EP1398415B1 - Dismountable bridge - Google Patents

Dismountable bridge Download PDF

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Publication number
EP1398415B1
EP1398415B1 EP03015413A EP03015413A EP1398415B1 EP 1398415 B1 EP1398415 B1 EP 1398415B1 EP 03015413 A EP03015413 A EP 03015413A EP 03015413 A EP03015413 A EP 03015413A EP 1398415 B1 EP1398415 B1 EP 1398415B1
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EP
European Patent Office
Prior art keywords
track
carriers
bridge
truss
track carrier
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Expired - Lifetime
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EP03015413A
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German (de)
French (fr)
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EP1398415A2 (en
EP1398415A3 (en
Inventor
Reinhold Füssinger
Walter Steppacher
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Airbus Defence and Space GmbH
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EADS Deutschland GmbH
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Publication of EP1398415A2 publication Critical patent/EP1398415A2/en
Publication of EP1398415A3 publication Critical patent/EP1398415A3/en
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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
    • 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
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/12—Portable or sectional bridges
    • E01D15/124—Folding or telescopic bridges; Bridges built up from folding or telescopic sections

Definitions

  • the invention relates to a collapsible bridge, i. a transportable bridge for mobile use.
  • the track carrier are connected by means of cross-beams frictionally.
  • a cross member forms a part of the lower belt.
  • aligned in the longitudinal direction of the bridge roadway planks are connected non-positively with the cross members.
  • the track carriers each comprise two truss levels of diagonal struts, lower and upper girth. This the track carrier forming items are each connected to each other by means of releasable connections.
  • the DE 2 250 013 A1 describes a transportable bridge whose track carriers have a triangular cross-section. At each triangle point there is a belt profile.
  • the two base sides of the track carrier each consist of a so-called Vierendeel carrier. It is a frame-like support structure with additional diagonal braces.
  • the track carriers can not be changed in their geometry.
  • the cross members connected to the track carriers have collided with the track carriers.
  • the EP 0 600 321 A1 describes a verlegbare bridge, the track carrier are designed as truss girders with trapezoidal cross-section. At each corner point of the trapezoidal cross-section, a belt profile is present, so that each track carrier comprises two upper belts and two lower belts. The two upper straps are held together by means of buckles.
  • the two track carriers are frictionally connected by cross members, wherein the cross member completely through the Spur carrier inserted and frictionally connected with these.
  • the cross members are located at the joint and in the middle of each bridge section at locations where no truss node is present. In the longitudinal direction of the bridge aligned roadway planks are positively connected to the cross members.
  • the dimensions, in particular the height of the bending beam of the supporting structure must be as high as possible and the materials used as light as possible, firm and stiff.
  • the described construction of the track carrier creates the prerequisite for a simple folding of the track carrier.
  • the volume of the track carrier is significantly reduced by the folding of the two truss levels for transport.
  • the static interconnection of each of the two truss levels is not resolved when collapsing.
  • the static composite of the two truss levels is realized by optimal solutions inseparable connections. There are therefore no loose fasteners that could easily be lost in the field in the rain, ice and snow and in the dark.
  • the preparation of the necessary for the application unfolded shape of the track carrier from the required for transport volume-saving folded form is possible with minimal expenditure of time without any tools.
  • the cross beams and the roadway planks are not primary structures, i. Their failure does not necessarily trigger the failure of the bridge as a whole.
  • Crossbeams, roadway boards and ramps can also be exchanged when the bridge is already built.
  • the track carriers are coupled together in the bridge longitudinal direction from one or more track carrier sections.
  • the track carriers are terminated at their ends with end pieces. These can simultaneously serve as supports of the bridge.
  • Typical spans of the bridge according to the invention are in the range up to about 30 m.
  • Fig. 1 shows the execution of a bridge B according to the invention in several views. It comprises two track carriers 3, which are designed as truss girders with triangular cross-section.
  • the track carriers 3 are coupled together in this embodiment of three track carrier sections 31 along the bridge longitudinal direction and terminated at their ends with end pieces E.
  • the end pieces E are coupled to the outer bridge section and form defined supports of the bridge.
  • the coupling together of the individual track carrier sections 31 is advantageously carried out on the top flange O and the two bottom straps U, which may be formed at their ends as eye rod connections.
  • the coupling points between the individual track carrier sections 31 are denoted by 11.
  • a track carrier 3 has two truss levels, which is spanned in each case between the upper triangle point and one of the two lower triangular points. Down the track carrier 3 is open. However, between the two lower straps for further Austeifung additional demountable diagonal bars are used as a wind band
  • truss node K The places where the diagonal struts D of the truss meet on lower or upper chord U, O are referred to as truss node K.
  • the truss corresponds to the framework definition according to Cremona.
  • Such a framework can be optimally designed for low weight and rigid.
  • the track carrier 3 are connected by cross members 5.
  • the cross member 5 are located on the lower node K of the two truss levels of the track carrier 3 and are connected to these non-positively.
  • the cross member 5 are completely inserted through the track carrier 3, so that they fix the distance between the two truss levels at the bottom of the track carrier 3 and the two track carrier 3 to each other.
  • the cross member 5 are on the base side of the triangle, which is formed by the diagonal struts D and the Gurtprofile O, U, on.
  • the attachment of the cross member 5 to the track carriers 3 is used only to fix the unfolded truss levels and the track carrier with each other, but not the transmission of the derived from the cross member in the track carrier traffic loads.
  • the cross members 5 are - aligned in the bridge span direction - so-called pavements 7, which carry the traffic loads and the cross member 5 settle.
  • the roadway planks 7 represent the roadway of the bridge. They are frictionally connected to the cross members 5.
  • Cross beams 5 and pavements 7 may advantageously consist of tubular composite fiber profiles, e.g. can be produced inexpensively by extrusion.
  • the two truss levels of a track carrier 3 are connected at the upper triangle point by a hinge S ( Fig. 3 ).
  • Each truss level carries half a top flange OH.
  • the individual parts forming them (diagonal struts D, belt profiles O, U) are connected to each other by means of permanent connection means.
  • the lower straps U of a track carrier 3 in the unfolded state are aligned in the direction of the associated truss plane, ie a longitudinal side of the lower belt U (the longer side of the rectangular lower belt) lies parallel to the truss plane.
  • a lower flange U is vertically aligned in the unfolded state, ie a longitudinal side of the lower chord (the longer side of the rectangular lower chord) is vertical.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Window Of Vehicle (AREA)
  • Paper (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Valve Device For Special Equipments (AREA)
  • Stringed Musical Instruments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Road Paving Structures (AREA)

Abstract

The transportable bridge has two track carriers (3) as frames with a triangular cross section with a girder profile (O,U) at each corner of the triangle. Two triangle points are at the same level with the third point above them, and with diagonal struts (D). The triangular frame structures are bonded together (K) at the upper and lower girders. The lateral track carriers (5) are locked together in a force fit and lie on the frame bonding points, locked to them in a force fit. The track planks (7) lie along the bridge length, locked to the lateral carriers with a force fit. The lateral carriers are pushed wholly through the track carriers, and are locked to them in a force fit, so that the gaps are fixed between the two frame planes at the under side of a track carrier and also the two track carriers. The lateral carriers and the track planks are formed by extruded tubular profiles of compound fiber materials.

Description

Die Erfindung betrifft eine zerlegbare Brücke, d.h. eine transportable Brücke für den mobilen Einsatz.The invention relates to a collapsible bridge, i. a transportable bridge for mobile use.

Aus der DE 195 10 582 A1 ist eine transportable Brücke bekannt, deren Spurträger mittels Querträgern kraftschlüssig verbunden sind. Ein Querträger bildet dabei einen Teil des Untergurts. Darüber hinaus sind in Brückenlängsrichtung ausgerichtete Fahrbahnbohlen vorhanden, die mit den Querträgern kraftschlüssig verbunden sind. Die Spurträger umfassen jeweils zwei Fachwerkebenen aus Diagonalstreben, Unter- und Obergurt. Diese den Spurträger bildenden Einzelteile sind jeweils mittels wieder lösbaren Verbindungen miteinander verbunden.From the DE 195 10 582 A1 is a transportable bridge known, the track carrier are connected by means of cross-beams frictionally. A cross member forms a part of the lower belt. In addition, aligned in the longitudinal direction of the bridge roadway planks are connected non-positively with the cross members. The track carriers each comprise two truss levels of diagonal struts, lower and upper girth. This the track carrier forming items are each connected to each other by means of releasable connections.

Die DE 2 250 013 A1 beschreibt eine transportable Brücke, deren Spurträger einen dreieckigen Querschnitt aufweisen. An jedem Dreieckspunkt ist ein Gurtprofil vorhanden. Die beiden Basisseiten der Spurträger bestehen aus jeweils einem so genannten Vierendeelträger. Dabei handelt es sich um eine rahmenartig ausgebildete Tragstruktur mit zusätzlichen Diagonalstreben. Die Spurträger können in ihrer Geometrie nicht verändert werden. Die mit den Spurträgern verbundenen Querträger sind an den Spurträgern gestoßen.The DE 2 250 013 A1 describes a transportable bridge whose track carriers have a triangular cross-section. At each triangle point there is a belt profile. The two base sides of the track carrier each consist of a so-called Vierendeel carrier. It is a frame-like support structure with additional diagonal braces. The track carriers can not be changed in their geometry. The cross members connected to the track carriers have collided with the track carriers.

Die EP 0 600 321 A1 beschreibt eine verlegbare Brücke, deren Spurträger als Fachwerkträger mit trapezförmigen Querschnitt ausgebildet sind. An jedem Eckpunkt des trapezförmigen Querschnitts ist ein Gurtprofil vorhanden, so dass jeder Spurträger zwei Obergurte und zwei Untergurte umfasst. Die beiden Obergurte werden mittels Schnallenanordnung zusammengehalten. Die beiden Spurträger sind durch Querträger kraftschlüssig verbunden, wobei die Querträger vollständig durch die Spurträger hindurchgesteckt und kraftschlüssig mit diesen verbunden sind. Die Querträger befinden sich dabei am Stoß und in der Mitte eines jeden Brückenabschnitts an Stellen, an denen kein Fachwerkknoten vorhanden ist. In Brückenlängsrichtung ausgerichtete Fahrbahnbohlen sind mit den Querträgern kraftschlüssig verbunden.The EP 0 600 321 A1 describes a verlegbare bridge, the track carrier are designed as truss girders with trapezoidal cross-section. At each corner point of the trapezoidal cross-section, a belt profile is present, so that each track carrier comprises two upper belts and two lower belts. The two upper straps are held together by means of buckles. The two track carriers are frictionally connected by cross members, wherein the cross member completely through the Spur carrier inserted and frictionally connected with these. The cross members are located at the joint and in the middle of each bridge section at locations where no truss node is present. In the longitudinal direction of the bridge aligned roadway planks are positively connected to the cross members.

Transportable Brücke müssen mit möglichst geringem Aufwand konstengünstig transportiert werden. Hierfür sind zwei Eigenschaften besonders wichtig:

  1. 1. geringer Transportraumbedarf,
  2. 2. geringes Gewicht.
Transportable bridge must be transported cheapest possible cost. Two features are especially important for this:
  1. 1. low transport space requirement,
  2. 2. low weight.

Dies gilt insbesondere dann, wenn die Brücken über große Entfernungen als Luftfracht transportiert werden müssenThis is especially true when the bridges have to be transported over long distances as air freight

Um leichte Brückenstrukturen zu realisieren, müssen die Abmessungen, vor allem die Höhe der Biegeträger der tragenden Konstruktion, möglichst hoch und die verwendeten Werkstoffe möglichst leicht, fest und steif sein.In order to realize lightweight bridge structures, the dimensions, in particular the height of the bending beam of the supporting structure, must be as high as possible and the materials used as light as possible, firm and stiff.

Um Brückenstrukturen mit möglichst geringem Transportraumbedarf zu realisieren, müssen die Bauteile möglichst klein und vor allem gut stapelbar sein.In order to realize bridge structures with the lowest possible transport space requirement, the components must be as small as possible and above all well stackable.

Hier liegt ein Zielkonflikt vor, der durch die vorliegende Erfindung gelöst werden soll.Here is a conflict of objectives, which is to be solved by the present invention.

Aufgabe der Erfindung ist es somit, eine Brücke zu schaffen, die es ermöglicht, dass

  • die tragenden Biegeträger möglichst hoch gewählt werden können,
  • der Einsatz von leichten, festen und steifen Werkstoffen, insbesondere Faserwerkstoffen, effektiv erfolgen kann,
  • sie mit möglichst geringem Platzbedarf transportiert werden kann
  • sie schnell auf- und rückgebaut werden kann.
The object of the invention is therefore to provide a bridge that allows that
  • the load-bearing bending beams can be chosen as high as possible,
  • the use of lightweight, strong and rigid materials, in particular fiber materials, can be carried out effectively,
  • It can be transported with the least possible space
  • It can be quickly assembled and dismantled.

Diese Aufgabe wird mit der Brücke nach Patentanspruch 1. gelöst. Vorteilhafte Ausgestaltungen der Brücke sind Gegenstand von Unteransprüchen.This object is achieved with the bridge according to claim 1. Advantageous embodiments of the bridge are the subject of dependent claims.

Die erfindungsgemäße Brücke ist folgendermaßen konstruiert:

  • sie umfasst zwei Spurträger, die als Fachwerkträger mit dreieckigem Querschnitt ausgebildet sind, wobei zwei Ecken des dreieckigen Querschnitts auf gleicher Höhe liegen, und die dritte Ecke hierzu oberhalb liegt, wobei jeweils zwischen einem der unteren Dreieckspunkte und dem oberen Dreieckspunkt des Spurträgerquerschnitts eine Fachwerkebene aus Diagonalstreben, Unter- und Obergurt gebildet ist, wobei an den Stellen der Verbindung von zwei Diagonalstreben und einem Untergurt bzw. Obergurt untere bzw. obere Fachwerknoten gebildet sind,
  • die beiden Spurträger sind durch Querträger kraftschlüssig verbunden,
  • es sind in Brückenlängsrichtung ausgerichtete Fahrbahnbohlen vorhanden, die mit den Querträgern kraftschlüssig verbunden sind,
  • die Querträger sind vollständig durch die Spurträger hindurchgesteckt und kraftschlüssig mit diesen verbunden, so dass die Querträger den Abstand der beiden Fachwerkebenen an der Unterseite eines Spurträgers sowie die Spurträger untereinander fixieren. Dabei liegen die Querträger auf den unteren Knoten der beiden Fachwerkebenen eines Spurträgers auf und sind mit diesen kraftschlüssig verbunden.
  • die beiden Fachwerkebenen eines Spurträgers sind am oberen Dreieckspunkt des Spurträgerquerschnitts mit einem Scharnier verbunden, so dass die Spurträger bei zurück gebauter Brücke zusammengeklappt werden können.
The bridge according to the invention is constructed as follows:
  • it comprises two track carriers, which are designed as truss girders with triangular cross-section, with two corners of the triangular cross-section lying at the same height, and the third corner is above it, wherein each between one of the lower triangular points and the upper triangle point of the track carrier cross section a truss plane diagonal struts , Lower and upper strap is formed, wherein at the locations of the connection of two diagonal struts and a lower chord or upper chord lower or upper trumpet notes are formed,
  • the two track carriers are frictionally connected by crossbeams,
  • there are aligned in the longitudinal direction of the bridge roadway planks, which are positively connected to the cross members,
  • the cross members are completely inserted through the track carrier and positively connected thereto, so that the cross member fix the distance between the two truss levels at the bottom of a track carrier and the track carrier with each other. In this case, the cross member are on the lower node of the two truss levels of a track carrier and are connected to these frictionally.
  • The two truss levels of a track carrier are connected at the upper triangular point of the track carrier cross section with a hinge, so that the track carrier can be folded when the bridge is back.

Eine derart konstruierte Brücke weist folgende Vorteile auf:Such a constructed bridge has the following advantages:

Durch die Aufgliederung der Brücke in einzelne, überwiegend flache und gut stapelbare Elemente benötigt sie wenig Transportraum.The breakdown of the bridge into individual, mostly flat and well stackable elements requires little transport space.

Durch die Aufgliederung der Brücke in einzelne überwiegend ein- oder zweidimensional beanspruchte Elemente sind die Voraussetzungen für den Einsatz von Faserverbundwerkstoffen gegeben und somit geringe Gewichte möglich.The breakdown of the bridge into individual predominantly one- or two-dimensionally stressed elements, the conditions for the use of fiber composites are given and thus low weights possible.

Der beschriebene Aufbau der Spurträger schafft die Voraussetzung für ein einfaches Zusammenklappen der Spurträger. Das Volumen der Spurträger wird durch das Zusammenklappen der beiden Fachwerkebenen für den Transport erheblich vermindert. Der statische Verbund jeder der beiden Fachwerkebenen wird beim Zusammenklappen nicht aufgelöst. Der statische Verbund der beiden Fachwerkebenen ist durch unlösbare Verbindungen gewichtsoptimal realisiert. Es gibt somit keine losen Verbindungselemente, die im Gelände bei Regen, Eis und Schnee sowie bei Dunkelheit leicht verloren gehen könnten. Die Herstellung der für den Einsatz erforderlichen aufgeklappten Form des Spurträgers aus der für den Transport erforderlichen volumensparenden zusammengeklappten Form ist mit minimalem Zeitaufwand ohne jedes Hilfsmittel möglich.The described construction of the track carrier creates the prerequisite for a simple folding of the track carrier. The volume of the track carrier is significantly reduced by the folding of the two truss levels for transport. The static interconnection of each of the two truss levels is not resolved when collapsing. The static composite of the two truss levels is realized by optimal solutions inseparable connections. There are therefore no loose fasteners that could easily be lost in the field in the rain, ice and snow and in the dark. The preparation of the necessary for the application unfolded shape of the track carrier from the required for transport volume-saving folded form is possible with minimal expenditure of time without any tools.

Die Querträger und die Fahrbahnbohlen sind keine Primärsturkturen, d.h. ihr Versagen löst nicht zwangsläufig das Versagen der Brücke als Ganzes aus.The cross beams and the roadway planks are not primary structures, i. Their failure does not necessarily trigger the failure of the bridge as a whole.

Querträger, Fahrbahnbohlen und Auffahrhilfen können auch bei bereits gebauter Brücke ausgetauscht werden.Crossbeams, roadway boards and ramps can also be exchanged when the bridge is already built.

Durch das niedrige Gewicht der Brücke benötigt sie beim Verlegen entsprechend geringes Gegengewicht.Due to the low weight of the bridge, it requires a correspondingly low counterweight when laying.

Vorteilhaft sind die Spurträger in Brückenlängsrichtung aus einem oder mehreren Spurträgerabschnitten zusammengekuppelt. Die Spurträger sind an ihren Enden mit Endstücken abgeschlossen. Diese können gleichzeitig als Auflager der Brücke dienen.Advantageously, the track carriers are coupled together in the bridge longitudinal direction from one or more track carrier sections. The track carriers are terminated at their ends with end pieces. These can simultaneously serve as supports of the bridge.

Typische Spannweiten der erfindungsgemäßen Brücke liegen im Bereich bis ca. 30 m.Typical spans of the bridge according to the invention are in the range up to about 30 m.

Die Erfindung wird anhand von Ausführungsbeispielen unter Bezugnahme von Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine erfindungsgemäße Brücke aus mehreren Brückenabschnitten in Seitenansicht sowie in Schnittdarstellung (Schnitt quer zur Brückenlängsrichtung);
Fig. 2
die Ausführung einer erfindungsgemäßen Brücke mit gekröpftem Querträger in Schnittdarstellung.
Fig. 3
einen klappbaren Spurträgerabschnitt gemäß einer weiteren Ausführung der Erfindung in Seitenansicht, Draufsicht sowie in Schnittdarstellung (im ausgeklappten sowie im eingeklappten Zustand);
Fig. 4
eine weitere Ausführung eines klappbaren Spurträgers in Schnittdarstellung im ausgeklappten sowie im eingeklappten Zustand.
The invention will be explained in more detail by means of embodiments with reference to drawings. Show it:
Fig. 1
a bridge according to the invention of several bridge sections in side view and in a sectional view (section transverse to the bridge longitudinal direction);
Fig. 2
the execution of a bridge according to the invention with cranked cross member in a sectional view.
Fig. 3
a foldable track carrier section according to a further embodiment of the invention in side view, plan view and in sectional view (in the unfolded as well as in the folded state);
Fig. 4
another embodiment of a folding track carrier in a sectional view in the unfolded as well as in the folded state.

Fig. 1 zeigt die Ausführung einer erfindungsgemäßen Brücke B in mehreren Ansichten. Sie umfasst zwei Spurträger 3, die als Fachwerkträger mit dreieckigem Querschnitt ausgebildet sind. Die Spurträger 3 sind in dieser Ausführung aus drei Spurträgerabschnitten 31 entlang der Brückenlängsrichtung zusammengekuppelt und an ihren Enden mit Endstücken E abgeschlossen. Die Endstücke E sind an den äußeren Brückenabschnitt angekuppelt und bilden definierte Auflager der Brücke. Fig. 1 shows the execution of a bridge B according to the invention in several views. It comprises two track carriers 3, which are designed as truss girders with triangular cross-section. The track carriers 3 are coupled together in this embodiment of three track carrier sections 31 along the bridge longitudinal direction and terminated at their ends with end pieces E. The end pieces E are coupled to the outer bridge section and form defined supports of the bridge.

Zwischen den Endstücken E der Spurträger 3 sind Auffahrhilfen AF angeordnet, die den Höhenunterschied zwischen dem Ufer und der Oberkante der Brückenfahrbahn überbrücken.Between the end pieces E of the track carrier 3 Auffahrhilfen AF are arranged to bridge the difference in height between the shore and the upper edge of the bridge carriageway.

An jedem Dreieckspunkt im Querschnitt der Spurträger 3 sind Gurtprofile O,U angeordnet, wobei die beiden unteren, auf gleicher Höhe befindlichen Gurtprofile U Untergurte bilden, und das am oberen Dreieckspunkt befindliche Gurtprofil O den Obergurt bildet.At each triangle point in the cross section of the track carrier 3 Gurtprofile O, U are arranged, the two lower, located at the same height Gurtprofile U form lower chords, and located at the upper triangle point Gurtprofil O forms the upper flange.

Das Zusammenkuppeln der einzelnen Spurträgerabschnitte 31 erfolgt vorteilhaft an Obergurt O und den beiden Untergurten U, die dazu an ihren Enden als Augenstabverbindungen ausgebildet sein können. Die Koppelstellen zwischen den einzelnen Spurträgerabschnitten 31 sind mit 11 bezeichnet.The coupling together of the individual track carrier sections 31 is advantageously carried out on the top flange O and the two bottom straps U, which may be formed at their ends as eye rod connections. The coupling points between the individual track carrier sections 31 are denoted by 11.

Ein Spurträger 3 weist zwei Fachwerkebenen auf, die jeweils zwischen oberem Dreieckspunkt und einem der beiden unteren Dreieckspunkte aufgespannt ist. Nach unten hin ist der Spurträger 3 offen. Jedoch können zwischen den beiden Untergurten zur weiteren Austeifung zusätzliche demontierbare Diagonalstäbe als Windverband eingesetzt werdenA track carrier 3 has two truss levels, which is spanned in each case between the upper triangle point and one of the two lower triangular points. Down the track carrier 3 is open. However, between the two lower straps for further Austeifung additional demountable diagonal bars are used as a wind band

Die Stellen, an denen die Diagonalstreben D des Fachwerks auf Unter- oder Obergurt U,O treffen, werden als Fachwerkknoten K bezeichnet.The places where the diagonal struts D of the truss meet on lower or upper chord U, O are referred to as truss node K.

Das Fachwerk entspricht der Fachwerkdefinition nach Cremona. Letzteres ist definiert durch die Bedingung s = 2 * n - 3 mit s = Anzahl der Stäbe und n = Anzahl der Knoten. Ein solches Fachwerk kann optimal gewichtsgünstig und biegesteif ausgelegt werden.The truss corresponds to the framework definition according to Cremona. The latter is defined by the condition s = 2 * n - 3 with s = number of rods and n = number of nodes. Such a framework can be optimally designed for low weight and rigid.

Die Spurträger 3 sind durch Querträger 5 verbunden. Die Querträger 5 liegen auf den unteren Knoten K der beiden Fachwerkebenen der Spurträger 3 auf und sind mit diesen kraftschlüssig verbunden. Die Querträger 5 sind vollständig durch die Spurträger 3 hindurchgesteckt, so dass sie den Abstand zwischen den beiden Fachwerkebenenen an der Unterseite des Spurträgers 3 und die beiden Spurträger 3 zueinander fixieren.The track carrier 3 are connected by cross members 5. The cross member 5 are located on the lower node K of the two truss levels of the track carrier 3 and are connected to these non-positively. The cross member 5 are completely inserted through the track carrier 3, so that they fix the distance between the two truss levels at the bottom of the track carrier 3 and the two track carrier 3 to each other.

Die Querträger 5 liegen auf der Basisseite des Dreiecks, das durch die Diagonalstreben D und die Gurtprofile O,U gebildet wird, auf. Dadurch werden die Kräfte, die der Querträger 5 in die Spurträger 3 ableitet, direkt und formschlüssig in die Diagonalen D eingeleitet, ohne den Untergurt U durch Kräfte quer zu seiner Hauptbeanspruchungsrichtung zu belasten. Die Befestigung des Querträgers 5 an den Spurträgern 3 dient lediglich der Fixierung der ausgeklappten Fachwerkebenen und der Spurträger untereinander, nicht jedoch der Übertragung der durch die Querträger in die Spurträger abzuleitenden Verkehrslasten.The cross member 5 are on the base side of the triangle, which is formed by the diagonal struts D and the Gurtprofile O, U, on. As a result, the forces that derives the cross member 5 in the track carrier 3, directly and positively introduced into the diagonal D without burdening the lower flange U by forces transverse to its main direction of stress. The attachment of the cross member 5 to the track carriers 3 is used only to fix the unfolded truss levels and the track carrier with each other, but not the transmission of the derived from the cross member in the track carrier traffic loads.

In der Ausführung nach Fig. 2 sind die Querträger 5 im Bereich des Übergangs von der Fahrbahn in die Spurträger 3 gekröpft, so dass die Querträger im Fahrbahnbereich tiefer liegen als innerhalb eines Spurträgers.In the execution after Fig. 2 the cross member 5 are cranked in the region of the transition from the road to the track carrier 3, so that the cross member in the road area are deeper than inside a track carrier.

Auf den Querträgern 5 liegen - in Brückenspannweitenrichtung ausgerichtet - sogenannte Fahrbahnbohlen 7, die die Verkehrslasten tragen und auf die Querträger 5 absetzen. Die Fahrbahnbohlen 7 stellen die Fahrbahn der Brücke dar. Sie sind mit den Querträgern 5 kraftschlüssig verbunden.On the cross members 5 are - aligned in the bridge span direction - so-called pavements 7, which carry the traffic loads and the cross member 5 settle. The roadway planks 7 represent the roadway of the bridge. They are frictionally connected to the cross members 5.

Querträger 5 und Fahrbahnbohlen 7 können vorteilhaft aus rohrförmigen Faserverbundprofilen bestehen, die z.B. durch Extrudieren kostengünstig hergestellt werden können.Cross beams 5 and pavements 7 may advantageously consist of tubular composite fiber profiles, e.g. can be produced inexpensively by extrusion.

Die beiden Fachwerkebenen eines Spurträgers 3 sind am oberen Dreieckspunkt durch eine Scharnier S verbunden (Fig. 3). Dabei bringt jede Fachwerkebene einen halben Obergurt OH mit. Innerhalb einer Fachwerkebene sind die sie bildenden Einzelteile (Diagonalstreben D, Gurtprofile O,U) durch unlösbare Verbindungsmittel miteinander verbunden.The two truss levels of a track carrier 3 are connected at the upper triangle point by a hinge S ( Fig. 3 ). Each truss level carries half a top flange OH. Within a truss level, the individual parts forming them (diagonal struts D, belt profiles O, U) are connected to each other by means of permanent connection means.

Durch die beschriebene Möglichkeit des Zusammenklappens des Spurträgers benötigen diese auch bei großer Bauhöhe nur einen vergleichsweise kleinem Stauraum. Die Herstellung der aufgeklappten Form aus der für den Transport notwendigen zusammengeklappten Form des Spurträgers ist schnell und ohne Hilfsmittel möglich.Due to the described possibility of folding the track carrier, they require only a comparatively small amount of storage space even at high heights. The production of the unfolded form of the necessary for transport folded form of the track carrier is possible quickly and without tools.

In der in Fig. 3 gezeigten Ausführung sind die Untergurte U eines Spurträgers 3 im aufgeklappten Zustand in Richtung der zugehörigen Fachwerkebene ausgerichtet, d.h. eine Längsseite des Untergurts U (die längere Seite des rechteckigen Untergurts) liegt parallel zur Fachwerkebene.In the in Fig. 3 In the embodiment shown, the lower straps U of a track carrier 3 in the unfolded state are aligned in the direction of the associated truss plane, ie a longitudinal side of the lower belt U (the longer side of the rectangular lower belt) lies parallel to the truss plane.

Eine Alternative hierzu ist in der Fig. 4 dargestellt. Dabei ist ein Untergurt U im aufgeklappten Zustand senkrecht ausgerichtet, d.h. eine Längsseite des Untergurts (die längere Seite des rechteckigen Untergurts) liegt senkrecht.An alternative to this is in the Fig. 4 shown. In this case, a lower flange U is vertically aligned in the unfolded state, ie a longitudinal side of the lower chord (the longer side of the rectangular lower chord) is vertical.

Claims (7)

  1. Dismountable bridge
    - comprising two track carriers (3) which are designed as truss girders, wherein truss planes are formed from diagonal struts, lower chord and upper chord, and wherein lower or upper truss nodes (K) are formed at the points of connection of two diagonal struts (D) and a lower chord (U) or upper chord (O),
    - the two track carriers (3) are connected in a force-fitting manner by means of transoms (5),
    - the transoms (5) are plugged completely through the track carriers (3) and connected thereto in a force-fitting manner, with the result that the transoms (5) fix the distance between the truss planes at the lower side of a track carrier (3) and also the two track carriers (3) with respect to one another,
    - roadway planks (7) which are oriented in the longitudinal direction of the bridge and which are connected in a force-fitting manner to the transoms (5) are present,
    characterized in that
    - the cross section of a truss girder is designed to be triangular, wherein exactly one chord profile (O, U) is present at each triangle point, and wherein two corners of the triangular cross section are situated at the same level, and the third corner is situated above this level, wherein a truss plane composed of diagonal struts (D), lower chord (U) and upper chord (O) is formed in each case between one of the lower triangle points and the upper triangle point, and the two truss planes of a track carrier (3) are provided at the upper triangle point of the track carrier cross section with a hinge (S) having a common hinge axis (X) about which the track carriers (3) can be folded up when the bridge is dismantled,
    - wherein the transoms (5) rest on the lower nodes (K) of the two truss planes of a track carrier (3) and are connected in a force-fitting manner to these nodes.
  2. Dismountable bridge according to Claim 1, characterized in that a longitudinal side of a lower chord (U) situated at the lower triangle points of a track carrier (3) is oriented parallel to the associated truss plane.
  3. Dismountable bridge according to Claim 1, characterized in that a longitudinal side of a lower chord situated at the lower triangle points of a track carrier (3) is oriented vertically.
  4. Dismountable bridge according to one of the preceding claims, characterized in that the transoms (5) and/or the roadway planks (7) are composed of extruded, tubular fibre composite profiles.
  5. Dismountable bridge according to one of the preceding claims, characterized in that the transoms (5) are bent off at the transition region to the track carriers (3).
  6. Dismountable bridge according to one of the preceding claims, characterized in that the track carriers (3) are coupled together in the longitudinal direction of the bridge from one or more track carrier sections (31).
  7. Dismountable bridge according to one of the preceding claims, characterized in that the track carriers are coupled at their ends with end pieces (E) which form the bearings of the bridge.
EP03015413A 2002-09-14 2003-07-09 Dismountable bridge Expired - Lifetime EP1398415B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10242860 2002-09-14
DE10242860A DE10242860B3 (en) 2002-09-14 2002-09-14 Removable bridge

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EP1398415A2 EP1398415A2 (en) 2004-03-17
EP1398415A3 EP1398415A3 (en) 2004-12-29
EP1398415B1 true EP1398415B1 (en) 2008-02-27

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US (1) US7062811B2 (en)
EP (1) EP1398415B1 (en)
AT (1) ATE387544T1 (en)
DE (2) DE10242860B3 (en)
ES (1) ES2301736T3 (en)

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WO2017200410A1 (en) 2016-05-16 2017-11-23 Pgpi - Marcas E Patentes, S.A. Modular structural assembly, bridge construction system and corresponding construction method

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US9617696B1 (en) * 2014-04-21 2017-04-11 The United States Of America As Represented By The Secretary Of The Army Lightweight universal gap crossing device and method of use
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CN110565502B (en) * 2019-09-16 2024-04-12 长安大学 Folding bridge and application method thereof
CN112952267B (en) * 2021-01-29 2022-11-25 昆山乙盛机械工业有限公司 New forms of energy is battery package fixed plate for passenger train
CN114197292B (en) * 2021-12-14 2022-08-19 湖北省工业建筑集团有限公司 Assembled bridge double-layer combined steel truss structure
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DE202017103150U1 (en) 2017-05-24 2017-06-23 SEH Engineering GmbH bridge device

Also Published As

Publication number Publication date
US20040123406A1 (en) 2004-07-01
US7062811B2 (en) 2006-06-20
ATE387544T1 (en) 2008-03-15
EP1398415A2 (en) 2004-03-17
EP1398415A3 (en) 2004-12-29
DE50309246D1 (en) 2008-04-10
DE10242860B3 (en) 2004-01-22
ES2301736T3 (en) 2008-07-01

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