RU73682U1 - BUTT FLOOR JOINT CONNECTION - Google Patents

Abstract

The utility model relates to the construction, namely, to the construction of skeletons of multi-storey buildings and can be used in the construction of interfaces between floors and columns.

The technical problem solved by the utility model is to increase the bearing capacity of the butt connection of the floor to the column.

The butt connection of the floor to the column, including the concrete pipe column, the floor and the column plate, is characterized in that distribution pillows made in the form of a cylinder and installed in the upper and lower parts of the column are made on the column plate and under the column plate, the column plate is solid and rigidly connected anchor rods with distribution pads, and the gap between the column plate and the upper and lower parts of the column is 3-5 mm

Description

The utility model relates to the construction, namely, to the construction of skeletons of multi-storey buildings and can be used in the construction of interfaces between floors and columns.

A butt joint is known for the capitals of bezel-free reinforced concrete floors with a column according to USSR author's certificate No. 876907, ЕВВ 5/43, 1981, containing the central part of the plate with an opening widening downwards and the reinforcement outlets of the column and plate, a reinforcing frame protruding from under the plane of the capitals in the form of a truncated pyramid or a truncated cone and columns and capitals attached to the outlets of the reinforcement, and the column in the joint zone is profiled with alternating grooves and a crest and a joint cavity omonolichena.

The disadvantage of this compound is the high labor costs in the manufacture of capitals.

The closest analogue to the claimed object is the butt connection of the bezel-less floor with the column (RF patent No. 2179612, ЕВВ 5/43, 5/44), including the column in the form of a pipe filled with concrete, the overlap and the popliteal plate, made in the form of a support ring, rigidly fixed to the column by means of scarves. In this case, the support ring is connected directly to the pipe.

A disadvantage of the known butt connection of the floor to the column is its low bearing capacity due to the transfer of pressure from the floor plate only to the steel pipe, as a result of which, under load, the steel pipe is overloaded and the concrete core is underloaded.

The technical problem solved by the utility model is to increase the bearing capacity of the butt joint of the floor with

the column.

The technical problem is solved in that in the known butt connection of the floor to the column, including the concrete pipe, the floor and the column plate, in contrast to the closest analogue, distribution pillows are made on the column plate and under the plate above the column and are installed in the upper and lower parts of the column, the column plate is made of solid and rigidly connected by anchor rods with distribution pads, and the gap between the column plate and the upper and lower parts of the column ulation of 3-5 mm.

The essence of the proposed utility model is that to improve the working conditions and increase the bearing capacity of the column made distribution pillows, which serve to uniformly transfer the load to the concrete core of the column. Anchor rods rigidly connect the column plate with the lower and upper distribution pads and the concrete core of the column, which allows for a rigid connection of the upper and lower parts of the column. The gap between the column plate and the upper and lower parts of the column is 3-5 mm, this ensures that there is no contact between the steel shell and the column plate at rated loads, which increases the bearing capacity of the butt joint of the floor to the column. With a decrease in the gap of less than 3 mm, the bearing capacity of the butt joint decreases, due to the fact that the concrete core compresses under load and a contact appears between the steel shell of the column and the column plate. With an increase in the gap of more than 5 mm, it is impractical due to the fact that the deformation of the concrete core does not exceed the calculated value, which reduces the strength of the column and the butt joint.

The essence of the utility model is illustrated by drawings, where:

- figure 1 shows the butt connection of the overlap with the column in a perspective view;

- in Fig. - 2 section aa in Fig.1;

- in Fig. - 3 section BB in Fig.2;

The butt connection of the floor to the column includes the lower 1 and upper 2 parts of the column with a steel shell 3 and a concrete core 4. floor 5 supported on a pillar plate 6, an upper distribution pad 7 and a lower distribution pad 8. Anchor rods 9 rigidly connect the column plate 6 with the lower distribution pillow 8, the upper distribution pillow 9 (FIG. 3) and the concrete core 4 of the column 1.

The assembly of the inventive butt joints is as follows:

Pre-connect the column plate 6, made, for example, in the form of a square, rectangle or circle, with the lower distribution cushion 8 and the upper distribution cushion 7 by means of anchor rods 9. The bottom part 1 of the steel shell 3 of the column is filled with concrete and the column column 5 is installed on it providing a gap of 3-5 mm between the column plate 6 and the steel shell 3 of the column 1. After that, the upper part 2 of the steel shell 3 is installed on the column plate 6 with the necessary clearance of 3-5 mm between it and the column plate 6, after which the inner cavity of the steel shell 3 of the upper part 2 of the column is also filled with concrete.

The claimed butt joint works as follows.

Overlap 5 when loaded with its design load transfers transverse force to the column plate 6. In this case, the transverse force through the lower distribution cushion 8 is transmitted to the concrete core 2 of the lower part 1 of the column, which significantly increases its bearing capacity. The force from the upper part of the column 2 is transmitted to the column plate 6 by means of the upper distribution pad 7, which also increases the bearing capacity of both parts 1, 2 of the column and its butt connection with the floor slab 5. Anchor rods 8 fasten the lower

distribution cushion 8 and upper distribution cushion 7 to the column head plate 6 and connect the upper 2 and lower 1 parts of the column cut by the knee plate 6, providing the necessary rigidity of the butt joint and at the same time strengthening the joint zone of the parts of the column 1, 2 with overlap 5.

Thus, the claimed design of the butt joint allows you to increase its bearing capacity, compared with the prototype, by 20-25%.

Claims (1)

The butt connection of the floor to the column, including the concrete column, the floor and the column plate, characterized in that the distribution pillows are made on the column plate and under the column plate, made in the form of a cylinder and installed in the upper and lower parts of the column, the column column is solid and rigidly connected anchor rods with distribution pads, and the gap between the column plate and the upper and lower parts of the column is 3-5 mm