RU2485255C1 - Unit for connection of prefabricated pillar and ceiling slab of girderless capless frame of building - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: unit comprises a prefabricated ceiling slab with a hole in the centre and pillars. The joint of pillars is made by introduction of reinforcement protrusions of the upper floor pillar into holes of the lower floor pillar, with concrete break in the level of the slab plane. The hole in the slab is made in the form of a truncated pyramid that faces upwards with the large base, and the lower one changes into the shape of the regular parallelepiped. Dimensions of the parallelepiped in plan are less than dimensions of the section of the upper face of the lower floor pillar. Upper and lower reinforcement of the slab stretches in the volume of the ceiling slab hole. Connection of the pillars with the slab is made by grouting concrete that filled the volume of the slab opening and the gap between pillars.

EFFECT: improved manufacturability of assembly and power saving as a result of no welding required.

3 dwg

Description

The invention relates to the construction, namely the construction of prefabricated monolithic bezrigelny, capless frame buildings for various purposes.

A knot for connecting a column and a floor slab of a non-bezelless capless building frame is known from the prior art, comprising a prefabricated floor slab with a rectangular hole in which a steel shell is rigidly mounted, and a column passed through the shell with a reinforcement exposed in the shell zone by welding with the shell by steel trapezoidal connecting elements. The connecting element is made in the form of a single or paired plan at a right angle to a rectangular trapezoid mounted normally to the longitudinal axis of the column. The straight lateral rib of the trapezoid is adjacent to the power reinforcement of the column, and the inclined lateral rib is adjacent to the upper part of the steel shell (RU 2203369, 04/27/2003).

Another known node connecting the prefabricated columns and floor slabs contains a floor-mounted prefabricated column, the head of which is made on the sides with bevels and embedded parts, and the prefabricated floor plate is made with holes and bevels, on the upper faces of which embedded parts are placed. The embedded parts of the column and floor slabs are welded by means of a steel plate. Cement glue is placed in the cavity between the bevels of the column and slab (USSR AS 1813145 from 1993 MKI E04B 1/38).

Closest to the claimed technical solution is the node connecting the columns and slabs of the bezelless non-skid building frame containing a prefabricated slab with a rectangular hole in which a steel shell is rigidly mounted, made in the form of two truncated pyramids, paired with each other with their small bases, and missing through the shell a column with exposed reinforcement in the zone of the shell connected to welding with the shell by means of steel rectangular connecting elements com, characterized in that the connecting elements are made in the form of single rectangular plates mounted normally to the longitudinal axis of the column, with the leg of the rectangular plate adjacent to the power reinforcement of the column, and the hypotenuse (inclined side rib) to the upper part of the steel shell (RU 102020, 10.02 .2011).

The technical result is to increase the manufacturability of the installation of the sections of the connection of the columns and floor slabs, as well as energy savings due to the rejection of welding.

The technical result is ensured by the fact that the junction of the prefabricated column and the floor slab of the bezelless capless frame of the building contains columns, the junction of which is a plug connection, with a gap of concrete in the plane of the slab, as well as a prefabricated floor slab with a hole in the form of a truncated pyramid turning into a parallelepiped , the dimensions of the lower face of which in plan are smaller than the dimensions of the section of the column. In the volume of the opening of the floor slab, the upper and lower reinforcement continuously passes.

The technical result provided by the given set of features is to increase the manufacturability of the installation of the nodes of the connection of the prefabricated column and floor slab.

This is achieved due to the fact that the junction of the prefabricated columns and the floor slab of the bezelless capless building frame contains a prefabricated floor slab with a hole in the center and columns, the joint of which is made by the outlet of the reinforcement of the upper floor column into the openings of the lower floor column, with concrete breaking at the level plate planes (plug connection). According to the invention, the hole in the slab is made in the form of a truncated pyramid facing up with the big base, and the lower one goes into the shape of a straight parallelepiped, with dimensions smaller in plan than the cross section of the upper face of the lower floor column, the upper and lower reinforcement of the slab continuously passes in the volume of the opening of the floor slab, the connection of the columns with the slab is made by monolithic concrete, filling the volume of the slab opening and the gap between the columns.

The slab can be initially fixed on the upper edge of the column of the lower floor by installing it through a mortar or cement glue, as well as through the use of a plug joint of columns with concrete breaking at the level of overlap and continuously passing through the opening of the slab of the reinforcement, which when filling the void with concrete creates the necessary strength of the design of the interface node and eliminates the need for welding at the construction site.

The technical solution is illustrated by drawings, which depict:

- figure 1 - node connection columns and slabs;

- figure 2 - section 1-1;

- figure 3 is a section 2-2.

The frame assembly contains an upper column 1 and a column of the lower floor 2, an overlapping plate 3 is installed on the upper face of the column of the lower floor, provided with a hole in the form of a truncated pyramid 4, facing up with a large base, and the lower one goes into the shape of a straight parallelepiped, in the volume of the plate opening the upper 5 and lower 6 reinforcing slabs 3 continuously passes. 1 and has an outlet valve 8 and column 2 has a bottom floor rigidly mounted in the body of the steel column tube 9 for organizing plug connection with disparities in the concrete slab 10.

Installation site at the construction site is as follows.

After installation of the column of the lower floor 2, a mounting device is installed (not shown in the drawings), on the upper face of the column of the lower floor 2, a slab 3 is placed on the mortar or cement glue 11. Then, the upper column 1 is mounted, leading the outlets of reinforcement 8 into the steel tubes 9 of the lower column 2. After this, the assembly is monolithic with concrete 12 with a thorough seal.

The slab 3 can be initially fixed on the upper edge of the column of the lower floor 2 by installing it through a mortar or cement glue 11, as well as through the use of a plug joint of columns with concrete breaking at the level of overlap and continuously passing through the opening of the slab of the reinforcement, which when filling the void concrete monolithic creates the necessary structural strength of the interface unit and eliminates the need for welding on a construction site.

Claims (1)

A junction of prefabricated columns and a floor slab of a non-bezelless capless building frame, containing a prefabricated floor slab with a hole in the center and columns, the joint of which was made by releasing the fittings of the upper floor column into the openings of the lower floor column, with concrete breaking in the level of the slab plane (plug connection), characterized in that the hole in the plate is made in the form of a truncated pyramid facing up with a large base, and the lower one goes into the shape of a straight parallelepiped with dimensions smaller than The section of the upper face of the column of the lower floor, in the volume of the opening of the slab, the upper and lower reinforcement of the slab continuously passes, the connection of the columns with the slab is made by monolithic concrete, filling the volume of the opening of the slab and the gap between the columns.

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