EP3409838B1 - Flotteur destiné à la formation de tronçons de pont - Google Patents

Flotteur destiné à la formation de tronçons de pont Download PDF

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Publication number
EP3409838B1
EP3409838B1 EP17173632.5A EP17173632A EP3409838B1 EP 3409838 B1 EP3409838 B1 EP 3409838B1 EP 17173632 A EP17173632 A EP 17173632A EP 3409838 B1 EP3409838 B1 EP 3409838B1
Authority
EP
European Patent Office
Prior art keywords
float
support
buoyancy body
bridge
water
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
EP17173632.5A
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German (de)
English (en)
Other versions
EP3409838A1 (fr
Inventor
Werner Fraundorfer
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.)
General Dynamics European Land Systems Bridge Systems GmbH
Original Assignee
General Dynamics European Land Systems Bridge Systems GmbH
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Publication date
Application filed by General Dynamics European Land Systems Bridge Systems GmbH filed Critical General Dynamics European Land Systems Bridge Systems GmbH
Priority to EP17173632.5A priority Critical patent/EP3409838B1/fr
Publication of EP3409838A1 publication Critical patent/EP3409838A1/fr
Application granted granted Critical
Publication of EP3409838B1 publication Critical patent/EP3409838B1/fr
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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
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/14—Floating bridges, e.g. pontoon bridges

Definitions

  • the present invention relates to a floating body for forming bridge sections and a floating bridge arrangement comprising such floating bodies.
  • swimming bridges such as a pontoon bridge are suitable for this.
  • floating bridges such as pontoon bridges are to remain erected at a certain point for a longer period, they are anchored to the land or by towing anchors.
  • floating bridges can only take a limited load. In some cases, however, it is necessary to transport heavy vehicles or heavy loads across a body of water whose weight exceeds the buoyancy of a floating bridge.
  • supports are attached to the pontoons to increase the load-bearing capacity of the bridge.
  • a pontoon with support is for example in the DE 1 784 572 A described.
  • Such supports then also serve to anchor the pontoon bridges at a certain point.
  • a floating body according to the preamble of claim 1 is in the GB 665,986 disclosed.
  • the length of the supports is chosen so that the unloaded buoyancy body protrudes completely from a body of water, so as not to provide any flow resistance in flowing bodies of water.
  • the load on the pontoon bridge is almost entirely borne by the supports.
  • the supports In order to be able to absorb high loads, the supports are therefore usually very stable and therefore relatively heavy. On the one hand, this results in high manufacturing costs and, on the other hand, because of the high weight of the supports, it creates difficulties when transporting the pontoon elements over the road.
  • the unloaded buoyancy body is deliberately completely or partially immersed in the water, so that part of the load acting on the bridge is absorbed by the buoyancy force of the buoyancy body and the load acting on the pontoon bridge is absorbed by the supports as is also carried by the floats.
  • the water level of the body of water plays an important role. If the water level rises only slightly, there is already a risk that the bridge will be flooded. If the water level is too low, the float cannot take up any load. As a result, the DE 1 784 572 A
  • the arrangement described is sensibly used only in stagnant waters with a hardly changing water level.
  • the invention is based on the knowledge that the supports and the buoyancy bodies are coupled to one another in the previous arrangements, which means that the load that a floating body can absorb when it is anchored to the ground is less than the sum of the loads that are caused by the supports alone and could be absorbed by the buoyancy bodies alone. This is especially the case when the buoyancy body protrudes too far from the water surface due to the selected length of the supports, so that the buoyancy force of the buoyancy body is only very low. As a rule, however, this arrangement will be selected in order to avoid flooding of a roadway provided on the surface of the float when the water level rises.
  • the buoyancy force of the buoyancy body is often not used sufficiently in conventional bridges to increase the maximum load of a bridge for given supports or to reduce the force acting on the supports.
  • buoyancy force of the buoyancy body is dependent on the length of the support when it is firmly anchored.
  • the at least one support is mounted displaceably relative to the buoyancy body, with the result that the float is still held by the support and can thus be firmly anchored, but the buoyancy body has a variable buoyancy force despite the fixed support.
  • the buoyancy body can therefore be pushed deeper into the water from a basic position than in the basic position, so that a higher buoyancy force acts than in the basic position.
  • part of the load acting on the float is absorbed by the buoyancy body and the force acting on the supports with a comparable load on the float is less than in arrangements with a fixed connection between the floatation body and supports.
  • the supports can thus be designed more easily and more cost-effectively than with previously known floating bodies with supports. With the help of the present invention it is thus also possible to apply a higher load to a floating body with the known supports.
  • the float When the water level rises, the float can adapt to the water level, so that the risk of flooding a roadway provided on the surface of the float is reduced.
  • the buoyancy body is vertically displaceable with respect to the support in order to optimally use the buoyancy force and not to change the lane plane provided on the top of the buoyant body, in particular to avoid tilting a lane plane provided on the upper side of the buoyant body.
  • a bearing with a bearing unit is provided between the buoyancy body and the support.
  • the support and / or the buoyancy body is connected to the bearing unit via an articulated connection.
  • the articulated connection offers the possibility that the anchoring at the bottom of the body of water can also take place in places that cannot be reached without deflecting the support in order to better adapt to the conditions of the ground. In flowing waters, the deflection of the supports has the additional advantage that flow forces can be absorbed.
  • the float has side walls, the bearing unit being attached to one of the side walls of the float. This enables a simple construction of the float.
  • a bearing unit with a spring element is provided between the support and the float in order to control the immersion depth of the float or to set the maximum immersion depth.
  • the spring element also serves to ensure that the buoyancy body and the support can be continuously displaced relative to one another.
  • the mounting in such a way that the spring element is tensioned when the float is pressed into the water.
  • the restoring force of the spring element is used to provide a further supporting force in addition to the buoyancy force of the float, so that the float can carry high loads.
  • the spring element is preferably designed so that in an operating state in which the lower end of the support is attached to the bottom of a body of water, the maximum compression of the spring element is achieved when the top of the float is at the level of the water level. This ensures that the top of the float does not immerse in the water even under maximum load.
  • the bearing unit is designed like a reciprocating piston with a bearing sleeve, a piston displaceable with the bearing sleeve and a spring element, the spring element being arranged in the space formed by the bearing sleeve and the piston.
  • the bearing sleeve can be arranged on the float and the piston on the support or, according to a second embodiment, the bearing sleeve can be arranged on the support and the piston on the float.
  • the spring element can be designed pneumatically, hydraulically or mechanically.
  • the subject of the present invention is also a swimming bridge arrangement comprising at least one floating body according to one of the preceding claims.
  • the floating bridge device is preferably an amphibious bridge system or a pontoon bridge.
  • a pontoon bridge is understood to mean a bridge in which the floating bodies are connected to one another. Usually there is a roadway on it the top of the interconnected floats. In an amphibious bridge system, the bridge is formed from several amphibious bridge vehicles.
  • Fig. 1 shows the basic structure of a floating body 10 for the formation of bridge elements in a body of water in a side view.
  • the floating body 10 designed as a pontoon, comprises a cuboid-shaped buoyancy body 12 with four side walls 14 and two extendable rod-like supports 16a, 16b.
  • Each support 16a, 16b is arranged with its upper end 18 on a side wall 14 of the float 12, each support 16a, 16b being firmly connected to the float 12 via a bearing unit 20a, 20b.
  • the lower end 22 of each support 16a, 16b is attached to the bottom of a body of water.
  • left support 16b is as an inclined support
  • the in Fig. 1 shown right support 16a is designed as a vertical support.
  • a roadway can be provided on the upper side of the float 12.
  • the length of the extendable supports 16a and 16b can be selected as desired and adapted to the distance between the buoyancy body 12 and the bottom of the body of water. Ideally, the length of the extendable supports 16a, 16b is adapted to the surroundings in such a way that the float 12 floats on the water and the supports 16a and 16b merely act as anchoring for the float 12. The supports 16a and 16b neither pull the float 12 under water nor do they lift the drive body out of the water.
  • Fig. 2 shows a first embodiment of a storage unit 120 for a vertical support 116.
  • the storage unit 120 is attached to a side wall 114 of the float 112.
  • the bearing unit 120 is designed like a reciprocating piston and comprises a bearing sleeve 130, a piston 132 displaceable in the bearing sleeve 130 and a spring element 134, the spring element 134 being arranged in the space 136 formed by the bearing sleeve 130 and the piston 132.
  • the spring element 134 is a hydraulic spring element which has a hydraulic fluid and a storage container 138.
  • the support 116 is connected to the piston 132.
  • the bearing sleeve 130 shifts together with the buoyancy body 112 downwards in the direction of the bottom of the water.
  • the support 116 remains in its original position, so that the buoyancy body 112 is displaced vertically with respect to the support.
  • the hydraulic fluid of the spring element 134 is compressed. The compressed hydraulic fluid counteracts the load acting on the float 112, so that only part of the force acting on the float 112 has to be absorbed by the support 116.
  • the space 136 for receiving the hydraulic fluid is dimensioned so that the maximum compression of the hydraulic fluid is then achieved is when the top of the float is at the water level.
  • FIG. 3 shows a second embodiment of a storage unit 220, which differs from that in FIG Fig. 2
  • the embodiment shown differs in that a mechanical spring element in the form of a spring 240 is used instead of a hydraulic spring element.
  • a mechanical spring element in the form of a spring 240 is used instead of a hydraulic spring element.
  • the illustrated embodiments of a storage unit are particularly suitable for vertical supports. However, they can also be used with inclined supports.
  • a bearing unit 320 is shown which is particularly suitable for an inclined support 316.
  • the bearing unit 320 is designed like a reciprocating piston and has a bearing sleeve 330, a piston 332 displaceable in the bearing sleeve 330 and a spring element in the form of a spring 334, the spring element being arranged in the space 336 formed by the bearing sleeve 330 and the piston 332.
  • a rod 342 is arranged parallel to and at a distance from the side wall of the float 312. One end of the rod 342 is fastened to the float 312 and the other end to the piston 332 of the bearing unit 320, so that the rod 342 can be displaced with respect to the bearing sleeve 330.
  • the support 316 is connected to the bearing sleeve 330 via a joint 344.
  • a pivotable support beam 346 is also provided between the bearing sleeve 330 and the support 316.
  • the rod 342 together with the float 312 is pressed down towards the bottom of the water. Since the support 316 remains in its original position, the spring 334 is compressed. The buoyancy body 312 is displaced downward in the vertical direction relative to the inclined support 316. The compressed spring 334 counteracts the load acting on the buoyancy body 312, so that only part of the force acting on the buoyancy body 312 has to be absorbed by the inclined support 316.
  • pontoon-like buoyancy body 12 is only intended to serve as an illustration.
  • all floating bodies are included in which at least one vertical or inclined support is attached to the buoyancy body by means of a bearing unit, wherein the support and the buoyancy body can be displaced relative to one another, in particular being displaceable relative to one another in a stepless manner.
  • the buoyancy body thus stands for any propellant element that is suitable for the construction of bridges. It can be equipped like pontoons without its own drive or like an amphibious vehicle with its own drive.
  • floating bodies 10 with vertical and inclined supports 16a, 16b can thus be used both in an amphibious bridge ( Fig. 6 ) as well as in a pontoon bridge ( Fig. 7 ) can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Claims (8)

  1. Corps flottant dévolu à la réalisation de tronçons de ponts, comprenant un flotteur (12 ; 112 ; 212 ; 312) et au moins un étai déployable (16a, 16b ; 116 ; 216, 316) en forme de tige, qui est implanté sur ledit flotteur (12 ; 112 ; 212 ; 312) par son extrémité supérieure (14) et peut être fixé au fond d'une étendue d'eau, par son extrémité inférieure (22), ledit étai (16a, 16b ; 116 ; 216, 316) étant conçu pour absorber au moins une partie d'une force agissant sur ledit corps flottant, sachant que l'étai (16a, 16b ; 116 ; 216, 316) est monté à déplacement vertical par rapport au flotteur (12 ; 112 ; 212 ; 312) et sachant qu'un système de montage, muni d'une unité de montage (20a, 20b ; 120 ; 220 ; 320), est prévu entre ledit flotteur (12 ; 112 ; 212 ; 312) et ledit étai (16a, 16b ; 116 ; 216, 316), ladite unité de montage (20a, 20b ; 120 ; 220 ; 320) étant de réalisation du type vérin de levage comportant un manchon de support (130 ; 330), un piston (132 ; 332) apte à coulisser dans ledit manchon de support (130 ; 330), et un élément élastique (134 ; 240 ; 334), caractérisé par le fait que l'unité de montage est reliée rigidement au flotteur ; par le fait que l'élément élastique (134 ; 240 ; 334) est logé dans l'espace formé par le manchon de support (130 ; 330) et par le piston (132 ; 332) ; et par le fait que le manchon de support (130 ; 330) est implanté sur le flotteur (12 ; 112 ; 212) et le piston (132 ; 332) est implanté sur l'étai (16a, 16b ; 116 ; 216), ou bien ledit manchon de support (130 ; 330) est implanté sur ledit étai (316) et ledit piston (132 ; 332) est implanté sur ledit flotteur (312).
  2. Corps flottant selon la revendication 1, caractérisé par le fait que le flotteur (12 ; 112 ; 212 ; 312) présente des parois latérales, et l'unité de montage (20a, 20b ; 120 ; 220 ; 320) est fixée à une paroi latérale dudit flotteur (12 ; 112 ; 212 ; 312).
  3. Corps flottant selon la revendication 1 ou 2, caractérisé par le fait que l'étai (16b ; 316) et/ou le flotteur (12 ; 312) est (sont) relié(s) à l'unité de montage (20b ; 320) par l'intermédiaire d'une liaison articulée (344).
  4. Corps flottant selon l'une des revendications précédentes, caractérisé par le fait que l'unité de montage est conçue de façon telle que l'élément élastique (134 ; 240 ; 334) se bande lorsque le flotteur (12 ; 112 ; 212 ; 312) est enfoncé dans l'eau.
  5. Corps flottant selon l'une des revendications précédentes, caractérisé par le fait que l'élément élastique (134 ; 240 ; 334) est conçu de façon telle que, dans un état de fonctionnement dans lequel l'extrémité inférieure (22) de l'étai (16a, 16b ; 116 ; 216, 316) est fixée sur le fond d'une étendue d'eau, la compression maximale dudit élément élastique (134 ; 240 ; 334) soit atteinte lorsque la face supérieure dudit corps flottant (10) se trouve à la hauteur du niveau des eaux.
  6. Corps flottant selon l'une des revendications précédentes, caractérisé par le fait que l'unité de montage (20a, 20b ; 120 ; 220 ; 320) est pourvue d'un élément élastique (134 ; 240 ; 334) pneumatique, hydraulique ou mécanique.
  7. Agencement de pont flottant, incluant au moins un corps flottant (10) conforme à l'une des revendications précédentes.
  8. Agencement de pont flottant selon la revendication 7, caractérisé par le fait que le dispositif à pont flottant est un système de pont amphibie, ou un ponton.
EP17173632.5A 2017-05-31 2017-05-31 Flotteur destiné à la formation de tronçons de pont Active EP3409838B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17173632.5A EP3409838B1 (fr) 2017-05-31 2017-05-31 Flotteur destiné à la formation de tronçons de pont

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17173632.5A EP3409838B1 (fr) 2017-05-31 2017-05-31 Flotteur destiné à la formation de tronçons de pont

Publications (2)

Publication Number Publication Date
EP3409838A1 EP3409838A1 (fr) 2018-12-05
EP3409838B1 true EP3409838B1 (fr) 2021-06-16

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ID=59053896

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EP17173632.5A Active EP3409838B1 (fr) 2017-05-31 2017-05-31 Flotteur destiné à la formation de tronçons de pont

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958169A (fr) * 1947-06-04 1950-03-04
FR78902E (fr) * 1960-05-10 1962-09-28 Constructions flottantes
DE1784572B1 (de) 1968-08-20 1970-02-12 Blohm U. Voss Ag Einen Brückenabschnitt bildender, mit Stützen und der Brückenfahrbahn versehener Ponton
NL7010848A (fr) * 1970-07-22 1972-01-25

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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