RU73680U1 - COMPLETE REINFORCED CONCRETE BUILDING FRAME - Google Patents

Abstract

The technical solution relates to the field of industrial and civil construction, namely, to the construction of prefabricated monolithic frames of buildings for various purposes.

The technical task is to create a prefabricated reinforced concrete frame of the building, which has low material consumption and requires less labor for its construction due to the design features of its implementation.

This is achieved by the fact that the prefabricated reinforced concrete frame of the building consists of rectangular cross-sectional columns of inner and outer rows and crossbars located on them along the building, and in the outermost rows of the column, the greater side of the cross section is installed along the building, and in the inner rows across the building, the inner columns the rows have cantilevered shelves symmetrically located perpendicular to the longitudinal axis to support the crossbars on them, over the cantilevered shelves in the body of the columns of the inner rows are formed monolithic after m flooring with fine-grained self-compacting concrete with a brand strength not lower than the strength of prefabricated structures, through openings with working reinforcement rods located in them along the column axis, with a height of at least twice the height of the crossbar, which has end openings limiting the opening to support the cantilevered shelf of columns, as well as half heights longitudinal trimming in the upper part for bearing, with mating from the end, hollow core slabs and reinforcing outlets placed in the openings of the columns of the inner rows above and interconnected by overlays made of reinforcing steel or metal connecting parts, while the openings in the columns of the extreme rows for supporting the extreme crossbars have a vertical mark below the mark of the openings of the columns of the inner rows on the thickness of the internal crossbars. At the same time, the sections of the inner columns are rectangular in shape with an aspect ratio of 1: 2 to 1: 4, the cantilever shelves of the inner columns are made with a length of each console of 150-200 mm, the openings with reinforcing bars placed in them

the rods are made up to a height of 600 mm, the internal crossbars have a ratio of height to section length from 1: 4 to 1: 6 and have protrusions of 120-180 mm with a width of 150 mm, extending beyond the ends and located at the ends of the section, the length of the reinforcing outlets from the end the crossbar makes up to 150 mm.

Description

The proposed technical solution relates to the field of industrial and civil construction, namely, to the design of prefabricated and prefabricated monolithic frames of buildings for various purposes.

Known frame, consisting of prefabricated or monolithic columns of rectangular cross-section and multi-hollow slabs, combined into a single system of monolithic reinforced concrete bearing connecting beams. Crossbars in mutually perpendicular directions are passed through columns and are rigidly connected with the latter in these nodes. For this purpose, through openings with full exposure in these places of the working reinforcement are made in prefabricated columns to the height of the crossbars at the level of the floors. The support of multi-hollow slabs on the bearing crossbars is provided by means of concrete dowels formed in the cavities open at the ends of the plates during the laying of monolithic concrete crossbars. At the ends of multi-hollow slabs, releases of their working reinforcement are provided, which are placed in monolithic load-bearing crossbars (A.I. Mordich et al., “Unified Open Frame Building System with Flat Ceilings, Series B1.020.1-7”, Architecture and Construction No. 6, 1999 Minsk).

This frame does not have the required adaptability due to the need to use for its construction inventory of installation and technological equipment, as well as additional labor and energy costs for the production of concrete work.

The closest known is the reinforced concrete frame of the building, including columns of the extreme and inner rows, equipped with grooves for installing the ends of the flat rectangular crossbars, while the crossbars of the inner rows are made with shelves for supporting the floor slabs, and the columns are made in a rectangular section, the columns of the outermost rows are installed with the larger side sections along the wall of the building, and the columns of the inner rows - perpendicular to the length of the building, the crossbars of the extreme rows are made with a width equal to or greater than twice the thickness of the count nna, and installed in the slots of the extreme rows of columns

with offset relative to the columns or without it, the crossbars of the outermost rows are installed below the crossbars of the inner rows by the thickness of the crossbar (RU patent No. 2202026, 2003).

This frame is quite material intensive and does not meet modern requirements for progressive collapse.

The technical task is to create a prefabricated reinforced concrete frame of the building with a minimum amount of monolithic work that meets the requirements for progressive collapse, has low material consumption and requires less labor for its construction due to the design features of its implementation.

This is achieved by the fact that the prefabricated reinforced concrete frame of the building consists of rectangular cross-sectional columns of inner and outer rows and crossbars located on them along the building, with the greater side of the cross section along the building in the outer rows of the column and inner columns across the building in the inner rows the rows have cantilevered shelves symmetrically located perpendicular to the longitudinal axis to support the crossbars on them, over the cantilevered shelves in the body of the columns of the inner rows are formed monolithic concrete openings with working reinforcement rods located in them along the column axis, with a height of not less than twice the height of the crossbar, which has end opening protruding bounding on the column shelves, as well as half-height longitudinal pruning in the upper part for supporting, with a reciprocal pruning from the end hollow core slabs and reinforcement outlets placed in the apertures of columns of internal rows above the shelves and interconnected by overlays made of reinforcing steel or metal fittings, while the openings in lonnah outer rows for bearing outer crossbars have a vertical mark below the openings columns inner rows on the thickness of the internal crossbars. At the same time, the cross sections of the inner columns are rectangular with an aspect ratio of 1: 2 to 1: 4, the cantilever shelves of the inner columns are made with a length of each console of 150-200 mm, the openings with reinforcing rods placed in them are made up to 600 mm high, the inner crossbars have a ratio of height to section length from 1: 4 to 1: 6 and have protrusions on

120-180 mm with a width of 150 mm, extending beyond the ends and located at the edges of the section, the length of the reinforcing outlets from the end of the crossbar is up to 150 mm.

Figure 1 presents a top view of a prefabricated reinforced concrete frame of the building;

Figure 2 is the same with hollow core slabs;

Figure 3 is a section along aa in figure 2;

Figure 4 - a fragment of a prefabricated reinforced concrete frame of the building, the node supporting the crossbar on the columns of the inner row;

Figure 5 is a fragment of a prefabricated reinforced concrete frame of the building, the node supporting the crossbar on the columns of the extreme row;

Figure 6 is a section along aa in figure 4 and a section along bb in figure 5. The prefabricated reinforced concrete frame of the building consists of columns 1, 2 and crossbars 4, 5, respectively, of the extreme and inner rows. The sections of the columns of the 2 inner rows are rectangular in shape with an aspect ratio of 1: 2 to 1: 4. The columns are installed on the larger side of the section: in the extreme rows, along the building, and in the inner rows across the building. In the inner columns 2, perpendicular to the longitudinal axis, cantilever flanges 10 are 150 to 200 mm in size to support the crossbars 5 located along the building. Immediately above the cantilever shelves in the body of the columns there are through openings 3 up to 600 mm high, in which there is no concrete, and rigidity is provided by reinforcing bars 11 located along the axis of the columns. Internal crossbars 5 have a ratio of height to section length from 1: 4 to 1: 6. The internal crossbars 5 have protrusions 120-180 mm and a width of 150 mm extending beyond the ends and located at the edges of the section, designed to support the shelves of 10 columns 2. In addition to the protrusions, the ends of the crossbars have reinforcing outlets 13 up to 150 mm long, which are included in the installation openings 3 columns 2 located above the shelves and are interconnected by plates 6 of reinforcing steel or metal fittings. After mounting the crossbars, the openings of 3 columns 2 are monolithic with fine-grained self-compacting concrete with a brand strength not lower than the strength of prefabricated structures. The openings 3 in the extreme columns 1 for supporting the 9 extreme crossbars 4 have a vertical mark below the thickness of the openings 3 of the inner columns 2

crossbars 5. The extreme columns 1 do not have symmetrical cantilever shelves for supporting the crossbars 4, and the extreme crossbars 4 do not have protrusions at the ends. The extreme crossbars 4 are supported during installation on the lower edge 9 of the openings 3 of the extreme columns 1, after which the reinforcing outlets 13 are connected from the ends of the crossbars with overlays 6 and the apertures of the extreme columns 1 are monitored according to the type of internal columns 2.

Multi-hollow slabs 7 have in one of the ends of the trimming at half the height of the section in the lower part of the end. The plates 7 are supported by the end parts of the plates having undercut on the supporting parts 8 of the internal crossbars 5, formed by the undercut located on both sides along the length of the crossbar in the upper part of the height. At the other end, the plate 7 rests on the upper plane of the end bolt 4.

This embodiment of the prefabricated reinforced concrete frame of the building can significantly reduce labor costs for the production of works by reducing the volume of work on monolithic concreting. This technical solution of the frame also allows for the unification of the standard sizes of its constituent elements to expand the scope of use of prefabricated and prefabricated-monolithic structures on various other buildings for industrial and civil purposes.

Claims (2)

1. The prefabricated reinforced concrete frame of the building, consisting of rectangular in cross section columns of the inner and outer rows and crossbars located on them along the building, with the greater side of the cross section along the building in the outer rows of the column and in the inner rows across the building, the columns of the inner rows have fine-grained cantilevered shelves symmetrically arranged perpendicular to the longitudinal axis to support the girders on them, over the cantilevered shelves in the body of the columns of the inner rows self-compacting concrete with a brand strength not lower than the strength of prefabricated structures, through openings with working reinforcement rods located in them along the column axis, with a height of at least twice the crossbar height, which has end protrusions that limit the opening to support the cantilevered shelf of the columns, as well as half-height longitudinal cutting in the upper part for support, having mating from the end, hollow floor slabs and reinforcing outlets placed in the openings of the columns of the inner rows above the shelves and connected ezhdu a lining of steel reinforcement or the metal connection parts, wherein the openings in the outer columns for supporting the outer rows have a vertical mark crossbars below openings columns inner rows on the thickness of internal crossbars. 2. The prefabricated reinforced concrete frame of the building according to claim 1, characterized in that the cross-sections of the inner columns are rectangular with an aspect ratio of 1: 2 to 1: 4, cantilever shelves of the inner columns are made with a length of each console of 150-200 mm, openings with the reinforcing bars placed in them are made up to 600 mm high, the internal crossbars have a ratio of width to section length from 1: 4 to 1: 6 and have protrusions of 120-180 mm with a width of 150 mm, extending beyond the ends and located at the section edges, length reinforcing releases from the end of the crossbar is up to 150 mm.