EP0717159A1 - Dispositif de liaison des panneaux de coffrage, coffrage composite ainsi obtenu et procédé de fabrication - Google Patents

Dispositif de liaison des panneaux de coffrage, coffrage composite ainsi obtenu et procédé de fabrication Download PDF

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Publication number
EP0717159A1
EP0717159A1 EP95119722A EP95119722A EP0717159A1 EP 0717159 A1 EP0717159 A1 EP 0717159A1 EP 95119722 A EP95119722 A EP 95119722A EP 95119722 A EP95119722 A EP 95119722A EP 0717159 A1 EP0717159 A1 EP 0717159A1
Authority
EP
European Patent Office
Prior art keywords
formwork
connection device
plug
marked
spacer strut
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
EP95119722A
Other languages
German (de)
English (en)
Other versions
EP0717159B1 (fr
Inventor
Walter Stadel
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.)
Robert Klinger GmbH
Original Assignee
Robert Klinger 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 Robert Klinger GmbH filed Critical Robert Klinger GmbH
Publication of EP0717159A1 publication Critical patent/EP0717159A1/fr
Application granted granted Critical
Publication of EP0717159B1 publication Critical patent/EP0717159B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/84—Walls made by casting, pouring, or tamping in situ
    • E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
    • E04B2/8635—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties attached to the inner faces of the forms

Definitions

  • the invention relates to a connecting device of the type described in EP 0 537 727 B1, specifically in the form of the variant from there S.6 Z.55-S.7, Z.2, each with a plant part to be fastened to a formwork part and between the two plant parts a spacer.
  • the installation of the known device for producing a composite formwork is carried out as follows:
  • the two formwork panels, which are usually designed as particle boards, for producing the composite formwork are evenly distributed with system parts on their inner surfaces facing one another in the composite position.
  • the plant parts are screwed with their foot surfaces against the inner surfaces. They are positioned so that mutually assigned system parts of the two formwork panels face each other in pairs and two.
  • the wall to be produced from the composite formwork is usually reinforced using a structural steel mat.
  • the system parts are provided with fixing devices for holding a structural steel mat. This ensures that the structural steel mat occupies a parallel position to the assigned inner surface of the formwork panel.
  • the structural steel mat is cast into the wall material at a sufficient distance from the wall surface parallel to it.
  • each spacer strut forms a device according to the invention together with a plant part attached to its two ends.
  • the two system parts are attached to the spacer strut in their axial direction.
  • the connecting devices holding a composite formwork are very strongly subjected to tensile stress in their joining direction in the opposite direction when pouring and in many cases also when the concrete is solidified by vibrators.
  • This train is taken up by the plug connection between the two parts of the system and by the spacer strut located between them.
  • the plug connections are designed as spring catches, which must absorb the mentioned tensile forces without releasing the catch connection.
  • a tensile strength of the locking connections of at least 830 kg is required.
  • the two parts of the system and the spacer strut connecting them are made in one piece from plastic, and the tensile forces acting on the integrally molded spring snap connections create a considerable material and shaping problem.
  • the pressure exerted by the joining press must be sufficient to bring the spring-loaded locking mechanism, which is equipped with high tensile strength, into place.
  • the spacer of the known device is tubular.
  • the tube shape that is important for stability is, however, weakened in the long term, especially at the joint ends of the spacer strut, by axial incisions which enable the spring tongues attached there to be radially compressed.
  • the pipe jacket must also be pierced by sufficiently large openings to ensure that the pipe interior is completely filled when the wall is poured. Otherwise voids would appear in the wall made of wall material, which absolutely must be avoided.
  • the invention has for its object to avoid the disadvantages described in a device of the type mentioned.
  • This object is solved by claim 1.
  • a composite formwork equipped with connecting devices designed according to the invention is no longer installed in one operation. This eliminates the need for a very expensive joining press. Rather, the formwork panels of the composite unit are initially Equipped with system parts on their inner surfaces facing one another in the composite position in a manner known per se from EP 0 537 727 B1.
  • a structural steel mat is then optionally attached to the system parts in a parallel position to the inner wall of a formwork panel. Then the formwork panels are brought in parallel to each other, the distance between their inner surfaces corresponding to the wall thickness of the wall to be cast.
  • the spacer struts are then pushed into their plug-in connection position from the side, for example by a robot arm, into the space between the two formwork panels.
  • This plug connection process of each spacer strut can be accomplished in succession by a single robot arm.
  • the mechanical effort is considerably less than that of a joining press.
  • the holding forces for maintaining the plug-in position are relatively low, so that the joining forces to be overcome by the mechanical device are also limited.
  • the considerable tensile forces to be applied by the connecting device to the formwork panels of the composite formwork are not effective in the joining direction, but in particular approximately at right angles thereto and can accordingly be absorbed in a simple manner according to claim 2 or 3.
  • a reinforcement according to claim 8-13 which usually consists of a structural steel mat.
  • a structural steel mat held in the usual standard dimensions can be fixed in its desired position by simply clipping onto a system part relative to the formwork panel parallel to it.
  • Structural steel mats usually having the shape of a square grid are generally introduced into the wall to be cast in such a way that their wire rods which frame the intermediate square passages are aligned either horizontally or vertically.
  • the system parts are fixed in a corresponding position on the inner surfaces of the formwork panels.
  • the feature of claim 13 is of importance to, so that the insertion direction for the joining process of the spacer strut is determined. It takes place at an angle of approximately 45 ° to the vertical with upright formwork panels from top to bottom.
  • the further invention is directed to an assembly method of a composite formwork according to claim 17 and to the composite formwork itself according to claim 18.
  • the plant part 1 has - but not necessarily - about the outer shape of a truncated cone with the foot surface 2 and a top surface 3. It is a plastic injection-molded part, which is hollow in its interior because it essentially has a constant wall thickness 4. This creates a bell shape in cross section (FIGS. 2, 3) with a cavity 5 lying below the top surface 3.
  • the plant part 1 is mounted with its base 2 on the inside of the associated formwork wall (not shown), in particular screwed tight.
  • the annular flange 6 forming the foot surface 2 has a plurality of fastening holes 7 distributed uniformly over its circumference, the axes of which run approximately parallel to the central longitudinal axis 8, which at the same time forms the central longitudinal axis of the spacer strut 9, which in the assembled state is normal or perpendicular to the surface of the two formwork walls that laterally delimit the formwork unit.
  • an insertion guide 10 as a receptacle for the insertion shoes 11, 12 arranged at the two ends of the spacer strut 8.
  • the form-fitting insertion of a shoe 11 or 12 into an insertion guide 10 takes place in the insertion direction 13.
  • the shoe 11 or 12 and the guide 10 act together in the manner of a dovetail connection, although a trapezoidal cross-sectional shape is not essential.
  • the cross-sectional shape of the insertion groove 10 can be seen particularly clearly from FIG. 3.
  • the shape of the groove heads 15 (FIG. 3) acting on the top surfaces 14 of the shoes 11, 12 is such that the shoes 11, 12 are pressed firmly with their sole surfaces 16 against the groove bottom 17.
  • a spring catch projection 18 is incorporated, which rises in the insertion direction 13 in a ramp-like manner from the head surface with its catch end 19 beyond the head surface 3 in the axial direction 8.
  • the spring catch projection is pressed into the plane of the head surface 3.
  • the latching end 19 is released from the action by the sole surface 16 of the shoe 11, 12 and the latching tongue springs upwards out of the head surface 3 and the latching end 19 lies thereby behind the heel end 22 of the respective shoe 11, 12 and secures it captively in its insertion end position.
  • Fig. 1 shows the system part with an orientation of the insertion guide 10 or an insertion direction 13 in which the latching tongue 18 is arranged in the lower left quadrant and the insertion direction 13 is at an angle of approximately 45 ° to the upper right quadrant. This is approximately the rotational position that the system part 1 assumes in a form mounted on a formwork wall.
  • This orientation of the insertion direction of the system part 1 ensures that when the fully assembled formwork unit is lifted by a crane, the weight load on the fixed groove side walls bounding by the insertion guide 10 or on the end stop, but not on the spring catch projection or the latching tongue 18, is loaded.
  • the lateral surface of the system parts contains latching elements 23 suitable for snap-in connection or for the adhesive insert fixing of reinforcing steel meshes 23.
  • the latching elements 23 are formed by spring tongues 24 which spring apart when the strut of a reinforcement mat is inserted and thus a special fixation by wires or the like. spare.
  • the locking elements 23 are arranged in relation to the axial direction 8 at a height level which is positioned below the head surface 3, that is to say between the head surface 3 and the foot surface 2 of the contact part 1.
  • the reinforcement mat mounted on the system part 1 does not hinder the subsequent horizontal insertion of the spacer struts 9 with their insertion shoes 11, 12 into the respectively assigned insertion guide 10.
  • This horizontal direction or the "horizontal plane” runs in the insertion direction 13 or the "horizontal plane” mentioned contains the Insertion direction 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
EP95119722A 1994-12-15 1995-12-14 Dispositif de liaison des panneaux de coffrage, coffrage composite ainsi obtenu et procédé de fabrication Expired - Lifetime EP0717159B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420755U 1994-12-15
DE9420755 1994-12-15

Publications (2)

Publication Number Publication Date
EP0717159A1 true EP0717159A1 (fr) 1996-06-19
EP0717159B1 EP0717159B1 (fr) 1999-02-10

Family

ID=6917947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119722A Expired - Lifetime EP0717159B1 (fr) 1994-12-15 1995-12-14 Dispositif de liaison des panneaux de coffrage, coffrage composite ainsi obtenu et procédé de fabrication

Country Status (4)

Country Link
EP (1) EP0717159B1 (fr)
AT (1) ATE176700T1 (fr)
DE (1) DE59505087D1 (fr)
ES (1) ES2129743T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001626A1 (fr) * 1997-07-04 1999-01-14 Formtech International Corporation Ensemble d'attaches pour un systeme de coffrage de murs
WO1999007958A1 (fr) 1997-08-05 1999-02-18 Nemis Establishment Espaceur
DE19946320B4 (de) * 1999-09-28 2012-08-09 Max Bögl Bauunternehmung GmbH & Co. KG Doppelwand
CN111168837A (zh) * 2020-02-20 2020-05-19 上海三足鼎新材料股份有限公司 钢筋间隔件及应用该钢筋间隔件的pc墙生产方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698947A (en) * 1986-11-13 1987-10-13 Mckay Harry Concrete wall form tie system
CH669235A5 (en) * 1984-12-19 1989-02-28 Paul Wuhrmann Concrete wall erection method - uses shuttering halves with couplings engaged by pushing together and left on site
EP0537727A1 (fr) * 1991-10-18 1993-04-21 Kunz GmbH & Co. Dispositif d'assemblage pour panneaux et/ou armatures en fer d'un coffrage composite
DE9314513U1 (de) * 1993-09-24 1993-12-02 Bauelemente Heilig GmbH, 73540 Heubach Verbindungsvorrichtung für einander gegenüberliegende Platten einer verlorenen Schalung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH669235A5 (en) * 1984-12-19 1989-02-28 Paul Wuhrmann Concrete wall erection method - uses shuttering halves with couplings engaged by pushing together and left on site
US4698947A (en) * 1986-11-13 1987-10-13 Mckay Harry Concrete wall form tie system
EP0537727A1 (fr) * 1991-10-18 1993-04-21 Kunz GmbH & Co. Dispositif d'assemblage pour panneaux et/ou armatures en fer d'un coffrage composite
EP0537727B1 (fr) 1991-10-18 1994-06-29 Kunz GmbH & Co. Dispositif d'assemblage pour panneaux et/ou armatures en fer d'un coffrage composite
DE9314513U1 (de) * 1993-09-24 1993-12-02 Bauelemente Heilig GmbH, 73540 Heubach Verbindungsvorrichtung für einander gegenüberliegende Platten einer verlorenen Schalung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001626A1 (fr) * 1997-07-04 1999-01-14 Formtech International Corporation Ensemble d'attaches pour un systeme de coffrage de murs
WO1999007958A1 (fr) 1997-08-05 1999-02-18 Nemis Establishment Espaceur
DE19946320B4 (de) * 1999-09-28 2012-08-09 Max Bögl Bauunternehmung GmbH & Co. KG Doppelwand
CN111168837A (zh) * 2020-02-20 2020-05-19 上海三足鼎新材料股份有限公司 钢筋间隔件及应用该钢筋间隔件的pc墙生产方法

Also Published As

Publication number Publication date
ES2129743T3 (es) 1999-06-16
DE59505087D1 (de) 1999-03-25
ATE176700T1 (de) 1999-02-15
EP0717159B1 (fr) 1999-02-10

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