EP0197248A1 - Coffrage de poutre - Google Patents

Coffrage de poutre Download PDF

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Publication number
EP0197248A1
EP0197248A1 EP86101020A EP86101020A EP0197248A1 EP 0197248 A1 EP0197248 A1 EP 0197248A1 EP 86101020 A EP86101020 A EP 86101020A EP 86101020 A EP86101020 A EP 86101020A EP 0197248 A1 EP0197248 A1 EP 0197248A1
Authority
EP
European Patent Office
Prior art keywords
formwork
cross member
joist
flanges
stiffening
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
EP86101020A
Other languages
German (de)
English (en)
Other versions
EP0197248B1 (fr
Inventor
Josef Maier
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.)
Individual
Original Assignee
Individual
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 DE3512113A external-priority patent/DE3512113C1/de
Application filed by Individual filed Critical Individual
Priority to AT86101020T priority Critical patent/ATE39961T1/de
Publication of EP0197248A1 publication Critical patent/EP0197248A1/fr
Application granted granted Critical
Publication of EP0197248B1 publication Critical patent/EP0197248B1/fr
Expired 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
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/04—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for lintels, beams, or transoms to be encased separately; Special tying or clamping means therefor

Definitions

  • the invention relates to a joist formwork with formwork panels for the approximately vertical side surfaces of the joist, which formwork panels have at their edges approximately perpendicular to the formlining edge webs with fastening points, and with a lower cross connection of these vertical formwork panels for holding an approximately horizontal formwork skin for the underside of the beam.
  • under-beam formwork is shown, for example, in German patent application P 34 03 148.0.
  • Another formwork panel with edge webs is provided as the formlining of the underside of the beam, which must be connected to the vertical formwork panels using corner rails.
  • the width of the girder is then fixed in accordance with the width of this lower formwork panel. If a beam with a different width is to be formed, another formwork panel must be connected to the underside. Depending on the dimensions of the beams, the user must always ensure that the correct formwork panel is provided for the underside of the beams.
  • Such formwork panels are relatively expensive formwork parts.
  • the solution to this problem consists essentially in the fact that formwork panels or boards which can be adjusted in width are provided as horizontal formlining and a crossbeam is used to connect the vertical formwork panels of the beam and to support the formlining, with its ends projecting laterally beyond the formwork panels and in its projecting end regions each has an upwardly projecting flange which extends into the area of the edge webs of the formwork panels and can be connected to it, this flange having at least one attachment point corresponding to the attachment points of the edge webs and at least one flange being adjustable in the longitudinal direction on the cross member .
  • this cross member and the fastening flanges on it it is possible to connect to the edge web of the formwork panels, which can be gripped from the outside.
  • the cross member can support the horizontal formlining and allows due to the adjustment availability of at least one of its flanges a correspondingly close adaptation to different widths of beams, even for dimensions for which prefabricated formwork panels with edge webs are not available.
  • very simple formwork panels or boards can be used, the width of which can be adjusted accordingly easily with a saw or the like.
  • the cross member has at least one row of fastening points and the adjustable flange in turn has at least one matching fastening point so that it can be adjusted according to the spacing of the fastening points of the cross member.
  • the cross member is flat on its upper side facing the beam and has perforations penetrating it as fastening points and if the flange in turn has a connection at an angle to it as a retaining plate extending from it with a corresponding perforation.
  • the flange then practically forms a cross-section with the retaining plate extending from it, the vertical leg of which serves to connect to the webs of the vertical formwork panels, while the horizontal leg establishes the connection to the cross member.
  • the cross member On its underside, can have at least one stiffening web, preferably vertical in cross section, which runs in particular below the fastening flanges. As a result, the forces emanating from these flanges can be well introduced into or absorbed by the cross member.
  • keyhole-like holes are provided as fastening points, into which bolts with cross pins can be inserted.
  • Such fastening bolts according to DE-PS 21 37 505 have proven themselves well for the fastening of formwork panels with edge webs to one another and for connecting accessories to these formwork panels and, when the fastening points are designed as keyhole-like holes that match them, they can also be used in connection with the invention Beam formwork. It can be sufficient to fix the adjustable flange if such a bolt with a cross pin is provided on one of its holding plates and only a simple plug pin is provided on the other holding plate.
  • the stiffening of the crossbeam can be strengthened and improved by running two angle rails below a horizontal flat rail, the vertical legs of which form stiffening webs. This results in a very stable and stiff cross member.
  • the angle rails can rest against one another with their webs, with flat iron possibly also being attached, in particular welded in, between these vertical angle legs for further reinforcement.
  • the flanges can also be used for simple construction Flat material such as plates, flat bars, profile legs or the like. Be in the position of use with their flat side against the flat side of the edge or a stiffening web of the formwork panel. Given the corresponding material thickness of these flanges, approximately corresponding to the thickness of the webs of the formwork panels, the bolts provided for fastening such formwork panels to one another fit without any special adaptation.
  • the flanges can have on the mutually facing sides immediately above the top of the cross member connecting them .. a rim open recess for overlapping the transverse bottom edge web of the side formwork panel. This allows them to grip a vertical crossbar or stiffening web within the frame of the formwork panel despite such a lower crossbar.
  • the fastening flange can have at least two fastening points located one above the other, preferably holes for attachment to a vertical web of a formwork panel of the joist formwork.
  • the connection to the cross member and the horizontal formlining held by it is also correspondingly secure and firm in this area.
  • a modified embodiment of the invention can consist in that the cross member in the use position upright, that is to say with its flat side having the fastening points, is arranged approximately vertically in cross section and the flanges vzw. rest on this flat side.
  • This has the advantage that the web of the cross member which has the fastening points itself forms the stiffening and can transmit corresponding forces emanating from the flanges. It is advantageous if the cross member has at least one stiffening web on its flat side, in particular on the side facing away from the attack side of the flanges. This also increases the stability in an approximately horizontal direction.
  • cross member as a profile rail, for. b. is designed as an angle or U-rail, the legs of which form the or the stiffening webs.
  • a further embodiment of the invention of considerable importance can consist in that the end region of the cross member is extended beyond the attack of the flange and has at least one attachment point for one end of a stiffening strut, the other end of which engages the vertical formwork panel.
  • Such a configuration is particularly advantageous for beams with large cross-sections, in the form of which correspondingly large forces occur during the shelling and concreting.
  • the one or more ends of the stiffening strut can be designed in the form of a tab and provided with at least one perforation that matches the fastening perforations on the cross member and / or the webs of the formwork panel. Installation is correspondingly simple and easy.
  • the effective length of the stiffening strut can be changed by fastening points arranged in a row on itself and / or the cross member. In particular, this makes it possible to adapt to differently high beams with correspondingly different formwork panels.
  • cross member can be an angle or U-rail, and vzw on both in cross section. legs placed at right angles to each other
  • fixing points especially perforations for the flanges and / or stiffening webs.
  • This not only results in a very rigid configuration of the cross member, but flanges, stiffening struts and the like can optionally be connected to the top and the leg with a horizontal cross-section there or to the flat side of this cross member which is vertical in cross-section.
  • a whole under 1 with formwork has for the vertical side surfaces of the joist formwork panels 2, which have at their edges perpendicular to their formwork 3 edge webs 4 and possibly parallel to this, crossing, stiffening webs with fastening points 5 in the form of keyhole-like holes.
  • To the joist formwork 1 also includes a cross member, generally designated 6, which holds and connects the vertical formwork panels 2 and also supports and supports a horizontal formlining 7 resting on it for the underside of the joist.
  • the cross member 6 serving to connect the vertical formwork panels 2 of the beam and to support the formlining 7 protrudes laterally with its ends 6a over the formwork panels 2 and has an upwardly projecting part in each of these projecting end regions 6a in the region of the vertical edge webs 4 or also from stiffening webs of the formwork panels 2, with these connectable flanges 8.
  • the flanges 8 each have two fastening points which are designed as holes and correspond to the fastening points or holes 5 in the webs 4 of the formwork panels.
  • the connecting flange 8 shown on the right in FIGS. 1 and 2 is adjustable on the cross member 6 in its longitudinal direction in a manner to be described.
  • Fig. 2 it can be seen that the cross member 6 has two rows of fastening points in the form of keyhole-like holes 9 on its upper side and also the adjustable flange 8 has matching fastening points in the form of keyhole-like holes 10.
  • the fastening holes 10 of the flange 8 are located in retaining plates 11 which extend from the flange at a right angle and which fit on the upper side of the cross member 6. This results in a very stable connection of this adjustable flange 8 to the cross member 6, because two rows of fastening holes 9 are provided and the flange 8 also has outgoing holding plates 11 with holes 10 on each side.
  • two bolts with cross pins and at least one bolt with a cross pin and a plug pin can be used to fix the flange 8, which is also fastened to the web 6 with two bolts.
  • this creates a firm connection to the cross member 6 and at the same time achieves good stiffening.
  • the cross member 6 has at least one stiffening web 12 on its underside which is vertical in cross section Flanges 8 can be introduced well into this stiffening web 12.
  • the stiffening of the cross member 6 is achieved with the aid of two angle rails 13, which are arranged below a horizontal flat rail 14, the horizontal legs 13 a of the angle rail 13 being connected to this flat rail 14, for. 6. are welded and the vertical legs 13 b belong to the stiffening web 12. Flat bars 15 are welded between these legs 13 b for further stiffening and reinforcement of the stiffening web 12.
  • Fig. 3 makes it clear that a cross member 6 thus results overall, which has a high section modulus and good rigidity in the required directions.
  • the flanges 8 are also flat material such as flat iron, plates or profile legs and are in their use position with an edge region of their flat side against the flat side of the edge or stiffening web 4 of the formwork panel 2.
  • the flanges 8 At the mutually facing edge regions, the flanges 8 have a recess 16 which is open on the edge immediately above the upper side of the cross member 6 connecting them, which overlaps the transverse lower edge web 4 of the respective formwork panel 2. This makes it possible for the flanges 8 to extend with their edge region close to the rear of the formlining 3 of the formwork panel 2, that is to say to obtain the greatest possible coverage with the webs 4.
  • the spacing of the perforations 9 on the cross member 6 allow a gradual change in the beam width in correspondingly narrow or small steps.
  • the adjustment and assembly can be carried out very easily and quickly, but sufficiently large forces can nevertheless be transmitted.
  • FIGS. 4 to 6 A modified embodiment of the invention is shown in FIGS. 4 to 6 and is particularly suitable for easily forming larger beams and for absorbing the larger forces that occur.
  • the cross member 6 is in this case, in the use position, edgewise, that is to say with its flat side having the fastening points formed as keyhole-like holes 9, is arranged approximately vertically in cross section and the flanges 8 rest on this flat side. This is particularly clear in Fig. 5.
  • Fig. 5 also shows that the cross member 6 in this embodiment has on its flat side on the side facing away from the flanges 8 stiffening webs 12 which in this case correspond to the arrangement of the cross member 6 rotated by 90 ° with respect to FIGS. 1 and 3 their cross section are arranged approximately horizontally.
  • the cross member 6 is in this case a profile rail, namely a U-rail, the legs of which form the stiffening webs 12.
  • Fig. 4 it can be seen that the end region 6 a of the cross member 6 is extended beyond the attack of the flanges 8 and attachment points, in the present case until in this area 6 a arranged holes 9 for one end of a stiffening strut 17, the other end of which engages the vertical formwork panel 2 in its upper edge area.
  • the ends of the stiffening strut 17 are tab-shaped and formed by flat iron 18 and provided with at least one keyhole-like perforation 19 which fit the fastening perforations 9 on the cross member 6 and the webs 4 of the formwork panel 2. Possibly.
  • tabs 18 could also have a plurality of perforations 19 one behind the other in order to be able to change their effective length if formwork panels 2 of different dimensions are to be used or the flange 8 on the cross member 6 is adjusted accordingly. Such an adjustment can follow the stiffening strut 17 due to the series of perforations 9 with the formwork panel 2 having the same dimensions.
  • the attachable to the cross member 6 mounting bracket 18 of the stiffening strut 17 is in the use position on the same in cross-sectionally flat side as the flanges 8 and both mounting tabs 18 of the stiffening strut 17 are arranged in the exemplary embodiment with each other and in the use position with the flanges 8 in a common vertical plane runs perpendicular to the formlining of the vertical formwork panels 2. The force is thus transmitted both on the flanges 8 and on the struts 17 in this plane. 4, the two flanges 8 are adjustable in the longitudinal direction of the cross member 6. If one thinks of the embodiments according to FIGS. 1 and 4 combined, a cross member 6 can also be an angular rail or possibly a U-rail and fastening points in the form of holes 9 for the two legs that are perpendicular to one another in cross section

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)
  • Mechanical Operated Clutches (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP86101020A 1985-04-03 1986-01-25 Coffrage de poutre Expired EP0197248B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101020T ATE39961T1 (de) 1985-04-03 1986-01-25 Unterzugschalung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3512113A DE3512113C1 (de) 1985-04-03 1985-04-03 Unterzugschalung
DE3512113 1985-04-03
DE19853516096 DE3516096A1 (de) 1985-04-03 1985-05-04 Unterzugschalung
DE3516096 1985-05-04

Publications (2)

Publication Number Publication Date
EP0197248A1 true EP0197248A1 (fr) 1986-10-15
EP0197248B1 EP0197248B1 (fr) 1989-01-11

Family

ID=25831020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101020A Expired EP0197248B1 (fr) 1985-04-03 1986-01-25 Coffrage de poutre

Country Status (6)

Country Link
EP (1) EP0197248B1 (fr)
AU (1) AU570837B2 (fr)
DE (2) DE3516096A1 (fr)
DK (1) DK163444C (fr)
ES (1) ES296631Y (fr)
NO (1) NO165308C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120139163A1 (en) * 2010-12-01 2012-06-07 Erik Garfinkel Automated concrete structural member fabrication system, apparatus and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR742281A (fr) * 1933-03-03
GB493295A (en) * 1937-04-05 1938-10-05 Henry Charles Copeman Improved means for use in the casting of concrete beams in situ
CH338595A (it) * 1956-06-15 1959-05-31 Dreyfuss Isidor Morsa regolabile particolarmente per casseforme di travi in calcestruzzo e cemento armato
FR1547697A (fr) * 1967-10-18 1968-11-29 Coffrage pour poutres

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3512113C1 (de) * 1985-04-03 1986-06-05 Josef 7611 Steinach Maier Unterzugschalung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR742281A (fr) * 1933-03-03
GB493295A (en) * 1937-04-05 1938-10-05 Henry Charles Copeman Improved means for use in the casting of concrete beams in situ
CH338595A (it) * 1956-06-15 1959-05-31 Dreyfuss Isidor Morsa regolabile particolarmente per casseforme di travi in calcestruzzo e cemento armato
FR1547697A (fr) * 1967-10-18 1968-11-29 Coffrage pour poutres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120139163A1 (en) * 2010-12-01 2012-06-07 Erik Garfinkel Automated concrete structural member fabrication system, apparatus and method
US9186813B2 (en) * 2010-12-01 2015-11-17 Erik Garfinkel Automated concrete structural member fabrication system, apparatus and method

Also Published As

Publication number Publication date
DK149386A (da) 1986-10-04
AU5419386A (en) 1986-10-09
NO165308C (no) 1991-01-23
DE3661747D1 (en) 1989-02-16
ES296631Y (es) 1988-05-16
DK163444B (da) 1992-03-02
EP0197248B1 (fr) 1989-01-11
DE3516096A1 (de) 1986-11-06
NO165308B (no) 1990-10-15
AU570837B2 (en) 1988-03-24
DK149386D0 (da) 1986-04-02
NO861295L (no) 1986-10-06
DK163444C (da) 1992-07-20
ES296631U (es) 1987-12-01

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