EP0490771A1 - Brückenelement zur Überwindung von Hindernissen - Google Patents

Brückenelement zur Überwindung von Hindernissen Download PDF

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Publication number
EP0490771A1
EP0490771A1 EP91403376A EP91403376A EP0490771A1 EP 0490771 A1 EP0490771 A1 EP 0490771A1 EP 91403376 A EP91403376 A EP 91403376A EP 91403376 A EP91403376 A EP 91403376A EP 0490771 A1 EP0490771 A1 EP 0490771A1
Authority
EP
European Patent Office
Prior art keywords
lower face
crossing element
decking
spans
crossing
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.)
Withdrawn
Application number
EP91403376A
Other languages
English (en)
French (fr)
Inventor
Alain Robert Daniel Marc
Jean-Pierre Leroy
Luc Ferriot
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.)
Constructions Mecaniques de Normandie
Original Assignee
Constructions Mecaniques de Normandie
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 Constructions Mecaniques de Normandie filed Critical Constructions Mecaniques de Normandie
Publication of EP0490771A1 publication Critical patent/EP0490771A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D1/00—Bridges in general
    • 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
    • E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/40—Plastics

Definitions

  • the present invention relates to improvements made to crossing elements or span which, alone or in combination of several, allow the crossing of obstacles, such as excavations or watercourses, when they rest at the ends of their faces. lower on two extreme supports.
  • bridge elements or complete bridges made in particular of wood, steel or even light alloys, which are capable of being put in place either by lifting devices (cranes for example), or by a vehicle. transport, specially designed for this purpose (armored vehicle launching deck for example).
  • the object of the invention is essentially to remedy the drawbacks which have just been explained and to propose an improved crossing element, or span, which better meets the various requirements of the practice.
  • the crossing element has a low weight which facilitates its transport and its installation.
  • the low density ( ⁇ 0.5) of the constituent composite material gives the element an intrinsic buoyancy which considerably simplifies the maneuvers in the case of placement above a body of water.
  • the choice of the material constituting the crossing element and the initial curvature given to this element allow an elastic deformation of the element without there being any fear of a creep phenomenon and without, for the nominal load, the item has a negative arrow.
  • the element thus formed has, in itself, sufficient mechanical strength and there is no need to add reinforcements, such as tensioners or cables, which are bulky and unsightly and which also have the disadvantage to reduce the forces in specific locations and not on surfaces.
  • the structure of the crossing element can vary significantly depending on the rated load expected.
  • the element When the element is configured to support a low nominal load, it comprises a single deck and the aforesaid lower face is then the lower face of the deck.
  • the element when configured for a significant nominal load, it comprises a deck and at least one lower reinforcement beam fixed to the deck and then the aforesaid lower surface is the lower face of the beam.
  • the decking and the possible longitudinal member or each of the possible longitudinal members each to consist of spans. juxtaposed in composite material with trapezoidal sections whose inclination of the lateral faces with respect to the normal to the substantially parallel main faces is between 0 and 15 °.
  • a crossing element according to the invention designated as a whole by the reference numeral 1, is self-supporting, monobloc and rests at its ends on supports 2.
  • Contact shoes 3 may possibly be provided at the ends to serve as contacts with the supports 2.
  • the crossing element 1 is made up of a number of prefabricated sub-assemblies (for example decking, side members, etc.) which are individually made of composite material, then assembled at the same time as their adjuncts various accessories or reinforcements.
  • prefabricated sub-assemblies for example decking, side members, etc.
  • each of them can be advantageously manufactured by implementing the method described and claimed in the patent application.
  • individual spans 9 are prepared (optionally each formed by placing short loaves end to end) in a foam material such as polyurethane, polyvinyl chloride, polyethylene, polypropylene, epoxy, etc.
  • a foam material such as polyurethane, polyvinyl chloride, polyethylene, polypropylene, epoxy, etc.
  • Each span has a length corresponding to the length provided for the crossing element and has a section in the form of an isosceles trapezoid with an angle a of inclination of the side walls compared to normal to the base walls which is between 0 and 15 ° and which is chosen according to the nominal loads expected.
  • the spans or the rolls of cellular material have a density between 60 and 120 kg / m3 and are either machined or molded in situ.
  • spans with a honeycomb structure of the honeycomb type, for example metallic.
  • the safety rails 5 are attached laterally to the decking 4 and / or to the beam 6 to which they are bonded.
  • transverse stability reinforcements 16 and 17, made of glass or carbon embedded in an organic matrix in order to punctually support the crash barriers and to brace the side members, and therefore to constitute a mechanically resistant trellis.
  • underside of the crossing element is meant either the underside of the decking when the latter alone constitutes (without spars) the crossing element, or the underside of the spar (s) when these are present (case shown in the drawings).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
EP91403376A 1990-12-13 1991-12-12 Brückenelement zur Überwindung von Hindernissen Withdrawn EP0490771A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015616A FR2670517B1 (fr) 1990-12-13 1990-12-13 Element de franchissement pour le franchissement d'obstacles.
FR9015616 1990-12-13

Publications (1)

Publication Number Publication Date
EP0490771A1 true EP0490771A1 (de) 1992-06-17

Family

ID=9403197

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91403376A Withdrawn EP0490771A1 (de) 1990-12-13 1991-12-12 Brückenelement zur Überwindung von Hindernissen

Country Status (2)

Country Link
EP (1) EP0490771A1 (de)
FR (1) FR2670517B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041692A1 (en) * 1997-03-19 1998-09-24 Georgian Politechnical Intellect Modular bridge and its constructing method
EP1101871A1 (de) * 1999-11-19 2001-05-23 Societe Civile De Brevets Matiere Brückenoberbau aus Stahl und Verfahren zur Herstellung einer diesen Oberbau enthaltenden Brücke
US7442711B2 (en) 2002-05-17 2008-10-28 Othera Holding, Inc. Amelioration of the development of cataracts and other ophthalmic diseases
US7825134B2 (en) 2003-05-19 2010-11-02 Othera Holding, Inc. Amelioration of cataracts, macular degeneration and other ophthalmic diseases
GB2533817A (en) * 2015-01-05 2016-07-06 Bae Systems Plc Mobile bridge module
US10190936B2 (en) 2015-01-05 2019-01-29 Bae Systems Plc Mobile bridge apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2285492A1 (fr) * 1974-09-20 1976-04-16 Robatel Slpi Perfectionnements aux passerelles pour pietons et structures analogues
US4079476A (en) * 1977-07-11 1978-03-21 Composite Technology, Inc. Fiberglass footbridge
US4200946A (en) * 1978-11-16 1980-05-06 Westland Aircraft Limited Load-supporting structures
EP0113650A1 (de) * 1982-12-03 1984-07-18 Preflex S.A. Verfahren zur Herstellung eines Trägers mit einer vorgebogenen oder vorgespannten und/oder zugleich vorgebogenen und vorgespannten starren Armierung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2285492A1 (fr) * 1974-09-20 1976-04-16 Robatel Slpi Perfectionnements aux passerelles pour pietons et structures analogues
US4079476A (en) * 1977-07-11 1978-03-21 Composite Technology, Inc. Fiberglass footbridge
US4200946A (en) * 1978-11-16 1980-05-06 Westland Aircraft Limited Load-supporting structures
EP0113650A1 (de) * 1982-12-03 1984-07-18 Preflex S.A. Verfahren zur Herstellung eines Trägers mit einer vorgebogenen oder vorgespannten und/oder zugleich vorgebogenen und vorgespannten starren Armierung

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998041692A1 (en) * 1997-03-19 1998-09-24 Georgian Politechnical Intellect Modular bridge and its constructing method
EP1101871A1 (de) * 1999-11-19 2001-05-23 Societe Civile De Brevets Matiere Brückenoberbau aus Stahl und Verfahren zur Herstellung einer diesen Oberbau enthaltenden Brücke
FR2801328A1 (fr) * 1999-11-19 2001-05-25 Soc Civ D Brevets Matiere Tablier de pont metallique et procede de construction d'un pont comportant un tel tablier
US6574818B1 (en) 1999-11-19 2003-06-10 Societe Civile De Brevets Matiere Provisional bridge of prefabricated elements
CZ301753B6 (cs) * 1999-11-19 2010-06-16 Societe Civile De Brevets Matiere Mostovka pro kovové mosty a zpusob výstavby mostu s touto mostovkou
US7442711B2 (en) 2002-05-17 2008-10-28 Othera Holding, Inc. Amelioration of the development of cataracts and other ophthalmic diseases
US8383648B2 (en) 2002-05-17 2013-02-26 Colby Pharmaceutical Company Amelioration of the development of cataracts and other ophthalmic diseases
US7825134B2 (en) 2003-05-19 2010-11-02 Othera Holding, Inc. Amelioration of cataracts, macular degeneration and other ophthalmic diseases
GB2533817A (en) * 2015-01-05 2016-07-06 Bae Systems Plc Mobile bridge module
WO2016110681A1 (en) * 2015-01-05 2016-07-14 Bae Systems Plc Mobile bridge module
US10190936B2 (en) 2015-01-05 2019-01-29 Bae Systems Plc Mobile bridge apparatus
US10202729B2 (en) 2015-01-05 2019-02-12 Bae Systems Plc Mobile bridge module

Also Published As

Publication number Publication date
FR2670517B1 (fr) 1993-04-09
FR2670517A1 (fr) 1992-06-19

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