RU61306U1 - REINFORCED CONCRETE MONOLITHIC COVERING - Google Patents

Abstract

The invention relates to the field of construction and can be used in the construction of prefabricated and monolithic ceilings and coatings of buildings and structures for various purposes. An object of the invention is the creation of a monolithic reinforced concrete slab structure, supported along the contour, or on free-standing supports with minimal consumption of concrete and reinforcement while maintaining the required performance. The stated technical problem is solved by the fact that in the proposed solution, liners are installed in the plate with gaps between themselves in the longitudinal and transverse directions. In addition, the liners are made in the form of an elastic shell filled with air under pressure. In addition, the liners are made full of materials other than the material of the slab. In addition, the liners in the plan are made in the form of either a square, or a rectangle, or an oval.

Description

The invention relates to the field of construction and can be used in the construction of prefabricated and monolithic ceilings and coatings of buildings and structures for various purposes.

Monolithic slabs are known, described in the book "Engineering Structures" edited by Bergen RI, M., Higher School, 1989, pp. 228-231. They have a continuous cross section, they are reinforced, as a rule, by non-tensile reinforcement in the form of grids consisting of working and mounting rods. The working reinforcement is laid in the stretched zones of the plate along the span in accordance with the diagram of bending moments. Mounting reinforcement is located across the span and serves to ensure the design position of the working rods, the perception of shrinkage and temperature deformation of concrete, the distribution of concentrated loads acting on the plate over a large area.

The disadvantage of such slabs is the fact that the strength of concrete in their middle zone is underutilized, which leads to an unreasonable increase in the weight of the slabs and to overuse of concrete and reinforcement and, consequently, to an increase in the cost of construction.

Known frame building according to the patent of the Russian Federation No. 2173750, class. E 04 B 1/18, 2001, adopted by the applicant for the prototype. In it, the ceilings and coatings are made in the form of a precast-monolithic slab, inside which there are hollow core elements between the columns and parallel to one of the axes of the building. Void-forming elements are made, for example, either with blind or with through voids, and engineering networks are located in the part of through voids. Void-forming elements are installed with a step by which channels are formed into which the reinforcing cages are laid.

This design, although it is more economical in comparison with a solid plate, has the disadvantage that it does not correspond to the spatial stressful nature of the plate when it is supported along a contour or on separate supports, and in this sense is not optimal.

An object of the invention is the creation of a monolithic reinforced concrete slab structure, supported along the contour, or on free-standing supports with minimal consumption of concrete and reinforcement while maintaining the required performance.

The stated technical problem is solved in that in the proposed solution, liners are installed in the plate with gaps between them in the longitudinal and transverse directions.

In addition, the liners are made in the form of an elastic shell filled with air under pressure.

In addition, the liners are made full of materials other than the material of the slab.

In addition, the liners in the plan are made in the form of either a square, or a rectangle, or an oval.

Figure 1 shows a plan of a section of the ceiling, supported on columns;

Figure 2 is a plan of the section of the floor, supported along the contour;

Figure 3 is a section aa in figure 1, a cross-section of a ceiling supported on columns;

In Fig.4 is a section bB in Fig.2, a cross section of the overlap, supported along the contour;

In Fig.5 - node I in Fig.3, the placement of the liners inside the slab.

Reinforced concrete monolithic overlap consists of supporting supporting structures made in the form of either columns 1 or along the contour 2 of the bearing walls and floor slab 3. Inside the floor slab 3 there are liners 4 which are made blind and isolated from each other by gaps 5. Gaps 5 are made in longitudinal and transverse directions. In an ideal embodiment, the liners 4 are placed in the slab 3 in mutually perpendicular directions. In the upper and lower shelves of the floor slab 3 there are reinforcing meshes 6 and 7, respectively, and in the interval 5, the reinforcing frame 8 is also installed in the longitudinal and transverse directions. Moreover, in the spaces 5 between the inserts 4 made ribs 9 of the material of the slab 3 in the longitudinal and transverse directions. In order to save concrete and reinforcement in the manufacture of floor slabs, inserts 4 can be made hollow in the form of a polyethylene or another shell filled with air under pressure, or solid from a material other than the material of the floor slab 3, for example, from low-quality light and heavy concrete, or foam concrete, polystyrene foam, polyurethane foam. In terms of inserts can be made in the form of various geometric shapes: square, rectangle, circle, etc.

Reinforced concrete overlap is as follows.

After the construction of columns 1, or the implementation of supporting structures along the contour 2 of the bearing walls, the formwork of the floor slab 3 is installed, the reinforcing mesh 7 of the lower shelf of the floor slab 3 is mounted. The reinforcing frame 8 is mounted perpendicular to the reinforcing mesh 7 in the longitudinal and transverse directions. Next, on the reinforcing mesh 7 and in the cells formed by the reinforcing cages 8, inserts 4 are installed and the assembly of the internal content of the floor slab 3 is completed by installing the upper reinforcing mesh 6. Then the concrete mixture is poured. After the concrete mixture has hardened, reinforced ribs 9 are formed in the spaces 5 between the inserts 4, located in the plan in the longitudinal and transverse directions, and ideally in mutually perpendicular directions, creating a certain rigidity and strength of the floor slab 3. And the use of inserts 4 allows to reduce concrete consumption , facilitate the construction of the ceiling.

Using the proposed technical solution allowed to create a design of monolithic reinforced concrete floors with minimal consumption of concrete and reinforcement while maintaining the required performance.

Claims (4)

1. Reinforced concrete monolithic overlap containing supporting structures, floor slab, characterized in that in the floor slab liners are installed with gaps between them in the longitudinal and transverse directions. 2. Reinforced concrete monolithic overlap according to claim 1, characterized in that the liners are made in the form of an elastic shell filled with air under pressure. 3. Reinforced concrete monolithic floor according to claim 1, characterized in that the liners are made solid of materials other than the material of the floor slab. 4. Reinforced concrete monolithic overlap according to claim 1, characterized in that the liners in the plan are made in the form of either a square, or a rectangle, or an oval.