CN104652616A - Half-welding half-bolt beam-column joint connection device of assembly type steel structure system - Google Patents

Abstract

The invention relates to a half-welded half-bolt beam-column node connection device of an assembled steel structure system, belonging to the technical field of structural engineering. The connecting plate of the column seat and the short column of the node, the flange of the upper end of the short column of the node, the flange of the lower end of the short column of the node, and the truss beam on one side can be welded together in the factory; The factory is welded into one; the beam end connecting plate and the column base connecting plate are connected with bolts; the welding part of the node connecting device of the present invention can be completed in the factory, and bolts are used for on-site assembly. The bolt fastening work is convenient and fast, and the construction speed and quality are high. Greatly improved, adapting to the development of assembled steel structures, meanwhile, the joints of the invention are rigid joints, have good ductility and strong bearing capacity.

Description

A half-welded half-bolt beam-to-column joint connection device for fabricated steel structure system

technical field

The invention relates to a half-welded half-bolt beam-column node connection device of an assembled steel structure system, belonging to the technical field of structural engineering.

Background technique

The prefabricated steel structure system refers to the building produced by manufacturing housing units or components according to uniform and standard building part specifications, and then transporting them to the construction site for assembly in place. It is characterized by light building weight, energy saving and environmental protection, fast construction speed, and high degree of industrialization. It can solve many problems such as the low level of construction industrialization in my country, low labor productivity in house construction, and low quality of traditional house products, and adapt to the development of my country's construction industry.

The beam-column connection is the most important node in the fabricated steel structure system, which directly affects the construction speed and the degree of assembly of the structure. Therefore, the beam-column joints should be connected with high-strength bolts that are easy to operate as much as possible, and the bolts should be arranged as much as possible. It is possible to facilitate on-site fastening by workers. The beam-column joints used in existing engineering examples have the following shortcomings:

In the traditional fully welded beam-column joint, the upper and lower flanges of the beam and the web and the column are welded 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. Speed and quality are not suitable for fabricated steel structures. At the same time, due to the large area of the weld, 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 reach into the box-shaped columns. It is inconvenient to come, and at the same time, the screw 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 end 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, and the construction The program is complicated and it is not easy to realize rigid connection.

Contents of the invention

The present invention proposes a half-welded and half-bolt beam-column joint connection device of an assembled steel structure system. The assembly between modules improves the assembly speed of components and fully adapts to the requirements and characteristics of the fabricated steel structure system.

The technical solution of the present invention is as follows: a half-welded half-bolt beam-column node connection device of an assembled steel structure system, the connection device includes a column base connection plate, a beam end connection plate, an upper column flange, a lower column flange, and a truss The upper and lower chords at the beam end, the lower flange of the node stub column, the node stub column, and the node stub column upper flange; the node stub upper flange and the node stub lower flange are respectively welded to the upper and lower joint stub columns end; the upper end flange of the node short column is connected to the upper column flange by bolt a, and the lower end flange of the node short column is connected to the lower column flange by bolt a; the column base connecting plate is welded on the outside of the node short column side, and the connecting plate and lower end of the column seat are welded together with the upper end flange of the joint short column and the lower end flange of the joint short column respectively; The flange at the lower end of the short column is welded together; the beam end connecting plate is connected to the column seat connecting plate through bolt c; the beam end connecting plate is welded together with the upper and lower chords of the truss beam end on the other side, and the beam end is connected during welding The plate is docked with the vertical flanges of the upper and lower chords of the truss beam end; the upper and lower column flanges are respectively connected to the upper and lower chords of the truss beam end through bolts b, and clamp the upper and lower chords of the truss beam end.

The vertical axis of the cross section of the connecting plate of the column seat is aligned with the vertical axis of the side of the short column of the node.

The connecting plate of the column base is welded into one body with the joint short column, the upper end flange of the joint short column, the lower end flange of the joint short column, and the upper and lower chords of one side truss beam end; The factory is welded into one; the lower column flange and the lower column are welded into one in the factory.

The column base connecting plate and the beam end connecting plate are connected by single or multiple rows of bolts c.

The cross section of the node short column is square; the upper end flange of the node short column and the lower end flange of the node short column are both square.

The column seat connecting plate is respectively welded to two, three or four side surfaces of the short node column.

The upper column flange and the lower column flange are respectively connected to two, three or four sides of the upper end flange of the short column and the lower end flange of the node short column.

In the half-welded half-bolt beam-column joint connection device of the assembled steel structure system of the present invention, some components can be welded in the factory, and the later on-site assembly only requires bolts and no on-site welding operation requirements, and the arrangement of the bolts is also easy. Worker operation greatly improves the assembly speed and quality.

The beam-column joint of the present invention is bolted on site, which is a rigid joint. At the same time, since the beam is a truss beam, the plastic hinge can be moved outward under the action of an earthquake, and a plastic hinge can be formed at the beam end outside the joint to effectively protect the joint.

Description of drawings

Fig. 1 beam-column node structure schematic diagram of the present invention;

Fig. 2 schematic diagram of the structure of the beam-column node column seat of the present invention;

Fig. 3 is a structural schematic diagram of beam-column joint member A1 and member A2 of the present invention;

Fig. 4 is a schematic diagram of the splicing of the beam-column joint column seat C and component A1 of the present invention;

Fig. 5 is a structural schematic diagram of the beam-column joint member B of the present invention;

Fig. 6 is a schematic diagram of splicing beam-column joint member B and column seat C of the present invention;

Fig. 7 is a schematic diagram of splicing the beam-column joint member A2 and the column seat C of the present invention.

In the figure: 1-column base connecting plate; 2-beam end connecting plate; 3-upper column flange; 4-lower column flange; 5-truss beam end upper and lower chords; - joint short column; 8 - upper end flange of joint short column; 9 - bolt a, 10 - bolt b, 11 - bolt c.

Detailed ways

The specific connection mode of the beam-column node of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in accompanying drawings 1 to 7, a half-welded half-bolt beam-column joint connection device of an assembled steel structure system according to the present invention includes a column base connecting plate 1, a beam end connecting plate 2, an upper column flange 3, a lower Column flange 4, truss beam end upper and lower chords 5, node short column lower flange 6, node short column 7, node short column upper flange 8. The upper flange 8 of the node stub and the lower flange 6 of the node stub are respectively welded to the upper and lower ends of the node stub 7; the upper flange 8 of the node stub is connected to the upper flange 3 by bolts a9, The lower end flange 6 and the lower column flange 4 are connected by bolts a9; the column base connecting plate 1 is welded to the outer surface of the node short column 7, and the upper and lower ends of the column base connecting plate 1 are respectively connected to the upper end flange 8 of the node short column and the node short The flange 6 at the lower end of the column is welded into one; the upper and lower ends of the upper and lower chords 5 at the end of the truss beam on one side are respectively welded with the flange 8 at the upper end of the short node column and the flange 6 at the lower end of the short column at the node; c11 is connected with the column base connecting plate 1; the beam end connecting plate 2 is welded together with the upper and lower chords 5 of the truss beam end on the other side, and the beam end connecting plate 2 is butted with the vertical flanges of the upper and lower chords 5 of the truss beam end during welding ; The upper column flange 3 and the lower column flange 4 are respectively connected with the upper and lower chords 5 of the truss beam end through bolts b10, clamping the upper and lower chords 5 of the truss beam end; The vertical axis of the side of the column 7 is aligned; the column base connecting plate 1 and the beam end connecting plate 2 are connected by a single row or multiple rows of bolts c11; wherein, the cross section of the node short column 7 is square, and the upper end flange of the node short column 8 The flange 6 at the lower end of the node short column is square; the column seat connecting plate 1 is welded to the four sides of the node short column 7 respectively; the upper column flange 3 and the lower column flange 4 are respectively connected to the upper end flange 8 of the short column It is connected with the three sides of the flange 6 at the lower end of the short column of the node.

The column seat connecting plate 1 is welded together with the node short column 7, the upper end flange 8 of the node short column, the lower end flange 6 of the node short column, and the upper and lower chords 5 at the end of the truss beam on one side, forming a column base C; The column and the lower column flange 4 are welded together in the factory to form a component A1; the upper column and the upper column flange 3 are welded together in the factory to form a component A2; the beam end connecting plate 2 and the upper and lower chords 5 of the truss beam end on the other side Welded together in the factory to form component B; the connection between column base C and component A1 is connected through the bolt a9 between the lower end flange 6 of the joint short column and the lower column flange 4; the connection between column base C and component B is connected through the beam end The plate 2 is connected with the bolt 11 between the column base connecting plate 1; the connection between the column base C and the component A2 is connected by the bolt a9 between the upper end flange 8 of the node short column and the upper column flange 3; the component A1, The connection between A2 and member B is connected by bolt b10.

The above is a typical embodiment of the present invention, and the practice of the present invention is not limited thereto.

Claims (7)

1. a half weldering half bolt beam column node connection device of assembling type steel structure system, is characterized in that: described linkage comprises end flanges (6), node short column (7) and node short column upper flanges (8) under column base junction plate (1), beam-ends junction plate (2), upper prop flange (3), lower prop flange (4), truss beam-ends top-bottom chord (5), node short column; Under described node short column upper flanges (8) and node short column, end flanges (6) is welded in the upper/lower terminal of node short column (7) respectively; Described node short column upper flanges (8) is connected by bolt a (9) with upper prop flange (3), and under described node short column, end flanges (6) is connected by bolt a (9) with lower prop flange (4); Described column base junction plate (1) is welded in node short column (7) lateral surface, and column base junction plate (1) upper and lower end is integrally welded with end flanges (6) under node short column upper flanges (8), node short column respectively; Truss beam-ends top-bottom chord (5) upper and lower end of described side is integrally welded with end flanges (6) under node short column upper flanges (8), node short column respectively; Described beam-ends junction plate (2) is connected with column base junction plate (1) by bolt c (11); Described beam-ends junction plate (2) is integrally welded with opposite side truss beam-ends top-bottom chord (5), and during welding, beam-ends junction plate (2) docks with the vertical edge of a wing of the upper and lower chord member of truss beam-ends; Described upper prop flange (3), lower prop flange (4) are connected by bolt b (10) with opposite side truss beam-ends top-bottom chord (5) respectively, clamp truss beam-ends top-bottom chord (5).

2. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: the cross section vertical axis of described column base junction plate (1) is alignd with the vertical axis of node short column (7) side.

3. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: described column base junction plate (1) and end flanges (6) under node short column (7), node short column upper flanges (8), node short column and side truss beam-ends top-bottom chord (5) integrally welded in factory; Described upper prop flange (3) is integrally welded in factory with upper prop; Described lower prop flange (4) is integrally welded in factory with lower prop.

4. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: described column base junction plate (1) is connected by single row or multiple rows bolt c (11) with described beam-ends junction plate (2).

5. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: described node short column (7) cross section is square; Under described node short column upper flanges (8) and node short column, end flanges (6) is square.

6. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: described column base junction plate (1) is welded with two, three of described node short column (7) or four sides respectively.

7. half weldering half bolt beam column node connection device of a kind of assembling type steel structure system according to claim 1, is characterized in that: described upper prop flange (3) and described lower prop flange (4) are connected with two, three of end flanges (6) under described node short column upper flanges (8) and node short column or four edges respectively.