EP0633369A1 - Dispositif pour de decoffrage de coffrages de dalle - Google Patents
Dispositif pour de decoffrage de coffrages de dalle Download PDFInfo
- Publication number
- EP0633369A1 EP0633369A1 EP94108671A EP94108671A EP0633369A1 EP 0633369 A1 EP0633369 A1 EP 0633369A1 EP 94108671 A EP94108671 A EP 94108671A EP 94108671 A EP94108671 A EP 94108671A EP 0633369 A1 EP0633369 A1 EP 0633369A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formwork
- coupling
- pipe section
- ceiling
- thread
- 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.)
- Withdrawn
Links
- 238000009415 formwork Methods 0.000 claims description 113
- 238000010168 coupling process Methods 0.000 claims description 36
- 238000005859 coupling reaction Methods 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 35
- 230000013011 mating Effects 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 12
- 239000011324 bead Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000009416 shuttering Methods 0.000 abstract description 6
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 239000002131 composite material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/003—Arrangements for stabilising the forms or for moving the forms from one place to another
Definitions
- the invention relates to a device for striking a slab formwork with a plurality of releasably connected formwork panels which have stiffening webs or the like at their edges, also for their mutual connection, as well as passages and / or beads arranged in the edge-side stiffening webs which complement one another between adjacent formwork panels for formwork tie rods or connecting bolts, with a formwork aid for gripping the formwork panels to be stripped, which holds one or more formwork panels after they have been detached from the other formwork panels, the device having at least one hollow body or a piece of pipe for cutting out a passage opening in the ceiling concrete in continuation of the passage for a formwork tie rod and as a stripping aid at least one tension element with one end Coupling has, whose outer cross section is smaller than the inner cross section of the hollow body or pipe section.
- a device is known as a stripping aid for slab formwork, in which tension elements with an end hook and hollow body are provided for the slab concrete.
- the traction elements with the hooks can be lowered through the hollow body by means of a winch and can attack formwork beams, which can be released from the formwork skin after they have been released.
- Correspondingly large hollow bodies must be provided for the passage of the hooks, which causes correspondingly large openings in the ceiling concrete.
- hooking on a carrier is a relatively unsafe type of fastening, which involves the risk that, for example in the event of an uneven lowering of several hooks and inclined position of the carrier assembly, one or more such hook connections are unintentionally released.
- the formwork skin must also be removed and removed after removing and lowering the carrier.
- the stripping should be carried out as quickly as possible practically without physical exertion and largely without risk.
- the device mentioned at the outset is characterized in that a coupling which engages or is attached to the formwork panel fits to the coupling and that a part which has the backing coupling in the position of use removably engages under the edge of the passage (s) on the underside of the formwork panels.
- formwork panel itself could be the mating coupling from the outset, but it is cheaper if formwork panels with appropriate openings can be used because they can also be used in normal concrete construction for concreting walls, i.e., conversely, formwork panels can also be used which walls are concreted, also used for slab formwork and then later easily detected and lowered from above using the device according to the invention. It is sufficient in an advantageous manner to lower the tension element with its coupling at the end through the hollow body or the pipe section in the concrete ceiling and through the passage in the panel and to connect it below the panel with the mating coupling in order to attach the panel to the hoist, whereby An unsecured fastening is only avoided with a hook that engages under a formwork support. This largely eliminates the risk of an accident.
- the length of the hollow body or pipe section can be approximately equal to or less than the thickness of the ceiling to be concreted and a releasable, openable or pierceable closure can be provided for the upper end of the hollow body or pipe section in the use position.
- this piece of pipe does not protrude from the top of the concrete ceiling, which in itself would also be possible.
- the attachment elements can be inserted from above.
- the closure initially provided prevents concrete or dirt from clogging the passage opening during concreting.
- the pipe sections and their closures prevent concrete in the formwork panels pass through or these passages must be closed beforehand.
- wall switching panels can be used for such slab formwork, the clamping points on the formwork panels now being the attachment points for a hoist when lowering. This means not only an accelerated formwork, but also a rationalization of the formwork panels to be kept in stock.
- Embodiments of the tension element in particular with regard to the coupling located at its end, are the subject of claims 3 to 5 and 8.
- a thread as a coupling and a counterpart with a counter thread can be anchored very quickly to a formwork panel to be stripped or the passage provided there.
- the coarse, rolling or trapezoidal thread according to claim 8 allows on the one hand the transmission of large forces and on the other hand represents a thread that is largely insensitive to contamination or can be easily cleaned.
- a pressed-on end piece with the coupling can be conveniently attached, for example, to a tension element designed as a rope or wire rope and can transmit correspondingly high forces, so that the production of this stripping aid is also simple.
- the device can have a funnel-shaped deflection cone, the mouthpiece of which fits into the upper open end of the hollow body or tube piece in the position of use, the funnel-shaped extension of which continues the inner cavity of the hollow body or tube piece in the use position and whose small inner cross-section in the area of the mouthpiece is equal to or larger than that the tension element or the crane rope and its end piece with coupling.
- the introduction of the tension element from above through the pipe section and the passage of the formwork board facilitates and, moreover, in the upper edge region of the ceiling, where the tension element slides along when the formwork panels are lowered, guidance and protection between the ceiling and tension element results.
- pull elements drawn at an angle by a hoist can be conveniently deflected in the insertion funnel in this way and the upper edge of the passage opening is shielded and protected against the sliding pull element.
- At least three, in particular four tension elements can be connected to a cable suspension with a common suspension for attacking a crane or hoist, so that the weight forces emanating from several tension elements can finally be absorbed by a crane via a suspension.
- the pipe section can consist of concrete, in particular of fiber concrete, so that it can remain within the ceiling concrete. After stripping, the inside of this pipe section can also be filled with concrete if necessary. However, it is also possible to use the openings in the ceiling for the passage of lines or, for example, with To provide threaded sleeves or the like to obtain anchor points for installations.
- the pipe section can be fixable during concreting by means of a threaded bolt, preferably by means of a tie rod, the thread of which engages in an internal thread of a detachable end piece at the upper end of the pipe, preferably the closure.
- the upper closure of the pipe section has a double function by preventing the entry of concrete and also fixes the pipe section in its position of use together with the threaded rod, so that it is not displaced by the applied concrete.
- a head or - especially when using a tie rod - a nut can be screwed on, in which case the required length can be adjusted practically continuously and adapted to the length of the pipe section.
- a slab formwork consisting of several detachably interconnected formwork panels 2
- the formwork panels 2 are first of all released and lowered from the supports holding them during the concreting process and also at least partially from one another.
- the formwork panels 2 in the edge-side stiffening webs 3 each have corresponding beads 6, which are complementary to a passage 4 between adjacent formwork panels 2, through which formwork tie rods can grip when the formwork panels 2 are used for concreting walls.
- FIGS. 1 to 4 a stripping aid for detecting shuttering panels 2 to be shuttered, which is to be explained in more detail below, is shown, with which, according to FIGS. 5 and 6, a plurality of shuttering panels 2 can be held and lowered after they have been released from the rest of the panel assembly.
- the entire device for striking slab formwork according to FIGS. 1 to 6 in the exemplary embodiment has a plurality of hollow bodies or pipe sections 7, hereinafter referred to as "pipe sections 7", with through openings 8 in the concrete of the slab 1 in continuation of the passages 4 for each Formwork tie rods can be left out.
- pipe sections 7 hollow bodies or pipe sections 7, hereinafter referred to as "pipe sections 7"
- through openings 8 in the concrete of the slab 1 in continuation of the passages 4 for each Formwork tie rods can be left out.
- a tension element 9 with an end coupling 10 the outer cross section of which is smaller than the inner cross section of the respective pipe section 7, so that it passes from above this passage opening 8, which corresponds to the inner cavity of the pipe section 7, can be inserted and connected to the formwork panels 2 in a manner to be described.
- To the coupling piece 10 fits on or attached to the formwork panels 2 or attached, to be explained in more detail below.
- a part 11 having the counter-coupling releasably engages under the edge of the passage or passages 4, in the present case the beads 6, on the underside of the formwork panels 2.
- the length of the pipe section 7 is approximately equal to the thickness of the ceiling 1 to be concreted or - in the exemplary embodiment - somewhat smaller and that a detachable or openable or possibly pierceable closure 12 is provided at the upper end of the pipe section 7, which can be seen in FIG. 1 and which prevents contaminants and in particular concrete from getting into the passage opening 8, that is to say the inner longitudinal cavity of the pipe section 7, during concreting.
- the traction element 9 carries at its end an end piece 13 with the coupling 10 and is designed as a crane rope for connection to a hoist or crane. So it can be mostly at training as a wire rope transfer high forces.
- the coupling 10 on the crane cable is in the exemplary embodiment the already mentioned end piece 13 with a thread 14, to which a mating thread in a mating piece 11 fits, so that this mating thread and the mating piece 11 practically form the previously mentioned mating coupling.
- the thread 14 on the end piece 13 is an external thread according to FIG. 3, so that the counterpart 11 is a nut that can be screwed onto it.
- this nut is also provided with an eyelet 15, so that it can be tightened, for example, with the aid of a rod inserted transversely through the eyelet 15.
- An essential part of the stripping aid is a funnel-shaped deflection cone 16 shown in FIGS. 2 to 4, the mouthpiece 17 of which has the smaller cross section and fits into the upper open end of the pipe section 7 in the position of use, as can be clearly seen in FIGS.
- the funnel-shaped extension 18 of this deflecting cone 16, which has the actual hollow cone shape, continues the inner cavity of the hollow body or tube piece 7 in the use position upwards.
- the smaller internal cross section in the area of the mouthpiece 17 is equal to or larger than that of the tension element 9 or the crane cable and its end piece 13 with coupling.
- tension elements 9 with end pieces and coupling and associated mating couplings and four deflection cones 16 are provided for the simultaneous detection of a plurality of interconnected control panels 2, as shown in FIGS. 5 and 6, the individual crane ropes or tension elements 9 are guided on the deflection cones 16 in the manner shown and combined to form a common suspension point, that is to say the four tension elements 9 can be connected to the rope suspension system shown in FIG. 5 with a common suspension 19 for attacking a crane or hoist be connected.
- the pipe section 7 arranged perpendicular to the formlining 21 of the formwork panels 2 is expediently made of concrete, for example of fiber concrete, so that it can remain within the concrete ceiling 1.
- a threaded bolt 20 expediently a tensioning rod also suitable as formwork tie rod, is provided, the thread of which engages in an internal thread of a releasable end piece, in the exemplary embodiment of the closure 12, at the upper end of the tubular piece 7 and is fastened at the lower end with a nut 22 .
- This threaded bolt 20 is thus fixed between the internal threads of the nut 22 and the closure 12 and thus supports the pipe section 7 from the inside in such a way that it can withstand the concrete flowing onto the slab formwork.
- the closure 12 thus has a double function. On the one hand it helps to fix the pipe section 7 during concreting and on the other hand it prevents unwanted blockage or contamination of the passage opening 8 located inside the pipe section 7.
- a plurality of passage openings 8 arranged at a predetermined distance from one another are kept free in the concrete of the ceiling 1 with the aid of pipe sections 7, so that a corresponding number of attachment elements 9 are simultaneously guided through a plurality of passage openings 8 and can be connected to formwork panels 2 underneath in the manner described.
- a larger number of formwork panels 2 which initially remain connected to one another can simultaneously be released from the composite formwork and lowered together.
- the extensions 18 guide the traction elements that run obliquely to the attachment 19 and protect the upper edges of the passage openings 8.
- the assembly of a plurality of formwork panels 2 which can be lowered simultaneously can first be lowered and placed on a storage surface 23, for example the floor of the room to which the ceiling 1 belongs. Then this formwork panel assembly can be unilaterally detached from the suspension connected to the hoist, namely in the exemplary embodiment a rope suspension, then pulled up with the remaining suspension elements and hung approximately vertically, from this hanging position compared to the original formwork position, by lowering it until an edge of the formwork panel has reached the storage area 23, after which the tilted storage area is finally reached by tilting in the direction of the arrow Pf 1 and finally lowering it. In this turned position, the composite of several formwork panels 2, which was initially removed over a large area, can now be removed.
- This turning process can also be carried out in an advantageous manner as in the previously described formwork process a hoist to be worked, which is located outside the closed space, which is completed by the concrete ceiling 1.
- a passage opening 8 can be recessed therein during concreting of the slab so that a lifting device can be inserted from outside the room having the slab 1 after the concrete has set through this passage opening 8 can, in order to detect the formwork panels 2 located under the ceiling 1 and to lower them into the interior of the room having the concrete ceiling 1.
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4319586 | 1993-06-14 | ||
| DE4319586 | 1993-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0633369A1 true EP0633369A1 (fr) | 1995-01-11 |
Family
ID=6490256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94108671A Withdrawn EP0633369A1 (fr) | 1993-06-14 | 1994-06-07 | Dispositif pour de decoffrage de coffrages de dalle |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0633369A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2212723A1 (es) * | 2002-07-04 | 2004-07-16 | Ulma C Y E, S. Coop. | Procedimiento de desencofrado para viaductos y dispositivo para ejecucion del mismo. |
| US20190003182A1 (en) * | 2015-12-15 | 2019-01-03 | EVEHX Engenharia Ltda. | Set of components for tendon encapsulation process in active anchor plate in prestressed concrete |
| CN116104296A (zh) * | 2023-01-06 | 2023-05-12 | 中建八局第二建设有限公司 | 一种板底砼加固免支撑式可周转模板系统及施工工法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1207200A (fr) * | 1958-08-30 | 1960-02-15 | Perfectionnements aux procédés de coffrage de planchers | |
| FR1216442A (fr) * | 1958-11-25 | 1960-04-25 | Procédé de construction et dispositif de coffrage d'un plancher en béton ou autrematière | |
| DE1534852B1 (de) * | 1962-12-19 | 1971-08-26 | Acrow Eng Ltd | Schaltafel |
| DE1684480B1 (de) * | 1966-12-16 | 1972-02-03 | Steidle Bau E | Schalungsgeruest |
| DE1709346A1 (de) * | 1966-12-16 | 1972-11-09 | Steidle Bau E | Verfahren zum Absenken von Deckenschalungselementen |
| FR2403434A1 (fr) * | 1977-09-15 | 1979-04-13 | Coffrages Modernes | Table a plancher pour le coffrage de surfaces horizontales en beton arme |
| EP0019922A1 (fr) * | 1979-06-05 | 1980-12-10 | Heinz G. Riss | Dispositif d'ancrage et de manutention à pied élargi et tête de levage |
| DE3844487C1 (en) * | 1988-12-31 | 1990-02-15 | Maier, Josef, 7619 Steinach, De | Anchorage for shuttering panels for embedding supporting load-bearing members in concrete |
-
1994
- 1994-06-07 EP EP94108671A patent/EP0633369A1/fr not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1207200A (fr) * | 1958-08-30 | 1960-02-15 | Perfectionnements aux procédés de coffrage de planchers | |
| FR1216442A (fr) * | 1958-11-25 | 1960-04-25 | Procédé de construction et dispositif de coffrage d'un plancher en béton ou autrematière | |
| DE1534852B1 (de) * | 1962-12-19 | 1971-08-26 | Acrow Eng Ltd | Schaltafel |
| DE1684480B1 (de) * | 1966-12-16 | 1972-02-03 | Steidle Bau E | Schalungsgeruest |
| DE1709346A1 (de) * | 1966-12-16 | 1972-11-09 | Steidle Bau E | Verfahren zum Absenken von Deckenschalungselementen |
| FR2403434A1 (fr) * | 1977-09-15 | 1979-04-13 | Coffrages Modernes | Table a plancher pour le coffrage de surfaces horizontales en beton arme |
| EP0019922A1 (fr) * | 1979-06-05 | 1980-12-10 | Heinz G. Riss | Dispositif d'ancrage et de manutention à pied élargi et tête de levage |
| DE3844487C1 (en) * | 1988-12-31 | 1990-02-15 | Maier, Josef, 7619 Steinach, De | Anchorage for shuttering panels for embedding supporting load-bearing members in concrete |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2212723A1 (es) * | 2002-07-04 | 2004-07-16 | Ulma C Y E, S. Coop. | Procedimiento de desencofrado para viaductos y dispositivo para ejecucion del mismo. |
| US20190003182A1 (en) * | 2015-12-15 | 2019-01-03 | EVEHX Engenharia Ltda. | Set of components for tendon encapsulation process in active anchor plate in prestressed concrete |
| US10626613B2 (en) * | 2015-12-15 | 2020-04-21 | EVEXH Engenharia Ltda. | Set of components for tendon encapsulation process in active anchor plate in prestressed concrete |
| CN116104296A (zh) * | 2023-01-06 | 2023-05-12 | 中建八局第二建设有限公司 | 一种板底砼加固免支撑式可周转模板系统及施工工法 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
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| RAX | Requested extension states of the european patent have changed |
Free format text: SI PAYMENT 940706 |
|
| 17P | Request for examination filed |
Effective date: 19950128 |
|
| 17Q | First examination report despatched |
Effective date: 19951013 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19960207 |