FR2487883A1 - Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress - Google Patents

Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress Download PDF

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Publication number
FR2487883A1
FR2487883A1 FR8017193A FR8017193A FR2487883A1 FR 2487883 A1 FR2487883 A1 FR 2487883A1 FR 8017193 A FR8017193 A FR 8017193A FR 8017193 A FR8017193 A FR 8017193A FR 2487883 A1 FR2487883 A1 FR 2487883A1
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Prior art keywords
boxes
longitudinal
metal
sheet steel
bending
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Granted
Application number
FR8017193A
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French (fr)
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FR2487883B1 (en
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR8017193A priority Critical patent/FR2487883A1/en
Priority to CA000362127A priority patent/CA1177274A/en
Priority to IT25346/80A priority patent/IT1150047B/en
Priority to AU63903/80A priority patent/AU6390380A/en
Priority to MA19178A priority patent/MA18978A1/en
Priority to PCT/FR1980/000150 priority patent/WO1981001162A1/en
Priority to ES495988A priority patent/ES8106034A1/en
Priority to AR282896A priority patent/AR228264A1/en
Priority to EP80901942A priority patent/EP0038334A1/en
Priority to OA57411BISD priority patent/OA08942A/en
Publication of FR2487883A1 publication Critical patent/FR2487883A1/en
Application granted granted Critical
Publication of FR2487883B1 publication Critical patent/FR2487883B1/fr
Granted legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • 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
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2415—Brackets, gussets, joining plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B2001/2466—Details of the elongated load-supporting parts
    • E04B2001/2478—Profile filled with concrete

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The steel sheets (1) have a network of connectors (3) held at one end by the sheets while the body of the connector and its free end are cast into the concrete, the lines of connectors being parallel to the reinforcing bars (4). The sheet steel forms a partial shutter to the concrete and can be folded at its ends to form partial end shutters. The connectors are in both the tension and the compression zone of the beam so that the sheet steel covers and joins both, and during bending the longitudinal shear engendered by the reinforcing bars is equalised from zone to zone across the sheet.

Description

La présente invention concerne de nouveaux dispositifs d'assemblages de structures mixtes composées d'un produit coulable et durcissable, du béton par exemple, armé d'un bac métallique longitudinal en tôle pliée et d'armatures métalliques longitudinales, le dit bac servant de coffrage au produit coulable. The present invention relates to new devices for assembling mixed structures composed of a flowable and hardenable product, concrete for example, reinforced with a longitudinal metal container made of folded sheet metal and longitudinal metal reinforcements, said container serving as formwork. to the pourable product.

De telles structures sont de plus en plus utilisées sous forme de poutres et poteaux préfabriqués et assemblés entre eux sur chantiers pour constituer des ossatures de bâtiments, halls, hangars, immeubles et ouvrages de Génie Civil de toutes sortes. Such structures are more and more used in the form of prefabricated beams and posts and assembled together on building sites to constitute frameworks of buildings, halls, hangars, buildings and works of Civil Engineering of all kinds.

Au niveau des assemblages, du fait de la fragilité en traction, et des risques de fissuration de la plupart des produits coulables, on réalise difficilement des assemblages encastrés permettant entre les éléments assemblés des liaisons hyperstatiques capables de transmettre la totalité des moments fléchissants et des efforts tranchants et normaux. At the level of the assemblies, due to the brittleness in traction, and the risks of cracking of most of the castable products, it is difficult to make embedded assemblies allowing between the assembled elements hyperstatic connections capable of transmitting all the bending moments and forces sharp and normal.

La présente invention a pour objet d'apporter une solution simple et économique à ce problème. Les nouveaux dispositifs d'assemblages de structures mixtes, telles que précédemment définies, sont caractérisées en ce que
a) le dit bac métallique longitudinal en tôle pliée servant de coffrage au dit produit coulable, est prolongé à au moins une de ses extrémités par un caisson métallique épousant intérieurement ou extérieurement au moins partiellement la forme extérieure ou intérieure du dit bac, ceci pour permettre son assemblage avec le dit bac, de façon à constituer un même élément de coffrage dans lequel on dépose ensuite le produit coulable,
b) les dites armatures métalliques longitudinales de renfort sont soudées à une de leurs extrémités à l'intérieur des dits caissons,
c) que les dites extrémités libres des dits caissons sont équipées de moyens d'assemblage permettant de réaliser des liaisons encastrées et fortement hyperstatiques, telles que celles utilisées en charpente métallique.The object of the present invention is to provide a simple and economical solution to this problem. The new devices for assembling mixed structures, as defined above, are characterized in that
a) said longitudinal metal container made of folded sheet metal serving as a formwork for said flowable product, is extended at at least one of its ends by a metal box which conforms internally or externally at least partially to the exterior or interior shape of said container, this to allow its assembly with said tank, so as to constitute the same formwork element in which the pourable product is then deposited,
b) said longitudinal metal reinforcements are welded at one of their ends inside said boxes,
c) that the said free ends of the said boxes are equipped with assembly means making it possible to produce embedded and highly hyperstatic connections, such as those used in metal framework.

Les caissons d'extrémité reprennent ainsi la totalité des efforts transmis par le bac et les armatures longitudinales. The end boxes thus take up all the forces transmitted by the tank and the longitudinal reinforcements.

Pour celà ces caissons sont réalisés en tôle suffisamment épaisse pour la transmission de ces efforts sans déformation notable.For this, these boxes are made of sufficiently thick sheet metal for the transmission of these forces without significant deformation.

Ce dispositif permet d'assembler en particulier des structures extrêmement économiques, constituées de bacs en tale mince, renforcées d'armatures longitudinales souvent importantes, dans lesquelles la cohésion acier-béton au delà des assemblages se fait par des connecteurs fixés intérieurement aux bacs et noyés dans le produit coulable le long des armatures longitudinales de renfort. Dans le cas de ces structures,l'importance des armatures de renfort, la faible épaisseur du bac sont incompatibles avec des liaisons d'assemblage directes, sans caisson d'extrémités, car la faible épaisseur des tôles des bacs ne peut sans déformation locale importante de la tale, assurer la transmission des moments fléchissants dont l'importance est proportionnelle à celle des armatures. This device makes it possible to assemble in particular extremely economical structures, made up of tanks in thin sheets, reinforced with often large longitudinal reinforcements, in which the steel-concrete cohesion beyond the assemblies is achieved by connectors fixed internally to the tanks and embedded in the product which can be poured along the longitudinal reinforcements. In the case of these structures, the importance of the reinforcing reinforcements, the small thickness of the tank are incompatible with direct assembly links, without end box, because the small thickness of the sheets of the tanks cannot without significant local deformation of the tale, ensure the transmission of the bending moments whose importance is proportional to that of the reinforcements.

La figure 5 montre vues en plan les parties métalliques de deux structures mixtes montées, mises à plat horizontalement, produit coulable enlevé. FIG. 5 shows in plan view the metal parts of two mounted mixed structures, laid flat horizontally, cast product removed.

La figure 2 est une coupe transversale partielle AA de la figure 1. Figure 2 is a partial cross section AA of Figure 1.

Se référant aux figures 1 et 2, un bac 1 de structure mixte est prolongé à une de ses extrémités, avant mise en place du produit coulable, par un caisson métallique 2, ceci pour préparer l'assemblage de la dite structure avec une autre structure analogue équipée d'un caisson 2a, apte à assurer la liaison avec le caisson 2. L'épaisseur et la limite élastique de la tôle 3 des caissons 2 et 2a est déterminée pour permettre la reprise par les caissons 2 et 2a de la totalité des moments fléchissants, des efforts normaux et de cisaillement transmis par les bacs 1, les armatures 4 aux bacs la et aux armatures 4a. Le plus généralement les caissons 2 et 2a sont exécutés de façon économique, en tôle pliée en forme de U. Referring to Figures 1 and 2, a tank 1 of mixed structure is extended at one of its ends, before placing the pourable product, by a metal box 2, this to prepare the assembly of said structure with another structure analogous equipped with a box 2a, capable of ensuring the connection with the box 2. The thickness and the elastic limit of the sheet 3 of the boxes 2 and 2a is determined to allow the recovery by the boxes 2 and 2a of all of the bending moments, normal and shear forces transmitted by the tanks 1, the frames 4 to the tanks la and to the frames 4a. Most generally, the boxes 2 and 2a are made economically, in sheet metal folded in a U shape.

La liaison entre bacs 1 et la aux caissons 2 et 2a, s'effectue par boulons 5 et 5a ou soudure 6 et 6a. Les armatures 4 et 4a sont directement soudées en 12 et 12a, à l'intérieur des caissons 2 et 2a. The connection between tanks 1 and the to the boxes 2 and 2a is effected by bolts 5 and 5a or welding 6 and 6a. The frames 4 and 4a are directly welded at 12 and 12a, inside the boxes 2 and 2a.

Les efforts de cisaillement ou de glissement longitudinal des armatures 4 et 4a, à l'intérieur des bacs 1 et la sont repris par action de connecteurs 11 et lia noyés dans le produit coulable et fixés à une de leurs extrémités aux bacs 1 et la. The shearing or longitudinal sliding forces of the reinforcements 4 and 4a inside the tanks 1 and la are taken up by the action of connectors 11 and 11a embedded in the flowable product and fixed at one of their ends to the tanks 1 and la.

Les extrémités restant libres,avant assemblage des structures, des caissons 2 et 2a sont équipées de dispositifs d'assemblages analogues à ceux utilisés en charpente métallique, par exemple des assemblages par soudure 7 ou par boulons 8 avec contreplaque 9.  The ends remaining free, before assembling the structures, of the boxes 2 and 2a are equipped with assembly devices similar to those used in metal frame, for example assemblies by welding 7 or by bolts 8 with plywood 9.

Après assemblage le bac 1 et le caisson 2 sont mis à plat, avec les ailes 10 dirigées vers le haut, pour constituer un élément de coffrage apte à recevoir le produit coulable, après mise en place de réservations, au niveau des éléments d'assemblage telles que les soudures 7, les boulons 8, les contreplaques 9 de façon que ces éléments restent toujours accessibles au moment du montage des structures entre elles. After assembly, the tank 1 and the box 2 are laid flat, with the wings 10 facing upwards, to form a formwork element capable of receiving the flowable product, after placing reservations, at the level of the assembly elements. such as the welds 7, the bolts 8, the plywoods 9 so that these elements always remain accessible when the structures are assembled together.

Après montage, ces réservations sont comblées par du produit coulable pour ne pas interrompre la continuité de matière entre les structures. L'ensemble des structures ainsi reliées par liaisons à caissons, telles que décrites dans la présente invention peuvent constituer les ossatures de bâtiments et d'ouvrages de Génie Civil de toutes sortes. After assembly, these reservations are filled with flowable product so as not to interrupt the continuity of material between the structures. All the structures thus connected by box connections, as described in the present invention can constitute the frameworks of buildings and civil engineering works of all kinds.

La présente invention ntest pas limitée aux exemples de réalisation qui viennent d'être décrits, elle est au contraire susceptible de variantes et de modifications tombant dans ltes- prit et le champ d'application des revendications annexées.  The present invention is not limited to the exemplary embodiments which have just been described, it is on the contrary liable to variants and modifications falling within the scope and scope of the appended claims.

Claims (1)

REVENDICATIONCLAIM 1. Dispositifs d'assemblage de structures mixtes composées d'un élément coulable et durcissable, du béton par exemple, armées d'un bac longitudinal en tôle métallique pliée servant de coffrage au dit produit coulable et comprenant des armatures longitudinales métalliques de renfort noyées dans le dit produit coulable, les dits dispositifs étant caractérisés en ce que : a) le dit bac est prolongé à au moins une de ses extrémités par un caisson métallique épousant intérieurement ou extérieurement,au moins partiellement,la forme extérieure ou intérieure du dit bac, ceci pour permettre l'assemblage entre eux des dits bacs et caissons et à constituer conjointement un élément de coffrage apte à recevoir le dit produit coulable ; b) les dites armatures métalliques longitudinales de renfort sont soudées à une de leurs extrémités à l'intérieur des dits caissons ; c) les dites extrémités libres des dits caissons sont équipés de moyens d'assemblage analogues à ceux utilisés en charpente métallique, ceci,pour permettre entre structures,équipées de caissons analogues,de réaliser des liaisons encastrées et à constituer ainsi les ossatures de tout type de bâtiments et d'ouvrages de Génie 1. Devices for assembling mixed structures composed of a flowable and hardenable element, for example of concrete, armed with a longitudinal bent in folded metal sheet serving as formwork for said flowable product and comprising longitudinal metallic reinforcements of reinforcement embedded in the said flowable product, the said devices being characterized in that: a) the said container is extended at at least one of its ends by a metal box which conforms internally or externally, at least partially, to the external or internal shape of the said container, this to allow the assembly between them of said tanks and boxes and to jointly constitute a formwork element capable of receiving said flowable product; b) said longitudinal metal reinforcements are welded at one of their ends inside said boxes; c) said free ends of said boxes are equipped with assembly means similar to those used in metal frame, this, to allow between structures, equipped with similar boxes, to make embedded connections and thus constitute the frames of any type of buildings and engineering works Civil. Civil.
FR8017193A 1979-10-18 1980-08-04 Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress Granted FR2487883A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR8017193A FR2487883A1 (en) 1980-08-04 1980-08-04 Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress
CA000362127A CA1177274A (en) 1979-10-18 1980-10-10 Thin plate structural beam for concrete building construction, with connectors seated so as to distribute shearing moments from transverse reinforcing elements
AU63903/80A AU6390380A (en) 1979-10-18 1980-10-15 Beams and frames comprised of thin iron sheet plates associated to a castable and hardenable veil
MA19178A MA18978A1 (en) 1979-10-18 1980-10-15 BEAMS AND STRUCTURES MADE OF THIN SHEET MATERIALS ASSOCIATED WITH A CASABLE AND CURABLE VEIL
IT25346/80A IT1150047B (en) 1979-10-18 1980-10-15 BEAMS AND STRUCTURES COMPOSED OF THIN SHEETS ASSOCIATED WITH COLABLE AND HARDENING WINGS
PCT/FR1980/000150 WO1981001162A1 (en) 1979-10-18 1980-10-15 Beams and frames comprised of thin iron sheet plates associated to a castable and hardenable veil
ES495988A ES8106034A1 (en) 1979-10-18 1980-10-16 Beams and frames comprised of thin iron sheet plates associated to a castable and hardenable veil.
AR282896A AR228264A1 (en) 1979-10-18 1980-10-16 IMPROVEMENTS IN BEAMS AND COMPOSITE STRUCTURES USED IN LONGITUDINAL FLEXION IN ANY TYPE OF CONSTRUCTION
EP80901942A EP0038334A1 (en) 1979-10-18 1981-05-04 Beams and frames comprised of thin iron sheet plates associated to a castable and hardenable veil
OA57411BISD OA08942A (en) 1979-10-18 1981-05-29 Beams and structures made of thin sheets associated with a pourable and hardenable veil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8017193A FR2487883A1 (en) 1980-08-04 1980-08-04 Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress

Publications (2)

Publication Number Publication Date
FR2487883A1 true FR2487883A1 (en) 1982-02-05
FR2487883B1 FR2487883B1 (en) 1983-09-23

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FR8017193A Granted FR2487883A1 (en) 1979-10-18 1980-08-04 Reinforced concrete structural beams - are used in bending and have thin sheet steel side plates to equalise stress

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025614A (en) * 1962-08-11 1966-04-14 Laing Constr Ltd John Improvements in connectors for structural members

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1025614A (en) * 1962-08-11 1966-04-14 Laing Constr Ltd John Improvements in connectors for structural members

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Publication number Publication date
FR2487883B1 (en) 1983-09-23

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