EP1702120A1 - Systeme de coffrage - Google Patents

Systeme de coffrage

Info

Publication number
EP1702120A1
EP1702120A1 EP04803647A EP04803647A EP1702120A1 EP 1702120 A1 EP1702120 A1 EP 1702120A1 EP 04803647 A EP04803647 A EP 04803647A EP 04803647 A EP04803647 A EP 04803647A EP 1702120 A1 EP1702120 A1 EP 1702120A1
Authority
EP
European Patent Office
Prior art keywords
formwork
elements
bolt
locking
bolt element
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
EP04803647A
Other languages
German (de)
English (en)
Other versions
EP1702120B1 (fr
Inventor
Artur Schwörer
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.)
Peri GmbH
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
Publication of EP1702120A1 publication Critical patent/EP1702120A1/fr
Application granted granted Critical
Publication of EP1702120B1 publication Critical patent/EP1702120B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
    • E04G17/075—Tying means, the tensional elements of which are fastened or tensioned by other means
    • E04G17/0751—One-piece elements
    • E04G17/0752—One-piece elements fully recoverable

Definitions

  • the invention relates to a formwork system with formwork elements having mutually opposite formwork inner surfaces, which can be connected to one another at a distance from one another by means of formwork anchors, a formwork anchor consisting of a bolt element and two locking elements, which in the two face away from each other
  • End regions of the bolt element can be coupled to it and are designed to transmit tensile forces from the formwork elements to the bolt element.
  • Formwork systems of this type are known from the prior art in various embodiments. They are used on construction sites of various sizes in order to define limited volumes in the construction of reinforced concrete unfinished buildings by formwork areas or by internal and external formwork, which are then filled with liquid concrete. After the concrete has solidified, the formwork elements are then removed again, whereupon they can generally be used again for the construction of further formwork.
  • walls, columns, foundations, shafts and the like can be made of concrete and reinforced concrete, for example.
  • a formwork anchor is formed by a bolt element and two locking elements, the latter, as already mentioned, being suitable for transmitting tensile forces from the formwork elements to the bolt element.
  • An object of the invention is to further develop a formwork system of the type mentioned at the outset in such a way that the inner and outer formwork are reliably prevented from moving towards one another, particularly when pouring concrete.
  • these coupling elements means that the locking elements are not only for the transmission of tensile forces, but also for the transmission of compressive forces from the formwork elements to the bolt element. ment suitable.
  • the distance defined by the formwork anchors according to the invention between the mutually facing inner formwork surfaces of the inner formwork and outer formwork is fixed in both directions, so that this distance cannot increase or decrease when pouring concrete or when any other forces are applied. This ensures that the concrete walls to be created have the desired thickness specified by the formwork anchors in all areas.
  • the mutually opposite formwork inner surfaces of the inner formwork and the outer formwork are each formed by a composite of individual formwork elements.
  • Each assembly of formwork elements has in particular circular anchor holes for receiving the bolt elements of the formwork anchors.
  • These anchor holes can be provided, for example, in the area of the connection points of adjacent, adjacent formwork elements, so that each formwork element has, for example, semicircular anchor half-holes in its edge regions, which together with semicircular anchor holes of an adjacent formwork element form complete anchor holes.
  • the locking elements can each have a tensile force transmission surface which interacts with the respective outside of the formwork elements.
  • simple transfer of tensile force from the formwork elements to the locking elements can be achieved by positioning the locking elements on the outer sides of the formwork elements in such a way that their tensile force transmission surfaces lie flat against the outer sides mentioned.
  • the areas of the outer sides of the formwork elements surrounding the anchor holes must then interact with the Tractive force transmission surfaces of the locking elements can be formed, which is made possible in particular by sufficient stability of the areas mentioned.
  • undercuts are provided on the outer sides of the formwork elements, which can be brought into operative connection with pressure force transmission surfaces provided on the coupling elements of the locking elements.
  • These undercuts can, for example, be provided inexpensively in the course of an extrusion, rolling or rolling process on profile elements which are used as edge regions of the formwork elements.
  • the undercuts extend over at least substantially the entire height of the formwork elements, so that the aforementioned operative connection between the undercuts and the coupling elements is fundamentally possible in the entire edge region of the formwork elements wherever anchor holes are provided.
  • the coupling elements provided on the locking elements can be hook-shaped in cross section, so that they can be hooked to the undercuts of the formwork elements. In this way, a particularly simple operative connection between coupling elements and formwork elements can be established in a short time.
  • the locking element or the bolt element could also be screwed to the formwork element.
  • the corresponding thread would then transmit both tensile and compressive forces from the formwork elements to the bolt element.
  • the thread present on the part of the locking elements or of the bolt element would then, in this case, inter alia, the coupling element according to the invention for transmission. form pressure forces from the formwork elements to the bolt element.
  • the locking elements preferably have a substantially cuboid housing, to which the coupling element is molded.
  • This cuboid housing including the coupling element can be produced by the meter, for example by means of an extrusion, rolling or rolling process, from which the individual housings can then be cut to the desired length. In the cutting areas, the housings produced in the manner mentioned are then open on two opposite sides.
  • one locking element is non-detachably connected to the bolt element, while the other locking element is detachably connected to the bolt element.
  • the locking element which is permanently connected to the bolt element, can be gripped and the bolt element can be inserted through the anchor holes of the inner and outer formwork. The other locking element can then be attached to the end of the bolt element opposite the locking element mentioned.
  • the bolt element is mounted rotatably about its longitudinal axis in the locking element firmly connected to it.
  • the bolt element can protrude on the side facing away from the tensile force transmission surface from the locking element or housing firmly connected to it.
  • this protruding area there is then preferably a contact surface for a tool on the bolt element intended.
  • this protruding area is designed as a square or hexagon, so that it can be rotated in a simple manner about the longitudinal axis of the bolt element by means of a tool.
  • the bolt element At its end area facing away from the locking element firmly connected to it, the bolt element can be provided with a thread for screwing into the locking element which can be detached from the bolt element.
  • the bolt element can be gripped on its locking element firmly connected to it and inserted through the two anchor holes of the inner and outer formwork, whereupon by turning the tool engagement surface around the longitudinal axis of the bolt element by hand or by means of a tool, said screwing in Thread in the detachable locking element from the bolt element can be effected.
  • the bolt element is preferably conical, the cross section of the bolt element decreasing in particular with increasing distance from the locking element firmly connected to it. This ensures that the bolt element can be easily pulled out of the anchor holes or the solidified concrete after the concrete has solidified.
  • the locking element that can be detached from the bolt element is provided with a threaded sleeve into which the bolt element can be screwed, the outer diameter of the threaded sleeve being approximately dimensioned like the inner diameter of the anchor holes formed in the formwork elements.
  • the length of the section of the threaded sleeve protruding from the locking element is preferably dimensioned such that it extends at least over the entire thickness of a formwork element interacting with the locking element. In this way, the threaded sleeve with the inserted into it screwed bolt element close the anchor hole of a formwork element in the area of the inner formwork surface in such a way that no liquid concrete can enter the anchor holes and thus exit the formwork.
  • This sealing function of the threaded sleeve is particularly relevant because, as already mentioned, the thread is provided on the thinner end region of the conical bolt element, so that there would be a gap between the edge of the anchor hole and the bolt element without a threaded sleeve. However, this space is filled by the threaded sleeve described.
  • Said threaded sleeve can be permanently connected to the locking element assigned to it, which keeps the number of parts to be handled small.
  • a locking block can be held in the housings of the locking elements, which is releasably connectable or firmly connected to the bolt element.
  • the bolt element In the case of a fixed connection between the locking block and the bolt element, the bolt element is preferably rotatably mounted in the locking block, but cannot be pulled out of the locking block.
  • the bolt element In the case of a detachable connection between the bolt element and the locking block, the bolt element can either be screwed directly into the locking block or into a threaded sleeve of the type already explained which is firmly connected to it.
  • the housings of the locking elements can be provided on mutually opposite sides with aligned bolt holes through which the bolt element can be inserted.
  • These bolt holes are necessary, on the one hand, to connect the bolt element with the locking blocks mentioned, which are located inside the housing. to be able to pel.
  • the bolt holes mentioned are necessary in order to allow a bolt element with its tool engagement surface to protrude from the side of the housing facing away from the formwork element.
  • the bolt holes each have the shape of a curved elongated hole, in which the bolt element and / or the threaded sleeve can be displaced.
  • the housing can ultimately be moved relative to the bolt element or to the threaded sleeve after the bolt element and threaded sleeve have been inserted into the anchor holes of the formwork elements, for example to cause the coupling elements provided on the housing to get caught with undercuts of the formwork elements.
  • FIG. 1 is a three-dimensional view of a formwork anchor that can be used according to the invention.
  • Fig. 2 shows a cross section through a formwork anchor according to FIG. 1, the formwork anchor with formwork elements one
  • Fig. 1 shows an anchor bolt 1, which is coupled in its two mutually facing end regions with a locking element 2, 3.
  • Both locking elements 2, 3 each consist of a housing 4, 5, with a locking block 6, 7 being arranged in each housing 4, 5.
  • the housings 4, 5 are produced by the meter by means of an extrusion, rolling or rolling process, from which they are cut to the desired length along the cut surfaces 8. The consequence of this is that the housings 4, 5 are open at the end in the area of the cut surfaces 8, so that the locking blocks 6, 7 can be inserted into the housings 4, 5 through these open sides.
  • a coupling element 9, 10 for transferring compressive forces from formwork elements to the bolt element 1 is formed on each of the housings 4, 5, these coupling elements 9, 10 having a constant cross section over the entire length of the housings 4, 5, so that the coupling elements 9, 10 can be produced simultaneously with the housings 4, 5 by an extrusion, rolling or rolling process.
  • the coupling elements 9, 10 are hook-shaped in cross section, so that they can be hooked with corresponding undercuts of the formwork elements (see FIG. 2).
  • the orientation of the two coupling elements 9, 10 is chosen such that they extend in a hook shape in opposite directions.
  • the bolt element 1 is made from a solid metallic material in particular and has a conical shape that tapers with increasing distance from the locking element 2. Furthermore, the bolt element 1 in the locking block 6 of the locking element 2 is non-detachable, but rotatably, whereby it protrudes from the housing 4 in a direction facing away from the locking element 3. This protruding area of the bolt element 1 is designed as a hexagon 11, via which the bolt element 1 can be rotated about its longitudinal axis relative to the locking elements 2, 3 by hand or by means of a tool.
  • the locking block 7 accommodated in the housing 5 is firmly coupled to a threaded sleeve 12, which projects out of the housing 5 in the direction of the locking element 2.
  • the threaded sleeve 12 is provided on the inside with a thread into which the bolt element 1 can be screwed with its end facing away from the locking element 2.
  • Each of the two housings 4, 5 has a bolt hole 13, 14 in opposite housing sides, each of which has the shape of a curved elongated hole.
  • the two bolt holes 13, 14 of each housing 4, 5 are aligned with one another. In Fig. 1 only one bolt hole 13, 14 per housing 4, 5 can be seen due to the selected perspective.
  • the bolt element 1 extends through both bolt holes 13, whereas in the locking element 3 the threaded sleeve 12 extends through the bolt hole 14 facing the locking element 2 and not visible in FIG. 1.
  • the other, in Fig. 1st visible bolt hole 14 allows the passage of the bolt element end 15 when it is screwed far enough into the threaded sleeve 12.
  • the bolt holes 13, 14 are curved as elongated holes in such a way that their upper regions are closer to the sides of the housings 4, 5 provided with the coupling elements 9, 10 than their lower regions.
  • FIG. 2 shows a section through a formwork anchor according to FIG. 1, this formwork anchor according to FIG. 2 now being connected to formwork elements of an inner and an outer formwork.
  • the same reference numerals are used in FIG. 2 as in FIG. 1.
  • FIG. 2 accordingly shows two formwork elements 16 of an inner formwork coupled to one another and two formwork elements 17 of an outer formwork coupled to one another.
  • an anchor hole 18 is provided in the inner formwork and in the outer formwork, which extends completely through the inner and outer formwork and runs perpendicular to the inner formwork surfaces 19, 20 of the inner and outer formwork.
  • the inner and outer formwork each have on their outer side facing away from the inner formwork surface 19, 20 an abutment surface which extends parallel to the inner formwork surface 19, 20 and against which tensile force transmission surfaces 21, 22 of the housings 4, 5 rest.
  • the tensile force transmission surfaces 21, 22 are located on the mutually facing sides of the housings 4, 5.
  • the formwork elements 16, 17 are each provided with an undercut 23, 24 on their sides facing away from the inner formwork surfaces 19, 20, which undercut by the hook-shaped coupling elements 9, 10, so that there is ultimately a hooking between the coupling elements 9 and 10 and the undercuts 23 and 24 respectively.
  • Those areas of the coupling elements 9, 10 that are in contact with the undercuts 23, 24 form the already mentioned pressure force transmission surfaces of the coupling elements 9, 10.
  • the bolt element 1 is fixed in the locking block 6 by means of a snap ring 26 such that it can be rotated about its longitudinal axis, but cannot be detached from the locking block 6.
  • the bolt element 1 has at its end facing away from the hexagon 11 an external thread 25 which is screwed into a corresponding internal thread of the threaded sleeve 12.
  • the threaded sections of said external thread 25 and the internal thread of the threaded sleeve 12 extend exclusively in the area of the housing 5; in the exemplary embodiment shown, they therefore do not extend into the area that comes to lie within the formwork elements 17.
  • the length of the threaded sleeve 12 is dimensioned such that it extends completely through the formwork elements 17, so that the anchor hole 18 formed in the formwork elements 17 through the wind sleeve 12 and the bolt element 1 is closed and sealed in a sufficient manner.
  • FIG. 2 shows that by the interaction of the tensile force transmission surfaces 21, 22 with the outer sides of the formwork elements 16, 17, tensile forces can be transmitted from the formwork elements 16, 17 via the housings 4, 5 to the bolt element 1.
  • compressive forces can be transmitted from the formwork elements 16, 17 to the bolt element 1 via the housings 4, 5, since the coupling elements 9, 10 are hooked to the undercuts 23, 24 in the region of their compressive force transmission surfaces.
  • FIGS. 4a-c describe how a formwork anchor according to FIGS. 1 and 2 can be connected to a formwork according to FIG. 2.
  • FIGS 3a-4c each show a section through formwork elements 16, 17 corresponding to FIG. 2 and through the corresponding elements of the formwork anchor, including a plan view of the housings 4, 5 of the locking elements 2, 3 in the direction of the arrows A.
  • FIGS 3a-c each show top views of the housing 5
  • FIGS. 4a-c each show top views of the housing 4.
  • the locking element 3 (FIG. 1) is gripped on its housing 5 and inserted with the threaded sleeve 12 first into the anchor hole 18 which is formed in the formwork elements 17. During this insertion, it is irrelevant at which position of the bolt hole 14 the threaded sleeve 12 which is displaceable in this bolt hole 14 is located.
  • the threaded sleeve 12 can be located in the upper region of the bolt hole 14, as shown in FIG. 3a.
  • the housing 5 must be lifted relative to the threaded sleeve 12 in such a way that the threaded sleeve 12 moves downward within the bolt hole 14 emotional. Due to the curvature of the bolt hole 14, this movement ensures that the coupling element 10 moves in the direction of the arrow B according to FIG. 3b, so that it does not collide with the undercut 24 when the threaded sleeve 12 is pushed further into the anchor hole 18. Accordingly, in the position of the threaded sleeve 12 in the bolt hole 14, the coupling element 10 can be moved over the undercut 24, as can be seen from FIG.
  • the housing 5 is then lowered again, so that the threaded sleeve 12 moves into the bolt hole 14 in its upper region.
  • This interlocking means that the housing 5 with the threaded sleeve 12 can no longer be moved out of the anchor hole 18 in the opposite direction of the arrow A.
  • the bolt element 1 which is firmly connected to the locking element 2 (FIG. 1) is now through the anchor hole 18 of the formwork element. elements 16 inserted, with this process, as in FIG. 3a, again it does not matter at which point of the bolt hole 13 formed in the housing 4 the bolt element 11 is located.
  • the bolt element 1 is located in the area of the upper end of the bolt hole 13.
  • the bolt element 1 is now inserted into the anchor hole 18 or screwed into the threaded sleeve 12 until the coupling element 9 would collide with the undercut 23 of the formwork elements 16. 4b, the housing 4 is then raised in such a way that the bolt element 1 is moved into the lower region of the curved bolt hole 13, as a result of which a movement of the housing 4 in the direction of arrow D is achieved analogously to FIG. In this position, the coupling element 9 can be moved beyond the undercut 23 by continuing to screw it into the threaded sleeve 12 until the bolt element 1 is completely screwed into the threaded sleeve 12 via the hexagon 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

L'invention concerne un système de coffrage ayant des éléments de coffrage opposés présentant des surfaces internes de coffrage et reliés de manière espacée par des tirants de coffrage. Un tirant de coffrage est constitué d'un élément boulon et de deux éléments d'arrêt qui sont couplés à l'élément boulon aux deux zones terminales opposées de cet élément boulon et qui sont destinés à la transmission de forces de traction des éléments de coffrage à l'élément boulon. A cette occasion, les éléments d'arrêt présentent des éléments de couplage pour la transmission de forces de pression des éléments de coffrage à l'élément boulon.
EP04803647A 2004-01-05 2004-12-08 Systeme de coffrage Active EP1702120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004001091A DE102004001091A1 (de) 2004-01-05 2004-01-05 Schalungssystem
PCT/EP2004/013981 WO2005066434A1 (fr) 2004-01-05 2004-12-08 Systeme de coffrage

Publications (2)

Publication Number Publication Date
EP1702120A1 true EP1702120A1 (fr) 2006-09-20
EP1702120B1 EP1702120B1 (fr) 2011-05-25

Family

ID=34716303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04803647A Active EP1702120B1 (fr) 2004-01-05 2004-12-08 Systeme de coffrage

Country Status (6)

Country Link
US (1) US8272620B2 (fr)
EP (1) EP1702120B1 (fr)
CA (1) CA2553961C (fr)
DE (1) DE102004001091A1 (fr)
ES (1) ES2367939T3 (fr)
WO (1) WO2005066434A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005022335A1 (de) * 2005-05-13 2006-11-16 Doka Industrie Gmbh Schalungsanker sowie Verfahren zum Verankern von Schalungselementen und Verfahren zum Lösen eines Schlalungsankers
CA2854615C (fr) 2010-11-05 2017-01-24 Lightweight Labs, Llc Systeme et procede de traitement et de consolidation thermiques
US20120144887A1 (en) * 2010-12-13 2012-06-14 Accelergy Corporation Integrated Coal To Liquids Process And System With Co2 Mitigation Using Algal Biomass
DE102012212607A1 (de) * 2012-07-18 2014-02-06 Harsco Infrastructure Services Gmbh Befestigbares Ankersystem einer Wandschalung und Verfahren
KR101641335B1 (ko) * 2015-04-30 2016-07-20 서보산업 주식회사 우드 갱폼 및 이를 이용한 콘크리트 구조물 시공 방법
EP3156561A1 (fr) * 2015-07-03 2017-04-19 MEVA Schalungs-Systeme GmbH Élément de coffrage
EP3951116B1 (fr) * 2020-08-04 2024-01-31 MEVA Schalungs-Systeme GmbH Tirant de coffrage

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US2992468A (en) * 1961-07-18 Wall form tie rod
US913538A (en) * 1906-12-22 1909-02-23 David Morgan Apparatus for use in building structures of concrete or other plastic material.
US913583A (en) * 1907-09-13 1909-02-23 Gen Electric Motorman's valve.
US1937109A (en) * 1933-06-30 1933-11-28 Samuel S Colt Retaining means for concrete pouring forms
US2584822A (en) * 1947-01-29 1952-02-05 Symons Clamp And Mfg Company Wall form spreader tie
US2620542A (en) * 1949-10-17 1952-12-09 Flexiform Construction Company Concrete form
US2583962A (en) * 1949-11-25 1952-01-29 Herman P Neptune Form clamp
US2859503A (en) * 1953-03-16 1958-11-11 Victor E O Hennig Concrete form tie-tensioning means
US3198476A (en) * 1962-04-25 1965-08-03 Wilfred A Smith Tapered tie bolt
US3167842A (en) * 1963-06-06 1965-02-02 Kwik Lock Forms Co Spreader bar and tie rod arrangement for concrete wall forms
DE2408558A1 (de) 1974-02-22 1975-08-28 Peri Werk Schwoerer Kg Artur Fuer betonschalungen bestimmter abstandshalter
US4159097A (en) * 1976-09-13 1979-06-26 Strickland Systems Inc. Tie having integrally molded sleeve
GB2057042B (en) * 1979-08-29 1983-11-16 Tower Scaffolding Ltd Shuttering
AP100A (en) * 1989-05-24 1990-10-09 Hendrik Petrus Botes Shuttering for use in building construction.
DE19754366C2 (de) 1997-12-08 2000-04-06 Peri Gmbh Betonschalung
TWI247842B (en) * 2001-11-26 2006-01-21 Fukuvi Chem Ind Co Form panel for placing concrete
US6935607B2 (en) * 2002-10-23 2005-08-30 Western Forms, Inc. Forming panel with extruded elongated threaded slot for receiving threaded attachment members
US6951329B2 (en) * 2003-01-07 2005-10-04 Symons Corporation Concrete wall form with flexible tie system
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Also Published As

Publication number Publication date
ES2367939T3 (es) 2011-11-11
EP1702120B1 (fr) 2011-05-25
CA2553961C (fr) 2012-01-24
CA2553961A1 (fr) 2005-07-21
WO2005066434A1 (fr) 2005-07-21
US8272620B2 (en) 2012-09-25
US20080023622A1 (en) 2008-01-31
DE102004001091A1 (de) 2005-08-04

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