EP2340337A1 - Systeme d'accrochage de poutre a corniere de reception conformee en came - Google Patents
Systeme d'accrochage de poutre a corniere de reception conformee en cameInfo
- Publication number
- EP2340337A1 EP2340337A1 EP08805618A EP08805618A EP2340337A1 EP 2340337 A1 EP2340337 A1 EP 2340337A1 EP 08805618 A EP08805618 A EP 08805618A EP 08805618 A EP08805618 A EP 08805618A EP 2340337 A1 EP2340337 A1 EP 2340337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- attachment system
- angle
- receiving
- posts
- 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.)
- Withdrawn
Links
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
- E04B1/36—Bearings or like supports allowing movement
-
- 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
- E04B2001/2487—Portico type structures
Definitions
- the present invention relates to a beam attachment system and, in particular, a long-span beam.
- the beams and, in particular, the long-span beams have many applications, particularly in the field of large span structures, for the construction of buildings and structures.
- Examples of such structures are warehouses, hypermarkets, aircraft halls, sports centers, buildings on stilts or high-rise, car parks, bridges and footbridges.
- the document FR 2 61 1 781 discloses a system for ensuring the support and attachment of long-span beams. Fastening is done on metal support posts, each post being provided with at least one connecting rod or fulcrum hinged at its lower end on a hinge axis integral with the corresponding post.
- the upper end of the bracing leg is provided with a receiving bracket with two wings at right angles, on which comes to wear a wedge end secured to the end of a beam through parts contact which is provided with said tip. Thanks to this system, the vertical reaction of the weight of the beam is transferred in the center of the corresponding leg. This effort in turn creates a horizontal force of longitudinal stress in the corresponding long-span beam, intended to support a structure.
- Such a system however, has certain disadvantages, especially in the case of asymmetrical load of the beam.
- the present invention therefore aims to prevent instabilities of the system, especially in case of asymmetrical load of the beam.
- the invention relates to a beam attachment system comprising two posts, a beam and two connecting rods, each having a receiving angle, in which each of the posts is connected to the beam by one of the connecting rods, each of said connecting rods. being hinged, on the one hand, to the post that it connects to the beam and, on the other hand, to the beam through its receiving angle, which receives one end of the beam; and at least one of the receiving angles is cam-shaped and the corresponding end of the beam is shaped as a cam follower.
- the invention comprises one or more of the following features:
- the receiving angle of one of the connecting rods comprises: a support wing on a corresponding end of the beam; and a support wing of a corresponding end of the beam, the receiving angle having a concave section between said wings;
- the support wing and the corresponding end of the beam have a beveled section
- the plane of the supporting wing supporting the end of the beam and the plane of the supporting wing pressing on the end of the beam have an angle of less than 90 degrees:
- the plane of the supporting wing supporting the end of the beam and the plane of the supporting wing pressing on the end of the beam have an angle of between 60 and 90 degrees;
- the attachment system further comprises a support shoe of the corresponding end of the beam, the support wing further having a housing for receiving the support shoe, the shoe sliding parallel to an axis of articulation of the connecting rod with the beam;
- the attachment system according to the invention further comprises a support shoe, the support wing further having a housing for receiving a support shoe on the corresponding end of the beam;
- At least one of the ends of the beam is provided with a force distribution plate, received in the corresponding angle, and shaped according to the conformation of the cam bracket;
- the fastening system according to the invention further comprises at least one tie rod connected to the posts and to the beam so that the poles are solicited in approximation by the tie rod.
- FIG. a schematic illustration of a beam attachment system according to one embodiment of the invention
- FIG. 2 a front view in section showing the upper part of a pole connected to two beams via connecting rods, according to one embodiment of the invention
- FIG. 3 a detailed view of Figure 2, showing the articulation of a rod with a beam.
- the invention thus proposes a beam fastening system in which the ends of the beam are received in angles of reception of the connecting rods (or bow legs -boutement), and wherein a receiving angle is shaped cam (the corresponding end of the beam being shaped cam follower, instead of for example a corner tip).
- a receiving angle is shaped cam (the corresponding end of the beam being shaped cam follower, instead of for example a corner tip).
- the articulation of the beam with the rods is thus performed more regularly than in the known system of the prior art.
- the system relaxes by rotation of the end of the beam in the angle, without jamming effect.
- resort to a cam profile to adjust the resistance to rotation of the end of the beam in the angle, depending on the amplitude of this rotation.
- FIG. 1 is a schematic illustration of an attachment system according to one embodiment of the invention.
- the figure shows a bank post 14 as well as several posts 5a, 5b, and beams 3a, 3b, 3c.
- tie rods 9a, 9b, 9c are provided, as shown in the figure.
- the posts 5a, 5b are, in this example, embedded in the ground 4 (that is to say in the foundation) and form a metal framework for fastening the beams.
- the general reference number 3 designates a beam
- the number 9 designates a tie rod
- the number 5 designates a frame stud other than a rim pole.
- the additional reference letters a, b, c designate different sections of the frame.
- a beam connects two posts using a support system which will be described later.
- the tie rod (optional) is a part of the system designed to withstand traction. It can for example be fixed at the head of a pole and be made in the form of a cable or a tight shaft.
- the beam attachment system 1 comprises in this case the two posts 5a, 5b, a beam 3b and at least one tie 9b.
- the tie rod connects at least one of the posts 5a, 5b, so that the two posts 5a, 5b are biased by the beam 3b and urged closer by the tie 9b.
- the biasing by the tie rod 9b at least partially offsets the moment exerted by a beam on the posts and further creates an additional longitudinal stress in the beam.
- This system thus makes it possible, on the one hand, to lengthen the span of the beam and, on the other hand, to take back part of the stress exerted on a pole. It also helps to preserve the stability of the system.
- Figure 2 is a front view in section showing the upper part of a pole connected to two beams via connecting rods.
- the figure shows a pole 5a, two beams 3a, 3b, a vertical wedge 17, two connecting rods 13a, 13b, two distribution plates 19a, 19b (shown very schematically here) and two tie rods 9a, 9b.
- An element a of each pair of elements a, b above is located to the left of the pole 5a, the other element to the right of the pole.
- the pole 5a is embedded in the ground 4 in this example and, more particularly, in the foundation.
- Two tie rods 9a, 9b are preferably fixed at the top of the pole 5a, to the left and to the right, respectively.
- only one tie is fixed at the top of the pole 5a.
- a same tie can then extend along a frame comprising several poles.
- Such a pull structure has the advantage of distributing the stress forces, as well as the recovery of these forces, along the frame. It follows a better cohesion of the frame.
- the pole 5a is connected to the beams 3a, 3b through an arc leg - boutement or rod 13a, 13b articulated on the one hand to the pole 5a that it connects to a beam and secondly to a beam 3a, 3b.
- the articulation at the pole 5a can be achieved by means of a pivot connection 14a, 14b or, alternatively, an axis.
- the joint at the level of the beam is achieved by means of a receiving bracket 18a, 18b, formed on the head of the rod 13a, 13b.
- One end of the beam (for example an angle of tip 19 of the beam) can be hinged in the bracket 18a, 18b for receiving the corresponding connecting rod, so as to form a hinged connection.
- the end angle can be made in the form of a distribution plate 19a. 19b.
- This plate attached to a beam 3a, 3b makes it possible, on the one hand, to support this beam and, on the other hand, to distribute the reaction of the support in this beam.
- the end angles are for example fixed by gluing, bolting or riveting. on a lower corner of the corresponding beam.
- FIG 3 is a detailed view (and partial) of Figure 2, showing more precisely the articulation of a rod 13 with a beam 19, according to one embodiment of the invention.
- a connecting rod 13 the head 18 (the receiving angle) of the connecting rod and an end angle 19 of the beam.
- the end angle 19 of the beam is here made in the form of a distribution plate 19, as described above. Thanks to the rod system shown, a post can be connected to the beam via the connecting rod 13, which is articulated on the one hand to the pole that connects to the beam and, on the other hand, to the beam through its receiving angle 18. This angle 18 receives one end of the beam, that is to say here the distribution plate 19.
- the mass of the beam (increased if necessary loads structures that it supports) stresses the connecting rod 13 in rotation, in the direction of clockwise with respect to the connecting rod 13 shown in FIG. 3.
- the receiving angle 18 is shaped as a cam. Seen in section, its profile is curvilinear, so as to progressively transform a rotational movement of the rod in a force on the corresponding end of the beam (that is to say, the plate 19 here).
- a known prior art system used right angle brackets, receiving a wedge-shaped beam end.
- the end 19 of the beam is here shaped cam follower.
- the progressive transformation of a possible rotation of the connecting rod 19 in a compressive force makes it possible to avoid a jamming phenomenon, during the relaxation of the system.
- the rotation of the connecting rod that engenders the weight of the beam is progressively transformed into the compressive force of the beam. This avoids jamming phenomena that can give rise to a sudden release of stress.
- the relaxation of the system is more progressive, especially when the beam is loaded asymmetrically or is found lightened by an uprising due for example to the wind, or even solicited by expansion or retraction efforts. As a result, the stability of the system is improved.
- the angle 18 of reception of the connecting rod nevertheless typically comprises a wing 181 (or front) bearing on the corresponding end 19, 191 of the plate 19. It also comprises a wing 182 of support of the end 19, 192 of the plate 19.
- This arrangement makes it possible to transform the reaction to the weight and loads of the beam (at the support 182 - 192) compressive force at the support 181 - 191.
- the connecting rod head has a concave section 184 and, conversely, the plate 19 has a convex section 194.
- the sections 184 and 194 give rise to a cam and follower conformation. cam.
- the support wing 182 further having a housing. 186, for receiving a support shoe Sl of the corresponding end 192 of the plate.
- This shoe Sl is a point of passage forced efforts. However, it allows a better horizontal sliding of the plate 19.
- This shoe is for example shaped so as to optimize the contact with the corresponding part of the plate: the part in look of the plate is substantially flat, with a slight rounding, so as to promote sliding.
- the exact shape of the hoof can also depend on the material used.
- This shoe S 1 can also slide parallel to the axis of articulation of the rod with the beam, that is to say perpendicular to the plane of Figure 3 here. In this way, a virtual center is obtained, which optimizes the positioning of the plate 19 in the bracket 18, in operation.
- the support wing 181 may have a housing for receiving a support shoe S2 on the corresponding end 191 of the plate, allowing vertical sliding of the plate, if necessary. If necessary, the shoe S2 can slide so as to obtain a second virtual center at the support.
- the support wing 182, 183 and the corresponding end 192, 193 of the beam have a section 183 beveled, that is to say slightly raised towards the end of the wing of 182.
- a horizontal sliding of the plate 19 would cause an uprising at the bevel.
- Such a conformation makes it possible to confine the articulation of the connecting rod and the plate around a position of equilibrium. Indeed, the lifting due to the bevel slows the rise of the rod (in the trigonometrical direction), with respect to the other points of articulation at the other end of the beam.
- Such a conformation allows the fastening system to react better in particular to an asymmetrical load of the beam.
- the support plane 183 of the support wing and the support plane of the support wing 181 have, seen section, an angle less than 90 degrees, hence the aforementioned bevel section.
- this angle is less than 90 degrees, for example between 60 and 90 degrees. It is for example chosen so as to optimize the confinement at the level of the joint.
- the angle referred to above is the angle complementary to the angle ⁇ shown in FIG.
- the beam is subdivided into two or more side portions of the beam and the distribution plates are subdivided into two or more plates.
- Each of these two plates can be preassembled on a lateral part of the beam.
- the assembly phase of the beam only requires assembly directly by fixing the side portions of the beam, for example by means of bolts.
- the pre-assembly phase is a factory phase, it can be easily controlled. Possible errors during assembly of the beam are thus discarded.
- the assembly of the beam on a construction site is substantially simplified.
- the beam is subdivided into three or more longitudinal segments, as is known in the art. Taken separately, these segments are more manageable than a single beam, which greatly simplifies the logistics relating to the delivery of the hanging system on a construction site. It is thus possible, if necessary, to provide as many segments of beams as is necessary to avoid having to resort to an exceptional transport.
- the material used for the beam may be glulam or, alternatively, a welded reconstituted steel profile may be used.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2008/000728 WO2009144387A1 (fr) | 2008-05-28 | 2008-05-28 | Systeme d'accrochage de poutre a corniere de reception conformee en came |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2340337A1 true EP2340337A1 (fr) | 2011-07-06 |
Family
ID=40257589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08805618A Withdrawn EP2340337A1 (fr) | 2008-05-28 | 2008-05-28 | Systeme d'accrochage de poutre a corniere de reception conformee en came |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2340337A1 (fr) |
WO (1) | WO2009144387A1 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE516495A (fr) * | ||||
FR2846681B1 (fr) * | 2002-11-06 | 2005-06-03 | Daniel Pitault | Structure porteuse modulaire |
FR2857038B1 (fr) * | 2003-07-03 | 2007-03-30 | Marc Edouard Irigoyen | Systeme d'accrochage de poutre |
-
2008
- 2008-05-28 WO PCT/FR2008/000728 patent/WO2009144387A1/fr active Application Filing
- 2008-05-28 EP EP08805618A patent/EP2340337A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009144387A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009144387A1 (fr) | 2009-12-03 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: IRIGOYEN, MARC Inventor name: CRUBILE, PHILIPPE |
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DAX | Request for extension of the european patent (deleted) | ||
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