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
• • 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
  • E04B2001/2472—Elongated load-supporting part formed from a number of parallel profiles
• • 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
• • 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
  • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
  • E04B2001/3583—Extraordinary methods of construction, e.g. lift-slab, jack-block using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure

Definitions

• the present invention relates to a system for attaching a beam and, in particular, a long-span beam.
• Beams and, in particular, long-span beams have many applications, in particular in the field of structures with large spans, for the construction of buildings and engineering structures. Examples of such structures are warehouses, hypermarkets, aircraft halls, sports centers, buildings on stilts or tall buildings, parking lots, bridges and walkways.
• FR 2 611 781 discloses a system for ensuring the support and attachment of long-span beams. The attachment is done on metal support posts, each post being provided with at least one bracing leg articulated at its lower end on a hinge pin secured to the corresponding post.
• the upper end of the bracing leg is provided with a receiving angle iron on which comes a bearing end-piece secured to the end of a long-span beam by means of contact parts, the provided with said tip.
• the subject of the invention is a beam fastening system comprising two posts, a beam and at least one tie rod, in which the posts are biased apart by the beam and biased together by the tie rod.
• the invention comprises one or more of the following characteristics: - the beam is connected to the tie rod; - The beam and the tie rod are mounted with relative sliding in a finite sliding portion; - sleeves mounted on the tie delimit the finished sliding portion; - The beam comprises at least two lateral parts between which a tie passage is formed; - the beam is supported by the tie; - The beam comprises several longitudinal segments; each of the posts is connected to the beam by means of a connecting rod, the connecting rod being articulated on the one hand to the post which it connects to the beam and on the other hand to the beam; - one of the posts is a shore post.
• FIG. 1 a schematic illustration of the attachment system according to the invention
• - Figure 2 a front view in section showing the upper part of a post connected to two beams via connecting rods
• - Figure 3 a top view of the elements shown in Figure 2
• - Figure 4 a partial front view of a tie fixed at the head of a post and at one end of a beam
• - Figure 5 cross-sectional view of a beam, at a central section of the beam
• - Figure 6 a partial sectional view, along a longitudinal section of the beam, at its central part
• - Figure 7 a front view, representing a beam intended to be mounted in the attachment system
• the invention provides a beam attachment system comprising two posts, a beam and at least one tie rod, in which the posts are biased apart by the beam and biased together by the tie rod.
• FIG. 1 is a schematic illustration of the attachment system according to the invention.
• the figure shows an edge post 14 as well as several posts 5a, 5b, beams 3a, 3b, 3c and tie rods 9a, 9b, 9c.
• the posts 5a, 5b are embedded in the ground 4 (that is to say in the foundation) and form a metal frame intended for the attachment of the beams.
• the general reference number 3 designates a beam
• the number 9 designates a tie rod
• the number 5 designates a structural pole other than an edge pole.
• Letters of reference additional a, b, c denote different sections of the frame.
• the beam attachment system 1 therefore comprises two posts 5a, 5b, a beam 3b and at least one tie rod 9b.
• the beam is placed under stress and the tie connects at least one of the posts 5a, 5b, so that the two posts 5a, 5b are urged in spacing by the beam 3b and urged in approach by the tie 9b.
• the stress by the tie 9b at least partially compensates for the moment exerted by a beam on the posts and also creates an increase in longitudinal stress in the beam.
• FIG. 2 is a front view in section showing the upper part of a post connected to two beams via connecting rods.
• the figure shows a post 5a, two beams 3a, 3b, a vertical setting 17, two connecting rods 13a, 13b, two distribution plates 19a, 19b and two tie rods 9a, 9b.
• An element a of each pair of elements a, b above is located to the left of the post 5a, the other element being located to the right of the post.
• the post 5a is embedded in the ground 4 in this example and, more particularly, in the foundation. According to a variant, it can be articulated on the foundation.
• the post 5a is connected to the beams 3a, 3b by means of a connecting rod 13a, 13b articulated on the one hand to the post 5a which it connects to a beam and on the other hand to a beam 3a, 3b.
• the articulation at the level of the post 5a can be achieved by means of a pivot link 14a, 14b or, as a variant, of an axis.
• the articulation at the level of the beam can, for its part, be carried out by means of a support angle 18a, 18b.
• a tip angle can then be articulated in the support angle 18a, 18b so as to form a pivot connection.
• the end angle can be made in the form of a distribution plate 19a, 19b.
• This plate fixed 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 3.
• Two tie rods 9a, 9b are fixed at the head of the post 5 a, left and right, respectively. According to a variant, only one tie rod is fixed at the head of the post 5a.
• the same tie can then extend along a frame comprising several posts.
• Such a structure has the advantage of distributing the stress forces, as well as the recovery of these forces, along the frame.
• FIG. 3 is a top view of the elements shown in Figure 2.
• Each of the beams 3a, 3b comprises two lateral parts, respectively referenced in Figure 3 under 3aG, 3aD, 3bG and 3bD.
• the two side parts are assembled and connected by fastening elements 20a, 20b such as bolts. These fastening elements pass through a distribution plate 19a, 19b, as shown in FIG. 2.
• a passage 15a, 15b is formed between two lateral parts, allowing a tie rod 9a, 9b to engage there.
• the section of the half-beams can be designed so that after the assembly of the two half-beams, a passage 15a, 15b forms a channel allowing a tie rod 9a, 9b to engage there.
• a tie 9a, 9b is thus at least partially retracted in a beam, which makes it possible to protect it, for example in the event of a fire.
• two tie rods 9a, 9b are fixed at the head of the post 5a.
• Figure 4 is a partial front view of a tie fixed at the head of a post and at one end of a beam. The figure shows a tie 9b, the head of a post 5a, a beam 3b and a tension member 23b of the tie 9b. This member 23b makes it possible to adjust the tension of the tie rod 9b, for example after the mounting of the beam 3b on the posts and of the tie rod with the beam.
• Figure 5 is a cross-sectional view of a beam, at a central section of the beam.
• This figure shows a beam 3 comprising two lateral parts (or half-beams) left and right 3G, 3D fixedly connected by fastening elements 20.
• the figure also shows a part of post 5 and a connecting rod 13 articulated to the post 5 via a pivot link 14 and in contact with the beam 3 at a distribution plate 19 of the beam.
• the fastening elements 20 pass through this plate 19.
• the left 3G and right 3D lateral parts of the beam 3 form a passage 15 allowing a tie rod (not shown) to engage there. It should be noted that the tie passage 15 is as much less material in the beam.
• the passage 15 frees up material and therefore lightens the beam 3.
• the beam 3 is thus less subject to buckling caused by its own mass.
• the retraction of the tie rod inside the passage 15 reduces the spatial size of the tie rod and makes it possible to protect the tie rod, for example, in the event of fire. If necessary, a flame retardant film can be attached so as to close the passage 15, in order to further protect the tie rod in the event of fire.
• the passage 15 is formed so that the tie rod supports the beam at the center of gravity of the beam. A distribution plate 41 central of the beam rests on the tie rod 9.
• This central plate 41 is crossed by fastening elements 40 fixedly connecting the two lateral parts 3 G, 3D of the beam via the central plate 41.
• the passage 15 of the tie formed by the lateral parts 3G, 3D allows relative sliding of the beam relative to the tie.
• This last property of the attachment system proves to be particularly advantageous when the beam 3 is subjected to an asymmetric load. This is for example the case when equipment such as air conditioning or heating equipment is fixed in abutment on the beam at a location remote from the center of the beam. In such a case, the additional degree of freedom offered by the relative sliding of the beam 3 with respect to the tie rod 9 makes it possible to reduce the potential energy linked to the load constraint.
• the beam 3 is supported by the tie rod 9, the latter can also be connected to the tie rod according to various possible variants.
• the tie can support the beam via a ring or an equivalent connecting member allowing the beam 3 to slide along the tie.
• the tie rod is simply fixed to the beam, for example in the center of the upper surface of the beam. This variant makes it possible to simplify the manufacture of the fastening system 1. This gives a fastening system 1 in which the stressing of posts by a tie rod at least partially compensates for the moment exerted by the beam 3 on the posts and creates in addition, an increase in longitudinal stress in the beam 3.
• tie rod can be made in two separate tie rod parts. One of these parts connects a post to the beam and the other of these parts connects the beam to another post. A tie-rod-beam-guyed structure is then obtained in which each of the two tie-rod parts at least partially compensates for the moment exerted by the beam on each of the poles.
• FIG. 6 is a partial view in section, along a longitudinal section of the beam, at its central part. The figure shows the central part of a beam 3 comprising two lateral parts. The cut is made between these two side parts.
• the tie rod 9 is engaged in the tie rod passage formed by the lateral parts of the beams and allows relative sliding of the beam 3 with respect to the tie rod 9.
• the beam 3 and tie rod 9 are mounted with relative sliding in a finite sliding portion.
• the sliding portion is delimited by two sleeves 43, 45 fixed on the tie rod 9.
• the two lateral parts of beams are connected by a central distribution plate 41, pierced with several holes allowing the fixing of the plate 41 on the two lateral parts .
• the central distribution plate can thus slide along the tie rod 9 and between the sleeves.
• the difference between the finished sliding portion and the length of the distribution plate defines a sliding clearance, as illustrated in FIG. 6.
• the distribution plates 19, 41 are themselves subdivided into two plates.
• each of these two plates can be pre-assembled on a lateral part of a 3G, 3D beam.
• the assembly phase of the beam 3 only requires assembly directly by fixing the lateral parts of the beam, for example by means of bolts.
• the pre-assembly phase being a factory phase, it can be easily mastered. Any errors during the assembly of the beam are thus eliminated.
• the assembly of the beam 3 on a site is thereby substantially simplified.
• the sliding clearance is typically between 0.2 / 10000 5/10000 e and e of the span of the beam. This clearance is chosen so as to be largely below a threshold of instability of the attachment system, that is to say a threshold beyond which the sliding of the beam 3 threatens the stability of the system.
• FIG. 7 shows a front view, showing a beam intended to be mounted in the attachment system.
• the beam 3 is subdivided into three longitudinal segments 31, 32, 33.
• the third segment 33 is similar to the first segment 31 but oriented symmetrically with respect to the central cross section of the beam 3.
• Each of the segments ends in a recess at one, at least, of its ends, as shown in the figure, so that the assembly of the segments is facilitated.
• the central segment 32 has a step such that it rests on the other two segments 31,33.
• Fixing plates 34 consolidate the beam 3 at the level of the recesses.
• the tie rod is made of steel or is derived from steel and has a modulus of elasticity of between 190,000 and 230,000 MPa.
• the invention is however not limited to the variants described above but is susceptible of numerous other variations easily accessible to those skilled in the art. For example, one can consider splitting a beam into any odd number of longitudinal segments. An odd number of segments makes it possible to envisage a beam symmetrical with respect to its transverse, central section, the beam comprising a central segment resting on the tie rod. The number of segments can then be optimized so as to reduce the overall cost of mounting the attachment system.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Joining Of Building Structures In Genera (AREA)
• Rod-Shaped Construction Members (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Flanged Joints, Insulating Joints, And Other Joints (AREA)
• Mutual Connection Of Rods And Tubes (AREA)
• Led Device Packages (AREA)
• Variable-Direction Aerials And Aerial Arrays (AREA)
• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
• Braking Arrangements (AREA)

Priority Applications (5)

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Publications (1)

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ID=33522714

Family Applications (1)

Country Status (9)

Cited By (1)

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Citations (5)

Family Cites Families (8)

• 2003
  • 2003-07-03 FR FR0308093A patent/FR2857038B1/fr not_active Expired - Fee Related
• 2004
  • 2004-07-02 AT AT04767562T patent/ATE394553T1/de not_active IP Right Cessation
  • 2004-07-02 CA CA2530559A patent/CA2530559C/fr not_active Expired - Fee Related
  • 2004-07-02 WO PCT/FR2004/001722 patent/WO2005012665A1/fr active IP Right Grant
  • 2004-07-02 US US10/562,733 patent/US20070028551A1/en not_active Abandoned
  • 2004-07-02 CN CNB2004800227880A patent/CN100557153C/zh not_active Expired - Fee Related
  • 2004-07-02 DE DE602004013594T patent/DE602004013594D1/de active Active
  • 2004-07-02 EP EP04767562A patent/EP1649116B1/fr not_active Not-in-force
• 2006
  • 2006-01-03 NO NO20060015A patent/NO20060015L/no unknown

Patent Citations (5)

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