SU1573120A1 - Method of reinforcing ferroconcrete plate of covering - Google Patents

Abstract

The invention relates to the construction and can be used in the reconstruction and repair of buildings and structures in the conditions of the existing enterprise. The aim of the invention is to expand the application by eliminating the dismantling of the equipment. A method of reinforcing a reinforced concrete slab includes forming a shield from a profiled sheet with laying an even layer of movable concrete with a draft of a cone of 7-8 cm, then placing a second profiled sheet above it, making grooves under the slab in the ribs, evenly raising the shield with jacks and pressing it to the bottom of the plate. 1 hp f-ly. 6 Il.

Description

The invention relates to the construction, in particular to the strengthening of monolithic reinforced concrete ribbed floor slabs, and can be used in the reconstruction and repair of buildings and structures in the conditions of the existing enterprise.

The aim of the invention is to expand the application by eliminating the dismantling of the equipment.

FIG. Figure 1 shows a reinforced concrete slab before reinforcement, a cross section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - reinforced concrete slab during its reinforcement, cross section; in fig. 4 shows a section BB in FIG. 3; in fig. 5 shows the node I in FIG. 3; in fig. 6 — node II in FIG. four.

The amplification method is carried out as follows.

In the reinforcement zone, directly below the reinforced section of the reinforced concrete slab 1, a shield 2 is placed, which is made of two profiled on the platform under the slab i; sheets. The bottom profiled sheet 3 with anchors is placed on the beams 4, which are placed on the jacks 5. Then on the sheet 3 the layer of concrete 6 is evenly laid with a plastic consistency with a draft cone ;; 7-8 : above, respectively, the profile of the bottom sheet 3, is placed the sheet 7. Then, in the ribs 8 under the reinforced slab 1, slots 9 are made with a width of 30-50 mm, the length equal to the length of the section to be reinforced. The tare width of the groove 9 is adopted from the condition of providing the required length of the support plate 2 and the size of the protective concrete in the ribs 8. The width of the groove 30-50 mm is sufficient for a reliable support of the shield 2 and allows exposing the reinforcement of the ribs 8. Shield 2 placed in the beams 4, they lift evenly and horizontally with the jacks 5 and press them to the plate 1. At the same time, the concrete fills the space between the sheets 3 and 7 and is squeezed into the grooves 9 of the fins 8, and after the concrete has been set up, solid SS

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with

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; those jacks 5 removed. To prevent the extrusion of concrete from the free ends of the shield 2, it is compacted with a rigid element — an angle of 10 — with an elastic gasket. To accelerate the reinforcement process, after pressing the shield 2, 5 can be fixed on the ribs 8 of the console 11, which attach 12 ribs 8 to the transverse reinforcement. The shield 2 is supported on these consoles. temporary supports from the bottom of the ceiling, laying concrete on the shield and removing temporary supports after concrete hardening, characterized in that, in order to expand the application by eliminating the dismantling of the equipment, under the overlay rhythmically movable layer concrete slump of 7-8 cm and then mark overlap allows to reduce the labor-intensive w scheniem over it a second profiled

the bone works with gain and increased efficiency by providing visual control when making gains.

Claims (2)

1. A method for reinforcing a reinforced concrete slab, including the placement of schi15 the sheet, the grooves under the slab in the ribs are overlapped along the reinforcement length, after that the shield with the jacks is lifted evenly and pressed against the bottom of the slab, and after the concrete is hardened in the slots, the jacks are removed. 2. A method according to Claim 1, characterized in that after pressing the shield against the plate, consoles are fixed to support the shield. BUT ft W / UL / / 6U / f / Ji. / & T five L 7 / / That under the ceiling, raising the shield and fixing it with temporary supports from the bottom overlap, laying the concrete onto the shield and removing the temporary supports after the concrete has hardened, characterized in that, in order to expand the application by eliminating the dismantling of the equipment, under the overlay onto the shield in the form of profiled sheet is laid evenly layer of rolling concrete with a draft of a cone of 7-8 cm with the subsequent placement of a second profiled above it over the second profiled above 15 the sheet, the grooves under the slab in the ribs are overlapped along the reinforcement length, after that the shield with the jacks is lifted evenly and pressed against the bottom of the slab, and after the concrete is hardened in the slots, the jacks are removed. 2. A method according to Claim 1, characterized in that after pressing the shield against the plate, consoles are fixed to support the shield. BUT h7 //// 7/7777777 //////////// A-l Ohno & Х - ЛЛ У У2Ј -Г - /; г. УаК9 & г Х-У1Щ mention. 2 kA 1 B one . //. / .LUTSU- LL; / U A pfi // / /    r f EgeR shch 6 sh I L 6