WO2008148379A1 - Élément porteur pour un coffrage en béton avec dispositif de compensation automatique de déformations dues à la flexion - Google Patents

Élément porteur pour un coffrage en béton avec dispositif de compensation automatique de déformations dues à la flexion Download PDF

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Publication number
WO2008148379A1
WO2008148379A1 PCT/DE2008/000928 DE2008000928W WO2008148379A1 WO 2008148379 A1 WO2008148379 A1 WO 2008148379A1 DE 2008000928 W DE2008000928 W DE 2008000928W WO 2008148379 A1 WO2008148379 A1 WO 2008148379A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
support
length
carrier element
formwork
Prior art date
Application number
PCT/DE2008/000928
Other languages
German (de)
English (en)
Inventor
Hans Braun
Original Assignee
Peri 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 Peri Gmbh filed Critical Peri Gmbh
Priority to CA2687832A priority Critical patent/CA2687832C/fr
Priority to US12/451,707 priority patent/US20100115860A1/en
Publication of WO2008148379A1 publication Critical patent/WO2008148379A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • 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
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E04G11/54—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like
    • E04G11/56—Girders, beams, or the like as supporting members for forms of extensible type, with or without adjustable supporting shoes, fishplates, or the like of telescopic type

Definitions

  • the invention relates to a support element for concrete formwork, in particular a ceiling support element, with a support for receiving external forces, with a drawstring, which runs behind the support, and with at least one length-adjustable tensioning device, which is arranged between the support and drawstring, with the local distance of carrier and drawstring is adjustable.
  • Such a carrier element has become known, for example, from the company publication "Column Hung System” by HI-LITE Systems, div of JASCO Sales Inc., Mississauga, Ontario, Canada, 2001.
  • a structure of the building such as a wall, pillar or ceiling, to be fabricated, is reshaped with shuttering elements and poured with liquid concrete.
  • a support structure usually comprises a plurality of support elements which are partially fixedly connected to each other (longitudinal and transverse beams), and are partially fixed or supported on solid structures (such as already completed building parts such as a storey column or a basement floor).
  • support elements By the weight of support elements, and especially by the weight of overlying or adjacent other support elements and liquid concrete, support elements can be deformed. Deformed support structures generally lead to undesirable deviations in shape of the finished concrete structure from the desired concrete structure.
  • the support elements are prepared (for example, with Kochhöhungsangn) so that they are without load one for the structure to be produced initially undesirable curvature, but under load adjusts a desired for the concrete structure to be produced shape.
  • the precalculation of the bending deformation is time-consuming and difficult and has to be carried out individually and in each case for each concrete structure to be produced and also for each support element.
  • a specially prepared carrier element can usually only be used for a single concrete structure to be produced at a specific location of the carrier structures.
  • compliance with the desired ceiling thickness is difficult because the formwork deflection changed during the concreting process.
  • a carrier element of the type mentioned which is characterized in that the adjustable-length clamping device is designed as a length-adjustable compensation device with a motor drive for Einsander the length of the compensation device that a measuring device is provided by the position of the carrier around
  • Compensating device can be determined relative to a desired position, and that a control device is provided, through which the length of the compensation device in dependence on the position of the carrier is controllable.
  • the shape of a carrier element and in particular the curvature of the carrier of the carrier element, by a length-adjustable compensation device to decide and adjust.
  • the length of the compensating device is chosen so that the desired shape (usually a straight shape) of the carrier is established.
  • the length of the compensating device can also be adjusted under load, in particular readjusted, by the motor drive.
  • the carrier has a (usually straight) front side over which the external forces can act on him. On this front, for example, other support elements or formwork support are on or. Above the opposite side of the carrier runs a drawstring, usually slightly oblique to the carrier. The outer ends of drawstring and carrier are typically connected together; the outer ends of the carrier are also usually attached to solid structures. In general, there is a further connection between the carrier and tension band on the
  • the drawstring is under tension, while the carrier and optionally other pressure belts are under compressive stress. If an external force now acts on the carrier, which tries to deform it (press in), then with the compensating device a spreading force can be exerted between the carrier and the tension band, which holds the carrier in the previous form.
  • the compensation device then causes under load a redistribution of the elastic deformation in the carrier element, namely from the carrier to the tension band.
  • the shape of the carrier is monitored by comparing a measured actual position of the carrier with a desired position.
  • the nominal position of the carrier is absolutely by the to be built
  • the actual position of the carrier is a function of the applied load, the dead weight of the carrier element and the length adjustment of the compensation device.
  • the carrier is a measuring device that passes on their measurement results (usually in electronic form) to a (also usually electronic) control device. If the actual position of the carrier deviates from the desired position, a change in length of the compensation device is actuated which brings the carrier closer to its desired position. By a continuous control of the carrier can be fully automatically kept at the desired position.
  • a desired shape of the carrier of the carrier element can be maintained in principle any desired loads. Predictions of the load are not required (within a maximum load of the support member).
  • the carrier element need not be particularly resistant to bending, since deformation of the carrier is prevented by the length-adjustable compensation device.
  • the carrier element according to the invention can be constructed relatively easily and with low material, whereby it is easy to handle when assembling and dismantling a formwork. Weight savings of up to 50% can be achieved compared to conventional carrier elements.
  • a compensation device per carrier element
  • a plurality of measuring points and / or a plurality of compensating devices may be provided per carrier / carrier element in order to increase the accuracy of the compensation.
  • a measuring point is then provided for each compensation device.
  • a measuring point is preferably located on the carrier / carrier element as close as possible to the associated compensation device.
  • An additional advantage of a carrier element according to the invention lies in a simplified stripping of formwork elements.
  • the carrier element can be lowered and / or retracted by operating the compensation device (lowering the pressure).
  • the length-adjustable compensation device can build up pressure in one direction (piston side) (can apply a spreading force between the carrier and the drawstring, for example).
  • a plunger cylinder can be used.
  • the use of double-acting cylinder can be useful, for example, for the compensation of deformations of high formwork in strong wind.
  • the motor drive comprises an electric drive, in particular a linear motor.
  • a linear motor Such a drive is simple and easy to maintain.
  • the motor drive comprises a hydraulic drive or a pneumatic drive.
  • a hydraulic drive particularly large forces can be applied.
  • hydraulic agents are particularly water and oil into consideration. Water does not cause any damage on site leaks. Due to the slow passage of deformation paths during concreting can for pressure supply and pressure maintenance in water on conventional high-pressure cleaning equipment (or their
  • Assemblies are used.
  • hydraulic or pneumatic actuators a common pressure supply for a variety of compensation devices, in particular by different support elements, take place; the force control at the individual compensation devices then takes place by means of local controllable valves, either in the supply lines of the compensation devices or directly at the respective compensation device.
  • the motor drive may include a mechanical adjustment device (such as gears, spindles or wedges) driven by the motor drive.
  • the measuring device comprises a spacer rod or a rope with pulley and ballast or a laser rangefinder.
  • a spacer bar and a rope with ballast are very simple measuring devices.
  • a laser rangefinder is particularly easy to install.
  • a carrier element according to the invention in which the compensation device is length-adjustable in a direction which extends substantially perpendicular to the carrier. This ensures an effective and even force entry into the carrier.
  • the carrier element has at two opposite ends of the carrier fastening means for the carrier element, in particular for attachment to projectile columns.
  • This embodiment is particularly suitable for slab formwork, with larger distances (typically 7m to 10m) spanned by a girder structure. In this embodiment, no further attachment or support points are provided except at the opposite ends of the carrier.
  • the fastening means may also be designed for attachment to other carriers.
  • the carrier is designed to be telescopic.
  • the carrier element can be adjusted to a length to be spanned.
  • the carrier has fastening means for fastening a plurality of formwork carriers on the carrier.
  • fastening means for fastening a plurality of formwork carriers on the carrier.
  • a plurality of length-adjustable compensation devices are provided, which are distributed over the length of the carrier.
  • Each compensating device preferably has its own measuring and control device.
  • a substantially uniform distribution of the compensation devices via the carrier element is preferred.
  • a signal device which outputs a warning signal when a limit value for the position of the carrier is exceeded, in particular an acoustic, optical or electronic warning signal.
  • the scope of the present invention also includes the use of carrier elements according to the invention for constructing a concrete lining, in particular for forming a slab formwork.
  • These concrete formworks have a high manufacturing accuracy, and can be used in particular free of formwork deformations. Since support elements of lightweight design can be used universally the construction and disassembly of the formwork according to the invention is low in labor and therefore cost.
  • a support member according to the invention for continuously compensating bending deformations of the support, wherein a variable external force acts on the support, in particular wherein the external force on the support is caused by the weight of concrete.
  • FIG. 1 shows an embodiment of a carrier element according to the invention for a slab formwork, in a schematic side view
  • FIG. 2a shows a support structure for a slab formwork with carrier elements according to the invention, in a schematic oblique view
  • Formwork beams and formwork elements in a schematic oblique view.
  • FIG. 1 shows an embodiment of a carrier element 1 according to the invention, which is used to build a slab formwork (cf. also FIGS. 2a, 2b) and is fastened to two projectile columns 2, 3. It should, for example, a flat, horizontal ceiling are made.
  • the support element 1 has an upper support 4, on whose (in Fig. 1 overhead) 14 further support elements or formwork support or formwork elements can be placed and / or fixed (not shown).
  • the carrier 4 is preferably telescopic and consists for example of one or more steel profiles. Behind the support 4 (in Fig. 1 below the support 4) extends a tension band 5, which is stretched in a V-shape.
  • the drawstring 5 is fixed in the middle at a lower end of a length-adjustable compensation device 6.
  • the outer ends of the drawstring 5 are connected via fastening means 7a, 7b to the outer ends of the carrier 4.
  • the drawstring 5 (or each section of the drawstring) is designed, for example, as a wire rope or as a solid rod or as a steel tube.
  • the fastening means 7a, 7b are additionally connected to one another by a pressure rod 8.
  • the pressure rod 8 may be formed, for example, as a solid steel rod or as a steel tube (Note that also the carrier 4 itself can act as a push rod or acts).
  • the carrier 4 is connected at the center to the upper end of the compensating device 6 via a connecting member 13 (e.g., rod, linkage, punch of a cylinder).
  • the compensation device 6 is adjustable in length in Fig. 1 in the vertical direction by a power drive.
  • the support member 1 with the Geunterklalen 2, 3 is firmly connected (ie, the outer ends of the support 4 are also fixed under load).
  • a direct attachment or support of the support element 1 on an already manufactured floor slab (ie the floor) 9 does not exist, for example because the floor slab 9 is not sufficiently cured.
  • the support element 1 could be supported near a floor pillar 2, 3 still on a support on the ground, because premature loading of a floor ceiling is possible in these areas.
  • the carrier element 1 spans the intermediate space between the projectile columns 2, 3.
  • the carrier 4 begins to bend downwards in the middle. In other words, the distance x of the carrier 4 to the bottom 9 decreases.
  • the distance x of the carrier 4 from the bottom 9 is monitored with a laser rangefinder 11 and compared in a control device 12 with a target distance xs.
  • the setpoint distance xs corresponds to the position of the undeformed, straight carrier 4.
  • the laser rangefinder 11 is arranged in the region of the compensation device 6.
  • control device 12 an increase in the length L of the compensation device 6 at. This leads to a lifting of the carrier 4 and a (depending on the E-modulus of the
  • the carrier 4 can be maintained at a constant level.
  • the position of the support 4 is maintained at the desired position, i. the distance x on the target distance xs.
  • the carrier 4 always remains approximately straight, and the ceiling receives the desired, planar shape.
  • Figures 2a and 2b illustrate the use of carrier elements according to the invention in a support structure for a slab formwork for the production of a floor slab.
  • Fig. 2a shows an already finished, but not yet fully cured floor slab (floor) 9, from the four projectile columns 2, 3, 51, 52 protrude.
  • the Geunterklalen 2, 3, 51, 52, are already fully cured.
  • the new floor to be manufactured ceiling is to be built, the associated slab formwork should be attached or supported only on the Geuntersaululen 2, 3, 51, 52, but not on the not fully loadable bottom 9.
  • This is a support structure with a total of five invention Carrier elements 53-57 and another carrier 58 used.
  • the two support members 53, 54 are fixed to the outer ends of their support 4 to fixed structures, namely the Geunterklalen 51, 2 and 52, 3, (and thus always fixed with these outer ends under load).
  • the attachment takes place with anchors in the respective column body and a support on a frame 62 which engages around the respective pillar.
  • the carriers 4 of the carrier elements 53, 54 are also referred to as yoke carriers.
  • the carrier 4 of the support members 55-57 are also referred to as cross member; they are telescopic (i.e., variable in length).
  • the carriers 4 of the carrier elements 53, 54 and 55, 56, 57 intersect at right angles.
  • Each support element 53-57 according to the invention each have a length-adjustable compensation device 6 with a motor drive (not shown in detail), with which the local distance of a drawstring 5 from the carrier 4, i. the distance (measured perpendicular to the carrier 4) in
  • Area of the compensation device 6, can be adjusted.
  • the carrier 4 and the drawstrings 5 of each carrier element 53-57 are in the middle via the respective compensation device 6, a connecting element 13 (rod, linkage) and optionally (only in the support elements 55-57) the built, crossing support 58 secured together.
  • a spacer rod 59 for measuring the position of the carrier 4 of the respective carrier element 53- 57 is provided in each case.
  • the distance of the lower end of the length-adjustable compensating device 6 from the bottom 9 is measured directly. Together with the present length adjustment of the compensation device 6 (and the dimension of the connecting element 13 and possibly the carrier 58), this can be used to infer the current position and thus the degree of deflection of the respective carrier 4.
  • the position of the carrier 4 under load on each carrier element 53-57 can be regulated separately (as described in detail in FIG. 1).
  • Fig. 2b shows the support structure of Fig. 5a at a later stage of construction.
  • formwork supports 60 On the supports 4 of the support members 53, 54 and on the support 58 formwork supports 60 have been placed.
  • This formwork support 60 have a slightly higher height than the adjacent support 4 of the support members 55-57 (alternatively, the height of the support 4 of the support members may be equal to the height of the formwork beams 60).
  • ceiling slabs 61 alternatively ceiling scarf elements with upward facing skin
  • Fig. 2b only a portion of the formwork elements 61 is shown for simplicity.
  • the present invention describes a compensating device for a carrier or bolt, wherein the deflection of the carrier by the compensation device is adjustable by clamping against a running behind the carrier drawstring.
  • the drawstring is spaced from the support in the region of the compensation device, the outer ends of the drawstring engaging directly on the support.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

L'invention concerne un élément porteur (1; 21; 31; 41; 53-57) pour un coffrage en béton, qui comprend une poutrelle (4) destinée à absorber des forces extérieures (10), un tirant (5), s'étendant derrière la poutrelle (4), et au moins un dispositif tendeur réglable en longueur, placé entre la poutrelle (4) et le tirant (5), dispositif au moyen duquel la distance locale entre la poutrelle (4) et le tirant (5) peut être réglée. L'invention se caractérise en ce que le dispositif tendeur réglable en longueur est réalisé sous la forme d'un dispositif de compensation (6; 6a, 6b) réglable en longueur, pourvu d'un système d'entraînement motorisé permettant de régler la longueur du dispositif de compensation (6; 6a, 6b); un dispositif de mesure est prévu pour permettre de déterminer la position (x) de la cible (4) au niveau du dispositif de compensation (6; 6a; 6b) par rapport à une position de consigne (xs) et un dispositif de commande (12) est prévu pour permettre de régler la longueur (L) du dispositif de compensation (6; 6a, 6b) en fonction de la position (x) de la poutrelle (4). L'élément porteur selon l'invention permet de réaliser n'importe quelle structure en béton de façon précise et économique.
PCT/DE2008/000928 2007-06-05 2008-06-03 Élément porteur pour un coffrage en béton avec dispositif de compensation automatique de déformations dues à la flexion WO2008148379A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2687832A CA2687832C (fr) 2007-06-05 2008-06-03 Element porteur pour un coffrage en beton avec dispositif de compensation automatique de deformations dues a la flexion
US12/451,707 US20100115860A1 (en) 2007-06-05 2008-06-03 Girder element for concrete formwork comprising a structure for automatically compensating bending strains

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007026499.4 2007-06-05
DE102007026499A DE102007026499B3 (de) 2007-06-05 2007-06-05 Trägerelement für eine Betonschalung mit Vorrichtung zur automatischen Kompensation von Biegeverformungen

Publications (1)

Publication Number Publication Date
WO2008148379A1 true WO2008148379A1 (fr) 2008-12-11

Family

ID=39777067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000928 WO2008148379A1 (fr) 2007-06-05 2008-06-03 Élément porteur pour un coffrage en béton avec dispositif de compensation automatique de déformations dues à la flexion

Country Status (4)

Country Link
US (1) US20100115860A1 (fr)
CA (1) CA2687832C (fr)
DE (1) DE102007026499B3 (fr)
WO (1) WO2008148379A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011089148A1 (fr) * 2010-01-20 2011-07-28 Doka Industrie Gmbh Tête de décintrement pour système de coffrage de dalles et système de coffrage de dalles
CN112227706A (zh) * 2020-09-29 2021-01-15 浙江绿筑集成科技有限公司 一种使用空间张拉索网的楼板支撑方法

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Publication number Priority date Publication date Assignee Title
DE102010001041A1 (de) * 2010-01-20 2011-07-21 Doka Industrie Gmbh Deckenschalungsträger und Schalungselement mit einem Träger
US20120180407A1 (en) * 2011-01-13 2012-07-19 Rees Kyle J Roof truss kit to enable support of solar panels on roof structures
DE102013103458A1 (de) * 2013-04-08 2014-10-09 Peri Gmbh Schalungssystem zur Herstellung einer Betondecke
CN104153570A (zh) * 2014-08-01 2014-11-19 唐安虎 钢结构楼房现浇楼板快速支模系统
CN106760495B (zh) * 2016-11-10 2018-11-27 中国三冶集团有限公司 一种楼板施工方法
US10407925B2 (en) 2017-07-10 2019-09-10 Doka Gmbh Method of installing a formwork support system, formwork support system and longitudinal beam
US10053875B1 (en) * 2017-07-10 2018-08-21 Doka Gmbh Formwork support system and formwork support prop
US10487521B2 (en) * 2017-07-10 2019-11-26 Doka Gmbh Formwork support system and method of installing a formwork support system
DE102018118230A1 (de) * 2018-07-27 2020-01-30 Peri Gmbh Lagerkopf mit abspanntraverse und damit verbundenes deckenschalungssystem
CN112227705B (zh) * 2020-09-29 2022-04-01 浙江绿筑集成科技有限公司 一种使用张拉弦的楼板支撑方法
CN114838700B (zh) * 2022-04-25 2023-04-11 上海建工四建集团有限公司 一种混凝土墙体施工用模架系统形变监测及调控方法
CN115492402A (zh) * 2022-08-31 2022-12-20 吉林大学 一种可拆分式三杆张拉整体精密装配装置

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FR426906A (fr) * 1945-11-23 1911-07-21 Otto Arndt échafaudage pour la construction ou le nettoyage des plafonds
FR1179807A (fr) * 1956-07-25 1959-05-28 Support de coffrage de plafond constitué par des éléments télescopiques ou décalables entre eux
US6434893B1 (en) * 2000-03-02 2002-08-20 Delaware Capital Formation, Inc. Apparatus and method for placing elevated concrete slabs

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DE187973C (fr) *
AT194590B (de) * 1956-12-13 1958-01-10 Wilhelm Ing Offenbeck Schalungsträger aus ineinander verschiebbaren oder gegeneinander versetzbaren Teilen
US6345484B1 (en) * 1999-12-13 2002-02-12 James Oliver Brace for mating seam of multi-section manufactured home
US6379084B1 (en) * 1999-12-17 2002-04-30 Jack Kennedy Metal Products And Buildings, Inc. Mine stopping

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Publication number Priority date Publication date Assignee Title
FR426906A (fr) * 1945-11-23 1911-07-21 Otto Arndt échafaudage pour la construction ou le nettoyage des plafonds
FR1179807A (fr) * 1956-07-25 1959-05-28 Support de coffrage de plafond constitué par des éléments télescopiques ou décalables entre eux
US6434893B1 (en) * 2000-03-02 2002-08-20 Delaware Capital Formation, Inc. Apparatus and method for placing elevated concrete slabs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011089148A1 (fr) * 2010-01-20 2011-07-28 Doka Industrie Gmbh Tête de décintrement pour système de coffrage de dalles et système de coffrage de dalles
CN112227706A (zh) * 2020-09-29 2021-01-15 浙江绿筑集成科技有限公司 一种使用空间张拉索网的楼板支撑方法
CN112227706B (zh) * 2020-09-29 2022-06-07 浙江绿筑集成科技有限公司 一种使用空间张拉索网的楼板支撑方法

Also Published As

Publication number Publication date
DE102007026499B3 (de) 2009-02-05
US20100115860A1 (en) 2010-05-13
CA2687832A1 (fr) 2008-12-11
CA2687832C (fr) 2012-09-18

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