EP3625391A1 - Support pneumatique - Google Patents

Support pneumatique

Info

Publication number
EP3625391A1
EP3625391A1 EP18720081.1A EP18720081A EP3625391A1 EP 3625391 A1 EP3625391 A1 EP 3625391A1 EP 18720081 A EP18720081 A EP 18720081A EP 3625391 A1 EP3625391 A1 EP 3625391A1
Authority
EP
European Patent Office
Prior art keywords
pneumatic
pressure
fiber
cross
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.)
Granted
Application number
EP18720081.1A
Other languages
German (de)
English (en)
Other versions
EP3625391B1 (fr
EP3625391C0 (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
Original Assignee
Pibridge Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pibridge Ltd filed Critical Pibridge Ltd
Publication of EP3625391A1 publication Critical patent/EP3625391A1/fr
Application granted granted Critical
Publication of EP3625391B1 publication Critical patent/EP3625391B1/fr
Publication of EP3625391C0 publication Critical patent/EP3625391C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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 and a method for its production according to claim 10.
  • Pneumatic carriers of the type mentioned are known and are based on a cylindrical basic shape according to WO 01/73245. This basic form has, inter alia, 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 is too collapsible and the tension members can be formed as ropes.
  • a disadvantage of such pneumatic supports is that they can carry high surface loads, are therefore suitable for many applications, but are only limitedly suitable for asymmetric loads in comparison to the possible surface load, which in particular prevents the use as a bridge, since one over a bridge rolling axle, such as a truck, in this respect represents a particularly unfavorable case.
  • FIG. 1 shows a pneumatic support 1 according to WO 2005/042 880 with a pressure member 2, a tension member 3 and a dashed lines, between the pressure member 2 and tension member 3 arranged inflatable pneumatic body 4, which is inflated to operating pressure and so the pressure member 2 and the tension member 3 keeps at a distance.
  • the pneumatic body 4 consists of a gas-tight, flexible, essentially non-stretchable material which forms a collapsible cover for transport, which assumes a form adapted to the respective pneumatic support form under operating pressure.
  • the carrier 1 is supported at its ends 6.7 via supports 8.9, there are also the pressure member 2 and the tension member 3 via a node 10,11 connected to each other.
  • a schematically indicated planking 12 allows here to use the carrier 1 as a bridge. The following thought model can explain how the wearer works:
  • the tension member 3 is essentially only subjected to axial tension and the pressure member 2 essentially only to axial pressure, so that the tension member 3 can be formed as a rope and the pressure member 2 as a thin rod.
  • a thin rod under pressure is liable to buckling, with the result that the bending limit of the pressure member 2 determines the load capacity of the carrier 1.
  • connecting elements are arranged, designed as pure tension members 14 which connect the pressure member 2 with the tension member 3.
  • the tension members 14 are suitable for preventing an asymmetrical load to a certain extent that the pressure member 2 lifts off the body 4 at a non-stressed location and thus kinks.
  • the horizontal distance of the tension members 14 is to be optimized by the skilled person 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 or connecting elements for these elements.
  • FIG. 1b shows a pneumatic support 15 according to WO 2015/176 192, which also rests on supports 16, 17 and has two end nodes configured as ramped thresholds 18, 19 and three pneumatic segments 20 to 22, each of the pneumatic segments being one, for example as a pressure rod trained pressure member 23 to 25, a trained here as a pull rod (a pull rope would also be possible) tension member 26 to 28 and a pneumatic body 29 to 31, in turn, each pneumatic body 29 to 31 by its operating pressure the respectively associated pressure member 23rd to 25 and the respectively associated tension member 26 to 28 operatively keeps at a distance.
  • WO 2015/176 192 which also rests on supports 16, 17 and has two end nodes configured as ramped thresholds 18, 19 and three pneumatic segments 20 to 22, each of the pneumatic segments being one, for example as a pressure rod trained pressure member 23 to 25, a trained here as a pull rod (a pull rope would also be possible) tension member 26 to 28 and a pneumatic body 29 to 31, in turn, each pneumatic body 29 to 31 by its
  • 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 connection elements 32, 33 form force introduction points in the pressure members 23 to 25 and in the tension members 26 to 28.
  • FIG. 1c shows a carrier 40, likewise in accordance with WO 2015/176 192, which is constructed analogously to the carrier 15 according to FIG. 1b, here having four pneumatic segments 41 to 44 and a modified longitudinal cross-section, that has a slightly convex top and a highly convex bottom.
  • FIG. 1 d shows a carrier 45, with likewise a plurality of pneumatic segments 46 to 50, with a further modified longitudinal cross-section such that it can be loaded in the manner of a vault.
  • Carriers 1, 15, 40, 45 share the advantage that they can be easily disassembled and assembled on site by mounting the end nodes, compression members, tension members and any fasteners, then inflating the pneumatic bodies and placing them under operating pressure , It is disadvantageous that the beams 1,15,40,45 increasingly become distorted during the pressure build-up and finally, under operating pressure but without load, assume an arcuately curved position, and only under a load their stretched target shown in FIGS In the case of a wearer, in the manner of the support 15 shown in FIG. 1 a, it only takes up strongly and finally only in the case of a support 15, 40, 45 shown in FIGS bend.
  • the curvature (ie the unwanted deformation which results during inflation of the pneumatic bodies 4 and 29-31) takes place in the direction of the greater curvature of the pressure member or of the tension member, so that the carriers of FIGS. 1 a, 1 b and ld without load upward and the carrier according to Figure lc are bent downwards. As a result, the end nodes move in the no-load condition corresponding to each other, which is undesirable.
  • the curvature of the carriers 1, 15, 40 and 45 is schematically illustrated diagrammatically in FIGS. 1 to 4 with reference to their longitudinal center lines, the longitudinal center lines 55 to 58 represented by dashed lines corresponding to the desired position, as illustrated in FIGS. 1 to 1 d.
  • the solid center lines 59 to 62 are shown according to the actual position under operating pressure but load-free (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, wherein for the sake of simplicity, a not shown to relieve the figure, in the middle of the carrier 1, 15, 40 and 45 attacking load is assumed.
  • FIG. 1 shows a comparatively large curvature and also a comparatively large deflection under load. The total displacement of the longitudinal center line is too large for many applications.
  • the pneumatic support 15 shown in Figure lb shows a mean curvature and also only a small, insignificant deflection under load.
  • the only average curvature is due to the fact that the central segment 21 (FIG. 1b) is symmetrical with respect to its longitudinal center line, that is, it is essentially not curved (except for an asymmetry which, for example, results from manufacturing tolerances).
  • curvature or deflection play a role or not - unfavorable is the curvature, for example, in the case of a bridge, which should be as rigid as possible.
  • a bridge formed from supports according to FIG. 1b, is extraordinarily rigid and therefore particularly suitable for its use, but due to the curvature is steeply traversable at the ends and then up to its desired position (line 18) of figure lf) behaves spongy / yielding.
  • the advantage of the bending stiffness is only reduced to advantage.
  • a further object of the present invention is to provide a pneumatic support which, regardless of the phenomenon of the curvature, retains a load capacity even when the pneumatic body is injured with concomitant pressure loss.
  • the pneumatic body has pneumatic cross-fiber pressure plates, it can be easily assembled from numerous segments, such that the loss of the functionality of one or more segments of the carrier still remains viable and thus operational.
  • FIGS. 1 a to 1 d show schematically pneumatic carriers according to the prior art
  • FIG. 2 schematically shows a pneumatic carrier designed according to the invention
  • FIG. 3 a shows schematically a pneumatic support designed according to the invention and secured against pressure loss in the pneumatic body
  • Figure 3b shows the carrier of Figure 3a in cross section
  • FIG. 3c shows an embodiment of the carrier of FIG. 3a in cross section
  • FIG. 4 schematically shows a detail of the carrier of FIG. 3a at the location of a force introduction point situated between two formations
  • FIG. 5 schematically shows a cross section through a further embodiment of the carrier according to the invention.
  • FIG. 6 is a side view of the carrier of FIG. 5.
  • FIG. 2 shows a first embodiment according to the invention of a pneumatic carrier 70, which is constructed on the basis of the carrier 15 of FIG. 1b having three segments 20 to 22.
  • the segments 71 to 73 can be seen, wherein the segments 71 and 73 are modified and the segment 72 corresponds in its construction to the segment 21 of the carrier 15 (FIG. 1b).
  • FIG. 2 also shows the force introduction points 83, 84 and 85 present in the segments 71, 73, wherein the force introduction points 83 connect the connecting element 33, the threshold 18 and the pull cable 77 with one another and thus introduce the corresponding forces into the pull cable 77.
  • the force application points 85 connect the tension rod 78, the connection element 33 or 34 and the pull cable 77, whereby the corresponding forces are introduced into the pull cable 77.
  • the force application points 84 connect the pull cable 77 with the connecting elements 32, 33 and introduce the corresponding forces into the pull cable 77.
  • Between adjacent force introduction points 83, 84 or 84, 84 and 84, 85 are in the pneumatic see bodies 80,82 formations provided 86 to 89, which are provided according to the embodiment of Figure 2 on the side of the tension member.
  • the formations 86 to 89 results according to the invention in the pneumatic bodies 80,82 by the operating pressure an equilibrium of forces in which a deformation of the pneumatic body by the operating pressure - in contrast to the prior art - essentially eliminated.
  • the formations 86 to 89 are advantageously, and as shown in FIG. 2, arc-shaped, more 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 from 10 to 15% of the distance of these force introduction points 83 to 85.
  • the Applicant has found that such a height already effectively reduces the unwanted curvature.
  • the tension member 77, 79 is 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 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 of the force introduction points 83,85 under operating pressure, and then to a more complicated design of the entire segment 71,73 with respect to the pressure rod 74,76, the pressure body 80th , 82, the traction cable 77,79 and the contour of the formations 86 to 89 leads, which is very expensive to calculate and therefore should be determined by experiments with.
  • a pneumatic support (with one or more longitudinally asymmetric pneumatic bodies) at which under operating pressure, but load-free, whose side having the pressure member curved at least partially arcuate and having the tension member Side is formed such that its force application points lie substantially on a straight line.
  • the configuration of the pneumatic support according to Figure 2 can be modified, for example, by the middle segment is omitted, so that the pressure member having side is curved continuously arcuate.
  • the applicant has determined in a simulation, the curvature of a 38 m long pneumatic support for a service load of 4.5 t with continuous arcuate pressure member and straight tension member (such a configuration should be particularly convenient to build in the field, since the tension member or the underside of the pneumatic support then rests on the ground).
  • the curvature leads to a "hump" of the carrier with a height of about 1 meter, with the tension member in the middle of the carrier about the same height from the ground lifts the invention provided with formations pneumatic support with otherwise identical configuration
  • the support of the prior art was substantially free of the curvature, which was only in the range of about 10 cm
  • the invention results in a pneumatic support with one (or more) pneumatically pressurizable pneumatic body, the operating pressure a pressure member extending substantially over its length and a tension member likewise extending essentially over its length are operatively spaced apart from one another, wherein forces are introduced into the end portions of the pressure member and the tension member in force introduction points and between the pressure member and the Tension member foresee connecting elements n, which also initiate forces in force application points in the pressure member and the tension member, wherein the pneumatic body has between adjacent force introduction points extending formations which project outwardly beyond a straight connection between the adjacent force introduction points.
  • the pneumatic support preferably comprises a flexible sleeve (namely the pneumatic body or, in the case of multiple segments, a plurality of pneumatic bodies with a plurality of flexible sheaths) whose pattern determines the shape of the wearer under operating pressure such that form the formations in a predetermined contour.
  • a flexible sleeve namely the pneumatic body or, in the case of multiple segments, a plurality of pneumatic bodies with a plurality of flexible sheaths
  • the zig-zag shaped continuously through the entire length of the pneumatic body extends, and which particularly preferably as mentioned above at an angle of 45 ° with respect to the intended load direction (in the case of a bridge so 45 ° to the horizontal). Therefore, the adjacent force introduction points have different distances to each other when the distance between the pressure member and the tension member changes, as is the case from the embodiment according to FIG. 2 in the segments 71, 73 or in general over a length of asymmetrically formed pressure bodies.
  • the formations 86 to 89 have different heights, since this height is preferably determined in relation to the distance of the associated force introduction points.
  • the height of the formations is determined particularly simply iteratively.
  • the height is determined to be 10 to 15% of the distance of the assigned (ie adjacent) force introduction points.
  • the pneumatic support may still have an undesirable residual curvature, so that in a second step the height of the formations is further increased by 30-50% (at an initial 10% increase, the resulting height would then be between 13 and 15% of the distance of the adjacent ones Force introduction points lie).
  • This iterative process converges very quickly in most configurations of a pneumatic support to be determined by a person skilled in the art for the specific case, but can easily continue until the distortion substantially disappears or no further improvement occurs for the intended use of the support.
  • arcuate, preferably arcuate, formations are preferably provided in a pneumatic carrier, the height of which amounts to 10 to 15% of the distance of the assigned force introduction points.
  • 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 limiting force introduction points of 10 to 15% of the distance of these force application points.
  • the pneumatic carrier designed according to the invention is constructed and the pneumatic body of the carrier is brought to operating pressure and a check is made as to whether a continued The curvature of the carrier is present, and in the positive case the height of selected formations increased by 30-50%.
  • the skilled person will increase all the forms uniformly, but may change only selected formations in a special form of the affected pneumatic body, for example by experiments).
  • the iterative process can be continued, i. iteratively, the height of the formations are increased until a further increase results in no further improvement in the curvature of the unloaded beam.
  • a method for manufacturing a pneumatic carrier in which the shape of the pneumatic support provided in operation and the location of the force introduction points and then the curvature to be expected under operating pressure but without operating load are determined in advance, and then formations on the Curved inside of the pneumatic support are provided, which extend from the force application point to force introduction point via a connecting line between the associated force introduction points to the outside.
  • Figure 3a shows the right half of a carrier 90, with a right end node 91 and the line of symmetry 92, which limits the right half (the left half is, according to the symmetry line, formed symmetrically to the right half).
  • the basic structure of the carrier 90 is analogous to the carrier 70 ( Figure 2), but may also correspond to a carrier according to the figures la to ld or similar pneumatic carriers.
  • two connecting elements 93, 94 are provided in the carrier 90, one each running along one of the outer sides of the carrier 90.
  • the visible in the direction of the figure 3a connecting element 93 covers behind this, lying on the other side of the carrier 90 connecting element 94.
  • the connecting elements run zig-zag along the carrier 90 along 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 operatively connected. Shapings 99 are located on the side of the tension member 98.
  • pneumatic fiber pressure plates 100 are pneumatic, ie inflatable, flat body, with an outer shape similar to an air mattress, inside which are arranged between the bottom part of the shell and the cover part of the sheath fibers, which connect bottom part and cover part, so that the plate-shaped contour of the fiber pressure plates 100th also maintained under operating pressure.
  • pneumatic fiber printing plates are known to the person skilled in the art as "drop stitch" bodies and may consist of polyester / PVC membranes or else other flexible materials such as Hypalon.
  • the entire pneumatically pressurizable body of the carrier 90 is formed of laminated pneumatic fiber pressure plates 100, which are arranged in layers, wherein preferably the layers each consist of a plurality of successively arranged and abutting fiber pressure plates 100 opposite to an adjacent one Layer are arranged offset.
  • some fiber printing plates 100 are omitted (which, of course, must be present in an operable embodiment of the carrier 100).
  • the fiber pressure plates 100 are horizontally aligned in the illustrated embodiment.
  • fiber printing plates 100 are advantageous because the individual printing plates are airtight, a reserve blower can be omitted. Failure of such a fiber pressure plate, for example, by injury from the outside, the carrying capacity of the carrier 90 is only minimally reduced. A failed fiber printing plate 100 can be easily replaced.
  • the fiber pressure plates 100 can be dimensioned arbitrarily, that is to say cut to a carrier 90 designed individually for the specific case. At the same time, the fiber printing plates, according to the Lego system, can be of standardized size and be used for a wide variety of carriers. The inherent rigidity of fiber printing plates 100 increases the inherent rigidity of the carrier 100.
  • the entire support 90 (which can reach or exceed a length of for example 10m, 20m, 30m or 40m) thanks to the light and comparatively small dimensions having individual components without any machinery (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 printing plates are then arranged, for example, on areas of the pneumatic support which are susceptible to injury, for example, where a load acts or the surface of the carrier is otherwise exposed.
  • the pneumatically pressurizable body comprises pneumatic fiber pressure plates.
  • connecting points for at least one, zugbelastbares connecting element extending between the pressure member and the tension member are provided on the pressure member and the tension member.
  • cross-fiber pressure plates 165 are preferably formed in such a way that the formations are formed via their transverse fibers, whereby the pattern of the envelope of the respective transverse fiber pressure plates 165 can be formed accordingly.
  • FIG. 3b shows the carrier 90 in cross-section at the location of a force introduction point 97. Shown are stacked pneumatic fiber plates 100, with a bottom fiber plate 101 here, which correspond to the formations for reduced curvature of the carrier 90. is formed speaking. Also visible is the pressure member 96 (now seen in cross-section) as the deck plate, as well as a series of tension members 97 running along the underside of the fiber pressure plates 101 so that the fiber pressure plates 101 with their formations are arranged parallel to each other (eg Wire cables) tension members 97 rest.
  • Cross bars 105 form the ends of the force application points 97, to which the connecting elements 97 attack, at the same time flexible support members 106 for the lowermost fiber printing plates 105, which rest on the flexible support members 106.
  • FIG. 3c shows two side-by-side supports 90 in cross-section, wherein, for example, each support 90 can serve as a roadway for one side of a vehicle.
  • FIG. 4 schematically shows a section of the carrier of FIG. 3a at the location of a force introduction point 97 located between two formations 99.
  • the course of the flexible carrier elements 106, the contour of the pneumatic fiber pressure plates 101, and the profile of the connecting elements 93, 94 are evident ,
  • a support according to the invention having a pneumatic fiber pressure plate, for example a support according to FIG. 3, can now be designed so that the connection elements 93, 94 (or the connection elements according to FIGS. 1 to 2) at operating pressure of the pneumatically pressurizable body Full expansion of the fiber printing plates is not possible - these then remain below the maximum allowable through the fibers, maximum thickness.
  • the connection elements 93, 94 or the connection elements according to FIGS. 1 to 2
  • Full expansion of the fiber printing plates is not possible - these then remain below the maximum allowable through the fibers, maximum thickness.
  • the pneumatic support retains full functionality even though its pneumatically pressurizable body has been injured and partially rendered inoperable.
  • the result is preferably a pneumatic support in which the at least one connecting element is designed such that pneumatic cross-fiber pressure plates remain below their maximum cross-fiber-related thickness. More preferably, then the at least one connecting element and extending over the height of the pneumatic body layers of pneumatic cross-fiber pressure plates are designed such that under operating pressure of the cross-fiber pressure plates, but at pressure loss in one of the cross-fiber pressure plates with the associated expansion of other cross-fiber pressure plates, the expansion of the height of the pneumatic body essentially constant.
  • pneumatic cross-fiber pressure plates rest with formations on flexible support members, which are preferably formed as bands, and wherein these bands engage at the location of the force introduction points provided cross members, which in turn are operatively connected to the at least one connecting element.
  • FIG. 5 shows a cross section through a pneumatic support 110 according to the invention in accordance with a further embodiment.
  • the carrier 110 here has a width b, a height H and a length I, s. the coordinate system 111, thus runs horizontally and is again illustrated by the example of a bridge.
  • the pneumatic body 112 of the carrier 110 has juxtaposed, across its height h extending transverse fiber pressure plates 113 to 116, which are arranged longitudinally on the carrier. The transverse fiber pressure plates are thus arranged vertically.
  • the one (here: lower) longitudinal side of the cross-fiber pressure plates 113 to 116 is preferably rounded.
  • This rounding 118 to 121 can be formed by the cutting pattern of the sheath of the transverse fiber plates 113 to 116 in conjunction with correspondingly long transverse fibers, or simply by the correspondingly tailored longitudinal side of the sheath being arched outward by the internal pressure.
  • a membrane 123 to 126 receives over a rounding 118 to 121 the same shape shaped trough the curves 118 to 121 and so stores the transverse fiber plates 113 to 116, which thus can be loaded by a load acting from above 127.
  • the membranes 123 to 126 in turn to tension members 128, 128 'attached to 131,131' of the support 110 are spanned by this in each case to 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 anchored either to nodes of the carrier 110 which are not visible in the figure (for example the nodes or ramps 18, 19 of FIG. 2 or the node 91 of FIG. 3 a) or, in the case of FIG Segments such as a segment 71 to 73 connected to connecting points 83, 85 (see Figure 3).
  • the expert can also, or only, the upper longitudinal side of the cross-fiber plate 113 to 116 provided with the rounding 118 to 121 and then connect via a membrane 123 to 126 operatively connected to the pressure members 138,138 'to 141,141'.
  • At least one (in the illustrated embodiment, it is all) transverse fiber plates in operation have a rounded longitudinal side, which are preferably in each case stored in a re umende a trough forming preferably flexible membrane, the troughs in turn by train or Pressure members are clamped.
  • the other (here: upper) longitudinal sides 133 to 136 of the transverse fiber pressure plates 113 to 116 are preferably flattened, wherein a support plate 132 receiving the load 127 (which may be a lane plate in the case of a bridge) rests on the flattened longitudinal sides 133 to 136. Laterally on the upper longitudinal sides 133 to 136 extending pressure members 138,138 'to 141,141' are connected to the support plate 132, preferably screwed.
  • the flattened longitudinal side 133 to 136 is preferably produced by the correspondingly cut casing of the transverse fiber pressure plates 113 to 116 and is particularly suitable for taking over a load transmitted through the carrier plate 132 and over the diaphragms 123 to 126 to the tension members 128, 128 'to 131, 131'. transferred to.
  • the person skilled in the art may also, or only, flatten the lower longitudinal side of the transverse fiber plate 113 to 116 and then operatively connect, for example via a carrier plate 132, with the tension members 128, 128 'to 131, 131'.
  • connecting elements 144, 144 'to 147, 147' are arranged on the sides of the cross-fiber plate 113 to 116, with the corresponding connection points being omitted in order to relieve the figure.
  • These connecting elements correspond to the connecting elements 32, 33 of FIG. 2 and 93, 94 of FIG. 3, respectively.
  • At least one transverse fiber plate in operation have a flattened longitudinal side, on which a plate-shaped carrier element for printing or tensile members rests, wherein at least on one side of the at least one transverse fiber plate is connected to the carrier plate connected to a pressure or tension member.
  • a preferably plate-shaped pressure or tension member rest directly on the flattened longitudinal side 133 to 136.
  • some of the transverse fiber plates may be disposed only over part of the height of the carrier 110 or, for example, the transverse fiber pressure plates 114 and 115 may be replaced by a single pneumatic body having an inflatable envelope.
  • the transverse fiber pressure plates are moreover preferably arranged over the entire length of the carrier.
  • transverse fiber pressure plates extending over the height of the carrier are preferably arranged over the entire width of the carrier, as shown in FIG.
  • the cross-fiber pressure plates 113 to 116 may have a rectangular, trapezoidal or other, in the specific case suitable configuration. They may be the entire length of the carrier, or the length of a segment (for example, the segments 71 to 73 of FIG. 2) or shorter.
  • FIG. 6 shows a segment 150 of a pneumatic support of the type shown in FIG. 5 in the lateral view A according to FIG. 5.
  • the segment 150 here corresponds to the segment 72 of the support 70 of FIG. 2.
  • the vertically arranged cross-fiber pressure plate 113 which obscures the other cross-fiber printing plates 114-116.
  • the connecting elements 144 covered by the cross-fiber pressure plate 113 are the other connecting elements 144 'to 147'.
  • the pressure member 138 and the tension member 128 are also visible.
  • the membrane 123 can be seen, the membranes 124 to 126 are covered.
  • the connection points 160 correspond to the connection points 84 of FIG. 2 and the connection points 95 of FIG. 3a, respectively.
  • the connection points 161 speak the connection points 85 of Figure 2, as the segment 150 is mated with other segments.
  • FIG. 6 shows by way of example a segment 150 of a pneumatic carrier according to one of FIGS. 1 to 5.
  • a non-segmented carrier according to FIGS. 5 and 6 may also be formed.
  • a segment or carrier can also be provided with formations according to FIG. 2, s.
  • both the cross-fiber pressure plates 113 to 116 with arcuate curves 118 to 121, for example, by a corresponding pattern of the envelope of the cross-fiber printing plates 113 to 116 and the membrane 123 to 126 (also for example by a corresponding cutting pattern) are formed accordingly.
  • there is at least one cross-fiber pressure plate which extends at least partially over the height of the carrier, and forms a bulge between two connection points.
  • FIGS. 5 and 6 has the advantage that only comparatively few transverse fiber pressure plates are required and the prestressing of the connecting elements is simple. Furthermore, it should generally be noted that there are practically only three elements for transport and assembly: the carrier plate (or carriageway plate), the cross-fiber pressure plates and the tension and compression members together with the connecting elements, tensile and compression members and connecting elements being able to be preassembled.
  • the carrier plate can be made of glued laminated timber, but also as a steel lattice grate, or as a sandwich composite material.
  • steel profiles rectangular or also open C or H profiles
  • extruded aluminum profiles can be used.
  • fiberglass profiles or composite materials are also possible.
  • connecting elements steel cables Kevlar bands or other plastic tension members can be used.
  • the connecting elements may also be designed as Dyneema bands, i. consisting of Ultra-High Molecular Weight Polyethylene (UHMWPE) produced by DSM in Holland or Honeywell's Spectra plastic.
  • the membranes which receive the curves of the cross-fiber pressure plates may 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)

Abstract

L'invention concerne un support pneumatique comprenant un corps (112) qui peut être mis pneumatiquement sous pression et qui, sous l'effet d'une pression de service, maintient un organe de pression (96, 128 à 131') s'étendant sensiblement sur toute sa longueur et un organe de traction (98, 138 à 141') s'étendant également sensiblement sur toute sa longueur (I) fonctionnellement à distance l'un de l'autre, l'organe de pression (96, 128 à 131') et l'organe de traction (98, 138 à 141') étant reliés l'un à l'autre côté extrémité en nœuds de liaison (91) et le corps pouvant être mis pneumatiquement sous pression présentant des panneaux de pression pneumatiques à fibres transversales et à mailles tombées (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)

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

Family

ID=60164545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18720081.1A Active EP3625391B1 (fr) 2017-05-16 2018-04-25 Support pneumatique

Country Status (5)

Country Link
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
WO2001073245A1 (fr) * 2000-03-27 2001-10-04 Mauro Pedretti Element constitutif pneumatique
DE50201807D1 (de) * 2001-07-20 2005-01-20 Prospective Concepts Ag Glattb Pneumatisches bau- oder brückenelement
US20060273233A1 (en) * 2003-07-18 2006-12-07 Mauro Pedretti Pneumatic support
US8820000B2 (en) * 2003-07-18 2014-09-02 Prospective Concepts Ag Pneumatic support
US7900401B2 (en) * 2003-11-04 2011-03-08 Airlight Limited (Ag) Pneumatic two-dimensional structure
EP1989377A1 (fr) * 2005-12-23 2008-11-12 Prospective Concepts AG Element de construction pneumatique et toit construit a partir de celui-ci
CH704442B1 (de) * 2005-12-23 2012-08-15 Prospective Concepts Ag Pneumatisches Bauelement.
CH705206B1 (de) * 2006-06-23 2012-11-30 Prospective Concepts Ag Pneumatische Tragstruktur.
ES2371518T3 (es) * 2007-11-19 2012-01-04 Prospective Concepts Ag Soporte neumático plegable.
CA2678232C (fr) * 2008-09-05 2016-03-08 Dynamic Shelters Inc. Methode et dispositif de repartition de la charge sur une poutre pneumatique
US20100146868A1 (en) * 2008-09-05 2010-06-17 Stanislaw Lukasiewicz Air Beam with Stiffening Members and Air Beam Structure
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
US20200399842A1 (en) 2020-12-24
CH713818A1 (de) 2018-11-30
EP3625391B1 (fr) 2023-10-11
US11542672B2 (en) 2023-01-03
JP2020520423A (ja) 2020-07-09
JP7002147B2 (ja) 2022-01-20
EP3625391C0 (fr) 2023-10-11
WO2018209453A1 (fr) 2018-11-22

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