NO159032B - Steel beams. - Google Patents
Steel beams. Download PDFInfo
- Publication number
- NO159032B NO159032B NO842492A NO842492A NO159032B NO 159032 B NO159032 B NO 159032B NO 842492 A NO842492 A NO 842492A NO 842492 A NO842492 A NO 842492A NO 159032 B NO159032 B NO 159032B
- Authority
- NO
- Norway
- Prior art keywords
- flanges
- steel
- underside
- steel beam
- edges
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 10
- 239000010959 steel Substances 0.000 title claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
-
- 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
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/043—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the hollow cross-section comprising at least one enclosed cavity
-
- 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
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0452—H- or I-shaped
-
- 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
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
- Body Structure For Vehicles (AREA)
- Heat Treatment Of Articles (AREA)
Description
Oppfinnelsen vedrører en stålbjelke med lukket tverrsnittsprofil og en underside med i sideretning utragende flenser dimensjonert for å tjene som opplagring for bjelkelagselementer og lignende prefabrikerte elementer. The invention relates to a steel beam with a closed cross-sectional profile and an underside with laterally projecting flanges dimensioned to serve as storage for joist elements and similar prefabricated elements.
Bjelkelagskonstruksjoner i bygninger av forskjellig type fremstilles i stor utstrekning av prefabrikerte elementer. Herved foreligger et stort behov for stålbjelker for å bære elementene. En egnet tverrsnittsform er det kjente såkalte hatteprofil, dvs. en lukket profil med ved de nedre kanter utragende opplagringsflenser. Fremstillingen av slike bjelker har inntil nå krevet anvendelse av dyre spesialmaskiner. En forutsetning for fremstillingen har vært at bjelkens to side-plater har moderat tykkelse, hensiktsmessig maksimalt ca. 5 mm. Dette medfører riktignok en god materialøkonomi, men medfører også visse utlemper m.h.t. styrke og evne til å tåle temperatur-økninger ved brann. Beam layer constructions in buildings of various types are largely made from prefabricated elements. There is therefore a great need for steel beams to support the elements. A suitable cross-sectional shape is the well-known so-called hat profile, i.e. a closed profile with protruding storage flanges at the lower edges. The production of such beams has until now required the use of expensive special machines. A prerequisite for the production has been that the beam's two side plates have a moderate thickness, ideally a maximum of approx. 5 mm. This does indeed result in a good material economy, but it also entails certain drawbacks in terms of strength and ability to withstand temperature increases in the event of fire.
Hensikten med oppfinnelsen er å tilveiebringe en forbedret bjelke, som er enklere og billigere å fremstille, som kan fremstilles under anvendelse av vanlige sveiseautomater, og som har bedre styrkeegenskaper ved store belastninger og ved brann enn de inntil nå kjente bjelker. The purpose of the invention is to provide an improved beam, which is simpler and cheaper to produce, which can be produced using ordinary welding machines, and which has better strength properties under heavy loads and in case of fire than the hitherto known beams.
Denne hensikt oppnås ifølge oppfinnelsen ved en bjelke som er kjennetegnet ved de trekk som fremgår av kravene. Ved å gå ut fra en I-.bjelke, som foreligger på markedet i en mengde for-skjellige dimensjoner, vil sveiseoperasjonen bli begrenset til den minst mulige, nemlig fastsveising av en overside og en bredere underside med utragende flenser. Til fremstilling av undersiden og til fremstilling av de utragende flenser kan man hensiktsmessig velge en ståltype med bedre styrkeegenskaper enn bjelken forøvrig, noe som i høy grad reduserer kostnadene for bjelken. This purpose is achieved according to the invention by a beam which is characterized by the features that appear in the requirements. By starting from an I-beam, which is available on the market in a number of different dimensions, the welding operation will be limited to the smallest possible, namely welding of an upper side and a wider lower side with protruding flanges. For the manufacture of the underside and for the manufacture of the projecting flanges, a type of steel with better strength properties than the rest of the beam can be suitably chosen, which greatly reduces the costs of the beam.
Oppfinnelsen er i det følgende forklart nærmere under hen-visning til den vedlagte tegning som viser rent skjematisk et utførelseseksempel for en bjelke ifølge oppfinnelsen, og sett i ett tverrsnitt. The invention is explained in more detail in the following with reference to the attached drawing which shows purely schematically an embodiment of a beam according to the invention, and seen in a cross-section.
Den viste bjelke omfatter en valse I-bjelke 1 av standard-type med brede flenser 2 og ett steg 3 med noe mindre materialtykkelse enn flensene 2. The beam shown comprises a roller I-beam 1 of standard type with wide flanges 2 and one step 3 with a slightly smaller material thickness than the flanges 2.
Bjelken 1 er utstyrt med en overside 4 som er fastsveiset ved 5 til flensenes 2 øvre kanter, samt en underside 6 som er betydelig bredere enn bjelken 1 og er fastsveiset ved 7 til The beam 1 is equipped with an upper side 4 which is welded at 5 to the upper edges of the flanges 2, as well as a lower side 6 which is considerably wider than the beam 1 and is welded at 7 to
flensenes 2 nedre kanter. Undersidens 6 utragende kanter danner den ferdige bjelkes opplagringsflenser 8, på hvilke det f.eks. the 2 lower edges of the flanges. The protruding edges of the underside 6 form the finished beam's storage flanges 8, on which e.g.
kan plasseres bjelkelagselementer 9, som antydet med stiplete linjer. joist elements 9 can be placed, as indicated by dashed lines.
Bjelken er, som det skulle fremgå av ovenstående, meget enkel å fremstille ved.hjelp av vanlige sveiseautomater. Standardbjelken 1 er allment tilgjengelig med ønskede egenskaper og de to delene 4 og 6 kan velges med egnede dimensjoner og ståltype avhengig av bjelken 1. Man kan derved oppnå større tverrkraft- og vridningskapasitet enn ved tilsvarende konvensjonelle bjelker, og bjelken kan ved behov lett utstyres med stegavstivninger. The beam is, as should be clear from the above, very easy to produce with the help of ordinary welding machines. The standard beam 1 is widely available with desired properties and the two parts 4 and 6 can be selected with suitable dimensions and steel type depending on the beam 1. One can thereby achieve greater lateral force and torsional capacity than with corresponding conventional beams, and the beam can be easily equipped with step bracings.
Ved at bjelken takket være de vertikale siders 2 sidestiv-het kan overføre store horisontale trykkrefter, kan, slik det er vist ved henvisningstallet 10 på tegningen, bjelkelagselementer anordnes kontinuerlig over bjelken ved støping. As the beam can transmit large horizontal compressive forces thanks to the lateral stiffness of the vertical sides 2, as is shown by the reference number 10 in the drawing, beam layer elements can be arranged continuously over the beam during casting.
Et spesielt viktig trekk er at bjelkens sperreevne ved brann kan forventes å være større enn ved de vanlige bjelker i og med at varmeoverføringsevnen blir effektivere og utgangs-profilets flenser 2 har større restkapasitet pga. sin tykkelse enn det som er tilfellet med sideplatene ved konvensjonelle bjelker. Det skulle derfor ikke være nødvendig med noen ekstra brannbeskyttelse av bjelkens 6 underside og av opplagrings-flensene 8. A particularly important feature is that the beam's blocking ability in the event of fire can be expected to be greater than with ordinary beams, as the heat transfer capability becomes more efficient and the output profile's flanges 2 have a greater residual capacity due to its thickness than is the case with the side plates of conventional beams. It should therefore not be necessary for any additional fire protection of the underside of the beam 6 and of the storage flanges 8.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8303558A SE448897B (en) | 1983-06-21 | 1983-06-21 | Joist-supporting steel beam |
Publications (3)
Publication Number | Publication Date |
---|---|
NO842492L NO842492L (en) | 1984-12-27 |
NO159032B true NO159032B (en) | 1988-08-15 |
NO159032C NO159032C (en) | 1988-11-23 |
Family
ID=20351708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO842492A NO159032C (en) | 1983-06-21 | 1984-06-20 | Steel beams. |
Country Status (2)
Country | Link |
---|---|
NO (1) | NO159032C (en) |
SE (1) | SE448897B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE466609B (en) * | 1989-06-15 | 1992-03-09 | Joergen Thor | DEVICE AT A COLLABORATION BALL |
CN109057156B (en) * | 2017-01-03 | 2020-08-14 | 广东南岭建设工程有限公司 | Construction method of concrete column for improving torsion-resistant bearing capacity |
-
1983
- 1983-06-21 SE SE8303558A patent/SE448897B/en not_active IP Right Cessation
-
1984
- 1984-06-20 NO NO842492A patent/NO159032C/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO842492L (en) | 1984-12-27 |
NO159032C (en) | 1988-11-23 |
SE8303558L (en) | 1984-12-22 |
SE8303558D0 (en) | 1983-06-21 |
SE448897B (en) | 1987-03-23 |
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