EP1656483B1 - Support pneumatique - Google Patents

Support pneumatique Download PDF

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Publication number
EP1656483B1
EP1656483B1 EP04738025A EP04738025A EP1656483B1 EP 1656483 B1 EP1656483 B1 EP 1656483B1 EP 04738025 A EP04738025 A EP 04738025A EP 04738025 A EP04738025 A EP 04738025A EP 1656483 B1 EP1656483 B1 EP 1656483B1
Authority
EP
European Patent Office
Prior art keywords
hollow body
compression
tension elements
pneumatic support
support
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
EP04738025A
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German (de)
English (en)
Other versions
EP1656483A1 (fr
Inventor
Mauro Pedretti
Rolf H. Luchsinger
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.)
Prospective Concepts AG
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Prospective Concepts AG
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.)
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Publication date
Application filed by Prospective Concepts AG filed Critical Prospective Concepts AG
Priority to PL04738025T priority Critical patent/PL1656483T3/pl
Publication of EP1656483A1 publication Critical patent/EP1656483A1/fr
Application granted granted Critical
Publication of EP1656483B1 publication Critical patent/EP1656483B1/fr
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Classifications

    • 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
    • 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
    • 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
    • E04H2015/205—Tents or canopies, in general inflatable, e.g. shaped, strengthened or supported by fluid pressure with inflatable panels, without inflatable tubular framework made from two sheets with intermediate spacer means

Definitions

  • the present invention relates to a pneumatic carrier according to the preamble of claim 1.
  • Pneumatic carriers in the form of inflatable hollow bodies have become known several, such as for example US 3,894,307 (D1) and off WO 01/73245 (D2) of the same applicant as the present invention. If such a carrier is loaded transversely, the task to be solved is, above all, to absorb the tensile and shear forces that occur without the carrier buckling.
  • the axial compressive forces are absorbed by a pressure rod, while the axial tensile forces are absorbed by two tensioning elements spirally wound around the hollow body and attached to the pressure rod ends.
  • the pneumatic part of the components described there has the task of stabilizing the pressure bars against buckling.
  • D1 several hollow bodies are combined in parallel to form a bridge.
  • the tensile forces are absorbed by a flexible, all hollow body envelope, the pressure forces by the juxtaposed elements bridge plate.
  • the elements are attached laterally to the envelope comprising the hollow body and are thus secured against buckling.
  • D2 is the closest document to the present invention.
  • D 2 (see Fig. 8 ) discloses a carrier according to the preamble of claim 1.
  • the disclosed in D2 pneumatic component has at least two, due to their winding around the hollow body in comparison to the length of the component relatively long tension elements. This leads to greater deflection under load than when using shorter tension elements.
  • the above at the component and not at the outermost end of the same node for receiving the support forces require relatively complex support structures when used as a carrier.
  • the tension element is a large-scale shell which can absorb only limited tensile forces and can only be tensioned with great technical effort.
  • the object of the present invention is to provide pneumatic supports with tension and compression elements, which have a high flexural rigidity, simple and produced inexpensively, easily assembled to more complex components and structures such as roofs and bridges, the erection can be done very quickly and also can be easily connected to conventional building structures.
  • FIG. 1 is a schematic representation of a carrier.
  • a carrier 1 consists of a tapered towards the ends, elongated hollow body 2, a push rod 3 and a tension element 4.
  • the hollow body 2 is formed by a sheath 7 of gas-tight flexible low-stretch material. Since these properties are difficult to combine in one material, the hollow body 2 is advantageously constructed of an outer low-expansion flexible sheath 7 and an inner gas-tight, elastic bladder.
  • the hollow body 2 can be acted upon via a valve 6 with compressed gas.
  • Both the push rod 3 and the tension element 4 lie along this diametrically opposite generatrices of the hollow body 2 at this.
  • the push rod 3 is connected by suitable means along this generatrix with the hollow body 2 frictionally.
  • This pneumatic carrier 1 is for applications suitable in which pressure forces act only in one direction on the carrier 1. For example, this essentially applies to a bridge girder on which the weight of the dead weight of the bridge and the payload is exercised.
  • Push rod 3 and tension element 4 lie in the plane of action of the load vector, which acts on the push rod 3 and points in the direction of tension element 4.
  • the hollow body 2 prevents buckling of the pressure rod 3, whereby the material of the pressure rod 3 can be loaded to the flow limit. This is at a much higher power than the buckling load of a rod.
  • Fig. 1a shows a side view
  • Fig. 1b shows the section AA.
  • Fig. 2 shows a first embodiment of a pneumatic support 1, as it can be used for roof structures, for example.
  • a pneumatic support 1 In strong wind strong suction forces can be exerted on areas of a roof, which more than compensate for the load forces in the vertical direction. This leads to a reversal of the force effect in the carrier 1 used in this way.
  • Fig. 2 became the underlying exclusive tension element 4 of Fig. 1 replaced by a pressure / tension element 5; an element that can absorb both compressive and tensile forces.
  • the simplest and most common case of a pressure / tension element 5 is a second pressure rod 3.
  • such a rod made of steel or aluminum can be made, since these materials have similar good tensile and Drukkeigenticianen.
  • Fig. 2 enclose two pressure / tension elements 5 the hollow body 2 along two diametrically opposite generatrices.
  • the pressure / tension elements 5 are in turn attached to the generatrix to prevent buckling under load.
  • the pressure / tension elements 5 are at their ends interconnected and serve depending on the load direction as a tensile or as a pressure element. It is included in the concept of the invention that the two pressure / tension elements 5 in their properties as a pressure resp. Can distinguish tension element.
  • the pressure / tension elements 5 can be chosen so that the upper resisting greater compressive forces than the lower.
  • Fig. 2a shows a side view
  • Fig. 2b shows the section BB.
  • Fig. 3 a second embodiment of the inventive concept is shown.
  • the beams 1 are loaded substantially in the vertical plane.
  • a carrier 1 is erected vertically, for example, and used as a pillar, the transverse forces essentially no longer occur exclusively in one plane, but can act on the carrier from all sides to a similar extent, such as wind forces.
  • the wearer has 1 in Fig. 3 via three pressure / tension elements 5, which are uniformly distributed around the cross section of the hollow body 2 and are in turn fastened along generatrices to the same and are connected to one another in a force-locking manner at their ends.
  • an axial load also acts on it.
  • Embodiments with more than three pressure / tension elements 5 distributed around the hollow body 2 are included in the concept of the invention.
  • Fig. 3a shows an isometry
  • Fig. 3b shows the cross section CC.
  • a complete carrier 1 with emptied hollow body 2 for example, can be rolled up small for transport or storage, when the pressure / tension elements 5 are made of flexible material.
  • Fig. 4a shows the carrier 1 rolled up with emptied hollow body 2
  • Fig. 4b is the ready-to-use support 1 with pressurized hollow body 2 shown on a reduced scale.
  • Carrier 1 with emptied hollow bodies 2 and flexurally elastic pressure / tension elements 5 or pressure rods 3 can also be folded, for example in S-shaped strokes.
  • FIGS. 5 and 6 Various options for the connection of the pressure / tension elements 5 at the ends of the carrier 1 are shown.
  • Fig. 5 open the pressure / tension elements 5 in a final piece 9, which may include, for example, the end of the hollow body 2.
  • a final piece 9 which may include, for example, the end of the hollow body 2.
  • an axle 8 are attached to insert the carrier in a construction composite; or the end piece 9 may be formed so that it can be placed directly on a camp.
  • Fig. 7 shows an advantageous embodiment of a pressure / tension element 5, which has a wider cross section and thus a higher bending stiffness towards the ends.
  • This construction of the pressure / tension element 5 takes into account the fact that the pressure / tension elements 5 must absorb higher bending moments at the ends of the carrier 1 than in the middle of the carrier 1.
  • the greater flexural rigidity of the pressure / tension elements 5 is achieved towards their ends with a higher cross section.
  • Fig. 8-10 show different embodiments of the hollow body 2.
  • the cross section of the hollow body 2 is substantially circular over the entire length.
  • Other or lengthwise varying cross sections for example, a flattening of the hollow body cross-section for better lateral stability, however, are also included in the inventive concept.
  • Fig. 8 shows an embodiment of an asymmetric hollow body 2 with greater curvature on the upper side of the carrier 1 and with a flat curved bottom. Carrier 1 with such shaped hollow bodies 2 have when used as a bridge carrier with one-sided load on a particularly low deflection.
  • Fig. 9 shows a rotationally symmetrical about the longitudinal axis executed hollow body 2. This is essentially a cylindrical tube with pointed ends.
  • the hollow body 2 in Fig. 10 has a teardrop shape in longitudinal section.
  • FIG. 11-13 Various embodiments are shown with divided into several chambers 10 hollow body.
  • the hollow body is divided transversely to the longitudinal axis into a plurality of chambers 10, which occupy the entire cross section of the hollow body 2.
  • These chambers 10 can be acted upon with different pressures.
  • the example shows a variant with three pressure regimes. The following applies: P0 ⁇ P1 ⁇ P2 ⁇ P3.
  • the prints increase toward the ends of the carrier 1.
  • the hollow body 2 is subdivided into a plurality of chambers 10 which are substantially parallel to the longitudinal direction and which extend essentially over the entire length of the hollow body 2.
  • Fig. 13 shows a combination of longitudinal and transversely divided chambers 10.
  • 11-13 is common that the hollow body consists of a flexible, low-expansion sleeve 7, for example, aramid-reinforced fabric. In this little stretchable sleeve 7 more bubbles 11 are inserted from stretchable, gas-tight material. Additionally, webs 12 recessed into the outer shell 7 may serve to substantially define the position of the pressurized bladders 11 and prevent displacements of these bladders 11 within the shell 7. This is illustratively on one side of the carrier 1 in FIG Fig. 11 shown. However, it is also conceivable and according to the invention to divide a gas-tight envelope 7 with gas-tight webs 12 into a plurality of chambers 10, as in FIG Fig. 12, 13 shown.
  • FIG. 14 shows a further embodiment of the inventive concept.
  • a carrier 1 as in Fig. 2 is curved arcuately upwards and thus has a concave bottom and a convex top.
  • the distance between the two ends of the carrier 1 can be fixed either by clamping the ends in abutment or by means of an outer tension element 14 substantially.
  • the two pressure / tension elements 5 are subjected to pressure, while the tensile forces are absorbed by the abutments or the tension element 14.
  • FIG. 15a-c An example of application of pneumatic supports 1 for the construction of a bridge is shown.
  • Two carriers 1 in the embodiment according to Fig. 1 be united by means of these connecting, resting on the push rods 3 roadway construction 13 to a lightweight bridge.
  • the skilled person is various ways known how such a roadway can be made for example with fiber-reinforced plastics in sandwich construction. It will therefore not be discussed further here.
  • Fig. 15a shows the bridge in plan view
  • Fig. 15b shows the section DD
  • Fig. 15c shows the section EE.

Claims (17)

  1. Support pneumatique (1)
    - avec un corps creux (2) allongé, étanche au gaz et susceptible d'être soumis à un gaz sous pression, en matière flexible ;
    - en outre, avec au moins deux éléments de compression/de traction (5) susceptibles d'absorber des forces de compression, tout comme des forces de traction,
    - lesdits éléments de compression/de traction (5) étant adjacents au corps creux (2) le long d'une ligne d'enveloppe et étant reliés par complémentarité de force avec ce dernier,
    caractérisé en ce que
    - le corps creux (2) a une forme en pointe vers ses deux extrémités,
    - les au moins deux éléments de compression/de traction (5) sont reliés ensemble par complémentarité de force sur leurs extrémités, et les éléments de compression/de traction (5) sont reliés entre eux sur leurs extrémités, de sorte en entourer le corps creux (2).
  2. Support pneumatique (1) selon la revendication 1, caractérisé en ce que les au moins deux éléments de compression/de traction (5) sont disposés de façon symétrique en rotation autour du corps creux (2).
  3. Support pneumatique (1) selon l'une quelconque des revendications 1 et 2, caractérisé en ce que au moins l'un des au moins deux éléments de compression/de traction (5) doit absorber uniquement des forces de traction et de ce fait, est conçu uniquement en tant qu'élément de traction (4) et en ce que au moins l'un des au moins deux éléments de compression/de traction (5) ne doit absorber que des forces de compression et de ce fait, est conçu en tant que barre de compression (3), ladite au moins une barre de compression (3) étant réliée par complémentarité de force sur le corps creux (2), le long d'une ligne d'enveloppe de ce dernier et étant reliée par complémentarité de force sur ses deux extrémités avec au moins un élément de traction (4).
  4. Support pneumatique (1) selon la revendication 3, caractérisé en ce que la au moins une barre de compression (3) s'écoule le long d'une ligne d'enveloppe du corps creux (2) diamétralement opposée à un élément de traction (4) et est fixée par complémentarité de force sur ledit corps creux (2).
  5. Support pneumatique (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le long de l'axe longitudinal, le corps creux (2) présente des sections transversales sensiblement circulaires.
  6. Support pneumatique (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le corps creux (2) est divisé sensiblement à la transversale de l'axe longitudinal en plusieurs chambres (10) susceptibles d'être soumises à pression, lesdites chambres (10) s'étendant sensiblement sur toute la section transversale du corps creux (2).
  7. Support pneumatique (1) selon la revendication 6, caractérisé en ce que les chambres (10) présentent différents régimes de pression, et sont soumises vers les extrémités du corps creux (2) à des pressions plus élevées qu'au centre du corps creux (2).
  8. Support pneumatique (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le corps creux (2) est divisé en plusieurs chambres (10) situées sensiblement à la parallèle de l'axe longitudinal, susceptibles d'être soumises à pression, lesdites chambres (10) s'étendant sensiblement sur toute la longueur du corps creux (2).
  9. Support pneumatique (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que sur les deux extrémités se présentent des pièces de terminaison (9) sur lesquelles des barres de compression (3), des éléments de traction (4) et des éléments de compression/de traction (5) sont fixés par complémentarité de force.
  10. Support pneumatique (1) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les éléments de compression/de traction (5) sont élastiques en flexion et en ce que le support (2) peut être enroulé ou replié, lorsqu'il n'est pas soumis à pression.
  11. Support pneumatique (1) selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la fixation des éléments de compression/de traction (5) sur le corps creux (2) est assurée par
    - plusieurs bandes s'écoulant autour du corps creux (2) et fixées sur les éléments de compression/de traction (5) ou par
    - des poches dans lesquelles les éléments de compression/de traction (5) sont introduits
    - des liaisons par bourrelets.
  12. Support pneumatique (1) selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le corps creux (2) consiste dans une enveloppe (7) extérieure et dans au moins une bulle (11) intérieure insérée dans cette dernière, l'enveloppe extérieure (7) étant fabriquée en une matière flexible et peu extensible et la bulle (11) intérieure étant fabriquée dans une membrane élastique étanche à l'air.
  13. Support pneumatique (1) selon l'une quelconque des revendications 6 à 8 et 12, caractérisé en ce que l'enveloppe extérieure (7) du corps creux est divisée par des produits de tissage (12) en plusieurs chambres (10).
  14. Support pneumatique (1) selon l'une quelconque des revendications 1 à 13, caractérisé en ce que le support (1) présente une forme en arc.
  15. Support pneumatique (1) selon la revendication 14, caractérisé en ce que les extrémités du support (1) en forme d'arc sont reliées par un élément de traction (14) extérieur, non adjacent au corps creux (2).
  16. Utilisation de supports pneumatiques (1) selon l'une quelconque des revendications 1 à 15, en tant qu'éléments supports dans le bâtiment et dans le génie civil.
  17. Utilisation d'au moins deux supports pneumatiques (1) selon l'une quelconque des revendications 1 à 15 en tant que poutre de pont, la structure de voie de circulation (13) étant posée sur les éléments de compression/de traction (5) situés en haut et fixée sur ces derniers.
EP04738025A 2003-07-18 2004-06-24 Support pneumatique Active EP1656483B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04738025T PL1656483T3 (pl) 2003-07-18 2004-06-24 Dźwigar pneumatyczny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH12592003 2003-07-18
PCT/CH2004/000384 WO2005007991A1 (fr) 2003-07-18 2004-06-24 Support pneumatique

Publications (2)

Publication Number Publication Date
EP1656483A1 EP1656483A1 (fr) 2006-05-17
EP1656483B1 true EP1656483B1 (fr) 2008-02-20

Family

ID=34069957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738025A Active EP1656483B1 (fr) 2003-07-18 2004-06-24 Support pneumatique

Country Status (13)

Country Link
US (1) US20060273233A1 (fr)
EP (1) EP1656483B1 (fr)
JP (1) JP4644668B2 (fr)
CN (1) CN100376756C (fr)
AT (1) ATE386856T1 (fr)
AU (2) AU2004257321A1 (fr)
CA (1) CA2531918C (fr)
DE (1) DE502004006268D1 (fr)
ES (1) ES2300782T3 (fr)
HK (1) HK1094461A1 (fr)
PL (1) PL1656483T3 (fr)
WO (1) WO2005007991A1 (fr)
ZA (1) ZA200600516B (fr)

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WO2005021898A1 (fr) 2003-08-27 2005-03-10 Prospective Concepts Ag Structure porteuse en suspension a sustentation aerostatique
EP1694931A1 (fr) * 2003-11-04 2006-08-30 Prospective Concepts AG Structure pneumatique plane
WO2006105787A1 (fr) * 2005-04-02 2006-10-12 Ole Fjord Larsen Console flexible
US8822024B2 (en) 2005-07-15 2014-09-02 Prospective Concepts Ag Method of producing a self-healing membrane
CH704442B1 (de) 2005-12-23 2012-08-15 Prospective Concepts Ag Pneumatisches Bauelement.
WO2007071100A1 (fr) 2005-12-23 2007-06-28 Prospective Concepts Ag Element de construction pneumatique et toit construit a partir de celui-ci
CH705206B1 (de) * 2006-06-23 2012-11-30 Prospective Concepts Ag Pneumatische Tragstruktur.
EP2220312B8 (fr) * 2007-11-19 2012-02-29 Prospective Concepts AG Support pneumatique pliable
US20110114083A1 (en) * 2008-03-28 2011-05-19 Andrea Pedretti Trough collector for a solar power plant
CH698860A1 (de) * 2008-05-07 2009-11-13 Airlight Energy Holding Sa Rinnenkollektor für ein Solarkraftwerk.
CH700461A2 (de) 2009-02-17 2010-08-31 Empa Gekrümmter pneumatischer Träger.
CH702469A1 (de) * 2009-12-17 2011-06-30 Airlight Energy Ip Sa Parabol-Kollektor.
JP5709663B2 (ja) * 2011-06-17 2015-04-30 川崎重工業株式会社 仮設橋の架設方法
JP5730717B2 (ja) * 2011-09-02 2015-06-10 川崎重工業株式会社 仮設橋の架設方法
CH709686A2 (de) 2014-05-22 2015-11-30 Pibridge Ltd Pneumatischer Träger.
CN105821754B (zh) * 2016-05-16 2018-07-27 河南大学 一种frp板和气肋梁组成的轻型折叠桥
CH712565A1 (de) * 2016-06-08 2017-12-15 Pibridge Ltd Pneumatischer Träger.
CH713818A1 (de) 2017-05-16 2018-11-30 Pibridge Ltd Pneumatischer Träger.
RU176041U1 (ru) * 2017-07-24 2017-12-27 Федеральное государственное казенное военное образовательное учреждение высшего образования "ВОЕННАЯ АКАДЕМИЯ МАТЕРИАЛЬНО-ТЕХНИЧЕСКОГО ОБЕСПЕЧЕНИЯ имени генерала армии А.В. Хрулева" Аэромобильный автодорожный мост

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Also Published As

Publication number Publication date
PL1656483T3 (pl) 2008-06-30
AU2010249308A1 (en) 2011-01-06
JP4644668B2 (ja) 2011-03-02
AU2010249308B2 (en) 2011-08-04
HK1094461A1 (en) 2007-03-30
ZA200600516B (en) 2006-12-27
ATE386856T1 (de) 2008-03-15
CN100376756C (zh) 2008-03-26
US20060273233A1 (en) 2006-12-07
CN1823204A (zh) 2006-08-23
CA2531918A1 (fr) 2005-01-27
ES2300782T3 (es) 2008-06-16
EP1656483A1 (fr) 2006-05-17
CA2531918C (fr) 2011-04-26
JP2006528288A (ja) 2006-12-14
WO2005007991A1 (fr) 2005-01-27
DE502004006268D1 (de) 2008-04-03
AU2004257321A1 (en) 2005-01-27

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