EP3469143B1 - Support pneumatique - Google Patents

Support pneumatique Download PDF

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Publication number
EP3469143B1
EP3469143B1 EP17730038.1A EP17730038A EP3469143B1 EP 3469143 B1 EP3469143 B1 EP 3469143B1 EP 17730038 A EP17730038 A EP 17730038A EP 3469143 B1 EP3469143 B1 EP 3469143B1
Authority
EP
European Patent Office
Prior art keywords
pneumatic
formations
force introduction
support
tension member
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
EP17730038.1A
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German (de)
English (en)
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EP3469143A1 (fr
Inventor
Mauro Pedretti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pibridge Ltd
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Pibridge Ltd
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Publication date
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Publication of EP3469143A1 publication Critical patent/EP3469143A1/fr
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Classifications

    • 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
    • E01D12/00—Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
    • 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
    • E01D15/14—Floating bridges, e.g. pontoon bridges
    • E01D15/20—Floating bridges, e.g. pontoon bridges collapsible, expandable, inflatable or the like with main load supporting structure consisting only of non-rigid members
    • 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
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/38—Arched girders or portal frames
    • E04C3/46—Arched girders or portal frames of materials not covered by groups E04C3/40 - E04C3/44; of a combination of two or more materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/20—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/20—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure
    • E04H2015/201—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable tubular framework, with or without tent cover

Definitions

  • the present invention relates to a pneumatic carrier according to the preamble of claim 1 and a method for its production according to claim 10.
  • 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, among other things, into a spindle-shaped carrier according to WO 2005/007991 .
  • pneumatic carriers are 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 supports is that although they can carry high surface loads, i.e. they are suitable for many purposes, they are only suitable for asymmetric loads to a limited extent compared to the possible surface load, which in particular prevents use as a bridge, since a bridge over a bridge rolling axle, such as a truck, represents a particularly unfavorable case in this regard.
  • Figures 1a to 1d Fig. 12 show, by way of example and diagrammatically, pneumatic supports according to the prior art, shown with exaggerated thickness for the sake of clarity.
  • Figure 1a shows a pneumatic carrier 1 according to the WO 2005 / 042 880 with a pressure member 2, a tension member 3 and an inflatable pneumatic body 4, shown in dashed lines, arranged between pressure member 2 and tension member 3, which is inflated to operating pressure and thus keeps the pressure member 2 and the tension member 3 at a distance.
  • the pneumatic body 4 preferably consists of a gas-tight, flexible, essentially inextensible material which forms a cover which can be folded up for transport and which, under operating pressure, assumes a shape which is matched to the respective pneumatic carrier.
  • the carrier 1 is supported at its ends 6.7 by supports 8.9, where the pressure member 2 and the tension member 3 are connected to one another via a node 10.11.
  • the tension member 3 is essentially only subjected to axial tension and the pressure member 2 is essentially only subjected to axial pressure, so that the tension member 3 can be designed as a cable and the pressure member 2 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 2 determines the load-bearing capacity of the carrier 1 .
  • the pressure member sinks increasingly into the body 4 at the location of the load 12, and instead bulges elsewhere, with a tendency to bulge beyond the bearing surface on the body 4 and thus stand out from this, which has an increased risk of buckling and thus relevant reduced load capacity of the carrier 1 result.
  • connecting elements are preferably arranged vertically (ie in the load direction and perpendicular to the longitudinal axis of the beam 1 ), designed purely as tension members 14 which connect the pressure member 2 to the tension member 3 .
  • the tension members 14 are suitable for an asymmetrical To prevent load to a certain extent that the pressure member 2 stands out at a non-loaded location from the body 4 and thus buckles.
  • the horizontal spacing of the tension members 14 is to be optimized by a person skilled in the art with regard to the specific case.
  • connection points between the tension members 14 and the pressure member 2 as well as the tension member 3 in turn represent force application points for these elements.
  • Figure 1b shows a pneumatic carrier 15 according to FIG WO 2015/176 192 which also rests on supports 16,17 and has two end nodes embodied as ramp-shaped sleepers 18,19 and three pneumatic segments 20 to 22, each of the pneumatic segments having a pressure member 23 to 25 embodied, for example, as a compression bar, a compression element embodied here, for example, as a tension bar (a traction cable would also be possible) has tension member 26 to 28 and a pneumatic body 29 to 31, each pneumatic body 29 to 31 in turn keeping the respectively associated pressure member 23 to 25 and the respectively associated tension member 26 to 28 operable at a distance due to its operating pressure.
  • Two connecting elements 32, 33 running in a zigzag manner at an angle of preferably 45° without a gap through each segment 20 to 22 (and thus without a gap through the pneumatic carrier 15 formed by the arrangement shown) form a structure that is particularly suitable for asymmetric loads and is rigid, ie under operating load, for example, relative to the carrier of Figure 1a only deflects slightly downwards from the straight (unloaded) target position.
  • connection points of the nodes 18,19 with the respective pressure member 23,25, tension member 26,28 and the connection points of the pressure members 23 to 25 and the tension members 26 to 28 with the connecting elements 32,33 form force application points in the pressure members 23 to 25 and in tension members 26 to 28.
  • Figure 1c shows a carrier 40, also according to the WO 2015/176 192 , which is analogous to the carrier 15 according to Figure 1b is constructed, here has four pneumatic segments 41 to 44 and a modified longitudinal cross section, ie has a slightly convex upper side and a strongly convex lower side.
  • Figure 1d shows a carrier 45, also with several pneumatic segments 46 to 50, with a further modified longitudinal cross-section such that it can be loaded in the manner of a vault.
  • the beams 1,15,40,45 have in common the advantage that they can easily be transported dismantled and assembled on site by assembling the end nodes, compression members, tension members and any connecting elements, then inflating and pressurizing the pneumatic bodies.
  • the disadvantage is that the carriers 1,15,40,45 increasingly warp during the pressure build-up and finally, under operating pressure but unloaded, assume an arcuate position, and only under a load their stretched target shown in FIGS. 1a to 1d -Assume position and eventually under the operational load in the case of a beam of the type in Figure 1a shown carrier 15 strong and in the case of in the manner of in the Figures 1b to 1d shown carrier 15,40,45 bend only reduced.
  • FIGS Figures 1e to 1h is the curvature of the carrier 1,15,40 and 45 shown schematically on the basis of their longitudinal center lines, wherein the longitudinal center lines 55 to 58 shown in dashed lines correspond to the target position, as shown in FIGS Figures 1a to 1d is shown.
  • the solid center lines 59 to 62 are shown extrapolated and only qualitatively according to the actual situation under operating pressure, but unloaded (ie according to the curvature).
  • the dot-dash longitudinal center lines 58 to 61 correspond to the actual position under operating pressure and operating load, ie the load deformation, for the sake of simplicity a load not shown to relieve the figure, acting in the middle of the carrier 1, 15, 40 and 45, is assumed.
  • the in Figure 1b illustrated pneumatic support 15 shows a medium curvature and also only a small, insignificant deflection under load.
  • the only medium curvature is due to the fact that the middle segment 21 ( Figure 1b ) is symmetrical to its longitudinal center line, i.e. essentially not warped (apart from an asymmetry that is caused, for example, by manufacturing tolerances).
  • warping or deflection may or may not play a role - warping is unfavorable, for example, in the case of a bridge, which should be as rigid as possible. So it is particularly disadvantageous if a bridge formed from beams according to Figure 1b although it would be extraordinarily rigid and therefore particularly suitable for its use, but due to the curvature at the ends it has to be negotiated steeply and then up to its target position (line 18 from Figure 1f ) behaves spongy / yielding. The advantage of the flexural rigidity is only reduced to the full.
  • the object of the present invention is to provide a pneumatic support which only reduces or avoids the phenomenon of buckling.
  • the pneumatic body has formations extending between adjacent force application points, which protrude outwards beyond a straight connection between the adjacent force application points, results in a pressure distribution in the pneumatic body (or in the pneumatic bodies of the segments of a pneumatic carrier having several segments ) which counteracts the curvature and thus reduces or prevents it.
  • FIG 2 shows an embodiment of a pneumatic carrier 70 according to the invention, which rests on the carrier 15 of FIG Figure 1b is constructed.
  • the segments 71 to 73 can be seen, with the segments 71 and 73 being modified and the segment 72 having the same structure as the segment 21 of the carrier 15 ( Figure 1b ) is equivalent to.
  • any type of pneumatic carrier can be modified according to the invention if and to the extent that it exhibits the phenomenon of curvature.
  • the pressure rods 74 to 76 are shown, as well as the tension elements designed as tension cables 77, 79 and the tension rod 78 of the segments 71 to 73. Also shown are the compared to the embodiment of FIG Figure 1b unchanged connecting elements 33,34, which stiffen the pneumatic carrier 70 in the case of the operating load. Also unchanged from the embodiment of FIG Figure 1b is the pneumatic body 81, while the pneumatic Bodies 80, 82 are modified according to the invention as described below.
  • the figure 2 12 further shows the force application points 83, 84 and 85 present in the segments 71, 73, the force application points 83 connecting the connecting element 33, the sleeper 18 and the traction cable 77 to one another and thus introducing the corresponding forces into the traction cable 77.
  • the force application points 85 connect the pull rod 78, the connecting element 33 or 34 and the pull cable 77, as a result of which the corresponding forces are introduced into the pull cable 77.
  • the force application points 84 connect the traction cable 77 to the connecting elements 32 , 33 and introduce the corresponding forces into the traction cable 77 .
  • Between adjacent force application points 83,84 or 84,84 and 84,85 80,82 formations 86 to 89 are provided in the pneumatic bodies, which according to the embodiment of figure 2 are provided on the tension member side.
  • these formations 86 to 89 result in an equilibrium of forces in the pneumatic bodies 80, 82 due to the operating pressure, in which there is essentially no deformation of the pneumatic body due to the operating pressure—in contrast to the prior art.
  • the formations 86 to 89 are advantageous, and preferably as in the figure 2 shown, arc-shaped, most preferably arc-shaped, and extend from a force application point 83 to 85 to the adjacent force application point 84.
  • the protrusions 86 to 89 more preferably have a height above the connecting line between the force application points 83 to 85 delimiting them of 10 to 15% of the distance between these force application points 83 to 85 .
  • the Applicant has found that such a height is already effective in reducing the undesired curvature.
  • the tension member 77, 79 is operatively connected to the pneumatic body 80, 82 only at the location of the force application points 83 to 85, so that the tension member can extend straight between the force application points 83 to 85 and does not follow the contour of the pneumatic body 80, 82 or
  • the contour of the formations 86 to 89 must follow, which under operating pressure leads to a shortening of the distance between the force application points 83,85 and then to a more complicated design of the entire segment 71,73 in relation to the pressure rod 74,76, the pressure body 80 .82, the traction cable 77.79 and the contour of the formations 86 to 89, which is very difficult to calculate and would therefore have to be determined by trials.
  • a pneumatic carrier (with one or more pneumatic bodies that are asymmetrical in the longitudinal direction) in which under operating pressure but unloaded, its side having the pressure member is at least partially curved in an arc and its side having the tension member Page is designed such that its force application points lie essentially on a straight line.
  • the configuration of the pneumatic support according to figure 2 can be modified, for example by omitting the central segment, so that the side having the pressure member is continuously curved in an arcuate manner.
  • the applicant has determined the curvature of a 38 m long pneumatic beam for an operating load of 4.5 t with a continuously curved pressure member and straight tension member (such a configuration should be particularly convenient to set up in the field, since the tension member or the underside of the pneumatic support then rests on the floor).
  • the curvature leads to a "hump" of the beam with a height of about 1 meter, the tension member in the middle of the beam lifts off the ground at about the same height.
  • the pneumatic carrier provided with formations according to the invention which otherwise has the same configuration as the carrier of the prior art, was essentially free of the curvature, which was only in the range of approx. 10 cm.
  • a pneumatic support having one (or more) pneumatically pressurizable pneumatic body which, under operating pressure, operatively spaced a compression member extending substantially along its length and a tension member also extending substantially along its length, wherein in end regions of the pressure member and the tension member, forces are introduced into these at force introduction points, and connecting elements are provided between the pressure member and the tension member, which also introduce forces into the pressure member and the tension member at force introduction points, the pneumatic body having formations extending between adjacent force introduction points , the after protrude beyond a straight connection between the adjacent force application points.
  • the pneumatic carrier preferably has a flexible envelope (namely the pneumatic body - or, in the case of several segments, several pneumatic bodies with several flexible envelopes) whose cutting pattern determines the shape of the carrier under operating pressure, such that form the formations in a predetermined contour.
  • a flexible envelope namely the pneumatic body - or, in the case of several segments, several pneumatic bodies with several flexible envelopes
  • At least one connecting element is preferably provided in the pneumatic carrier, which extends in a zigzag shape through the entire length of the pneumatic body, and which particularly preferably, as mentioned above, runs at an angle of 45° to the intended load direction (in the case of a bridge i.e. 45° to the horizontal).
  • the adjacent force application points are at different distances from one another when the distance between the pressure member and tension member changes, as is evident from the embodiment according to FIG figure 2 is the case in the segments 71, 73 or, in general, in the case of pressure bodies which are designed asymmetrically over a length.
  • the protrusions 86 to 89 have different heights, since this height is preferably determined in relation to the distance between the associated force application points.
  • the height of the formations is determined iteratively in a particularly simple manner: In a first step, the height is determined at 10 to 15% of the distance between the assigned (i.e. adjacent) force application points. After that, the pneumatic support can still have an unwanted residual curvature, so that in a second step the height of the protrusions is further increased by 30 - 50% (with an initial 10% increase, the resulting height would then be between 13 and 15% of the distance between the neighboring force application points).
  • This iterative process converges very quickly for most configurations of a pneumatic beam to be determined by a person skilled in the specific case, but can be continued without further ado until the curvature essentially disappears or no further improvement occurs for the intended use of the beam.
  • the structure of a pneumatic carrier according to the invention is preferably designed such that one (or more) formations have a height above the connecting line between the force application points that delimit them of 10 to 15% of the distance between these force application points.
  • the pneumatic beam designed according to the invention is built and the pneumatic body of the beam is brought to operating pressure and it is checked whether there is any distortion of the beam that persists compared to the intended shape, and if so, the height of selected formations is checked 30-50% increased.
  • the person skilled in the art will increase all the formations equally, but in the case of a special shape of the pneumatic body in question, he can only change selected formations, for example through tests).
  • the iterative process can be continued, i.e., iteratively increasing the height of the protuberances until further increase does not further improve the curvature of the unloaded beam.
  • the invention provides a method for manufacturing a pneumatic support, in which the shape of the pneumatic support intended during operation and the location of the force application points and then the curvature to be expected under operating pressure but without operating load are determined in advance, and then formations on the The inside of the curvature of the pneumatic carrier can be provided, which extend from force application point to force application point via a connecting line between associated force application points to the outside.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Air Bags (AREA)
  • Fluid-Damping Devices (AREA)
  • Bridges Or Land Bridges (AREA)
  • Rod-Shaped Construction Members (AREA)

Claims (13)

  1. Support pneumatique (70), pourvu d'au moins un corps (80 à 82) pneumatique, susceptible d'être mis sous pression, qui lorsqu'il se trouve sous la pression de service tient à distance l'un de l'autre de manière opérationnelle un organe de pression (74 à 76), s'étendant majoritairement sur sa longueur et un organe de traction (77 à 79), s'étendant également majoritairement sur sa longueur, dans des zones d'extrémité de l'organe de pression (74 à 76) et de l'organe de traction (77 à 79), dans des points d'introduction (83 à 85) des forces, des forces étant introduites dans ceux-ci et entre l'organe de pression (74 à 76) et l'organe de traction (77 à 79) étant prévus des éléments d'assemblage (32, 33), qui également dans des points d'introduction (83 à 85), introduisent des forces dans l'organe de pression (74 à 76) et dans l'organe de traction (77 à 79), caractérisé en ce que le corps (80, 82) pneumatique comporte des déformations (86 à 89) s'étendant entre des points d'introduction (83 à 85) des forces voisins, qui saillissent vers l'extérieur par-dessus un assemblage droit entre les points d'introduction (83 à 85) des forces voisins.
  2. Corps pneumatique selon la revendication 1, les déformations étant prévues sur le côté de l'organe de traction (77 à 79).
  3. Support pneumatique selon la revendication 1, les déformations (86 à 89) étant conçues de telle sorte que pendant l'établissement de la pression de service dans le corps (80, 82) pneumatique, le support (70) se recourbe moins que ce ne serait le cas pour un support pneumatique de conception identique, mais dépourvu de déformations, et la déviation du support (70) résultant de la courbure étant de préférence inférieure à 30 %, de manière très préférentielle, inférieure à 10 % de la déviation qui se produirait sans déformations.
  4. Support pneumatique selon la revendication 1, au moins un élément d'assemblage (32, 33) étant prévu, qui s'étend en continu en forme de zigzag à travers toute la longueur du corps pneumatique (80 à 82).
  5. Support pneumatique selon la revendication 1, le support pneumatique (70) comportant une enveloppe souple, dont le patron détermine la forme du support (70) se trouvant sous pression de service, de telle sorte que les déformations (86 à 89) se créent avec des contours prédéfinis.
  6. Support pneumatique selon la revendication 1, les déformations (86 à 89) étant conçues de forme curviligne, de préférence en forme d'arcs de cercles et s'étendent d'un point d'introduction (83 à 85) des forces vers le point d'introduction (83 à 85) des forces suivant.
  7. Support pneumatique selon la revendication 1 ou 6, la déformation (86 à 89) présentant au-dessus de la ligne d'assemblage, entre les points d'introduction (83 à 85) des forces qui la délimitent une hauteur de 10 à 15 % de l'écart entre lesdits points d'introduction (83 à 85) des forces.
  8. Support pneumatique selon la revendication 1, sous la pression de service du support (70), mais en l'absence de contrainte, son côté comportant l'organe de pression (74, 76) étant recourbé au moins en partie en forme d'arc et son côté comportant l'organe de traction (77, 79) étant conçu de telle sorte, que ses points d'introduction (83 à 85) des forces se situent majoritairement sur une ligne droite.
  9. Support pneumatique selon la revendication 1, l'organe de traction (77 à 79) n'étant assemblé fonctionnellement avec le corps pneumatique (80 à 82) qu'à l'endroit des points d'introduction (83 à 85) des forces.
  10. Procédé, destiné à fabriquer un support pneumatique selon la revendication 1, caractérisé en ce que l'on détermine la forme prévue pour le support pneumatique (70) en service ou l'endroit des points d'introduction (83 à 85) des forces et ensuite la courbure à attendre sous la pression de service mais sans contrainte de service, et que l'on prévoit ensuite des déformations sur la face intérieure de la courbure du support pneumatique (70), qui de point d'introduction (83 à 85) des forces à point d'introduction (83 à 85) des forces s'étendent vers l'extérieur par-dessus la ligne d'assemblage entre des points d'introduction (83 à 85) des forces associés.
  11. Procédé selon la revendication 10, des déformations (86 à 89) curvilignes étant prévues dont la hauteur s'élève à de 10 à 15 % de l'écart entre les points d'introduction (83 à 85) des forces associés.
  12. Procédé selon la revendication 10, le corps pneumatique (80 à 82) du support (70) étant amené à la pression de service, suite à quoi, l'on vérifie si une courbure du support (70) persistante par rapport à la forme prévue est présente et dans le cas positif, l'on augmente la hauteur de déformations (86 à 89) sélectionnées de 30 à 50 %.
  13. Procédé selon la revendication 12, la hauteur des déformations (86 à 89) étant augmentée de manière itérative jusqu'à ce qu'une augmentation supplémentaire n'apporte plus aucune amélioration supplémentaire de la courbure du support (70) non contraint.
EP17730038.1A 2016-06-08 2017-06-01 Support pneumatique Active EP3469143B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00728/16A CH712565A1 (de) 2016-06-08 2016-06-08 Pneumatischer Träger.
PCT/CH2017/000053 WO2017210803A1 (fr) 2016-06-08 2017-06-01 Support pneumatique

Publications (2)

Publication Number Publication Date
EP3469143A1 EP3469143A1 (fr) 2019-04-17
EP3469143B1 true EP3469143B1 (fr) 2022-08-31

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EP17730038.1A Active EP3469143B1 (fr) 2016-06-08 2017-06-01 Support pneumatique

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Country Link
US (1) US10689813B2 (fr)
EP (1) EP3469143B1 (fr)
JP (1) JP7002135B2 (fr)
CA (1) CA3026826A1 (fr)
CH (1) CH712565A1 (fr)
WO (1) WO2017210803A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH713818A1 (de) * 2017-05-16 2018-11-30 Pibridge Ltd Pneumatischer Träger.
CN111441534B (zh) * 2020-05-09 2021-09-28 辽宁工程技术大学 一种随温度调节的自适应张弦梁及使用方法
AR121550A1 (es) * 2021-03-11 2022-06-15 Guijarro Jimenez Antonio Gustavo Disposición constructiva neumática ultrarresistente para grandes obras

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4227094C2 (de) * 1992-08-17 2001-02-08 Man Technologie Gmbh Pneumatische Bodenstütze für verlegbare Brücken
CA2374645C (fr) * 2000-03-27 2009-05-26 Mauro Pedretti Element constitutif pneumatique
ES2235010T3 (es) * 2001-07-20 2005-07-01 Prospective Concepts Ag Elemento neumatico de construccion o de puente.
WO2004083569A1 (fr) * 2003-03-21 2004-09-30 Prospective Concepts Ag Support de type arc, a base d'un element constitutif pneumatique
PL1656483T3 (pl) * 2003-07-18 2008-06-30 Prospective Concepts Ag Dźwigar pneumatyczny
US8820000B2 (en) * 2003-07-18 2014-09-02 Prospective Concepts Ag Pneumatic support
AU2004286010B2 (en) * 2003-11-04 2011-02-17 Airlight Limited (Ag) Pneumatic two-dimensional structure
JP4633852B2 (ja) * 2006-06-20 2011-02-16 ミエティネン，エンシオ，ヨハネス 橋梁、及び橋梁を製造する方法
ES2371518T3 (es) * 2007-11-19 2012-01-04 Prospective Concepts Ag Soporte neumático plegable.
US20100146868A1 (en) * 2008-09-05 2010-06-17 Stanislaw Lukasiewicz Air Beam with Stiffening Members and Air Beam Structure
TWI410329B (zh) * 2009-03-09 2013-10-01 Ind Tech Res Inst 可撓式裝置的取下設備及其取下方法
CH709686A2 (de) * 2014-05-22 2015-11-30 Pibridge Ltd Pneumatischer Träger.

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Publication number Publication date
JP7002135B2 (ja) 2022-01-20
CA3026826A1 (fr) 2017-12-14
JP2019525032A (ja) 2019-09-05
EP3469143A1 (fr) 2019-04-17
WO2017210803A1 (fr) 2017-12-14
US20190301112A1 (en) 2019-10-03
US10689813B2 (en) 2020-06-23
CH712565A1 (de) 2017-12-15

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