CN206667470U - A kind of end plate assembled channel-section steel for recovering function punches beam column node connection device - Google Patents

Abstract

The utility model relates to an end-plate assembled channel-steel opening beam-column joint connection device with recoverable function, which belongs to the field of structural engineering. A recoverable function end-plate assembly type channel steel opening beam-column joint connection device is composed of a square steel pipe column with a cantilever beam section, a channel steel opening beam section and a connecting device between the two. The welding parts of the node connection device of the utility model are all completed in the factory, and the precision and quality of the weld seam are easier to control, and the space structure of the channel steel hole beam section is conducive to pipeline penetration; the channel steel hole beam can be assembled with the floor slab in the factory, A modular assembly unit is formed, and then at the construction site, each assembly unit is assembled and connected through a channel steel hole beam and a square steel pipe column with a cantilever beam section. The joint of the utility model is a combination of beam end reinforcement and cover plate connection weakening, which can realize the triple energy consumption of bolt friction slip and flange connection plate and bolt plastic deformation, and transfer the plastic hinge to the cover plate and connection plate, After the earthquake, it is only necessary to replace the connection plate to restore the function of the structure.

Description

A recoverable function end-plate assembly type channel steel opening beam-column joint connection device

technical field

The patent relates to a recoverable end plate assembly type channel steel opening beam-column node connection device, which belongs to the technical field of structural engineering.

Background technique

The prefabricated building system has significant advantages such as short design and manufacturing cycle, integrated design and production, low labor intensity, high production efficiency, energy saving and environmental protection, and good comprehensive economic benefits. It has become an important form of construction and housing in developed countries such as Europe, America, Japan, and Australia.

Following the Northridge Earthquake and the Hanshin Earthquake, extensive and in-depth studies have been conducted on the failure causes of beam-column welded rigid joints, and various measures to improve the seismic performance of beam-column joints have been proposed. It can be mainly divided into two types: improving the weld performance of beam-column joints and moving the plastic hinge outward, among which there are more studies on the outward movement of the plastic hinge. The frame beam and column are connected through the cantilever beam section, which can make use of its own structural characteristics to move the plastic hinge position away from the column surface, and use the sliding of high-strength bolts to dissipate energy. Under the condition of ensuring the strength of beam-column joints, the beam-column joints are protected from brittle failure in this way. This beam-to-column joint is composed of two parts, one is the welding connection between the beam and the column, which is processed by the factory; the other is the splicing of the beam and the beam, which is completed at the construction site. Beam-column welding connection processing is completed in the factory, which is not only easy to manufacture but also ensures the accuracy and quality of the weld seam. The beam-to-beam splicing is connected by friction-type high-strength bolts, which is convenient and quick to install. Since only high-strength bolts are spliced at the construction site, no on-site welding is required, and it is less affected by the climate conditions of the site, which greatly improves the construction speed. The existing beam-column joints mainly have the following disadvantages: ①The beam-column connection mostly adopts the connection form of on-site welding, the quality of the weld cannot be guaranteed, and the weld at the beam-column joint is prone to brittle fracture under earthquake action; ②In the column Most of the ends are reinforced by adding splicing plates or adding haunches, and multiple welds are superimposed, and the stress generated is more complicated. ③The installation and disassembly process of prefabricated steel structure buildings can realize full assembly, but in terms of post-earthquake repair, it is no different from traditional steel structure buildings, and cannot achieve "prefabricated with rapid recovery function".

In order to overcome the above problems, the utility model patent proposes a recoverable end plate assembly type channel steel opening beam-column joint connection device.

The utility model patent proposes a recoverable end-plate-mounted channel-steel open-hole beam-column joint connection device, which consists of a square steel pipe column with a cantilever beam section, a channel-steel open-hole beam section and a connecting device between them. The square steel pipe column with cantilever beam section is welded by the upper steel pipe column, the middle steel pipe column, the lower steel pipe column, the upper square partition, the lower square partition and the web of the cantilever beam section. The upper steel pipe column and the middle steel pipe column are respectively welded with the upper square partition; the lower steel pipe column and the middle steel pipe column are respectively welded with the lower square partition. The channel steel hole beam section is formed by connecting two channel steel hole beams through the first bolt group. The channel steel hole beam can be assembled with the floor slab in the factory to form a modular assembly unit, and then each assembly unit is passed through at the construction site. The channel steel opening beam and the square steel pipe column with cantilever beam section are assembled and connected. The connecting device between the square steel pipe column with the cantilever beam section and the channel steel opening beam section consists of the upper connecting plate on the upper flange, the lower connecting plate on the lower flange, the lower connecting plate on the upper flange, the upper connecting plate on the lower flange, and the upper connecting plate on the lower flange. Flange backing plate, lower flange backing plate, L-shaped connecting plate, channel steel opening beam end plate and high-strength bolt group.

The upper flange connecting plate and the lower flange connecting plate in the connecting device may not be provided with a dog-bone weakening area, or may be set as an arc dog-bone weakening area or a flat dog-bone weakening area, and the size of the dog-bone weakening area is based on Realistic design.

The square steel pipe column is hollow inside, or concrete is poured; the square steel pipe column can also be replaced by a round steel pipe column.

The node connection device can also adopt the flange single cover plate connection form.

Contents of the invention

The utility model provides an end plate assembly type channel steel opening beam-column node connecting device with recoverable functions, which belongs to the field of structural engineering. The welding part of the node connection device of the utility model is completed in the factory, and the precision and quality of the weld seam are easier to control. Only high-strength bolts and splicing plates are used on site to assemble square steel pipe columns with cantilever beam sections and channel steel open beam sections. , The bolt fastening work is convenient and fast, the construction speed and construction quality are greatly improved, and it is suitable for the development of fabricated steel structures.

A recoverable end-plate-assembled channel-steel open-hole beam-column joint connection device, consisting of a square steel-steel column with a cantilever beam section, a channel-steel open-hole beam section, and a connecting device between them;

The square steel pipe column with cantilever beam section is welded by the upper steel pipe column, the middle steel pipe column, the lower steel pipe column, the upper square partition, the lower square partition and the web of the cantilever beam section. The upper steel pipe column and the middle steel pipe column are respectively welded with the upper square partition; the lower steel pipe column and the middle steel pipe column are respectively welded with the lower square partition; Plate welding; among them, the upper square partition and the lower square partition are divided into three parts, which are the square ring part, the square arc connection part and the flange part. The square ring part is used as the strengthening part of the node domain, the square arc connection part is used as the haunch part of the beam end, and the flange part is used as the splicing part with the channel steel opening beam section. The inner dimension of the upper square partition and the lower square partition are smaller than the inner dimension of the square steel pipe column, and the outer dimension is larger than the outer dimension of the square steel pipe column, and the thickness of the square partition is greater than the thickness of the flange of the channel steel opening beam section;

The channel steel hole beam section is spliced by two channel steel hole beams with bolts. The channel steel hole beam can be assembled with the floor in the factory to form a modular assembly unit, and then each assembly unit is opened by channel steel at the construction site. Hole beams and square steel pipe columns with cantilever beam sections are assembled and connected. The upper flange of the channel steel hole beam and the upper connecting plate of the upper flange, the backing plate of the upper flange and the lower connecting plate of the upper flange are connected by high-strength bolts, and the lower flange of the channel steel hole beam and the lower flange of the lower flange The connecting plate, the backing plate of the lower flange and the upper connecting plate of the lower flange are connected by high-strength bolts, and the web side of the channel steel holed beam section is welded with the channel steel holed beam end plate; The plate is connected to the main body of square steel pipe column with cantilever beam section through high-strength bolts and L-shaped connecting plate;

The connecting device between the square steel pipe column with the cantilever beam section and the channel steel opening beam section consists of the upper connecting plate on the upper flange, the lower connecting plate on the lower flange, the lower connecting plate on the upper flange, the upper connecting plate on the lower flange, and the upper connecting plate on the lower flange. Flange backing plate, lower flange backing plate, L-shaped connecting plate, channel steel opening beam end plate and high-strength bolt group;

The upper connecting plate of the upper flange and the upper square partition, the channel steel opening beam section; the lower connecting plate of the upper flange and the backing plate of the upper flange, the upper connecting plate of the upper flange; the upper connecting plate of the lower flange and the pad of the lower flange plate, the lower connecting plate of the lower flange; the L-shaped connecting plate and the end plate of the channel steel hole beam; the connection plate between the lower connecting plate of the lower flange and the lower square partition, and the channel steel hole beam section are all passed through single or multiple rows of bolts group connection;

During the construction and installation of the connection device, first connect the two channel steel hole beams through the first bolt group, and secondly, connect the lower connecting plate of the lower flange with the lower square partition and the upper connecting plate of the lower flange through the bolt group, and then connect the The backing plate of the lower flange and the channel-steel opening beam section are successively placed on the lower connecting plate of the extended lower flange. At the same time, connect the L-shaped connecting plate and the web of the cantilever beam with bolts through the reserved screw holes. Finally, connect the upper connecting plate of the upper flange with the upper square partition, the backing plate of the upper flange, and the channel steel hole beam section through the bolt group, and connect the L-shaped connecting plate and the channel steel hole beam end plate through the bolt group , so far the assembly is complete;

The square steel pipe column can be hollow inside the pipe, or poured with concrete, and can also be replaced by a round steel pipe column;

The upper flange connecting plate and the lower flange connecting plate in the connecting device may not be provided with a dog-bone weakening area, or may be set as an arc dog-bone weakening area or a flat dog-bone weakening area, and the size of the dog-bone weakening area is based on Realistic design.

The node connection device can also adopt the flange single cover plate connection form.

The advantages of this patent are mainly manifested in the following aspects:

1. Not only can it adapt to the current prefabricated steel structure system, but also can achieve the purpose of energy consumption and plastic hinge outward movement through the joint effect of weak splicing joint design and increasing the thickness of square reinforced partitions, without the need for additional cover plates Beam end strengthening measures such as stiffeners, stiffeners and side plates reduce the difficulty of construction and avoid the complex stress field of multiple welds.

2. The welding part of the joint connection device of the present invention is completed in the factory, and the accuracy and quality of the weld seam are easier to control. Only high-strength bolts, connecting plates and connecting pieces are used on site to open square steel pipe columns and channel steel with cantilever beam sections. The hole beam section is assembled, and the bolt fastening work is convenient and quick, and the construction speed and construction quality are greatly improved, which is suitable for the development of fabricated steel structures.

3. This node can also improve the ductility and rotation capacity of the node by adjusting the design parameters such as the size of the bolt hole, the layout of the bolt and the weakened area of the dog bone, and ensure that the node has a good energy dissipation capacity. No collapse occurs, thereby protecting the safety of personnel.

4. The channel steel opening beam can realize the penetration of pipelines, which greatly exerts the structural advantages of the beam itself; at the same time, the splicing of two channel steel opening beams facilitates the assembly and molding of the channel steel opening beam and the floor slab factory to form a modular structure Assembling units, and then at the construction site, each assembly unit is assembled and connected through channel steel opening beams and square steel pipe columns with cantilever beam sections.

Description of drawings

Fig. 1 is a three-dimensional diagram of the structural form of an end-plate assembly type channel steel opening beam-column joint connection device with recoverable functions;

Fig. 2 is a three-dimensional on-site installation diagram of a structural form of an end-plate assembly type channel steel opening beam-column node connection device with a recoverable function;

Fig. 3 is a front view of the structural form of a reversible end plate assembled channel steel opening beam-column node connection device;

Fig. 4 is a side view of the structural form of a reversible end plate assembled channel steel opening beam-column node connection device;

Fig. 5 is a top view of the structural form of a reversible end plate assembled channel steel opening beam-column node connection device;

Fig. 6 is a three-dimensional diagram of the structural form of a reversible end plate assembled channel steel opening beam-column node connection device (single cover plate);

Fig. 7 is a top view of the structure form of the flange connection plate of the end plate assembly type channel steel opening beam-column node connection device with recoverable function;

Fig. 8 is a three-dimensional diagram of the structural form of a modular assembly unit composed of a recoverable end-plate assembled channel steel opening beam-column node connection device and a floor;

Fig. 9 is a top view of the assembled four modular assembly units of a recoverable function end-plate-assembled channel-steel opening beam-column node connection device.

detailed description

Below in conjunction with accompanying drawing, the embodiment of this patent is described in detail.

As shown in Figure 1, a recoverable end-plate assembly type channel steel opening beam-column joint connection device includes the following components:

1——The upper steel pipe column;

2——The upper square partition;

3——Chinese steel pipe column;

4——The lower square partition;

5——the lower steel pipe column;

6——The connecting plate on the lower flange;

7——The connecting plate on the upper flange;

8——L-shaped connecting plate;

9——web plate of cantilever beam section;

10——The backing plate of the lower flange;

11——The lower connecting plate of the lower flange;

12——The lower connecting plate of the upper flange;

13——upper flange backing plate;

14 - the first bolt group;

15——channel steel opening beam;

16——channel steel opening beam end plate;

17—concrete floor;

18—modular assembly unit.

As shown in Figures 1, 3, 4, and 5, the square steel pipe column with the cantilever beam section consists of the upper steel pipe column (1), the middle square steel pipe column (3), the lower steel pipe column (5), the upper square partition (2), The lower square partition (4), the web plate (9) of the cantilever beam section and the L-shaped connecting plate (8) of the cantilever beam section are formed. The upper steel pipe column (1) and the middle steel pipe column (3) are respectively welded to the upper square partition (2); the lower steel pipe column (5) and the middle steel pipe column (3) are respectively welded to the lower square partition (4); the cantilever beam The section web (9) is welded to the central steel pipe column (3), the upper square partition (2) and the lower square partition (4); the cantilever beam section web (9) is connected to the L-shaped connecting plate (8), the upper wing Lower flange connecting plate (12), lower flange upper connecting plate (6), upper flange backing plate (13), lower flange backing plate (10), upper flange upper connecting plate (7) and lower flange lower Connecting plate (11) is spliced. Wherein, the upper square partition (2) and the lower square partition (4) are divided into three parts, which are respectively a square ring part, a square arc connection part and a flange part. The square ring part is used as the strengthening part of the node domain, the square arc connection part is used as the haunch part of the beam end, and the flange part is used as the splicing part with the channel steel opening beam section. The inner dimension of the upper square partition (2) and the lower square partition (4) are smaller than the inner dimension of the square steel pipe column, the outer diameter is larger than the outer dimension of the square steel pipe column, and the thickness of the square partition is larger than the channel steel opening Beam flange thickness;

As shown in Figure 2, the channel steel hole beam section is spliced by the channel steel hole beam (15) and the first bolt group (14); the channel steel hole beam end plate (16) and the channel steel hole beam ( 15) Web welding.

The connecting device between the square steel pipe column with the cantilever beam section and the channel steel opening beam section consists of the upper connecting plate (7) of the upper flange, the lower connecting plate (11) of the lower flange, the L-shaped connecting plate (8), the upper Flange backing plate (13), lower flange backing plate (10), upper flange lower connecting plate (12), lower flange upper connecting plate (6), channel steel opening beam end plate (16) and high-strength bolts group composition.

The upper connecting plate (7) of the upper flange and the upper square partition (2), the channel steel opening beam section; the lower connecting plate (12) of the upper flange and the backing plate (13) of the upper flange, and the upper connecting plate of the upper flange (7); the upper connecting plate (6) of the lower flange and the backing plate of the lower flange (10), the lower connecting plate (11) of the lower flange; the L-shaped connecting plate (8) and the channel steel opening beam end plate (16 ); the lower connecting plate (11) of the lower flange, the lower square partition (4), and the channel steel opening beam section are all connected by single or multiple rows of bolt groups;

The upper steel pipe column (1), the middle steel pipe column (3), and the lower steel pipe column (5) can be hollow inside the pipe, or concrete can be poured; the square steel pipe column can also be replaced by a round steel pipe column;

As shown in Figure 7, the upper connecting plate (7) of the upper flange and the lower connecting plate (11) of the lower flange, the lower connecting plate (12) of the upper flange and the upper connecting plate (6) of the lower flange may not be provided with dogs. The bone weakening area can also be set as a circular dog bone weakening area or a flat dog bone weakening area, and the size of the dog bone weakening area is designed according to the actual situation;

As shown in Figure 2, during the on-site installation process, first connect the two channel steel hole beams (15) through the first bolt group (14), and secondly, connect the lower connecting plate (11) of the lower flange through the bolt group and The lower square dividing plate (4) and the upper connecting plate (6) of the lower flange are connected, and the lower flange backing plate (10) and the channel steel opening beam section are successively placed on the lower connecting plate (11) of the overhanging lower flange. At the same time, connect the L-shaped connecting plate (8) and the web of the cantilever beam with bolts through the reserved screw holes. Finally, connect the upper connecting plate (7) on the upper flange with the upper square partition (2), the backing plate (13) on the upper flange and the channel steel hole beam section respectively through the bolt group, and connect the L-shaped connecting plate (8) It is connected with the channel steel hole beam end plate (16) by a bolt group, and the assembly is completed so far.

The beam-column connection joints are spliced by flange double-plates. When the beam-column joints are assembled on site, the channel-steel opening beam section (15) can be placed on the lower flange connecting plate ( 11), it reduces the difficulty of hoisting and speeds up the construction progress, and the stepped structure of the assembly place makes the channel steel opening beam section and the cantilever beam section interlock with each other after being placed in place, which is easy to assemble and position on site.

As shown in Fig. 6, the node connection device may also adopt the form of flange single cover plate connection.

As shown in Figures 8 and 9, the channel steel opening beam (15) in the node connection device can be assembled with the floor (17) in the factory to form a modular assembly unit (18), and then each assembly unit at the construction site The assembly connection is realized through the channel steel opening beam and the square steel pipe column with cantilever beam section.

Claims (4)

1. An end-plate assembly type channel steel opening beam-column joint connection device with recoverable function, characterized in that: it is composed of a square steel pipe column with a cantilever beam section, a channel steel opening beam section and the connecting device of the two; The square steel pipe column with the cantilever beam section is welded by the upper steel pipe column, the middle steel pipe column, the lower steel pipe column, the upper square partition, the lower square partition and the web of the cantilever beam section; the upper steel pipe column, the middle steel pipe column Welded with the upper square partition respectively; the lower steel pipe column and the middle steel pipe column are respectively welded with the lower square partition; the four sides of the cantilever beam section web are respectively welded with the upper square partition, the middle steel pipe The diaphragm and the lower square diaphragm are divided into three parts, which are the square ring part, the arc connection part, and the flange part; the square ring part is used as the reinforcement part of the node domain, and the arc connection part is used as the end of the beam. The part and the flange section are used as splicing parts with the channel steel opening beam section; the inner dimensions of the upper square partition and the lower square partition are smaller than the inner dimension of the square steel pipe column, and the outer dimension is larger than the outer dimension of the square steel pipe column. size, and the thickness of the square partition is greater than the thickness of the flange of the channel steel hole beam section; the channel steel hole beam section is spliced by two channel steel hole beams with bolts, and the channel steel hole beam and the floor are assembled in the factory , form the assembled modular unit, and then assemble the modular unit at the construction site through the channel steel opening beam and the square steel pipe column with the cantilever beam section to realize the assembly connection; the square steel pipe column with the cantilever beam section and the channel steel opening beam section The connecting device between the upper flange is composed of upper connecting plate, lower connecting plate of lower flange, lower connecting plate of upper flange, upper connecting plate of lower flange, backing plate of upper flange, backing plate of lower flange, L-shaped connecting plate and Composed of high-strength bolt groups; the upper connecting plate of the upper flange, the lower connecting plate of the upper flange, the backing plate of the upper flange, the upper square partition, and the channel steel hole beam section are all connected by single or multiple rows of bolts Group connection; the lower connecting plate of the lower flange, the upper connecting plate of the lower flange, the backing plate of the lower flange and the lower square partition, and the channel steel opening beam sections are all connected by single or multiple rows of bolt groups. 2. The end-plate assembly-type channel-steel open-hole beam-column node connection device with recoverable function according to claim 1, characterized in that: the square steel tube column is hollow inside, or concrete is poured; the square steel tube column Can be replaced by round steel columns. 3. The end-plate-assembled channel-steel open-hole beam-column node connection device with recoverable function according to claim 1, characterized in that: neither the upper flange connection plate nor the lower flange connection plate is provided with a dog The bone weakening area may be set as an arc dog bone weakening area or a flat dog bone weakening area. 4. The end plate assembly type channel steel opening beam-column node connection device with recoverable function according to claim 1, characterized in that: the connection device adopts the flange single cover plate connection form, that is, by connecting the upper wing It can be realized by removing the connecting plate under the flange, the backing plate of the upper flange, the upper connecting plate and the backing plate of the lower flange.