EP3146119B1 - Élément porteur pneumatique - Google Patents

Élément porteur pneumatique Download PDF

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Publication number
EP3146119B1
EP3146119B1 EP15732510.1A EP15732510A EP3146119B1 EP 3146119 B1 EP3146119 B1 EP 3146119B1 EP 15732510 A EP15732510 A EP 15732510A EP 3146119 B1 EP3146119 B1 EP 3146119B1
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EP
European Patent Office
Prior art keywords
tension member
pressure
carrier
tension
pneumatic
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.)
Active
Application number
EP15732510.1A
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German (de)
English (en)
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EP3146119A1 (fr
EP3146119C0 (fr
Inventor
Mauro Pedretti
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Pibridge Ltd
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Pibridge Ltd
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Publication of EP3146119C0 publication Critical patent/EP3146119C0/fr
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/005—Girders or columns that are rollable, collapsible or otherwise adjustable in length or height
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/12—Portable or sectional bridges
    • E01D15/122—Inflatable or unreelable bridges ; Bridges with main load-supporting structure consisting only of non-rigid elements, e.g. cables
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D6/00—Truss-type bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Definitions

  • the present invention relates to a pneumatic carrier according to the preamble of claim 1.
  • Pneumatic carrier of the type mentioned are known and are based on a cylindrical basic shape according to WO 01/73245 . This basic form has been further developed into a spindle-shaped carrier according to WO 2005/007991 .
  • the advantage of such pneumatic carriers is their low weight and the extremely small transport volume, since the inflatable body can be folded up and the tension members can be designed as cables.
  • a disadvantage of such pneumatic beams is that although they can carry high surface loads (load distributed over the length of the beam), they are only suitable for asymmetric loads to a limited extent compared to the possible surface load, in particular with regard to concentrated axle loads, which in particular means use as a bridge decisively hinders, since an axle rolling over a bridge, for example of a truck, represents a particularly unfavorable case in this respect.
  • a major weak point is the pressure member, which as a slender rod is at risk of buckling, but cannot be made more massive, otherwise the advantages of the pneumatic concept would be reduced.
  • figure 1 1 shows diagrammatically a pneumatic support 1, here helical, according to the prior art, with exaggerated thickness for the sake of clarity.
  • an inflatable body 2 made of a flexible material keeps a pressure member 3 from a tension member 4 at an operable distance, with planking 5 again being indicated on the pressure member 3 for the sake of clarity, which enable driving over the bridge formed by the girder 1 should.
  • the following thought model can explain how the carrier works: If a load 6 acts on the planking 5 and thus on the pressure member 3, this is carried by the inflated body 2, which is under operating pressure, but which in turn rests on the tension member 4, which thus actually carries the load 6.
  • End nodes designate those areas in which the compression member 3 and the tension member 4 are operatively connected to each other.
  • the tension member 4 is essentially only subjected to axial tension and the pressure member 3 is essentially only subjected to axial pressure, so that the tension member 4 can be designed as a cable and the pressure member 3 as a thin rod.
  • a thin bar under pressure is at risk of buckling, with the result that the buckling limit of the pressure member 3 determines the load-bearing capacity of the carrier 1 .
  • the pressure member sinks increasingly into the body 2 at the point of the load, and instead bulges elsewhere, with a tendency to bulge beyond the bearing surface on the body 2 and thus from this lift, resulting in an increased risk of buckling and thus relevant reduced load capacity of the carrier 1 result.
  • Figure 2a shows an improved spindle-shaped carrier 10 according to the WO 2005/042880 , which is provided with connecting elements arranged vertically (ie in the load direction and perpendicularly to the longitudinal axis of the beam 10), designed as pure tension members 11.
  • the distance a between the tension members 11 can be optimized by a person skilled in the art with regard to the specific case.
  • the tension members 11 are suitable to a certain extent to prevent the pressure member 3 from lifting off the body 2 at a non-loaded location and thus buckling.
  • the vertical tension members 11 only cause the compression member and tension member to deform approximately equally (similar deflection line), they are not suitable to reduce the magnitude of the maximum deflection.
  • Figure 2b shows a possible arrangement of the tension members 11 in a carrier 10 'according to WO 2005/042880 , Several tension members 11 being arranged in bundles at a distance to be determined by those skilled in the art and in a symmetrical arrangement to one another, each starting from a common attachment point 13 .
  • This arrangement appears suitable for reducing the above-mentioned undesired stress in the pressure member 3, since the attack of the tension members 11 is distributed over a small distance opposite the point of attachment 13. But the reduction is only local.
  • the tension members 11 arranged at a distance a from one another advantageously increases the carrying capacity of the carrier 1 in the case of an asymmetric load, since the pressure member 3 is at reduced risk of buckling.
  • the tension member 4' in Figure 2b is also designed as a beam, so that it could also bear a load 6' acting from below, in which case the pressure member 3 would then be subjected to tensile stress).
  • a disadvantage of the arrangement according to the WO 2005/042880 is, however, that the pneumatic system is still heavily deformed under load.
  • a tension member designed as a cable but also a tension member designed as a long, thin rod
  • the pneumatic body 2 enable movements which, in the event of a load, lead to a large deformation of the beam despite sufficient load-bearing capacity, be it with a distributed load and, reinforced, with an asymmetrically applied load, for example in the case of a bridge with traffic.
  • the tension members 11 dampen the tendency to buckling of the pressure member 3, 4', but in turn lead to local lifting of the tension member 4, which in turn promotes a deformation of the entire carrier 10' and ultimately reduces the desired success regarding buckling of the pressure member 3 again.
  • This deformation or deflection of the beam 10,10' represents a problem particularly when it is designed as a bridge (also with roofs, for example during a storm), not least because of the risk of vibrations, as is the case, for example, with the flexible Millennium Bridge in London was.
  • bridges or girders for absorbing loads are advantageously designed to be as stiff as possible, since neighboring structures do not have to be designed for the corresponding movements, as is the case, for example as is the case with the planking or deck of a bridge or the structures supported by a girder.
  • Millenium Bridge if a carrier is too soft, it can mean that it cannot be used for the intended purpose despite having sufficient resilience.
  • connection element between the pressure member and the tension member extends in a zigzag shape over several connection points, pressure can be diverted from the pressure member into the tension member (although the connection elements are designed as tension members), so that between the pressure member and the tension member Shear stresses can be absorbed, analogously to the shear stresses in the web of a double T-beam.
  • the arrangement according to the invention correspondingly stiffens a pneumatic support fivefold, for example, or tenfold in the case of the relevant asymmetric load, as will be shown further below using a simulation calculation.
  • FIG 3 shows schematically an embodiment of a beam 20 according to the invention.
  • End nodes 21,22 enclose a number of pneumatic pressure bodies 23 between them and form an operative connection between the pressure member 24 and the tension member 25, which are attached on opposite sides to the pressure bodies 23, along their length, issue.
  • the pressure bodies 23 operatively space the compression member 24 and tension member 25 under operating pressure.
  • the connection between the pressure member 24 and the tension member 25 brought about by the end nodes 21, 22 is such that the pressure forces acting in the pressure member 24 can be introduced into the tension member 25 and vice versa and can thus be absorbed by it.
  • a connecting element 26 is operatively fixed via connection points 27,27',27'' at several locations on the compression member 24, the tension member 25 and also at the end nodes 21,22, such that it zig-zags over at least several connection points 27,27 '.27" of the pressure member 24 and the tension member 25 extends in the embodiment shown without gaps from the end node 21 to the end node 22.
  • a further connecting element 28 also runs in a zigzag shape via further connecting points 29 through the carrier 20, preferably from the end node 21 to the end node 22.
  • the use of several connecting elements 26, 28 results in smaller distances between the corresponding connecting points 27 to 27 " and 29 on the respective pressure member 24 or tension member 25, with the advantage that the buckling load of the pressure member 24 increases, since the relevant length is given by the distance between the connection points 27, 29.
  • the connection elements 26 and 28 are preferably offset from one another arranged, as shown in the figure, namely in such a way that the connection points 27 to 27" and 29 assigned to them lie opposite each other.
  • the end nodes 21, 22 are rigid and supported on an external structure such as the ground or on another component. According to the figure, in the embodiment shown, they are designed so large that their height corresponds to the height of the adjoining pneumatic pressure body 23 . It is essential and independent of their respective geometric design that they connect the pressure member 24 to the tension member 25 in such a way that they can initiate the pressure or train exerted by them into the other member (tension member 25 or pressure member 24). Accordingly, the end nodes, as in the figures described below or as in figure 1 be shown smaller or designed so that, for example, the tension member acts directly on the end of the pressure member.
  • the pressure member 24 essentially transmits axial pressure and is designed accordingly as a compression rod, while the tension member 25 transmits axial tension and is therefore designed to be flexible can be, for example as a rope.
  • the tension member 25 can thus preferably be designed to be pressure-resistant, so that the carrier 20 can also absorb loads from below than can be loaded on both sides from above (load P) and also from below, in the opposite direction of the load P.
  • Adjacent pressure bodies 23 abut under operating pressure with their right and left end faces 30, 31, resulting in the effect of a single pneumatic pressure body extending continuously from end node 21 to end node 22 over a length, which as such is also in accordance with the invention.
  • the multiple pressure bodies 23 shown in the figure are easier to assemble and disassemble and, as shown below, allow the carrier 20 to be assembled from multiple carrier modules, which in turn can have advantages for transport and storage.
  • the pressure bodies 23 operatively keep the pressure member 24 and the tension member 25 spaced from each other, at rest and in the event that a load P is applied to the beam.
  • Pressure bodies of the type shown are known per se to those skilled in the art; they can, for example, be made of textile and provided with a gas-tight coating.
  • the connecting element 26 runs in a zigzag shape through the length of the carrier 20, from connecting point 27 to connecting point 27 (or 27', 27") and, in the case of further connecting elements, for example connecting element 28 from connecting point 29 to connecting point 29
  • a plurality of connecting elements are provided which extend in a zigzag shape through the carrier, each of which acts on its own connection points.
  • the connecting element 26, 28 is prestressed by the operating pressure in the pressure bodies 23, is therefore a tension member and can be correspondingly flexible, preferably designed as a cable.
  • the connecting element 26,28 is preferably designed as a continuous tension member (cable or chain, etc.).
  • it consists of individual sections 32, which merely extend from a connection point 27 (or 27', 27") or 29 (on the pressure member 24 or on the tension member 25) to another connection point 27 (or 27 ', 27") or 29 (on the tension member 25 or on the pressure member 24).
  • such sections 32 for example flexible, for example as a rope, or as Train (train) staffs.
  • the connecting element 26,28 can be divided into individual sections 32, each of which extends from a connection point 27,29 on the pressure member 24 to an associated connection point 27,29 on the tension member 25 (or vice versa).
  • connection points 27, 29 are preferably designed in such a way that the connection element 26, 28 (or their individual sections 32) are fixed directly to the pressure member 24 or to the tension member 25.
  • the fixing takes place on the pressure body 23, since, as will be described in more detail below, the pretension in the connecting element 26, 28 generated by the pressure body 23 under operating pressure produces the effect according to the present invention.
  • connection points 27, 29 are preferably designed in such a way that during operation the longitudinal axes of the sections 32 or the corresponding sections of the continuous connection element 26, 28 essentially intersect in the area (preferably on the neutral axis) of the pressure member 24 and the tension member 25 . At least in the case of a tension member 25 designed as a cable, this cannot always be exactly the case due to tolerances and displacements in the mounted carrier 20, but it is desirable, since otherwise the rigidity of the carrier 20 that can be achieved per se cannot be fully realized.
  • the longitudinal axes of two connecting elements 26, 28 acting on the same connection point 27, 29 thus preferably intersect essentially in the interior of the pressure member and/or the tension member and particularly preferably on its neutral axis.
  • the connecting element 26, 28 is prestressed, as mentioned. Under the effect of a load P acting, for example, at the location of the connection point 27', this pretension is reduced at the location of the affected connection point 27', such that only a correspondingly reduced tension is introduced into the opposite connection points 27''. This in turn has the consequence that that at the location of the connection points 27" the tension member 25 has to absorb the forces generated by the internal pressure of the pressure bodies 23' to an increased extent, ie the axial tensile forces acting in it are increased.
  • connection element 26 corresponds, for example, to that of the web in the double-T girder, which is subjected to a considerable shearing load and thus gives the double-T girder its rigidity.
  • the pneumatic carriers according to the prior art cannot absorb this thrust, are therefore flexible and show the corresponding deformations when loaded (see below for Figures 9a to 9c, which compare the deformation of a carrier according to the invention with a carrier according to the prior art show).
  • the carrier according to the WO 2007/071101 which has a flexible, longitudinal web: the web is vertically prestressed, but not horizontally; there are no horizontal components of the prestressing forces generated by the internal pressure in the web. Even if horizontal force components were to occur, the web would be distorted under the corresponding oblique stress (direction of a section 32), with the result that the web could not absorb the shear.
  • the web is completely yielding in an oblique direction, since the square lattice formed by the threads would be distorted into a parallelogram-like lattice.
  • the sections 32 of the connecting element 26, 28 are preferably inclined at an angle of 45° to the longitudinal axis of the carrier 20, since the shear force absorbed by the shear force is then optimally absorbed and the carrier 20 is thus stiffened to the maximum.
  • the preference is for those between two associated connection points 27′, 27′′ engaging sections 32 of the at least one connecting link 26 are inclined at an essentially 45° angle to the longitudinal axis of the carrier 20.
  • the inventive pneumatic carrier consists, as before, of parts that have only minimal volume for transport or storage, hardly weigh, but can also have considerable asymmetrical or punctiform effects, comparatively extremely absorb large loads with a deformation reduced to 10% or even less - see the description of FIGS. 9a to 9c.
  • a pneumatic support having a pressurizable, e.g. inflatable, body which, under operating pressure, operably spaced a compression member extending substantially along its length and a tension member also extending along its length, wherein Connection points are provided on the pressure member and on the tension member for at least one connection element that can be subjected to tensile stress and extends between the pressure member and the tension member, and the connection element between the pressure member and the tension member extends in a zigzag shape via a number of connection points both in the area of the pressure member and in the Area of the tension member extends.
  • the at least one connecting element preferably extends continuously through the carrier, over the entire length of the region that can be placed under pressure. If this is not the case, only a partial area of the pneumatic carrier is stiffened according to the invention, so that, for example, a joint is created in the carrier by a locally limited flexible point, which can make sense if it is to be connected to a moving structure there. However, such a joint is paid for by the fact that the properties of the entire carrier are no longer optimal and the specialist is therefore only reluctant to provide it.
  • connection points 27, 27', 29 on the pressure member 24 and those 29, 27" on the tension member 25 of the pneumatic support 20 are at a distance and offset from one another by half a distance, such that the connection element 26 , 28 along the inflatable body in a regular zigzag line.
  • FIGS. 4a and 4b show, schematically and in longitudinal section, modified embodiments of a carrier 33 ( Figure 4a ) and 38 ( Figure 4b ).
  • the carrier 33 is designed in the shape of a spindle.
  • the diameter of the carrier 33 thus changes over its length, with the result that the distance between the connecting points 27 , 29 of the connecting elements 26 , 28 also changes in order to keep them inclined at 45° to the longitudinal axis of the carrier 33 .
  • Figure 5a shows a preferred embodiment of a connection point 27,29 for a continuous connection element 26,28 ( figure 3 ).
  • a counterpart 40 is connected to a base piece 42 with the aid of bolts 41 indicated by a dash and thus holds the connecting element 26, 28 in a fixed position.
  • Its longitudinal axes 44 which, as mentioned above, intersect at the location of the pressure member 24 (or tension member 25), are indicated in dashed lines.
  • the base piece 42 in turn is gas-tight via a retaining plate 43 in relation to the pressure body 23 ( figure 3 ) fixed.
  • Figure 5b shows a cross section through the connection point 27,28 of Figure 5a .
  • Figure 6a shows a longitudinal section through a further embodiment of a carrier 50 according to the invention, which is designed as a bridge.
  • the carrier 50 is constructed in the shape of a spindle, with a substantially straight pressure member 51 (favorable with regard to the buckling load) and an arcuate tension member 52 .
  • Two connecting elements 57, 58 extend lengthwise through the carrier 50 from one end node 59 to the other end node 60, the sections of which located between the connecting points 55, 56 can also be designed as tension rods.
  • Three pneumatic pressure bodies 61 to 63 abut at the end with a right end face 65,66 and a left end face 67 to 68 while the right end face 64 of the pressure body 63 and the left end face 69 of the pressure body 61 do not abut the end nodes 59,60.
  • the pressure member 51 is composed of segments 70 to 72 that can be detached from one another, as is the tension member 52, which has the segments 73 to 75. All segments 70 to 72 and 73 to 75 run over the length of the respective pressure body 61 to 63 assigned to them, so that detachable carrier modules 76 to 78, which are inherently rigid according to the invention, result (whereby the end carrier modules 76 and 78 are of course also their end knots 59,60 are detachable).
  • the carrier 50 thus has several, i.e. two, three or even more than the three carrier modules 76 to 78 shown as an example in the figure, into which it can be disassembled or from which it can be assembled, which in turn has advantages with regard to storage, Transport and assembly or disassembly brings.
  • the individual modules are connected together by operatively attaching the respective segments 70-72 of the compression member 51 and the respective segments 73-75 of the tension member 52 to each other via the connection points 80-87.
  • This can be done via a simple screw connection or via another type to be determined by a person skilled in the art, such as a joint, for example, which allows the segments to be pivoted relative to one another but transmits compressive and tensile forces.
  • the end-side modules 76,78 are connected to the associated end nodes 59,60, with the end node 59 connecting points 80,84 to the associated segments 70,73 and the end node 60 connecting points 83,87 to the associated segments 72,75 in such a way connects with each other that the compressive forces acting in the pressure member 51 and the tensile forces acting in the tension member 52 can be introduced into the respective other member 52,51.
  • the end nodes 59,60 can also be linked to the associated segments 70,73 and 72,75 only via the connection points 80,84 and 83,87.
  • connection of the segments 70 to 72 (compression member) and 73 to 75 (tension member) in the assembled state results in a continuously stiff beam 50 according to the invention, the flexural rigidity of which is not weakened by the modular design compared to a non-modular beam.
  • the connecting elements 57, 58 are then preferably in such a way Divided sections that they do not extend beyond one of the modules 76-78 also. Then attack at connection points 81,82,85,86, which are assigned to two carrier modules 76,77 or 77,78, respectively, the corresponding two sections of the connecting elements 57,58.
  • the connecting elements can be designed to be continuous, or consist of a number of sections, each of which only extends from one connection point to the other connection point.
  • the illustrated embodiment also shows that the pneumatic carrier according to the invention can be designed as a separate, modular carrier module 76 to 78 (or that such carrier modules can be provided for the carrier according to the invention), which in turn can be connected to another (such) carrier module 76 to 78 can be connected in such a way that these are fixed to one another at the front and the connection points 80 to 87 of the pressure members (in the figure: segments 70 to 72 of the common pressure member 51) and the tension members (in the figure: segments 73 to 75 of the common Tension member 52) also form attachment points for the connecting element.
  • the pressure members and the tension members of the end-side support modules are connected to an end node, see the description of the end nodes 21,22 of FIG figure 3 .
  • the carrier modules (76 to 78) can be connected to one another in an articulated manner in such a way that the carrier (20) can be folded up, with the pressure member at one end of a rigid section being attached to the pressure member of the adjacent one rigid section and at the other end of the rigid section the tension member is articulated on the tension member of the other adjacent rigid section and the respective other pressure members and tension members of adjacent stiffer sections are releasably connectable to one another.
  • a pneumatic carrier cannot be dismantled into the carrier modules, but it can still be folded together in a zigzag shape.
  • Figure 6b shows a cross section through the carrier 50 of FIG Figure 6a in the plane AA of the carrier module 77.
  • the pressure body 62 composed of the flexible side sections 90,91 and the upper 92 and lower section 93, which is under operating pressure, with the upper and lower section 92,93 being rigid but sufficiently elastic here are in order to be able to yield to the load deformations of the carrier 50 which are small according to the invention (but of course still exist).
  • the upper section 92 carries the segment 71 of the Pressure member 51, the lower portion 93, the segment 74 of the tension member 52, which segments 71,74 can be formed, for example, from a thin sheet and thus form a roadway or at least a support for a suitable planking.
  • connections 95 between the side sections 90,91 and the upper and lower sections 92,93 are gas-tight and in figure 7 shown in more detail.
  • connecting elements 57, 58 run side by side inside the pressure body 62, the course of which is indicated by dashed lines and the interfaces 95 (connecting elements 57) and 96 (connecting elements 58) with the plane AA can be seen.
  • connection points 56,57 for example according to FIG Figure 5a .
  • the figure shows in particular that several sets of connecting elements 57, 58 can be guided side by side, which allows an extra-wide carrier 50 to be formed.
  • This is advantageous if, for example, two girders arranged next to one another would have to be provided for a bridge, the space between which would have to be covered by planking: in the case of girder 50 with a plank as in Figure 6b trained cross-section, the storage, transport and assembly costs can be advantageously reduced compared to a conventional design with two carriers.
  • the segments 70 to 72 and 73 to 75 ( Figure 6a) to be gas-tight, so that the upper 92 and lower section 93 can be omitted, with which the pressure bodies 61 to 63 then cover the flexible edge sections 90, 91 and the (rigid) segments 70-72 and 73-75.
  • the lower segments 73 to 75 of the tension member 52 can be designed as cables, which would then run four times next to each other according to the embodiment shown in the figure and would each be operatively connected to an associated set of connecting elements 57,58.
  • FIG 7 shows schematically the connection point 95 between the flexible edge section 91 and the upper section 92, the flexible edge section being held by a clamping point 97.
  • the clamping point 97 preferably has a symbolically indicated bolt 98 on which a counter-plate 99 is fixed to the upper section 92 (which is stiff here).
  • the longitudinal edge 100 of the flexible edge section 91 is thickened by an end section 102 of the flexible section 91 folded over by a cable 101 and can thus no longer slip back through the clamping point 97 and is thus fixed gas-tight by the clamping.
  • Those skilled in the art can form all of the junctions 95 in this manner or in any other suitable manner.
  • Figure 8a Figure 1 shows a prior art girder 105 having a compression body 106 and extending therein and spaced apart by vertical tension members 107. End nodes 108,109 operably connect compression member 110 to tension member 111.
  • Figure 8b shows an embodiment of a carrier 115 according to the invention with a pressure body 122, which extends from the carrier 105 ( Figure 8a ) differs by its continuous zig-zag connecting links 116,117. End nodes 118,119 operably connect a compression member 120 to a tension member 121.
  • the figure 9 shows the corresponding diagrams 120 to 123 with the deformations ⁇ of the beams 105,115 based on the deformation (bending line) of their pressure members 110, 120 or their tension members 120,121, with the comparison being made once with a load P m acting in the middle, see diagrams 120 and 121 and then with an asymmetrically applied load P s , see diagrams 122 and 123.
  • a diagram shows either the deflection line of the pressure members 110,120 (diagrams 120 and 122) or the deflection line of the tension members 111,121 (diagrams 121,123).
  • Diagram 120 shows the deformation of the pressure members 110,120 of the carriers 105,115 under the load P m , with the pressure member 110 of the carrier 105 according to the prior art being displaced 107 mm downwards at the location of the applied load P m , the pressure member 120 of the invention Carrier 115, however, only by 21 mm. It is also evident as the compression member 110 of the prior art carrier 105 bulges laterally but the compression member 115 does not.
  • Diagram 121 shows the deformation of tension members 111,121 for the centrally applied load P m , the deformation of which is very similar to that of pressure members 110,120 according to diagram 120, which is likely to be due to the effect of tension members 107 arranged at a distance a.
  • the diagrams 122 and 123 show the deformation of the pressure members 110,120 and the tension members 111,121 of the beams 105 (prior art) and 115 (according to the invention) due to the load P s acting from the side.
  • the pressure member 110 and the tension member 111 of the beam 105 are severely deformed, with a depression at the location of the load P s and a bulge in the other half of the beam 105.
  • the deflection of the pressure member 111 and tension member 121 of the beam 115 according to the invention is reduced even more than in the case of the centrally applied load P m : the deformation of the beam 115 according to the invention is reduced from 181 mm (beam 105 according to the prior art) to a mere 20 mm, ie reduced to about 10%, again as a result of the arrangement of the connecting elements according to the invention.
  • the carrier 115 solves the task set out at the outset and, in particular for asymmetrical loads, is significantly more resistant to bending than the pneumatic carriers according to the prior art.
  • This stiffening is provided over the distance that the links are continuously zigzagged through the beam. In addition to the desired stiffening per se, this also means that the risk of buckling for the pressure member 120 is significantly reduced, which significantly increases the carrying capacity (or its safety factor for a specific load) of the carrier 115 compared to the carrier 105 of the prior art.
  • the compression member is on the side where the load is applied to the pneumatic pressure body, and the tension member is on the side facing away from the load application.
  • several sets of connecting elements can be arranged side by side ( Figure 6b ).
  • the sets of connecting elements are not parallel but inclined to one another.
  • the wide compression member 51 or tension member 52 can also be split into several parallel compression members or tension members, so that the result is an additional compression member and another tension member (to a first compression member or tension member), each with connection points for a another connecting element is provided, which extends between the further pressure member and the further tension member along these in a zigzag shape.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Air Bags (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
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  • Road Signs Or Road Markings (AREA)
  • Actuator (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Claims (16)

  1. Support pneumatique (20, 33, 38, 50, 115) avec un corps (23, 61, 62, 63) pouvant être mis sous pression pneumatique et qui, sous la pression de service, maintient à distance l'un de l'autre, de manière à pouvoir fonctionner, un élément de compression (24, 51, 120) s'étendant essentiellement sur sa longueur et un élément de traction (25, 52, 121) s'étendant également essentiellement sur sa longueur, et un élément de liaison (26, 28, 57, 58) pouvant être chargé en traction, des points de liaison (27, 27', 27", 29) étant prévus sur l'élément de compression (24, 51, 120) et sur l'élément de traction (25, 52, 121) pour au moins l'élément de liaison s'étendant entre l'élément de compression (24, 51, 120) et l'élément de traction (25, 52, 121) et traversant le support (20, 33, 38, 50, 115), caractérisé en ce que l'élément de liaison (26, 28, 57, 58) s'étend en zigzag entre l'élément de compression (24, 51, 120) et l'élément de traction (25, 52, 121) en passant respectivement par plusieurs points de liaison (27, 27', 27"29) sur l'élément de compression (24, 51, 120) ainsi que sur l'élément de traction (25, 52, 121), 121) ou sur plusieurs points de liaison sur le corps (23, 61, 62, 63) pouvant être mis sous pression pneumatique, l'élément de pression (24, 51, 120) et l'élément de traction (25, 52, 121) étant exempts d'articulations aux points de liaison (27, 27', 27", 29), et l'élément de liaison (26, 28, 57, 58) étant fixé aux points de liaison (27, 27', 27", 29) qui lui sont associés.
  2. Support pneumatique selon la revendication 1, dans lequel le au moins un élément de liaison (26, 28) s'étend en continu à travers le support (20, 33, 38, 50, 115), sur toute la longueur de la zone pouvant être mise sous pression.
  3. Support pneumatique selon la revendication 1 ou 2, celui-ci étant réalisé sous la forme d'un module de support (76, 77, 78) qui peut être relié à un autre module de support (76, 77, 78) de telle sorte que ceux-ci sont fixés frontalement l'un à l'autre et que les points de liaison (80 à 87) des éléments de pression et des éléments de traction constituent en même temps des points de fixation (55, 56) pour l'élément de liaison (57, 58).
  4. Support pneumatique selon la revendication 1, dans lequel l'élément de liaison (26, 28) est divisé en sections individuelles (32, 32', 32") qui s'étendent chacune d'un point de liaison (27, 27') sur l'organe de pression (24) à un point de liaison associé (27") sur l'organe de traction (25).
  5. Support pneumatique selon la revendication 1, dans lequel les points de liaison sur l'élément de compression (25) et ceux sur l'élément de traction (24) sont espacés et décalés l'un par rapport à l'autre d'une demi-distance, de sorte que l'élément de liaison 26, 28 s'étend le long du corps gonflable (23) selon une ligne régulière en zigzag.
  6. Support pneumatique selon la revendication 1, dans lequel les axes longitudinaux de deux éléments de liaison (26, 28) s'engageant au même point de liaison (27, 27') se coupent sensiblement à l'intérieur de l'élément de pression (24).
  7. Support pneumatique selon la revendication 1, dans lequel les axes longitudinaux de deux éléments de liaison (26, 28, 32, 32', 32") venant en prise au même point de liaison (27, 27", 29) se coupent sensiblement à l'intérieur de l'élément de traction (25, 51, 121).
  8. Support pneumatique selon la revendication 1, dans lequel il est prévu plusieurs éléments de liaison (26, 32) s'étendant en zigzag à travers le support, ceux-ci s'engageant en des points de liaison respectifs (27, 27', 27", 29).
  9. Support pneumatique selon la revendication 1, dans lequel les parties (32) d'au moins un élément de liaison (26, 28) qui s'engagent entre deux points de liaison associés (27, 27', 27", 29) sont inclinées sensiblement de 45° par rapport à l'axe longitudinal du support.
  10. Support pneumatique selon la revendication 1, dans lequel l'élément de liaison (26, 28) ou un tronçon (32) de l'élément de liaison est conçu comme un élément de traction flexible, de préférence comme un câble.
  11. Support pneumatique selon la revendication 1, dans lequel l'élément de traction (25, 52, 121) est conçu de manière à pouvoir être soumis à une pression.
  12. Support pneumatique selon la revendication 3, dans lequel celui-ci présente plusieurs modules de support (76 à 78).
  13. Support pneumatique selon la revendication 12, dont les modules de support (76 à 78) sont reliés les uns aux autres de manière articulée, de telle sorte que le support (20) peut être replié, sachant que sur le module de support (76 à 78), il est possible de fixer un élément de support (20). L'élément de compression d'une extrémité d'une section rigide est articulé à l'élément de compression de la section rigide adjacente et l'élément de traction de l'autre extrémité de la section rigide est articulé à l'élément de traction de l'autre section rigide adjacente, et les autres éléments de compression et éléments de traction respectifs des sections rigides adjacentes peuvent être reliés de manière amovible.
  14. Support pneumatique (38) selon la revendication 1, dont l'axe longitudinal est courbé, de sorte qu'il est en forme d'arc.
  15. Support pneumatique selon la revendication 1, dans lequel il comprend en outre un élément de compression ou un élément de traction avec des points de connexion pour un élément de connexion, et un autre élément de connexion s'étend en zigzag entre cet élément de compression ou élément de traction supplémentaire et l'unique élément de traction ou élément de compression.
  16. Support pneumatique selon la revendication 1, dans lequel il comporte en outre un autre élément de compression et un autre élément de traction comportant chacun des points de liaison pour un autre élément de liaison, qui s'étend en zigzag entre l'autre élément de compression et l'autre élément de traction le long de ceux-ci.
EP15732510.1A 2014-05-22 2015-05-21 Élément porteur pneumatique Active EP3146119B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00786/14A CH709686A2 (de) 2014-05-22 2014-05-22 Pneumatischer Träger.
PCT/CH2015/000079 WO2015176192A1 (fr) 2014-05-22 2015-05-21 Élément porteur pneumatique

Publications (3)

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EP3146119A1 EP3146119A1 (fr) 2017-03-29
EP3146119B1 true EP3146119B1 (fr) 2023-08-23
EP3146119C0 EP3146119C0 (fr) 2023-08-23

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EP (1) EP3146119B1 (fr)
JP (1) JP6703981B2 (fr)
CN (1) CN106795716A (fr)
CA (1) CA2953404A1 (fr)
CH (1) CH709686A2 (fr)
CL (1) CL2016002965A1 (fr)
EA (1) EA037150B1 (fr)
MA (1) MA40038A (fr)
WO (1) WO2015176192A1 (fr)

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CH713818A1 (de) 2017-05-16 2018-11-30 Pibridge Ltd Pneumatischer Träger.
WO2021086223A1 (fr) * 2019-11-01 2021-05-06 Петр Анатольевич ЛУКАШЕВ Dispositif pour placer une personne (fauteuil) enveloppant un utilisateur
MX2022007886A (es) * 2019-12-23 2022-09-23 Nam Young Kim Estructura de aislamiento sismico utilizando cimiento de cable.

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EP3146119A1 (fr) 2017-03-29
MA40038A (fr) 2015-11-26
EA037150B1 (ru) 2021-02-11
US20170130409A1 (en) 2017-05-11
JP6703981B2 (ja) 2020-06-03
CL2016002965A1 (es) 2017-06-23
US10174466B2 (en) 2019-01-08
CH709686A2 (de) 2015-11-30
CA2953404A1 (fr) 2015-11-26
EA201650113A1 (ru) 2017-08-31
EP3146119C0 (fr) 2023-08-23
WO2015176192A1 (fr) 2015-11-26
JP2017518450A (ja) 2017-07-06
CN106795716A (zh) 2017-05-31

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