EP0212593A2 - Verbundträger - Google Patents

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Publication number
EP0212593A2
EP0212593A2 EP86111326A EP86111326A EP0212593A2 EP 0212593 A2 EP0212593 A2 EP 0212593A2 EP 86111326 A EP86111326 A EP 86111326A EP 86111326 A EP86111326 A EP 86111326A EP 0212593 A2 EP0212593 A2 EP 0212593A2
Authority
EP
European Patent Office
Prior art keywords
recesses
beam according
concrete
profiles
profile
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.)
Granted
Application number
EP86111326A
Other languages
English (en)
French (fr)
Other versions
EP0212593A3 (en
EP0212593B1 (de
Inventor
Jean-Baptiste Schleich
Raymond Baus
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT86111326T priority Critical patent/ATE62307T1/de
Publication of EP0212593A2 publication Critical patent/EP0212593A2/de
Publication of EP0212593A3 publication Critical patent/EP0212593A3/fr
Application granted granted Critical
Publication of EP0212593B1 publication Critical patent/EP0212593B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a composite beam essentially consisting of steel profiles and concrete, the interior of the contour defined by the profiles is filled with concrete, possibly reinforced, and at least one of the profiles of which has the external face of its wings. discovered.
  • a composite beam can in particular be used as a post or floor support and has excellent fire resistance.
  • Such fire-resistant composite beams have for example been described in patents LU 84 772 and LU 84 966.
  • the concrete filling mass is connected to the core of the profile by reinforcements, such as lattices, T-bars. or head studs.
  • the section of the steel profile, the concrete section and the reinforcement section contribute according to their mechanical properties, which are a function of temperature, and their percentage of section, to the transmission of loads.
  • the load absorption function moves continuously from the section of the steel section to the section of reinforced concrete. Laboratory fire tests have shown that despite the high thermal conductivity of steel, such beams retain their load-bearing capacity beyond the required 90 minutes.
  • the object of the present invention is to avoid this drawback and to propose a composite beam, the hot properties of which are no longer dependent on the exposed steel surfaces and which leaves all latitude in its architectural design.
  • One of the major advantages of the invention consists in the fact that it allows the control of the flow of calories as well as their guiding towards places of the beam whose heating has only a limited influence on the lift of the together. In this way beams, which have a high lift when cold, but large areas of exposed steel, keep an acceptable lift when hot. Note that we can take advantage of the recesses in the profiles to position a hoop reinforcing the concrete.
  • Figs. 1 and 2 represent the isotherms (in degrees Celsius) in a quarter cross section of two known beams, after having exposed them to fire for 90 minutes.
  • the concrete filling 2 apart from the wide web sections 1 (type HE 650 AA), the concrete filling 2.
  • the two structures are distinguished by the fact that that shown in Fig. 1 comprises a reinforcement 4 (the concrete rods have been given a square section for reasons of convenience), while the structure shown in FIG. 2 has, instead of an armature, a profile H (reference 3) welded to the core of profile 1.
  • the temperature of the coldest point located each time in the concrete, is only worth 100 ° C for the variant shown in Fig. 1 while it is 220 ° C in the case of FIG. 2.
  • the most serious fact is that the temperature of the central part of the core of the profile is more than twice as high in the case of FIG. 2 (255 ° C resp. 117 ° C).
  • the presence of the section 3 reduces, as a result of the external surface 5 of one of its wings exposed to the action of fire, in unacceptable proportions the fire resistance of the assembly.
  • Fig. 3 shows a cross section through a composite beam formed by a profile 31 with a high height core and by two profiles 33 with a low height core, the wings of which are fixed by welding to the core of the profile 31.
  • the inside of the outline octagonal defined by the profiles is filled with concrete 32.
  • profiles are provided in the core with recesses 34.
  • these recesses 34 have an elongated shape and are located near the wing, close to the bulge of metal existing at the point of the passage of the core to the wing of the profile.
  • a second series of elongated recesses 44 can be provided, vertically offset (see FIG. 5).
  • the length 45 of such a recess, produced by flame cutting, is about twenty cm and its width 46 is two cm.
  • the heat flux which progresses, for conventional beams, easily from the exposed surface towards the central part of the core, is slowed down by the presence of these recesses, whether they fill with concrete during manufacture or not.
  • the thermal brake is obviously more effective when the concrete does not penetrate into the recesses, which can be ensured by housing therein material with low thermal conductivity, such as styropor.
  • Composite beams, produced according to the variants according to Figs. 4 and 5 have fire resistances which are worth 1.5 times respectively twice that of an identical structure, but without recesses in the core.
  • elongated recesses can be given, according to manufacturing constraints, any other shape and arrangement capable of ensuring the desired goal.
  • angles 71, concrete bars 72, square bars 73 or flat bars 74 are fixed to it by welding.
  • angles 71 are combined with the recesses shown in FIG. 6, we can take advantage of the holes 61 (located at the extreme right of this figure) to bolt the angle iron to the core.
  • the concrete bars 72 are joined together and fixed to the web of the profile using spot welding.
  • Auxiliary structures not only increase cold and hot load-bearing capacity of the composite beam but also favorably influence the heat flow when hot. Indeed, there is redistribution of calories from the core to the concrete thanks to the cooling fin effect that these auxiliary structures play. This effect is particularly pronounced for the angles 71 and the flat irons 74.
  • the central metal parts 75 and 76 of the sections 31 and 33 are therefore all the less heated.
  • Fig. 8 has been shown a composite beam with rectangular section, constituted by a profile 81, with a high height core and two profiles 82, with a low height core.
  • the composite beam with hexagonal section shown in Fig. 9, is constituted by concrete 32 and a solid central tube 91 to which have been welded, with an offset of 120 °, three T-profiles 92.
  • the recesses 34 provide this beam, despite the high exposed metal / metal ratio protected by concrete, acceptable fire resistance. It is nevertheless advisable to additionally have angles 71 or flat irons 74 near the recesses 34.
  • the composite beam with hexagonal section shown in Fig. 10, is constituted by concrete 32 and a very high-profile core 101, to which two T-profiles 102 have been fixed by welding.
  • the recesses 34 which have also been provided in the profiles 102 are, as a result of their small exposed area, not absolutely necessary.
  • the composite beam with triangular section and rounded corners shown in Fig. 11, is made up of concrete 32 and three T-sections 111, at the ends of the cores from which thirds of the tube have been welded 112.
  • the different wings of the sections 111 are joined by welding and define a space 113 which can be kept available or fill with concrete or even with water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Building Environments (AREA)
  • Glass Compositions (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Finishing Walls (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP86111326A 1985-08-30 1986-08-16 Verbundträger Expired - Lifetime EP0212593B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111326T ATE62307T1 (de) 1985-08-30 1986-08-16 Verbundtraeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU86063 1985-08-30
LU86063A LU86063A1 (fr) 1985-08-30 1985-08-30 Poutrelle composite

Publications (3)

Publication Number Publication Date
EP0212593A2 true EP0212593A2 (de) 1987-03-04
EP0212593A3 EP0212593A3 (en) 1989-03-15
EP0212593B1 EP0212593B1 (de) 1991-04-03

Family

ID=19730537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111326A Expired - Lifetime EP0212593B1 (de) 1985-08-30 1986-08-16 Verbundträger

Country Status (6)

Country Link
US (1) US4779395A (de)
EP (1) EP0212593B1 (de)
AT (1) ATE62307T1 (de)
CA (1) CA1303380C (de)
DE (1) DE3678510D1 (de)
LU (1) LU86063A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2206830A1 (en) * 1997-05-15 1998-11-15 Le Groupe Canam Manac Inc. High rise steel column
KR100427405B1 (ko) * 2001-03-07 2004-04-17 박재만 피에스에스씨 합성거더
JP3899866B2 (ja) * 2001-08-07 2007-03-28 鹿島建設株式会社 鋼板コンクリート構造の継手構造
US8065848B2 (en) 2007-09-18 2011-11-29 Tac Technologies, Llc Structural member
WO2006017552A2 (en) 2004-08-02 2006-02-16 Tac Technologies, Llc Engineered structural members and methods for constructing same
US7721496B2 (en) 2004-08-02 2010-05-25 Tac Technologies, Llc Composite decking material and methods associated with the same
US8266856B2 (en) 2004-08-02 2012-09-18 Tac Technologies, Llc Reinforced structural member and frame structures
US7930866B2 (en) 2004-08-02 2011-04-26 Tac Technologies, Llc Engineered structural members and methods for constructing same
CA2502346A1 (en) * 2005-03-24 2006-09-24 Royal Group Technologies Limited Fire barrier component
US8484915B1 (en) 2012-07-11 2013-07-16 King Saud University System for improving fire endurance of concrete-filled steel tubular columns
US9677273B2 (en) 2014-11-26 2017-06-13 King Saud University Concrete-filled steel tubular column for high load carrying capacity and fire resistance
RU179751U1 (ru) * 2017-07-26 2018-05-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" КГАСУ Сталебетонная стойка составного сечения
RU2675273C2 (ru) * 2017-12-22 2018-12-18 Дмитрий Николаевич Парышев Трубобетонная балка
US10597864B1 (en) * 2019-05-01 2020-03-24 Storage Structures, Inc. Structural member assemblies, beams, and support structures comprising same

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US312349A (en) * 1885-02-17 Cast-iron column
US596217A (en) * 1897-12-28 John w
US515963A (en) * 1894-03-06 Structural metal-work
US650299A (en) * 1898-05-09 1900-05-22 Louis Broussas Process of connecting t-irons.
US916378A (en) * 1908-02-15 1909-03-23 James C Sunderland Corner-plate for concrete piers, &c.
US926005A (en) * 1908-05-19 1909-06-22 William F Kerlin Reinforcing device.
US925865A (en) * 1909-03-25 1909-06-22 Lewis A Brown Post or column.
US966274A (en) * 1909-09-15 1910-08-02 Henry H Wainwright Reinforced column of concrete.
US1203283A (en) * 1915-08-30 1916-10-31 Clarence W Utzman Building-construction element.
US1457598A (en) * 1921-12-27 1923-06-05 Raymond G Osborne Protecting reenforcement in concrete and the like
US1573735A (en) * 1924-05-05 1926-02-16 George M Nelson Concrete reenforcement
GB237221A (en) * 1924-07-15 1925-11-26 James Cyril Stobie An improved pole for carrying electric light cables, telegraph and telephone wires and for other purposes
US2065493A (en) * 1934-09-27 1936-12-22 Gerald G Greulich Structural member
US2198985A (en) * 1938-08-19 1940-04-30 Alonzo W Bailey Steel pile structure
CH211069A (fr) * 1939-06-02 1940-08-31 Roth Paul Procédé pour la fabrication de poutres en béton armé.
DE813020C (de) * 1950-07-09 1951-09-06 Huettenwerke Ilsede Peine A G Staehlerner Rammpfahl
GB1264302A (de) * 1967-11-17 1972-02-23
GB1577841A (en) * 1976-07-21 1980-10-29 Fromont M M V C Structural units for use in the construction and erection of structures
JPS5341005A (en) * 1976-09-28 1978-04-14 Taisei Corp Execution method of flexible reinforced concrete pile
LU84772A1 (de) * 1983-04-25 1984-11-28 Arbed Verbundtraeger
LU84966A1 (de) * 1983-08-12 1985-04-24 Arbed Verbundprofile

Also Published As

Publication number Publication date
LU86063A1 (fr) 1987-03-06
CA1303380C (fr) 1992-06-16
DE3678510D1 (de) 1991-05-08
ATE62307T1 (de) 1991-04-15
US4779395A (en) 1988-10-25
EP0212593A3 (en) 1989-03-15
EP0212593B1 (de) 1991-04-03

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