摘要:
Reusable modular formwork for making floors, comprising one or more modular and monolithic portal-shaped elements, each comprising a horizontal upper base in contact with the concrete casting and at least two opposing lateral walls in contact with the concrete casting, with lower parts or edges suited to rest on at least one prop or beam or linear temporary bearing element suited to removably support, directly or indirectly, said formwork and the relative concrete casting.
摘要:
A method of constructing a suspended floor is described in which a plurality of beam-forming formwork assemblies (10) are located in substantially parallel alignment, the beam-forming formwork assemblies are supported in support assemblies (26) on a support base (60) in stable equilibrium, a plurality of floor-forming formwork assemblies (54) are located between the beam-forming formwork assemblies for support thereon, concrete (56) is poured in said formwork assemblies, the concrete is allowed to set, and the formwork assemblies are removed from the set concrete for re-use.
摘要:
Reusable formwork for construction in concrete, especially for defining the "growing" end of a concrete diaphragm wall or other wall being formed below ground level, comprises at least two rigid formwork bodies (1, 3, 4, 7) together forming a containing surface for concrete to be cast. Mechanical means (such as hydraulic jacks J 1 , J 2 , J 3 ) are provided for producing forces across the containing surface (2) tending to produce relative movement of the rigid bodies and sufficient to release one of them from adhesion to concrete cast on the said containing surface. Preferably there are more than two of the rigid bodies arranged so that by actuating them in appropriate sequence they can all be released.
摘要:
Die Schalung zum Herstellen von Unterzügen an Beton decken hat zwei in veränderbarem Abstand voneinander anzuordnende Schalelemente, die jeweils eine etwa senk recht stehende Schalhaut aufweisen, und mittels Lochraster höheneinstellbare Auflagen für eine horizontal anzuordnen de Schalplatte. Die Schalelemente haben einen selbsttra genden, Längsträger enthaltenden Tragrahmen für die Schalhaut und können zu mehreren aneinander anschlie ßend mit einem Verbindungselement hintereinander befe stigt werden. Die Verbindungselemente sind als Rahmen ausgebildet, der an seinen beiden Enden jeweils Befesti gungselemente zum Befestigen aneinander anstoßender Schalelemente aufweist und auf Stahlrohrstützen aufsetz bar ist. Die Befestigungselemente sind auf horizontalen Abschnitten des Rahmens mittels Lochraster verstell- und einstellbare Schieber.
摘要:
Systemschalung für eine einen Unterzug aufweisende Betondecke mit Seitenschalelementen für die Seitenflächen des Unterzuges, deren Schalhaut an quer zur Längsachse des Unterzuges verlaufenden Trägern befestigt ist, mit Unterschalelementen für die Unterfläche des Unterzuges, die zumindest eine Schalhaut aufweisen, und mit Vorrichtungen, die die Seitenschalelemente miteinanderverbinden, dadurch gekennzeichnet, daß mindestens die Seitenschalelemente (1. 2, 61, 130, 131) einer Seite schwenkbar an der Deckenschalung (Deckenträger 65) aufgehängt sind und die Seitenschalelemente durch beim Ausschalen lösbare Befestigungsmittel (7, 9, 148) miteinander verbunden sind.
摘要:
A weight reduction element (1) for the construction industry, constituted by at least one disposable formwork (2), substantially shaped like a truncated pyramid, which is hollow and has a closed upper surface (4) and a lower opening (6a). Such element has, at least proximate to the corners (7) that are adjacent to the lower opening (6a) or proximate to the corners (107) of the upper surface (4), engagement means (10, 110) for temporarily stable, and substantially rotatable, interconnection with grip means (11) associated with the free upper end (12) of a foot (8), of a chosen height. The weight reduction element (1) comprises the foot (8) which has a lower end (23) that is offset with respect to the grip means (11) and to the temporary engagement means (10, 110).
摘要:
A method and apparatus for forming a formwork for a ribbed or waffle concrete slab is provided. The apparatus includes a rectangular block having a ledge around the base, the ledge having a dimension of half the desired width of the base ribs of the concrete slab, and a keystone connector. The keystone connector has an engagement portion configured to attach to an engagement portion on each block. In a method, the blocks are laid out so that the ledges of adjacent blocks are in contact. A keystone connector is then placed at each intersection of four blocks by attaching the respective engagement portions of the keystone connector and each block so that the keystone connector holds each of the four blocks in place relative to one another. The keystone connector is also configured to retain a reinforcing rod laid in the channel between adjacent blocks.