EP2088244B1 - Pont en béton armé ou pont de construction composite et methode pour sa fabrication - Google Patents

Pont en béton armé ou pont de construction composite et methode pour sa fabrication Download PDF

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Publication number
EP2088244B1
EP2088244B1 EP09001508A EP09001508A EP2088244B1 EP 2088244 B1 EP2088244 B1 EP 2088244B1 EP 09001508 A EP09001508 A EP 09001508A EP 09001508 A EP09001508 A EP 09001508A EP 2088244 B1 EP2088244 B1 EP 2088244B1
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EP
European Patent Office
Prior art keywords
supports
longitudinal
bridge
support grid
transverse
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EP09001508A
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German (de)
English (en)
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EP2088244A1 (fr
Inventor
Victor Schmitt
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SSF INGENIEURE AG
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SSF Ingenieure AG
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Priority to PL09001508T priority Critical patent/PL2088244T3/pl
Publication of EP2088244A1 publication Critical patent/EP2088244A1/fr
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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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
    • E01D21/065—Incremental launching
    • 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
    • E01D2101/268—Composite concrete-metal

Definitions

  • the invention relates to a method for producing a concrete composite bridge for road and rail transport. It comprises longitudinal members extending in the longitudinal direction of the bridge and cross members extending in the transverse direction of the bridge, which are connected to form a supporting grid.
  • the support grate comprises open spaces enclosed by the longitudinal and transverse beams, which are covered with deck plate elements, resulting in a continuous bridge board.
  • the invention also relates to a modular system for creating such a bridge and such a bridge of longitudinal and transverse beams and Fahrbahnplatten instituten itself.
  • bridge constructions are usually custom-made, their design is subject to strong rationalization pressure. Therefore, the proposed constructions are particularly concerned with the most effective use of the materials commonly used in bridge construction concrete and steel, taking advantage of their respective properties and to keep the manufacturing cost of the bridge as low as possible. Above all, the aspects of a favorable production also lead to a high degree of prefabrication of the bridge components in bridge construction. Another important aspect is the desire for the least possible impairment of the bridged traffic route.
  • a competitive construction method for medium bridge spans is the composite bridge construction, in which a composite is produced between the superstructure of a steel structure and complete precast slabs for the carriageway.
  • the US 5,978,997A discloses a composite component with a thin cover portion.
  • the composite member includes a plurality of longitudinally extending beams having a plurality of composite members disposed thereon.
  • a composite member includes a plurality of transverse beams having a cast deck structure thereon.
  • the composite component is a prefabricated composite unit that is mounted and installed on the carriers.
  • the beams are placed on the supports and the cover portion cast in place.
  • the molded cover portion is substantially thinner than in the known structures, but the construction has greater strength.
  • the DE 25 20 105 A1 shows a reinforced concrete element consisting of a broken at least one point plate, the broken plate members are connected together by at least one upwardly projecting coating.
  • the US 3,890,750 relates to a construction having a plurality of horizontally arranged rolling beams and beams on vertical supports forming a plurality of frames and panels.
  • a variety of end-of-line precast beams are supported by and transversely stretched between the beams to provide lateral stability.
  • a series of these beams are connected over the compression straps of the supporting roll supports to form continuous tensile or pressure anchors in the structure.
  • the US 2005/028 39 26 A1 discloses a method of constructing a bridge comprising constructing a concrete slab remote from a bridge, the slab having at least one screw hole on one side, aligning the side of the concrete slab substantially parallel to the side of a beam such that the screw hole of the slab contains a bolt hole in the side of the carrier is aligned, and connecting the screw hole of the concrete slab with the bolt hole of the carrier by angle and bolt.
  • the crossbeams may be dispensed with in order to stabilize the main beams in the assembled state.
  • the precast concrete components required for this type of construction on the one hand with large dimensions and on the other hand with elaborate profiling, make it difficult to create the bridge.
  • the superstructure is initially formed of a steel support grid of main beams with a large double-T cross section and welded cross members between them. On the remaining open spaces of the support grid, which are framed by the carriers, plate elements are installed.
  • the preparation of the steel support grid prepares considerable circumstances. If it is first welded on the construction site of transverse and longitudinal members, then a great deal of effort is required to achieve the required quality of both the welds and the corrosion protection. If, on the other hand, it is made in the factory, a considerable amount of material is created Effort through the transport of the finished support grid on the construction site, which has the dimensions of the future superstructure of the bridge.
  • the object of the invention is therefore to simplify the production of such a bridge from a grid and deck plate elements.
  • the invention proposes a construction method, in which initially also a carrier grid of longitudinal and transverse beams is formed. However, the production of the carrier grate takes place on the construction site.
  • a first step a) the cross members are mounted on the upper sides of the longitudinal members.
  • a second step b) the longitudinal members and the cross members are mounted by potting to a support grid. Casting is suitable for use on cement, which does not have to be specially compacted.
  • the step c) the plate elements are positioned on the open spaces of the support grid in a further step d).
  • the plate elements are fastened to one another and to the support grid by substantially adding in-situ concrete between the plate elements.
  • the invention thus turns away from components that have the same size in two directions, such as. B. a complete grid or large prefabricated panels. Rather, she succeeds in producing the superstructure of easily transportable carriers and plate elements with relatively small but always the same dimensions. Both the carrier and in particular the plate elements can be prefabricated as finished parts. Due to their essentially identical dimensions, their production can be very economical.
  • the support grid also required according to the invention is not created in a weather-sensitive and complex welding process that requires thorough corrosion protection, but by a potting, preferably cement-based. This technology is generally well-controlled even in adverse weather conditions.
  • connection of the longitudinal and transverse beams at the nodes of the support grid by encapsulation therefore allows the creation of the support grate only on the site. This means that no large and bulky components have to be brought to the construction site at considerable expense for transport and traffic safety. Therefore, this construction method offers a significant cost advantage. Because it makes it possible, if necessary, to prefabricate all essential parts of the system, so in particular the longitudinal and transverse beams and the carriageway slab elements as a kit with relatively handy dimensions modular. Already the production in smaller dimensions reduces costs, facilitating the transport of smaller components anyway. Only at the construction site, the parts are connected. Because the prefabricated parts are interconnected by potting, eliminating complex formwork and can be avoided in particular the known weather-related disadvantages of welding.
  • the support grid is created only on the site, the longitudinal beams are spent in a mounting position of the method in a first implementation of the method before mounting the support grid.
  • the longitudinal members as the largest components can therefore directly are mounted on the abutments after their delivery at the construction site, so that they will learn in the following no significant changes in location. All the following components of the bridge have significantly smaller dimensions and are therefore easy to position and assemble. Longitudinal beams of larger spans can also be installed using the incremental launching method.
  • the support grid of longitudinal and transverse beams is created outside its installation position and only then spent in its installed position.
  • the support grid can be made, for example on an abutment side at ground level and thus with the elimination of fall protection. This procedure allows only the assembly of the longitudinal and transverse beams at their junctions by potting because it can be made in high quality on the construction site.
  • the finished support grid receives a high bending stiffness, so that it can be moved after curing of the potting in its installation or end position.
  • the support grid of a longer bridge superstructure of individual grate sections can be formed, which are inserted, for example, in the clock shift method in the end position.
  • bridge superstructures with intermediate columns or pillars and medium spans can be produced up to about 50 meters according to the inventive principle.
  • welding and corrosion protection work may be required to connect steel side members.
  • they can be carried out in high quality, though on the construction site. Because especially in the clock sliding method, they can always take place at the same place, for example, at a mounting location on an abutment. They can therefore be executed in the protection of a temporary housing largely independent of weather conditions.
  • the cross members are mounted in step a) during assembly of the support grid on the tops of the longitudinal parts.
  • the transverse support elements of the carrier grid according to the invention are therefore not interrupted by the longitudinal members, but can be installed and mounted in one piece.
  • the support grid is divided into two levels, namely on the one hand, the level of the side members and on the other hand, the overlying level of the cross member.
  • the continuous course of the cross member over the entire bridge width allows easy and cost-effective coupling of the longitudinal and transverse beams at their coupling points through the potting.
  • the cross member in step b) in the assembly of the support grid at their contact surfaces on the longitudinal members with a mortar should be very fluid, require no compaction, not shrink and be of high strength. Suitable mortars are marketed under the name " Pagel® " and are plastic modified. Due to their high flowability they fill the space between the longitudinal and cross member completely to achieve the fullest possible contact between the two carriers. Since the mortar does not disappear, the full-surface bearing remains even after its curing. As a result, stress peaks on the contact surfaces can be avoided and cracks in the carriers can be prevented.
  • the lower casting can be prepared by first framing the contact surface on the top of the longitudinal member with glued-on elastomer strips before laying the cross member on the longitudinal members.
  • the elastomer strips serve on the one hand as seals between longitudinal and transverse beams for the subsequent sub-casting.
  • they provide suitable bearing surfaces of the cross member on the longitudinal members in the assembled state.
  • the sealing strip may be missing or interrupted at a bridge longitudinal or transverse upper edge of the support surface in order to allow air to escape and to preclude cavitation in the region of the lower casting.
  • the elastomer strips already loaded in the assembled state by the cross member and compressed and fixed by the sub-casting in this state, they can remain after hardening of the base on the support grid. Because of their load condition, there is no danger that they get out of joint, for example due to aging, and impair the visual impression of the building.
  • in-situ concrete is applied to a height of the upper edge of the cross member after connecting the longitudinal and transverse beams in step b) on top of the longitudinal beams.
  • the remaining free sides of the longitudinal members between the cross members are thus filled with a first Ortbetoner contemplatung to the level of the tops of the cross member.
  • the first in-situ concrete supplement provides an intermediate bond and creates a flat surface on the support grid on which the panel elements can be laid.
  • the first addition of in-situ concrete increases the rigidity of the carrier grid, in particular that of the longitudinal members.
  • shuttering elements which have been lost on the upper sides of the longitudinal members and in their longitudinal direction are fastened after connecting the carriers to a carrier grid in step b).
  • shuttering elements for example, prefabricated fiberglass concrete elements can be used, which are attached as an L-profile or with an L-profile on top of the longitudinal member.
  • prefabricated fiberglass concrete elements can be used, which are attached as an L-profile or with an L-profile on top of the longitudinal member.
  • the plate elements After filling the lost formwork and the production of the intermediate composite by curing the first in-situ concrete supplement can be started with the assembly of the plate elements on the support grid. So as soon as the supplemented first in-situ concrete has hardened sufficiently, the plate elements can be laid on the support grid. According to a further advantageous embodiment of the inventive method they are adjusted prior to attachment in step d) in particular their height relative to the cross members. Since the plate elements are located in a plane above the plane determined by the cross member, the plate elements need only against each other and not with respect to fixed fixed points such. B. to be aligned with the cross member. Due to the exact adjustment of the altitude of the plate elements to each other a largely flat surface of the bridge panel can be generated, which makes subsequent compensation work unnecessary and facilitates the subsequent application of a road surface and cheaper.
  • the support grid is characterized by recesses between the plate elements.
  • Prefabricated reinforcement elements are installed in these recesses and another, second Ortbetoner practicalung filled. It is applied in the transverse direction over the cross members and in the bridge longitudinal direction via a first Ortbetoner hybridung on the side rails. Through this second Ortbetoner nativeung the plate elements are permanently attached to the support grid.
  • prefabricated reinforcing elements are mounted in the recesses between the plate elements. The reinforcement elements are bristled both with those from the first Ortbetoner penetrateung as well as with the plate elements on all sides laterally protruding terminal reinforcements.
  • a joint strip is applied, for. B. a plaster grid ("Gittex"). With the introduction of the second Ortbetoner suchung the surface of the bridge board is closed.
  • the object of the invention is also achieved by a modular system for creating a concrete composite bridge, the side members, which extend in the installed state in the longitudinal direction of the bridge, and cross members which are mounted transversely to the longitudinal members and over the bridge width continuously and at nodes on the Upper sides of the longitudinal beams are rigidly coupled to a support grid, comprises, and the Fahrbahnplattenimplantation which are mounted on free surfaces of the support grid, which surround the carrier.
  • the invention provides as it were a modular system of prefabricated longitudinal, transverse beams and deck plate elements available from the bridge with little effort and the usual on a construction site equipment, skills and knowledge can be built.
  • the basic components of this system have dimensions that allow their transport to the site relatively inexpensive.
  • the longitudinal member may be made of all common materials, in particular prestressed concrete or steel.
  • the side member made of steel, because it is very economical to produce for bridges with medium spans.
  • the longitudinal member has a T-profile, a U-profile or a closed, airtight welded box section.
  • This low-maintenance carriers can be used, which can be checked well from the outside.
  • T-beams they make an optically light impression and are often used in multi-level slab beams.
  • U-shaped and beam with box profile however, have a particularly high load capacity and are mainly used in two-tier tiled beams.
  • the longitudinal and transverse beams are mounted to a support grid as the central support element of the bridge superstructure.
  • the coupling of the carrier at the nodes of the support grid consists of a cement-based potting. It may be a plastic-modified grouting concrete, for example the company PAGEL ® , or a self-compacting concrete.
  • This coupling technology is generally well controlled on the construction site and is largely weather-independent. It allows the grate to be placed on the jobsite can be made so that only his relatively easily transportable individual components and not he himself must be transported to the construction site with great effort.
  • the compound of the longitudinal and transverse beams by encapsulation is thus an essential feature that requires the simplicity of processing of the inventive system.
  • the cross member at the nodes on openings for the potting are favorably designed as rectangular and oriented in the support longitudinal direction Vergusstaschen, the limiting side walls open conically upwards.
  • the side surfaces of the Vergusstaschen are profiled.
  • the openings are arranged at those locations where the cross member come to lie on the longitudinal members in the installed state. So they break through the bearing surface of the cross member at the nodes. In the installed position so that only one top remains open as a filling opening for the potting, while the Vergusstaschen are otherwise formed by the four side surfaces in the cross member and down through the top of the longitudinal member.
  • Coupling elements protrude from the upper side of the longitudinal member into the encapsulating pockets, so that the encapsulation establishes a non-positive bond between the coupling elements and the side surfaces of the encapsulating pockets.
  • the material of the cross member is almost arbitrary. Steel and concrete are particularly suitable for this.
  • the cross member made of concrete, because they are so particularly economical to produce in large numbers as standardized precast.
  • the casings with their profiled side surfaces are particularly easy to produce.
  • a cement-based grouting also ensures a good bond between the grout and the material of the cross members.
  • the cross member are biased centric. This further increases their stability and load-bearing capacity. Their production in large numbers in the Spannbett is familiar from the production of sleepers for the railway superstructure.
  • prefabricated formwork elements are provided for this, whose length is tuned to the cross member spacing in the support grid and the height of the cross member height. They also have fastening means with which they can be attached to the edges of the tops of the side members as a permanent formwork. On the one hand, this achieves, in particular, a visually high quality of the visible surfaces of the in-situ concrete supplement and, on the other hand, considerably reduces the cost of formwork.
  • This first Ortbetoner hybridung receives also a longitudinal and transverse reinforcement.
  • the system comprises prefabricated reinforcement collar, which only have to be used on the construction site between the formwork elements. This also reduces the assembly work on the construction site. Because the reinforcing collars can be prefabricated in the factory, they usually also have a higher quality. As in a later stage of construction on the first Ortbetoner hybridung a second is applied, which is also reinforced, the prefabricated reinforcing collar may already have corresponding connection iron for connection to the reinforcement of the second Ortbetoner hybridung.
  • the road slab elements are mounted on the support grid.
  • they have already been produced in the factory as standardized prefabricated panels, which gives them in particular a high surface quality and uniformity. As shuttering costs for their production on the construction site are eliminated, they enable a rapid construction progress. They are supported on the top of the support grid.
  • the plate elements for a central region of the support grid on all four of its narrow sides support elements or a connection reinforcement have for it.
  • they have at least on their three narrow sides a connection reinforcement. With her, they tie into the second in-situ concrete supplement, with which they are reliably fixed to each other and on the support grid.
  • a finished concrete composite bridge with a bridge board which was constructed from the above-described system. It therefore comprises a carrier grid extending in the longitudinal direction of the bridge longitudinal beams and transverse thereto and over the entire bridge width extending cross member.
  • the cross members are mounted on top of the side members so that they are in a different plane than the side members.
  • the carriers enclose open spaces in the carrier grid on which carriage plate elements are fastened in a further, third plane.
  • At least the side members and the cross members are connected by a cement-based potting.
  • the plate elements may be secured by a potting or Ortbetoner impartung on the support grid.
  • the composite bridge can be produced thereby particularly economically. It can or its components can be further developed in the sense of the above-described embodiments of the building system. In particular, their grid can consist of individual sections, which were created for example in the clock shift method and connected to each other on site.
  • FIG. 1 This is already the essential components of the structure to recognize:
  • the bridge is composed of two stretched between abutments or pillars in the longitudinal direction of the bridge longitudinal beams 1 and mounted thereon in the transverse direction cross members 2 together.
  • the longitudinal members 1 and the cross member 2 form after mounting a support grid 3. It comprises two planes, namely a first plane in which the longitudinal members 1, and a second plane in which the cross member 2 extend.
  • the carriers 1, 2 are thus thus in different levels.
  • the support grid 3 is in a further third level by regularly arranged prefabricated panels 4 and introduced therebetween Ortbetoner technology 5 connected to a bridge board.
  • the inventive bridge is thus constructed in the manner of a modular system of side rails 1, cross members 2 and precast panels 4, each claiming its own level.
  • the connection of these components with each other takes place in several steps essentially by two Ortbetoner hybridmaschine 5, 22.
  • the installation using in-situ concrete allows a particularly simple method of manufacture, because its processing is manageable and familiar on the site
  • FIGS. 2a and 2b show cross sections of a finished state of two different design options.
  • FIG. 2a comprises the support grid 3 three parallel side by side longitudinal beams 1 with double T-profile to form a multi-layer panel beam. They have to each other and the edge of the bridge to a nearly identical distance and represent a first plane.
  • the cross member 2 are fixed in the length of the bridge width in a second level.
  • the prefabricated panels 4 are arranged, which cover the open spaces of the support grid 3. Because of the same distance between the side members 1 with each other and the edge of the bridge all precast panels 4 have identical dimensions.
  • FIG. 2b shows a variant of this construction. It differs on the one hand by the hollow box sections of the longitudinal members 1 '. They are used in two-tier tiled beams. With the same bridge width as in FIG. 2a only two side members 1 'are provided. This has the consequence that the support grid 3 'in a central region in which in FIG. 2a a middle side member 1 extends, has no support. For the same cross members 2, which also extend over the entire bridge width, thus resulting between the two side rails 1 'larger open spaces of the support grid 3. Accordingly, in a central region of the bridge larger prefabricated panels 4' mounted as at their edges. The prefabricated panels 4, 4 'are fastened with Ortbetoner pros Institute 5 as in the above example. The rest of the bridge construction corresponds to that of the above example.
  • FIG. 3 shows the support grid in a pre-assembly state.
  • three cross member 2 are placed in a uniform center distance A of about five meters.
  • head bolt dowels 8 are welded in an average density.
  • formwork elements 14 are attached along their edges. They consist of fiberglass concrete and are already attached to the longitudinal beams 1 in the factory. You ask one lost formwork for a later first Ortbetoner penetrateung is between the formwork elements 14 after installation of the cross member 2 reinforcing baskets 18 are mounted as prefabricated reinforcing elements.
  • In order to provide sufficient space for the tops 11 of the side members 1 are about 1.2 meters wide.
  • FIG. 4b A sectional view through a side member 1 in the cross member-free area shows FIG. 4b ,
  • the formwork elements 14 are fastened by means of a welded on the top 11 L-profile 16 on the longitudinal member 1. They are about 30 cm high and thus correspond in height to the cross members 2 so that they are flush with their top 17.
  • the reinforcing baskets 18 are pre-assembled for a first Ortbetoner practicalung, the connecting iron 19 for the second Ortbetoner hybridung 5 have.
  • the cross members 2 consist of centric prestressed concrete and are about one meter wide and 30 cm high. They point at junctions 15 of the carriers 1, 2 ( FIG. 3 ) rectangular recesses 9 of about 30 cm on 100 cm side length, protrude into the head bolt dowels 8.
  • the cross member 2 is not directly on the side member 1 'on. Its support or contact surface 13 on the longitudinal member 1 'is framed by an elastomer strip 10, which is about 20 mm wide. It bounds the rectangular support surface 13 of the cross member 2 on the longitudinal member 1.
  • the cross member 2 is located with a small distance of about 20 mm relative to the longitudinal member 1 '. Because the area covered by the cross member 2 on the side member 1 'and bounded by the elastomer strip 10 is larger than that of the recess 9, an annular gap 12 is created between the cross member 2 and the side member 1'. It is essentially accessible through the recess 9. Only on the directly accessible through the recess 9 region of the covered by the cross member 2 on the longitudinal member 1 supporting surface 13, the head bolt dowels 8 are welded, in higher density than in the remaining area.
  • the support grid 3 is so far preassembled that now its components, namely the side members 1, 1 'and the cross member 2, can be connected to each other.
  • each cross member 2 is poured through the recess 9 in the annular gap 12 at its bearing surface on the longitudinal beam 1 with a highly flowable and self-compacting, plastic-modified mortar 20 in a layer thickness of about 30 mm.
  • the uppermost elastomer strip 10 in the inclined bridge longitudinal direction can be interrupted or omitted.
  • the air can escape from the annular gap 12 in order to ensure a uniform and full support of the cross member 2 on the longitudinal member 1.
  • the finished sub-casting with the mortar 20 is about 10 mm into the recess 9 inside.
  • the remaining space of the recess 9 is then filled with self-compacting concrete 21 of concrete class C 45/55.
  • the first Ortbetoner impartung 22 in the free areas on the top 11 introduced between the cross members 2. Since the concrete supplement 22 on the longitudinal beams 1 takes place up to the height of the upper edge 17 of the cross member 2, the support grid 3 is replaced by a substantially planar surface with intervening open spaces 23. This condition shows FIG. 5 ,
  • the free surfaces 23 of the support grid 3 are then covered with the precast panels 4 (see FIG. 6 ). They all have an identical degree, which is why they can be economically produced as standardized finished parts.
  • the dimensions of the prefabricated panels 4 correspond essentially to the dimensions of the open spaces 23 of the support grid 3. They are supported by cross members 24 on the cross members 2 from.
  • connection reinforcement 27 At least at the equipped with trusses 24 side surfaces 25 of the prefabricated panels 4 protruding rebar as connection reinforcement 27 out.
  • the connection reinforcements 27 adjacent precast panels 4 overlap on the cross member 2 and are supplemented by a longitudinal reinforcement 28. It is not preassembled so as not to complicate the adjustment of the prefabricated panels 4.
  • a gap 29 can form between them, can emerge at the subsequent concreting Betonschlempe.
  • the joint 29 is closed with a sealing joint strip 30, for example a flush-mounted grid.
  • a similar joint 31 is formed in those areas in which the prefabricated panels 4 connect to the longitudinal beams 1, ie at its extending in the bridge direction longitudinal edge 32.
  • the gap 24 between the formwork elements 14 and the longitudinal side 30 of the precast panel 4. It is also sealed with a joint strip 30 so that no concrete vapors can escape.

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Claims (13)

  1. Procédé pour la fabrication d'un pont hybride en béton, avec des supports longitudinaux (1) s'étendant dans le sens longitudinal du pont, avec des supports transversaux (2) s'étendant dans le sens transversal du pont, lesquels sont reliés en une grille de support (3) comprenant des surfaces libres (23) délimitées par les supports longitudinaux (1) et les supports transversaux (2), et avec des éléments de plaques de voie de circulation (4) fixés aux surfaces libres (23) de la grille de support (3), comprenant les étapes suivantes :
    a) Montage des supports transversaux (2) sur les faces supérieures (11) des supports longitudinaux (1)
    b) Assemblage des supports longitudinaux (1) et des supports transversaux (2) pour former la grille de support (3) par une masse de scellement (21),
    c) Durcissement de la masse de scellement (21)
    d) Après le durcissement de la masse de scellement, positionnement des éléments de plaques (4) sur les surfaces libres (23),
    e) Fixation des éléments de plaques (4) sur la grille de support (3) par ajout de béton coulé (5).
  2. Procédé selon la revendication 1, caractérisé en ce que la grille de support (3) est construite hors de sa position de montage, puis installée dans sa position de montage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce du béton coulé (22) est appliqué sur la face supérieure (11) des supports longitudinaux (1), jusqu'à une hauteur de la face supérieure (17) des supports transversaux (2).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'à l'étape b), les supports transversaux (2) sont coulés avec du mortier sur les supports longitudinaux (1), sur leurs surfaces de contact (13).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'à l'étape b), suite à l'assemblage des supports (1 ; 2) pour former une grille de support (3) et suite au montage des éléments de plaques (4), des éléments d'armature (18) préfabriqués sont montés sur les faces supérieures (11 ; 17) des supports (1 ; 2).
  6. Système modulaire pour la réalisation d'un pont hybride en béton, avec des supports longitudinaux (1) s'étendant dans le sens longitudinal du pont à l'état monté, et avec des supports transversaux (2) s'étendant transversalement à ceux-ci et en continu dans la largeur du pont, lesquels peuvent être accouplés en des points nodaux (15) sur les faces supérieures (11) des supports longitudinaux (1), au moyen d'une masse de scellement à base de ciment (21), de manière à être rigides en flexion par rapport une grille de support (3), et avec des éléments de plaques de voie de circulation (4) destinés à être montés sur les surfaces libres (23) de la grille de support (3) qui sont délimitées par les supports (1 ; 2).
  7. Système modulaire selon la revendication 6, caractérisé en ce que des supports transversaux (2) avec des interruptions (9) sur les points nodaux (15).
  8. Système modulaire selon la revendication 6 ou 7, caractérisé en ce que les supports transversaux (2) sont conçus en béton.
  9. Système modulaire selon la revendication précédente, caractérisé en ce que les supports transversaux (2) sont précontraints, en particulier de façon centrée.
  10. Système modulaire selon l'une des revendications 6 à 9, avec des raccords pour armature de cisaillement (8) agencés sur la face supérieure (11) des supports longitudinaux (1), caractérisé en ce que des régions exemptes de raccords (12) et des régions avec une plus forte concentration de raccords sont formées sur les futurs points nodaux (15), sur des surfaces d'appui (13) pour les supports transversaux (2) sur le support longitudinal (1).
  11. Système modulaire selon l'une des revendications 6 à 10, caractérisé par des éléments de coffrage préfabriqués (14) d'une longueur déterminée en fonction de l'espacement (A) entre les supports transversaux (2) dans la grille de support (3), et d'une hauteur déterminée en fonction de la hauteur (H) des supports transversaux (2).
  12. Système modulaire selon l'une des revendications 6 à 11, caractérisé par des éléments de plaques de voie de circulation (4) avec une armature de connexion (17) agencée au moins sur trois côtés, et avec des éléments d'appui (24) faisant saillie sur des bords latéraux (25) opposés des éléments (4).
  13. Pont hybride en béton, réalisé à partir d'un système selon la revendication 6, avec un tablier de pont comprenant une grille de support (3) constituée de supports longitudinaux (1) s'étendant dans le sens longitudinal du pont, avec des supports transversaux (2) s'étendant transversalement à ceux-ci et sur toute la largeur du pont, avec des surfaces libres (23) délimitées par ceux-ci et avec des éléments de plaques de voie de circulation (4) préfabriqués, agencés sur les surfaces libres (23), dans lequel au moins les supports longitudinaux (1) et les supports transversaux (2) sont reliés entre eux par une masse de scellement (21).
EP09001508A 2008-02-05 2009-02-04 Pont en béton armé ou pont de construction composite et methode pour sa fabrication Active EP2088244B1 (fr)

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