EP0197248B1 - Unterzugschalung - Google Patents

Unterzugschalung Download PDF

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Publication number
EP0197248B1
EP0197248B1 EP86101020A EP86101020A EP0197248B1 EP 0197248 B1 EP0197248 B1 EP 0197248B1 EP 86101020 A EP86101020 A EP 86101020A EP 86101020 A EP86101020 A EP 86101020A EP 0197248 B1 EP0197248 B1 EP 0197248B1
Authority
EP
European Patent Office
Prior art keywords
stiffening
concrete beam
flanges
vertical
beam mould
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.)
Expired
Application number
EP86101020A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0197248A1 (de
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/de
Application granted granted Critical
Publication of EP0197248B1 publication Critical patent/EP0197248B1/de
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 and with a lower cross member for holding an approximately horizontal formwork skin for the underside of the joist, which cross member protrudes laterally with its ends over the vertical formwork panels and one in its projecting end areas has stiffening at the top in the area of the formwork panels, at least one stiffening on the cross member being adjustable in the longitudinal direction thereof.
  • a beam formwork is known, in which on the one hand a very complex bracing is necessary for the vertical formwork panels formed only from wooden panels and on the other hand two horizontal cross members are required, the upper one of which supports the formwork skin while the lower one Crossbeam used to support the stiffeners for the vertical formwork panels.
  • the stiffeners are arranged in pairs so that the upper cross member and the lower cross member can engage between them. Furthermore, these stiffeners require laterally projecting flanges with nail holes in order to be able to establish the connection to the wooden panels.
  • the bracing is designed as a flange which has at least one fastening point for connecting to edge webs which are approximately at right angles to their formlining at the edges of the formwork panels, the fastening point of the flange corresponding to those of the edge webs, and that Flanges on the mutually facing edge areas immediately above the cross member connecting them have a recess open at the edge for engaging over the transverse lower edge web of the vertical formwork panels, so that the flanges extend close to the back of the formwork skin of the formwork panels provided with edge webs.
  • stiffeners are securely and easily attached to the vertical formwork panels and can support them, even though the formwork panels have edge webs.
  • the flanges can, despite the lower edge web, engage well on a vertical cross web or stiffening web within the frame of the formwork panels at the fastening point there. Fastening with nails to the actual formlining is advantageously avoided. Nevertheless, there is also the advantage that the width of the beam formwork can be easily adapted to the respective requirements.
  • At least one of the flanges can have at least two fastening points, one above the other, preferably holes, for attachment to a vertical web of a formwork panel of the joist formwork. Accordingly, the connection to the cross member and the horizontal formlining held by it is correspondingly secure and firm in this area.
  • keyhole-like holes are provided as fastening points, into which bolts with cross pins can be inserted and rotated for locking.
  • Such fastening bolts according to DE-A-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 suitable keyhole-like holes, they can also be used in connection with the sub invention train formwork.
  • the flanges can be flat material such as plates, flat irons, profile legs or the like and, in the position of use with an edge area of their flat side, lie against the flat side of the edge or a stiffening web of the formwork panel, with their fastening holes overlapping with those of this web are located.
  • the bolts provided for fastening such formwork panels to one another fit without any special adaptation.
  • a further development of the invention can consist in that the cross member is in the upright position, that is to say with its flat side having the fastening points, is arranged approximately vertically in cross-section and the flanges bear against 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 appropriate forces emanating from the flanges.
  • the cross member has on its flat side, in particular on the side facing away from the attack side of the flanges, at least one stiffening web which is preferably horizontal in cross section. This also increases the stability in an approximately horizontal direction.
  • cross member as a profile rail, for. B. is designed as an angle rail or U-rail, the legs of which form or the stiffening webs.
  • the cross member to reinforce the stiffening below a horizontal flat rail has at least one angle rail, preferably two angle rails, the vertical legs of which form stiffening webs.
  • the angular rails can rest against one another with their webs which are vertical in cross section, it being possible for at least one flat iron to be fastened, in particular welded in, between these vertical legs, if necessary, for further reinforcement.
  • 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.
  • the cross member can be an angle or U-rail, and vzw on both in cross section.
  • legs at right angles to each other can have fastening points, in particular 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 beyond 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, which can be connected to these 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 4 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 with a vertical cross section on its underside. This runs essentially below the fastening flanges 8, so that the forces from the flanges 8 can be well introduced 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. B. 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 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 overlap with the webs 4.
  • the spacings 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 portion 6a of the cross member 6 is extended beyond the attack of the flanges 8 and attachment points, in the present case up to this area 6a arranged holes 9 for one end of a stiffening strut 17, the other end at the vertical formwork panel 2 attacks 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.
  • the two flanges 8 are adjustable in the longitudinal direction of the cross member 6.
  • a cross member 6 can also be an angled rail or possibly a U-rail and fastening points in the form of holes 9 for the flanges 8 and / or stiffening struts on both legs which are perpendicular to one another in cross section 17 have, the attachment points can then be adapted to corresponding plates or tabs to the respective attachment point of this cross member 6.
  • An angular configuration of the corresponding end of the stiffening strut 17 and also the anchoring of the flange 8 would even be conceivable in order to further strengthen the power transmission.

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

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
DE3512113 1985-04-03
DE3512113A DE3512113C1 (de) 1985-04-03 1985-04-03 Unterzugschalung
DE3516096 1985-05-04
DE19853516096 DE3516096A1 (de) 1985-04-03 1985-05-04 Unterzugschalung

Publications (2)

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

Family

ID=25831020

Family Applications (1)

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

Country Status (6)

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

Families Citing this family (1)

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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR742281A (no) * 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
DE3512113C1 (de) * 1985-04-03 1986-06-05 Josef 7611 Steinach Maier Unterzugschalung

Also Published As

Publication number Publication date
DE3661747D1 (en) 1989-02-16
NO165308C (no) 1991-01-23
DE3516096A1 (de) 1986-11-06
DK149386A (da) 1986-10-04
EP0197248A1 (de) 1986-10-15
NO165308B (no) 1990-10-15
AU570837B2 (en) 1988-03-24
NO861295L (no) 1986-10-06
ES296631Y (es) 1988-05-16
AU5419386A (en) 1986-10-09
DK163444C (da) 1992-07-20
DK149386D0 (da) 1986-04-02
DK163444B (da) 1992-03-02
ES296631U (es) 1987-12-01

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