RU144860U1 - METAL FRAME OF SEISMIC RESISTANT MULTI-STOREY BUILDING - Google Patents

Abstract

1. The metal frame of an earthquake-resistant multi-storey building, characterized in that it is a structure consisting of columns and crossbars connected at right angles to each other, each column consisting of steel inner and outer box shells inserted parallel to one another with gaps throughout to the sides, in said clearances, steel shear bonds having a transverse angular equal-shelf section are installed, wherein steel shear bonds of the column are installed perpendicular to the axis of the column; each crossbar consists of an average bearing element, upper and lower steel belt elements and steel shear ties, the middle bearing element being a welded steel I-beam with upper and lower belts, the upper and lower steel belt elements are installed in parallel and with a gap to the upper and lower to the belts of the middle bearing element, steel shear bonds are installed in the specified gap, while the steel shear bonds have an angular equal-shelf section. 2. A metal frame according to claim 1, characterized in that the steel shear bonds of each crossbar are installed parallel to each other. 3. A metal frame according to claim 1, characterized in that the steel shear bonds of each column are installed perpendicular to the axis of the column. The metal frame according to claim 1, characterized in that the steel shear bonds of the column are installed horizontally. 5. The metal frame according to claim 1, characterized in that the lower and upper belts of the middle bearing element and the upper and lower steel waist elements of each crossbar and the inner and outer steel box shells of each column are equipped with �

Description

The utility model relates to the field of construction, namely, metal frames of earthquake-resistant multi-storey buildings, and can be used for the construction of multi-storey buildings with a metal frame that accept horizontal seismic and wind loads.

In the prior art, various variants of metal frames of buildings are known.

From the document CN 102979179 A, the metal frame of a building is known, which is made of metal columns and metal floor beams, and oblique stiffeners are installed on the floor beams.

The disadvantage of this frame when exposed to horizontal loads is the predominant influence of bending moments that determine the strength and rigidity of the frame.

From the document CN 1851188 A, a steel frame is known consisting of columns and floor beams, and adjustable stiffness connections are diagonally installed between the corners of the columns and beams of one span.

The disadvantage of this frame is also low rigidity and strength.

The closest analogue of the claimed utility model is CA 2458706 A1, of which the metal frame of multi-storey buildings is known, which has columns and floor beams, the columns are made in the form of box-shaped, square elements in cross section, and the beams in the form of an I-beam. Floor beams are attached to the columns using connecting elements.

The disadvantage of the closest analogue is the low rigidity and structural strength.

Thus, the technical result, to achieve which the claimed utility model is aimed, is to increase the rigidity and strength of the frame, and, accordingly, increase the seismic resistance of the building as a whole.

The claimed technical result is fully achieved by a set of features of an independent paragraph of the claimed formula of the utility model.

The proposed frame design changes its mode of operation: bending moments are practically eliminated from the force factors determining the strength and rigidity of the frame. Frame elements - crossbars and columns work mainly on transverse, longitudinal and shear forces, that is, mainly on compression-tension.

The metal frame of an earthquake-resistant multi-storey building is a structure consisting of columns and crossbars connected at right angles to each other. Each column consists of steel inner and outer box shells inserted parallel to one another with gaps on all sides. In these gaps, steel shear bonds are installed having a transverse angular equal-shelf section. Steel link shear columns are installed perpendicular to the axis of the column. Each crossbar consists of a middle bearing element, upper and lower steel belt elements, and steel shear ties. The middle bearing element is a welded steel I-beam. The upper and lower steel belt elements are made of sheet metal. Steel shear bonds have an equal-angled cross-sectional angle. The upper and lower steel belt elements are installed in parallel and with a gap to the upper and lower zones of the middle bearing element. In the specified gap steel shear bonds are installed.

Steel shear bonds of each crossbar are installed parallel to each other.

Steel shear bonds of each column are mounted perpendicular to the axis of the column.

Steel shear column ties are mounted horizontally.

The lower and upper belts of the middle bearing element and the upper and lower steel waist elements of each crossbar and the inner and outer steel box-like shells of each column are equipped with a hole system with a constant pitch for establishing steel shear bonds.

Each column has a rectangle in cross section, in particular a square.

Further, in more detail, the claimed utility model is illustrated by drawings, in which:

In FIG. 1 shows a schematic plan of the frame (top view);

In FIG. 2 is a section Α-A in FIG. one;

In FIG. 3 - fragment “G” in FIG. 2;

In FIG. 4 - fragment “D” in FIG. 2;

In FIG. 5 - node "A" in FIG. 2;

In FIG. 6 - node "B" in FIG. 2;

In FIG. 7 - node "B" in FIG. 2;

In FIG. 8 is a section 1-1 along the crossbar in FIG. 2;

In FIG. 9 is a section 2-2 along the column of FIG. 2; four.

In FIG. 10 - Node "E" (bolt) in FIG. 3-7;

In FIG. 11 - Node “G” (column) in FIG. 3-7;

In FIG. 12 - steel shear bond separately;

In FIG. 13 - structural elements from sheet metal with holes.

The claimed metal frame of an earthquake-resistant multi-storey building includes interconnected three-element load-bearing structures: columns and crossbars.

Each metal column consists of an inner (1) and outer (2) box-like shells inserted parallel to one another with gaps on all sides. In these gaps, steel shear bonds (3) are installed having a transverse angular equal-shelf section. Moreover, the steel connection (3) of the column shear is installed perpendicular to the axis of the column.

Each metal crossbar consists of an average bearing element (4), upper (5) and lower (6) steel belt elements, and steel ties (7) of shear. The middle bearing element (4) is a steel welded I-beam with upper and lower belts connected by a connecting element. The upper (5) and lower (6) steel belt elements are made of sheet metal. Steel shear bonds (7) have an equal-angled cross-sectional angle. The upper (5) and lower (6) steel belt elements are installed in parallel and with a gap to the upper and lower zones of the middle bearing element (4). In this gap, steel shear bonds (7) are installed.

The lower and upper belts of the middle bearing element (4) and the upper (5) and lower (6) steel belt elements of each crossbar and the inner (1) and outer (2) steel box shells of each column are equipped with a hole system (8) with a constant pitch , to install steel shear bonds (7).

The connection of the elements of the column and the crossbar is made by welding with metal fusion.

Steel shear bonds (7) are installed parallel to each other.

The uniting of the column elements into a single structure is carried out by welding steel ties (3) of shear with the inner (1) and outer (2) steel box shells.

The joining of the crossbar elements into a single structure is performed by welding steel shear ties (7) with steel belt elements (5 and 6) and the middle bearing element (4).

The connection of metal columns and metal crossbars is carried out by any known methods: welding, screw-nut connection, riveting, etc.

The entire frame structure is installed on the foundation in any known manner and in any sequence.

This embodiment provides greater rigidity, allowing the structure to withstand heavy loads.

Such a constructive solution of the metal frame elements (columns and crossbars) of a multi-storey building is based on the effect of replacing the bending moment with transverse and shear forces. Bending moments, insignificant in magnitude, are localized mainly within the pitch of steel shear bonds, and do not accumulate along the length of the structural elements of the frame.

The parameters of the limiting states of the metal frames of buildings are regulated by optimizing the gap between the box-shaped shells of each column, and optimizing the gap between the upper and lower belts of the middle bearing element and the upper and lower steel waist elements of each crossbar, as well as the pitch of the steel shear ties in the columns and crossbars.

The bearing capacity of the columns and girders of the metal frame is determined by the maximum edge stresses and maximum tangential stresses in the steel shear bonds.

The optimal stiffness of steel shear bonds will be such that the load-bearing capacity of the columns and crossbars is the same according to these two criteria.

Thus, the implementation of the steel frame of the above construction provides an increase in the rigidity of the building.

Claims (7)

1. The metal frame of an earthquake-resistant multi-storey building, characterized in that it is a structure consisting of columns and crossbars connected at right angles to each other, each column consisting of steel inner and outer box shells inserted parallel to one another with gaps throughout to the sides, in said clearances, steel shear bonds having a transverse angular equal-shelf section are installed, wherein steel shear bonds of the column are installed perpendicular to the axis of the column; each crossbar consists of an average bearing element, upper and lower steel belt elements and steel shear bonds, the middle bearing element being a welded steel I-beam with upper and lower belts, the upper and lower steel belt elements are installed in parallel and with a gap to the upper and lower to the belts of the middle bearing element, steel shear bonds are installed in the specified gap, while the steel shear bonds have an angular equal-shelf section. 2. The metal frame according to claim 1, characterized in that the steel shear bonds of each crossbar are installed parallel to each other. 3. The metal frame according to claim 1, characterized in that the steel shear bonds of each column are installed perpendicular to the axis of the column. 4. The metal frame according to claim 1, characterized in that the steel shear bonds of the column are installed horizontally. 5. The metal frame according to claim 1, characterized in that the lower and upper belts of the middle bearing element and the upper and lower steel waist elements of each crossbar and the inner and outer steel box shells of each column are equipped with a hole system having a constant pitch for establishing steel ties shear. 6. The metal frame according to claim 1, characterized in that each column has a rectangle in cross section. 7. The metal frame according to claim 6, characterized in that each column has a square in cross section.