EP0085608A1 - Method and means for constructing a bridge superstructure and the like structures, and resulting structures - Google Patents

Method and means for constructing a bridge superstructure and the like structures, and resulting structures Download PDF

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Publication number
EP0085608A1
EP0085608A1 EP83400168A EP83400168A EP0085608A1 EP 0085608 A1 EP0085608 A1 EP 0085608A1 EP 83400168 A EP83400168 A EP 83400168A EP 83400168 A EP83400168 A EP 83400168A EP 0085608 A1 EP0085608 A1 EP 0085608A1
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EP
European Patent Office
Prior art keywords
concrete
segments
mixed
segment
slab
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Granted
Application number
EP83400168A
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German (de)
French (fr)
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EP0085608B1 (en
Inventor
Pierre Richard
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Bouygues SA
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Bouygues SA
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Priority to AT83400168T priority Critical patent/ATE14905T1/en
Publication of EP0085608A1 publication Critical patent/EP0085608A1/en
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    • 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
    • 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
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • 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

Definitions

  • the invention relates to a bridge deck or similar structure, deck segments and a method for the construction of a bridge span comprising such a deck.
  • bridge deck any structure which covers a certain extent and which is only supported in certain places such as a bridge deck, a floor or a building cover.
  • this bridge deck or similar structure is characterized in that it is made up of segments assembled step by step, these segments comprising suites of mixed steel-concrete segments each comprising a steel structural steel integral with an upper concrete slab, said suites of mixed segments being separated by concrete intermediate segments, all of the segments being stiffened by prestressing cables which pass through the metal frames and are fixed at their ends to the concrete segments.
  • the term "voussoir” denotes a repetitive cross section of the deck, this section extending on the one hand over the entire width of the deck and, on the other hand, over only a fraction of the length of the deck.
  • longitudinal (e)” and “transverse (e) will be used with reference to the deck, that is to say respectively denote a line or plane which extends in the length of the deck and a line or a plan that spans the width of the deck.
  • the invention also relates to a preferred mixed segment to constitute the deck, this segment comprising an upper concrete slab supported by a metal frame, the metal frame comprising prefabricated assembly parts distributed in a surface adjusted at the intersections of longitudinal lines, of transverse lines and diagonal lines, the longitudinal lines and the transverse lines being in said adjusted surface and the diagonal lines connecting this surface to the upper concrete slab, the metal frame comprising profiles arranged along said lines and welded together and / or to said assembly parts.
  • FIG. 1 A typical example of a mixed segment according to the invention is shown diagrammatically in FIG. 1.
  • This segment includes an upper concrete table 1 carried by a three-dimensional metal frame 2.
  • the metal frame is made up of profiles and assembly parts.
  • the profiles are arranged, on the one hand, in a virtual regulated surface 3 along longitudinal lines 4 and transverse lines 5 and, on the other hand, along diagonal lines 6 connecting the lower surface 3 to the upper table 1.
  • the profiles arranged along diagonal lines or "oblique" profiles are found in virtual planes 7 which are alternately tilted to the left, and tilted to the right.
  • the profiles have not been shown but only the lines along which they are arranged; in addition, only the diagonal or oblique section lines 6 of the foreground 7 bent to the left and of the foreground 7 bent to the right of the left end of the segment are shown, but it will be understood that the other inclined planes include similar oblique profiles.
  • Lines 8 have no particular meaning and have been shown only for clarity of the drawing.
  • the frame of the segment comprises eight connecting pieces A to H shown diagrammatically by circles in FIG. 1.
  • Each connecting piece is a knot where a longitudinal section L, one or two transverse sections T, two sections meet and are assembled oblique P l , p 2 inclined to the left and two oblique sections P 1 , P 2 inclined to the right.
  • the assembly parts are in the set area 3.
  • FIGS. 2 and 3 An assembly part has been shown in detail in FIGS. 2 and 3. This is for example part B.
  • the assembly piece comprises a front plate 9 to be pressed against a plate or a corresponding face of the adjacent segment and which is provided with holes 10 for the passage of fixing bolts of the two segments, and / or means 11 for the relative positioning two segments and / or holes 12 for the free passage of prestressing cables.
  • the positioning means 11 preferably comprise nipple / drilling pairs, the nipple of a plate penetrating into the bore of the adjacent plate and taking up the shearing forces.
  • the assembly part has, behind the front plate 9, inclined faces 13 against which abut perpendicularly and are welded the ends of some of the oblique profiles.
  • the oblique profiles comprise, on the one hand, P profiles, arranged obliquely in a vertical plane (which is the plane of the front face or of the rear face of the segment) and, on the other hand, P profiles 2 directed obliquely towards regions such as S (FIG. 1) situated substantially in the middle of the underside of the upper slab.
  • the oblique profiles P 2 are welded to the surfaces 13 while the oblique profiles P 1 are welded to the plates 9 and to the oblique profiles P 2 (FIG. 3).
  • the connecting piece r has horizontal faces 14,15 between which are placed the ends of the sections L arranged along the longitudinal lines and to which these ends are welded.
  • the profiles L arranged along the longitudinal lines are H profiles and the profiles T arranged along the transverse lines are welded to the wings of the H profiles in the region of the assembly parts. More specifically, the profiles T arranged along the transverse lines consist of two angles 16,17 welded to a flat 18 disposed between the angles and itself welded to the profile in H ( Figure 2).
  • the assembly parts are molded parts, at least some of which include a vertical front plate 9 and, on the back of this wall, a horizontal lower plate 19 and a horizontal upper plate 20 which has two wedge-shaped wings ( Figures 2 and 3).
  • each oblique profile fixed to the concrete slab by a device which allows to separate at will the profile of the slab.
  • This device will be described below with reference to the oblique sections P 1 of the transverse vertical planes.
  • this device comprises (FIGS. 1, 4 and 5) a plate 21 situated in the zone S 'of the concrete of the upper slab 1 and a plate 22 situated outside this concrete, welded at the upper end of an oblique H-shaped profile and pressing flat against an oblique surface 23 formed on the underside of the concrete slab 1, these two plates being traversed by a threaded rod 24 held by nuts 25 and 26 on either side of the plates 21 and 22, one of the nuts being located inside the concrete while that the other nut is outside the concrete and accessible from below the slab.
  • the threaded rods with said nuts constitute high strength bolts.
  • a metal sheath 27 is fixed by welding to the upper plate 21 to isolate the rod 24 from the concrete of the upper slab during the pouring of this concrete.
  • Concrete segments do not include the metal frame of mixed segments but they include means for positioning and fixing the mixed segments adjacent to concrete segments. These means are, for example, bolt rods or suitable plates fixed to the concrete segments to guide and receive for fixing the adjacent assembly parts of the metal frames of the mixed segments. On the other hand, the concrete segments have means for anchoring the ends of prestressing cables which pass through the frames of the mixed segments.
  • FIG. 7 is a diagram of a span of a bridge in accordance with the invention. It has been assumed, for the example, that this span comprises eight mixed segments V M between two concrete segments V B , the whole being stiffened by prestressing cables C anchored in the concrete segments and passing through the perforations 12 of transverse plates of assembly parts.
  • the invention is not limited to the embodiments which have been described and it does not depart from the scope of the invention by replacing the technical means described by equivalents.
  • it is planned to replace, if desired, the unit sections with double sections, in particular to split the longitudinal sections, which makes it possible to modify the location of the holes for passage of the longitudinal prestressing cables.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

This invention relates to a production of a structure by means of arch stones. The arch stones comprise series of mixed steel-concrete arch stones (VM), each comprising a metal frame of steel integral with an upper concrete slab, these series being separated by interposed concrete arch stones or sections, (VB), the assembly of the arch stones being reinforced longitudinally by prestress cables which penetrate the metal frames and are attached at their ends to the concrete arch stones. This invention may be applied to bridge floors and similar structures.

Description

L'invention concerne un tablier de pont ou structure analogue, des voussoirs de tablier et un procédé pour la construction d'une travée de pont comportant un tel tablier.The invention relates to a bridge deck or similar structure, deck segments and a method for the construction of a bridge span comprising such a deck.

Par structure analogue ou un tablier de pont, on désigne toute structure qui couvre une certaine étendue et qui n'est supportée qu'à certains endroits comme un tablier de pont, un plancher ou une couverture de bâtiment.By analogous structure or a bridge deck, is meant any structure which covers a certain extent and which is only supported in certain places such as a bridge deck, a floor or a building cover.

Selon l'invention, ce tablier de pont ou structure analogue est caractérisé en ce qu'il est constitué de voussoirs assemblés de proche en proche, ces voussoirs comprenant des suites de voussoirs mixtes acier-béton comportant chacun une charpente métallique en acier solidaire d'une dalle supérieure en béton, lesdites suites de voussoirs mixtes étant séparées par des voussoirs intercalaires en béton, l'ensemble des voussoirs étant raidi par des câbles de précontrainte qui traversent les charpentes métalliques et sont fixés à leurs extrémités aux voussoirs en béton.According to the invention, this bridge deck or similar structure is characterized in that it is made up of segments assembled step by step, these segments comprising suites of mixed steel-concrete segments each comprising a steel structural steel integral with an upper concrete slab, said suites of mixed segments being separated by concrete intermediate segments, all of the segments being stiffened by prestressing cables which pass through the metal frames and are fixed at their ends to the concrete segments.

Par le terme "voussoir", on désigne une section transversale répétitive du tablier, cette section s'étendant d'une part sur toute la largeur du tablier et, d'autre part, sur une fraction seulement de la longueur du tablier. Par la suite, les expressions "longitudinal (e)" et "transversal(e) seront utilisées par référence au tablier, c'est-à-dire désigneront respectivement une ligne ou plan qui s'étend dans la longueur du tablier et une ligne ou un plan qui s'étend dans la largeur du tablier.The term "voussoir" denotes a repetitive cross section of the deck, this section extending on the one hand over the entire width of the deck and, on the other hand, over only a fraction of the length of the deck. Thereafter, the expressions "longitudinal (e)" and "transverse (e) will be used with reference to the deck, that is to say respectively denote a line or plane which extends in the length of the deck and a line or a plan that spans the width of the deck.

L'invention concerne également un voussoir mixte préféré pour constituer le tablier, ce voussoir comprenant une dalle supérieure en béton supportée par une charpente métallique, la charpente métallique comprenant des pièces d'assemblage préfabriquées réparties dans une surface réglée aux intersections de lignes longitudinales, de lignes transversales et de lignes diagonales, les lignes longitudinales et les lignes transversales se trouvant dans ladite surface réglée et les lignes diagonales reliant cette surface à la dalle supérieure en béton, la charpente métallique comprenant des profilés disposés suivant lesdites lignes et soudés entre eux et/ou auxdites pièces d'assemblage.The invention also relates to a preferred mixed segment to constitute the deck, this segment comprising an upper concrete slab supported by a metal frame, the metal frame comprising prefabricated assembly parts distributed in a surface adjusted at the intersections of longitudinal lines, of transverse lines and diagonal lines, the longitudinal lines and the transverse lines being in said adjusted surface and the diagonal lines connecting this surface to the upper concrete slab, the metal frame comprising profiles arranged along said lines and welded together and / or to said assembly parts.

On décrira ci-après un exemple de voussoir et de tablier conforme à l'invention en référence aux figures du dessin joint dont certaines sont essentiellement des schémas alors que d'autres sont déjà des vues de détail, les vues étant limitées à ce qui est nécessaire à l'homme de métier pour la compréhension de l'invention.An example of a segment and an apron according to the invention will be described below with reference to the figures of the attached drawing, some of which are essentially diagrams while others are already detailed views, the views being limited to what is necessary for the skilled person to understand the invention.

Sur les figures :

  • - la figure 1 est une perspective schématique d'un voussoir ;
  • - la figure 2 est une vue frontale d'une pièce d'assemblage de la charpente métallique d'un voussoir mixte conforme à l'invention, le plan de vue étant un plan vertical transversal ;
  • - la figure 3 est une coupe de la pièce d'assemblage suivant le plan III-III de la figure 2 ;
  • - la figure 4 est une fraction d'une vue du voussoir dans un plan vertical transversal, montrant deux pièces d'assemblage de la charpente et les profilés obliques du plan vertical qui aboutissent à ces pièces ;
  • - la figure 5 est un schéma d'un dispositif de fixation d'un profilé oblique de la charpente métallique à.la dalle supérieure du voussoir ;
  • - la figure 6 est une vue par en-dessous de la dalle de béton du voussoir dans la région où aboutissent des profilés obliques de la charpente métallique ;
  • - la figure 7 est un schéma d'une travée d'un pont comportant un voussoir conforme à la présente invention; et
  • - la figure 8 est u n schéma relatif au procédé de fabrication de la travée de pont.
In the figures:
  • - Figure 1 is a schematic perspective of a segment;
  • - Figure 2 is a front view of an assembly part of the metal frame of a mixed segment according to the invention, the view plane being a transverse vertical plane;
  • - Figure 3 is a section of the assembly part along the plane III-III of Figure 2;
  • - Figure 4 is a fraction of a view of the segment in a transverse vertical plane, showing two assembly parts of the frame and the oblique profiles of the vertical plane which lead to these parts;
  • - Figure 5 is a diagram of a device for fixing an oblique section of the metal frame to the upper slab of the segment;
  • - Figure 6 is a view from below of the concrete slab of the segment in the region where end oblique sections of the metal frame;
  • - Figure 7 is a diagram of a span of a bridge comprising a segment according to the present invention; and
  • - Figure 8 is a diagram relating to the manufacturing process of the bridge span.

Un exemple type de voussoir mixte conforme à l'invention est représenté schématiquement sur la figure 1.A typical example of a mixed segment according to the invention is shown diagrammatically in FIG. 1.

Ce voussoir comprend une table supérieure 1 en béton portée par une charpente métallique tridimensionnelle 2. La charpente métallique est constituée de profilés et de pièces d'assemblage.This segment includes an upper concrete table 1 carried by a three-dimensional metal frame 2. The metal frame is made up of profiles and assembly parts.

Les profilés sont disposés, d'une part, dans une surface réglée virtuelle 3 suivant des lignes longitudinales 4 et des lignes transversales 5 et, d'autre part, suivant des lignes diagonales 6 reliant la surface inférieure 3 à la table supérieure 1. Les profilés disposés suivant des lignes diagonales ou profilés "obliques" se trouvent dans des plans virtuels 7 qui sont alternativement penché vers la gauche, et penché vers la droite. Sur la figure 1, pour la clarté de la figure, on n'a pas représenté les profilés mais seulement les lignes selon lesquelles ils sont disposés ; de plus, on n'a représenté que les lignes diagonales ou profilés obliques 6 du premier plan 7 penché vers la gauche et du premier plan 7 penché vers la droite de l'extrémité gauche du voussoir mais on comprendra que les autres plans penchés comportent des profilés obliques similaires. Les lignes 8 n'ont pas de signification particulière et n'ont été représentées que pour la clarté du dessin.The profiles are arranged, on the one hand, in a virtual regulated surface 3 along longitudinal lines 4 and transverse lines 5 and, on the other hand, along diagonal lines 6 connecting the lower surface 3 to the upper table 1. The profiles arranged along diagonal lines or "oblique" profiles are found in virtual planes 7 which are alternately tilted to the left, and tilted to the right. In Figure 1, for clarity of the figure, the profiles have not been shown but only the lines along which they are arranged; in addition, only the diagonal or oblique section lines 6 of the foreground 7 bent to the left and of the foreground 7 bent to the right of the left end of the segment are shown, but it will be understood that the other inclined planes include similar oblique profiles. Lines 8 have no particular meaning and have been shown only for clarity of the drawing.

La charpente du voussoir comprend huit pièces d'assemblage A à H schématisées par des cercles sur la figure 1. Chaque pièce d'assemblage est un noeud où se rencontrent et sont assemblés un profilé longitudinale L, un ou deux profilés transversaux T, deux profilés obliques Pl,p 2 inclinés vers la gauche et deux profilés obliques P1,P2 inclinés vers la droite.The frame of the segment comprises eight connecting pieces A to H shown diagrammatically by circles in FIG. 1. Each connecting piece is a knot where a longitudinal section L, one or two transverse sections T, two sections meet and are assembled oblique P l , p 2 inclined to the left and two oblique sections P 1 , P 2 inclined to the right.

Les pièces d'assemblage se trouvent dans la surface réglée 3.The assembly parts are in the set area 3.

Une pièce d'assemblage a été représentée en détails sur les figures 2 et 3. Il s'agit par exemple de la pièce B.An assembly part has been shown in detail in FIGS. 2 and 3. This is for example part B.

La pièce d'assemblage comporte une platine frontale 9 à plaquer contre une platine ou une face correspondante du voussoir adjacent et qui est pourvue de trous 10 pour le passage de boulons de fixation des deux voussoirs, et/ou de moyens 11 pour le positionnement relatif des deux voussoirs et/ou de trous 12 pour le passage libre de câbles de précontrainte. Les moyens de positionnement 11 comprennent de préférence des couples téton/ perçage, le téton d'une platine pénétrant dans le perçage de la platine adjacente et reprenant les efforts de cisaillement. La pièce d'assemblage présente, derrière la platine frontale 9,des faces inclinées 13 contre lesquelles viennent buter perpendiculairement et sont soudées les extrémités de certains des profilés obliques.The assembly piece comprises a front plate 9 to be pressed against a plate or a corresponding face of the adjacent segment and which is provided with holes 10 for the passage of fixing bolts of the two segments, and / or means 11 for the relative positioning two segments and / or holes 12 for the free passage of prestressing cables. The positioning means 11 preferably comprise nipple / drilling pairs, the nipple of a plate penetrating into the bore of the adjacent plate and taking up the shearing forces. The assembly part has, behind the front plate 9, inclined faces 13 against which abut perpendicularly and are welded the ends of some of the oblique profiles.

De fait, les profilés obliques comprennent, d'une part, des profilés P, disposés obliquement dans un plan vertical (qui est le plan de la face avant ou de la face arrière du voussoir) et, d'autre part, des profilés P2 dirigés obliquement vers des régions telles que S (figure 1) situées sensiblement au milieu de la sous-face de la dalle supérieure.In fact, the oblique profiles comprise, on the one hand, P profiles, arranged obliquely in a vertical plane (which is the plane of the front face or of the rear face of the segment) and, on the other hand, P profiles 2 directed obliquely towards regions such as S (FIG. 1) situated substantially in the middle of the underside of the upper slab.

Les profilés obliques P2 sont soudés aux surfaces 13 tandis que les profilés obliques P1 sont soudés aux platines 9 et aux profilés obliques P2 (figure 3).The oblique profiles P 2 are welded to the surfaces 13 while the oblique profiles P 1 are welded to the plates 9 and to the oblique profiles P 2 (FIG. 3).

La pièce d'assemblagerprésente des faces horizontales 14,15 entre lesquelles sont placées les extrémités des profilés L disposés suivant les lignes longitudinales et auxquelles sont soudéees ces extrémités.The connecting piece r has horizontal faces 14,15 between which are placed the ends of the sections L arranged along the longitudinal lines and to which these ends are welded.

Dans l'exemple représenté, les profilés L disposés suivant les lignes longitudinales sont des profilés en H et les profilés T disposés suivant les lignes transversales sont soudés aux ailes des profilés en H dans la région des pièces d'assemblage. Plus précisément, les profilés T disposés suivant les lignes transversales sont constitués par deux cornières 16,17 soudées à un plat 18 disposé entre les cornières et lui-même soudé au profilé en H (figure 2).In the example shown, the profiles L arranged along the longitudinal lines are H profiles and the profiles T arranged along the transverse lines are welded to the wings of the H profiles in the region of the assembly parts. More specifically, the profiles T arranged along the transverse lines consist of two angles 16,17 welded to a flat 18 disposed between the angles and itself welded to the profile in H (Figure 2).

De préférence, les pièces d'assemblage sont des pièces moulées dont certaines au moins comportent une platine frontale verticale 9 et, au dos de cette paroi, une platine inférieure horizontale 19 et une platine supérieure horizontale 20 qui présente deux ailes en forme de coin (figures 2 et 3).Preferably, the assembly parts are molded parts, at least some of which include a vertical front plate 9 and, on the back of this wall, a horizontal lower plate 19 and a horizontal upper plate 20 which has two wedge-shaped wings ( Figures 2 and 3).

Suivant une particularité de l'invention, chaque profilé obliqueiest fixé à la dalle en béton par un dispositif qui permet de désolidariser à volonté le profilé de la dalle. On décrira ci-après ce dispositif en référence aux profilés obliques P1 des plans verticaux transversaux.According to a feature of the invention, each oblique profile fixed to the concrete slab by a device which allows to separate at will the profile of the slab. This device will be described below with reference to the oblique sections P 1 of the transverse vertical planes.

Dans un exemple, ce dispositif comprend (figures 1, 4 et 5) une platine 21 située dans la zone S' du béton de la dalle supérieure 1 et une platine 22 située à l'extérieur de ce béton, soudée à l'extrémité supérieure d'un profilé oblique en H et en appui à plat contre une surface oblique 23 formée à la sous-face de la dalle de béton 1, ces deux platines étant traversées par une tige filetée 24 tenue par des écrous 25 et 26 de part et d'autre des platines 21 et 22, l'un des écrous étant situé à l'intérieur du béton tandis que l'autre écrou est extérieur au béton et accessible depuis le dessous de la dalle.In one example, this device comprises (FIGS. 1, 4 and 5) a plate 21 situated in the zone S 'of the concrete of the upper slab 1 and a plate 22 situated outside this concrete, welded at the upper end of an oblique H-shaped profile and pressing flat against an oblique surface 23 formed on the underside of the concrete slab 1, these two plates being traversed by a threaded rod 24 held by nuts 25 and 26 on either side of the plates 21 and 22, one of the nuts being located inside the concrete while that the other nut is outside the concrete and accessible from below the slab.

Les tiges filetées avec lesdits écrous constituent des boulons haute résistance.The threaded rods with said nuts constitute high strength bolts.

Une gaine métallique 27 est fixée par soudage à la platine supérieure 21 pour isoler la tige 24 du béton de la dalle supérieure pendant le coulage de ce béton.A metal sheath 27 is fixed by welding to the upper plate 21 to isolate the rod 24 from the concrete of the upper slab during the pouring of this concrete.

L'invention n'est évidemment pas limitée aux moyens de réalisation qui ont été décrits à titre d'exemple uniquement.The invention is obviously not limited to the embodiments which have been described by way of example only.

Des moyens analogues sont utilisés pour la fixation des profilés obliques P2 en H aux zones médianes S de la sous-face de la dalle en béton (figures 1 et 6).Similar means are used for fixing the oblique profiles P 2 in H to the middle zones S of the underside of the concrete slab (Figures 1 and 6).

Les voussoirs en béton ne comportent pas la charpente métallique des voussoirs mixtes mais ils comportent des moyens pour positionner et fixer les voussoirs mixtes adjacents aux voussoirs en béton. Ces moyens sont par exemple des tiges de boulon ou de platines adéquates fixées aux voussoirs en béton pour guider et recevoir à fixation les pièces d'assemblage adjacentes des charpentes métalliques des voussoirs mixtes. D'autre part, les voussoirs en béton comportent des moyens pour ancrer les extrémités dès câbles de précontrainte qui traversent les charpentes des voussoirs mixtes.Concrete segments do not include the metal frame of mixed segments but they include means for positioning and fixing the mixed segments adjacent to concrete segments. These means are, for example, bolt rods or suitable plates fixed to the concrete segments to guide and receive for fixing the adjacent assembly parts of the metal frames of the mixed segments. On the other hand, the concrete segments have means for anchoring the ends of prestressing cables which pass through the frames of the mixed segments.

Un ouvrage comportant un tablier ou une structure analogue conforme à l'invention repose sur des appuis qui sont normalement situés au droit des voussoirs en béton et la figure 7 est un schéma d'une travée d'un pont conforme à l'invention. On a supposé, pour l'exemple, que cette travée comporte huit voussoirs mixtes VM entre deux voussoirs en béton VB, l'ensemble étant raidi par des câbles de précontrainte C ancrés dans les voussoirs en béton et passant dans les perforations 12 des platines transversales des pièces d'assemblage.A structure comprising an apron or a similar structure in accordance with the invention rests on supports which are normally located in line with the concrete segments and FIG. 7 is a diagram of a span of a bridge in accordance with the invention. It has been assumed, for the example, that this span comprises eight mixed segments V M between two concrete segments V B , the whole being stiffened by prestressing cables C anchored in the concrete segments and passing through the perforations 12 of transverse plates of assembly parts.

Pour réaliser une travée courant d'un tel ouvrage, on peut utiliser, selon l'invention, un procédé qui comporte (figure 8), sur un banc de préfabrication, la fabrication de l'un des voussoirs en béton VB de la travée, la fabrication du voussoir mixte adjacent V de la travée à partir de la face adjacente 28 du voussoir en béton de façon à conjuguer parfaitement les dalles supérieures du voussoir en béton et de ce voussoir mixte, la fabrication de chacun des autres voussoirs mixtes de la travée en partant chaque fois de la face latérale adjacente d'un voussoir mixte déjà fabriqué pour fabriquer le voussoir mixte suivant de façon à conjuguer parfaitement les dalles supérieures et les charpentes métalliques des voussoirs mixtes adjacents, et la fabrication du second voussoir en béton de la travée à partir du dernier voussoir mixte de la travée de façon à conjuguer parfaitement la dalle en béton du dernier voussoir mixte et la dalle en béton du second voussoir en béton, le transport individuel des voussoirs préfabriqués à leurs positions de service dans la travée et l'assemblage des voussoirs mixtes et des deux voussoirs en béton entre lesquels ils sont placés par des câbles de précontrainte traversant les charpentes métalliques des Voussoirs mixtes et ancrés à leurs extrémités dans les voussoirs en béton.To make a current span of such a structure, it is possible to use, according to the invention, a method which comprises (FIG. 8), on a prefabrication bench, the manufacture of one of the concrete segments V B of the span , the manufacturing of the segment adjacent mixed V of the span from the adjacent face 28 of the concrete segment so as to perfectly combine the upper slabs of the concrete segment and of this mixed segment, the manufacture of each of the other mixed segments of the span starting each time of the adjacent side face of a mixed segment already manufactured to manufacture the following mixed segment so as to perfectly combine the upper slabs and the metal frames of the adjacent mixed segments, and the manufacture of the second concrete segment of the span from the last mixed segment of the span so as to perfectly combine the concrete slab of the last mixed segment and the concrete slab of the second concrete segment, the individual transport of the prefabricated segments to their service positions in the span and the assembly of the mixed segments and of the two concrete segments between which they are placed by prestressing cables crossing the metal structures d es Mixed segments, anchored at their ends in concrete segments.

L'invention n'est pas limitée aux réalisations qui ont été décrites et on ne sort pas du cadre de l'invention en remplaçant les moyens techniques décrits par des équivalents. Par exemple, il est prévu de remplacer, si on le désire, les profilés unitaires par des profilés doubles, notamment de dédoubler les profilés longitudinaux, ce qui permet de modifier l'emplacement des trous de passage des câbles de précontrainte longitudinale.The invention is not limited to the embodiments which have been described and it does not depart from the scope of the invention by replacing the technical means described by equivalents. For example, it is planned to replace, if desired, the unit sections with double sections, in particular to split the longitudinal sections, which makes it possible to modify the location of the holes for passage of the longitudinal prestressing cables.

Claims (17)

1- .Tablier de pont ou structure analogue, caractérisé en ce qu'il est constitué de voussoirs assemblés de proche en proche, ces voussoirs comprenant des suites de voussoirs mixtes acier-béton comportant chacun une charpente métallique en acier solidaire d'une dalle supérieure en béton, lesdites suites de voussoirs mixtes étant séparées par des voussoirs intercalaires en béton, l'ensemble des voussoirs étant raidi par des câbles de précontrainte qui traversent les charpentes métalliques et sont fixés à leurs extrémités aux voussoirs en béton.1-. Bridge deck or similar structure, characterized in that it is made up of segments assembled step by step, these segments comprising suites of mixed steel-concrete segments each comprising a metal steel frame integral with an upper slab in concrete, said suites of mixed segments being separated by concrete intermediate segments, all of the segments being stiffened by prestressing cables which pass through the metal frames and are fixed at their ends to the concrete segments. 2.. Voussoir mixte préfabriqué, pour la réalisation d'un tablier ou d'une structure analogue selon la revendication 1, qui comprend une dalle supérieure en béton supportée par une charpente métallique, caractérisé en ce que la charpente métallique comprend des pièces d'assemblage préfabriquées réparties dans une surface réglée aux intersections de lignes longitudinales, de lignes transversales et de lignes diagonales, les lignes longitudinales et les lignes transversales se trouvant dans ladite surface réglée et les lignes diagonales reliant cette surface à la dalle supérieure en béton, la charpente métallique comprenant des profilés disposés suivant lesdites lignes et soudés entre eux et/ou auxdites pièces d'assemblage.2 .. Prefabricated mixed segment, for the production of an apron or similar structure according to claim 1, which comprises an upper concrete slab supported by a metal frame, characterized in that the metal frame comprises pieces of prefabricated assembly distributed in a surface set at the intersections of longitudinal lines, transverse lines and diagonal lines, the longitudinal lines and the transverse lines being in said regulated surface and the diagonal lines connecting this surface to the upper concrete slab, the frame metallic comprising profiles arranged along said lines and welded together and / or to said assembly parts. 3. Voussoir mixte selon la revendication 2, caractérisé en ce que certaines au moins des pièces d'assemblage comportent une platine frontale à plaquer contre une platine ou une face correspondante du voussoir adjacent et qui est pourvue de trous pour le passage de boulons de fixation des deux voussoirs et/ou de moyens pour le positionnement relatif des deux voussoirs et/ou de trous pour le passage libre de câbles de précontrainte.3. mixed segment according to claim 2, characterized in that at least some of the assembly parts comprise a front plate to be pressed against a plate or a corresponding face of the adjacent segment and which is provided with holes for the passage of fixing bolts two segments and / or means for the relative positioning of the two segments and / or holes for the free passage of prestressing cables. 4. Voussoir mixte selon la revendication 3, caractérisé en ce que les moyens de positionnement comprennent des couples téton/perçage, le téton d'une platine pénétrant dans le perçage de la platine adjacente et reprenant les efforts de cisaillement.4. Mixed segment according to claim 3, characterized in that the positioning means comprise nipple / drilling pairs, the nipple of a plate penetrating into the bore of the adjacent plate and taking up the shearing forces. 5. Voussoir mixte selon la revendication 2, caractérisé en ce que les pièces d'assemblage présentent des faces inclinées contre lesquelles viennent buter perpendiculairement et sont soudées les extrémités de certains des profilés disposés suivant lesdites lignes diagonales.5. mixed segment according to claim 2, characterized in that the assembly parts have inclined faces against which abut perpendicularly and are welded the ends of some of the profiles arranged along said diagonal lines. 6. Voussoir mixte selon l'une des revendications 2 à 5, caractérisé en ce que les pièces d'assemblage présentent des faces horizontales entre lesquelles sont placées les extrémités des profilés disposés suivant les lignes longitudinales et auxquelles sont soudées ces extrémités.6. Mixed segment according to one of claims 2 to 5, characterized in that the assembly parts have horizontal faces between which are placed the ends of the sections arranged along the longitudinal lines and to which these ends are welded. 7. Voussoir mixte selon l'une des revendications 2 à 6, caractérisé en ce que les pièces d'assemblage sont des pièces moulées.7. Mixed segment according to one of claims 2 to 6, characterized in that the assembly parts are molded parts. 8. Voussoir mixte selon la revendication 7, caractérisé en ce que certaines au moins des pièces d'assemblage comportent une platine frontale verticale et, au dos de cette paroi, une platine inférieure horizontale et une platine supérieure horizontale qui présente deux ailes en forme de coin.8. Mixed segment according to claim 7, characterized in that at least some of the assembly parts comprise a vertical front plate and, on the back of this wall, a horizontal lower plate and a horizontal upper plate which has two wings in the form of corner. 9. Voussoir mixte selon l'une des revendications 2 à 8, caractérisé en ce que les profilés disposés suivant les lignes longitudinales sont des profilés en H et en ce que les profilés disposés suivant les lignes transversales sont soudés aux ailes des profilés en H dans la région des pièces d'assemblage.9. Mixed segment according to one of claims 2 to 8, characterized in that the profiles arranged along the longitudinal lines are H-profiles and in that the profiles arranged along the transverse lines are welded to the wings of the H-profiles in the region of the assembly parts. 10. Voussoir mixte selon la revendication 9, caractérisé en ce que les profilés disposés suivant les lignes transversales sont constitués par deux cornières soudées à un plat disposé entre les cornières et lui-même soudé au profilé en H.10. Mixed segment according to claim 9, characterized in that the profiles arranged along the transverse lines consist of two angles welded to a flat disposed between the angles and itself welded to the H profile. 11. Voussoir mixte selon l'une des revendications 2 à 10, caractérisé en ce que chaque profilé disposé suivant une ligne diagonale est fixé à la dalle en béton par un dispositif qui permet de désolidariser à volonté le profilé de la dalle.11. Mixed segment according to one of claims 2 to 10, characterized in that each section arranged along a diagonal line is fixed to the concrete slab by a device which allows to separate at will the profile of the slab. 12. Voussoir mixte selon la revendication 11, caractérisé er ce que ledit dispositif comprend deux platines métalliques reliées par des tiges filetées, l'une des platines ou platine supérieure étant située dans le béton de la dalle supérieure et l'autre platine ou platine inférieure étant située à l'extérieur du béton de la dalle et solidaire du profilé, ladite platine inférieure étpnt fixée aux tiges par des écrous accessibles depuis le dessous de la dalle.12. Mixed segment according to claim 11, characterized in that said device comprises two metal plates connected by threaded rods, one of the plates or upper plate being located in the concrete of the upper slab and the other plate or lower plate being located outside the concrete of the slab and integral with the profile, said lower plate is fixed to the rods by nuts accessible from the below the slab. 13. Voussoir selon la revendication 12, caractérisé en ce que lesdites tiges filetées avec lesdits écrous constituent des boulons haute-résistance.13. Segment according to claim 12, characterized in that said threaded rods with said nuts constitute high-strength bolts. 14. Voussoir mixte selon la revendication 12 ou 13, caractérisé en ce que des gaines métalliques fixées par soudage à la platine supérieure isolent du béton lesdites tiges.14. Mixed segment according to claim 12 or 13, characterized in that metal sheaths fixed by welding to the upper plate isolate said rods from concrete. 15. Voussoir mixte selon l'une des revendications 11 à 14, caractérisé en ce que les extrémités supérieures des profilés en diagonale sont munies de platines d'appui qui leur sont soudées et qui s'appuient à plat contre des surfaces obliques de la sous-face de la dalle supérieure en béton.15. Mixed segment according to one of claims 11 to 14, characterized in that the upper ends of the diagonal profiles are provided with support plates which are welded to them and which bear flat against oblique surfaces of the sub -face of the upper concrete slab. 16. Ouvrage comportant un tablier ou structure analogue selon la revendication 1 ou des voussoirs selon l'une des revendications 2 à 15, caractérisé en ce qu'il repose sur des appuis situés au droit des voussoirs en béton.16. A work comprising an apron or similar structure according to claim 1 or segments according to one of claims 2 to 15, characterized in that it rests on supports located at the right of the concrete segments. 17. Procédé pour la construction d'une travée d'un ouvrage selon la revendication 16, caractérisé en ce qu'il comporte, sur un banc de préfabrication, la fabrication de l'un des voussoirs en béton de la travée, la fabrication du voussoir mixte adjacent de la travée à partir de la face adjacente du voussoir en béton de façon à conjuguer parfaitement les dalles supérieures du voussoir en béton et de ce voussoir mixte, la fabrication de chacun des autres voussoirs mixtes de la travée en partant chaque fois de la face latérale adjacente d'un voussoir mixte déjà fabriqué pour fabriquer le voussoir mixte suivant de façon à conjuguer parfaitement les dalles supérieures et les charpentes métalliques des voussoirs mixtes, et la fabrication du second voussoir en béton de la travée à partir du dernier voussoir mixte de la travée de façon à conjuguer parfaitement la dalle en béton du dernier voussoir mixte et la dalle en béton du second voussoir en béton, le transport individuel des voussoirs préfabriqués à leurs positions de service dans la travée et l'assemblage des voussoirs mixtes et des deux voussoirs en béton entre lesquels ils sont placés par des câbles de précontrainte traversant les charpentes métalliques des voussoirs mixtes et ancrés à leurs extrémités dans les voussoirs en béton.17. A method for constructing a span of a structure according to claim 16, characterized in that it comprises, on a prefabrication bench, the manufacture of one of the concrete segments of the span, the manufacture of mixed segment adjacent to the span from the adjacent face of the concrete segment so as to perfectly combine the upper slabs of the concrete segment and this mixed segment, the manufacture of each of the other mixed segments of the span starting each time the adjacent side face of a mixed segment already manufactured to manufacture the following mixed segment so as to perfectly combine the upper slabs and the metal frames of the mixed segments, and the manufacture of the second concrete segment of the span from the last mixed segment of the span so as to perfectly combine the concrete slab of the last mixed segment and the concrete slab of the second concrete segment, individual transport of the segments preferably sheltered at their service positions in the span and assembly of the mixed segments and the two concrete segments between which they are placed by prestressing cables crossing the metal frames of the mixed segments and anchored at their ends in the concrete segments.
EP83400168A 1982-01-29 1983-01-25 Method and means for constructing a bridge superstructure and the like structures, and resulting structures Expired EP0085608B1 (en)

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AT83400168T ATE14905T1 (en) 1982-01-29 1983-01-25 METHOD AND DEVICE FOR BUILDING A BRIDGE SURFACE AND SIMILAR STRUCTURES, AND STRUCTURES BUILT IN THIS WAY.

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FR8201439 1982-01-29
FR8201439A FR2520777A1 (en) 1982-01-29 1982-01-29 METHOD AND DEVICES FOR REALIZING A BRIDGE APRON AND SIMILAR STRUCTURES, AND ARTICLES OBTAINED

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FR2520777B1 (en) 1985-03-15
JPH0358003B2 (en) 1991-09-04
US4589157A (en) 1986-05-20
JPS58181907A (en) 1983-10-24
ATE14905T1 (en) 1985-08-15
CA1200059A (en) 1986-02-04
EP0085608B1 (en) 1985-08-14
FR2520777A1 (en) 1983-08-05
DE3360535D1 (en) 1985-09-19

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