EP0952258B1 - Shuttering element for an underground cast wall and method for the removal thereof - Google Patents
Shuttering element for an underground cast wall and method for the removal thereof Download PDFInfo
- Publication number
- EP0952258B1 EP0952258B1 EP99106413A EP99106413A EP0952258B1 EP 0952258 B1 EP0952258 B1 EP 0952258B1 EP 99106413 A EP99106413 A EP 99106413A EP 99106413 A EP99106413 A EP 99106413A EP 0952258 B1 EP0952258 B1 EP 0952258B1
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- Prior art keywords
- formwork
- concrete
- expanding
- flat joint
- formwork element
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/182—Bulkheads or similar walls made solely of concrete in situ using formworks to separate sections
Definitions
- the invention relates to a formwork element of a flat joint formwork with means for detaching or detaching adherent Concrete masses and circulating concrete in sections Production of a diaphragm wall.
- Diaphragm walls are an important component in basic construction and serve, for example, as construction pit enclosures, retaining walls for jumps in the terrain or as sealing walls for dams and landfills. It is characteristic of the design of diaphragm walls that an open bottom slot is constantly stabilized by refilled support. As is known, diaphragm walls are produced step by step in individual construction sections, each section forming a concreting unit. The diaphragm wall sections are usually separated from one another by storage structures. In the past, steel shuttering pipes were used as support structures, which were recovered after the concrete had stiffened, which means that the pipes could not be pulled until the concrete had set. Extremely heavy pullers had to be used to pull.
- a formwork of an end joint is a Section of a diaphragm wall described.
- the formwork for the end connection point of mold wall sections, which comprises a plate and a box mounted thereon, in cross section a longitudinal joint for inserting the connection point has and constructed from at least two parts and for successive connection in Is equipped with connecting elements in the longitudinal direction characterized in that the box faces each part reset a corresponding end of the plate and that the connecting elements from a connector are formed, which is essentially the same cross section has like the box and with the plates in question each of the parts is connectable by going into the break area the boxes are inserted in such a way that the Overlaps end areas of the plates.
- EP 0 402 247 B1 describes a method and a device to remove a seal adhering to the concrete wall section cast in the floor. The procedure is characterized in that facing away from the concrete Side of the seal a joint using a tool is carried out at a location above the joint Place is connected to the seal.
- a formwork element Flat joint formwork with means for pressing the formwork element of the hardening concrete in section-by-section production described a diaphragm wall in which the base body of the formwork element arranged on the concrete side elongated recesses is provided, in which hydraulic or pneumatically actuated pistons are arranged, the Seal the recesses on surfaces facing the concrete.
- the invention has for its object a new formwork element a flat joint formwork with means for detachment or blasting off adhering concrete masses and in particular of circulating concrete in the section-by-section production specify a diaphragm wall, as well as a rational Process for its expansion, which are known to each other Means and processes through special efficiency and uncomplicated Handling when detaching or blasting more adherent Mark concrete masses and thereby the construction progress promote and that when sealing diaphragm wall sections overcome the resulting difficulties better and facilitate the progress of the work.
- the release agent or blasting agent are designed in the form of a spreading device, and that the formwork element has a base body arranged on the concrete side and surface parts forming vertical guide elements has, between which one on average one horizontal plane U-shaped, with the back shaped and non-positively against the concrete mass, for receiving the spreader with a vertical passage trained Pressure body in the horizontal direction between the Surface parts of the guide elements, with these in a form-fitting manner, is displaceably arranged.
- Figure 1 shows a formwork element of a flat joint formwork 8 with means for detaching or blasting off adhering Concrete masses 10 and (not shown) from circulating concrete the section-wise production of a diaphragm wall.
- the Formwork element has a base body 1 with a concrete side arranged and vertical guide elements 2 forming Surface parts 3, between which one on average one horizontal plane x-x U-shaped, with the back formund non-positively against the concrete mass 10, for Inclusion of a spreading device 4 with a vertical Passage 5 formed pressure body 6 in a horizontal Direction between the surface parts 3 of the guide elements 2 and is arranged such that it can be displaced in the positive connection.
- the formwork element is together with one from above loosely usable expansion body 4 as an integrating functional unit the flat joint formwork 8 is formed. Further One embodiment provides that the spreading device 4 on the one hand with a horizontal axis in a friction-locked system on the base body 1 of the flat joint formwork 8, and on the other hand on the inner wall of the pressure body 6 for blasting of the formwork element or base body 1 of adhesive Concrete mass 10 is formed.
- FIG 3 shows an advantageous embodiment of the invention, several spreaders 4 preferably in cooperation with a lifting device 12 to one another Unit 9 connected in the form of a push-off carriage are.
- the spreading device 4 can be a hydraulic one or pneumatic piston / cylinder unit. It but should not be ruled out with the invention, that the spreader 4 also with an electromechanical Spindle drive can be formed.
- the formwork element of a flat joint formwork 8 is particularly suitable for Use in the construction of a diaphragm wall and for sections Progress by incorporating one according to claims 1 up to 6 trained, which can be assembled from formwork elements Flat joint formwork 8 and thus solves in an optimal manner the task at the beginning.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Geophysics And Detection Of Objects (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein Schalungselement einer Flachfugenschalung mit Mitteln zum Ablösen bzw. Absprengen von anhaftenden Betonmassen sowie von Umlaufbeton bei der abschnittsweisen Herstellung einer Schlitzwand.The invention relates to a formwork element of a flat joint formwork with means for detaching or detaching adherent Concrete masses and circulating concrete in sections Production of a diaphragm wall.
Schlitzwände bilden ein wichtiges Bauteil im Grundbau und
dienen beispielsweise als Baugrubenumschließung, Stützmauer
bei Gelängesprüngen oder als Dichtungswand bei Dämmen und
Mülldeponien.
Charakteristisch für die Ausführung von Schlitzwänden ist,
daß ein offener Bodenschlitz durch nachgefüllte Stützschlüssigkeit
ständig stabilisiert wird.
Bekanntermaßen werden Schlitzwände schrittweise in einzelnen
Bauabschnitten hergestellt, wobei jeder Abschnitt eine
Betoniereinheit bildet. Die Schlitzwandabschnitte werden in
der Regel durch Abstellkonstruktionen voneinander getrennt.
In der Vergangenheit wurden als Abstellkonstruktionen unter
anderem Abschalrohre aus Stahl verwendet, die nach Ansteifen
des Betons wiedergewonnen wurden, das heißt, es konnte
mit dem Ziehen der Rohre nicht gewartet werden, bis der Beton
abgebunden war. Zum Ziehen mußten äußerst schwere Ziehgeräte
eingesetzt werden.
Seit einigen Jahren ist man dazu übergegangen, als Abstellkonstruktionen
Flachfugenschalungen zu verwenden, die erst
nach dem Abbinden des Betons gelöst und ohne Ziehpressen
gezogen werden. Weil aber insbesondere bei tiefen Schlitzwänden
aufgrund von Unebenheiten und statischem Flüssigkeitsdruck
in der ausgehobenen Wand beim Betoniervorgang
flüssiger Beton hinter die Fugenschalung läuft, sogenannter
Umlaufbeton, muß in vielen Fällen dennoch ein erheblicher
Aufwand betrieben werden, um die Flachfugenschalungen vom
fertiggestellten Schlitzwandbereich zu lösen. Diaphragm walls are an important component in basic construction and serve, for example, as construction pit enclosures, retaining walls for jumps in the terrain or as sealing walls for dams and landfills.
It is characteristic of the design of diaphragm walls that an open bottom slot is constantly stabilized by refilled support.
As is known, diaphragm walls are produced step by step in individual construction sections, each section forming a concreting unit. The diaphragm wall sections are usually separated from one another by storage structures. In the past, steel shuttering pipes were used as support structures, which were recovered after the concrete had stiffened, which means that the pipes could not be pulled until the concrete had set. Extremely heavy pullers had to be used to pull.
For some years now it has been adopted to use flat-joint formwork as support structures, which are only released after the concrete has set and can be pulled without drawing presses. However, because in particular with deep diaphragm walls due to unevenness and static liquid pressure in the excavated wall, liquid concrete runs behind the joint formwork during the concreting process, so-called circulating concrete, in many cases a considerable effort must nevertheless be made to detach the flat joint formwork from the finished diaphragm wall area.
In der EP 0 101 350 ist ein Verfahren und eine Vorrichtung zum Ausziehen der Schalung bei der Herstellung einer unterirdischen Schlitzwand beschrieben. Es handelt sich dabei um ein Verfahren zum Ausziehen eines Schalungselementes, welches bei der Herstellung einer Platte benutzt wird, die Bestandteil einer im Boden gegossenen Wand ist, wobei das Schalungselement einen mittleren profilierten Teil, dessen Profil einer Vertiefung entspricht, die in das Ende der herzustellenden Platten eingeformt werden soll, und zwei Flansche aufweist, die beiderseits des mittleren Teiles liegen. Das Verfahren ist gekennzeichnet durch folgende Verfahrensschritte:
- Verwenden eines Schalungselementes der oben genannten Art, das über die Oberfläche des Bodens vorragt;
- Montieren eines Werkzeuges auf dem vorragenden Teil des Schalungselementes, wobei das Werkzeug einen Körper und zwei profilierte Teile aufweist, die seitlich auf den Flanschen des Schalungselementes gleitende Nuten bilden, wobei der untere Teil der profilierten Teile derart angefast ist, daß er einen Entschalungskeil bildet;
- Aufbringen einer Rammbewegung auf das Werkzeug derart, daß die keilförmigen Bereiche der profilierten Teile zwischen die betonierte Platte und ihr zugehöriges Schalungselement gepreßt werden, bis die Keile zwischen die betonierte Platte und das Schalungselement eingeführt sind;
- Fortsetzen der Rammbewegung, um das Werkzeug immer tiefer einzusenken bis zum vollständigen Ablösen des Schalungselementes.
- Using a formwork element of the type mentioned above, which protrudes above the surface of the floor;
- Mounting a tool on the protruding part of the formwork element, the tool having a body and two profiled parts, which form sliding grooves laterally on the flanges of the formwork element, the lower part of the profiled parts being chamfered such that it forms a demoulding wedge;
- Applying a ramming motion to the tool such that the wedge-shaped areas of the profiled parts are pressed between the concrete slab and its associated formwork element until the wedges are inserted between the concrete slab and the formwork element;
- Continue the ramming movement to sink the tool deeper and deeper until the formwork element is completely detached.
Ein Werkzeug für die Durchführung dieses Verfahrens ist dadurch gekennzeichnet, daß es einen Körper und zwei profilierte Teile aufweist, die seitliche, auf den Flanschen des Schalungselementes gleitende Nuten bilden, wobei der untere Teil der profilierten Teil derart angefast ist, daß er einen Entschalungskeil bildet.This is a tool for performing this procedure characterized in that it profiled one body and two Has parts, the lateral, on the flanges of the Formwork form sliding grooves, the lower Part of the profiled part is chamfered so that it has a Formwork wedge forms.
In EP 0 374 051 B1 ist eine Verschalung einer Endfuge eines Anschnittes einer Schlitzwand beschrieben. Die Schalung für die endseitige Verbindungsstelle von Formwandabschnitten, die eine Platte und einen auf dieser montierten Kasten umfaßt, im Querschnitt eine Längsfuge zum Einfügen der Verbindungsstelle aufweist und aus mindestens zwei Teilen aufgebaut ist, und zur aufeinanderfolgenden Verbindung in Längsrichtung mit Verbindungselementen ausgerüstet ist, ist dadurch gekennzeichnet, daß der Kasten jedes Teils gegenüber einem entsprechenden Ende der Platte zurückgesetzt ist, und daß die Verbindungselemente von einem Verbindungsstück gebildet sind, das im wesentlichen den gleichen Querschnitt hat wie der Kasten und mit den betreffenden Platten jedes der Teile verbindbar ist, indem es in den Unterbrechungsbereich der Kästen derart eingefügt wird, daß es die Endbereiche der Platten übergreift.In EP 0 374 051 B1 a formwork of an end joint is a Section of a diaphragm wall described. The formwork for the end connection point of mold wall sections, which comprises a plate and a box mounted thereon, in cross section a longitudinal joint for inserting the connection point has and constructed from at least two parts and for successive connection in Is equipped with connecting elements in the longitudinal direction characterized in that the box faces each part reset a corresponding end of the plate and that the connecting elements from a connector are formed, which is essentially the same cross section has like the box and with the plates in question each of the parts is connectable by going into the break area the boxes are inserted in such a way that the Overlaps end areas of the plates.
Die EP 0 402 247 B1 beschreibt ein Verfahren und eine Vorrichtung zum Ablösen einer am Beton haftenden Dichtung eines im Boden gegossenen Wandabschnittes. Das Verfahren ist dadurch gekennzeichnet, daß auf die von dem Beton abgewandte Seite der Dichtung ein Stoß mit Hilfe eines Werkzeuges ausgeführt wird, das an einer über der Stoßstelle gelegenen Stelle mit der Dichtung verbunden ist. EP 0 402 247 B1 describes a method and a device to remove a seal adhering to the concrete wall section cast in the floor. The procedure is characterized in that facing away from the concrete Side of the seal a joint using a tool is carried out at a location above the joint Place is connected to the seal.
Ferner wird in DE-U-90 01 679 ein Schalungselement einer Flachfugenschalung mit Mitteln zum Abdrücken des Schalungselements vom erhärtenden Beton bei der abschnittweisen Herstellung einer Schlitzwand beschrieben, bei dem der Grundkörper des schalungselements mit betonseitig angeordneten länglichen Aussparungen versehen ist, in denen hydraulisch oder pneumatisch betätigbare Kolben angeordnet sind, deren dem Beton zugewandte Flächen die Aussparungen abdichten.Furthermore, in DE-U-90 01 679 a formwork element Flat joint formwork with means for pressing the formwork element of the hardening concrete in section-by-section production described a diaphragm wall in which the base body of the formwork element arranged on the concrete side elongated recesses is provided, in which hydraulic or pneumatically actuated pistons are arranged, the Seal the recesses on surfaces facing the concrete.
Der Erfindung liegt die Aufgabe zugrunde, ein neues Schalungselement einer Flachfugenschalung mit Mitteln zum Ablösen bzw. Absprengen von anhaftenden Betonmassen sowie insbesondere von Umlaufbeton bei der abschnittsweisen Herstellung einer Schlitzwand anzugeben, sowie ein rationelles Verfahren zu dessen Ausbau, die sich gegenüber bekannten Mitteln und Verfahren durch besondere Effizienz und unkomplizierte Handhabung beim Ablösen bzw. Absprengen anhaftender Betonmassen auszeichnen und dadurch den Baufortschritt fördern und die sich beim Abdichten von Schlitzwand-Abschnitten ergebenden Schwierigkeiten besser überwinden und den Fortlauf der Arbeiten erleichtern.The invention has for its object a new formwork element a flat joint formwork with means for detachment or blasting off adhering concrete masses and in particular of circulating concrete in the section-by-section production specify a diaphragm wall, as well as a rational Process for its expansion, which are known to each other Means and processes through special efficiency and uncomplicated Handling when detaching or blasting more adherent Mark concrete masses and thereby the construction progress promote and that when sealing diaphragm wall sections overcome the resulting difficulties better and facilitate the progress of the work.
Zur Lösung der Aufgabe wird bei einem Schalungselement der im Oberbegriff von Anspruch 1 angegebenen Art mit der Erfindung vorgeschlagen, daß die Ablös- bzw. Absprengmittel in Form einer Spreizvorrichtung ausgestaltet sind, und daß das Schalungselement einen Grundkörper mit betonseitig angeordneten und vertikale Führungselemente ausbildenden Flächenteilen aufweist, zwischen welchen ein im Schnitt einer horizontalen Ebene U-förmiger, mit dem Rücken form- und kraftschlüssig an der Betonmasse anliegender, zur Aufnahme der Spreizvorrichtung mit einem vertikalen Durchlaß ausgebildeter Druckkörper in horizontaler Richtung zwischen den Flächenteilen der Führungselemente, mit diesen in Formschluß, verlagerbar angeordnet ist.To solve the problem with a formwork element specified in the preamble of claim 1 with the invention suggested that the release agent or blasting agent are designed in the form of a spreading device, and that the formwork element has a base body arranged on the concrete side and surface parts forming vertical guide elements has, between which one on average one horizontal plane U-shaped, with the back shaped and non-positively against the concrete mass, for receiving the spreader with a vertical passage trained Pressure body in the horizontal direction between the Surface parts of the guide elements, with these in a form-fitting manner, is displaceably arranged.
Durch den Einsatz einer Spreizvorrichtung wird das Absprengen einer Flachfugenschalung vom anstehenden Beton wesentlich erleichtert, die Anwendung von Schlageinwirkung vermieden und damit erhöhter Verschleiß sowie Erschütterungen und erhöhter Baustellenlärm unterbunden. Das Arbeiten mit der erfindungsgemäß einzusetzenden Spreizvorrichtung erlaubt einen zügigen Arbeitsfortschritt bei problemloser Handhabung der Spreizvorrichtung und der damit zusammenwirkenden Flachfugenschalung und trägt damit gleichzeitig zur Humanisierung des entsprechenden Arbeitsprozesses bei.By using a spreading device the blasting off a flat joint formwork from the upcoming concrete is essential relieved, the use of impact avoided and therefore increased wear and shocks and increased construction site noise. Working with allows the spreading device to be used according to the invention rapid work progress with less problems Handling the spreading device and the interacting with it Flat joint formwork and thereby contributes at the same time Humanization of the corresponding work process at.
Weitere Ausgestaltungen des Schalungselementes sind entsprechend den Unteransprüchen vorgesehen. Further configurations of the formwork element are corresponding provided the subclaims.
Ein Verfahren zum Ausbau einer nach den Ansprüchen ausgebildeten, aus Schalungselementen zusammensetzbaren Flachfugenschalung ist gekennzeichnet durch die Arbeitsschritte:
- daß ein Spreizkörper bzw. eine zusammenhängende Einheit mehrerer Spreizkörper, beispielsweise in Form eines spreizbaren Abdrückschlittens, mit einer Hebevorrichtung von oben her in wenigstens jeweils einen vertikalen Durchlaß eines Flachfugenschalungs-Grundkörper eingeführt wird,
- daß Flachfugenschalungs-Grundkörper sukzessive bevorzugt von oben nach unten durch Spreizen des bzw. der Speizkörper vom anstehenden Beton abgesprengt werden,
- daß nach Absprengen der Flachfugenschalungs-Grundkörper vom Beton die komplette Flachfugenschalung enschließlich des bzw. der Druckkörper nach oben aus der Schlitzwand herausgezogen und ausgebaut werden.
- that a spreading body or a coherent unit of several spreading bodies, for example in the form of an expandable push-off slide, is inserted from above into at least one vertical passage of a flat joint formwork base body with a lifting device,
- that flat joint formwork basic bodies are successively blasted off from the concrete, preferably from top to bottom, by spreading the grouting body or bodies,
- that after the flat joint formwork basic body has blown off the concrete, the complete flat joint formwork is finally pulled out of the diaphragm wall and removed, and then removed.
Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der nachstehenden Erläuterung eines in den Zeichnungen schematisch dargestellten Ausführungsbeispieles. Es zeigen:
- FIG.1
- eine Draufsicht auf eine im Bau befindliche Schlitzwand mit Einsatz eines Schalungselementes nach der Erfindung;
- FIG.2
- Schlitzwand mit Flachfugenschalung gemäß FIG.1 nach Absprengen der Betonmasse unter der Wirkung der Spreizvorrichtung in Draufsicht;
- FIG.3
- mehrere Spreizkörper im Zusammenwirken mit einer Hebevorrichtung in Seitenansicht, miteinander zu einer Einheit nach Art eines Abdrückschlittens verbunden.
- FIG.1
- a plan view of a diaphragm wall under construction using a formwork element according to the invention;
- FIG.2
- Diaphragm wall with flat joint formwork according to FIG. 1 after the concrete mass has blown off under the action of the spreading device in plan view;
- FIG.3
- several expansion bodies in cooperation with a lifting device in side view, connected to one another in the manner of a push-off carriage.
Figur 1 zeigt ein Schalungselement einer Flachfugenschalung
8 mit Mitteln zum Ablösen bzw. Absprengen von anhaftenden
Betonmassen 10 sowie (nicht gezeigt) von Umlaufbeton bei
der abschnittsweisen Herstellung einer Schlitzwand. Das
Schalungselement besitzt einen Grundkörper 1 mit betonseitig
angeordneten und vertikale Führungselemente 2 ausbildenden
Flächenteilen 3, zwischen welchen ein im Schnitt einer
horizontalen Ebene x-x U-förmiger, mit dem Rücken formund
kraftschlüssig an der Betonmasse 10 anliegender, zur
Aufnahme einer Spreizvorrichtung 4 mit einem vertikalen
Durchlaß 5 ausgebildeter Druckkörper 6 in horizontaler
Richtung zwischen den Flächenteilen 3 der Führungselemente
2 und mit diesen im Formschluß verlagerbar angeordnet ist.
Das Schalungselement ist zusammen mit einem von oben her
lose einsetzbaren Spreizkörper 4 als integrierende Funktionseinheit
der Flachfugenschalung 8 ausgebildet. Weiter
sieht eine Ausgestaltung vor, daß die Spreizvorrichtung 4
einerseits mit horizontaler Achse in kraftschlüssiger Anlage
am Grundkörper 1 der Flachfugenschalung 8, und andererseits
an der Innenwand des Druckkörpers 6 zum Absprengen
des Schalungselementes bzw. Grundkörpers 1 von anhaftender
Betonmasse 10 ausgebildet ist.Figure 1 shows a formwork element of a
Dazu zeigt Figur 2 den Grundkörper bzw. das Schalungselement
1 nach erfolgtem Ablösen bzw. Absprengen von anhaftenden
Betonmassen 10, wobei sich der Grundkörper 1 mit der
integrierten Querwand nach rechts gegen den Aushub 11 des
nächsten Abschnitts verschoben hat. Die Abschlußwand des
Grundkörpers 1 reicht wie dargestellt zur Überbrückung des
Abstandes zwischen den Leitwänden 7.2 shows the basic body or the formwork element
1 after detachment or detachment of adherent ones
Concrete masses 10, wherein the base body 1 with the
integrated transverse wall to the right against the
Dazu zeigt Figur 3 eine vorteilhafte Ausgestaltung der Erfindung,
wobei mehrere Spreizkörper 4 bevorzugt im Zusammenwirkung
mit einer Hebevorrichtung 12 miteinander zu einer
Einheit 9 in Form eines Abdrückschlittens verbunden
sind. 3 shows an advantageous embodiment of the invention,
Erfindungsgemäß kann die Spreizvorrichtung 4 eine hydraulische
oder pneumatische Kolben/Zylinder-Einheit sein. Es
soll aber mit der Erfindung nicht ausgeschlossen werden,
daß die Spreizvorrichtung 4 auch mit einem elektromechanischen
Spindeltrieb ausgebildet sein kann.According to the invention, the spreading
Das Schalungselement einer Flachfugenschalung 8 nach der
Erfindung eignet sich in besonders vorteilhafter Weise zum
Einsatz beim Bau einer Schlitzwand sowie zum abschnittsweisen
Fortschritt unter Einbau einer nach den Ansprüchen 1
bis 6 ausgebildeten, aus Schalungselementen zusammensetzbaren
Flachfugenschalung 8 und löst somit in optimaler Weise
die eingangs gestellte Aufgabe.The formwork element of a
Claims (7)
- Formwork element of a flat joint formwork (8) comprising means for releasing or stripping the latter from adhering concrete masses (10) and also from circulating concrete during the section-by-section construction of a diaphragm wall, characterized in that the releasing or stripping means are designed in the form of an expanding device (4), and in that the formwork element has a basic body (1) with surface parts (3) which form vertical guiding elements (2) and are arranged on the concrete side, between which surface parts (3) a pressure member (6), which is U-shaped in the section of a horizontal plane (x-x), has its rear bearing in a form- and force-locking manner against the concrete mass (10) and is designed with a vertical opening (5) for the purpose of receiving the expanding device (4), is arranged in such a way that it can be displaced in the horizontal direction between the surface parts (3) of the guiding elements (2), in form-locking engagement with the latter.
- Formwork element according to Claim 1, characterized in that, together with an expanding member (4) which can be inserted loosely from above, it is designed as an integral functional unit of the flat joint formwork (8).
- Formwork element according to Claim 1 or 2, characterized in that the expanding device (4) is designed on the one hand with its horizontal shaft bearing in a force-locking manner against the basic body (1) of the flat joint formwork (8), and on the other hand against the inner wall of the pressure member (6), for stripping the formwork element or basic body (1) from adhering concrete mass (10).
- Formwork element according to one or more of Claims 1 to 3, characterized in that a plurality of expanding members (4), preferably in interaction with a lifting device (12), are connected to one another to form a unit (9).
- Formwork element according to one or more of Claims 1 to 4, characterized in that the expanding device (4) is a hydraulic or pneumatic piston/cylinder unit.
- Formwork element according to one or more of Claims 1 to 4, characterized in that the expanding device (4) is designed with an electromechanical spindle drive.
- Method for dismantling a flat joint formwork (8) which can be composed of formwork elements and is designed according to Claims 1 to 6, characterized by the following work steps:an expanding member (4) or a continuous unit of a plurality of expanding members, for example in the form of an expandable ejector carriage (9), is introduced by a lifting device from above into in each case at least one vertical opening of a basic body (1) of a flat joint formwork,basic bodies (1) of the flat joint formwork are successively stripped from the in situ concrete (10), preferably from the top downwards, by expanding the expanding member or members,after stripping the basic bodies (1) of the flat joint formwork from the concrete (10), the complete flat joint formwork (8), including the pressure member or members (6), are withdrawn upwards out of the diaphragm wall and dismantled.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19817982A DE19817982C1 (en) | 1998-04-22 | 1998-04-22 | Formwork element of a flat joint formwork and method for its expansion |
| DE19817982 | 1998-04-22 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0952258A2 EP0952258A2 (en) | 1999-10-27 |
| EP0952258A3 EP0952258A3 (en) | 2000-01-05 |
| EP0952258B1 true EP0952258B1 (en) | 2002-10-23 |
Family
ID=7865451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99106413A Expired - Lifetime EP0952258B1 (en) | 1998-04-22 | 1999-03-27 | Shuttering element for an underground cast wall and method for the removal thereof |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0952258B1 (en) |
| AT (1) | ATE226664T1 (en) |
| DE (2) | DE19817982C1 (en) |
| DK (1) | DK0952258T3 (en) |
| ES (1) | ES2188052T3 (en) |
| HK (1) | HK1023798A1 (en) |
| PT (1) | PT952258E (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10113289B2 (en) | 2016-01-07 | 2018-10-30 | V-Forms, LLC | Forms and subsurface structural elements that redirect soil forces |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114525777A (en) * | 2022-02-22 | 2022-05-24 | 上海市基础工程集团有限公司 | Self-pushing joint box for rubber steel plate water stop |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139306A (en) * | 1980-04-01 | 1981-10-30 | Takenaka Komuten Co Ltd | Locking pipe for construction of underground continuous wall |
| FR2531733A1 (en) * | 1982-08-11 | 1984-02-17 | Sif Entreprise Bachy | METHOD AND DEVICE FOR EXTRACTING A FORMWORK IN THE CONTEXT OF PRODUCING A MOLDED WALL IN THE GROUND |
| FR2640307B1 (en) * | 1988-12-14 | 1993-06-11 | Soletanche | FORMWORK FOR MOLDED WALL PANEL END JOINT |
| FR2647828B1 (en) * | 1989-06-06 | 1991-08-30 | Soletanche | METHOD AND DEVICE FOR TAKING OFF CONCRETE TO WHICH IT ADHESDS, AN END JOINT OF A WALL PANEL MOLDED IN THE GROUND |
| DE9001679U1 (en) * | 1990-02-13 | 1991-06-13 | Bauer Spezialtiefbau Gmbh, 8898 Schrobenhausen, De |
-
1998
- 1998-04-22 DE DE19817982A patent/DE19817982C1/en not_active Expired - Fee Related
-
1999
- 1999-03-27 ES ES99106413T patent/ES2188052T3/en not_active Expired - Lifetime
- 1999-03-27 PT PT99106413T patent/PT952258E/en unknown
- 1999-03-27 DK DK99106413T patent/DK0952258T3/en active
- 1999-03-27 EP EP99106413A patent/EP0952258B1/en not_active Expired - Lifetime
- 1999-03-27 DE DE59903141T patent/DE59903141D1/en not_active Expired - Lifetime
- 1999-03-27 AT AT99106413T patent/ATE226664T1/en active
-
2000
- 2000-02-08 HK HK00100699A patent/HK1023798A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10113289B2 (en) | 2016-01-07 | 2018-10-30 | V-Forms, LLC | Forms and subsurface structural elements that redirect soil forces |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59903141D1 (en) | 2002-11-28 |
| HK1023798A1 (en) | 2000-09-22 |
| EP0952258A2 (en) | 1999-10-27 |
| DK0952258T3 (en) | 2003-02-24 |
| PT952258E (en) | 2003-03-31 |
| EP0952258A3 (en) | 2000-01-05 |
| ES2188052T3 (en) | 2003-06-16 |
| ATE226664T1 (en) | 2002-11-15 |
| DE19817982C1 (en) | 1999-11-18 |
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