FR2593540A1 - Method for producing girders made up of steel beams and concrete and girders obtained according to this method - Google Patents

Method for producing girders made up of steel beams and concrete and girders obtained according to this method Download PDF

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Publication number
FR2593540A1
FR2593540A1 FR8701016A FR8701016A FR2593540A1 FR 2593540 A1 FR2593540 A1 FR 2593540A1 FR 8701016 A FR8701016 A FR 8701016A FR 8701016 A FR8701016 A FR 8701016A FR 2593540 A1 FR2593540 A1 FR 2593540A1
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FR
France
Prior art keywords
beams
concrete
girders
eccentric
metal
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
FR8701016A
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French (fr)
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FR2593540B1 (en
Inventor
Rene De Keyser
Guy Rigot
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.)
Sbbm & Six Const Entreprises
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Sbbm & Six Const Entreprises
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Publication of FR2593540A1 publication Critical patent/FR2593540A1/en
Application granted granted Critical
Publication of FR2593540B1 publication Critical patent/FR2593540B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members 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
    • E04C3/29—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

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

Abstract

Metal beams are used and are pre-bent by an off-centre prestress applied over all or part of the length of the beams and this prestress is produced before embedding the beams in concrete. The invention may be applied to girders intended for bridge decks, building floors and other civil engineering structures.

Description

"Procédé de réalisation de poutres composées de poutrelles
en acier et de béton et poutres obtenues selon ce procéd.e"
La présente invention se rapporte à la réalisa avion de poutres en béton et acier précontraint destinées a être utilisées comme tabliers de pont, planchers de bâtiments et en général pour tous ouvrages de génie civil."Method for producing beams composed of beams
steel and concrete and beams obtained according to this procedure. "
The present invention relates to the realization of a plane of concrete and prestressed steel beams intended to be used as bridge decks, floors of buildings and in general for all civil engineering works.

Les techniques connues de béton armé, précontraint par pré-tension, précontraint par post-tension, réfléchi ainsi que les combinaisons possibles sont représentées dans les dessins annexés par les figures 1 à 9 représentant respectivement :
- Figure 1 une poutre en béton armé
- Figure 2 une poutre en acier
- Figure 3 une poutre en acier enrobé de béton
- Figure 4 une poutre en béton précontraint par pré-tension
- Figure 5 une poutre en beton précontraint par post-tension
- Figure 6 une poutre en béton précontraint par pré et post-tensions
- Figure 7 une poutre en acier précontraint par post-tension ;
- Figures 8a et 8b une poutre en acier enrobé préfléchi
Figures 9a et 9b une poutre en acier enrobé préfléchi et précontraint par post-tension.The known techniques of reinforced concrete, prestressed by pre-tension, prestressed by post-tension, reflected as well as the possible combinations are represented in the drawings annexed by FIGS. 1 to 9 representing respectively:
- Figure 1 a reinforced concrete beam
- Figure 2 a steel beam
- Figure 3 a steel beam coated with concrete
- Figure 4 a concrete beam prestressed by pre-tension
- Figure 5 a concrete beam prestressed by post-tensioning
- Figure 6 a pre-stressed and post-tensioned concrete beam
- Figure 7 a post-tensioned steel beam;
- Figures 8a and 8b a pre-bent coated steel beam
Figures 9a and 9b a coated steel beam pre-bent and prestressed by post-tensioning.

Le but de la présente invention est de réaliser des poutres ayant des performances supérieures à celles connues, c'est-à-dire capables de supporter de très fortes charges pour des portées tres grandes en utilisant une hauteur de construction et donc un encombrement minimum. The object of the present invention is to produce beams having performances greater than those known, that is to say capable of supporting very high loads for very large spans by using a construction height and therefore a minimum bulk.

A cet effet, on utilise des poutrelles métalliques et l'on met ces poutrelles en précambrure par précontrainte excentrée appliquée sur toute ou partie de la longueur des poutrelles et cette précontrainte est réalisée avant enrobage des poutrelles par du béton. To this end, metal beams are used and these beams are precast by eccentric prestressing applied over all or part of the length of the beams and this prestressing is carried out before coating the beams with concrete.

L'invention comprend aussi toutes les combinaisons possibles de cette nouvelle technicStle avec les techniques connues. The invention also includes all possible combinations of this new technicStle with known techniques.

L'invention est décrite cl-après à l'aide d'un exemple de réalisation pratique en se référant aux figures 10a à 10e. The invention is described below with the aid of a practical example of embodiment with reference to FIGS. 10a to 10e.

tes figures 11 à 23 montrent les combinaisons possibles de l'invention avec les techniques connues. your figures 11 to 23 show the possible combinations of the invention with known techniques.

En se référant à la figure 10a, on met en oeuvre selon l'invention une poutrelle en acier présollicitée par précontrainte excentrée avant enrobage de béton. Referring to FIG. 10a, a steel joist prestressed by eccentric prestressing is implemented according to the invention before concrete coating.

A cet effet, on applique e atelier ou en chantier une pré-sollicitation de compression longitudinale excentrée à une poutrelle métallique - Fig.lOb. To this end, apply in the workshop or on site a pre-stress of longitudinal eccentric compression to a metal beam - Fig.lOb.

Cette poutrelle métallique 1 droite, courbe ou précintrée reçoit avant enrobage une précontrainte excentrée réalisée à l'aide de fils, torons, câbles ou barres de précontrainte - Fig.lOc. This straight, curved or pre-bent metal beam 1 receives, before coating, an eccentric pre-stress produced using wires, strands, cables or pre-stress bars - Fig.lOc.

Par exemple sur la figure 10c, on a représenté une poutrelle métallique 1, laquelle a été sollicitée par des torons de précontrainte 2 tendus sous toute la longueur et attachés aux plats d'arrêt d'extrémité 3, par des torons de précontrainte 4 tendus sur une partie de la longueur et attachés à des cornières d'arrêt intermédiaire 5. For example in FIG. 10c, a metal beam 1 has been shown, which has been stressed by prestressing strands 2 stretched over the entire length and attached to the end stop plates 3, by prestressing strands 4 stretched over part of the length and attached to intermediate stop angles 5.

On peut aussi prévoir des torons de précontrainte tendus sur une partie de la longueur et attachés d'une part à des plats d'arrêt d'extrémité (3) et à des cornières d'arrêt intermédiaire 5. It is also possible to provide prestressing strands stretched over a part of the length and attached on the one hand to end stop plates (3) and to intermediate stop angles 5.

Les figures lOd et 10e sont des vues selon respectivement les coupes A et B dans la figure lOc. Figures lOd and 10e are views respectively according to sections A and B in Figure lOc.

Cette précontrainte est appliquée à n'importe quel endroit sur la longueur de la poutrelle au niveau inférieur de celle-ci. Cette précontrainte excentrée par rapport à l'axe de la poutrelle lui implique donc un moment fléchissant vers le haut et donc une précambrure. This prestressing is applied anywhere along the length of the beam at the lower level thereof. This eccentric prestress with respect to the axis of the beam therefore implies an upward bending moment and therefore a precambrage.

Dans le cas d'utilisation d'une poutre courbe par construction ou d'une poutre précintrée au laminage, la précambrure précitée s'ajoute à ce précintrage. La poutrelle est ensuite enrobée totalement ou partiellement de béton 6 participant à la résistance d'ensemble. In the case of using a curved beam by construction or a pre-bent beam for rolling, the aforementioned pre-camber is added to this pre-bending. The beam is then completely or partially coated with concrete 6 contributing to the overall strength.

Le procédé selon l'invention comprend également que les poutres métalliques sont préf léchies avant enrobage et que toujours avant enrobage elles sont rendues élastiques et libres de contraintes résiduelles par une sollicitation préliminaire constituée d'une préflexion et d'une composante longitudinale excentrée de compression. The method according to the invention also comprises that the metal beams are preflexed before coating and that always before coating they are made elastic and free of residual stresses by a preliminary stress consisting of a preflexion and an eccentric longitudinal component of compression.

L'invention comprend également l'association de la nouvelle technique décrite ci-dessus avec l'une ou plusieurs des techniques connues décrites dans les figures 1 à 9 et plus particulièrement les combinaisons suivantes
I. Figure il Poutrelle en acier précontrainte avant
enrobage - figure lOa et béton armé
figure l II. Figure 12 Poutrelle en acier précontrai-nte avant
enrobage - figure lOa et béton pré
contraint par pré-tension - Figure 4
III. Figure 13 Poutrelle en acier précontrainte avant
enrobage - figure iOa et béton pré
contraint par post-tension - figure 5
IV. Figure 14 Poutrelle en acier précontrainte par
pré-tension - figure 10a et béton
précontraint par pré et post-tensions
figure 6
V.Figure 15 PoutrElles en acier presc > -ontraintesavanrtA
J
enrobage - figure 10 et acier enrobé
préfléchi - Figures 8a et 8b
VI. Figure 16 Poutrelles en acier précontraintesavant
enrobage - figure 10 et acier enrobé
préf léchi et précontraint par post
tension - figures 9a et 9b
VII. Combinaisons VII à XIII - Figures 17 à
23 des diverses combinaisons ci-dessus.The invention also includes the association of the new technique described above with one or more of the known techniques described in Figures 1 to 9 and more particularly the following combinations
I. Figure il Front pre-stressed steel beam
coating - figure lOa and reinforced concrete
figure l II. Figure 12 Front pre-tensioned steel beam
coating - figure lOa and pre concrete
constrained by pre-tension - Figure 4
III. Figure 13 Front prestressed steel beam
coating - figure iOa and pre concrete
constrained by post-tension - figure 5
IV. Figure 14 Steel beam prestressed by
pre-tension - figure 10a and concrete
prestressed by pre and post tension
figure 6
V.Figure 15 Presc steel beams> -ontraintesavanrtA
J
coating - figure 10 and coated steel
pre-thought - Figures 8a and 8b
VI. Figure 16 Preloaded steel beams before
coating - figure 10 and coated steel
pref lashed and prestressed by post
tension - figures 9a and 9b
VII. Combinations VII to XIII - Figures 17 to
23 of the various combinations above.

Légende
O Rond de béton armé
o Fil, toron, câble ou barre de précontrainte Far pr-tension
Fil, toron, câble ou barre de précontralnte par post-tension
Fil, toron, câble ou barre de précontrainte par pr-tension
sur poutrelle acier
Fil, toron, câble ou barre de précontrainte par post-tension
sur poutrelle acier v Preflexion
Il est entendu que l'invention ne se limite pas aux détails et aux combinaisons décrits ci-dessus mais englobe toutes les caractéristiques revendiquees ci-après. Legend
O Reinforced concrete round
o Wire, strand, cable or prestressing bar Far pre-tensioned
Wire, strand, cable or pre-tensioning bar by post-tensioning
Wire, strand, cable or prestressing bar by pretensioning
on steel beam
Wire, strand, cable or post-tensioning bar
on steel beam v Preflexion
It is understood that the invention is not limited to the details and combinations described above, but encompasses all the features claimed below.

Claims (9)

REVENDICATIONS 1. Procédé de réalisation de poutres à haut niveau de performance1. Method for making beams with a high level of performance porté-charge composées de poutrelles en acier et de béton, load-bearing composed of steel beams and concrete, caractérisé en ce que l'on utilise des poutrelles métalliques et que characterized in that metal beams are used and that l'on met ces poutrelles en précambrure par précontrainte excentrée we put these beams in pre-eccentric by prestressed eccentric appliquée sur toute ou partie de la longueur des poutrelles et en ce applied over all or part of the length of the beams and in this que cette précontrainte est réalisée avant enrobage des poutrelles that this prestressing is carried out before coating the beams par du beton. with concrete. 2. Procédé suivant la revendication l, caractérisé en ce que les2. Method according to claim l, characterized in that the poutrelles métalliques peuvent être précintrées. metal beams can be pre-bent. 3. Procédé suivant la revendication 1, caractérisé en ce que les3. Method according to claim 1, characterized in that the poutrelles peuvent être constituées d'âme simple, multiple, évidée, beams can be made of single, multiple, hollow core, rigide ou non. rigid or not. 4. Procédé suivant la revendication 1, caractérisé en ce que le béton4. Method according to claim 1, characterized in that the concrete est muni d'armatures passives sous forme de ronds à béton armé. is fitted with passive reinforcements in the form of reinforced concrete rods. et/ou barres de précontrainte par pré-tension. and / or prestressing bars by pre-tension. est muni d'armatures actives sous forme de fils, torons, câbles has active reinforcements in the form of wires, strands, cables 5. Procédé suivant la revendication 1, caractérisé en ce que le béton 5. Method according to claim 1, characterized in that the concrete 6. Procédé suivant là revendication 1, caractérisé en ce que le béton6. Method according to claim 1, characterized in that the concrete est muni d'armatures actives sous forme de fils, torons, câbles has active reinforcements in the form of wires, strands, cables et/ou barres de précontrainte par post-tension. and / or post-tensioning bars. 7. Procédé selon la revendication 1, caractérisé en ce que les poutres7. Method according to claim 1, characterized in that the beams métalliques sont préfléchies avant enrobage et que toujours avant metal are pre-bent before coating and always before enrobage, elles sont rendues élastiques et libres de contraintes coating, they are made elastic and free of constraints résiduelles par une sollicitation préliminaire constituée d'une residual by a preliminary solicitation consisting of a préNflexion et d'une composante longitudinale excentrée de preflexion and an eccentric longitudinal component of comoression.  comoression. 8. Procédé selon l'une quelconque des revendications 1 à 7 prises8. Method according to any one of claims 1 to 7 taken séparément ou en combinaison. separately or in combination. 9. Poutres composées de poutrelles en acier et de béton obtenues selon9. Beams composed of steel beams and concrete obtained according to le procédé de revendications 1 à 8.  the method of claims 1 to 8.
FR8701016A 1986-01-29 1987-01-28 PROCESS FOR PRODUCING BEAMS COMPOSED OF STEEL AND CONCRETE BEAMS AND BEAMS OBTAINED ACCORDING TO THIS PROCESS. Expired - Fee Related FR2593540B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE0/216200A BE904131A (en) 1986-01-29 1986-01-29 PROCESS FOR PRODUCING BEAMS COMPRISING STEEL AND CONCRETE BEAMS AND BEAMS OBTAINED ACCORDING TO THIS PROCESS.

Publications (2)

Publication Number Publication Date
FR2593540A1 true FR2593540A1 (en) 1987-07-31
FR2593540B1 FR2593540B1 (en) 1992-03-20

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FR8701016A Expired - Fee Related FR2593540B1 (en) 1986-01-29 1987-01-28 PROCESS FOR PRODUCING BEAMS COMPOSED OF STEEL AND CONCRETE BEAMS AND BEAMS OBTAINED ACCORDING TO THIS PROCESS.

Country Status (5)

Country Link
BE (1) BE904131A (en)
DE (1) DE3702304A1 (en)
FR (1) FR2593540B1 (en)
LU (1) LU86748A1 (en)
NL (1) NL8700168A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1180176A1 (en) * 1999-05-10 2002-02-20 Interconstec Co., Ltd. Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge
CZ297559B6 (en) * 2004-03-16 2007-02-07 Rojík@Václav Floor concrete beam and process for producing thereof
CN100432348C (en) * 2004-06-14 2008-11-12 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577857A1 (en) * 1992-06-26 1994-01-12 BUCHER, Franz Structural member
DE10259584A1 (en) * 2002-04-04 2004-07-15 Gerhards, Karl, Dipl.-Ing. Manufacturing method for steel flexure beam e.g. for high-speed train track carrier or bridge structure, has pre-stressed base profile combined with plate for completing beam cross-sectional profile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509629A (en) *
LU66694A1 (en) * 1972-01-10 1973-02-19
FR2258503A1 (en) * 1974-01-22 1975-08-18 Mauquoy Jean Baptiste
FR2316403A1 (en) * 1975-06-19 1977-01-28 Lipski Raphael Beam with web embedded in lower flange - composite I section steel beam and prestressed reinforced concrete covering
EP0113650A1 (en) * 1982-12-03 1984-07-18 Preflex S.A. Method of manufacturing a girder with a preflexed or prestressed and/or at the same time preflexed and prestressed rigid reinforcement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1018618A (en) * 1950-02-08 1953-01-09 Composite construction
FR1295131A (en) * 1961-07-13 1962-06-01 Trough-shaped steel beam
FR2417597A1 (en) * 1978-02-20 1979-09-14 Wilenko Leon Composite girder and concrete slab - has girder elastically distorted in opposite direction to load in unloaded state

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE509629A (en) *
LU66694A1 (en) * 1972-01-10 1973-02-19
FR2258503A1 (en) * 1974-01-22 1975-08-18 Mauquoy Jean Baptiste
FR2316403A1 (en) * 1975-06-19 1977-01-28 Lipski Raphael Beam with web embedded in lower flange - composite I section steel beam and prestressed reinforced concrete covering
EP0113650A1 (en) * 1982-12-03 1984-07-18 Preflex S.A. Method of manufacturing a girder with a preflexed or prestressed and/or at the same time preflexed and prestressed rigid reinforcement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1180176A1 (en) * 1999-05-10 2002-02-20 Interconstec Co., Ltd. Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge
EP1180176A4 (en) * 1999-05-10 2005-02-23 Interconstec Co Ltd Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge
CZ297559B6 (en) * 2004-03-16 2007-02-07 Rojík@Václav Floor concrete beam and process for producing thereof
CN100432348C (en) * 2004-06-14 2008-11-12 东洋综合建业株式会社 Prestress mixed beam with concrete plate and corrugate steel web beam

Also Published As

Publication number Publication date
LU86748A1 (en) 1987-06-02
NL8700168A (en) 1987-08-17
DE3702304A1 (en) 1987-07-30
FR2593540B1 (en) 1992-03-20
BE904131A (en) 1986-05-15

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