RU104573U1 - FRAME OF BUILDINGS AND STRUCTURES - Google Patents

Abstract

 1. The frame of buildings and structures containing reinforced concrete columns with openings at the level of floors, floor slabs, reinforced concrete crossbars, rigidly interconnected, made with a prestressed lower part having a tray-like shape with flanged edges, monolithic upper part in the form of a monolithic reinforced concrete belt, the lower part of which is placed in the tray, characterized in that the upper part of the monolithic reinforced concrete belt is made with reinforced concrete or concrete dowels located inside parts of floor slabs made in the form of cavities or voids in the manufacture of slabs. ! 2. The frame of buildings and structures according to claim 1, characterized in that the reinforced concrete dowels are made with connecting parts, each of which is connected to the anchor outlets of floor slabs. ! 3. The frame of buildings and structures according to claim 1, characterized in that the reinforced concrete dowels are made with connecting parts, each of which is embedded directly in the concrete monolithic.

Description

The utility model relates to the field of construction and can be used in the construction of residential, public and administrative buildings and structures erected in various areas, including seismic, as well as in the restoration or reconstruction of buildings.

Reinforced concrete frames of buildings and structures are known, containing columns, girders, floor slabs (see, for example, patent description of the Russian Federation patent 2182624, IPC EV 1/20, publication date 05/20/2002).

The lack of similar solutions includes insufficient scope and insufficient level of perception of loads

The closest similar solution is the Frame of buildings and structures containing reinforced concrete columns with openings in the level of overlappings, floor slabs, reinforced concrete crossbars rigidly connected to each other, made with a prestressed lower part having a tray-like shape with flanged edges, monolithic upper part in the form of a monolithic reinforced concrete belt , the lower part of which is placed in the tray (see utility model patent of the Russian Federation 84881, IPC EV 1/20, publication date 07/20/2009).

The disadvantage of the closest analogue is the insufficient scope.

The technical result is expressed in increasing operational reliability.

The essence of the technical solution is expressed in the fact that the frame contains reinforced concrete columns with openings at the floor level, floor slabs, reinforced concrete crossbars rigidly interconnected, made with a prestressed lower part having a tray-like shape with flanged edges, monolithic upper part in the form of a monolithic reinforced concrete belt, the lower part of which is placed in the tray, and differs from the closest analogue in that the upper part of the monolithic reinforced concrete belt is made with reinforced concrete with concrete or dowels located in the internal parts of floor slabs made in the form of cavities or voids in the manufacture of slabs.

The essence of the technical solution is illustrated by drawings, where

figure 1 shows a section of the node connecting parts with a hollow slab and concrete keys;

figure 2 shows a section of the node connecting parts with a hollow plate and reinforced concrete dowels;

figure 3 shows a section of the node connecting parts with a solid slab and concrete dowels;

figure 4 shows a section of the node connecting parts with a solid slab and reinforced concrete dowels.

The frame of buildings and structures contains reinforced concrete columns (not shown conditionally in the drawings) with openings in the level of overlappings, floor slabs 3, reinforced concrete crossbars 1, rigidly interconnected, made with a prestressed lower part having a tray-like shape with flanged edges, monolithic upper part in in the form of a monolithic reinforced concrete belt 5, the lower part of which is placed in the tray. The upper part of the monolithic reinforced concrete belt 5 is made with reinforced concrete or concrete keys 8 located in the inner parts of the floor slabs 3, made in the form of cavities or voids in the manufacture of floor slabs 3 (Figs. 1, 2, 3, 4).

Reinforced concrete dowels 8 can be made with connecting parts 7, each of which is attached to the anchor outlets 6 of floor slabs 3 (Fig. 4).

Reinforced concrete keys 8 can be made with connecting parts 7, each of which is embedded directly in the concrete monolithic, forming a belt 5 of the crossbar 1 (Fig.3).

The connection of reinforced concrete crossbar 1 and floor slabs 3 is carried out in the following order:

- sets the pre-stressed part of the tray-shaped crossbar 1;

- floor slabs 3 are installed on layer 4 of cement-sand mortar;

- additional reinforcement is made by reinforcement 2 of a precast-monolithic crossbar 1;

- install connecting parts 7 overlap;

- make monolithic joint with receiving keys 8.

Pre-stressed parts of the crossbar 1 and the floor slab 3 together serve as a fixed formwork (Fig. 1, 2, 3, 4).

Prefabricated floor slabs 3 can be hollow (1, 3) and full-bodied (2, 4), prestressed and without prestressing. The hollow core slabs 3 are supported on two sides, full-bodied - on two, three and four sides. To form the keys 8 before mounting the hollow core slabs 3 into the voids of the slabs 3, plugs 9 are inserted to a certain depth (Figs. 1, 3). When using full-bodied floor slabs, 3 dowels 8 are formed due to depressions on the lateral surfaces of floor slabs 3 (the number of side surfaces is determined by the conditions of support of floor slab 3 on two, three, or four sides). The depressions are performed in the process of manufacturing floor slabs 3. The reliability of the node supporting the floor slabs 3 on the crossbar 1 is increased due to the formation of concrete (figure 1, 2) or reinforced concrete keys 8 (figure 3, 4). After the concrete has gained strength, the dowels 8 work for shear and the load is perceived both by supporting the crossbar 1 on the shelf and by using the dowels 8. When using prefabricated floor slabs 3 to create a hard drive of overlap, the joints between the floor slabs 3 are monolithic. Reinforcement of the dowels 8 is carried out by the connecting part 7 (Fig. 3, 4), which can be attached to the anchor outlets 6 (Fig. 4) or embedded directly in the concrete monolithic (Fig. 3). When reinforcing the dowels 8 with connecting parts 7 to ensure their anchoring, the continuity of the overlapping disk is created, which makes it possible to use them in seismic areas.

Claims (3)

1. The frame of buildings and structures containing reinforced concrete columns with openings at the level of floors, floor slabs, reinforced concrete crossbars, rigidly interconnected, made with a prestressed lower part having a tray-like shape with flanged edges, monolithic upper part in the form of a monolithic reinforced concrete belt, the lower part of which is placed in the tray, characterized in that the upper part of the monolithic reinforced concrete belt is made with reinforced concrete or concrete dowels located inside parts of floor slabs made in the form of cavities or voids in the manufacture of slabs. 2. The frame of buildings and structures according to claim 1, characterized in that the reinforced concrete dowels are made with connecting parts, each of which is connected to the anchor outlets of floor slabs. 3. The frame of buildings and structures according to claim 1, characterized in that the reinforced concrete dowels are made with connecting parts, each of which is embedded directly in the concrete monolithic.