EP0242238B1 - Stahl- und bewehrte Betonkonstruktionen, insbesondere zur Trägerherstellung, insbesondere als Dachbalken benutzbarer Träger oder Träger mit grosser Spannweite - Google Patents

Stahl- und bewehrte Betonkonstruktionen, insbesondere zur Trägerherstellung, insbesondere als Dachbalken benutzbarer Träger oder Träger mit grosser Spannweite Download PDF

Info

Publication number
EP0242238B1
EP0242238B1 EP87400182A EP87400182A EP0242238B1 EP 0242238 B1 EP0242238 B1 EP 0242238B1 EP 87400182 A EP87400182 A EP 87400182A EP 87400182 A EP87400182 A EP 87400182A EP 0242238 B1 EP0242238 B1 EP 0242238B1
Authority
EP
European Patent Office
Prior art keywords
concrete
concrete member
beam according
casing
steel
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.)
Expired - Lifetime
Application number
EP87400182A
Other languages
English (en)
French (fr)
Other versions
EP0242238A1 (de
Inventor
Jean Bard
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.)
Bouygues SA
Original Assignee
Bouygues 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
Priority claimed from FR8601086A external-priority patent/FR2593536B1/fr
Priority claimed from FR8609041A external-priority patent/FR2600358B1/fr
Application filed by Bouygues SA filed Critical Bouygues SA
Publication of EP0242238A1 publication Critical patent/EP0242238A1/de
Application granted granted Critical
Publication of EP0242238B1 publication Critical patent/EP0242238B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E04C3/10—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal prestressed
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • 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
    • E04C3/294—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 of concrete combined with a girder-like structure extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/44—Arched girders or portal frames of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed
    • E01D2101/285—Composite prestressed concrete-metal
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal
    • E01D2101/32—Metal prestressed
    • 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
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • 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
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces
    • 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
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0495—Truss like structures composed of separate truss elements the truss elements being located in several non-parallel surfaces

Definitions

  • the invention relates to a reinforced concrete and steel beam, in particular for purlin use.
  • the present invention relates to a beam consisting of an upper reinforced concrete member of relatively small section compared to its length and of a lower steel member, the concrete member being at least locally placed above the steel member.
  • the steel frame being made up of a hull connected from place to place to the concrete frame by metal connectors disposed respectively to the right and to the left of the longitudinal vertical median plane of the beam, these connectors being welded to the hull and having their ends incorporated into the concrete frame.
  • the present invention relates to such a beam but in which the transmission of the compressive forces is essentially ensured by the concrete of the concrete member.
  • the present invention therefore relates to beams having the characteristic of using reinforced concrete in all the compressed parts and steel in the form of profiles in all the stretched parts.
  • a beam according to the invention is a rigid structure essentially consisting of reinforced concrete and steel intended to support in service compression forces and tension forces, where the parts intended to support compression forces are essentially constituted by a mass of concrete and the parts intended to resist tensile stresses are essentially constituted by an assembly of steel profiles substantially devoid of intrinsic rigidity, this assembly being mainly external to the concrete and being anchored in the concrete which provides lateral stiffness and buckling resistance.
  • the steel part is constituted by an assembly of profiles of simple shape, for example rectangular plates or, better still, concrete bars.
  • Typical embodiments of beams in accordance with the invention will be described below, the most typical embodiment being a beam consisting of a concrete member of relatively small cross section relative to its length and of a steel member consisting of a hull which rises at its ends in the concrete frame and which is, on the other hand, connected from place to place to the concrete frame by couples arranged in transverse planes which are perpendicular to the concrete frame, the ends of these couples being embedded in the concrete frame.
  • the hull is preferably constituted by a single profile but can also be constituted by several profiles assembled end to end and / or by several metal profiles in parallel.
  • the hull is constituted by a hollow tube which contains a prestressing cable, which in particular makes it possible to produce beams of great span.
  • the beams of the invention which are shown in Figures 1 to 19 consist of two superimposed members, one B of concrete and the other A of steel.
  • the concrete member is systematically located above the steel member when the beam is in service.
  • the concrete frame B is generally constituted by an elongated rectilinear block of reinforced concrete and this block is preferably given a section which is easy to demold on a building site, such as for example a straight section of trapezoidal shape (FIGS. 7).
  • This frame is reinforced by a reinforcement F according to the rules of the art so that the frame mainly resists compressive forces.
  • the member must have sufficient inertia to withstand buckling phenomena.
  • the steel frame A is constituted by a longitudinal section L which extends along the length of the concrete frame along a curve whose distance from the concrete frame is maximum in the middle of the beam and decreases progressively towards the ends of the beam, this longitudinal section penetrating into the concrete member in the region of the ends of this member and even emerging on the end edges of the concrete member, as seen in Figures 2, 3 and 1O.
  • the steel frame A comprises, on the other hand, steel connectors C which connect from place to place the profile L to the concrete frame.
  • these sections L and these connectors C have a part C1 welded to the section L and a part C2 anchored in the concrete member.
  • these connectors have a general V shape, the top of the V being flattened and welded along its length to the profile L while the ends of the wings of the V are also flattened and embedded in the concrete of the member B.
  • the connectors C are arranged in pairs respectively to the right and to the left of the longitudinal vertical median plane P of the beam, as best seen in Figures 5 and 6 which are sections (at two scales different) of the concrete frame ( Figure 5) and the steel frame ( Figure 6) by the transverse vertical median plane of the beam in Figure 3 (plane IV-IV) of Figure 3.
  • the longitudinal section L of the steel frame is constituted by a round of relatively large diameter concrete steel while the connecting connectors C, C 'of the steel frame A to the concrete frame B are constituted by ro concrete steel nds of smaller diameter and it can also be seen in FIG. 6 that the local connection between the concrete rounds of the couples C and C 'and the concrete round of the hull L are constituted by welds S.
  • a concrete rod whose diameter is in the range 2O to 6O mm is used for the L profile while a concrete rod whose diameter is in the range 1O to 30 mm is used for the connectors, these ranges being given on a preferred but nonlimiting basis.
  • the longitudinal profile L is preferably formed by a single profile but it is not excluded to constitute it by several assembled profiles.
  • FIG. 18 shows, by way of example, an assembly of two sections L1, L2 by means of an end-to-end assembly sleeve M in which the ends of the sections, previously shaped into truncated cones and threaded, are pressed in by screwing. It is not necessary to describe in detail this assembly means known per se.
  • Profile L can, on the other hand, consist of several profiles arranged in parallel instead of being constituted by a single profile and FIG.
  • profile L comprises a profile L3 followed by two parallel profiles L4, L5, these various profiles being assembled by a plate p which is freely traversed by the profiles whose through ends are then welded to the plate. This type of assembly makes it easy to adjust the length of the L profile on request.
  • the number and shape of the connectors C is also chosen as a function of the performance requirements of the beam, knowing that the steel frame A essentially only has the role of supporting the tensile forces.
  • the lower longitudinal section L of the steel frame follows the curve of the moments and supports a substantially constant tensile force over its entire length under symmetrical loading, while the upper concrete member B, which provides longitudinal rigidity, withstands a substantially constant compressive force under symmetrical loading.
  • the manufacture of a beam according to the invention can easily be done on site using a mold of simple design, a prototype of which has been shown in FIG. 8.
  • the molding position is upside down from the service position in the sense that during molding the steel frame A is located above the mold Z, supported from place to place by suitable supports, as can be seen in FIG. 8.
  • the reinforcement F is arranged which is carried out according to the rules of art.
  • FIG. 9 the cross section of a reinforcement, the parts in broken lines representing the reinforcement before shaping.
  • the ends of the connectors C are introduced into the mold as well as the ends of the longitudinal profile L which pass through the reinforcement to come out at the longitudinal ends of the mold.
  • a metal part S in the shape of an L (FIGS. 10, 11) which is intended to ensure the fixing of the concrete member on a support by bolting.
  • the fixing part S is incorporated into the concrete frame during molding.
  • This fastener S has a flat S10 embedded in the end edge of the concrete frame and this flat has an opening T10 for the passage of the end of the longitudinal section L of the steel frame, the protruding end being then welded to the flat, as best seen in Figures 1O and 11.
  • the fixing part S has another flat S20 intended to rest on the support of the beam, and this other flat S20 has a light T20 for the passage of a stud which will be used to fix the part S to the support of the beam.
  • the plates S20 and S'20 of the fixing parts S and S ' are preferably superimposed, as can be seen in FIG. 1O, to be crossed by the same stud; alternatively, they could be independent of each other and crossed by respective studs.
  • the support on which rests one end of the beam is any support in itself depending on the circumstances of use. It can be for example a wall, a post or a transverse beam.
  • the support will generally be a beam arranged as a crossbowman.
  • the concrete member provides lateral rigidity and works very slightly in bending under the loads of the material which constitutes the covering. The forces introduced by the local bending phenomena are second order compared to the main forces.
  • the fixing of the profile L to the fixing piece S can also be obtained by mechanical means (bolting, etc.), for example by threading or machining the end of the profile L.
  • FIGS. 22 to 28 relate to a variant of the invention, more particularly with a view to the production of long-span beams.
  • the present invention can in particular allow the production of long-span beams, in particular for making frames for industrial or sports roofs.
  • the tube capable of receiving a prestressing cable which will later be tensioned.
  • the tube consists of a single tube section or of several tube sections fixed end to end by welds or by fixing pieces, for example by bolted plates. More specifically, the structure shown in FIGS.
  • 20 and 21 comprises a beam S consisting of a rectilinear concrete member B and a steel member A consisting on the one hand by a tube T of arcuate shape, the concavity of which is turned towards the top when the beam is in the service position and, on the other hand, by diagonals, for example concrete rods, arranged in pairs C, one end of which is welded to the tube and the other end of which is embedded in the concrete of the concrete member B.
  • beams can be made according to the technique described above, where the beams are made with the steel frame disposed above the concrete frame.
  • a multi-strand prestressing cable F is threaded into the tube and tensioned according to the calculated force, by any means known per se and so as to bring into the tube compressive stresses always below the elastic limit. These means are shown diagrammatically in FIG. 20 by cones W. Subsequently, the tube is injected with mortar or other curable medium to block the prestressing cable and protect it from rust.
  • the prestressing is calculated so that under normal use load of the beam, the tube remains slightly compressed.
  • the prestressing cable first lengthens by a few centimeters, then the tube begins to work in tension: at break, all the steel is tensioned.
  • This process has great advantages because it allows the prefabrication described above under normal conditions.
  • the tubular member is possibly made up of several sections, connected by bolted plates, or welded end to end.
  • the welding of large diameter tubes is a known and simple operation.
  • the invention thus uses prestressing cables which are delivered in great length while the tubular profiles are limited due to the transport difficulty.
  • this technique does not penalize the quantity of metal used for the following reason: if one loads such a structure until rupture, the steels of the tube and prestressing work at the maximum of their capacity taking into account their possibilities relative elongation.
  • the authorized load represents a percentage of the breaking load.
  • the tube under normal use load, the tube remains compressed and thus the beam is clear of the risk constituted by a bad weld in the assembly of the tubes end to end; noting however that the resistance capacity of the tube was tested by the tensile force generated by the self-weight before tensioning of the cable.
  • the prestressing is carried out after the beam has been placed in its service position. It is possible to use the beam supports to tension the prestressing cable. In a particular variant, the cable is tensioned before the beam is brought into the service position.
  • a beam as described above is suitable for spans from 20 to 50 meters, for example.
  • a more complex beam made up in fact of several beams arranged end to end and crossed by a common prestressing cable.
  • Figures 22 to 27 schematically show an embodiment of such a beam.
  • the structure shown in Figure 22 includes a central beam S1 and two end beams S2, S3.
  • the central beam S1 consists of a concrete frame B1, of arcuate shape, the concavity of which is turned downwards when the beam is in the service position, and a steel frame, formed on the one hand by a tube T1 , of arcuate shape, the concavity of which is turned upwards when the beam is in the service position and, on the other hand, by diagonals, arranged in pairs C dont, one end of which is welded to the tube and the other of which end is embedded in the concrete of the concrete member B.
  • the end beams S2 and S3 have a similar structure but the curvatures of the members are less accentuated and the relative positions of the members are reversed.
  • Figures 25et26 illustrate an exemplary embodiment of the junction of the central beam S1 and an end beam, for example the beam S2.
  • the concrete members of the two beams are provided at their ends with plates K1, K2 which are anchored in the members by rods (for example concrete rods) r1, r2 welded to the plates and embedded in the concrete.
  • rods for example concrete rods
  • r1, r2 welded to the plates and embedded in the concrete.
  • the structure at this stage is stable under its own weight. Under the dead weight of the beam, the tube is stretched.
  • a multi-strand prestressing cable F is then threaded into the three tubes and into the posts P, from F1 to F2, and tensioned according to the calculated force, by any means known per se and so as to bring into the tube compression stresses always below the elastic limit. Later, the tube is injected with mortar or other curable medium to block the prestressing cable and protect it from rust.
  • FIG. 28 relates to a very long-span structure produced using the span technique the technique described in connection with FIG. 22, the prestressing cables being put in place by span, from F1 to F2, from F2 to F3, from F3 to F4, etc ...
  • the number of successive concrete members is generally two or three, but it can also be greater. It will also be understood that, depending on the case, the steel hull tube has its ends which are embedded in the concrete member or which pass through the concrete member.
  • the beams and structures of this variant of the invention are in particular intended to produce roof frames, the cover being located in the extension of the concrete frame, that is to say - say along the curved surface formed by straight and horizontal lines resting on the concrete members. It goes without saying, however, that the invention is not limited to this application: another important application of the invention is the production of bridges.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (18)

  1. Träger, bestehend aus einem Obergurt aus Stahlbeton (B) mit bezogen auf seine Länge vergleichsweise geringem Querschnitt und einem Untergurt aus Stahl (A), wobei sich der Betongurt wenigstens lokal oberhalb des Stahlgurts befindet und der Stahlgurt aus einem Längskörper (L) besteht, der stellenweise durch jeweils rechts und links der vertikalen Längsmittelebene des Trägers angeordnete Verbindungsglieder (C) mit dem Betongurt verbunden ist, wobei diese Verbindungsglieder mit dem Längskörper (L) verschweißt und ihre Enden in den Betongurt (B) eingefügt sind, dadurch gekennzeichnet, daß diese Enden in dem Stahlbetongurt im Beton des Gurts derart verankert sind, daß sie im Beton weder untereinander noch mit einer anderen Armierung des Betongurts verbunden sind.
  2. Träger nach Anspruch 1, dadurch gekennzeichnet, daß die auf einer Seite der vertikalen Mittelebene gelegenen Verbindungsglieder (C) mit den auf der anderen Seite dieser Ebene gelegenen Verbindungsgliedern Paare bilden, die in zu dem Betongurt senkrechten Querebenen angeordnet sind.
  3. Träger nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Verbindungsglieder (C) V-förmig ausgebildet sind, wobei die Spitze des Vs abgeplattet und ihrer Länge nach an den Längskörper angeschweißt ist, während die Enden der Schenkel des Vs ebenso abgeplattet und in den Beton des Betongurts (B) eingelassen sind.
  4. Träger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Längskörper (L) an seinen Enden in den Betongurt hinein ansteigt.
  5. Träger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Betongurt (B) einen geradlinigen, trapezförmigen oder konvexen Querschnitt aufweist.
  6. Träger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Längskörper (L) durch ein Längsprofil gebildet ist, das sich entlang der Länge des Betongurts einem Bogen folgend erstreckt, dessen Abstand zum Betongurt in der Mitte des Trägers maximal ist und in Richtung der Enden des Trägers fortschreitend abnimmt.
  7. Träger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Längskörper (L) der Momentenlinie folgt und eine Zugkraft aufnimmt, die auf seiner ganzen Länge unter symmetrischer Belastung im, wesentlichen konstant ist, während der Betongurt (B), der die Längssteifigkeit bewirkt, eine unter symmetrischer Belastung im wesentlichen konstante Druckkraft aufnimmt.
  8. Träger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein L-förmiges Metallteil (S), das zur Bewerkstelligung der Befestigung des Betongurts an einer Stütze durch Verschraubung vorgesehen ist, an einem Längsende des Betongurts (B) angebracht ist.
  9. Träger nach Anspruch 8, dadurch gekennzeichnet, daß das Befestigungsteil (S) eine in die Endfläche des Betongurts eingefügte Flachseite (S₁₀) aufweist, daß diese Flachseite eine Öffnung (T₁₀) für die Durchführung des Endes des Längskörpers (L) aufweist und daß das herausragende Ende des Längskörpers an die Flachseite angeschweißt ist.
  10. Träger nach Anspruch 9, dadurch gekennzeichnet, daß das Befestigungsteil (S) eine weitere Flachseite (S₂₀) aufweist, die zum Auflegen auf eine Stütze des Trägers vorgesehen ist und daß diese weitere Flachseite (S₂₀) ein Langloch (T₂₀) für die Durchführung eines Bolzens aufweist, der zur Befestigung des Teils (S) an der Stütze des Trägers dient.
  11. Träger nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Längskörper (L) und die Verbindungsglieder (C) aus Betonstahl gebildet sind.
  12. Träger nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Längskörper aus Stahl aus einer hohlen Röhre (T) besteht, die ein Vorspannkabel (F) enthält.
  13. Träger nach Anspruch 12, dadurch gekennzeichnet, daß die Röhre (T) des Längskörpers mit Mörtel oder einer anderen härtbaren Masse ausgespritzt ist, um das Vorspannkabel nach dem Vorspannen zu fixieren.
  14. Träger nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß der Betongurt (B) im wesentlichen geradlinig ist.
  15. Träger nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die Röhre (T) Enden aufweist, die in dem Betongurt (B) aufgenommen sind.
  16. Träger nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß die Röhre (T) aus mehreren Rohrteilstücken besteht, deren Enden jeweils durch Schweißnähte oder Befestigungsteile aneinander befestigt sind.
  17. Träger nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß er einen zentralen Träger (S₁) zwischen zwei Endträgern (S₂, S₃) beinhaltet, wobei der Betongurt (B₁) des zentralen Trägers oberhalb des Stahlgurts angeordnet ist und von gebogener, konkav nach unten weisender Form ist und der Stahlgurt des zentralen Trägers aus einer Röhre (T₁) von gebogener, konkav nach oben weisender Form besteht, die Endträger analoge Strukturen wie jene des zentralen Trägers aufweisen, die Krümmungen der Gurte jedoch weniger ausgeprägt und die relativen Positionen der Gurte aus Beton und aus Stahl vertauscht sind, die Betongurte der drei Träger zusammenhängend angeordnet und fest verbunden sind und die Röhren der drei Träger von einem gemeinsamen Vorspannkabel durchquert werden.
  18. Verwendung eines Trägers nach einem der Ansprüche 1 bis 17 als Pfette in einer Dachbinderkonstruktion.
EP87400182A 1986-01-27 1987-01-27 Stahl- und bewehrte Betonkonstruktionen, insbesondere zur Trägerherstellung, insbesondere als Dachbalken benutzbarer Träger oder Träger mit grosser Spannweite Expired - Lifetime EP0242238B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8601086 1986-01-27
FR8601086A FR2593536B1 (fr) 1986-01-27 1986-01-27 Structures en beton arme et en acier, notamment pour realiser des poutres et, en particulier, des poutres a usage de pannes.
FR8609041 1986-06-23
FR8609041A FR2600358B1 (fr) 1986-06-23 1986-06-23 Poutres en beton arme et en acier de grande portee

Publications (2)

Publication Number Publication Date
EP0242238A1 EP0242238A1 (de) 1987-10-21
EP0242238B1 true EP0242238B1 (de) 1993-06-23

Family

ID=26224987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400182A Expired - Lifetime EP0242238B1 (de) 1986-01-27 1987-01-27 Stahl- und bewehrte Betonkonstruktionen, insbesondere zur Trägerherstellung, insbesondere als Dachbalken benutzbarer Träger oder Träger mit grosser Spannweite

Country Status (2)

Country Link
EP (1) EP0242238B1 (de)
DE (1) DE3786293T2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2226058B (en) * 1988-12-14 1992-12-02 Kenneth John Pryce Improvements relating to building construction
KR100423757B1 (ko) 2001-05-04 2004-03-22 원대연 프리스트레스트 합성 트러스 보 및 그의 제조 방법
RU2536594C1 (ru) * 2013-08-29 2014-12-27 Татьяна Рустиковна Забалуева Здание с большепролетным помещением

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865059A (en) * 1929-07-18 1932-06-28 Budd Edward G Mfg Co Girder construction
CH201557A (de) * 1937-10-14 1938-12-15 Coray & Stauffacher Verfahren zur Erstellung eines armierten Betontragwerkes.
GB586394A (en) * 1944-09-11 1947-03-18 George Kilner Reinforced concrete construction
CH273887A (de) * 1946-02-20 1951-03-15 Coff Leo Kombinierte Metall- und Beton-Tragkonstruktion.
FR1028419A (fr) * 1950-11-27 1953-05-22 Poutrelle préfabriquée en béton armé pour planchers et murs, et moule pour sa fabrication
US2809074A (en) * 1953-05-05 1957-10-08 Mcdonald James Leonard Structural beam with fire extinguisher
DE1124660B (de) * 1956-11-27 1962-03-01 Gutehoffnungshuette Sterkrade Verbundtraeger
DE1139528B (de) * 1959-05-19 1962-11-15 Ingenjoers N Invent Aktiebolag Bogenbruecke
FR1285747A (fr) * 1961-04-06 1962-02-23 Dispositif pour l'adaptation de poutrelles en béton armé à des charpentes métalliques
FR1319962A (fr) * 1962-04-20 1963-03-01 Procédé pour la construction de bâtiments, avec éléments porteurs constitués par des câbles ou barres d'acier
FR1544207A (fr) * 1967-09-22 1968-10-31 Poutre métallique composite, à précontrainte
DE2153495A1 (de) * 1971-10-27 1973-05-10 Rheinstahl Ag Fertigteildeckenplatte fuer den montagebau
CH623879A5 (de) * 1977-10-14 1981-06-30 Emil Peter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Beton-Kalender 1969, Taschenbuch für Beton- und Stahlbetonbau und die verwandten Fächer, Verlag von Wilhelm Ernst & Sohn, Berlin-München *

Also Published As

Publication number Publication date
DE3786293T2 (de) 1994-02-03
DE3786293D1 (de) 1993-07-29
EP0242238A1 (de) 1987-10-21

Similar Documents

Publication Publication Date Title
CA2314218C (en) Tension and compression members for erecting structures
EP0340051B1 (de) Brückentafel für eine Brücke mit grosser Spannweite
WO1988007604A1 (fr) Pont constitue d'un tablier et de moyens pour le supporter, notamment pont haubane de grande portee, et son procede de construction
FR2495275A1 (fr) Structure en treillis, en particulier mat-support d'antenne
OA11854A (en) Cage de ferraillage pour un élément en béton armé.
EP0242238B1 (de) Stahl- und bewehrte Betonkonstruktionen, insbesondere zur Trägerherstellung, insbesondere als Dachbalken benutzbarer Träger oder Träger mit grosser Spannweite
FR2789096A1 (fr) Conduite de circulation de fluide sous pression
FR2600358A2 (fr) Poutres en beton arme et en acier de grande portee
EP0126011B1 (de) Verfahren zur Herstellung von hohlen Elementen wie etwa Leitungen, Silos oder Bunkern
EP0337120A1 (de) Zusammengesetzter Verbundträger
FR2593536A1 (fr) Structures en beton arme et en acier, notamment pour realiser des poutres et, en particulier, des poutres a usage de pannes.
FR2693492A1 (fr) Pont haubanné et son procédé de réalisation.
FR2616166A1 (fr) Pont a ossature mixte et son procede de construction
FR2812310A1 (fr) Longeron de pont prefabrique et procede de fabrication d'un tel pont
FR2682141A1 (fr) Procede pour realiser un joint de construction entre deux elements prefabriques d'un ouvrage, joint de construction s'y rapportant et ouvrage comportant un tel joint.
FR2598947A1 (fr) Procede de fabrication de poutrelles precontraintes en acier et poutrelles obtenues
EP3239425A1 (de) Gebäudeplatte mit reduzierter masse
FR2599070A2 (fr) Liaison metallique rigide entre planchers-dalles levees et poteaux prefabriques en beton arme pour structures autostables
WO1997020989A1 (fr) Perfectionnements aux procedes pour rehabiliter les ponts suspendus et aux ponts ainsi rehabilites
FR2940337A1 (fr) Poutrelle metallique pour la fabrication de planchers
EP0434555B1 (de) Viadukt für Eisenbahngleise
FR2667885A1 (fr) Procede de construction d'un pont haubane forme d'un assemblage de voussoirs.
BE505566A (de)
FR2846681A1 (fr) Structure porteuse modulaire
FR2522042A1 (fr) Procede d'assemblage d'elements de charpente particulierement en beton arme ou precontraint et dispositifs permettant cet assemblage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT

17P Request for examination filed

Effective date: 19880421

17Q First examination report despatched

Effective date: 19890428

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BOUYGUES

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

ITF It: translation for a ep patent filed

Owner name: CON LOR S.R.L.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930630

REF Corresponds to:

Ref document number: 3786293

Country of ref document: DE

Date of ref document: 19930729

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960119

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19960120

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960212

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19970131

BERE Be: lapsed

Owner name: BOUYGUES

Effective date: 19970131

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19971001

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060126

Year of fee payment: 20