EP2799620A1 - Échafaudage pour la fabrication de constructions - Google Patents

Échafaudage pour la fabrication de constructions Download PDF

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Publication number
EP2799620A1
EP2799620A1 EP20140165173 EP14165173A EP2799620A1 EP 2799620 A1 EP2799620 A1 EP 2799620A1 EP 20140165173 EP20140165173 EP 20140165173 EP 14165173 A EP14165173 A EP 14165173A EP 2799620 A1 EP2799620 A1 EP 2799620A1
Authority
EP
European Patent Office
Prior art keywords
tendon
support structure
deflecting element
deflecting
relative
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Withdrawn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
EP20140165173
Other languages
German (de)
English (en)
Inventor
Dieter Herbert
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.)
Implenia Construction GmbH
Original Assignee
Bilfinger Construction GmbH
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 Bilfinger Construction GmbH filed Critical Bilfinger Construction GmbH
Publication of EP2799620A1 publication Critical patent/EP2799620A1/fr
Withdrawn legal-status Critical Current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
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges

Definitions

  • the present invention relates to a scaffolding for the construction of structures, with a support structure and a biasing device for the support structure, wherein the biasing means arranged at two predetermined positions of the support structure end bearing for a tendon to define a clamping area between the repositories and at least one deflection element for the tendon having.
  • a scaffold of the type mentioned is from the WO 2004/109018 A1 known.
  • the known framework is used in the construction of structures in the form of, for example, bridges and viaducts.
  • the known scaffold comprises a support structure and a pretensioning device for the support structure, wherein the pretensioning device has two end bearings for a tendon arranged at predeterminable positions of the support structure. Between the repositories a clamping range is defined.
  • the biasing device further comprises a deflection element for the tendon, which consists in concrete from between the reposable tensioning tension strands. This flexible tendon in the form of tension strands can be stretched to compensate for or avoid stress-induced deformation of the support structure.
  • Such stress-induced deformations are extremely undesirable in practice, since such deformations often impair the precision of a structural system to be created with the aid of the framework. In extreme cases, it may result that components of a structural system to be created by such deformations, for example, too high or too low realized or positioned and then no longer fit together with other components of the structure.
  • the known framework is problematic in various respects in practice. Firstly, depending on the length of the clamping region between the repositories, it is very complicated to position the continuous cables formed by the tensioning strands between the repositories, since the cable has a considerable weight with a large distance between the repositories. For safe arrangement of the cable Consequently, a considerable effort must be made between widely spaced repositories.
  • the present invention is therefore the object of a scaffold of the type mentioned in such a way and further, that a secure bias of a support structure is achieved even with relatively wide clamping ranges and distances between the repositories with structurally simple means.
  • the above object is achieved by a scaffold with the features of claim 1.
  • the framework is configured and further developed such that the tensioning member has at least two clamping element elements each arranged between a final bearing and a deflecting element.
  • the tendon on at least two tendon elements which are each arranged between a repository and a deflection.
  • the arrangement of the pretensioning device on the support structure is considerably simplified, since there is no need to arrange a tensioning element extending continuously between the end bearings, but only individual - much shorter - tendon elements can be individually positioned.
  • the assembly or arrangement of the biasing device is thereby considerably simplified.
  • a scaffold is specified in which a secure bias of a support structure is achieved even with relatively wide clamping ranges and distances between the repositories with structurally simple means.
  • the end bearing may have at least one receptacle for a tendon element pivotable about a horizontal axis relative to a base part of the repository or relative to the support structure. Due to the pivoting of the receptacle, a simple adjustment of the orientation of the receptacle to the angular position is made possible, which occupies the tendon element relative to the support structure in the mounted state. This angular position is ultimately dependent on the position and the distance of the deflecting element relative to the support structure.
  • the end bearing may have a tensioner for a tendon element.
  • the repository could only serve for receiving or supporting the tendon element.
  • the deflection element may have at least one pivotable about a horizontal axis relative to a base of the deflecting element or relative to the support structure receptacle for a tendon element.
  • the deflecting element can have such a pivotable receptacle.
  • Both the receptacle at the end bearing and the receptacle on the deflecting element can be realized as freely rotatable receptacles, so that the pivotal position of the receptacles during the biasing of the tendon quasi automatically - according to the angular position of the tendon element relative to the support structure - adjusts.
  • Both the horizontal axis of the receptacle of the repository and the horizontal axis of the receptacle of the deflecting element can be arranged substantially perpendicular to the support structure and perpendicular to the longitudinal direction of the tendon element. This ensures a particularly stable, safe and effective arrangement of the biasing device on the support structure.
  • the deflecting element can have a coupling element that is displaceable relative to a base part of the deflecting element and is pivotable about a horizontal axis on the base part of the deflecting element.
  • the coupling element can position and align relative to the deflecting element or to the base part of the deflecting element as a function of the prestressing of coupled tendon elements. The exercise of forces from undesirable directions of the prestressed tendon element on the deflecting element is thereby largely avoided.
  • At least one and preferably two or more receptacles for a tendon element can be mounted pivotably on the coupling element.
  • the coupling element can be displaceable in a dovetail-like guide relative to the base part of the deflecting element.
  • a guide ensures a very reliable and low-wear guidance of the coupling element relative to the deflecting element.
  • This guide can be arranged to realize the pivotability of the coupling element pivotally mounted on the base of the deflecting element.
  • the deflection element may comprise a tensioner for a tendon element.
  • the exertion of the bias voltage in a selective and flexible manner is possible alternatively or additionally to the exercise of a bias from a repository of a deflection from.
  • a voltage input can be realized at least in the immediate vicinity of the pointwise or regionally occurring load on the carrier structure.
  • one or more tensioner in the range of one or more deflection elements to provide a lower performance required and thus more cost-effective tensioner to realize a required minimum bias of the tendon as a smaller number more powerful and expensive tensioner.
  • the introduction of the biasing force can thus be done in a flexible manner at many points along the tendon.
  • a tensioner of the type described above can be realized by a press or a heavy duty cylinder.
  • a tensioner In the concrete choice of a tensioner is to be based on the particular application.
  • the tensioner and the at least one receptacle for a tendon element can be designed as a combined component which can pivot about a horizontal axis relative to a base part of the deflecting element.
  • the tensioner according to the angular position of the tendon element relative to Carrier structure be suitably aligned together with the recording.
  • the deflecting element can be coupled to the carrier structure via a connecting element.
  • a spacer element can be arranged between the deflecting element and the connecting element in order to ensure a suitable spacing of the deflecting element from the carrier structure.
  • the spacer element can be adjustable in length in order to realize different distances between deflecting element and carrier structure.
  • the spacer element may comprise at least one preferably statically suitable, pressure-force-absorbing element, such as e.g. a concrete support or a steel beam, or one or more steel girders (eg HEB girders) or a combination of steel girder and threaded spindle. By turning the threaded spindle (s) or changing the length of the steel support (s), the distance between the deflecting element and the support structure can be changed or set according to current requirements of the construction situation.
  • a train protection can be realized between the connecting element and the deflecting element.
  • the train protection may have on opposite sides of the spacer element arranged clamping elements or tension cables.
  • the tendon elements may be designed differently.
  • embodiments of the tendon elements as tension strands or tie rods offer this. Due to their rigidity, tension rods offer advantages in guiding the ends of the tension rods to the receptacles. Furthermore, tie rods are more robust against environmental influences and mechanical damage than tension strands and can not only transfer tensile forces but also shear forces. Due to their flexibility, tensioning strands, in turn, offer advantages in terms of storage and transport, since the tensioning strands can be transported in a rolled-up state.
  • the pretensioning device may have, in addition to the eccentric pretensioning described above, a biasing force that extends through the support structure.
  • a combination of an eccentric and a centric bias can thus be realized.
  • Such a centric bias can - be stored in the repositories - as the eccentric bias.
  • the number of bearing components of the biasing device can be kept as low as possible.
  • Fig. 1 shows a schematic side view, partially, an embodiment of a scaffolding for the construction of structural systems.
  • the framework has a carrier structure 1 and a pretensioning device 2 for the carrier structure 1.
  • the pretensioning device 2 has two end bearings 3 arranged at predefinable positions of the support structure 1 for a tensioning element 4 for defining a clamping region between the end bearings 3 and a plurality of deflection elements 5 for the tensioning element 4.
  • Fig. 1 For reasons of clarity, only a right-hand part of the exemplary embodiment is shown.
  • the complete embodiment also has a further deflecting element 5 and a further end bearing 3 corresponding to the illustrated end bearing 3.
  • the biasing device 2 ensures an eccentric bias of the support structure. 1
  • the clamping member 4 more between the end bearing 3 and a deflector 5 arranged individual tendon elements 6.
  • two individual tendon elements 6 run essentially parallel to one another between the end stock 3 and the deflecting element 5 shown in the middle of the figure.
  • two further tendon elements 6 run between the two in the Fig. 1
  • the embodiment has four more tendon elements 6, which is located between in the Fig. 1 Left deflecting element shown 5 and the other deflecting element 5, not shown, as well as between the further deflecting element 5 and the not shown further repository 3 extend. Consequently, the embodiment shown here has a total of eight tendon elements 6 in each case one of two support elements 1a, wherein the support structure 1, as the Fig. 2 removable, has two mutually parallel support elements 1a.
  • Fig. 2 shows in a schematic plan view, partially, that embodiment of Fig. 1 , in which Fig. 2 the same part of the embodiment shows how the Fig. 1 , Of the Fig. 2 can be removed that the support structure 1 has two mutually parallel support elements 1a, not shown rails for a trolley 7 have.
  • the trolley 7 allows the positioning of different functional elements for construction activities.
  • Such functional elements For example, a gripper for performing a Bodenaushubs or a concreting head for example.
  • the introduction of a concrete floor below the support structure 1 may be.
  • Fig. 3 shows in a side view and in a front view in a schematic manner a repository 3.
  • the repository 3 has in concrete two receptacles 8 for each one tendon element 6. These receivers 8 are pivotable about a horizontal axis 9 relative to a base part 10 of the repository 3. Due to the pivoting angle positions of the tendon elements 6 relative to the support structure 1 in the use of the framework bill be taken into account.
  • FIG. 4 shows a deflecting element 5 of the exemplary embodiment in a schematic side view and in two different operating states Fig. 1 ,
  • the deflecting element 5 has a coupling element 13 which is displaceable relative to a base part 11 of the deflecting element 5 and is pivotable about a horizontal axis 12 on the base part 11 of the deflecting element 5.
  • the coupling element 13 is displaceable in a dovetail-like guide, wherein the upper part of Fig. 4 shows a shift to the right and the lower part of Fig. 4 shows a displacement of the coupling element 13 to the left.
  • two receptacles 14 are pivotally mounted for a tendon element 6.
  • Each of the deflecting elements 5 shown here has a total of two coupling elements 13, each with two receptacles 14. Thus, a total of four tendon elements 6 can be mounted on each deflecting element 5.
  • the pivoting of the receptacles 14 takes place about an axis 15th
  • the deflection element 5 shows a schematic side view and in a schematic plan view of an alternative embodiment of a deflection element 5.
  • the deflection element 5 has two tensioners 16 for each two tendon elements 6.
  • the tensioners 16 are in this case designed as a heavy duty cylinder, each acting simultaneously on two tendon elements 6.
  • two tendon elements 6 are accommodated in a receptacle 17.
  • a tensioner 16 and a receptacle 17 are formed as a combined component which is about a horizontal axis 18 relative to a base part 19 of the deflecting element fifth is pivotable.
  • the deflecting element 5 is coupled to the carrier structure 1 via a connecting element 20.
  • a spacer element 21 is arranged in order to arrange the deflecting element 5 at the desired distance from the carrier structure 1.
  • the spacer 21 is in concrete at least one statically suitable steel support (eg HEB carrier), with which the distance between the deflecting element 5 and the connecting element 20 can be predetermined.
  • a tension lock 22 in the form of two cables or tension rods is realized between the connecting element 20 and the deflecting element 5, which are each mounted at one end on the connecting element 20 and at the other end on the deflecting element 5.
  • the tendon elements 6 are formed as tie rods.
  • the pretensioning device 2 has an additional pretension 23 extending through the support structure 1, which acts as a centric pretensioning device 23.
  • the bias voltage 23 is stored as the tendon elements 6 in the repositories 3 and extends without interruption between the two repositories third

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
EP20140165173 2013-05-02 2014-04-17 Échafaudage pour la fabrication de constructions Withdrawn EP2799620A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310208018 DE102013208018A1 (de) 2013-05-02 2013-05-02 Gerüst für die Erstellung baulicher Anlagen

Publications (1)

Publication Number Publication Date
EP2799620A1 true EP2799620A1 (fr) 2014-11-05

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Family Applications (1)

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EP20140165173 Withdrawn EP2799620A1 (fr) 2013-05-02 2014-04-17 Échafaudage pour la fabrication de constructions

Country Status (2)

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EP (1) EP2799620A1 (fr)
DE (1) DE102013208018A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121247A (zh) * 2016-08-01 2016-11-16 中国十七冶集团有限公司 一种预应力智能张拉方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017206995A1 (de) * 2017-04-26 2018-10-31 Krones Aktiengesellschaft Handhabungsvorrichtung und Verfahren zum Umgang mit in mindestens einer Reihe hintereinander bewegten Stückgütern

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5337531A (en) * 1992-10-15 1994-08-16 Thompson Fabricating Company, Inc. Adjustable camber truss
US5857543A (en) * 1997-12-15 1999-01-12 Universal Builders Supply, Inc. Ledger truss for scaffolding
WO2004109018A1 (fr) 2003-06-06 2004-12-16 Pacheco Pedro Alvares Ribeiro Portique possedant une precontrainte a reglage automatique
JP2005273392A (ja) * 2004-03-26 2005-10-06 Oriental Construction Co Ltd Ｐｃ鋼材を用いた橋梁補強方法
DE102007001830A1 (de) * 2007-01-12 2008-07-17 Akotherm Gmbh Zug- und Druckstab sowie Stützlager, insbesondere für eine Unterspannung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5337531A (en) * 1992-10-15 1994-08-16 Thompson Fabricating Company, Inc. Adjustable camber truss
US5857543A (en) * 1997-12-15 1999-01-12 Universal Builders Supply, Inc. Ledger truss for scaffolding
WO2004109018A1 (fr) 2003-06-06 2004-12-16 Pacheco Pedro Alvares Ribeiro Portique possedant une precontrainte a reglage automatique
JP2005273392A (ja) * 2004-03-26 2005-10-06 Oriental Construction Co Ltd Ｐｃ鋼材を用いた橋梁補強方法
DE102007001830A1 (de) * 2007-01-12 2008-07-17 Akotherm Gmbh Zug- und Druckstab sowie Stützlager, insbesondere für eine Unterspannung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106121247A (zh) * 2016-08-01 2016-11-16 中国十七冶集团有限公司 一种预应力智能张拉方法

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Publication number Publication date
DE102013208018A1 (de) 2014-11-20

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