RU1828484C - Method for erection of structure - Google Patents

Abstract

Method of manufacturing a building structure by spraying synthetic foam and concrete against the innerside of an inflated form (1) with anchors (3) for reinforcing rods (4) attached to the foam layer (2) which attachment of the anchors (3) takes place by provinding the anchors (3) with parts (9) which can be inserted into the completed foam layer whilst the application of the concrete layers (5), which takes place layer by layer, is performed in such a way that at least one layer is applied over the basis (8) of the anchors (3) prior to attaching the reinforcing rods (4) of the concrete to said anchors (3).

Description

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The invention relates to construction and can be used in the construction of structures mainly domed in the formwork.

The purpose of the invention is to reduce the complexity and labor costs during construction.

Figure 1 shows a fragment of a structure being constructed by the proposed method; Fig. 2 - perforated plate with anchor rods; Fig. 3 - construction steps of the proposed method.

The method of construction is as follows.

The pneumatic formwork -1, made of plastic, is adjusted to the design configuration during the inflation process. A layer of foamed synthetic material 2 is applied by spraying to the inner surface of the pneumatic formwork 1, onto which perforated plates 3 with anchor rods are fixed, to which rods 4 of the reinforcement are attached. To install the anchors, auxiliary reinforcement 4 can be used. The space around the reinforcing rods, which is limited externally by a layer 2 of foamed synthetic material, is filled by spraying with concrete 5. Prior to layer-by-layer building up of concrete layer 5, first, the first concrete layer 5 is applied to the supporting perforated plates 3, and then other layers.

A plastic pneumatic formwork 1 is hermetically connected at a point 6 to a previously prepared base 7. The support perforated plates 3 are made with bends 8 in the form of bent tabs 9 from the material of the plates and perpendicular to the planes of the plates 4. Bends 9 are pressed into the layer of foamed synthetic material 2, Outside the plate 3, anchor rods 10 or rods serving to connect the anchor to the reinforcement bars protrude. Thanks to the application of the first concrete layer 5, said anchors are held firmly in place and are capable of supporting reinforcing bars.

The reinforcement, located at least in horizontal planes, is pre-stretched, which is possible due to the rigid anchoring of the anchors. The pneumatic formwork 1 is inflated to the design position with the help of fans 11. The pneumatic formwork has an air lock 12. Application of foamed synthetic material 2

is carried out by means of a working device 13 with a working platform 14, by means of which a synthetic material 2, for example polyurethane and applying it to the inner side of the outer pneumatic formwork 1 can be supplied using the supply channel and the schematically shown device 16.

In the case where windows are required, auxiliary frames 17 can be mounted on the synthetic layer 2 using anchors. After completion of the construction, which means after curing the concrete surrounding the auxiliary frames, the plastic layer of the mold and the foam layer can be cut out and a real window frame with or without glass is installed in the resulting opening.

After the structure has been erected, the formwork 1 can be removed and used elsewhere.

Spraying the foamed synthetic material onto the inner surface of the pneumatic formwork 1 can be carried out both directly on the entire surface, and it is also possible to spray onto a part of the height of the pneumatic formwork with a layer of concrete, and simultaneously applying synthetic material 2 towards the top of the structure.

Claims (2)

1. A method of erecting a structure, including installing and tightly securing the pneumatic formwork on the base, blowing the pneumatic formwork to the design position, applying layers of foamed resin to its inner surface, fixing plates with anchor rods in the foam, attaching reinforcement to the anchor rods in the foam after applying the first a concrete layer on the foam surface, characterized in that, in order to reduce the complexity and labor costs during the construction of the structure, plates with anchor rods are made with bends cut out from the plate and directed perpendicular to their planes, and lay the plate on the surface of the foam with the introduction of bends inside the foam, followed by applying the first layer of concrete on the surface of the plate, 0 5 0 5 0 5 0 5 0 2. The method according to claim 1, characterized in that pre-stressed reinforcement is installed in horizontal planes. Figure 2. h d