CN104264792B - A kind of bean column node of layered assembling type steel structure - Google Patents

Abstract

The invention discloses a kind of bean column node of layered assembling type steel structure, it includes upper strata post (1) and lower floor's post (2) and the girder (3) being arranged between upper strata post (1) and lower floor's post (2)；The girder (3) is welded with center pillar (5) with the junction of upper strata post (1) and lower floor's post (2), the side of the center pillar (5) is welded with girder (3), its upper and lower ends is respectively welded center pillar upper flange (51) and center pillar lower flange (52), the welded top that the bottom welding of the upper strata post (1) has the upper prop flange (11) for connecing relative with center pillar upper flange (51), the lower floor's post (2) has the lower prop flange (21) for connecing relative with center pillar lower flange (52).Present invention construction is simple, power transmission is direct, each part stress clearly, be easy to industrialization manufacture and assembled in situ, greatly reduce assembled in situ workload, improve assembled in situ efficiency, comprehensive cost low.

Description

Beam-column joint of a layered assembled steel structure

technical field

The invention relates to the field of prefabricated building processing and manufacturing, in particular to a beam-column node of a layered prefabricated steel structure.

Background technique

In the traditional fully welded beam-column joint, the upper and lower flanges of the beam and the web are welded to the column on site. Although this connection is a rigid connection, the ductility of the joint is poor, and brittle failure is prone to occur in earthquakes, and on-site welding is required, which greatly affects the construction. The speed and quality are not suitable for fabricated steel structures. At the same time, due to the large welding area, it is easy to generate large residual stress, which affects the mechanical performance of the joints.

In traditional beam-column joints connected by high-strength bolts, the beam end seal plate and box-shaped columns are fastened and connected by high-strength bolts. When fastening, workers need to put their hands into the box-shaped columns. It is inconvenient to come, and at the same time, the bolt holes will weaken the short column of the node, affecting its mechanical performance.

In the traditional bolted and welded joint connection, the upper and lower flanges of the beam and column are welded to the column on site, and the web at the beam end is bolted to the column through a shear plate. This connection method requires on-site welding, which greatly affects the construction speed and quality. The program is complicated and it is not easy to realize rigid connection.

Contents of the invention

The purpose of the present invention is to reduce the workload of on-site assembly and improve the efficiency of on-site assembly of beams and columns of a layered assembly type steel structure while ensuring sufficient strength, rigidity and ductility of the connecting parts and maintaining correct mutual positions between the connected components. node, which can effectively solve the problems existing in the background technology.

A beam-column joint of a layered assembled steel structure, which includes an upper column 1 and a lower column 2 and a main beam 3 installed between the upper column 1 and the lower column 2; the main beam 3 and the upper column 1 and the lower column A central column 5 is welded at the joint of the column 2, a main beam 3 is welded on one side of the central column 5, and a central column upper flange 51 and a central column lower flange 52 are respectively welded at the upper and lower ends of the central column 5. The upper column 1 The bottom of the upper column 2 is welded with the upper column flange 11 docked with the upper flange 51 of the middle column, and the top of the lower column 2 is welded with the lower column flange 21 docked with the lower flange 52 of the middle column.

The central column 5 is a hollow rectangular tubular structure as a whole, and the upper end of the lower column 2 extends upwards to a connecting post 4 that is plugged and matched with the central post 5 , and the connecting post 4 passes through the central post 5 through a gap. Extend into the upper column 1.

An upper column stiffener 12 is welded between the upper column flange 11 and the upper column 1 .

A lower column stiffener 22 is welded between the lower column flange 21 and the lower column 2 .

The center column upper stiffener 33 is welded between the center column upper flange 51 and the center column 5 .

A stiffener 34 under the center pillar is welded between the lower flange 52 of the center pillar and the center pillar 5 .

Due to the adoption of the above technical scheme, the present invention has the following beneficial effects: simple structure, direct force transmission, clear force of each part, convenient industrialized manufacturing and on-site assembly, greatly reducing the workload of on-site assembly, improving on-site assembly efficiency, and comprehensive cost reduction. Low.

Description of drawings

In order to illustrate the present invention more clearly, the embodiments will be briefly introduced below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of embodiment 1 among the present invention;

Fig. 2 is the perspective view of embodiment 1 among the present invention;

Fig. 3 is the structural diagram of embodiment 1 among the present invention;

Fig. 4 is the structural representation of embodiment 2 among the present invention;

Fig. 5 is a schematic diagram of the installation structure of Embodiment 2 of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

Example 1

Referring to Figures 1-3, when the main beam 3, the upper column 1 and the lower column 2 are preferably I-shaped steel, one end of the main beam 3 is welded with a central column 5, which is also an I-shaped steel, and its upper and lower sides The ends are respectively welded with the middle column upper flange 51 and the middle column lower flange 52, the bottom of the upper column 1 is welded with the upper column flange 11 which is connected with the middle column upper flange 51, and the top The lower column flange 21 that is in contact with the lower flange 52 of the middle column is welded.

An upper column stiffener 12 is welded between the upper column flange 11 and the upper column 1 .

A lower column stiffener 22 is welded between the lower column flange 21 and the lower column 2 .

The center column upper stiffener 33 is welded between the center column upper flange 51 and the center column 5 .

A stiffener 34 under the center pillar is welded between the lower flange 52 of the center pillar and the center pillar 5 .

Example 2

Referring to Figures 4-5, when the main beam 3, the upper column 1 and the lower column 2 are preferably made of rectangular pipes, the central column 5 is a hollow rectangular tubular structure, and an upper end of the lower column 2 extends upwards to connect with the central column. 5 Connecting post 4 for plug-in fit, the connecting post 4 extends through the center column 5 to the upper column 1 through the gap, and the edges of the upper and lower ends of the center column 5 extend outward vertically to the upper flange 51 of the center column And the lower flange 52 of the center column, the bottom of the upper column 1 is welded with the upper column flange 11 that is in contact with the upper flange 51 of the center column, and the top of the lower column 2 is welded with a flange 52 opposite to the lower flange of the center column. Connected lower column flange 21.

An upper column stiffener 12 is welded between the upper column flange 11 and the upper column 1 .

A lower column stiffener 22 is welded between the lower column flange 21 and the lower column 2 .

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (1)

1. A beam-column joint of a layered assembled steel structure, characterized in that it comprises an upper column (1) and a lower column (2) and a main beam installed between the upper column (1) and the lower column (2) (3); The junction of the main beam (3) and the upper column (1) and the lower column (2) is welded with a central column (5), and one side of the central column (5) is welded with a main beam (3) , its upper and lower ends are respectively welded with the upper flange (51) of the middle column and the lower flange (52) of the middle column, and the bottom of the upper column (1) is welded with the upper flange (51) of the middle column a column flange (11), the top of the lower column (2) is welded with a lower column flange (21) connected to the middle column lower flange (52); The central column (5) is a hollow rectangular tubular structure as a whole, and a connecting post (4) extending upwards from the upper end of the lower column (2) is plugged with the central post (5). The column (4) gap passes through the middle column (5) and extends into the upper column (1); An upper column stiffener (12) is welded between the upper column flange (11) and the upper column (1); A lower column stiffener (22) is welded between the lower column flange (21) and the lower column (2); Stiffeners (33) on the center column are welded between the center column upper flange (51) and the center column (5); A stiffener (34) under the center column is welded between the center column lower flange (52) and the center column (5).