CN103015536B - Beam-column joint connecting device for multi-story/high-rise assembly type steel structure system - Google Patents

Abstract

The invention relates to a beam-column joint connecting device of a multi-high-rise assembled steel structure system, which belongs to the technical field of structural engineering, and includes beam end box-type connectors, vertical connecting channel steel, upper column flanges, lower column flanges, and trusses The upper and lower chords of the beam end, the lower flange of the node stub column, the node stub column and the upper end flange of the node stub column. The beam-end box-type connectors and the node short columns, the upper end flanges of the node short columns, and the lower end flanges of the node short columns can be welded together in the factory; the two vertical connecting channel steels and the upper and lower chords of the truss beam ends are welded in the factory. One body; two vertically connected channel steels are connected with beam-end box-type connectors with bolts; the welding part of the node connection device of the present invention can be completed in the factory, and bolts are used for on-site assembly. The fastening work of bolts is convenient and fast, and the construction speed And the quality is greatly improved, which is suitable for the development of assembled steel structures. Meanwhile, the joints of the invention are rigid joints with good ductility and strong bearing capacity.

Description

A beam-column joint connection device for a multi-high-rise fabricated steel structure system

technical field

The invention relates to a beam-column joint connecting device of a multi-high-rise assembled steel structure system, belonging to the technical field of structural engineering.

Background technique

The multi-high-rise fabricated 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 multi-story fabricated steel structure system. It directly affects the construction speed and the degree of assembly of the structure. Therefore, the beam-column connection should be connected with high-strength bolts that are easy to operate as much as possible, and the arrangement of the bolts It should be as easy as possible for workers to fasten on site. 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. The speed and quality are not suitable for multi-story 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 beam-column node connection device for a multi-high-rise assembled steel structure system, the purpose of which is to overcome the defects of the prior art, meet the mechanical properties of the nodes, realize the rigid connection of the beam-column nodes, and realize the assembly of the structure , improve the assembly speed of components, and fully adapt to the requirements and characteristics of multi-high-rise fabricated steel structure systems.

Technical scheme of the present invention is as follows:

A beam-column node connection device for a multi-high-rise fabricated steel structure system, characterized in that the connection device includes a beam end box-type connector, a vertical connection channel steel, an upper column flange, a lower column flange, and a truss beam The upper and lower chords, the lower end flange of the node stub, the node stub and the upper end flange of the node stub; the node stub upper flange and the node stub lower flange are respectively welded to the upper and lower nodes end; the upper end flange of the node short column is connected with the upper column flange by bolts, and the lower end flange of the node short column is connected with the lower column flange by bolts; the beam end box-type connector is welded outside the node short column side, and the upper and lower ends of the beam-end box-type connector are welded together with the upper flange of the node stub column and the lower end flange of the node stub column respectively; the two vertical connecting channel steels are connected to the beam-end box-type connector by bolts , to clamp the beam-end box-shaped connector; the vertical connecting channel steel and the upper and lower chords of the two truss beam ends on the same side are welded into one body through the channel steel flange, and the two flanges of the vertical connecting channel steel face toward Outside the beam, it is buckled inside the upper and lower chords of the beam end; the upper and lower column flanges are respectively connected to the upper and lower chords of the truss beam end by bolts, and clamp the upper and lower chords of the truss beam end.

In the beam-column node connecting device of the multi-story fabricated steel structure system, the vertical axis of the cross-section of the box-shaped connector at the beam end is aligned with the vertical axis of the side of the short column of the node.

In the beam-column node connecting device of the multi-high-rise fabricated steel structure system, the beam-end box-type connectors and the node stubs, the upper flanges of the node stub columns, and the lower end flanges of the node stub columns are welded together in a factory; The upper column flange and the upper column are welded together in the factory; the lower column flange and the lower column are welded together in the factory.

In the beam-column joint connecting device of the multi-story fabricated steel structure system, the beam-end box-type connectors and the vertical connecting channel steel are connected by single or multiple rows of bolts.

In the beam-column joint connecting device of the multi-story fabricated steel structure system, the cross-section of the joint short column is square; the upper end flange of the joint short column and the lower end flange of the joint short column are both square.

In the beam-column node connection device of the multi-story fabricated steel structure system, the box-shaped connectors at the beam ends are respectively welded to two, three or four sides of the node short columns.

In the beam-column joint connecting device of the multi-high-rise assembled steel structure system, the upper column flange and the lower column flange are respectively connected with the two, Connected by three or four sides.

Beneficial effect

In the beam-column joint connection device of the multi-story assembled steel structure system of the present invention, some parts can be welded in the factory, and the later on-site assembly only requires bolts and does not require on-site welding operations, and the arrangement of the bolts is also easy for workers to operate , greatly improving 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-beam end box-type connector; 2-vertical connecting channel steel; 3-upper column flange; 4-lower column flange; 5-truss beam end upper and lower chords; 6-node short column lower end Flange; 7-node stub column; 8-node stub upper flange; 9, 10, 11-bolt; A1, A2, B-member, C-column base.

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 beam-column joint connecting device of a multi-story assembled steel structure system according to the present invention includes short joint columns 7, box-shaped connectors 1 at beam ends, and upper and lower chords 5 at the ends of truss beams. , Vertical connection channel steel 2, upper column flange 3, lower column flange 4, joint short column upper end flange 8, joint short column lower end flange 6. 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 and the upper flange 3 are connected by bolts 9, and the node stub The lower end flange 6 and the lower column flange 4 are connected by bolts 9; the beam-end box-shaped connector 1 is welded to the outer surface of the node short column 7, and the upper and lower ends of the beam-end box-type connector 1 are respectively connected to the upper end flange of the node short column 8. The flange 6 at the lower end of the short column of the node is welded into one; the two vertically connected channel steels 2 are connected with the beam-end box-shaped connector 1 through bolts 11, and clamp the beam-end box-shaped connector 1; the vertically connected channel steel 2 The upper and lower chords 5 of the two truss beam ends on the same side are welded into one body through the channel steel flanges. When welding, the two flanges of the vertically connected channel steel 2 face outwards of the beams and are buckled inside the upper and lower chords 5 of the beam ends; The 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 10, clamping the upper and lower chords 5 of the truss beam end; The vertical axis of the side of the node short column 7 is aligned; the beam end box-shaped connector 1 and the vertical connecting channel steel 2 are connected by a single row or multiple rows of bolts 11; wherein, the cross section of the node short column 7 is square; the upper end of the node short column Both the flange 8 and the flange 6 at the lower end of the node short column are square. The beam-end box-shaped connectors 1 are respectively welded to the three sides of the node stub column 7 . The upper column flange 3 and the lower column flange 4 are respectively connected with the three sides of the upper end flange 8 of the short column and the lower end flange 6 of the node short column.

Beam-end box-type connector 1 is welded together with joint short column 7, upper end flange 8 of joint short column, and lower end flange 6 of joint short column at the factory to form a column seat C; the lower column and lower column flange 4 are welded at the factory The upper column and the upper column flange 3 are welded together in the factory to form the component A2; the two vertically connected channel steels 2 and the upper and lower chords 5 at the end of the truss beam are welded together in the factory to form the component B; The connection between the column base C and the component A1 is connected through the bolt 9 between the lower end flange 6 of the node short column and the lower column flange 4; the connection between the column base C and the component B is through two vertically connecting channel steel 2 and the beam end box The bolts 11 between the connectors 1 are connected; the connection between the column seat C and the component A2 is connected by the bolt 9 between the upper end flange 8 of the node short column and the upper column flange 3; the components A1, A2 and the component B The connection is via bolt 10 connections.

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

Claims (6)

1. A beam-column joint connection device of a multi-high-rise assembled steel structure system, characterized in that: the connection device comprises a beam end box-type connector (1), a vertical connection channel steel (2), an upper column flange (3), lower column flange (4), truss beam end upper and lower chords (5), node stub lower end flange (6), node stub column (7) and node stub upper end flange (8); The upper end flange (8) of the joint short column and the lower end flange (6) of the joint short column are respectively welded to the upper and lower ends of the joint short column (7); The column flange (3) is connected by bolts (9), and the joint short column lower end flange (6) is connected with the lower column flange (4) by bolts (9); the beam end box-type connector (1) Welded on the outer surface of the node short column (7), and the upper and lower ends of the beam end box-shaped connector (1) are welded into one body with the upper end flange (8) of the node short column and the lower end flange (6) of the node short column respectively; The vertical connecting channel steel (2) is connected with the beam-end box-type connector (1) by bolts (11), clamping the beam-end box-type connector (1); the vertical connecting channel steel (2) The upper and lower chords (5) at the end of the two truss beams on the same side are welded into one body through the flange of the channel steel. When welding, the two flanges of the vertically connected channel steel (2) face outwards of the beam and are fastened to the upper and lower chords at the end of the beam. (5) Inside; 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 (10), clamping the upper and lower chords of the truss beam end (5). the 2. The beam-column node connection device of multi-high-rise fabricated steel structure system according to claim 1, characterized in that: the cross-section of the node short column (7) is square; the beam end box-type connector (1 ) is aligned with the vertical axis of the node short column (7) side. the 3. The beam-column joint connecting device of multi-high-rise assembled steel structure system according to claim 1, characterized in that: the beam end box-type connector (1) and the vertical connecting channel steel (2) pass through Single or multiple rows of bolts (11) are connected. the 4. The beam-column joint connection device of multi-high-rise fabricated steel structure system according to claim 1, characterized in that: the upper end flange (8) of the joint short column and the lower end flange (6) of the joint short column are both square. the 5. The beam-column node connecting device of the multi-high-rise fabricated steel structure system according to claim 4, characterized in that: the beam-end box-shaped connector (1) is connected to the two nodes of the node short column (7) respectively. One, three or four side welds. the 6. The beam-column joint connection device of multi-high-rise fabricated steel structure system according to claim 4, characterized in that: the upper column flange (3) and the lower column flange (4) are respectively connected to the Two, three or four sides of the flange (8) at the upper end of the stub column and the flange (6) at the lower end of the node stub column are connected. the