FR2736667A1 - DEVICE FOR CONNECTING THE CORE OF A METAL PROFILE TO CONCRETE IN A MIXED CONSTRUCTION - Google Patents
DEVICE FOR CONNECTING THE CORE OF A METAL PROFILE TO CONCRETE IN A MIXED CONSTRUCTION Download PDFInfo
- Publication number
- FR2736667A1 FR2736667A1 FR9508697A FR9508697A FR2736667A1 FR 2736667 A1 FR2736667 A1 FR 2736667A1 FR 9508697 A FR9508697 A FR 9508697A FR 9508697 A FR9508697 A FR 9508697A FR 2736667 A1 FR2736667 A1 FR 2736667A1
- Authority
- FR
- France
- Prior art keywords
- core
- distributor
- concrete
- frame
- contact
- 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.)
- Granted
Links
Classifications
-
- 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
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
DESCRIPTION
La présente invention concerne un dispositif pour connecter l'âme d'un profilé métallique au béton dans une construction mixte.DESCRIPTION
The present invention relates to a device for connecting the core of a metal profile to concrete in a mixed construction.
Dans le domaine de la construction mixte acier béton, la connexion est obtenue par la fixation de butées: goujons, cornières, arceaux.. ayant pour fonction d'équilibrer le champ de contraintes de cisaillement longitudinal à l'interface acier béton. Ces connexions possèdent généralement des formes et des dimensions permettant une diffusion la moins agressive possible des contraintes dans le béton. In the field of mixed concrete steel construction, the connection is obtained by the fixing of stops: studs, angles, hoops .. whose function is to balance the field of longitudinal shear stresses at the concrete steel interface. These connections generally have shapes and dimensions allowing the least aggressive diffusion of stresses in concrete.
Généralement ces butées sont fixées sur la semelle supérieure des profilés.Generally these stops are fixed on the upper sole of the profiles.
Par ailleurs la section mixte constituée d'une dalle béton et d'un profilé métallique en forme de T dont l'âme est ajourée est connue. In addition, the mixed section consisting of a concrete slab and a T-shaped metal profile whose core is perforated is known.
La découpe de l'âme entraîne une discontinuité de l'acier du profilé dans le béton. La tranche de l'âme métallique diffuse alors les contraintes de cisaillement longitudinales dans le béton.The cutting of the core causes a discontinuity of the steel of the profile in the concrete. The edge of the metallic core then diffuses the longitudinal shear stresses in the concrete.
Le brevet européen n0 E 0 369 914 du 16 novembre 1989 divulgue que l'encoche ménagée dans la tranche de la découpe de l'âme permet de placer une ou plusieurs armatures jouant le rôle de connecteur. European patent no. E 0 369 914 of November 16, 1989 discloses that the notch formed in the edge of the cut-out of the core makes it possible to place one or more reinforcements playing the role of connector.
Une première campagne d'essais de type pusch-out a permis de caractériser le comportement d'une découpe de l'âme en queue d'arronde, figure :{*
Les essais ont consisté à établir la loi de comportement de l'effort par rapport au glissement longitudinal, figure 11 et à observer le mode de ruine suivant: - Seule la résistance au cisaillement du béton intervient dans le comportement mécanique du connecteur.A first campaign of pusch-out tests made it possible to characterize the behavior of a cutting of the core in a dovetail, figure: {*
The tests consisted in establishing the law of behavior of the force compared to the longitudinal sliding, figure 11 and in observing the following mode of failure: - Only the shear strength of the concrete intervenes in the mechanical behavior of the connector.
La courbe fait apparaître deux domaines: - un premier domaine que l'on peut qualifier d' état limite de service est caractérisé par la formation d'une pyramide (10) délimitée par des plans de cisaillement dont le sommet est issu de la tranche (11) de l'âme (1). Ce domaine est limité par une charge correspondant à environ 60% de la charge de ruine, en dessous de cette charge la fissuration n'est pas perceptible. The curve shows two areas: - a first area which can be described as the service limit state is characterized by the formation of a pyramid (10) delimited by shear planes whose apex comes from the edge ( 11) of the soul (1). This area is limited by a load corresponding to approximately 60% of the ruin load, below this load the cracking is not perceptible.
- un deuxième domaine que l'on peut qualifier d'état limite ultime caractérisé par la formation d'un plan (12) de cisaillement dépendant exclusivement des butées. - A second area which can be described as ultimate limit state characterized by the formation of a shear plane (12) depending exclusively on the stops.
Partant de ces constatations, il apparaît que si les contraintes de cisaillement de la masse de béton devant la tranche de l'âme étaient maîtrisées et que l'aire de cisaillement pouvait être augmentée l'utilisation d'une telle connexion serait économique. On the basis of these observations, it appears that if the shear stresses of the mass of concrete in front of the edge of the core were controlled and that the shear area could be increased, the use of such a connection would be economical.
La deuxième campagne d'essais pusch-out réalisée sur des corps d'épreuves équipés du nouveau dispositif objet de la présente invention ont permi de mettre en évidence les plans de cisaillement dans le béton et ont apporté des charges de ruine d'environ 1350 kN alors que les premiers essais sans ledit dispositif se situaient vers 800 kN. The second pusch-out test campaign carried out on test bodies equipped with the new device which is the subject of the present invention made it possible to highlight the shear planes in the concrete and brought ruin loads of approximately 1350 kN whereas the first tests without said device were around 800 kN.
Donc avec des géométries et des matériaux identiques la présence du dispositif de l'invention permet un gain de résistance de l'ordre de 70%. So with identical geometries and materials the presence of the device of the invention allows a gain in resistance of the order of 70%.
Le dispositif selon l'invention permet la connexion acier béton sans fixation de connecteurs spécifiques sur la poutre en acier mais par simple contact poutre armature de béton armé. L'invention permet de maîtriser les plans de rupture par cisaillement du béton. The device according to the invention allows the connection of concrete steel without fixing specific connectors on the steel beam but by simple contact with the reinforced concrete reinforcement beam. The invention makes it possible to control the plans of rupture by shearing of the concrete.
la figure 1 représente en coupe longitudinale le dispositif la figure 2 représente la liaison diffuseur répartiteur la figure 3 représente la coupe transversale du dispositif la figure 4 représente en perspective le dispositif la figure 5 représente une variante du dispositif monobloc la figure 6 représente le dispositif monobloc sur découpe queue d'aronde.Figure 1 shows in longitudinal section the device Figure 2 shows the distributor diffuser link Figure 3 shows the cross section of the device Figure 4 shows in perspective the device Figure 5 shows a variant of the one-piece device Figure 6 shows the one-piece device on dovetail cutout.
La contrainte de cisaillement engendre par l'âme (1) du profilé est dans un premier temps transmise par simple contact à un diffuseur (3) constitué par une ou plusieurs barres à haute adhérence suffisamment rigides et s'appuyant en au moins deux points sur un répartiteur (4) figure 2. The shear stress generated by the web (1) of the profile is firstly transmitted by simple contact to a diffuser (3) constituted by one or more high-grip bars sufficiently rigid and supported at at least two points on a distributor (4) figure 2.
Le répartiteur (4) est conçu de manière à pouvoir être en contact sur chaque côté du cadre (5a) figure 3. The distributor (4) is designed so that it can be in contact on each side of the frame (5a) in Figure 3.
La contrainte est alors répartie sur le périmètre du cadre (5a). The stress is then distributed over the perimeter of the frame (5a).
L'analyse des essais pusch-out efectués avec le dispositif de la présente invention montrent qu'il y a rupture par cisaillement sur le plan enveloppe ou périphérique du volume de béton limité par les cadres (5a, 5b, 5c) figure 4. The analysis of the pusch-out tests carried out with the device of the present invention show that there is rupture by shearing on the envelope or peripheral plane of the volume of concrete limited by the frames (5a, 5b, 5c) Figure 4.
le comportement de la connexion ainsi obtenue peut être qualifiée de rigide au sens de l'Eurocode 4 partie 1-NFP 22-391-DAN. the behavior of the connection thus obtained can be described as rigid within the meaning of Eurocode 4 part 1-NFP 22-391-DAN.
Le comportement global de la connexion acier béton peut ainsi être modélisé et quantifié. The overall behavior of the steel-concrete connection can thus be modeled and quantified.
Les armatures peuvent être façonnées de manière à ce que les éléments (4 et 5a) ou (3, 4 et 5a) ou (3, 4, Sa ,5b... ) figure 5 soient réalisés en une seule pièce pour constituer un ensemble monobloc. The frames can be shaped so that the elements (4 and 5a) or (3, 4 and 5a) or (3, 4, Sa, 5b ...) in Figure 5 are made in one piece to form a set monobloc.
L'ensemble peut être conçu de manière symétrique (3, 4, 5a ,5b....5b, 5a, 4, 3, ) dans ce cas les extrémitées sont en contact avec les tranches du profilé qui sont vis à vis, L'ensemble confère un comportement mécanique symétrique à la structure mixte. The assembly can be designed symmetrically (3, 4, 5a, 5b .... 5b, 5a, 4, 3,) in this case the ends are in contact with the sections of the profile which are opposite, L he assembly gives a symmetrical mechanical behavior to the mixed structure.
Un procédé de mise en place de la connexion consistant à jouer sur la déformation élastique de l'ensemble armature monobloc défini cidessus permet de comprimer et de glisser l'ensemble dans la découpe de l'âme entre les tranches de l'âme vis à vis, le contact étant établi par retour élastique du monobloc. A method of setting up the connection consisting in playing on the elastic deformation of the one-piece armature assembly defined above makes it possible to compress and slide the assembly in the cutout of the core between the edges of the core opposite. , the contact being established by elastic return of the monoblock.
Le clavetage de l'ensemble monobloc peut s'effectuer par l'engagement des armatures sur un profil particulier de la découpe par exemple un tenon, ou dans une encoche spécialement découpée dans la tranche de l'âme. The keying of the monobloc assembly can be carried out by the engagement of the reinforcements on a particular profile of the cut, for example a tenon, or in a notch specially cut in the edge of the core.
Claims (9)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9508697A FR2736667B1 (en) | 1995-07-13 | 1995-07-13 | DEVICE FOR CONNECTING THE CORE OF A METAL PROFILE TO CONCRETE IN A MIXED CONSTRUCTION |
EP96925771A EP0888484A1 (en) | 1995-07-13 | 1996-07-11 | Device for joining the web of a metal section to concrete in a composite construction |
CA 2227027 CA2227027A1 (en) | 1995-07-13 | 1996-07-11 | Device for joining the web of a metal section to concrete in a composite construction |
PCT/FR1996/001080 WO1997003260A1 (en) | 1995-07-13 | 1996-07-11 | Device for joining the web of a metal section to concrete in a composite construction |
AU66170/96A AU6617096A (en) | 1995-07-13 | 1996-07-11 | Device for joining the web of a metal section to concrete in a composite construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9508697A FR2736667B1 (en) | 1995-07-13 | 1995-07-13 | DEVICE FOR CONNECTING THE CORE OF A METAL PROFILE TO CONCRETE IN A MIXED CONSTRUCTION |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2736667A1 true FR2736667A1 (en) | 1997-01-17 |
FR2736667B1 FR2736667B1 (en) | 1997-08-14 |
Family
ID=9481110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9508697A Expired - Fee Related FR2736667B1 (en) | 1995-07-13 | 1995-07-13 | DEVICE FOR CONNECTING THE CORE OF A METAL PROFILE TO CONCRETE IN A MIXED CONSTRUCTION |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0888484A1 (en) |
AU (1) | AU6617096A (en) |
CA (1) | CA2227027A1 (en) |
FR (1) | FR2736667B1 (en) |
WO (1) | WO1997003260A1 (en) |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1648801A (en) * | 1926-02-06 | 1927-11-08 | William A Fritz | Method of repairing metal beams |
FR716770A (en) * | 1931-05-08 | 1931-12-28 | Reinforcement process for metal structures | |
DE821503C (en) * | 1950-05-14 | 1951-11-19 | Fried Krupp Stahlbau Rheinhaus | Anchorage between steel girders and prestressed concrete slabs of composite structures |
FR1015798A (en) * | 1944-06-09 | 1952-10-23 | New floor construction process | |
FR1332590A (en) * | 1962-05-09 | 1963-07-19 | connecting bracket for joist-concrete slab complex | |
GB1117111A (en) * | 1963-12-16 | 1968-06-12 | Christiani And Nielsen Ltd | Improvements in or relating to composite steel and concrete structures |
GB1431191A (en) * | 1973-04-18 | 1976-04-07 | Taylor R | Composite and prestressed concrere structures |
EP0086966A1 (en) * | 1982-02-08 | 1983-08-31 | Irmfried Brendel | Reinforced concrete composite beam |
EP0133565A2 (en) * | 1983-08-12 | 1985-02-27 | Arbed S.A. | Composite section |
DE3503410A1 (en) * | 1984-02-07 | 1985-08-08 | Irmfried Dipl.-Ing. 7847 Badenweiler Brendel | Composite steel girder |
EP0215148A1 (en) * | 1985-09-17 | 1987-03-25 | Wolfhart Dr.-Ing. Andrä | Connecting means for a composite concrete supporting construction |
EP0369914A1 (en) * | 1988-11-16 | 1990-05-23 | Centre D'etudes Techniques De L'equipement De L'est | Method for joining a matrix material to a functional support, and devices manufactured according to this method |
-
1995
- 1995-07-13 FR FR9508697A patent/FR2736667B1/en not_active Expired - Fee Related
-
1996
- 1996-07-11 CA CA 2227027 patent/CA2227027A1/en not_active Abandoned
- 1996-07-11 EP EP96925771A patent/EP0888484A1/en not_active Withdrawn
- 1996-07-11 WO PCT/FR1996/001080 patent/WO1997003260A1/en not_active Application Discontinuation
- 1996-07-11 AU AU66170/96A patent/AU6617096A/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1648801A (en) * | 1926-02-06 | 1927-11-08 | William A Fritz | Method of repairing metal beams |
FR716770A (en) * | 1931-05-08 | 1931-12-28 | Reinforcement process for metal structures | |
FR1015798A (en) * | 1944-06-09 | 1952-10-23 | New floor construction process | |
DE821503C (en) * | 1950-05-14 | 1951-11-19 | Fried Krupp Stahlbau Rheinhaus | Anchorage between steel girders and prestressed concrete slabs of composite structures |
FR1332590A (en) * | 1962-05-09 | 1963-07-19 | connecting bracket for joist-concrete slab complex | |
GB1117111A (en) * | 1963-12-16 | 1968-06-12 | Christiani And Nielsen Ltd | Improvements in or relating to composite steel and concrete structures |
GB1431191A (en) * | 1973-04-18 | 1976-04-07 | Taylor R | Composite and prestressed concrere structures |
EP0086966A1 (en) * | 1982-02-08 | 1983-08-31 | Irmfried Brendel | Reinforced concrete composite beam |
EP0133565A2 (en) * | 1983-08-12 | 1985-02-27 | Arbed S.A. | Composite section |
DE3503410A1 (en) * | 1984-02-07 | 1985-08-08 | Irmfried Dipl.-Ing. 7847 Badenweiler Brendel | Composite steel girder |
EP0215148A1 (en) * | 1985-09-17 | 1987-03-25 | Wolfhart Dr.-Ing. Andrä | Connecting means for a composite concrete supporting construction |
EP0369914A1 (en) * | 1988-11-16 | 1990-05-23 | Centre D'etudes Techniques De L'equipement De L'est | Method for joining a matrix material to a functional support, and devices manufactured according to this method |
Also Published As
Publication number | Publication date |
---|---|
CA2227027A1 (en) | 1997-01-30 |
FR2736667B1 (en) | 1997-08-14 |
WO1997003260A1 (en) | 1997-01-30 |
EP0888484A1 (en) | 1999-01-07 |
AU6617096A (en) | 1997-02-10 |
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Legal Events
Date | Code | Title | Description |
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ST | Notification of lapse |