EP3327200B1 - Poutre de pont préfabriquée - Google Patents

Poutre de pont préfabriquée Download PDF

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Publication number
EP3327200B1
EP3327200B1 EP16460090.0A EP16460090A EP3327200B1 EP 3327200 B1 EP3327200 B1 EP 3327200B1 EP 16460090 A EP16460090 A EP 16460090A EP 3327200 B1 EP3327200 B1 EP 3327200B1
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EP
European Patent Office
Prior art keywords
bar
web
steel
zone
reinforced concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP16460090.0A
Other languages
German (de)
English (en)
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EP3327200A1 (fr
Inventor
Witold Kosecki
Wojciech Lorenc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Europrojekt Gdansk SA
Vistal Gdynia SA
Original Assignee
Europrojekt Gdansk SA
Vistal Gdynia SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Europrojekt Gdansk SA, Vistal Gdynia SA filed Critical Europrojekt Gdansk SA
Priority to PL16460090T priority Critical patent/PL3327200T3/pl
Priority to EP16460090.0A priority patent/EP3327200B1/fr
Publication of EP3327200A1 publication Critical patent/EP3327200A1/fr
Application granted granted Critical
Publication of EP3327200B1 publication Critical patent/EP3327200B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • 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
    • E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • E04C3/294—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete of concrete combined with a girder-like structure extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders

Definitions

  • the invention relates to a prefabricated bridge girder in the form of a horizontal or diagonal steel beam comprising, in particular, a bridge span and transferring loads to main supports in the form of walls or columns.
  • bridge girders are typically made in the form of bearing trusses or beams, for example in the form of I-beams on which a reinforced concrete slab is arranged intended to be used by vehicles or intended for rail systems to be laid for railroad vehicles.
  • Girders made of one material are known, for example steel or reinforced concrete but also made of various materials, including partially of steel and partially of reinforced concrete.
  • a supporting system comprised of at least two joists and at least one bridging member.
  • the joists as an example, have the form of I-beams the flanges of which are connected by parallel bridge flat bars, in planes parallel to the planes of the webs of the I-beams.
  • the flat bars contain coupling holes.
  • a support panel has the form of a beam comprising a steel I-beam fitted on both sides of a web with platforms made of reinforcing members attached to the web of the I-beam.
  • the triangular platforms comprise a top platform substantially parallel to the plane of the top flange of the I-beam and a bottom support platform connected with it resting on the bottom flange of the I-beam.
  • the joints of the platforms on both sides of the web of the I-beam are connected by longitudinal reinforcing members, parallel to the I-beam.
  • the whole is filled with concrete, forming a panel with a top working plane.
  • a number of panels can be connected by side longitudinal edges into a single working plane.
  • the base of the girder is a steel section in the form of an I-beam.
  • longitudinal flat bars are fixed in planes parallel to the plane of the I-beam web.
  • the composite girder with a bottom stiffening slab and an upper concrete slab can be prepared.
  • Such a combination of steel-concrete components makes it possible to increase the stiffness of the girder using the tensile strength of steel components and the compressive strength of reinforced concrete components.
  • reinforced concrete slabs can be arranged and the whole can be filled with a layer of concrete overlay with a usable surface.
  • the problem to be solved in composite beams is a combination of steel components, such as an I-beam or a T-bar with reinforced concrete components.
  • the problem of combining these two materials is due to the fact that a girder, for example a bridge girder, operates at varying loads, and the operating parameters of steel and reinforced concrete under these conditions are different. These different parameters are the result of substantially different properties of these two materials, as described above.
  • designers take effort to eliminate as many welded joints as possible, especially those which need to be made at a construction site.
  • To combine these two materials the properties of which are complementary in the structure of a composite girder, in some known solutions holes in steel through which concrete material penetrates are proposed. In other known solutions, elements protruding from steel parts of a girder which penetrate into concrete material are proposed.
  • transverse T-bars are arranged and fixed webs upward.
  • the webs of the transverse T-bars comprise at certain intervals slits for transverse bars cooperating with a bottom layer of concrete.
  • the upper edges of the transverse T-bars comprise protrusions arranged in a comb-like manner and recesses separating them, which add to the mechanical connection of the upper layer of concrete, for example a layer of concrete overlay, with the transverse steel T-bars, and thus with support T-bars.
  • comb edge is understood in this patent specification as the longitudinal edge of the web of the T-bar containing a plurality of projections formed thereon and semi-closed recesses separating the projections from one another.
  • the projections and recesses on the edge of the web are aimed at increasing the strength of the connection of the T-steel section with a layer of reinforced concrete.
  • a number of design solutions for forming the comb edge of the web of the T-bar are provided. From one I-section, once a web is longitudinally cut, two T-sections are obtained, which can be arranged, according to the invention, next to each other to obtain one girder, or in another solution according to this invention, based on any single T-section one girder can be made.
  • the girder along the entire length comprises a steel reinforced concrete beam.
  • Specific shapes for cutting an I-section are proposed here, where cutting along a line determining the centre of the height of the web is along a line determining another projections and semi-closed recesses separating them.
  • the line dividing an I-beam into two T-bars determines another identical projections in the shape similar to the letter T and another semi-closed recesses separating them.
  • reinforcing bars can be arranged without them being cut and welded, and then the steel section prepared as above can be poured with concrete.
  • Cutting an I-beam into two T-bars is disclosed in Polish patent specification PL 219664 .
  • Cutting an I-beam into two T-bars is also proposed here, where along the cutting line consecutive projections are formed in the shape similar to the letter T and semi-closed recesses separating them for reinforcing bars and concrete as the second material used in the structure of a composite girder.
  • the cutting line is directed by a continuous and uninterrupted cut starting with a straight section and farther along curvilinear sections leaving residual material, namely offcuts. This makes it possible to stop the cutting process, as required, between offcuts, or beyond the construction material resulting in that no dangerous structural notch is left on the construction material.
  • a girder is a combination of a steel girder in the form of a T-bar with a comb-shaped edge of a web and a reinforced concrete flange or slab.
  • the girder comprises at least one T-bar with its web facing upwards.
  • the steel girder comprises two parallel T-bars with their webs facing upwards so that between the webs of the T-bars a section is formed comprising an inner channel with a U-shaped section, filled with reinforced concrete.
  • the height of the webs of the section is gradually decreased along its length towards the span supports, and the thickness of the upper reinforced concrete beam is increased towards the bottom edge of the steel section.
  • a composite section is gradually changed into a reinforced concrete section.
  • the composite girder in the span zone has the form of a steel section in the form of at least one T-bar with a bottom flange and with an upper longitudinal reinforced concrete slab, in the transition zone is gradually changed into a reinforced concrete beam.
  • the steel girder gradually disappears towards the T-bar flange, and it is gradually replaced by a reinforced concrete beam.
  • the support zone it comprises only a reinforced concrete beam.
  • a combination of a steel girder with a layer of reinforced concrete thereon has made it possible to obtain good tensile strength of a bottom steel beam which deflects between supports, with good compressive strength of an upper layer of reinforced concrete, which prevents excessive deflection of the steel beam.
  • the purpose of the invention is to solve the problem of increased fatigue resistance of a connection of a steel beam with a concrete beam in a transition zone of a girder to avoid fatigue cracks in reinforced concrete.
  • the girder comprises a span zone separated by at least one transition zone from at least one support zone.
  • the end of the girder's support zone is designed to rest the girder on a support.
  • the span zone comprises a horizontal support section in the form of at least one steel T-bar whose web with a horizontal upper edge is directed upwards, and a flange of the steel T-bar comprises a base of the girder in the span zone. To the upper edge of the web of the steel T-bar a longitudinal reinforced concrete flange combined with the T-bar is fixed.
  • the girder's span zone from at least one side ends with the support zone which, once the girder is brought into its operating position, rests on the bridge support foundation. Between the span zone and each support zone of the girder there is the transition zone which separates the span zone from the support zone.
  • the web of the above-mentioned steel T-bar is gradually shorter forming a diagonal edge in the transition zone.
  • the web of the T-bar is at least by 50% shorter than the same web in the girder's span zone.
  • the web of the steel T-bar comprises the horizontal upper edge.
  • the reinforced concrete upper flange takes the form of a T-bar with a reinforced concrete web.
  • the reinforced concrete web comprises a diagonal bottom edge, tangent to the diagonal upper edge of the web of the steel girder in this zone.
  • Both horizontal edges of the web of the steel T-bar namely the horizontal upper edge in the span zone and the horizontal upper edge at the end of the transition zone comprise members connecting these edges with the reinforced concrete flange, in the form of comb arranged protrusions and recesses separating them.
  • the prefabricated girder is characterised, according to the invention, in that near the diagonal upper edge of the web of the steel T-bar, in the transition zone, the connecting members have the form of holes. At least one reinforcement member in the form of a horizontal U-shaped stirrup and at least one reinforcement member in the form of a closed vertical stirrup passes through each hole.
  • the stirrups are situated in the reinforced concrete T-bar with their arms being oriented perpendicularly and/or in parallel to the surface of the upper flange of the reinforced concrete T-bar.
  • the steel T-bar is constant in height, shorter by 50% than the steel T-bar in the span zone.
  • the members connecting the web of the steel T-bar and the web of the reinforced concrete T-bar have the form of holes. At least one reinforcement member in the form of the closed vertical stirrup passes through each hole.
  • the end of the transition zone comprises at least one horizontal reinforcing bar on each side of the web of the steel T-bar and the bar passes through the corners of this closed vertical stirrup. Said reinforcing bars are routed between the arms of the stirrups and the web of the T-bar, in parallel to the upper edge of the web of the T-bar.
  • the width of the bottom flange of the steel T-bar is reduced on both sides. This means that in the transition zone, within the diagonal edge of the web of the steel T-bar, its flange is constant in width, the same as the width of this flange in the span zone. At the end of the transition zone, within the horizontal lower edge of the web of the T-bar, the width of the flange is gradually decreased.
  • a more flexible zone of the end section of the steel T-bar has been introduced, making it possible to avoid stresses hitherto accumulated in known solutions at the end edge of the steel T-bar. In prior-art solutions, stresses accumulated in one place resulted in scratches on reinforced concrete after a certain period of operation of the girder.
  • holes In the area of the diagonal edge of the web of the T-bar, holes have been proposed as members connecting the web of the T-bar with reinforced concrete.
  • the proposed holes are preferably oval, elongated in a horizontal direction.
  • More than one stirrup can pass through one said hole.
  • the arms of each stirrup can be arranged in a direction perpendicular or parallel to the surface of the reinforced concrete upper flange.
  • stirrups can be mounted whose arms are arranged in mutually perpendicular directions.
  • the girder's support zone at the free end can comprise an additional transition zone with an additional steel T-bar.
  • the term support in this patent specification should be understood as a foundation on which the end of the girder is arranged.
  • This further transition zone also comprises a reinforced concrete composite structure, where the web of the additional steel T-bar is constant in height and shorter by at least 50% than the web of the steel T-bar in the span zone.
  • the web of the additional T-bar in the additional transition zone comprises connecting members and is completely covered with concrete over its entire length.
  • the connecting members can have the form of comb arranged protrusions and semi-closed recesses separating them on the upper edge of the web of the additional steel T-bar.
  • the bridge girder can also contain an additional reinforcing bar arranged outside the vertical stirrups, in parallel to the upper edge of the web in the span zone, further in parallel to the diagonal upper edge of the web of the steel T-bar in the transition zone and further in parallel to the upper edge of the web at the end of the girder's transition zone.
  • This additional reinforcing bar is mounted in ancillary stirrups having their arms directed perpendicularly to the surface of the reinforced concrete upper flange of the girder.
  • the width of the web of the reinforced concrete T-bar in the transition zone and in the reinforced concrete support zone is preferably the same as the width of the flange of the steel T-bar in the span zone and in the substantial part of the transition zone.
  • At least one reinforcing bar is attached, parallel to the bottom of the girder and anchored in the reinforced concrete support zone.
  • the prefabricated bridge girder is a hybrid solution, namely it is a structure combined with steel members connected with reinforced concrete members.
  • the upper edge of the web of the T-bar was equipped with comb arranged protrusions and semi-closed recesses separating them.
  • parts of reinforcement from said semi-closed recesses could protrude, in particular on the diagonal edge of the web of the T-bar in the transition zone. This was especially the case for longitudinal reinforcement elements whose hooked ends were arranged in the semi-closed recesses.
  • the comb arranged semi-closed recesses on the diagonal edge of the web of the T-bar in the girder's transition zone have been replaced with horizontally elongated holes.
  • bottoms of stirrups have been arranged whose arms are directed perpendicularly or in parallel to the surface of the reinforced concrete flange.
  • the replacement of the bent ends of reinforcing bars with stirrups and passing horizontal bars through the eyes of the stirrups on both sides of the diagonal plate of the web of the T-bar has additionally stiffened the girder's transition zone and the support zone.
  • the additional stiffening of the transition zone results from the fact that the holes with the stirrups are designed in the area of the diagonal edge of the T-bar at different heights, and thus horizontal reinforcing bars are arranged at different heights between the stirrups and the web, on both sides of the web.
  • Fig. 1, Fig. 2 , Fig. 3 and Fig. 4 show the girder, according to the invention, in four embodiments.
  • the girder is a hybrid solution, which means that in part it is a composite reinforced concrete steel beam, and in part a reinforced concrete beam.
  • the girder comprises a prefabricated unit and is transported as a finished component for the installation of a bridge structure at a construction site.
  • the prefabricated bridge girders, according to the invention, shown in the embodiments in the accompanying drawings are about 25 meters long and weigh about 28 tonnes.
  • the girder comprises one span zone 100, two transition zones 101 and two support zones 102. It is not excluded in other embodiments, according to the invention, that the girder can be asymmetric, namely it can comprise, for example, except for the span zone 100, only one transition zone 101 and only one support zone 102.
  • the term support zone 102 is understood in this patent specification as the girder's zone the end of which rests on a foundation on which the bridge spans are arranged.
  • the examples of the girders shown in the figures rest on supports on both sides.
  • Figs. 1-4 also show schematically an arrangement of the main horizontal reinforcing bars and schematically an arrangement of the main connecting members in the form of the semi-closed recesses and the holes connecting the edge of the steel T-bar 1 with the girder's reinforced concrete members.
  • Fig. 1 and Fig. 2 show in detail subsequent zones of both embodiments of the girder. In Fig. 3 and Fig. 4 , the zones are marked more schematically than in Fig. 1 and Fig. 2 , for the clarity of the figures.
  • Fig. 1 shows the girder in the first embodiment.
  • the span zone 100 comprises a horizontal support section in the form of a steel T-bar 1 whose web 2 with substantially horizontal upper edge is directed upwards, and a flange 5 of the steel T-bar 1 comprises the girder's base in the span zone 100.
  • the web 2 is 1000 mm high
  • the bottom flange 5 is 300 mm wide.
  • the T-bar is made of S460 grade steel.
  • a longitudinal reinforced concrete upper flange 3 with a width of 1200 mm, made of C 40/50 concrete, combined with the edge of the web 2 is fixed.
  • the web 2 of the above-mentioned steel T-bar 1 is gradually shorter forming a diagonal edge in the transition zone 101.
  • the web 2 is at least by 50% shorter than the same web 2 in the girder's span zone 100 and has a horizontal upper edge.
  • the reinforced concrete flange 3 takes the form of a reinforced concrete T-bar 6 whose downwardly extending web 7 comprises a diagonal bottom edge 8. This bottom edge 8 of the web 7 of the reinforced concrete T-bar 6 in the transition zone 101 is parallel to a diagonal upper edge 9 of the web 2 of the steel T-bar 1.
  • Fig. 1 shows examples of the girder's cross-sections in individual zones.
  • the A-A cross-section is shown.
  • the girder comprises in this zone a structure combined with the steel T-bar comprising the web 2 directed upwards and the bottom flange 5.
  • the B-B and C-C cross-sections are shown, where this part of the girder, according to the invention, comprises the reinforced concrete T-bar 6 whose web 7 has the width corresponding to the width of the web 5 of the steel T-bar 1, as shown in the subsequent figures.
  • Fig. 5 shows a top view of the girder's reinforcement in the transition zone 101 with portions of the adjacent span zone 100 and the support zone 102 adjacent from the other side.
  • the reinforced concrete upper flange's 3 reinforcement is shown in a top view.
  • Holes 12 arranged along the diagonal edge of the web 2 of the steel T-bar 1 are shown here.
  • the holes 12 are 100 mm high and 150 mm long, with a longer dimension being a horizontal dimension.
  • each hole 12 in this embodiment comprises one vertical stirrup 13 made of a ⁇ 16 mm bar and one horizontal stirrup made of a ⁇ 12 mm bar.
  • the same part is shown in a bottom view in Fig. 6 .
  • This figure shows the bottom flange 5 of the steel T-bar 1.
  • the width of the bottom flange 5 of the steel T-bar 1 in this embodiment is gradually decreased.
  • An additional reinforcing bar 17 is also shown here.
  • the vertical stirrups 13 are closed in these embodiments. This means that at the stage of preparation of reinforcement for these members, U-shaped stirrups are arranged in the holes 12, and then upper arms of each stirrup are joined by welding.
  • the girder comprising additional composite zones 103 at the ends of the support zones 102 is shown.
  • the A-A and B-B cross-sections are the same as shown in Fig. 1 .
  • the C-C cross-section shows that in the additional composite zone in the bottom part of the web 7 of the reinforced concrete T-bar 6, an additional T-bar 15 is covered with concrete with a horizontal upper edge of a web, provided with a set of comb arranged protrusions 10 described above, separated by semi-closed recesses 11 designed for the vertical stirrups 13 being arranged therein.
  • the same connecting members are described for the horizontal upper edge of the web 2 of the steel T-bar 1.
  • the reinforced concrete upper flange 3 in the span zone 100 and the reinforced concrete T-bar 6 in the transition zone 101 comprise members connecting them with the upper edges of the web 2 of the steel T-bar 1.
  • both horizontal upper edges of the web 2 of the steel T-bar 1 comprise connecting members in the form of the comb arranged protrusions 10 and the semi-closed recesses 11 separating them. This is shown in Fig. 7 .
  • the connecting members Near the diagonal edge 9 of the web 2 of the steel T-bar 1, in the transition zone 101, the connecting members have the form of holes 12.
  • At least one reinforcement member in the form of the U-shaped stirrup 13 passes through each hole 12 of the diagonal web 2, with the stirrups' 13 arms being oriented perpendicularly to the surface of the reinforced concrete upper flange 3.
  • both zones 101 and 102 can comprise a bottom flat surface, as shown in the embodiments in Fig. 1 and Fig. 2 , or an arched surface, as shown in other embodiments in Fig. 3 and Fig. 4 .
  • At least one reinforcing bar 16 having a diameter of ⁇ 32 passes through each stirrup 13. Said reinforcing bars 16 are routed between the arms of the stirrups 13 and the web 2 of the T-bar 1, in parallel to the upper edge of the web 2 of the T-bar 1. This is clearly shown in Fig. 5 and Fig. 6 .
  • the holes 12 have been proposed as members connecting the web of the T-bar with reinforced concrete.
  • the proposed holes 12 are oval, elongated in a horizontal direction.
  • stirrups 13,14 with U-shaped arms pass through said holes 12.
  • the arms of each stirrup 13 are arranged in a perpendicular direction.
  • the stirrups 14 are arranged in parallel to the surface of the reinforced concrete upper flange 3.
  • two or more stirrups 13,14 can be mounted whose arms are arranged in mutually perpendicular directions.
  • the girder's support zone 102 at the free end can comprise the additional transition zone 103.
  • the term supports 4 in this patent specification should be understood as a foundation on which the end of the girder is arranged.
  • This further composite zone 103 also comprises a reinforced concrete structure, where the web of the additional steel T-bar 15 is constant in height and shorter by at least 50% than the web 2 of the steel T-bar 1 in the girder's span zone 100.
  • the web of the additional steel T-bar 15 in the additional composite zone 103 is completely covered with concrete over its entire length.
  • This additional T-bar's 15 web is 300 mm high and flange is 300 mm wide.
  • the bridge girder contains in these embodiments two additional reinforcing bars 17 with a diameter of ⁇ 32 mm, arranged outside the vertical stirrups 13. This is shown in Fig. 10 and Fig. 11 .
  • This additional reinforcing bar 17 initially extends in parallel to the upper edge of the web 2 in the span zone 100, further in parallel to the diagonal edge of the web 2 in the transition zone 101 and further in parallel to the upper edge of the web 2 at the end of the transition zone 102.
  • Said additional reinforcing bar 17 is mounted in ancillary stirrups 18 made of a reinforcing bar with a diameter of ⁇ 6 mm, having their arms directed perpendicularly to the surface of the reinforced concrete upper flange 3.
  • Fig. 1 and Fig. 2 show in the B-B and C-C sections that the width of the web 7 of the reinforced concrete T-bar 6 is in these embodiments the same as the width of the flange of the steel T-bar 1 in the girder's span zone 100.
  • the girders according to the embodiments shown in Fig. 3 and Fig. 4 have the same structure.
  • At least one coupling reinforcing bar 19 is attached, parallel to the bottom surface of the support zone 102.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (12)

  1. Poutre de pont préfabriquée, composée d'une zone de transition (100) séparée d'au moins une zone de transition (101) d'au moins une zone de support (102), où dans la zone de travée (100) il y a au moins une section de support horizontale sous la forme de té d'acier (1), dont l'âme (2) avec le bord supérieur horizontal dirigé en haut et vers le bord supérieur de l'âme (2) ce té d'acier (1) une bride supérieure longitudinale renforcée (3) est fixée, où dans la zone de transition (101) la hauteur de l'âme (2) du té d'acier (1) diminue progressivement en formant un bord supérieur diagonal (9) et à la fin de cette zone de transition (101) l'âme (2) est de 50% moins haut que l'âme (2) du té d'acier (1) dans la zone de travée (100), et comprend un bord supérieur horizontal, et dans cette zone de transition (101) la bride supérieure renforcée (3) prend la forme de té renforcé dont l'âme (7) dirigé en bas comprend le bord inférieur diagonal (8) paralèlle au bord supérieur diagonal (9) de l'âme (2) du té d'acier (1), où la bride supérieure renforcée (3) dans la zone de travée (100) et le té renforcé (6) dans la zone de transition (101) comprennent des éléments la connectant aux bords supérieurs de l'âme (2) du té d'acier (1), où tous les deux bords supérieurs horizontaux de l'âme (2) du té d'acier (1) dans la zone de travée (100) et à la fin de la zone de transition (101) comprennent des éléments de connexion sous la forme de protrusions arrangées en peigne (10) et d'aires semi-fermées (11) les séparant, caractérisée en ce que près du bord supérieur diagonal (9) de l'âme (2) du té d'acier (1) dans la zone de transition (101) les éléments de connexion ont la forme de trous (12), et passe à travers chaque trou (12) au moins un élément de renforcement sous la forme d'un étrier horizontal (14) sous la forme de lettre U et au moins un élément de renforcement sous la forme d'étrier vertical (13) fermé, et passe à travers chaque trou (12) au moins un élément de renforcement sous la forme d'étrier vertical (13) fermé, où à la fin de la zone de transition (101) il y a au moins une barre de renforcement (16) horizontale de chaque côté de l'âme (2), qui passe à travers de cet étrier vertical fermé (13).
  2. Poutre de pont selon la revendication 1, caractérisée en ce qu'à la fin de la zone de transition (101) la largeur de la bride inférieure (5) du té d'acier (1) est réduite de deux côtés.
  3. Poutre de pont selon la revendication 1, caractérisée en ce que les trous (12) dans la zone de transition (101) près du bord diagonal (9) de l'âme (2) du té d'acier (1) ont la forme ovale, allongée horizontalement.
  4. Poutre de pont selon la revendication 1 ou 2, caractérisée en ce qu'à travers d'un trou (12) passent plus d'un étrier vertical (13), et au moins un étrier horizontal (14).
  5. Poutre de pont selon la revendication 4, caractérisée en ce que les bras de chaque étrier (13,14) sont arrangés perpendiculairement ou parallèlement par rapport à la surface de la bride supérieure renforcée (3).
  6. Poutre de pont selon la revendication 1 ou 2, caractérisée en ce que les barres de renforcement (16) horizontales passent parmi les bras des étriers (13), et l'âme (2) du té d'acier (1).
  7. Poutre de pont selon la revendication 1, caractérisée en ce que la zone de support (102) de la poutre, à la fin libre comprend une zone composite additionnelle (103) avec un té d'acier additionnel (15) où la hauteur de l'âme de ce té d'acier additionnel (15) est constante et moindre d'au moins de 50% de la hauteur de l'âme (2) du té d'acier (1) dans la zone de travée (100), et l'âme de ce té d'acier additionnel (15) comprend des éléments de connexion sur le bord supérieur.
  8. Poutre de pont selon la revendication 7, caractérisée en ce que les éléments de connexion ont la forme de protrusions arrangées en peigne (10) et d'aires semi-fermées (11) les séparant.
  9. Poutre de pont selon la revendication 1, caractérisée en ce qu'elle comprend une barre de renforcement additionnelle (17) passant en dehors des étriers verticaux (13), parallèlement par rapport au bord supérieur de l'âme (2) du té d'acier (1) dans la zone de travée (100) plus loin parallèlement par rapport au bord supérieur diagonal (9) de l'âme (2) dans la zone de transition (101), et ensuite parallèlement par rapport au bord supérieur de cet âme (2) à la fin de la zone de transition (101).
  10. Poutre de pont selon la revendication 9, caractérisée en ce que la barre de renforcement additionnelle (17) est encastrée dans des étriers auxiliaires (18) dont les bras sont dirigés perpendiculairement par rapport à la surface de la bride supérieure renforcée (3).
  11. Poutre de pont selon la revendication 1, caractérisée en ce que la largeur de l'âme (7) du té renforcé (6) dans la zone de transition (101) et dans la zone de support renforcée (102) est la même que la largeur de la bride (5) du té d'acier (1) dans la zone de travée (100).
  12. Poutre de pont selon la revendication 1, caractérisée en ce qu'au passage de la zone de transition (101) à la zone de support (102), à l'âme (2) du té d'acier (1) est fixée par soudage au moins une barre de renforcement couplant (19), parallèle au fond de la poutre et ancrée dans la zone de support renforcée (102).
EP16460090.0A 2016-11-29 2016-11-29 Poutre de pont préfabriquée Not-in-force EP3327200B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL16460090T PL3327200T3 (pl) 2016-11-29 2016-11-29 Prefabrykowany dźwigar mostowy
EP16460090.0A EP3327200B1 (fr) 2016-11-29 2016-11-29 Poutre de pont préfabriquée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16460090.0A EP3327200B1 (fr) 2016-11-29 2016-11-29 Poutre de pont préfabriquée

Publications (2)

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EP3327200A1 EP3327200A1 (fr) 2018-05-30
EP3327200B1 true EP3327200B1 (fr) 2019-05-15

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PL (1) PL3327200T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108755391A (zh) * 2018-07-26 2018-11-06 中铁大桥勘测设计院集团有限公司 一种主梁结构及桥梁
CN112267383A (zh) * 2020-10-14 2021-01-26 中国建筑第八工程局有限公司 预制桥面板钢混结合梁施工方法

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Publication number Priority date Publication date Assignee Title
US2987855A (en) 1958-07-18 1961-06-13 Gregory Ind Inc Composite tall-beam
DE2850187C2 (de) 1978-11-18 1981-10-01 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Kratzkettenförderer mit Zahnstange für den kettenlosen Vorschub von Gewinnungsmaschinen
US5279093A (en) * 1991-12-11 1994-01-18 Mulach Parking Structures Corp. Composite girder with apparatus and method for forming the same
US5664378A (en) 1995-12-07 1997-09-09 Bettigole; Robert A. Exodermic deck system
IT1283189B1 (it) 1996-03-05 1998-04-16 Italcementi Spa Metodo per la realizzazione di una trave composita e trave cosi' realizzata
US6145270A (en) * 1997-06-24 2000-11-14 Hillman; John Plasticon-optimized composite beam system
US7587877B2 (en) 2003-10-28 2009-09-15 Best Joist Inc Cold-formed steel joists
PL386219A1 (pl) 2008-10-03 2009-08-31 Ssf Ingenieure Gmbh Beratende Ingenieure Im Bauwesen Stalowo-betonowe dźwigary zespolone oraz sposób ich wykonania
KR100936403B1 (ko) 2009-05-15 2010-01-12 주식회사 성현케미칼 내화피복재 부착구조를 갖는 성형강판 콘크리트 합성보 및 그의 시공방법
PL227501B1 (pl) 2012-11-19 2017-12-29 Europrojekt Gdańsk Spółka Akcyjna Dźwigar zespolony do budowy mostów lub wiaduktów
US9464437B1 (en) 2015-12-09 2016-10-11 Naji Mohammed Al-Failkawi Precast I-beam concrete panels

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Publication number Publication date
PL3327200T3 (pl) 2019-11-29
EP3327200A1 (fr) 2018-05-30

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