LU86748A1 - PROCESS FOR PRODUCING BEAMS COMPRISING STEEL AND CONCRETE BEAMS AND BEAMS OBTAINED ACCORDING TO THIS PROCESS - Google Patents
PROCESS FOR PRODUCING BEAMS COMPRISING STEEL AND CONCRETE BEAMS AND BEAMS OBTAINED ACCORDING TO THIS PROCESS Download PDFInfo
- Publication number
- LU86748A1 LU86748A1 LU86748A LU86748A LU86748A1 LU 86748 A1 LU86748 A1 LU 86748A1 LU 86748 A LU86748 A LU 86748A LU 86748 A LU86748 A LU 86748A LU 86748 A1 LU86748 A1 LU 86748A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- beams
- concrete
- steel
- prestressing
- bent
- Prior art date
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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
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)
- Reinforcement Elements For Buildings (AREA)
- Joining Of Building Structures In Genera (AREA)
- Bridges Or Land Bridges (AREA)
Description
à /at /
La présente invention se rapporte à la réalisation de poutres en béton et acier précontraint destinées à être utilisées comme tabliers de pont, planchers de bâtiments et en général pour tous ouvrages de génie 5 civil.The present invention relates to the production 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, préfléchi ainsi que les combinaisons possibles sont représentées dans les dessins annexés par les figures 1 à 10 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 15 pré-tension ; - Figure 5 une poutre en béton précontraint par post-tension ; - Figure 6 une poutre en béton précontraint par pré et post-tensions ; 20 - 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 25 préfléchi et précontraint par post-tension.The known techniques of reinforced concrete, prestressed by pre-tension, prestressed by post-tension, pre-bent as well as the possible combinations are represented in the drawings annexed by Figures 1 to 10 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 15 pre-tension; - Figure 5 a concrete beam prestressed by post-tensioning; - Figure 6 a pre-stressed and post-tensioned concrete beam; 20 - 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 25 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 très grandes en utili-30 sant 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 heavy loads for very large spans using a construction height and therefore a minimum space requirement.
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 35 longueur des poutrelles et cette précontrainte est i 2 réalisée avant enrobage des poutrelles par du béton.For this purpose, 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 technique avec les techniques connues.The invention also includes all the possible combinations of this new technique with known techniques.
5 . L'invention est décrite ci-après à l'aide d'un exemple de réalisation pratique en se référant aux ^ figures 10a à 10e.5. The invention is described below with the aid of a practical example of embodiment with reference to FIGS. 10a to 10e.
Les figures 11 à 23 montrent les combinaisons possibles de l'invention avec les techniques connues.Figures 11 to 23 show the possible combinations of the invention with known techniques.
10 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, use is made according to the invention of a pre-stressed steel beam by eccentric prestressing before coating of concrete.
A cet effet, on applique en atelier ou en 15 chantier une pré-sollicitation de compression longitudinale. excentrée à une poutrelle métallique - Fig.10b.To this end, a longitudinal compression pre-stress is applied in the workshop or on site. offset to a metal beam - Fig.10b.
Cette poutrelle métallique 1 droite, courbe ou précintrée reçoit avant enrobage une précontrainte excentrée réalisée à l'aide de fils, torons, câbles 20 ou barres de précontrainte - Fig.10c.This straight, curved or pre-bent metal beam 1 receives, before coating, an eccentric pre-stress produced using wires, strands, cables 20 or pre-stress bars - Fig. 10c.
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, 25 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, 25 by prestressed strands 4 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 30 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 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 10c.Figures 10d and 10e are views along sections A and B respectively in Figure 10c.
Cette précontrainte est appliquée à n'importe 35 quel endroit sur la longueur de la poutrelle au niveau 3 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 prestress is applied at any point along the length of the beam at the lower level 3 thereof. This eccentric prestress with respect to the axis of the beam therefore involves an upward bending moment and therefore a precambrage.
5 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 prëcintrage. La poutrelle est ensuite enrobée totalement ou partiellement de béton 6 participant à la résistance d'ensemble. 10 Le procédé selon l'invention comprend égale ment que les poutres métalliques sont préfléchies avant enrobage et que toujours avant enrobage elles sont rendues élastiques et libres de contraintes résiduelles par une sollicitation préliminaire constituée d'une 15 préflexion et d'une composante longitudinale excentrée de compression.5 In the case of using a curved beam by construction or a pre-bent beam in rolling, the aforementioned pre-beam is added to this pre-bending. The beam is then completely or partially coated with concrete 6 contributing to the overall strength. The method according to the invention also comprises that the metal beams are pre-bent 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 20 figures 1 à 9 et plus particulièrement |Les combinaisons suivantes : I. Figure 11 Poutrelle en acier précontrainte avant .enrobage - figure 10a et béton armé -figure 1 25 II. Figure 12 Poutrelle en acier précontrainte avant enrobage - figure 10a et béton précontraint par pré-tension - Figure 4 III. Figure 13 Poutrelle en acier précontrainte avant enrobage - figure 10a et béton pré-30 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 35 V. Figure 15 Poutrelles en acier précontraintes avant 4 / .The invention also includes the association of the new technique described above with one or more of the known techniques described in FIGS. 1 to 9 and more particularly The following combinations: I. FIG. 11 Pre-stressed steel beam .coating - figure 10a and reinforced concrete - figure 1 25 II. Figure 12 Pre-stressed steel beam before coating - Figure 10a and prestressed concrete - Figure 4 III. Figure 13 Pre-stressed steel beam before coating - Figure 10a and pre-30 concrete stressed by post-tensioning - Figure 5 IV. Figure 14 Pre-stressed pre-tensioned steel beam - Figure 10a and pre-stressed and pre-stressed concrete - Figure 6 35 V. Figure 15 Front pre-stressed steel beams 4 /.
enrobage - figure 10 et acier enrobe prêfléchi - Figures 8a et 8b VI. Figure 16 Poutrelles en acier précontraintesavant enrobage - figure 10 et acier.enrobé 5 préfléc.hi et précontraint par post tension - figures 9a et 9b VII. Combinaisons VII à XIII - Figures 17 à 23 des diverses combinaisons ci-dessus.coating - Figure 10 and steel pre-bent coating - Figures 8a and 8b VI. Figure 16 Pre-stressed steel beams before coating - Figure 10 and coated steel 5 pre-tensioned and pre-stressed by post tension - Figures 9a and 9b VII. Combinations VII to XIII - Figures 17 to 23 of the various combinations above.
10 Légende o Rond de béton armé e Fil, toron, câble ou barre de précontrainte par pré-tension 15 © Fil, toron, câble ou barre de précontrainte par post-tension ^ Fil, toron, câble ou barre de précontrainte par pré-tension sur poutrelle acier φ Fil, toron, câble ou barre de précontrainte par post-tension sur poutrelle acier 20 ψ Préflexion10 Legend o Reinforced concrete round e Wire, strand, cable or prestressing bar by pre-tension 15 © Wire, strand, cable or prestressing bar by post-tension ^ Wire, strand, cable or prestressing bar by pre-tension on steel beam φ Wire, strand, cable or post-tensioning bar by post-tension on steel beam 20 ψ Pre-bending
Il est entendu que l’invention ne se limite pas aux détails et aux combinaisons décrits ci-dessus mais englobe toutes les caractéristiques revendiquées ci-après.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)
Applications Claiming Priority (2)
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. |
BE216200 | 1986-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
LU86748A1 true LU86748A1 (en) | 1987-06-02 |
Family
ID=3843987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LU86748A LU86748A1 (en) | 1986-01-29 | 1987-01-28 | PROCESS FOR PRODUCING BEAMS COMPRISING 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) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0577857A1 (en) * | 1992-06-26 | 1994-01-12 | BUCHER, Franz | Structural member |
KR100380637B1 (en) * | 1999-05-10 | 2003-04-16 | 주식회사 인터컨스텍 | Prestressed concrete girder of adjustable load bearing capacity for bridge and adjustment method for load bearing capacity of bridge |
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 |
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE509629A (en) * | ||||
FR1018618A (en) * | 1950-02-08 | 1953-01-09 | Composite construction | |
FR1295131A (en) * | 1961-07-13 | 1962-06-01 | Trough-shaped steel beam | |
BE777891A (en) * | 1972-01-10 | 1972-05-02 | Lipski Raphael | PRE-TIRED RIGID REINFORCEMENT BEAM. |
BE810043A (en) * | 1974-01-22 | 1974-05-16 | PROCEDURE FOR PRE-STRESSING AND COUNTER-REFLECTION OF MIXED STEEL AND CONCRETE BEAMS. | |
LU72779A1 (en) * | 1975-06-19 | 1977-03-04 | ||
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 |
DE3362958D1 (en) * | 1982-12-03 | 1986-05-15 | Preflex Sa | Method of manufacturing a girder with a preflexed or prestressed and/or at the same time preflexed and prestressed rigid reinforcement |
-
1986
- 1986-01-29 BE BE0/216200A patent/BE904131A/en not_active IP Right Cessation
-
1987
- 1987-01-23 NL NL8700168A patent/NL8700168A/en not_active Application Discontinuation
- 1987-01-27 DE DE19873702304 patent/DE3702304A1/en not_active Withdrawn
- 1987-01-28 LU LU86748A patent/LU86748A1/en unknown
- 1987-01-28 FR FR8701016A patent/FR2593540B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NL8700168A (en) | 1987-08-17 |
FR2593540A1 (en) | 1987-07-31 |
BE904131A (en) | 1986-05-15 |
FR2593540B1 (en) | 1992-03-20 |
DE3702304A1 (en) | 1987-07-30 |
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