EP2444567B1 - Verschalungselement zum Bau eines Trägers - Google Patents

Verschalungselement zum Bau eines Trägers Download PDF

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Publication number
EP2444567B1
EP2444567B1 EP11153695.9A EP11153695A EP2444567B1 EP 2444567 B1 EP2444567 B1 EP 2444567B1 EP 11153695 A EP11153695 A EP 11153695A EP 2444567 B1 EP2444567 B1 EP 2444567B1
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EP
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Prior art keywords
formwork
profile
joist
formwork element
reinforcement
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EP11153695.9A
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English (en)
French (fr)
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EP2444567A1 (de
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Gérard Sekrane
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    • 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
    • E04C5/065—Light-weight girders, e.g. with precast parts
    • E04C5/0653—Light-weight girders, e.g. with precast parts with precast parts
    • E04C5/0656—Light-weight girders, e.g. with precast parts with precast parts with lost formwork
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members

Definitions

  • the invention relates to a formwork element according to claim 1 for the construction of joists used, in particular, for floors manufactured using joist / interjoist assemblies or even constructions of the balcony or loggia type.
  • prefabricated reinforced concrete or prestressed concrete joists comprising a concrete heel in which a metal reinforcement is partially embedded.
  • the heel is formed, in a known manner, by a U-folded sheet metal section acting as a formwork in which the concrete is poured.
  • This profile is permanently fixed during the concrete pouring of the joist, the latter becoming self-supporting.
  • interjoists also called slabs, which are parts intended to rest on the joists, to serve as the formwork of the floor during the pouring of the concrete for the paving of the floor.
  • Floors have thus been proposed comprising thermally insulating interjoists obtained by cutting or molding a body of cellular insulating material, for example of expanded polystyrene.
  • a known structure thus provides for adding an insulating structure of the Placoplatre type under the beams using fasteners adapted to ensure the fire resistance of the latter.
  • Another known structure provides insulating interjoists projecting cantilevered so as to cover the lower surface of the adjacent joists in order to thermally insulate it.
  • An object of the present invention is to remedy the aforementioned drawbacks.
  • Another object of the present invention is to provide joists offering effective thermal insulation while reducing the mass of the frame of the floor.
  • Another object of the present invention is to provide beams offering easy and quick production and assembly.
  • Another object of the invention is to provide beams which can meet satisfactory thermal performance in order to be able to be certified according to the new thermal standards for building construction.
  • a formwork element according to claim 1 for the construction of a reinforcing beam comprising a profile intended to be fixed to the reinforcement and that the formwork element provides means. to partially embed said frame, remarkable in that said section is formed from a composite material to ensure the fire resistance of said beam, the bosses forming a longitudinal universal fixing groove.
  • the formwork element ensures the fire resistance of the beam and the entire floor has continuous fire resistance, without thermal bridges.
  • the invention also relates to a beam remarkable in that it comprises at least one formwork element as mentioned above and a metal or composite frame intended to be fixed to said formwork element.
  • the invention also relates to a construction assembly comprising a beam as mentioned above and transverse reinforcing bars made of composite material suitable for passing through the formwork elements of said beam.
  • At least two formwork elements are configured to be installed on a wall edge or a construction element and serve as a support for a joist via one or more recesses each capable of receiving a transverse reinforcing bar. .
  • a frame of a floor is made up of self-supporting joists parallel to one another, intended to be interconnected by filling elements such as slabs or interjoists.
  • a concrete pour for the paving of the floor ensures the interlocking of the interjoists and the joists.
  • a self-supporting beam conventionally comprises a reinforcing metal frame embedded in a heel formed from a suitable material, the contours of which are delimited by a formwork element remaining permanently after filling the beam with the material.
  • the heel is intended in particular to serve as a support for the interjoists located on either side of the beam.
  • beams mention may be made of a beam prefabricated on a production table or manufactured on site, or even a prestressed beam.
  • the beam 10 comprises a structural element acting as a formwork, designated by the general reference 100.
  • Such a formwork element 100 comprises a profile 101, of U-shaped cross section, having a sole 110 and two parallel lateral wings 150, arranged on either side of said sole 110.
  • the metal frame 200 forming the core of the beam 100 is intended to be fixed on the sole 110, in the concavity of the profile 101.
  • This longitudinal reinforcement 200 of cross section in the shape of an inverted V, conventionally comprises an upper bar 201 and two parallel lower bars 202,203, each lower bar 202,203 being secured to the upper bar 201 by a mesh 204.
  • This trellis 204 comprises a series of inclined bars, which form a triangulated assembly secured by welding with the upper 201 and lower 202,203 bars of the reinforcement 200.
  • the bars of the lattice 204 can be arranged in a different way depending on the triangulation system adopted.
  • the frame 200 is not metallic but formed of reinforcing bars of composite material.
  • reinforcing bars of the V-ROD composite reinforcing bar type from the company Pultrall (www.pultrall.com). These reinforcing bars can in particular promote the fight against corrosion of the reinforcement 200.
  • metal frame 200 is also valid for a frame made of composite material.
  • a frame 200 formed of metallic or composite reinforcing bars 201, 202, 203, 204 and mesh comprising a system other than triangular.
  • Such a composite reinforcement is composed of a series of bars 204 perpendicular to the upper 201 and lower 202,203 bars of the reinforcement 200 thus drawing a square or rectangular mesh.
  • the frame 200 In order to fix the frame 200 on the formwork element 100 and, more precisely, on the sole 110, the latter is provided with means 120 for indexing the frame 200 on its inner face 111.
  • indexing means 120 are illustrated on figures 1 and 4 especially.
  • bosses 121 projecting from the inner face 111 of the sole 110, in the concavity of the profile 101, each boss 121 forming a longitudinal fixing groove intended to receive a corresponding part of a lower bar 202, 203 of the frame 200 .
  • bosses 120 can be fixed or repositionable. In an exemplary embodiment of the present invention, four bosses 120 are distributed over the inner face 111 of the sole 110, in line with the lower bars 202, 203 of the frame 200.
  • the fixing groove of these bosses 120 is universal, namely that its shape and dimensions adapt to the shapes and dimensions of the reinforcing bars 200 which it receives.
  • the metallic or composite reinforcement 200 is placed in a precise manner on the formwork element 100, before any partial flooding in a suitable material in order to form the final beam 10.
  • Such a material forming the heel of the joist 10 encasing the reinforcement 200 can be, without limitation, an insulating material such as reinforced concrete, thermal concrete, prestressed concrete, high performance concrete or else an insulating material of polyurethane foam type.
  • the heel of the beam 10 encasing the frame 200 may comprise an insulating structure 320 in honeycomb (of the NIDA or NIDAPLAST type) housed in the concavity of the profile 101.
  • This honeycomb structure 320 may or may not subsequently be embedded in concrete or covered with an insulating foam such as polyurethane foam or the like.
  • This honeycomb structure 320 can be formed, in a non-limiting example, of polypropylene material.
  • the cells of the honeycomb structure 320 may be filled with a flexible insulating material, of the airgel type.
  • airgels As nonlimiting examples of airgels, mention may be made of aerogels from the company Aspen Aérogels (www.aerogel.com).
  • Such variant embodiments reinforce the thermal insulation of the formwork elements 100 according to the different embodiments of the present invention.
  • the profile 101 of the formwork element 100 is formed from a structure made of composite material.
  • Such a composite material may be of the organic matrix composite type or of a metal matrix composite material.
  • the profile 101 is formed of a composite material comprising an organic matrix associated with structural reinforcements formed from cut fibers and / or from recycling.
  • the profile 101 is formed from a composite material comprising a polyester resin matrix filled with glass fibers.
  • such a profile 101 is suitable for thermally insulating the beam and ensuring its fire resistance.
  • the thermal bridges of the beams 10 are eliminated when making a floor while providing formwork elements 100 of reduced mass.
  • profiles 101 make it possible to meet new standards and regulations relating to buildings, such as, for example, the BBC (Low consumption building) and BEPOS (positive energy building) standards.
  • Such formwork elements 100 made of composite material are in one piece, ie they can be produced by a single overall molding.
  • the indexing means 120, the connecting plates, the return fins or even the mounting inserts described later can be molded with the profile 101 of the formwork element 100.
  • the modular aspect of the formwork elements 100 is favored, as will be seen more precisely below in relation to the figures 5 to 7 .
  • the formwork element 100 can be made of a thin composite material, in particular for the formwork elements not having assembly inserts.
  • the formwork element 100 may further comprise a connecting plate 300 integral with the sole 110 of the profile 101, projecting at one end of the latter.
  • This connecting plate 300 is intended to allow the fixing of the beam 10 on a level of a wall, a sill or a transverse beam when making a floor.
  • This connecting plate 300 may or may not include a fixing orifice 310, of oblong shape, adapted to cooperate with complementary fixing elements integral with the aforementioned walls, stringers or beams.
  • the plate 300 is intended to cooperate with a suitable bracket secured to a beam, via removable fixing means of the threaded rod / bolt type.
  • the fixing hole 310 is thus intended to receive the threaded rod.
  • the plate is also made of a composite material and is molded with the profile 101.
  • the formwork element 100 further comprises mounting inserts 140 and reservations 130 molded with the profile 101 of the formwork element 100.
  • the mounting inserts 140 are adapted to receive screwing elements allowing the fixing of ancillary elements such as ceilings directly on the beam 10, without intermediate fixing parts such as tabs screwed into the concrete of the beams to support said arrangements.
  • the reservations 130 for their part, can be used as a reference for the subsequent placement of mounting inserts or any other suitable mounting part.
  • inserts 140 and reservations 130 are also areas of reinforcement of the profile 101.
  • They can also be reinforced with a honeycomb structure.
  • Such inserts 140 and reservations 130 can have various embodiments.
  • Non-limiting examples of embodiment are illustrated on the figures 2 and 3 .
  • an insert 140 is capable of being formed by a boss 141 projecting in the concavity of the profile 101, on the inside face 111 of the sole 110 of the profile 101.
  • Such a boss 141 may have, as illustrated on figure 2 , a section of generally straight ⁇ shape, the concavity of ⁇ being directed towards the outside of the profile 101, forming an open fixing groove 142 adapted to receive a corresponding fixing element.
  • Such a boss 141 may also have, in a second embodiment illustrated in FIG. figure 3 , a section of generally straight ⁇ shape and be provided, on its face facing the sole 110 of the profile 101, with a finger 143 projecting outside the profile 101, perpendicularly to the sole 110.
  • This finger 143 is shaped to cooperate with a complementary fastening element. Thus, in a non-limiting example, it can present a threaded central hole 144 intended to cooperate with a threaded fixing rod 1.
  • reservations 130 may themselves comprise mounting inserts 140 as mentioned above.
  • mounting inserts 140 can be combined with insert enhancers 145 (shown on figure 6 ) having a function similar to that of the fixing groove 142 described above and allowing fixing, such as screwing in the thickness of the composite material of the profile 101.
  • the formwork element 100 comprises, on the upper edges 151 of the lateral wings 150, one or more transverse return fins 160 extending parallel to the sole 110 and directed towards the inside of the profile 101.
  • these return fins 160 are located at one end of the lateral wings 151 and, preferably, at their end opposite to the connecting plate 300.
  • This particular shape of the fins 160 offers the advantage of a simplified demolding of the profile 101.
  • the return fins 160 are intended to provide a larger contact surface to the profile 101 of the formwork element 100, in order to ensure better connection of the profile 101 with the concrete of the paving.
  • the return fins 160 serve as strapping for better holding of the beam 10 once the profile 101 is filled.
  • a second embodiment provides return fins 160 that are uniform over the entire length of the side wings 150, forming a flat at the top edge 151 of each side wing 150.
  • the formwork element 100 can be adapted as required.
  • brackets 20 may be a so-called end formwork element 102 of the beam 10, intended to be fixed to brackets 20 located on either side of the formwork element 102 at the ends of the beam. 10, the brackets 20 being intended to receive the interjoists of the floor. Said brackets 20 can be covered with airgel and honeycomb.
  • each end formwork element 102 comprises, on the outer face 153 of the lateral flanges 150 of the profile 101, latching means 154 or similar devices intended to cooperate with complementary fixing means provided on the brackets 20.
  • These complementary fixing means may be notches formed on the vertical edges of the brackets 20, facing the outer faces 153 of the side wings 150 of the profile 101.
  • brackets 20 are also made of a composite material.
  • each end formwork element 102 can be provided with a connecting plate 300 described above.
  • Each end formwork element 102 can also be produced by putting in place, if necessary, reservations 130, assembly inserts 140 or even return fins 160, before any molding of the profile 100.
  • the formwork element 100 may be an intermediate spar 103 extending over all or part of the length of the beam 10, between two end formwork elements 102.
  • Such an intermediate formwork element 103 can, similarly to an end formwork element 102, comprise, if necessary, reservations 130, mounting inserts 140 or even return fins 160.
  • the composite nature of the profiles 101 of the formwork elements 100, 102, 103 makes it possible to produce a single molding of the complex formwork parts, favoring a modular aspect of the formwork of the beam 10 which is simple to implement.
  • the formwork of the beam 10 can be formed from a series of formwork elements 100, similar or not, these formwork elements being adapted to the needs of the joist 10.
  • a joist 10 may include an end formwork element 102, at each of its ends, as illustrated in figure 5 .
  • It can also comprise an end formwork element 102 at each of its ends, associated with a plurality of intermediate formwork elements 103, similar or not, distributed at a distance or not along the beam 10, as illustrated. on the figure 6 .
  • intermediate formwork elements 103 are interposed along the beam 10, namely two intermediate formwork elements 103 of different thicknesses.
  • the figure 7 illustrates a beam 10 comprising two end formwork elements 102 and an intermediate formwork element 103 extending between the two end formwork elements 102, continuously over the entire length of the beam 10.
  • the formwork element 100 may be an end formwork element 102 extending over the entire length of the beam 10 from one end of the latter to another.
  • the intermediate formwork elements 103 may be different depending on their position on the beam 10.
  • the formwork elements 100 can themselves be formed by a packaging 30 of the cardboard packaging type acting as formwork when filling the beam 10 with a suitable material.
  • This packaging 30 facilitates the manufacture of long beams 10 or beams 10 on site and makes it possible to reduce their manufacturing costs.
  • the formwork of a beam 10 can be made up of a plurality of formwork elements 100 that are similar or not nested.
  • One and / or the other of the ends of the two lateral flanges 150 and the corresponding end (s) of the sole 110 are shaped so that the formwork element 100 can interlock with an adjacent formwork element 100 when they are in contact.
  • one and / or the other of the ends of the two lateral flanges 150 of a section 101 can comprise, depending on the position of the section 101 along the beam and the adjacent formwork elements, a step 152 vertical.
  • This recess 152 is able to come into contact with a recess 152 of complementary shape present at the corresponding ends of each lateral flange 150 of the section 101 of the adjacent formwork element 100.
  • step 152 of a formwork element 100 The shape and dimensions of the step 152 of a formwork element 100 are adapted so that this step 152 fits with the step 152 of the juxtaposed formwork element 100.
  • the vertical edge of the step 152 of a formwork element 100 forms an abutment against the vertical edge of the step 152 of the juxtaposed formwork element 100, when they are arranged edge to edge.
  • Such a vertical recess 152 can be provided on the upper edge or the lower edge of the side wings 150, this being a function of the adjacent formwork elements 100 with which it is intended to fit together, as is. illustrated on the figure 10 .
  • This rebate 112 is suitable for fixing with suitable means on a complementary bearing surface provided on the adjacent formwork element 100.
  • suitable means can be gluing means, for example.
  • the support rebates 112 form pre-cut zones, offering the advantage of being able to shorten the formwork of a joist that is too long by precasting the excess formwork elements or of being able to extend the length of the joist formwork, by interlocking new formwork elements 100 depending on the desired length of the latter.
  • the formwork elements 100 according to the invention are thus adaptable according to the specific needs of the site.
  • Such joists 10 and the associated formwork elements 100 are illustrated in the figures 12, 13 and 14 .
  • the beams 10 can in particular be placed between the pre-slab 1 of the floor and the floor 2 of the balcony.
  • the formwork elements 100 may further comprise, on their side walls 150, through holes 301 adapted to receive transverse reinforcing bars 330 adapted to pass through the formwork element on either side. 100 correspondent.
  • These transverse reinforcing bars 330 are intended to form strands for the beam 10 according to the invention, and thus take up the forces exerted on the beam 10 and the corresponding formwork elements 100.
  • they are preferably made of a composite material, in order to promote great thermal insulation of the buildings.
  • the joist 10 according to the invention arranged at the interface between the floor 2 of the balcony and the pre-slab 1 of the frame of a floor cooperate with the transverse reinforcing bars 330 crossing.
  • beams 10 can be self-supporting or simply placed on the pre-slab 1.
  • the reinforcement bars 330 are, moreover, embedded in the floor 1 and the floor 2 of the balcony.
  • beams 10 can be self-supporting or simply placed on the pre-slab 1.
  • At least two end-to-end formwork elements 100 can be configured to be installed on a wall edge 400 or a construction element, such as a cinder block, and to serve as a support for a joist 10, like the one illustrated in figure figure 11 .
  • a plate or transverse reinforcing bar 330 can be configured to come to be connected to a recess 152 of a formwork element.
  • Each formwork element 100 can have side walls of different height.
  • Such an embodiment makes it possible to cast a compression table at the same time as a belt.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Claims (17)

  1. Verschalungselement (100) zum Bau eines Trägers (10) mit Bewehrung, umfassend ein Profil (101), das dazu bestimmt ist, an der Bewehrung (200) befestigt zu werden, wobei das Verschalungselement (100) Indexierungsmittel (120) vorsieht, die Buckel (121) umfassen, um die Bewehrung (200) teilweise zu versenken, dadurch gekennzeichnet, dass das Profil (101) aus Verbundmaterial mit organischer Matrix oder aus Verbundmaterial mit metallischer Matrix gebildet ist, um für die Feuerbeständigkeit des Trägers (10) zu sorgen, wobei die Buckel (121) eine universelle längliche Ausnehmung zur Befestigung bilden.
  2. Element nach Anspruch 1, dadurch gekennzeichnet, dass es weiter eine Verbindungsplatine (300) umfasst, die in einem Stück mit dem Profil (101) geformt ist, wobei die Platine (300) dazu bestimmt ist, das Verschalungselement (100) an einem geeigneten Wandelement zu befestigen.
  3. Element nach Anspruch 2, dadurch gekennzeichnet, dass die Verbindungsplatine (300) aus Verbundmaterial ist.
  4. Element nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass, da das Profil (101) eine Sohle (110) und zwei Seitenflügel (150) beiderseits der Sohle umfasst, die Sohle (110) derart ausgeformt ist, um mindestens einen Montageeinsatz (140) zu umfassen.
  5. Element nach Anspruch 4, dadurch gekennzeichnet, dass der Montageeinsatz (140) ein Buckel ist, der aus der Sohle (110) hervorsteht, wobei der Buckel in der Konkavität des Profils (101) eine Ausnehmung zur Befestigung für ergänzende Befestigungselemente oder einen Befestigungsfinger für ergänzende Befestigungselemente umfasst, der nach außerhalb des Profils (101) hervorsteht.
  6. Element nach Anspruch 1, dadurch gekennzeichnet, dass das Profil (101) Mittel zum Indexieren (120) der Bewehrung umfasst.
  7. Element nach Anspruch 6, dadurch gekennzeichnet, dass, da die Bewehrung aus einer Reihe von Stäben aus Metall- oder Verbundmaterial gebildet ist, die Mittel zum Indexieren (120) angepasst sind, um die Bewehrungsstäbe mit unterschiedlichen Abmessungen und Form zu indexieren.
  8. Element nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass das Profil (101) querlaufende Rückführrippen (160) umfasst, die sich von den Seitenflügeln (150) ins Innere des Profils erstrecken.
  9. Element nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, dass das eine und/ oder das andere der Enden der Seitenflügel (150) derart ausgeformt sind, dass das Verschalungselement (100) in ein benachbartes Verschalungselement einrasten kann, wobei die Enden der Seitenflügel (150) jeweils einen Absatz (152) umfassen, die imstande ist, in einen Absatz (152) in ergänzender Form einzurasten, die an einem entsprechenden Ende eines Seitenflügels (150) eines benachbarten Verschalungselements (100) vorhanden ist.
  10. Element nach einem der Ansprüche 4 bis 9, dadurch gekennzeichnet, dass die Sohle (110) des Profils (101) mindestens eine Anlagefuge (112) umfasst, die geeignet ist, um an einer ergänzenden Anlageoberfläche befestigt zu werden, die an einem benachbarten Verschalungselement (100) vorgesehen ist, sodass das Verschalungselement (100) in das benachbarte Verschalungselement einrasten kann.
  11. Element nach einem der Ansprüche 4 bis 10, dadurch gekennzeichnet, dass die Seitenflügel (150) des Profils (101) Befestigungsmittel umfassen, die imstande sind, mit ergänzenden Befestigungsmitteln zusammenzuwirken, die an Winkeleisen vorgesehen sind, die dazu bestimmt sind, Füller zu stützen.
  12. Träger (10), dadurch gekennzeichnet, dass er mindestens ein Verschalungselement (100) nach einem der vorstehenden Ansprüche und eine Metall- oder Verbundbewehrung (200) umfasst, die dazu bestimmt ist, an dem Verschalungselement (100) befestigt zu werden.
  13. Träger nach Anspruch 12, dadurch gekennzeichnet, dass er weiter eine Wabenstruktur (320) umfasst, die in der Konkavität des Profils (101) des Verschalungselements (100) eingesetzt ist.
  14. Träger nach einem der Ansprüche 12 bis 13, dadurch gekennzeichnet, dass er eine modulare Verschalung umfasst, die aus einer Reihe von ähnlichen oder nicht ähnlichen Verschalungselementen (100) gebildet ist, wobei diese Verschalungselemente entlang der Bewehrung (200) eingerastet oder verteilt sind.
  15. Träger nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass er ein vorgefertigter oder vorgespannter Träger (10) ist.
  16. Konstruktionsbausatz, umfassend einen Träger (10) nach einem der Ansprüche 12 bis 15 und querlaufende Verstrebungsstäbe (300) aus Verbundmaterial, die angepasst sind, um die Verschalungselemente (100) des Trägers (10) zu durchqueren.
  17. Bausatz nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass mindestens zwei Verschalungselemente (100) nach einem der Ansprüche 9 bis 11 konfiguriert sind, um an einer Maueroberkante (400) oder einem Konstruktionselement installiert zu werden, und als Stütze für einen Träger (10) anhand eines oder mehrerer Absätze (152) zu dienen, die imstande sind, jeweils einen querlaufenden Verstrebungsstab (330) aufzunehmen.
EP11153695.9A 2010-02-08 2011-02-08 Verschalungselement zum Bau eines Trägers Active EP2444567B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1000496A FR2956139B1 (fr) 2010-02-08 2010-02-08 Element de coffrage pour la construction d'une poutrelle

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EP2444567A1 EP2444567A1 (de) 2012-04-25
EP2444567B1 true EP2444567B1 (de) 2021-01-13

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114150864B (zh) * 2021-12-02 2023-01-31 浙江银晨建设有限公司 一种大跨度预应力混凝土梁支模结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478704A1 (fr) * 1980-03-22 1981-09-25 Glass Reinforced Concrete Ltd Plancher en beton arme a coffrage permanent
FR2940337A1 (fr) * 2008-12-19 2010-06-25 Isoltop Poutrelle metallique pour la fabrication de planchers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1292977B1 (it) * 1997-04-11 1999-02-11 Gruppo Effe 2 Spa Travetto per solai e/o architravi prefabbricati con traliccio e laterizio e fondello per tale travetto.
ITCR20020015A1 (it) * 2002-09-11 2004-03-12 Ezio Ferrari Elemento metallico o in altro materiale per l'esatto
DE20309363U1 (de) * 2003-06-17 2004-07-22 Filigran Trägersysteme GmbH & Co KG Bauelement
EP1967667B1 (de) * 2007-03-07 2012-10-24 CSR limited Dachziegel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478704A1 (fr) * 1980-03-22 1981-09-25 Glass Reinforced Concrete Ltd Plancher en beton arme a coffrage permanent
FR2940337A1 (fr) * 2008-12-19 2010-06-25 Isoltop Poutrelle metallique pour la fabrication de planchers

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EP2444567A1 (de) 2012-04-25
FR2956139B1 (fr) 2012-02-24
FR2956139A1 (fr) 2011-08-12

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