RU179879U1 - Reinforcement of reinforced concrete multi-hollow floor slab - Google Patents

Abstract

The utility model relates to construction, in particular, to reinforcement structures for precast concrete hollow core slabs.

The objective of the utility model is to develop a reinforcement design for a precast concrete hollow core slab, which will reduce the complexity of manufacturing and be used in cramped conditions.

The essence of the utility model lies in the fact that in the reinforcement structure of a reinforced concrete multi-hollow floor slab including a plate, this plate is located in the hollow channel of the plate and is made of fiber-reinforced concrete, while the thickness of the fiber-reinforced concrete plate is selected from the condition:

B≥D / 2, where

B is the height of the fiber-reinforced concrete plate;

D is the diameter of the hollow channel of a hollow core slab.

Description

The utility model relates to construction, in particular, to reinforcement structures for precast reinforced concrete multi-hollow slabs.

A known reinforcement design of a reinforced concrete multi-hollow floor slab, including reinforcing steel pins located in the voids of the plate from the side of its stretched zone, and their fastening elements, which are located in the holes formed in the plate, the puffs are equipped with at least two anchors, the end and central sections of the puff in the holes and the void of the plate are made dowels, the end and central sections of the puff and anchor are monolithic in these keys, each fastening element of the puffs is made in e rendered monolithic in the spline at one end portion of the reinforcing bar (see. Patent RU №171934, MIC E04G 23/02, 21.06.2017 Bul. №18).

The main disadvantage of the described construction is that to install the tightening and to perform the keys, you must make several holes in the upper and lower shelves of the plate. In cramped conditions, this is often not possible. In this case, to make holes in the upper shelf of the slab, it is often necessary to disassemble the roof structure (in the covering plates) or the floor structure in (the floor slabs) beforehand. This significantly increases the complexity of the work.

The closest analogue is the reinforcement structure of a reinforced concrete multi-hollow floor slab, including a groove made in the stretched zone of the slab below the void of the slab, additional reinforcement that is placed in the stretched zone of the slab in the zone of the Slab void or the zone below the slab void, the additional reinforcement is provided with at least two anchors, which are located at the end sections of the additional reinforcement and are installed in the holes made in the locations of the indicated anchors, dowels made at the end and prices swivel sections of additional reinforcement in the holes, groove and void of the slab, end sections of additional reinforcement are monolithic in these keys, reinforced concrete plates connected to the keys are made at the level of additional reinforcement in the areas between the keys (see patent RU No. 2626499, IPC E04G 23/00 , July 28, 2017 Bull. No. 22).

This design has a high complexity, as it requires; penetration of a groove of considerable length in the lower shelf of the plate. In cramped conditions, this is also often not possible.

The objective of the utility model is to develop a reinforcement design for a precast concrete hollow core slab, which will reduce the complexity of manufacturing and be used in cramped conditions.

The essence of the utility model lies in the fact that in the reinforcement structure of a reinforced concrete multi-hollow floor slab including a plate, this plate is located in the hollow channel of the plate and is made of fiber-reinforced concrete, while the thickness of the fiber-reinforced concrete plate is selected from the condition:

B≥D / 2, where

B is the height of the fiber-reinforced concrete plate;

D is the diameter of the hollow channel of a hollow core slab.

The technical result consists in the fact that the reinforcement design of a precast multi-hollow concrete slab reduces the laboriousness and cost of the work performed during its installation, does not entail a violation of the roof or floor structure and can be used in cramped conditions.

A utility model is illustrated in the drawing, where in FIG. 1 shows a reinforcement structure of a precast multi-hollow concrete slab in longitudinal section, and FIG. 2 construction of reinforcing precast multi-hollow concrete slab in cross section.

The reinforcement structure of a reinforced concrete multi-hollow floor slab 1, including plate 2, this plate 2 is located in the hollow channel 3 of plate 1 and is made of fiber-reinforced concrete, while the thickness of the fiber-reinforced concrete plate 2 is selected from the condition:

B≥D / 2, where

In - the height of the plate 2 of fiber concrete;

D is the diameter of the hollow channel 3 multi-hollow plate 1.

To complete the reinforcement structure in the multi-hollow concrete slab 1, a hole 4 is punched. Through hole 4, the fiber-reinforced concrete plate 2 is concreted in the hollow channel 3 using a concrete pump or manually.

Claims (4)

The reinforcement design of a reinforced concrete multi-hollow floor slab, including a plate, characterized in that the plate is located in the hollow channel of the plate and is made of fiber concrete, while the thickness of the plate of fiber concrete is selected from the condition: B ≥ D / 2, where B is the height of the fiber-reinforced concrete plate; D is the diameter of the hollow channel of a hollow core slab.

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