EP3625391B1 - Support pneumatique - Google Patents

Support pneumatique Download PDF

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Publication number
EP3625391B1
EP3625391B1 EP18720081.1A EP18720081A EP3625391B1 EP 3625391 B1 EP3625391 B1 EP 3625391B1 EP 18720081 A EP18720081 A EP 18720081A EP 3625391 B1 EP3625391 B1 EP 3625391B1
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EP
European Patent Office
Prior art keywords
pneumatic
pressure
carrier
carrier according
transverse fiber
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.)
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Application number
EP18720081.1A
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German (de)
English (en)
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EP3625391A1 (fr
EP3625391C0 (fr
Inventor
Mauro Pedretti
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Pibridge Ltd
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Pibridge Ltd
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Publication of EP3625391A1 publication Critical patent/EP3625391A1/fr
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Publication of EP3625391B1 publication Critical patent/EP3625391B1/fr
Publication of EP3625391C0 publication Critical patent/EP3625391C0/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
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • 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
    • 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
    • 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
    • E04C3/38—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
    • 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
    • E04H2015/202—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable panels, without inflatable tubular framework
    • E04H2015/204—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable panels, without inflatable tubular framework made from contiguous inflatable tubes

Definitions

  • the present invention relates to a pneumatic carrier according to the preamble of claim 1 as well as in the WO 2015/176192 A1 disclosed.
  • Pneumatic carriers of the type mentioned are known and are based on a cylindrical basic shape according to WO 01/73245 .
  • This basic shape has, among other things, been further developed 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 and the tension members can be designed as ropes.
  • a disadvantage of such pneumatic carriers is that although they can carry high surface loads, i.e. they are suitable for many purposes, they are only suitable for asymmetrical loads to a limited extent compared to the possible surface load, which in particular hinders their use as a bridge, since one over a bridge Rolling axle, for example of a truck, represents a particularly unfavorable case in this regard.
  • FIGS. 1a to 1d show exemplary and schematic pneumatic carriers according to the prior art, which are shown with an exaggerated thickness for the sake of clarity.
  • Figure 1a shows a pneumatic carrier 1 according to 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 the 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 non-stretchable material, which forms a casing that can be folded up for transport and which, under operating pressure, assumes a shape tailored to the respective pneumatic carrier.
  • the carrier 1 is supported at its ends 6.7 via supports 8.9, where the pressure member 2 and the tension member 3 are also connected to one another via a node 10.11.
  • a schematically indicated planking 12 allows the carrier 1 to be used as a bridge.
  • the tension member 3 is essentially only subjected to axial tension and the compression member 2 is essentially only subjected to axial pressure, so that the tension member 3 can be designed as a rope and the compression member 2 as a thin rod.
  • a thin rod under pressure is at risk of buckling, with the result that the buckling limit of the compression member 2 determines the load capacity of the support 1.
  • the pressure member In the case of an asymmetrical load, however, the pressure member increasingly sinks into the body 4 at the location of the load 13, and instead bulges up elsewhere, with a tendency to bulge beyond the contact surface on the body 4 and thus to stand out from this, which results in an increased risk of buckling and thus a significantly reduced load capacity of the carrier 1.
  • connecting elements are preferably arranged vertically (i.e. in the load direction and perpendicular to the longitudinal axis of the carrier 1), designed as pure tension members 14, which connect the pressure member 2 with the tension member 3.
  • the tension members 14 are suitable, in the event of an asymmetrical load, to prevent the pressure member 2 from lifting off the body 4 in a non-loaded location to a certain extent and thus buckling.
  • the horizontal distance between the tension members 14 must 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 introduction points or connecting elements for these elements.
  • Figure 1b shows a pneumatic carrier 15 according to WO 2015/176 192 which also rests on supports 16, 17 and has two end nodes designed as ramp-shaped thresholds 18, 19 and three pneumatic segments 20 to 22, each of the pneumatic segments having a pressure member 23 to 25 designed, for example, as a compression rod, one designed here, for example, as a tension rod (a Pull rope would also be possible) tension member 26 to 28 and a pneumatic body 29 to 31, each pneumatic body 29 to 31 again keeping the respectively assigned pressure member 23 to 25 and the respective assigned tension member 26 to 28 operationally at a distance through its operating pressure.
  • a pressure member 23 to 25 designed, for example, as a compression rod, one designed here, for example, as a tension rod (a Pull rope would also be possible
  • tension member 26 to 28 and a pneumatic body 29 to 31 each pneumatic body 29 to 31 again keeping the respectively assigned pressure member 23 to 25 and the respective assigned tension member 26 to 28 operationally at a distance through its operating pressure.
  • 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 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 has a modified longitudinal cross section, ie an only slightly convex top and a strongly convex bottom.
  • Figure 1 d shows a carrier 45, also with several pneumatic segments 46 to 50, with a further modified longitudinal cross section such that it can be resilient in the manner of a vault.
  • the carriers 1,15,40,45 have the advantage in common that they can be easily transported disassembled and assembled on site by assembling the end nodes, compression members, tension members and any connecting elements, then inflating the pneumatic bodies and putting them under operating pressure.
  • the disadvantage is that the supports 1, 15, 40, 45 become increasingly curved during the build-up of pressure and finally, under operating pressure but without load, assume an arcuately curved position, and only under a load do they reach their desired stretched position shown in Figures 1a to 1d -position and ultimately under the operating load in the case of a carrier in the type of in Figure 1a shown carrier 15 strong and in the case of one in the type in the Figures 1b to 1d Carriers 15,40,45 shown only bend to a reduced extent.
  • the curvature of the supports 1, 15, 40 and 45 is shown schematically based on their longitudinal center lines, the longitudinal center lines 55 to 58 shown in dashed lines corresponding to the target position, as shown in FIG Figures 1a to 1d is shown.
  • the solid center lines 59 to 62 are shown corresponding to the actual position under operating pressure but without load (ie corresponding to the curvature).
  • the dash-dotted longitudinal center lines 58 to 61 correspond to the actual position under operating pressure and operating load, ie the load deformation, whereby for the sake of simplicity a load, not shown to relieve the figure, is assumed to act in the middle of the carrier 1, 15, 40 and 45.
  • the in Figure 1b pneumatic carrier 15 shown 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 does not bend (except for an asymmetry that arises, for example, from manufacturing tolerances).
  • curvature or deflection may or may not play a role - the curvature 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 supports according to Figure 1b Although it would be extremely rigid and therefore particularly suitable for its use, it has to be driven steeply due to the curvature at the ends and then up to its target position (line 18 from Figure 1f ) behaves spongy/flexible. The advantage of bending stiffness is only realized to a limited extent.
  • a further object of the present invention is to create a pneumatic carrier which, regardless of the phenomenon of curvature, retains resilience even when the pneumatic body is injured with an associated loss of pressure.
  • the pneumatic body has pneumatic cross-fiber pressure plates designed as a drop stitch body, it can It can easily be assembled from numerous segments in such a way that if one or more segments lose their functionality, the carrier still remains stable and therefore usable.
  • Figure 2 shows a first embodiment according to the invention of a pneumatic carrier 70, which rested on the carrier 15 having three segments 20 to 22 Figure 1b is constructed.
  • the segments 71 to 73 are visible, with the segments 71 and 73 being modified and the structure of the segment 72 being similar to the segment 21 of the carrier 15 ( Figure 1b ) corresponds.
  • the compression 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 ones compared to the embodiment of Figure 1b unchanged connecting elements 33,34, which stiffen the pneumatic carrier 70 in the event of the operating load. Also unchanged compared to the embodiment of 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 further shows the force introduction points 83, 84 and 85 present in the segments 71, 73, the force introduction points 83 connecting the connecting element 33, the threshold 18 and the pull rope 77 with each other and thus introducing the corresponding forces into the pull rope 77.
  • the force introduction points 85 connect the tension rod 78, the connecting element 33 or 34 and the traction cable 77, whereby the corresponding forces are introduced into the traction cable 77.
  • the force introduction points 84 connect the pull rope 77 with the connecting elements 32, 33 and introduce the corresponding forces into the pull rope 77.
  • Between adjacent force application points 83.84 or 84.84 and 84.85 are in the pneumatic Bodies 80,82 formations 86 to 89 provided according to the embodiment of Figure 2 are provided on the side of the tension member.
  • formations 86 to 89 result in a balance of forces in the pneumatic bodies 80, 82 due to the operating pressure, in which deformation of the pneumatic body due to the operating pressure - in contrast to the prior art - is essentially eliminated.
  • the formations 86 to 89 are advantageous and preferred as in the Figure 2 shown, arcuate, most preferably circular arc-shaped, and extend from a force introduction point 83 to 85 to the adjacent force introduction point 84.
  • the formations 86 to 89 further preferably have a height above the connecting line between the force introduction points 83 to 85 delimiting them of 10 to 15% of the distance between these force introduction points 83 to 85. The applicant has found that such a height already effectively reduces the undesirable curvature.
  • the tension member 77,79 is further preferably operatively connected to the pneumatic body 80,82 only at the location of the force introduction points 83 to 85, so that the tension member can extend straight between the force introduction points 83 to 85 and not follow the contour of the pneumatic body 80,82 or .
  • the contour of the formations 86 to 89 must follow, which leads to a shortening of the distance between the force introduction points 83.85 under operating pressure, 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 pull rope 77,79 and the contour of the formations 86 to 89, which is very difficult to calculate and would therefore have to be determined through tests.
  • a pneumatic carrier (with one or more pneumatic bodies asymmetrical in the longitudinal direction) in which, under operating pressure but free of load, the side containing the pressure member is at least partially curved in an arcuate shape and the side containing the tension member Page is designed such that its force application points lie essentially on a straight line.
  • the configuration of the pneumatic carrier according to Figure 2 can be modified, for example by omitting the middle segment, so that the side having the pressure member is continuously curved in an arc shape.
  • the applicant determined the curvature of a 38 m long pneumatic carrier for an operating load of 4.5 t with a continuous arc-shaped compression member and a straight tension member (such a configuration should be particularly easy to set up in the field, since the tension member or the underside of the pneumatic carrier then rests on the floor).
  • the curvature results in a "hump" in the beam with a height of approx. 1 meter, with the tension member in the middle of the beam rising at approximately the same height from the ground.
  • the pneumatic carrier provided with moldings and otherwise having the same configuration as the carrier of the prior art was essentially free of the curvature, which was only in the range of approximately 10 cm.
  • a pneumatic carrier with one (or more) pneumatically pressurizable pneumatic bodies, which, under operating pressure, operationally keeps a pressure member which extends essentially over its length and a tension member which also extends essentially over its length at a distance from one another, whereby in end regions of the pressure member and the tension member, forces are introduced into them 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 , which protrude outwards beyond a straight connection between the adjacent force application points.
  • the pneumatic carrier preferably has a flexible sleeve (namely the pneumatic body or, in the case of several segments, several pneumatic bodies with several flexible sleeves), the cutting pattern of which determines the shape of the carrier under operating pressure, such that form the shapes in a predetermined contour.
  • At least one connecting element is preferably provided in the pneumatic carrier, which has a zigzag shape throughout the entire length of the pneumatic body extends through it, and which particularly preferably, as mentioned above, runs at an angle of 45° to the intended load direction (in the case of a bridge, 45° to the horizontal). Therefore, 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 the case in the embodiment according to Figure 2 is the case in the segments 71, 73 or generally with pressure bodies that are asymmetrically designed over a length. As a result, the formations 86 to 89 have different heights, since this height is preferably determined in relation to the distance between the assigned force introduction points.
  • the height of the formations is determined particularly easily iteratively: In a first step, the height is determined to be 10 to 15% of the distance between the assigned (i.e. neighboring) force application points.
  • the pneumatic carrier can then still have an undesirable residual curvature, so that in a second step the height of the formations 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 ones force application points).
  • This iterative process converges very quickly for most configurations of a pneumatic carrier to be determined by a person skilled in the art for the specific case, but can easily be continued until the curvature essentially disappears or no further improvement occurs for the intended use of the carrier.
  • arcuate, preferably circular arc-shaped, formations are preferably provided in a pneumatic carrier, the height of which is 10 to 15% of the distance between the assigned force introduction points.
  • the structure of a pneumatic carrier is therefore preferably designed in such a way that one (or more) formations has a height above the connecting line between the force introduction points delimiting them of 10 to 15% of the distance between these force introduction points.
  • the designed pneumatic carrier is built and the pneumatic body of the carrier is brought to operating pressure and checked whether a shape that is different from the intended one persists Curvature of the beam is present, and in the positive case the height of selected formations is increased by 30 - 50%.
  • the expert will increase all shapes evenly, but if the pneumatic body in question has a particular shape, he can only change selected shapes, for example through tests).
  • the iterative process can be continued, i.e. the height of the formations can be increased iteratively until a further increase does not result in any further improvement in the curvature of the unloaded carrier.
  • the result is a method for producing a pneumatic carrier, in which the shape of the pneumatic carrier intended for 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 inside of the curvature of the pneumatic carrier, which extend outwards from force application point to force application point via a connecting line between assigned force application points.
  • Figure 3a shows the right half of a carrier 90, with a right end node 91 and the line of symmetry 92, which delimits the right half (the left half is, in accordance with the line of symmetry, symmetrical to the right half).
  • the basic structure of the carrier 90 is analogous to the carrier 70 ( Figure 2 ), but can also be given to a carrier according to the Figures 1a to 1d or similar pneumatic carriers.
  • the carrier 90 has two connecting elements 93, 94 provided, one each running along one of the outer sides of the carrier 90. This obscures the view in the direction of the Figure 3a Visible connecting element 93 is the connecting element 94 lying behind it, on the other side of the carrier 90.
  • the connecting elements run in a zigzag shape along the carrier 90 and are at connection or force introduction points 95 in the pressure member 96 and connection or force introduction points 97 on the tension member 98 effectively connected. Formations 99 are located on the side of the tension member 98.
  • the pneumatically pressurized body arranged between the pressure member 96 and the tension member 98 and keeping them at a distance has pneumatic fiber pressure plates 100.
  • Such fiber pressure plates are pneumatic, i.e. inflatable, flat bodies, with an external shape similar to an air mattress, with fibers being arranged inside between the bottom part of the casing and the cover part of the casing, which connect the base part and the cover part, so that the plate-shaped contour of the fiber pressure plates 100 maintained even under operating pressure.
  • Such pneumatic fiber pressure plates are known to those skilled in the art as “drop stitch” bodies and can consist of polyester/PVC membranes or other flexible materials such as Hypalon.
  • the entire pneumatically pressurizable body of the carrier 90 is formed from stacked pneumatic fiber pressure plates 100, which are arranged in layers, the layers preferably each consisting of several fiber pressure plates 100 arranged one behind the other and abutting one another, which are offset from an adjacent layer are arranged.
  • some fiber printing plates 100 have been omitted to illustrate the layering (which of course must be present in an operational version of the carrier 100).
  • the fiber pressure plates 100 are aligned horizontally in the embodiment shown.
  • fiber printing plates 100 are advantageous because the individual printing plates are airtight and a reserve fan is not necessary. If such a fiber pressure plate fails, for example due to injury from the outside, the load-bearing capacity of the carrier 90 is only minimally reduced. A failed fiber printing plate 100 can be easily replaced.
  • the fiber printing plates 100 can be of any size, ie tailored to a carrier 90 that is individually designed for the specific case. At the same time, however, the fiber printing plates can be of a standardized size in accordance with the Lego system and can be used for a wide variety of supports. The certain inherent rigidity of fiber pressure plates 100 increases the inherent rigidity of the carrier 100.
  • the pneumatic body which is extremely unwieldy in the case of large pneumatic carriers, consists of a number of individually easy-to-handle fiber pressure plates 100 weighing a few kilograms the fiber pressure plates 100 have a width, in the case of the bridge, road slabs can simply be placed on the top of the pneumatic carrier 90.
  • Lower molded fiber printing plates can also be used here 101, the contour of which corresponds to the formations 99, can simply be placed on its flexible support members (see the description of Figures 3b and 3c ).
  • the layering with fiber pressure plates 100 creates vertical outer walls of the pneumatic carrier 90, so that several carriers 90 can be positioned next to one another in a simple manner, for example in the case of a bridge.
  • the entire carrier 90 (which can reach or exceed a length of, for example, 10m, 20m, 30m or even 40m) thanks to the light and comparatively small individual components without any machines (crane, forklift, etc.) can be set up.
  • the pneumatically pressurizable body is not completely formed by such pneumatic fiber pressure plates, but only partially.
  • the fiber pressure plates are then arranged, for example, in areas of the pneumatic carrier that are at risk of injury, for example where a load is applied or the surface of the carrier is otherwise exposed.
  • cross-fiber printing plates 165 are designed in such a way that the formations are formed via their transverse fibers, whereby the cutting pattern of the cover of the respective cross-fiber printing plates 165 can also be designed accordingly.
  • Figure 3b shows the carrier 90 in cross section at the location of a force application point 97. Shown are pneumatic fiber plates 100 stacked one on top of the other, with a fiber plate 101 at the bottom here, which corresponds to the shapes for reduced curvature of the carrier 90 is formed. Further visible is the pressure member 96, which is designed as a roadway plate (now visible in cross section), as well as a series of tension members 97, which run along the underside of the fiber pressure plates 101, so that the fiber pressure plates 101 with their formations on the ones arranged parallel to one another (for example from existing wire ropes) tension members 97 rest.
  • Cross rods 105 form the force introduction points 97 at the ends, which the connecting elements 97 engage, and at the same time also form flexible support members 106 for the lowest fiber pressure plates 105, which rest on the flexible support members 106.
  • Figure 3c shows two beams 90 arranged next to one another in cross section, whereby, for example, each beam 90 can serve as a roadway for one side of a vehicle.
  • Figure 4 shows schematically a section of the carrier of Figure 3a at the location of a force introduction point 97 located between two formations 99.
  • the course of the flexible support members 106, following the contour of the pneumatic fiber pressure plates 101, and the course of the connecting elements 93, 94 can be seen.
  • a carrier according to the invention having pneumatic fiber printing plates for example a carrier according to Figure 3
  • a carrier according to Figure 3 can now be designed in such a way that through the connecting elements 93, 94 (or the connecting elements according to Figures 1a to 2 ) at the operating pressure of the pneumatically pressurizable body, the complete expansion of the fiber pressure plates is not possible - these then remain below the maximum thickness made possible by the fibers.
  • the pneumatic carrier retains its full functionality, although its pneumatically pressurizable body has become injured and partially inoperable.
  • the at least one connecting element and the layers of pneumatic cross-fiber pressure plates extending over the height of the pneumatic body are designed in such a way that under the operating pressure of the cross-fiber pressure plates, but in the event of a pressure loss in one of the cross-fiber pressure plates with the associated expansion of other cross-fiber pressure plates, the expansion increases the height of the pneumatic body remains essentially constant.
  • pneumatic transverse fiber pressure plates with formations rest on flexible support members, which are preferably designed as bands, and these bands engage cross members provided at the location of the force introduction points, which in turn are operationally connected to the at least one connecting element.
  • Figure 5 shows a cross section through a pneumatic carrier 110 according to the invention according to a further embodiment.
  • the carrier 110 here has a width b, a height H and a length l, see the coordinate system 111, so it runs horizontally and is again shown using the example of a bridge.
  • the pneumatic body 112 of the carrier 110 has transverse fiber pressure plates 113 to 116 arranged next to one another and extending over its height h, which are arranged lengthwise on the carrier. The cross-fiber pressure plates are thus arranged vertically.
  • One (here: lower) long side of the cross-fiber printing plates 113 to 116 is preferably rounded.
  • This curve 118 to 121 can be formed by the cutting pattern of the casing of the transverse fiber panels 113 to 116 in conjunction with correspondingly long transverse fibers, or simply by the correspondingly cut long side of the casing being curved outwards by the internal pressure.
  • a membrane 123 to 126 accommodates the curves 118 to 121 via a trough shaped in the opposite direction to the curves 118 to 121 and thus supports the transverse fiber plates 113 to 116, which can thus be loaded by a load 127 acting from above.
  • the membranes 123 to 126 are in turn attached to tension members 128, 128 'to 131, 131' of the carrier 110 and are stretched by these to form a trough, so that as a result the tension members 128, 128 'to 131, 131' carry the transverse fiber plates 113 to 116 .
  • the tension members are either anchored to nodes of the carrier 110 that are not visible in the figure (see, for example, the nodes or ramps 18, 19 of Figure 2 or the node 91 of Figure 3a ) or, in the case of one Segments such as a segment 71 to 73 are connected to connection points 83, 85 (see Figure 3).
  • the person skilled in the art can also, or only, provide the upper longitudinal side of the transverse fiberboard 113 to 116 with the curves 118 to 121 and then connect it to the pressure members 138, 138 'to 141, 141' in an operational manner via a membrane 123 to 126.
  • At least one (in the illustrated embodiment, all of them) transverse fiber panels have a rounded longitudinal side during operation, which are preferably mounted in a preferably flexible membrane forming a counter-equal trough, the troughs in turn being spanned by tension or compression members are.
  • the other (here: upper) long sides 133 to 136 of the transverse fiber pressure plates 113 to 116 are preferably flattened, with a support plate 132 receiving the load 127 (which in the case of a bridge can be designed as a roadway slab) resting on the flattened long sides 133 to 136.
  • Pressure members 138,138' to 141,141' running laterally on the upper longitudinal sides 133 to 136 are connected to the carrier plate 132, preferably screwed.
  • the flattened longitudinal side 133 to 136 is preferably created by the correspondingly cut cover of the transverse fiber pressure plates 113 to 116 and is particularly suitable for taking on a load transmitted by the carrier plate 132 and via the membrane 123 to 126 on the tension members 128, 128 'to 131, 131' transferred to.
  • the person skilled in the art can also, or only, flatten the lower long side of the transverse fiber board 113 to 116 and then connect it to the tension members 128, 128 'to 131, 131' in an operational manner, for example via a support plate 132.
  • Connecting elements 144,144' to 147,147' are preferably arranged on the sides of the transverse fiberboard 113 to 116, the corresponding connection points being omitted to reduce the load on the figure. These connecting elements correspond to the connecting elements 32,33 of Figure 2 or 93.94 from Figure 3 .
  • At least one transverse fiberboard (here: all) has a flattened longitudinal side during operation, on which a plate-shaped support element for pressure or tension members rests, with a pressure or tension member connected to the support plate running at least on one side of the at least one transverse fiber plate.
  • a preferably plate-shaped pressure or tension member can rest directly on the flattened longitudinal side 133 to 136.
  • some of the transverse fiber plates can be arranged only over a part of the height of the carrier 110 or, for example, the transverse fiber pressure plates 114 and 115 can be replaced by a single pneumatic body that has an inflatable cover.
  • transverse fiber pressure plates extend between the pressure member and the tension member, over at least a height section of the carrier, preferably over its entire height.
  • the transverse fiber pressure plates are further preferably arranged over the entire length of the carrier.
  • transverse fiber printing plates extending over the height of the carrier are preferably arranged over the entire width of the carrier, as is the case Figure 5 shows.
  • the cross-fiber pressure plates 113 to 116 can be rectangular, trapezoidal or have another configuration that is suitable in the specific case. They can be the entire length of the beam, or the length of a segment (for example, segments 71 to 73 of Figure 2 ) or be shorter.
  • Figure 6 shows a segment 150 of a pneumatic carrier of the type shown in Figure 5 shown in side view A according to Figure 5 .
  • the segment 150 here corresponds to the segment 72 of the carrier 70 Figure 2 .
  • the vertically arranged cross-fiber printing plate 113 can be seen, which covers the other cross-fiber printing plates 114 to 116.
  • the connecting elements 144 are also visible, while the other connecting elements 144 'to 147' are hidden by the cross-fiber pressure plate 113. Also visible are the pressure member 138 and the tension member 128 (again, the pressure members 138' to 141' and the tension members 128' to 131' are covered).
  • the membrane 123 is visible, the membranes 124 to 126 are hidden.
  • the connection points 160 correspond to the connection points 84 of Figure 2 or the connection points 95 of Figure 3a .
  • the connection points 161 correspond the connection points 85 of Figure 2 , as segment 150 is merged with other segments.
  • Figure 6 shows an example of a segment 150 of a pneumatic carrier according to one of Figures 1 to 5.
  • a non-segmented carrier according to Figures 5 and 6 be formed.
  • a segment or carrier can also be according to Figure 2 can be provided with shapes, see shapes 86 to 89 of Figure 2 .
  • both the cross-fiber pressure plates 113 to 116 with arcuate curves 118 to 121 can be designed accordingly, for example by means of a corresponding cutting pattern of the shell of the cross-fiber pressure plates 113 to 116, and also the membranes 123 to 126 (also, for example, by means of a corresponding cutting pattern). This then results in at least one transverse fiber pressure plate which extends at least partially over the height of the carrier and which forms a bulge between two connection points.
  • the carrier plate can be made from glued laminated wood, but also as a steel grating or as a sandwich composite material.
  • Steel profiles rectangular or open C or H profiles
  • extruded aluminum profiles can be used for the tension and compression members.
  • Fiberglass profiles or those made of composite materials are also possible.
  • Steel cables, Kevlar tapes or other plastic tension members can be used as connecting elements.
  • the connecting elements can also be designed as Dyneema tapes, i.e. consisting of Ultra-High Molecular Weight Polyethylene (UHMWPE) produced by DSM in Holland or made of the plastic from Honeywell known as Spectra.
  • the membranes that accommodate the curves of the cross-fiber pressure plates can be polyester, PVC or other flexible membranes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Bridges Or Land Bridges (AREA)
  • Moulding By Coating Moulds (AREA)
  • Fluid-Damping Devices (AREA)

Claims (19)

  1. Support pneumatique avec un corps (112) pouvant être mis sous pression pneumatique, qui maintient à distance l'un de l'autre, de manière à pouvoir être entraîné sous la pression d'entraînement, un élément de pression (96, 128 à 131') s'étendant essentiellement sur sa longueur et un élément de traction (98, 138 à 141') s'étendant également essentiellement sur sa longueur (l), l'élément de compression (96, 128 à 131') et l'élément de traction (98, 138 à 141') étant reliés l'un à l'autre aux extrémités dans des noeuds de liaison (91), caractérisé en ce que le corps pouvant être mis sous pression pneumatique présente des plaques de pression pneumatiques à fibres transversales (100, 165, 113 à 116) réalisées sous forme de corps Drop Stitch.
  2. Support pneumatique selon la revendication 1, des points de liaison étant prévus sur l'élément de compression (96, 128 à 131') et sur l'élément de traction (98, 138 à 141') pour au moins un élément de liaison (93, 94, 144 à 147') pouvant être chargé en traction et s'étendant entre l'élément de compression (96, 128 à 131') et l'élément de traction (98, 138 à 141').
  3. Support pneumatique selon la revendication 1, dans lequel l'élément de liaison (93, 94, 144 à 147') s'étend en zigzag entre l'élément de compression (96, 128 à 131') et l'élément de traction (98, 138 à 141') en passant respectivement par plusieurs points de liaison (160, 161) aussi bien dans la zone de l'élément de compression (96, 128 à 131') que dans la zone de l'élément de traction (98, 138 à 141'), et de préférence au moins un élément de liaison (93, 94, 144 à 147') étant prévu sur chacun des côtés extérieurs du support pneumatique (90, 110, 150).
  4. Support pneumatique selon la revendication 1 ou 2, dans lequel il est prévu au moins un élément de liaison (93, 94, 144 à 147') qui s'étend de manière continue en forme de zigzag sur toute la longueur du corps pneumatique (112).
  5. Support pneumatique selon la revendication 2, dans lequel l'élément de compression (96, 128 à 131') et l'élément de traction (98, 138 à 141') présentent des points de liaison (160, 161) disposés sur leur longueur, dans lesquels des forces sont introduites par le au moins un élément de liaison (93, 94, 144 à 147'), et dans lequel le corps pneumatique présente des formations (99) s'étendant entre des points de liaison (160, 161) voisins, qui font saillie vers l'extérieur au-delà d'une liaison droite entre les points de liaison (160, 161) voisins, les formations (99) étant de préférence prévues sur le côté de l'élément de traction (98, 138 à 141').
  6. Support pneumatique selon la revendication 4, dans lequel les formations (99) sont formées par des plaques de pression pneumatiques à fibres transversales (100, 165, 113 à 116).
  7. Support pneumatique selon la revendication 6, dans lequel des plaques d'impression à fibres transversales (100, 165, 113 à 116) sont formées de telle sorte que les formations (99) sont formées par leurs fibres transversales.
  8. Support pneumatique selon la revendication 1, dans lequel le corps pouvant être mis sous pression pneumatique comprend des plaques d'impression à fibres transversales pneumatiques (100, 165, 113 à 116) empilées les unes sur les autres, les couches étant de préférence constituées chacune de plusieurs plaques d'impression à fibres transversales (100, 165, 113 à 116) disposées les unes derrière les autres et contiguës les unes aux autres, qui sont décalées par rapport à une couche adjacente.
  9. Support pneumatique selon la revendication 8, dans lequel le au moins un élément de liaison (93, 94, 144 à 147') est conçu de telle sorte que les plaques d'impression à fibres transversales pneumatiques (100, 165, 113 à 116) restent en dessous de leur épaisseur maximale due aux fibres transversales.
  10. Support pneumatique selon la revendication 9, dans lequel le au moins un élément de liaison et un empilement de plaques de pression à fibres transversales pneumatiques (100, 165, 113 à 116) s'étendant sur la hauteur du corps pneumatique sont conçus de telle sorte que, sous la pression de fonctionnement des plaques de pression à fibres transversales (100, 165, 113 à 116), mais en cas de perte de pression dans l'une des plaques de pression à fibres transversales (100, 165, 113 à 116), avec l'expansion qui en résulte des autres plaques de pression à fibres transversales (100, 165, 113 à 116), l'expansion maintient la hauteur du corps pneumatique (90, 110, 150) sensiblement constante.
  11. Support pneumatique selon la revendication 6, dans lequel des plaques d'impression pneumatiques à fibres transversales (100, 165, 113 à 116) avec des formations reposent sur des éléments de support flexibles (106), qui sont de préférence réalisés sous forme de bandes, et dans lequel ces bandes s'engagent sur des supports transversaux (97) prévus à l'endroit des points de liaison (160, 161), qui sont à leur tour reliés de manière opérationnelle à au moins un élément de liaison (93, 94, 144 à 147').
  12. Support pneumatique selon la revendication 5, dans lequel l'élément de compression (96, 128 à 131') ou de traction (98, 138 à 141') prévu du côté des formations (99) est en contact avec les formations (99), mais passe au-dessus des points de liaison (160, 161) entre des formations (99) adjacentes.
  13. Support pneumatique selon la revendication 1, dans lequel des plaques de compression transversales (100, 165, 113 à 116) s'étendent entre l'élément de compression (96, 128 à 131') et l'élément de traction (98, 138 à 141'), sur au moins une partie de la hauteur du support (90, 110, 150), de préférence sur toute sa hauteur.
  14. Support pneumatique selon la revendication 13, dans lequel des plaques de pression transversales (100, 165, 113 à 116) s'étendant sur la hauteur du support sont disposées chacune sur toute la longueur (l) du support (90, 110, 150).
  15. Support pneumatique selon la revendication 13, dans lequel des plaques d'impression transversales (100, 165, 113 à 116) s'étendant sur la hauteur du support sont disposées sur toute la largeur du support (90, 110, 150).
  16. Support pneumatique selon la revendication 13, dans lequel il est prévu au moins une plaque d'impression à fibres transversales (100, 165, 113 à 116) qui s'étend au moins partiellement sur la hauteur du support (90, 110, 150), qui forme un renflement (99) entre deux points de liaison (160, 161).
  17. Support pneumatique selon la revendication 13 ou 16, dans lequel au moins une plaque de fibres transversales (100, 165, 113 à 116) présente, en fonctionnement, un côté longitudinal arrondi, qui est de préférence logé à son tour dans une membrane (123 à 126) formant une cuvette identique, qui est elle-même tendue par des éléments de traction (98, 138 à 141') ou de compression (96, 128 à 131').
  18. Support pneumatique selon la revendication 13 ou 16, dans lequel au moins une plaque de fibres transversales (100, 165, 113 à 116) présente, en fonctionnement, un côté longitudinal aplati sur lequel repose un élément de compression (96, 128 à 131') ou de traction (98, 138 à 141') en forme de plaque.
  19. Support pneumatique selon la revendication 13 ou 16, dans lequel au moins une plaque de fibres transversales (100, 165, 113 à 116) présente en service un côté longitudinal aplati (133 à 136) sur lequel repose un élément de support en forme de plaque (127) pour des éléments de pression (96, 128 à 131') ou d'éléments de traction (98, 138 à 141'), un élément de compression (96, 128 à 131') ou de traction (98, 138 à 141') relié à la plaque de support s'étendant au moins sur un côté d'au moins une plaque de fibres transversales (100, 165, 113 à 116).
EP18720081.1A 2017-05-16 2018-04-25 Support pneumatique Active EP3625391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00646/17A CH713818A1 (de) 2017-05-16 2017-05-16 Pneumatischer Träger.
PCT/CH2018/050012 WO2018209453A1 (fr) 2017-05-16 2018-04-25 Support pneumatique

Publications (3)

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EP3625391A1 EP3625391A1 (fr) 2020-03-25
EP3625391B1 true EP3625391B1 (fr) 2023-10-11
EP3625391C0 EP3625391C0 (fr) 2023-10-11

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EP18720081.1A Active EP3625391B1 (fr) 2017-05-16 2018-04-25 Support pneumatique

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US (1) US11542672B2 (fr)
EP (1) EP3625391B1 (fr)
JP (1) JP7002147B2 (fr)
CH (1) CH713818A1 (fr)
WO (1) WO2018209453A1 (fr)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636457A (en) * 1950-08-22 1953-04-28 Boeing Co Collapsible truss structure
US5735083A (en) * 1995-04-21 1998-04-07 Brown; Glen J. Braided airbeam structure
DE50106726D1 (de) * 2000-03-27 2005-08-18 Airlight Ltd Ag Biasca Pneumatisches bauelement
CA2454241C (fr) * 2001-07-20 2009-01-27 Prospective Concepts Ag Element de construction ou de pontage pneumatique
DE502004006268D1 (de) * 2003-07-18 2008-04-03 Prospective Concepts Ag Pneumatischer träger
US8820000B2 (en) * 2003-07-18 2014-09-02 Prospective Concepts Ag Pneumatic support
CA2543798C (fr) * 2003-11-04 2012-09-25 Prospective Concepts Ag Structure pneumatique plane
CH704442B1 (de) * 2005-12-23 2012-08-15 Prospective Concepts Ag Pneumatisches Bauelement.
CN101365854B (zh) * 2005-12-23 2012-08-08 未来概念公司 气动结构构件
CH705206B1 (de) * 2006-06-23 2012-11-30 Prospective Concepts Ag Pneumatische Tragstruktur.
ATE519905T1 (de) * 2007-11-19 2011-08-15 Prospective Concepts Ag Faltbarer pneumatischer träger
CA2678232C (fr) * 2008-09-05 2016-03-08 Dynamic Shelters Inc. Methode et dispositif de repartition de la charge sur une poutre pneumatique
CA2678115A1 (fr) * 2008-09-05 2010-03-05 Stanislaw A. Lukasiewicz Poutre pneumatique avec elements raidisseurs, et structure de poutres pneumatiques
US9435060B2 (en) * 2012-05-01 2016-09-06 University Of Maryland Continuous wound composite truss structures
CH709686A2 (de) * 2014-05-22 2015-11-30 Pibridge Ltd Pneumatischer Träger.
CH712565A1 (de) * 2016-06-08 2017-12-15 Pibridge Ltd Pneumatischer Träger.

Also Published As

Publication number Publication date
CH713818A1 (de) 2018-11-30
EP3625391A1 (fr) 2020-03-25
JP2020520423A (ja) 2020-07-09
WO2018209453A1 (fr) 2018-11-22
US20200399842A1 (en) 2020-12-24
JP7002147B2 (ja) 2022-01-20
US11542672B2 (en) 2023-01-03
EP3625391C0 (fr) 2023-10-11

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