Static structures (e.g. – buildings) – Cast in situ concrete barrier with laterally projecting... – Block-type filler between sustainers
Patent
1996-09-06
1998-08-25
Kent, Christopher
Static structures (e.g., buildings)
Cast in situ concrete barrier with laterally projecting...
Block-type filler between sustainers
52320, 52380, 52576, 5274214, 5274513, 527452, E04B 536
Patent
active
057972303
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an element for use in making a reinforced concrete structure of the kind having filler bodies therein.
BACKGROUND ART
The International PCT-application No. WO 92/06253 discloses an element of the kind referred to above. In this known structure, the filler bodies used for forming cavities in the structure are in the form of closed hollow spheres, ovoids or similar rounded bodies.
With filler bodies of the shapes referred to, a lower shuttering is absolutely necessary, and--due to the rounded shape of the filler bodies--concrete will unavoidably penetrate between the filler bodies and the lower shuttering. For this reason, during grouting or casting, unhardened concrete will tend to make the filler bodies "float" upwardly, so that it is necessary to anchor the reinforcing element firmly.
DISCLOSURE OF THE INVENTION
It is the object of the present invention to provide an element of the kind referred to above, which does not suffer from the disadvantages described above, and this object is achieved with such an element, according to the present invention as described below.
With this arrangement, no concrete will penetrate below the filler bodies, so that the lower part of the final concrete structure will comprise no more concrete than that immediately surrounding the rods in the lower reinforcing mesh, and the flanges on the filler bodies also co-operate to prevent unhardened concrete from penetrating below the filler bodies and making them "float", at the same time forming a lower shuttering, so that the usual lower shuttering may be dispensed with.
DE-A-2,633,526 discloses a trough-shaped shuttering body or element of glass-fibre-reinforced concrete for making ribbed or cross-ribbed structures of steel-reinforced concrete. In FIGS. 2-2c and the associated text on page 7, 2nd paragraph, this documents discloses the use of a number of shuttering bodies 1 shaped like inverted troughs with edge flanges 2 extending towards each other, but leaving a gap 4 in between, said gap having to be closed by separate means, such as a wooden lath, to prevent the concrete from running out. The shuttering bodies 1 are held in their proper relative positions by a reinforced concrete grid 3,6. This document does not disclose the use of upper and lower reinforcing meshes co-operating with filler bodies in the manner set forth herein.
The present invention also relates to a filler body for use in making a reinforcing element according to the invention, and this filler body is constructed as set forth herein.
Finally, the present invention relates to a method for making a reinforced concrete structure. This method is of the kind set forth herein.
Advantageous embodiments of the element and the filler body for use in making it are set forth below.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following detailed portion of the present description, the invention will be explained in more detail with reference to the drawings, in which
FIG. 1 is a perspective view of a part of a combined reinforcement and shuttering element according to the invention,
FIG. 2 is a top view of an element, in which filler bodies have been removed from some of the squares, placed in readiness for grouting or casting,
FIG. 3 is a vertical section along the line III--III in FIG. 2 and showing the finished cast concrete structure after the shuttering has been removed,
FIGS. 4 and 5 are views corresponding to FIGS. 2 and 3 respectively showing a slightly modified exemplary embodiment,
FIG. 6 at an enlarged scale shows some details of the filler bodies used in the exemplary embodiment of FIGS. 4 and 5, and
FIG. 7 is a sectional view resembling FIG. 6, but shows an exemplary embodiment having twice as many upper reinforcing rods.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The part of a combined reinforcement and shuttering element shown in perspective in FIG. 1 is a rigid body consisting of and 2, and secured at the top to the upper mesh constituted by the rods 1a and 2a, said securing being achieved by me
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patent: 3624978 (1971-12-01), Skinner
patent: 3640040 (1972-02-01), MacLean, III. et al.
patent: 4116415 (1978-09-01), Ward
patent: 4495744 (1985-01-01), Carl
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