EP0869233A1 - Schalungsträger - Google Patents

Schalungsträger Download PDF

Info

Publication number
EP0869233A1
EP0869233A1 EP98500084A EP98500084A EP0869233A1 EP 0869233 A1 EP0869233 A1 EP 0869233A1 EP 98500084 A EP98500084 A EP 98500084A EP 98500084 A EP98500084 A EP 98500084A EP 0869233 A1 EP0869233 A1 EP 0869233A1
Authority
EP
European Patent Office
Prior art keywords
joist
pin
greater thickness
jut
seat
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
EP98500084A
Other languages
English (en)
French (fr)
Other versions
EP0869233B1 (de
Inventor
Pedro Xammar
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.)
Encofrados J Alsina SA
Original Assignee
Encofrados J Alsina SA
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
Priority claimed from ES9700976U external-priority patent/ES1036962Y/es
Priority claimed from ES9700978U external-priority patent/ES1036964Y/es
Application filed by Encofrados J Alsina SA filed Critical Encofrados J Alsina SA
Publication of EP0869233A1 publication Critical patent/EP0869233A1/de
Application granted granted Critical
Publication of EP0869233B1 publication Critical patent/EP0869233B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E04G11/48—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
    • 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
    • E04G11/52—Girders, beams, or the like as supporting members for forms of several units arranged one after another
    • 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
    • E04G2011/505—Girders, beams, or the like as supporting members for forms with nailable or screwable inserts

Definitions

  • the present invention refers to a joist for formwork, which serves for the supporting of some panels that receive the mass of concrete, the panels leaning directly on the joist or on some swivels placed next to it.
  • the known formwork systems comprise joists are known for forming horizontal surfaces (floors or roofs).
  • the known formwork systems comprise a number of joists, some of which comprise swivels placed next to them. Wooden panels are placed on these swivels or directly on the joist, to receive the mass of concrete.
  • the structure of the formwork is withdrawn by means of a plurality of removable jaws provided in the swivels. When these jaws are withdrawn, the swivels fall, the wooden panels being removed thereafter.
  • the known joists have the drawback that they are difficult to disassemble, because some concrete always remains between the joist and the panels. In the case of the joists with trapezial cross section, this problem is smaller. However, they allow the accumulation of concrete.
  • the known joists are difficult to transport due to their dimensions and weight, and because they can not be held easily.
  • Joists are also known that present at its ends means to couple lengthwise several of them, to adapt them to the different extensions of the concrete floors; by these means of longitudinal coupling, each one of the joists leans on another at one end and it supports a third joist at the opposed end.
  • the coupling means of the joists known up to now consist in two horizontal flanges that protrude each one from an end of the joist: the flange of one end of the joist has welded to it a vertical pin directed downwardly and the flange at the other end presents a complementary hole, so that in order to join two joists the pin of a joist is introduced in the hole of the adjacent joist.
  • the support between two adjacent joists is limited to a flange that protrudes in horizontal direction from the end of the joist, so that the joint is not very resistant.
  • the joist for formwork of the invention is characterized in that its cross section comprises a part of more thickness and a part of smaller thickness, forming a T-shaped profile.
  • a joist is obtained that facilitates the disassembly, because it has only a small part of its vertical wall in contact with the panel in the moment of the disassembly. Also, it prevents the concrete that there is between the joist and the panel to slip by the whole vertical wall of the joist, soiling and producing concrete accumulations that difficult the disassembly after using the joist several times.
  • the external wall of the part of greater thickness of the cross section of the joist forms an acute, right or obtuse angle with the joining portion between the part of more thickness and the part of smaller thickness. This way, a configuration is obtained that allows the operator to hold the joist, facilitating his placement and transport.
  • the joist comprises in its interior a profile, preferably of wood, in the area of greater thickness of the cross section of the joist, being this uncovered panel located in its upper part.
  • This joist type will only be used when the panel leans directly on it and it is necessary to nail it.
  • this joist type with a profile in its interior allows not to increase its height, preventing that the nails contact the steel of the bottom of the joist. Also, it allows that the panels lean on perfectly in the foreseen way and that the profile is protected against the blows.
  • the joist for formwork of the present invention is also characterized in that it comprises means for its coupling to the joists adjacent to it in longitudinal direction, constituted by a first coupling element, provided at one end of the joist and provided with a hole, and a second coupling element, provided at the other end of the joist and provided with a pin.
  • said first coupling element comprises a hollow seat that presents two lateral faces, constituted by extensions of the lateral walls of the joist, and a upper face, in which the mentioned hole is formed.
  • This coupling element does not undergo the risk of bending, so that the joist is more reliable and more durable, and it does not require maintenance; also, the formwork structure may be dismounted quickly and with easiness.
  • the seat offers a good support surface to the pin of the second coupling element, favouring therefore the absence of play in the mounted assembly.
  • the second coupling element comprises a hollow jut that presents two lateral faces, constituted by extensions of the lateral walls of the joist, and an lower face, from which the one mentioned pin protrudes.
  • This feature of the second coupling element reinforces even more the resistance of the joint; the front face of the jut of a joist can also support against the face of end of the adjacent joist, being guaranteed a greater rigidity of the mounted group this way.
  • said hollow seat is formed for approximately the lower half of the corresponding end of the joist, and the hollow jut is formed for approximately the upper half of the corresponding end of the joist.
  • said hollow seat also presents an inclined front face, so that the seat is tapered toward its lower part; this way, a free area is created in the lower part of the joint that allows that two adjacent joists can be coupled and disconnect swivelling at least one of them respect to the other one, which facilitates both operations.
  • the hole formed in the upper face of the seat is slightly elongate in the longitudinal direction of the joist; thanks to this feature, the pin is introduced easily in the hole even with the swivelling movement that has been described.
  • the elongate form of the hole does not involve a possibility of play in the mounted joint, thanks to the complementary form of the seat and the jut that leans on it.
  • the joist also comprises, in the part of its lower wall located under said seat, a hole and a drainage tube that facilitate the elimination of water or concrete that can penetrate inside the joist through the coupling hole.
  • the end face of the joist that is below the mentioned jut is inclined; this inclination collaborates in defining the free area in the lower part of the joint that has already been mentioned.
  • the pin is fixed to the lower face of the jut; alternatively, the pin can be fixed to the upper wall of the joist and cross the lower face of the jut, so that its resistance is increased.
  • This pin is advantageously frustoconical, and its tip can be rounded, so that its introduction is facilitated in the corresponding coupling hole.
  • the cross section of it has substantially a T-shape cross section.
  • This first embodiment is used when the panels 2 lean on swivels 5 (figures 3 and 4) disposed next to the joist 1.
  • the use of these swivels 5 is described in patent ES-471.247 mentioned previously.
  • the external wall of the part of greater thickness of the cross section of the joist 1 forms an acute angle with the joining portion 4 between the part of greater thickness and the part of smaller thickness.
  • the panel 2 of the right of the figure 1 is represented in the formwork position, while the panel 2 of the left is in disassembly position.
  • the external wall of the part of greater thickness of the cross section of the joist forms a right or obtuse angle with the joining portion between the part of greater thickness and the part of smaller thickness.
  • FIG 2 a second embodiment of the joist 1 of the invention is represented.
  • the joist 1 comprises in its interior a wooden profile 3 in the upper part of it, so that, in the part of greater thickness. As may be appreciated in this figure, this profile 3 is discovered in its upper part.
  • This joist 1 is only used when the panel 2 leans totally on it and to nail it in the joist 1. It should be indicated that the first embodiment of the joist, represented in figure 1, could also be used in the case that the panel 2 leans totally on the joist 1, when it is not necessary to nail the panel to the joist.
  • a joist 1 is provided that allows an easier disassembly. This is provided thanks to only a small part of their vertical wall is in contact with the panel in the moment of the disassembly. Also, it prevents the concrete that there are between the joist and the panel to slip by the whole vertical wall of the joist, dirtying and producing concrete accumulations that difficult the disassembly after using the joist several times.
  • a joist 1 according to the invention is represented in figure 5. It is constituted by a hollow bar, with T-shape cross section that presents some elements A and B for the coupling with the adjacent joists in longitudinal direction, each one located in an end of the joist and represented with detail in figures 5 and 6, respectively.
  • the element A is constituted by a hollow seat 10 that protrudes from the corresponding end face 11 of the joist; the seat 10 is formed by two lateral parallel faces 12, constituted by continuations of the lateral walls 30 of the joist, and a upper face 13, in which is practised a hole 14 that will house the pin of the other coupling element B.
  • This hole 14 as may be seen in the figure, is slightly elongate in the longitudinal direction of the joist.
  • the front face 15 of the seat is inclined, to define a free area in the lower part of the joint, like it will be described later with reference to figure 7.
  • the element B (figure 6) is constituted by a hollow jut 20 that protrudes from the corresponding end face 21 of the joist; this end face 21 is also inclined, like it will be explained later.
  • the jut 20 is formed by corresponding parallel lateral faces 22, constituted by continuations of the lateral walls 30 of the joist, and an lower face 23 from which the pin 24 to lodge, in assembly situation, in the hole 14 of the adjacent joist.
  • a substantially vertical front face 15 completes the jut 20.
  • Figure 7 shows two joists 1a and 1b in section in coupling situation.
  • the pin 24 in coupling position the pin 24 is inserted in the hole 14, the lower face 23 of the jut 20 is leaning on the upper face 13 of the seat 10, and the front face 25 of the jut of the joist 1b is next to the end face 11 of the joist 1a.
  • the hole 14 allows the crossing of the pin 24 thanks to its slightly elongate form.
  • the pin 24 is welded to the upper wall 50 of the joist and it crosses the lower face 23 of the corresponding jut.
  • a hole 16 and a drainage tube 17 can be provided in the lower wall 6, in the area under the coupling hole 13, to facilitate the elimination of water or concrete.

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)
  • Magnetic Heads (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
EP98500084A 1997-04-04 1998-04-01 Schalungsträger Expired - Lifetime EP0869233B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES9700976U ES1036962Y (es) 1997-04-04 1997-04-04 Sopanda para encofrados de superficies horizontales.
ES9700978U 1997-04-04
ES9700976U 1997-04-04
ES9700978U ES1036964Y (es) 1997-04-04 1997-04-04 Sopanda para encofrados.

Publications (2)

Publication Number Publication Date
EP0869233A1 true EP0869233A1 (de) 1998-10-07
EP0869233B1 EP0869233B1 (de) 2004-06-16

Family

ID=26155057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98500084A Expired - Lifetime EP0869233B1 (de) 1997-04-04 1998-04-01 Schalungsträger

Country Status (4)

Country Link
EP (1) EP0869233B1 (de)
AT (1) ATE269468T1 (de)
DE (1) DE69824470D1 (de)
PT (1) PT869233E (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2259938A1 (es) * 2005-08-01 2006-10-16 Ingenieria De Encofrados Y Servicios, S.L. Viga para soporte de tableros de encofrado.
ES2273613A1 (es) * 2006-10-19 2007-05-01 Sistemas Tecnicos De Encofrados, S.A. "dispositivo de soporte para tableros de encofrado de piso".
WO2008046945A1 (es) * 2006-10-19 2008-04-24 Sistemas Técnicos De Encofrados, S.A. Dispositivo de soporte para tableros de encofrado de piso
US10975585B2 (en) 2018-10-15 2021-04-13 Peri Formwork Systems, Inc. Connection assembly for formwork

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH330032A (de) * 1954-02-20 1958-05-31 Simoncelli Arnaldo Traggerüst für eine Schalung zur Herstellung von Gebäudeteilen, insbesondere von Decken im Eisenbetonbau
CH383608A (de) * 1959-06-08 1964-10-31 Lindpointner Ludwig Bauträger, insbesondere Schalungsträger
FR1460514A (fr) * 1964-10-26 1966-01-07 Betonbau G M B H Poutre d'échafaudage
CH445811A (de) * 1967-02-07 1967-10-31 Kern Ag Conrad Schalungsträger
US3431694A (en) * 1965-03-12 1969-03-11 Hunnebeck Ag Rhombic girder
ES471247A1 (es) 1978-06-29 1979-01-16 Encofrados J Alsina Sa Sistema de encofrado para forjado de jacenas,pisos y simila-res
DE8709316U1 (de) * 1987-01-07 1987-10-15 Neville, Colin W., King City, Ontario Formträger
EP0279049A2 (de) * 1987-02-19 1988-08-24 Niels Dipl.-Ing. Hollmann Schalungsplatten-Träger für Betonierungsschalungen
DE8907860U1 (de) * 1989-06-28 1989-08-10 Rose, Udo, 4836 Herzebrock Nebenträger für Betonschalung
EP0380149A1 (de) * 1989-01-27 1990-08-01 Matab B.V. Schalungsvorrichtung für Decke
EP0663486A1 (de) * 1993-12-27 1995-07-19 Gerhard Dingler Bauelement

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH330032A (de) * 1954-02-20 1958-05-31 Simoncelli Arnaldo Traggerüst für eine Schalung zur Herstellung von Gebäudeteilen, insbesondere von Decken im Eisenbetonbau
CH383608A (de) * 1959-06-08 1964-10-31 Lindpointner Ludwig Bauträger, insbesondere Schalungsträger
FR1460514A (fr) * 1964-10-26 1966-01-07 Betonbau G M B H Poutre d'échafaudage
US3431694A (en) * 1965-03-12 1969-03-11 Hunnebeck Ag Rhombic girder
CH445811A (de) * 1967-02-07 1967-10-31 Kern Ag Conrad Schalungsträger
ES471247A1 (es) 1978-06-29 1979-01-16 Encofrados J Alsina Sa Sistema de encofrado para forjado de jacenas,pisos y simila-res
DE8709316U1 (de) * 1987-01-07 1987-10-15 Neville, Colin W., King City, Ontario Formträger
EP0279049A2 (de) * 1987-02-19 1988-08-24 Niels Dipl.-Ing. Hollmann Schalungsplatten-Träger für Betonierungsschalungen
EP0380149A1 (de) * 1989-01-27 1990-08-01 Matab B.V. Schalungsvorrichtung für Decke
DE8907860U1 (de) * 1989-06-28 1989-08-10 Rose, Udo, 4836 Herzebrock Nebenträger für Betonschalung
EP0663486A1 (de) * 1993-12-27 1995-07-19 Gerhard Dingler Bauelement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2259938A1 (es) * 2005-08-01 2006-10-16 Ingenieria De Encofrados Y Servicios, S.L. Viga para soporte de tableros de encofrado.
ES2273613A1 (es) * 2006-10-19 2007-05-01 Sistemas Tecnicos De Encofrados, S.A. "dispositivo de soporte para tableros de encofrado de piso".
ES2283234A1 (es) * 2006-10-19 2007-10-16 Sistemas Tecnicos De Encofrados, S.A. "mejoras en el objeto principal de la patente n. 200602659 por: dispositivo de soporte para tableros de encofrado de piso".
WO2008046945A1 (es) * 2006-10-19 2008-04-24 Sistemas Técnicos De Encofrados, S.A. Dispositivo de soporte para tableros de encofrado de piso
US10975585B2 (en) 2018-10-15 2021-04-13 Peri Formwork Systems, Inc. Connection assembly for formwork

Also Published As

Publication number Publication date
EP0869233B1 (de) 2004-06-16
DE69824470D1 (de) 2004-07-22
PT869233E (pt) 2004-10-29
ATE269468T1 (de) 2004-07-15

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