EP3456902A1 - Coffrage perdu pour constructions en béton - Google Patents

Coffrage perdu pour constructions en béton Download PDF

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Publication number
EP3456902A1
EP3456902A1 EP18193133.8A EP18193133A EP3456902A1 EP 3456902 A1 EP3456902 A1 EP 3456902A1 EP 18193133 A EP18193133 A EP 18193133A EP 3456902 A1 EP3456902 A1 EP 3456902A1
Authority
EP
European Patent Office
Prior art keywords
formwork
claw
hook
shaped
anchoring device
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.)
Granted
Application number
EP18193133.8A
Other languages
German (de)
English (en)
Other versions
EP3456902B1 (fr
Inventor
Willibald Fischer
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.)
FWR Solutions GmbH
Original Assignee
FWR Solutions 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 FWR Solutions GmbH filed Critical FWR Solutions GmbH
Publication of EP3456902A1 publication Critical patent/EP3456902A1/fr
Application granted granted Critical
Publication of EP3456902B1 publication Critical patent/EP3456902B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04G11/365—Stop-end shutterings
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
    • E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/166—Connectors or means for connecting parts for reinforcements the reinforcements running in different directions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/322—Floor structures wholly cast in situ with or without form units or reinforcements with permanent forms for the floor edges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • 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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G2025/045—Shores or struts; Chocks telescopic which telescoping action effected by a lever

Definitions

  • a permanent formwork, in particular a joint formwork, for concrete construction has a substantially concrete-impermeable shuttering wall which is erected on a base, usually a static reinforcement layer consisting of longitudinal and transverse bars.
  • the formwork panel then forms the boundary between a concrete section BA1 to be cast first and a second concrete section BA2 to be cast temporally thereafter.
  • the hydrostatic pressure building up in the BA1 during pouring through the flowable concrete produces a considerable force which the formwork panel tries to displace or tilt away from the BA1 in the direction of the BA2.
  • back anchoring devices are used which clamp the formwork panel against the base.
  • Such a back anchoring device has a pull rod, which is hung at one end with a hook-shaped end in the static reinforcement and pushed with the other end through the formwork panel. At the end of the pull rod protruding there is a thread on which a lock nut is screwed, with which the pull rod is secured against being pulled out of the formwork panel and the return anchoring device is tensioned.
  • This known montverank ceremoniess drove well, but requires the formation of a thread on the tie rod and the screwing a lock nut, which is not always easy in rough construction.
  • a back anchoring device in which a pull rod is suspended by using a wavy curved from a bar bracket in the static reinforcement.
  • the bracket is designed so that the tensile force occurring during concreting in the tie rod is converted by the bracket into a clamping force that compresses crossing longitudinal and transverse bars of the static reinforcement in the hooking area of the bracket.
  • the invention has for its object to provide a permanent formwork for concrete construction, which is functionally improved over the prior art described above.
  • this is based on a formwork according to DE 20 2009 004 804 U1 consisting of a formwork wall and a rod-shaped anchoring means which can be coupled with a first end to the static reinforcement or a ground anchor and with a second end to the formwork wall and fixed by means of an eccentric turnbuckle.
  • This formwork is improved by the characterizing features of claim 1.
  • the two tension rods are easily accessible in the overlap area and can easily be adjusted to the correct length and tensioned with the turnbuckle loosened, without the need for bending rods. This simplifies and improves the handling of the anchoring device in the construction.
  • the formwork according to claim 2 is formed.
  • a second aspect of the invention is based on a formwork according to EP 2 157 260 B1 in which the rear anchoring device has an intermediate member, by means of which it can be suspended with the first end in the static reinforcement such that the tensile force acting on the intermediate member remindverank ceremoniesskraft partially in a transverse and longitudinal bars of the static reinforcement in a crossing region of the rods compressive clamping force is implemented.
  • the intermediate link here is a multi-curved bracket, which is cumbersome to manufacture and handle.
  • the formwork according to the characterizing part of claim 3 is formed.
  • a simple to manufacture and easily hooked into the static reinforcement claw which not only allows a simple and quick hooking the
  • a third aspect of the invention aims at improving the hooking of a hook-shaped tie rod end of the rear anchorage device of a formwork into the formwork board or the static reinforcement.
  • one end of the tie rod of the anchoring device is bent back hook-shaped and can be hung with this end either on a stiffening part of the formwork panel or on the static reinforcement.
  • Formworks are also known in which the tension rods of the rear anchoring device are bent back in a hook-shaped manner at both ends.
  • this problem is reduced or at least reduced by the fact that the anchoring device according to claim 16 is formed.
  • a structurally particularly simple embodiment of the securing element can be found in the patent claim 17. It is designed here as a sheet-metal part with a pair of openings, in which on the one hand the tension rod and on the other hand its bent-over end are inserted.
  • the handling is further simplified if according to claim 19, the securing element is firmly connected to the formwork wall.
  • a particularly high security force can be achieved with the feature according to claim 20, because there the securing forces are applied by a stable U-profile.
  • FIG. 1 illustrated embodiment of a formwork according to the invention for concrete construction has a shuttering wall 1, with a construction gap between a first to be concreted construction section BA1 and then to be concreted concrete section BA2.
  • the formwork wall 1 contains a formwork panel 2, which consists of a partially permeable, but the concrete in the BA1 restrained material, in particular an expanded metal.
  • the formwork panel 2 is stiffened in a known manner on the side facing the BA1 with lattice girders 3 and a connecting rod 4 connecting them and welded to their upper girths.
  • the formwork wall is upright on the static reinforcement 5 of the concrete component to be produced, for example, a foundation plate, set up, which consists of longitudinal bars 6 and transverse bars 7 and is supported on a cleanliness layer 8 by means of spacers 9 in a conventional manner.
  • the static reinforcement 5 could also consist of several layers of longitudinal and transverse bars, but only one layer is shown.
  • a generally designated 10 rubverank ceremoniess
  • the remindverank ceremoniess issued secures the formwork wall 1 against displacement or tilting under the build-up in BA1 concrete pressure.
  • the remindverank ceremoniess issued is coupled in a manner to be described with a, in the drawing, the left end with the static reinforcement 5 and the other, in the drawing right end to the formwork wall 1 in a manner also to be described.
  • the anchoring device 10 has tie rods 11 and 12, which consist of structural steel and, for example, have a diameter of 10 mm.
  • the otherwise straight tension rods 11, 12 each have one end hook-shaped bent back ends 11a, 12a with straight end portions 11b, 12b.
  • the other end portions of the tie rods 11, 12 overlap in the space of the BA1 in an overlap region 13.
  • a commercial eccentric turnbuckle 14 in practice also called "cock frog" so firmly connected that it points in the drawn operating position down.
  • Such a commercially available turnbuckle has a dash-dotted line passage 15 at 15, through which the straight end of the pull rod 12 in the overlapping region 13 is hin manschiebbar.
  • In the passage 15 a not shown in the drawing usually toothed eccentric protrudes under the pressure of a spring, which can be swung out of the passage 15 by means of an operating lever 16.
  • the length of the anchoring device 10 can be adjusted to the desired level and the remindverank ceremoniess liked be biased. This position can then be fixed by releasing the spring-loaded eccentric by means of the operating lever 16.
  • the length adjustment of the rear anchoring device 10 and its bias can thus be accomplished in an easily accessible place and without bending the tension rods. A release of the fixation when shaking the concrete in concreting BA1 is not to be feared, since the eccentric turnbuckle 14 is protected below the tie rods 11, 12.
  • the rear anchoring device 10 is hooked by means of the hook-shaped bent-back end 12a of the tension rod 12 in the stiffening structure 3, 4 of the formwork wall 1, in the illustrated embodiment so that the hook-shaped end 12a comprises the upper flange of one of the stiffening lattice girder 3.
  • FIG. 2 shows the remindverank ceremoniess worn 10 in conjunction with a shuttering wall 1 'for producing an expansion joint.
  • the formwork wall 1 ' contains a formwork panel 2', which contains a parting line insert 18.
  • the rear anchoring device 10 is hooked into the in this case BA2-side stiffening structure 3 ', 4' by means of a formwork panel 2 'passing through the cable loop 19.
  • FIG. 2 illustrated embodiment An inventive feature of the FIG. 2 illustrated embodiment is that the hook-shaped bent-back end 12a of the pull rod 12 is provided with a securing element 20 which prevents spreading of the hook-shaped end 12a under the back anchoring force R.
  • This securing element 20 is in FIG. 2a shown in perspective and consists of a sheet metal part 21, which could be formed as a simple plate, in the preferred embodiment, however, in the FIG. 2a evidently folded like a roof. In the roof legs 21a, 21b it contains spaced apart, with respect to the legs aligned openings 22, 23.
  • the pull rod 12 is inserted after hanging in the cable loop 19 with its straight end through the openings 22 and with its end portion 12b through the openings 23, before the straight end of the pull rod 12 in the eccentric Turnbuckle 14 is introduced.
  • the hook-shaped end 12a can not spread under the effect of the tensile force R, which significantly increases the transmittable return tension force R.
  • FIGS 3, 3a and 3b show variants of the fuse element.
  • the upper part of Figure 3 it consists of a U-profile 24, in the back part 24a, the openings 22, 23 are incorporated.
  • This U-profile 24 is welded to the stiffening structure 3 of an in turn made of expanded metal formwork panel 2 a Häfugenschalung.
  • the insertion of the bent-back end 12a of the tension rod 12 takes place in a manner analogous to that in FIG Figure 2, 2a ,
  • the securing element is designed as a simple sheet metal plate 25 which is welded onto parallel stiffening rods 26 of the stiffening structure 3.
  • FIGS. 3, 3a, 3b have the advantage that the security elements are permanently connected to the formwork.
  • the training as a U-profile 24 has the advantage of particularly high strength and thus a further increase in the transferable
  • this invention consists of a claw 27, which has a J- or L-shaped in side view (see also FIGS. 1 and 2 ).
  • the claw 27 has a substantially rectilinear back portion 28 corresponding to the vertical J or L leg and a leg portion 29 laterally projecting from the lower end of the back portion 28, corresponding to the J-arc or short L-leg.
  • the claw 27 is off a solid, for example, 4 mm thick sheet steel sheet bent, the blank in FIG. 4a is shown.
  • the back part 28 has at its lower end a rounded support surface 30.
  • the opposite, upper end of the back portion 28 is provided with a rounded notch 31.
  • the fillet at 30 corresponds to the diameter of a longitudinal bar 6 of the static reinforcement and the fillet at 31 is adapted to the diameter of the pull bar 11.
  • the back part 28th Between the support surface 30 and the notch 31 is the back part 28th provided with an opening 32 whose diameter is slightly larger than the diameter of the tension rod 11.
  • the back part 28 Due to the production of the claw 27 by bending a flat material, the back part 28 has a U-shaped cross-section with U-legs 33 and a U-web 34. In the latter, the support surface 30, the notch 31 and the opening 32 are formed.
  • the U-legs 33 continue down in laterally projecting from the back part 28 hook parts 35, which form spaced flanks 29 a of the leg portion 29.
  • the hook portions 35 enclose therebetween a distance a, so that in the leg portion 29, a gap 36 is formed, the distance a corresponding width must be at least as large as the diameter of the longitudinal bar. 6
  • the hook parts 35 form on their upper sides securing lugs 39, with which they overlap the cutouts 37 partially so that although a cross bar 7 can be inserted into the receptacle 38, but this is prevented from sliding out of the receptacle upwards.
  • the tension rod 11 of the anchoring device is inserted with its bent-back tension rod part 11b into the opening 32 and rests in the recess 30 in such a way that it and thus the back anchoring force R transmitted by it form an angle ⁇ (cf. FIG. 2 ) forms with the longitudinal axis of the back portion 28.
  • the claw 27 rests on the longitudinal bar 6, which in turn crosses the transverse bar 7, which is supported in the receptacle 38.
  • the at the angle ⁇ at the back portion 28 of the claw 27 at a distance above the support surface 30 attacking back anchoring force tries the claw 27 in FIG. 5 to pivot the support surface 30 as a pivot point to the rear, into the image surface inside. This will get the Hook parts 35 tend to rotate upward, but this is prevented by the abutment of the receptacle 38 on the underside of the transverse bar 7 crossing the longitudinal bar 6.
  • From the re-anchoring force R is thus derived from a first force acting on the supporting surface 30 from above on the longitudinal bar 6, and a second force which presses on the receptacle 38 from below against the transverse bar 7. These two forces together give the clamping force K, which press the longitudinal bar 6 and the cross bar 7 at its intersection so tightly that a mutual displacement of the bars is excluded. The gripping force becomes larger the larger the back anchoring force is.
  • FIG. 6 It can be seen that the hook parts 35 of the claw 27 need not necessarily be approximately parallel to each other. Rather, the blank can after FIG. 4a around the bending line B also by less than 90 °, for example by 60 °, are bent, whereby the claw 27 then the FIG. 6 apparent form receives in which the hook portions 35 between them an angle ⁇ of approximately 60 °.
  • the variant after FIG. 6 is easier to hook into the static reinforcement. Another advantage of this variant is that even with oblique train of the anchoring device on the jaw on this a high, the intersecting reinforcing bars compressive tipping moment arises. Furthermore, this shape of the claw when pouring the concrete better filled with fresh concrete, as it can flow more easily into the larger space between the splayed hook parts.
  • the invention is not limited to the illustrated embodiments.
  • the claw 27 need not be bent from a steel sheet. It could also be milled and drilled from scratch, but this would cause significantly higher production costs.
  • the claw could also be welded together from several parts or produced as a casting.
  • in the formwork instead of a permeable formwork panel and a full-surface panel, such as a closed sheet metal could be used.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP18193133.8A 2017-09-15 2018-09-07 Coffrage perdu pour constructions en béton Active EP3456902B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017216383.6A DE102017216383A1 (de) 2017-09-15 2017-09-15 Verlorene schalung für den betonbau

Publications (2)

Publication Number Publication Date
EP3456902A1 true EP3456902A1 (fr) 2019-03-20
EP3456902B1 EP3456902B1 (fr) 2021-07-07

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EP18193133.8A Active EP3456902B1 (fr) 2017-09-15 2018-09-07 Coffrage perdu pour constructions en béton

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EP (1) EP3456902B1 (fr)
DE (1) DE102017216383A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111779269A (zh) * 2020-06-30 2020-10-16 晟通科技集团有限公司 拉片固定结构
CN113106818A (zh) * 2021-03-03 2021-07-13 中国五冶集团有限公司 一种混凝土浇筑钢模板可调式活动支腿工具的制作方法
CN114411505A (zh) * 2021-12-23 2022-04-29 中国建筑土木建设有限公司 一种可调节式水稳模板支护装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021104831A1 (de) 2021-03-01 2022-09-01 Fwr Solutions Gmbh Dehnfugenschalung mit Spannvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924997A1 (de) * 1978-06-23 1980-01-17 Holdoh Nv Stellatte und klemmorgan aus metall, geeignet zur anwendung bei der stellatte
JPS62160053U (fr) * 1986-03-31 1987-10-12
KR20000065857A (ko) * 1999-04-09 2000-11-15 박준욱 지보공용 받침금구
DE102013220854A1 (de) * 2013-10-15 2015-04-16 Fwr Solutions Gmbh Schalung für den Betonbau

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1434352A (en) * 1919-12-04 1922-10-31 Gordon A Ramsay Building construction clip
GB371839A (en) * 1931-01-27 1932-04-27 Hubert Charles Johnson Support and clip for concrete reinforcements and the like
DE882304C (de) * 1950-09-23 1953-07-06 Hans Ruch Auf einer Seite einer Schalungswand angesetzte Klemmvorrichtung
FI121678B (fi) * 2004-12-09 2011-02-28 Teraespeikko Oy Lävistysraudoite
EP2157260B1 (fr) 2008-08-19 2017-05-10 FWR Solutions GmbH Coffrage doté d'un dispositif d'ancrage arrière
DE202009004804U1 (de) 2009-05-12 2010-10-14 Peca-Verbundtechnik Gmbh Schalungssystem
DE202009015679U1 (de) * 2009-12-01 2011-04-14 Peca - Verbundtechnik Gmbh Abschalelement für Betonplatten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2924997A1 (de) * 1978-06-23 1980-01-17 Holdoh Nv Stellatte und klemmorgan aus metall, geeignet zur anwendung bei der stellatte
JPS62160053U (fr) * 1986-03-31 1987-10-12
KR20000065857A (ko) * 1999-04-09 2000-11-15 박준욱 지보공용 받침금구
DE102013220854A1 (de) * 2013-10-15 2015-04-16 Fwr Solutions Gmbh Schalung für den Betonbau

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111779269A (zh) * 2020-06-30 2020-10-16 晟通科技集团有限公司 拉片固定结构
CN113106818A (zh) * 2021-03-03 2021-07-13 中国五冶集团有限公司 一种混凝土浇筑钢模板可调式活动支腿工具的制作方法
CN113106818B (zh) * 2021-03-03 2022-11-08 中国五冶集团有限公司 一种混凝土浇筑钢模板可调式活动支腿工具的制作方法
CN114411505A (zh) * 2021-12-23 2022-04-29 中国建筑土木建设有限公司 一种可调节式水稳模板支护装置

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Publication number Publication date
DE102017216383A1 (de) 2019-03-21
EP3456902B1 (fr) 2021-07-07

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