brick ceiling.
  • the sliding support 2 has a slightly increasing total height h towards its free end and also expediently a slightly smaller overall width b, so that the sliding support 2 is held under tension and thus firmly on the lattice support 1. There is thus no need to tie the sliding support 2 to the lattice support 1.
  • the upper flange 7 is designed as part of a vertical bracket 9 connected to the closed end of the lower flange bracket substantially perpendicular to the plane of the lower flange bracket 6, as shown in FIGS. 3 to 5 .
  • the upper chord bar 7 is thus extended by a lower bar 10 which runs essentially centrally between the two lower chord bars of the lower chord bracket 6.
  • This lower central rod 10 has the advantage that the iron cross section is distributed over three rods and thus the rods of the lower flange 6 can be made with a smaller cross section.
  • the central rod 10 can be placed lower than the rods of the lower flange 6, namely in a plane below the plane of the lower chord bracket, which, as shown in FIG. 2, corresponds to the plane of the lower chords 3 of the lattice girder 1 when the sliding beam is inserted. This results in a greater overall height and consequently a greater strength of the sliding support 2.
  • the free end of the central rod 10 is advantageously angled upwards.
  • a further substantial increase in the load-bearing capacity of the lattice girder 1 in the region of the sliding girder 2 arises when the upper chord 7 forms an essentially closed loop with the central rod 10, i.e. it is led with its free end to a level below the level of the lower flange 6, namely down to the plane of the central rod 10, from where it then, as shown in FIG. 4, runs essentially parallel to the plane of the lower flange.
  • the rising and the falling side of the upper chord 7 run approximately at an angle of 45 ° to the plane of the lower chord bracket 6.
  • the angled free end of the central bar 10 comes into contact with the downward branch of the upper chord bar 7.
  • the free end of the lowered top chord 7 is returned to the free end of the central rod 10 and welded to it at 11.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
EP92121809A 1992-01-23 1992-12-22 Schiebeträger als Verlängerungsstück für einen Stahlbewehrungs-Gitterträger Withdrawn EP0552485A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924201797 DE4201797C1 (enrdf_load_stackoverflow) 1992-01-23 1992-01-23
DE4201797 1992-01-23

Publications (1)

Publication Number Publication Date
EP0552485A1 true EP0552485A1 (de) 1993-07-28

Family

ID=6450113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92121809A Withdrawn EP0552485A1 (de) 1992-01-23 1992-12-22 Schiebeträger als Verlängerungsstück für einen Stahlbewehrungs-Gitterträger

Country Status (2)

Country Link
EP (1) EP0552485A1 (enrdf_load_stackoverflow)
DE (1) DE4201797C1 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712326A1 (fr) * 1993-11-09 1995-05-19 Fimurex Elément de construction en béton armé, partiellement préfabriqué.
EP2586924A1 (en) * 2011-10-28 2013-05-01 MetalRi snc Self-supporting steel truss for mixed steel-concrete truss systems
EP3260620A1 (fr) * 2016-06-22 2017-12-27 Kp1 Prédalle à panier coulissant et panier correspondant

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR326027A (fr) * 1902-10-31 1903-05-14 Denhaut Francois Poutres en ciment ou béton armé
US1618527A (en) * 1925-07-08 1927-02-22 Samuel G Griffiths Reenforcing truss or frame
DE1269324B (de) * 1962-06-09 1968-05-30 Walter Haslinger Raeumlicher Fachwerktraeger
DE1509016A1 (de) * 1963-11-19 1968-12-19 Erich Stockmann Anordnung fuer raeumliche Bewehrungsgerippe
FR1572058A (enrdf_load_stackoverflow) * 1967-07-25 1969-06-20
GB1320777A (en) * 1969-06-23 1973-06-20 Kaiser Decken Gmbh & Co Triangular lattice girder
US4054013A (en) * 1975-04-14 1977-10-18 Ernesto Pitto Metal beam system for steel-concrete structures
AU505366B2 (en) * 1976-06-11 1979-11-15 Civil & Civic Pty. Limited Improvements in reinforced concrete construction
FR2550254A1 (fr) * 1983-08-03 1985-02-08 Standarm Sarl Armatures metalliques de liaison destinees a la realisation de structures en beton arme
DE3344038A1 (de) * 1983-12-06 1985-07-25 Jürgen Dipl.-Ing. 6607 Quierschied Unterländer Stahlblechverbundtragsysteme

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR326027A (fr) * 1902-10-31 1903-05-14 Denhaut Francois Poutres en ciment ou béton armé
US1618527A (en) * 1925-07-08 1927-02-22 Samuel G Griffiths Reenforcing truss or frame
DE1269324B (de) * 1962-06-09 1968-05-30 Walter Haslinger Raeumlicher Fachwerktraeger
DE1509016A1 (de) * 1963-11-19 1968-12-19 Erich Stockmann Anordnung fuer raeumliche Bewehrungsgerippe
FR1572058A (enrdf_load_stackoverflow) * 1967-07-25 1969-06-20
GB1320777A (en) * 1969-06-23 1973-06-20 Kaiser Decken Gmbh & Co Triangular lattice girder
US4054013A (en) * 1975-04-14 1977-10-18 Ernesto Pitto Metal beam system for steel-concrete structures
AU505366B2 (en) * 1976-06-11 1979-11-15 Civil & Civic Pty. Limited Improvements in reinforced concrete construction
FR2550254A1 (fr) * 1983-08-03 1985-02-08 Standarm Sarl Armatures metalliques de liaison destinees a la realisation de structures en beton arme
DE3344038A1 (de) * 1983-12-06 1985-07-25 Jürgen Dipl.-Ing. 6607 Quierschied Unterländer Stahlblechverbundtragsysteme

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712326A1 (fr) * 1993-11-09 1995-05-19 Fimurex Elément de construction en béton armé, partiellement préfabriqué.
EP2586924A1 (en) * 2011-10-28 2013-05-01 MetalRi snc Self-supporting steel truss for mixed steel-concrete truss systems
EP3260620A1 (fr) * 2016-06-22 2017-12-27 Kp1 Prédalle à panier coulissant et panier correspondant
FR3053062A1 (fr) * 2016-06-22 2017-12-29 Kp1 Predalle a panier coulissant et panier correspondant
FR3053061A1 (fr) * 2016-06-22 2017-12-29 Kp1 Predalle a panier coulissant et panier correspondant

Also Published As

Publication number Publication date
DE4201797C1 (enrdf_load_stackoverflow) 1993-07-08

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