EP0035634B1 - Fire-resistant composite beam - Google Patents

Fire-resistant composite beam Download PDF

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Publication number
EP0035634B1
EP0035634B1 EP81100521A EP81100521A EP0035634B1 EP 0035634 B1 EP0035634 B1 EP 0035634B1 EP 81100521 A EP81100521 A EP 81100521A EP 81100521 A EP81100521 A EP 81100521A EP 0035634 B1 EP0035634 B1 EP 0035634B1
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EP
European Patent Office
Prior art keywords
concrete
section
webs
walled
encompassed
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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
Application number
EP81100521A
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German (de)
French (fr)
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EP0035634A3 (en
EP0035634A2 (en
Inventor
Werke Aktiengesellschaft Hoesch
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Hoesch AG
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Hoesch Werke AG
Hoesch AG
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Publication of EP0035634A2 publication Critical patent/EP0035634A2/en
Publication of EP0035634A3 publication Critical patent/EP0035634A3/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/943—Building elements specially adapted therefor elongated
    • 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 fire-resistant composite girder for supports, light strip girders or the like, consisting of an open steel profile, the cavities of which are filled with concrete, compound materials being arranged on the inner walls of the steel profile, which project into the cavities filled with concrete, and wherein Steel profile has a web connecting its outer parts, which is surrounded on both sides by concrete.
  • Roll supports filled with concrete in particular wide flange supports, the flanges of which remain unprotected on the outside, are known to have an increased fire resistance duration, e.g. achieve fire resistance class F 90 according to the old DIN 4102 if they are additionally reinforced by inserted round steel and the concrete is connected to the bridge by means of anchoring agents.
  • these composite beams known from DE-AI-2 829 864 have the disadvantage that the additional reinforcement and dowelling work is very time-consuming and labor-intensive.
  • FR-A-382 117 a fire-resistant composite beam is also known, which is composed of individual double-T beams by screwing, which is very expensive.
  • This known composite carrier also comes no closer to the subject of the application than the prior art known from DE-AI-2 829 864.
  • the object is achieved with a composite beam of the type described in the preamble of claim 1 in such a way that the ends of the outer parts of the profile or the profiles are bent at right angles in the concrete enclosing that the web surrounded by the concrete Profile with a one-piece girder cross-section or the webs surrounded by concrete with a multi-part combined girder cross-section are thicker than the outer parts of the profile (s), and that the thick-walled web (s) surrounded by concrete are towards the inside of the beam have to be pointed, thin-walled small webs, the ends of which have bead-like thickenings which are also surrounded by the concrete, the profile including its profilings provided on the inner walls and the webs and bead-like thickenings being designed as a homogeneous extruded profile.
  • the transition regions of the thick-walled web to the outer parts are expediently thin-walled.
  • the inner sides of the extruded profile are profiled step-like, sawtooth-like, dovetail-shaped, undulating or in some other way increasing the surface.
  • the advantages of the composite girder according to the invention can be seen in particular in the fact that with it a fire resistance class according to DIN 18 230 (new) without additional fire protection, such as e.g. Reinforcements and steel anchors, the subsequent installation of which requires considerable time and cost.
  • the increased load capacity in the event of a fire is e.g. through the homogeneous formation of webs and profiles on the inside during the production of the extruded profile itself.
  • the possibilities of extrusion technology are limited with regard to the size of the profiles, but the advantages of the integrated reinforcement and the optimal adhesive bond can be exploited in a number of supporting structures, for which a longer fire resistance is required, without special fire protection measures.
  • the construction according to the invention is particularly economical because the load-bearing capacity of the extruded profile in steel / concrete composite is about 30% higher than that of the pure steel profile, which pays off the additional costs of the extruded technology and the concrete filling, without prejudice to the loss of fire protection.
  • the composite beam 1 consists of extruded profiles 3, 5 filled with concrete 2, which e.g. have a cross-section similar to a profile (FIG. 1 LC - (FIGS. 2 and 3)), the flange ends 6 each being bent at right angles to surround the concrete 2.
  • the extruded profiles 3, 5 shown have on their inner sides protruding thin-walled webs 7, which have bead-like thickenings 8 at their free ends 3, 5 is increased.
  • the central webs 11, 12 surrounded on both sides by concrete 2 are thicker than the other walls, the transition regions 13, 14 of the webs 11, 12 to the flanges 6 are thinner.
  • a three-part composite carrier 1 is shown, which is composed of three extruded profiles 5 according to FIG. 2.
  • This composite beam 1 can e.g. can be used in a honeycomb-like cell construction for the central support of three adjoining spatial cells, not shown.

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  • 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)
  • Building Environments (AREA)

Description

Die Erfindung betrifft einen feuerwiderstandsfähigen Verbundträger für Stützen, Lichtbandträger od. dgl., bestehend aus einem offenen Stahlprofil, dessen Hohlräume mit Beton ausgefüllt sind, wobei an den Innenwänden des Stahlprofils Verbundmittel angeordnet sind, die in die mit Beton gefüllten Hohlräume ragen, und wobei das Stahlprofil einen seine Aussenteile verbindenden Steg aufweist, der beidseitig von Beton umgeben ist.The invention relates to a fire-resistant composite girder for supports, light strip girders or the like, consisting of an open steel profile, the cavities of which are filled with concrete, compound materials being arranged on the inner walls of the steel profile, which project into the cavities filled with concrete, and wherein Steel profile has a web connecting its outer parts, which is surrounded on both sides by concrete.

Von mit Beton ausgefüllten Walzträgern, insbesondere Breitflanschträgern, deren Flansche aussen aber ungeschützt bleiben, ist bekannt, dass sie eine erhöhte Feuerwiderstandsdauer, z.B. die Feuerwiderstandsklasse F 90 nach der alten DIN 4102 erreichen, wenn sie zusätzlich durch eingelegte Rundstähle entsprechend bewehrt sind und der Beton mit dem Steg durch Verdübelungsmittel verbunden ist. Diese aus der DE-AI-2 829 864 bekannten Verbundträger haben aber den Nachteil, dass die zusätzlichen Bewehrungs- und Verdübelungsarbeiten sehr zeitaufwendig und lohnintensiv sind.Roll supports filled with concrete, in particular wide flange supports, the flanges of which remain unprotected on the outside, are known to have an increased fire resistance duration, e.g. achieve fire resistance class F 90 according to the old DIN 4102 if they are additionally reinforced by inserted round steel and the concrete is connected to the bridge by means of anchoring agents. However, these composite beams known from DE-AI-2 829 864 have the disadvantage that the additional reinforcement and dowelling work is very time-consuming and labor-intensive.

Aus der FR-A-2 123 239 ist eine profilierte Untergurtbewehrung eines Stahlbeton-Deckenträgers bekannt, die für sich allein - auch mit einer Betonfüllung - keine nennenswerte Tragfähigkeit besitzt. Erst durch die zusätzliche, ausserhalb des Unterprofils liegende Rundstahlbewehrung und die mindestens 1 Ofache Menge Beton, die ausserhalb des Metallprofils mit zusätzlicher Schalung eingebracht wird, erhält der dann einsatzbereite Stahlbetonträger erst seine Tragfähigkeit. Für alle Querschnitte S 1 bis S 20, die in der FR-A-2 123 239 dargestellt sind, lässt sich auch mit Betonfüllung keine Feuerwiderstandsklasse, also nicht einmal F 30, erreichen, da die Stahlteile im wesentlichen aussen angeordnet sind und im Brandfall sofort durchwärmen.From FR-A-2 123 239 a profiled lower chord reinforcement of a reinforced concrete floor girder is known which by itself - even with a concrete filling - has no significant load-bearing capacity. Only through the additional round steel reinforcement lying outside the sub-profile and the at least 1 times the amount of concrete, which is placed outside the metal profile with additional formwork, does the ready-to-use reinforced concrete beam only become stable. For all cross sections S 1 to S 20, which are shown in FR-A-2 123 239, no fire resistance class, not even F 30, can be achieved even with concrete filling, since the steel parts are essentially arranged on the outside and immediately in the event of a fire soak.

Bei den aus der FR-A-2 249 213 bekannten Stützen handelt es sich bei den Ziffern 3 bzw. 5 nicht um die über die gesamte Profillänge durchlaufenden Profilteile, sondern um aufgeschweisste punktuelle Kopfbolzendübel, die mit Bewehrungsstählen (4) verschweisst sind. Diese Kopfbolzendübel können also nicht zum tragenden Querschnitt gerechnet werden. Wie aus den Fig. 2 und 4 hervorgeht, fallen alle äusseren Stahlteile bei Brandeinwirkung aus, so dass nur ein Restquerschnitt als Stahlbetonteil übrig bleibt und keine Feuerwiderstandsklasse erreicht wird.In the supports known from FR-A-2 249 213, the numbers 3 and 5 are not the profile parts that run through the entire length of the profile, but rather spot welded-on headed dowels that are welded with reinforcing steel (4). These stud bolts cannot therefore be included in the load-bearing cross-section. As can be seen from FIGS. 2 and 4, all outer steel parts fail when exposed to fire, so that only a residual cross section remains as a reinforced concrete part and no fire resistance class is achieved.

Aus der FR-A-382 117 ist noch ein feuerwiderstandsfähiger Verbundträger bekannt, der aus einzelnen Doppel-T-Trägem durch Verschrauben zusammengesetzt ist, was sehr aufwendig ist. Auch kommt dieser bekannte Verbundträger dem Anmeldungsgegenstand nicht näher als der aus der DE-AI-2 829 864 bekannte Stand der Technik.From FR-A-382 117 a fire-resistant composite beam is also known, which is composed of individual double-T beams by screwing, which is very expensive. This known composite carrier also comes no closer to the subject of the application than the prior art known from DE-AI-2 829 864.

Von daher ist es Aufgabe der Erfindung, eine Stahlprofil-Konstruktion so auszubilden,

  • a) dass das Stahlprofil als alleinige tragende Schalung für einen Verbundträger dient,
  • b) dass keine zusätzlichen Bewehrungsstähle erforderlich werden,
  • c) dass keine zusätzlichen Verbundmittel nötig sind,
  • d) dass mindestens eine Feuerwiderstandsdauer von 30, 60 oder mehr Minuten erreicht wird,
  • e) dass es als Stütze oder als zusammengesetzter Rahmenträger für Lichtbändern von Shedhallen eingesetzt werden kann.
It is therefore an object of the invention to design a steel profile construction
  • a) that the steel profile serves as the sole load-bearing formwork for a composite girder,
  • b) that no additional reinforcement steel is required,
  • c) that no additional composite materials are necessary,
  • d) that a fire resistance duration of 30, 60 or more minutes is achieved,
  • e) that it can be used as a support or as a composite frame support for light strips of shed halls.

Nach der Erfindung wird die Aufgabe bei einem Verbundträger der im Oberbegriff des Anspruchs 1 beschriebenen Art in der Weise gelöst, dass die Enden der Aussenteile des Profils bzw. der Profile in rechtwinklig in den Beton einfassender Weise abgebogen sind, dass der vom Beton umgebene Steg des Profils bei einteiligem Trägerquerschnitt bzw. die vom Beton umgebenen Stege bei mehrteiligem kombinierten Trägerquerschnitt dickwandiger als die Aussenteile des bzw. der Profile ausgebildet sind, und dass der bzw. die dickwandige(n) von Beton umgebene(n) Steg(e) nach dem Trägerinneren zu weisende, dünnwandige kleine Stege aufweisen, deren Enden wulstartige Verdickungen besitzen, die gleichfalls von dem Beton umgeben sind, wobei das Profil einschliesslich seiner an den Innenwandungen vorgesehenen Profilierungen sowie der Stege und wulstartigen Verdickungen als homogenes Strangpressprofil ausgebildet ist.According to the invention the object is achieved with a composite beam of the type described in the preamble of claim 1 in such a way that the ends of the outer parts of the profile or the profiles are bent at right angles in the concrete enclosing that the web surrounded by the concrete Profile with a one-piece girder cross-section or the webs surrounded by concrete with a multi-part combined girder cross-section are thicker than the outer parts of the profile (s), and that the thick-walled web (s) surrounded by concrete are towards the inside of the beam have to be pointed, thin-walled small webs, the ends of which have bead-like thickenings which are also surrounded by the concrete, the profile including its profilings provided on the inner walls and the webs and bead-like thickenings being designed as a homogeneous extruded profile.

In zweckmässiger Weise sind aus Gründen der geringeren Wärmeleitfähigkeit die Übergangsbereiche des an sich dickwandigen Stegs zu den Aussenteilen dünnwandig ausgebildet. Zur Verbesserung der Haftverbundwirkung sind die Innenseiten des Strangpressprofils stufenförmig, sägezahnartig, schwalbenschwanzförmig, wellenförmig oder in anderer die Oberfläche vergrössernder Weise profiliert.For reasons of lower thermal conductivity, the transition regions of the thick-walled web to the outer parts are expediently thin-walled. In order to improve the adhesive bond effect, the inner sides of the extruded profile are profiled step-like, sawtooth-like, dovetail-shaped, undulating or in some other way increasing the surface.

Die Vorteile des Verbundträgers nach der Erfindung sind insbesondere darin zu sehen, dass mit ihm eine Feuerwiderstandsklasse nach DIN 18 230 (neu) ohne zusätzlichen Brandschutz, wie z.B. Bewehrungen und Stahldübel, deren nachträgliche Anbringung erheblichen Zeit- und Kostenaufwand bedeutet, erreicht wird. Bei dem erfindungsgemässen Verbundträger wird die erhöhte Tragfähigkeit im Brandfall z.B. durch die homogene Ausbildung von Stegen und Profilierungen der Innenseiten bei der Herstellung des Strangpressprofils selbst mit ausgebildet. Die Möglichkeiten der Strangpresstechnik sind zwar hinsichtlich der Grösse der Profile begrenzt, aber die Vorteile der integrierten Bewehrung und des optimalen Haftverbundes lassen sich doch bei einer Reihe von Tragkonstruktionen, für die eine höhere Feuerwiderstandsdauer gefordert wird, unter Verzicht auf besondere Brandschutzmassnahmen ausnutzen. Die Bauweise nach der Erfindung ist deshalb besonders wirtschaftlich, weil die Tragfähigkeit des Strangpressprofils in Stahl/Beton-Verbundweise etwa 30% höher als die des reinen Stahlprofils liegt, wodurch sich die Mehrkosten der Strangpresstechnik und der Betonfüllung bezahlt machen, unbeschadet des Wegfalls des Brandschutzes.The advantages of the composite girder according to the invention can be seen in particular in the fact that with it a fire resistance class according to DIN 18 230 (new) without additional fire protection, such as e.g. Reinforcements and steel anchors, the subsequent installation of which requires considerable time and cost. In the composite beam according to the invention, the increased load capacity in the event of a fire is e.g. through the homogeneous formation of webs and profiles on the inside during the production of the extruded profile itself. The possibilities of extrusion technology are limited with regard to the size of the profiles, but the advantages of the integrated reinforcement and the optimal adhesive bond can be exploited in a number of supporting structures, for which a longer fire resistance is required, without special fire protection measures. The construction according to the invention is particularly economical because the load-bearing capacity of the extruded profile in steel / concrete composite is about 30% higher than that of the pure steel profile, which pays off the additional costs of the extruded technology and the concrete filling, without prejudice to the loss of fire protection.

In der Zeichnung ist der Verbundträger nach der Erfindung anhand von Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 einen Verbundträger im Schnitt,
  • Fig. 2 einen weiteren Verbundträger im Schnitt, der einen Teil eines zusammengesetzten Verbundträgers gemäss Fig. 3 bildet,
  • Fig. 3 einen zusammengesetzten Verbundträger im Schnitt.
In the drawing, the composite carrier according to the invention is explained in more detail using exemplary embodiments. Show it:
  • 1 is a composite carrier in section,
  • 2 a further composite beam in section, which forms part of a composite composite beam according to FIG. 3,
  • Fig. 3 shows a composite composite carrier in section.

Wie aus den Fig. 1 bis 3 hervorgeht, besteht der Verbundträger 1 aus mit Beton 2 gefüllten Strangpressprofilen 3, 5, die z.B. einenl-(Fig. 1 LC -(Fig. 2 und 3) profilähnlichen Querschnitt haben, wobei die Flanschenden 6 zur Einfassung des Betons 2 jeweils rechtwinklig abgebogen sind. Der in Fig. 2 dargestellte Verbundträger 1 betrifft dabei nur einen Teil des in der Fig. 3 dargestellten zusammengesetzten Verbundträgers 1. Die dargestellten Strangpressprofile 3, 5 weisen an ihren Innenseiten abstehende dünnwandige Stege 7 auf, die an ihren freien Enden wulstartige Verdickungen 8 haben. Ausserdem sind die Innenseiten wellenförmig 9 profiliert, wodurch die Haftung des Betons 2 in den Strangpressprofilen 3, 5 erhöht wird.As can be seen from FIGS. 1 to 3, the composite beam 1 consists of extruded profiles 3, 5 filled with concrete 2, which e.g. have a cross-section similar to a profile (FIG. 1 LC - (FIGS. 2 and 3)), the flange ends 6 each being bent at right angles to surround the concrete 2. The composite beam 1 shown in FIG 3. Composite composite girder 1 shown. The extruded profiles 3, 5 shown have on their inner sides protruding thin-walled webs 7, which have bead-like thickenings 8 at their free ends 3, 5 is increased.

Bei dem in Fig. 1 dargestellten I-förmigen Strangpressprofil 3 und dem in Fig. 3 gezeigten Verbundträger 1 sind die beidseitig von Beton 2 umgebenen mittleren Stege 11, 12 dicker ausgebildet als die übrigen Wände, wobei die Übergangsbereiche 13,14 der Stege 11, 12 zu den Flanschen 6 dünnwandiger sind.In the I-shaped extruded profile 3 shown in FIG. 1 and the composite beam 1 shown in FIG. 3, the central webs 11, 12 surrounded on both sides by concrete 2 are thicker than the other walls, the transition regions 13, 14 of the webs 11, 12 to the flanges 6 are thinner.

Die Fig. 2 und 3 zeigen das C-profilähnliche Strangpressprofil 5, wobei im Bereich der Flanschenden 6 angeordnete gegenüberliegende Stege 15 mit einem Baustahlmattenstreifen 16 zusätzlich verschweisst sein können.2 and 3 show the extruded profile 5, which is similar to a C profile, it being possible for opposing webs 15 arranged in the region of the flange ends 6 to be additionally welded to a reinforcing steel strip 16.

In der Fig. 3 ist z.B. ein dreiteiliger Verbundträger 1 dargestellt, der sich aus drei Strangpressprofilen 5 nach der Fig. 2 zusammensetzt. Dieser Verbundträger 1 kann z.B. bei einer wabenartigen Zellenkonstruktion für die Mittelunterstützung von drei nicht dargestellten aneinandergefügten Raumzellen verwendet werden.3, e.g. a three-part composite carrier 1 is shown, which is composed of three extruded profiles 5 according to FIG. 2. This composite beam 1 can e.g. can be used in a honeycomb-like cell construction for the central support of three adjoining spatial cells, not shown.

Claims (3)

1. Fire-resistant composite beam (1) for columns, lighting-strip beams or the like, comprising at least one open steel section (3) whose hollow spaces are filled with concrete (2), wherein coupling means are provided on the internal walls of the steel section which project into the hollow spaces filled with concrete, and wherein the steel section (3) includes a web (11) connecting its outer parts and encompassed on both sides by concrete (2), characterised in that the ends (6) of the outer parts of the section (3) or of the section (5) are bent at right-angles to border the concrete (2), the web (11) of the section (3) encompassed by the concrete in the case of a one-part beam cross-section and the webs (12) encompassed by the concrete in the case of a multi-part combined beam cross-section are thicker-walled than the outer parts of the section or sections (3, 5), and the thick-walled web or webs (11, 12) encompassed by concrete have thin-walled small webs (7) directed away from the interior of the beam and whose ends have bulbous thickenings (8) which are likewise encompassed by the concrete (2), wherein the section (3, 5), including its profiling (9) provided on the internal wall surfaces, as well as the webs (11, 12, 7) and bulbous thickenings (8), is made as a homogeneous extrusion.
2. Composite beam according to claim 1, characterised in that the transition zones (13, 14) between the thick-walled webs (11, 12) and the outer parts are thin-walled.
3. Composite beam according to claims 1 and 2, characterised in that the inner sides of the extrusion (3, 5) are profiled with a stepped, sawtooth-shaped, dovetailed or undulating (9) configuration or in some other manner to increase the surface area.
EP81100521A 1980-03-11 1981-01-24 Fire-resistant composite beam Expired EP0035634B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803009258 DE3009258C2 (en) 1980-03-11 1980-03-11 Fire-resistant composite beam
DE3009258 1980-03-11

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EP0035634A2 EP0035634A2 (en) 1981-09-16
EP0035634A3 EP0035634A3 (en) 1981-11-04
EP0035634B1 true EP0035634B1 (en) 1983-12-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015632A (en) * 2012-12-09 2013-04-03 中国矿业大学 Corrugated steel plate confined concrete combination column and manufacturing method thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT386237B (en) * 1984-07-19 1988-07-25 Feichtmayr Josef ELONG STRETCH SUPPORT ELEMENT FOR SUPPORT CONSTRUCTIONS AND CEILING MADE WITH SUCH SUPPORT ELEMENTS
DE3621007C1 (en) * 1986-06-23 1987-09-03 Hoesch Ag Fire-resistant composite beam
DE4039335C3 (en) * 1990-12-10 2003-02-27 Gernot Wolperding Rolled profile for composite beams
EP3081708B1 (en) 2015-04-18 2020-09-02 HALFEN GmbH Anchor rail for anchoring in concrete
EP3081706B1 (en) * 2015-04-18 2020-03-25 HALFEN GmbH Anchor rail for anchoring in concrete

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE2829864A1 (en) * 1977-07-12 1979-02-01 Arbed COMPOSITE BEAM

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FR382117A (en) * 1907-09-21 1908-01-30 Albert Adam Construction process by fractions of reinforced cement columns with double-t irons.
US1794079A (en) * 1927-02-03 1931-02-24 Gilbert Brereton Building construction
DE804662C (en) * 1949-09-23 1951-04-26 Enno Becker Steel bead post
BE521925A (en) * 1953-06-13
GB1292450A (en) * 1968-05-08 1972-10-11 Technion Res & Dev Foundation Structural building units
DE2124131A1 (en) * 1970-06-17 1971-12-23 Giannino, Salvatore, Aversa (Italien) Prefabricated building element for the production of concrete beams
FR2149191A5 (en) * 1972-08-04 1973-03-23 Lefevre Gabriel
BE821235R (en) * 1973-10-26 1975-02-17 STEEL BOXES AND THEIR USE FOR THE EXECUTION OF MIXED STEEL-CONCRETE POSTS OR PILES.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2829864A1 (en) * 1977-07-12 1979-02-01 Arbed COMPOSITE BEAM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103015632A (en) * 2012-12-09 2013-04-03 中国矿业大学 Corrugated steel plate confined concrete combination column and manufacturing method thereof

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Publication number Publication date
EP0035634A3 (en) 1981-11-04
DE3009258C2 (en) 1983-06-23
DE3009258A1 (en) 1981-09-17
EP0035634A2 (en) 1981-09-16

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