RU2706984C1 - Column connection assembly with crossbar - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to construction, namely, to assembly of column with crossbar. Unit includes embedded part in end part of crossbar, embedded part in column and connecting detachable console containing support part and locking plate with holes for bolts connecting locking plate with support part and embedded part of column. Support part is made in the form of two bushings installed in the seat sockets of the embedded part of the string, having a conical mounting surface and a threaded hole in the bottom part. On the outer surface of each bushing on the side of the mounting end the mating conical surface is made. Each sleeve is fixed by means of a bolt passed through the hole of the stop plate and an axial hole of the bushing and fixed in the threaded hole of the mounting seat.

EFFECT: technical result is simplification of assembly of components while maintaining simplicity and reliability of connection.

1 cl, 6 dwg

Description

FIELD OF THE INVENTION

The invention relates to the construction, mainly to prefabricated reinforced concrete frames of buildings and structures.

State of the art

A knot for connecting a crossbar with a reinforced concrete column is known, including a mounting table installed in the technological recess of the column, on which the lower part of the crossbar is mounted, fastened with a high-strength pin passed through the holes of the end plates of the mounting table and the embedded part of the crossbar (see patent for utility model RU 155481 IPC: Е04В1 / 38, published on 10/10/2015).

Known support node connecting the crossbar with a reinforced concrete column, including a embedded part in a reinforced concrete column with a socket for a removable support console, made with a spike for fixing in the said socket, and a embedded part of the crossbar forming a mounting slot for hanging the crossbar on the supporting console (see patent for Utility model RU 114697, IPC: Е04В1 / 38, published on 04/10/2012).

As the closest analogue, by the presence of signs similar to the essential features of the claimed technical solution, a connection node for horizontal and vertical frame elements (beams and columns) is adopted, the design of which is disclosed in US patent 7213376, IPC: Е04В1 / 21, Е04В1 / 38, publ. 05/08/2007

According to the description of the invention to US Pat. No. 7,213,376, the known assembly comprises embedded parts in the column and in the end part of the crossbar and a detachable console connecting them, consisting of a support part and a retaining plate with holes connected to each other and to the embedded part of the column by means of bolts. The bolts pass through the coaxial through holes of the retaining plate and the supporting part and are fixed in the threaded holes made in the embedded parts of the column.

The known site provides ease of connection of the column with the crossbar, which is mounted with support on the console, which is included in the mounting slot formed by the embedded part on the end of the crossbar. The locking plate engages with the end plate of the embedded part of the bolt, excluding the sliding of the bolt from the console.

The reliability of the node in the known solution is ensured by the fact that corrugations (grooves) are formed on the mating surfaces of the console and the embedded part of the column, forming many joints of the protrusion-groove type, which ensure uniform load transfer to the embedded part of the column.

The disadvantage of this design solution is the complexity and high requirements for the accuracy of manufacturing corrugated surfaces, which involves the use of special precision equipment and the need to attract highly qualified specialists.

The present invention aims at eliminating the aforementioned disadvantages.

The technical result achieved is to simplify the manufacture of assembly elements by increasing the manufacturability of the structure and reducing the requirements for accuracy and repeatability of dimensions, while maintaining the simplicity and reliability of the connection.

Disclosure of invention

This result is achieved due to the fact that in the node connecting the column to the crossbar, including the embedded part in the end part of the crossbar, the embedded part in the column and the detachable console connecting them, containing the supporting part and the locking plate with holes for bolts connecting the locking plate to the supporting part and the embedded part of the column, according to the claimed invention, the supporting part is made in the form of two bushings, each of which is installed in the seat, formed in the embedded part of the column having threads hole in a bottom portion, and is fixed by a bolt passed through the hole of the locking plate and the axial hole of the sleeve and secured in the threaded hole receiving hole, wherein the sleeve and the bearing seat formed with mating conical seating surfaces.

The proposed technical solution can be used to connect any horizontal and vertical structural elements, i.e. the terms "crossbar" and "column" are understood in their broadest interpretation.

Significant differences of the proposed technical solution from the closest analogue are:

- execution in the embedded parts of the column of landing nests (recesses, through holes, recesses) with threaded holes in the bottom;

- the implementation of the supporting part of the console is a composite of two bushings, each of which is installed in the corresponding seat socket and fixed by means of a bolt passed through the hole of the locking plate, the axial hole of the sleeve and fixed in the threaded hole of the seat socket;

- the implementation of the mating surfaces of the seating nests and bushings in the form of mating conical surfaces, providing the possibility of the formation of a conical landing.

The basis of the proposed constructive solution of the connection node is the use of bodies and surfaces of revolution. Both the bushings forming the supporting part of the console and the seating nests in the embedded part of the column are bodies of revolution, the manufacturing technology of which, unlike corrugations, is not difficult and is carried out on simple machines.

The mating seating surfaces of the bushings and landing nests are mating conical, that is, with the same nominal angles of the cones, and form a conical landing. Such a fit provides a high joint density with relatively low requirements for dimensional accuracy of mating parts.

As a result, a significant simplification of the manufacturing technology of the elements of the connection, reducing the complexity of production, the absence of the need for complex high-precision equipment and highly qualified specialists.

The upper sleeve accepts vertical loads from the crossbar, the lower one - loads from torque. The joint work of the upper and lower bushings provides a locking plate, which, unlike the prototype, not only performs its direct function and eliminates the sliding of the bolt from the console, but also combines the bushings into a single mechanism, contributes to the inclusion of the lower bush in the work and transferring part of the vertical loads to it .

The diameter of the axial hole of each sleeve is made larger than the outer diameter of the bolt, which allows you to compensate for possible errors in the location of the threaded hole of the mounting socket and simplifies installation.

Brief Description of the Drawings

The essence of the technical solution is illustrated by drawings, which show:

in FIG. 1 - node connecting the column with the crossbar, general view with a partial section;

in FIG. 2 - section aa with figure 1;

in FIG. 3 - embedded part of the column;

in FIG. 4 - the cantilever part of the node in disassembled form;

in FIG. 5 is a cross-section BB of FIG. 4;

in FIG. 6 - view of the crossbar on the end with the embedded part.

The implementation of the invention

The node connecting the column with the crossbar includes (see Fig. 1) a embedded part 1 in the end part of the crossbar 2, a embedded part 3 in the reinforced concrete column 4 and the console 5 connecting them.

Crossbar 2 and column 4 are prefabricated prefabricated reinforced concrete structures. Embedded parts 1 and 3, equipped with anchor rods (shown by thin lines), are installed in the crossbar 2 and the column 4, respectively, at the manufacturing stage.

The console 5 consists of a support part, made in the form of two bushings 6 and 6´, and a retaining plate 7 (see Fig. 2), connected to each other and to the embedded part 3 of the column 4 by means of bolts 8.

To install the sleeves (6 and 6´) in the embedded part 3 of the column, the mounting slots 9 and 9´ are made (see Fig. 3) with a conical lateral (working, landing) surface 10 and with threaded holes 11 in the bottom. The depth of the landing slots 9 is determined based on the calculated loads on the console 5.

The unit is easily and simply mounted in a building site. Sleeves 6 and 6´, respectively, are installed in the seats 9 and 9´ (respectively, see Fig. 4).

On the outer surface of each sleeve 6 (6´), from the side of the landing end (base), a conical surface 12 is formed, which corresponds to the mating conical surface 10 of the mounting socket 9 (9´), which ensures the formation of a conical landing.

A lock plate 7 is laid over the bushings with through holes 13 made therein, while the holes 13 of the plate 7 are placed on the same axis as the holes 14 of the bushings 6 (6´). Through coaxially placed holes 13 of the retaining plate 7 and axial holes 14 of the bushings 6 (6´), bolts 8 are passed, which are fixed in the threaded holes 11 of the corresponding mounting seats. Washers 15 can be placed under the heads of the bolts 8.

The diameter of the axial hole 14 of the sleeve 6 is larger than the diameter of the hole 13 of the plate 7 and the outer diameter of the bolt 8 (see Fig. 4, 5), which allows you to compensate for possible errors in the location of the threaded hole and to ensure the connection of parts. All parts of the assembly are highly technological and can be manufactured in the conditions of the simplest production, using widespread equipment.

In the process of the assembly, the upper sleeve 6 of the console 5 receives vertical loads from the crossbar 1. Due to the high density of the connection provided by the conical working surfaces 10 and 12, and the absence of backlash, the load is evenly transferred from the console 5 to the embedded part 3 of the column, while the occurrence of foci is excluded stress concentration.

The locking plate 7 engages the lower sleeve 6´ in operation, providing part of the vertical loads to it, while the lower sleeve 6´ eliminates the appearance of torque.

The embedded part 1 of the crossbar 2 is made with the formation of a mounting slit 16, open at the bottom and at the end of the crossbar (see Fig. 1, 2), while from the end the mounting slit 16 is limited to a U-shaped plate 17 with an open groove 18 (see Fig. 6). The open groove 18 of the plate 17 has a width less than the width of the locking plate 7. The lateral portions of the plate 7, protruding on the sides of the bushings 6 and 6´, engage with the edges of the open groove 18, preventing the crossbar from sliding off the console.

Claims (2)

1. The node connecting the column with the crossbar, including the embedded part in the end of the crossbar, the embedded part in the column and connecting the detachable console containing the supporting part and the locking plate with holes for bolts connecting the locking plate with the supporting part and the embedded part of the column, characterized in that the supporting part is made in the form of two bushings, each of which is installed in the seat, formed in the embedded parts of the column having a threaded hole in the bottom, and fixed by means of a bolt, p lowered through the hole of the locking plate and the axial hole of the sleeve and secured in the threaded hole receiving hole, wherein the sleeve and the bearing seat formed with mating conical seating surfaces. 2. The node according to claim 1, characterized in that the diameter of the axial hole of each sleeve is larger than the outer diameter of the bolt.

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