Classifications

• • 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
• • 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
  • 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

Definitions

• the present invention relates to an improvement in a floor beam of steel in composite action with concrete, said beam comprises at least one projecting, horizontal bearing plate for supporting floor structures and said improvement is intended to be fastened to an upper part of the beam in its longitudinal extension.
• the load carrying ca- pacity of the steel cross-section itself often is so limited that not even the dead load of the floor can be supported, why the beam must be propped until the concrete has obtained the strength required.
• the propping involves an evident drawback, since it often is a bar for a rational constructing.
• An object of the present invention is to provide an im ⁇ provement in composite beams by which the steel area of the upper part of a beam in a simple way can be increased and hereby increase the compression zone of the steel cross- section before the hardening of the concrete.
• the improvement also admits that the manu ⁇ facturing of the same can be rationalized in that it can be prefabricated in a number of variants and sizes and be kept in stock for use to different beam sizes depending on loads and spans.
• the improvement also has such a design that it very easy and quickly can be fixed to the upper part of a floor structure supporting beam e.g by longutudinal, in ⁇ termittent welding, which also can be performed by an automatic machine.
• the beam 1 is made of steel and has a form not closer illustrated in the drawing, which admits a composite action with concrete and comprises at least one projecting, horizontal bearing plate 3 for supporting floor structures 4.
• the prefabricated ladder 2 comprises at least two longitudinal profiles 5 running parallel to and in a predetermined distance from each other, said profiles are positionally fixable to the upper part 6 of the beam 1.
• the profiles 5 consist of rectangular steel pro ⁇ files.
• a number of transverse connecting elements 7 pro ⁇ vided in a predetermined distance from each other extend between the profiles 5.
• the connecting elements 7 consist of angle bended steel profiles, which are fixed by welding to the longi ⁇ tudinal profiles 5 having their apex formation 8 directed across the longitudinal extension of the profiles 5.
• the connecting elements 7 can be designed with any suitable form, but angle bended steel profiles are to be preferred.
• the connecting elements 7 are mounted in parallel to each other having a mutual distance of about 200-600 mm along the whole extension of the ladder 2.

Landscapes

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

Applications Claiming Priority (3)

Publications (2)

Family

ID=20376291

Family Applications (1)

Country Status (5)

Family Cites Families (5)

• 1989
  • 1989-06-15 SE SE8902163A patent/SE466609B/sv not_active IP Right Cessation
• 1990
  • 1990-06-15 DE DE69015360T patent/DE69015360T2/de not_active Expired - Fee Related
  • 1990-06-15 EP EP90909826A patent/EP0484345B1/de not_active Expired - Lifetime
  • 1990-06-15 WO PCT/SE1990/000427 patent/WO1990015907A1/en not_active Ceased
  • 1990-06-15 AU AU58460/90A patent/AU5846090A/en not_active Abandoned

Non-Patent Citations (1)

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