CN104652615A - Beam-column joint connection device of assembly type steel structure system - Google Patents

Abstract

The invention relates to a beam-column node connecting device of an assembled steel structure system, belonging to the technical field of structural engineering. The column base connecting plate and the joint short column, the upper end flange of the joint short column, and the lower end flange of the joint short column are welded together in the 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 Factory welded into one. Only bolts are required for on-site assembly. The welding part of the node connection device of the present invention can be completed in the factory, and the bolts are used for on-site assembly. The fastening work of the bolts is convenient and quick, and the construction speed and quality are greatly improved, which is suitable for the development of assembled steel structures. At the same time, the nodes of the present invention are rigid Node, good ductility, strong bearing capacity.

Description

A beam-column node connection device for a prefabricated steel structure system

technical field

The invention relates to a beam-column node connecting 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. It 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 beam-column joint connection device of an assembled steel structure system, the purpose of which is to overcome the defects of the prior art, meet the mechanical properties of the joints, realize the rigid connection of the beam-column joints, and realize the assembly of the structure, improving The assembly speed of the components fully adapts to the requirements and characteristics of the fabricated steel structure system.

The technical solution of the present invention is a beam-column node connecting device of an assembled steel structure system, the connecting device includes a column base connecting plate, a solid web beam, a splint, an upper column flange, a lower column flange, and the lower end of a node short column Flange, joint short column and upper end flange of joint short column; the upper end flange of the joint short column and the lower end flange of the joint short column are respectively welded to the upper and lower ends of the joint short column; the column base connecting plate is welded to The outer side of the node short column, and the connecting plate and the lower end of the column base are respectively welded with the upper end flange of the node short column and the lower end flange of the node short column; the upper column flange and the lower column flange are respectively welded to the upper and lower columns. Integral; the upper end flange of the node short column is connected to the upper column flange by bolt a, the lower end flange of the node short column is connected to the lower column flange by bolt a; the two splints are connected to the column seat connecting plate by bolts And the web connection of the solid web beam; the upper column flange and the lower column flange are respectively connected with the upper and lower flanges of the solid web beam through bolts b;

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 and the vertical axis of the vertical cross section of the solid web beam.

The connecting plate of the column base is welded into one body with the node stub, the upper end flange of the node stub, and the lower end flange of the node stub in the factory; the upper column flange and the upper column are welded together in the factory; the lower column The flange and the lower column are welded together in the factory.

The connecting plate of the column base and the flange of the solid web beam are connected by splints and two 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 base connecting plate is welded to the side of the node short 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 beam-column joint connection device of the assembled steel structure system of the present invention, some parts can be completed by welding 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 for workers to operate, greatly Improve 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, due to the reasonable bolt arrangement, 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 and realize Strong nodes and weak components.

Description of drawings

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

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

Fig. 3 is a schematic diagram of the welding of short column flange members of the present invention;

Fig. 4 is a schematic diagram of welding of a column and a column end flange of the present invention;

Fig. 5 is the schematic diagram of the structure of beam-column joint solid web beam member of the present invention;

Fig. 6 is a schematic diagram of the splint of the beam-column node member of the present invention;

In the figure, 1-column seat connecting plate, 2-solid web beam, 3-plywood, 4-upper column flange, 7-lower column flange, 5-node short column lower end flange, 9-node short column, 6 -Flange at the upper end of the node short column, 8-upper column, 13-lower column, 10-bolt a, 11-bolt b, 12-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 the accompanying drawings, the column base connecting plate (1) is welded to the outer surface of the node short column (9), and the upper and lower ends of the column base connecting plate (1) are respectively connected to the upper end flange (6) of the node short column, the node short column The lower end flange (5) is welded into one; the upper column flange (4) and the lower column flange (7) are welded to the upper and lower columns respectively; the upper end flange (6) of the node short column and the upper column method The flange (4) is connected by bolt a (10), the lower end flange (5) of the short column of the node and the flange (7) of the lower column are connected by bolt a (10); the two splints (3) are connected by bolt c (12) Connect with the column seat connecting plate (1) and the web of the solid web beam (2); the upper column flange (4) and the lower column flange (7) are respectively connected with the upper and lower wings of the solid web beam (2) Edges are connected by bolt b (11).

The column seat connecting plate (1) and the joint short column (9) and the joint short column upper end flange (6), the joint short column lower end flange (5) are welded into an integral component A1 in the factory; the upper column flange (4) It is welded into one piece A2 with the upper column in the factory; the lower column flange (7) is welded into an integral component A3 with the lower column in the factory. Connect A1, A2, and A3 through bolt a10, bolt b11, and bolt c12.

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 beam-column joint connecting device of a prefabricated steel structure system, characterized in that: said connecting device comprises a column base connecting plate (1), a solid web beam (2), a splint (3), an upper column flange ( 4), the lower column flange (7), the node stub lower end flange (5), the node stub column (9) and the node stub upper end flange (6); the node stub upper end flange (6) and The flange (5) at the lower end of the node short column is welded to the upper and lower ends of the node short column (9); the column base connecting plate (1) is welded to the outer surface of the node short column (9), and the column base connecting plate (1) The upper and lower ends are welded into one body with the upper end flange (6) of the node short column and the lower end flange (5) of the node short column respectively; the upper column flange (4) and the lower column flange (7) are respectively The upper and lower columns are welded as a whole; the upper end flange (6) of the node short column is connected with the upper column flange (4) through bolt a (10), and the lower end flange (5) of the node short column is connected with the lower column flange ( 7) connected by bolt a (10); the two splints (3) are connected with the column base connecting plate (1) and the web of the solid web beam (2) by bolt c (12); the upper column flange ( 4), the lower column flange (7) is respectively connected with the upper and lower flanges of the solid web beam (2) through the bolt b (11). 2. The beam-column node connection device of the fabricated steel structure system according to claim 1, characterized in that: the vertical axis of the cross-section of the column base connecting plate (1) and the vertical axis of the side of the node short column (9) aligned to the vertical axis and the vertical cross-section vertical axis of the solid web beam (2). 3. The beam-column node connecting device of the fabricated steel structure system according to claim 1, characterized in that: the column base connecting plate (1) and the node short column (9) and the upper end flange of the node short column (6 ), the lower end flange (5) of the node short column is welded into one in the factory; the upper column flange (4) and the upper column are welded into one in the factory; the lower column flange (7) and the lower column are Welded into one. 4. The beam-to-column joint connection device of the fabricated steel structure system according to claim 1, characterized in that: the column base connecting plate (1) and the flange of the solid web beam (2) pass through the splint (3) And two rows of bolts c (12) are connected. 5. The beam-column node connecting device of the fabricated steel structure system according to claim 1, characterized in that: the cross-section of the node short column (9) is square; the upper end flange (6) of the node short column and The flanges (5) at the lower end of the node short column are all square. 6. The beam-column node connection device of the fabricated steel structure system according to claim 1, characterized in that: the column base connecting plate (1) is welded to the side of the node short column (9). 7. The beam-column joint connection device of the fabricated steel structure system according to claim 1, characterized in that: the upper column flange (4) and the lower column flange (7) are respectively connected to the short column The upper end flange (6) is connected with two, three or four sides of the lower end flange (5) of the node short column.