CN111411697A - A kind of oblique occlusal prefabricated steel frame node element and its connection method - Google Patents

Abstract

The invention discloses an oblique snap-fit assembled steel frame node unit and a connection method thereof. The steel frame node unit includes a square steel pipe, an I-beam, and a W-shaped veneer. One end of the I-beam is installed on the side surface of the square steel pipe, and an oblique steel bayonet is provided at the flange of the end of the I-beam. The other end of the I-beam extends to the outside of the square steel pipe, the W-shaped veneer includes a W-shaped vertical steel plate and a horizontal steel plate with an oblique bayonet, and two ends of the W-shaped vertical steel plate are provided up and down respectively. There are two oblique bayonet horizontal steel plates, and the oblique bayonet grooves on the oblique bayonet horizontal steel plate are inserted along the oblique steel bayonet on the I-beam in the direction of the square steel tube, so that the W-shaped veneer is installed on the Inside the flange of the I-beam at the corner of the square steel pipe, the W-shaped veneer is fixedly connected to the I-beam. The construction of beam-column joints is carried out by the invention, no welding is required on site, the construction speed is fast, and the degree of assembly is high.

Description

A kind of oblique occlusal prefabricated steel frame node element and its connection method

technical field

The invention discloses a beam-column joint of a prefabricated steel frame structure and a connection method thereof, in particular to a prefabricated steel frame node and a connection method thereof, which require no welding for on-site construction, have high construction speed and a high degree of assembly.

Background technique

In the construction of prefabricated steel frame structures, the connection of beam-column joints has always been the key control content of construction. Most of the traditional connection methods are welding. On-site welding requires a lot of manpower and material resources, the construction speed is slow, and the welding quality is affected by the level of welding workers. Therefore, in the construction of prefabricated steel frame beam-column joints, there is an urgent need for a construction process that can replace welding, which not only meets the process requirements, but also improves the construction speed.

SUMMARY OF THE INVENTION

In order to solve the problems of complicated construction of beam-column joints of traditional prefabricated steel frame structures and difficult to guarantee construction quality, the present invention provides an oblique occlusal prefabricated steel frame joint unit, which has simple process and fast construction speed.

The present invention adopts following technical scheme:

An oblique occlusal assembled steel frame node unit, comprising a square steel pipe, an I-beam, and a W-shaped veneer, one end of the I-beam is installed on the side of the square steel pipe, and the flange of the end of the I-beam is located at the side of the square steel pipe. An oblique steel bayonet is provided, and the other end of the I-beam extends to the outside of the square steel pipe. The W-shaped veneer includes a W-shaped vertical steel plate and a horizontal steel plate with an oblique bayonet. The W-shaped vertical Two oblique bayonet horizontal steel plates are arranged at the upper and lower ends of the steel plate, and the oblique bayonet grooves on the oblique bayonet horizontal steel plate are inserted along the oblique steel bayonet on the I-beam in the direction of the square steel tube. Therefore, the W-shaped veneer is installed on the inner side of the flange of the I-beam at the corner of the square steel pipe, and the W-shaped veneer is fixedly connected to the I-beam.

Further, the square steel pipe includes an upper-layer square steel pipe, a lower-layer square steel pipe, a node prescription steel pipe and a steel support plate, wherein the size of the node prescription steel pipe is smaller than that of the upper-layer square steel pipe and the lower-layer square steel pipe, and the steel support plate is arranged at the lower part of the node, Used to support I-beams.

Further, a first reserved hole is opened at the web of the I-beam, and a second reserved hole is opened at both ends of the W-shaped veneer, and the first reserved hole and the second reserved hole are corresponding and parallel. Through high-strength bolts, the web of the I-beam and the W-shaped veneer are connected to form an assembled steel frame beam-column node unit.

Further, the oblique bayonet groove on the horizontal steel plate of the oblique bayonet and the oblique steel bayonet on the I-beam are both inclined at an angle of 45°.

Further, the flange of the I-beam is connected to each other through the oblique steel bayonet and the oblique bayonet groove of the W-shaped veneer, and the web of the I-beam is wrapped by four W-shaped veneers. After bolted connection, the whole connection does not include welded connection structure.

A connection method for obliquely snap-fitted steel frame node elements, comprising:

1) Install and fix the square steel pipe;

2) Place the I-beam on the steel pallet of the square steel pipe along the four directions of the square steel pipe, and temporarily fix the I-beam after positioning;

3) Insert the W-shaped board obliquely along the four directions of the column 45°, 135°, 225° and 315°. At this time, the oblique bayonet grooves on the upper and lower sides of the W-shaped board are just in line with the end of the I-beam. The oblique steel bayonet of the upper flange is complementary to each other, and the two steel plates in the middle of the W-shaped vertical steel plate are attached to the square steel tube, and the two steel plates at the end of the W-shaped vertical steel plate are attached to the web of the I-beam. , there are W-shaped veneers on both sides of the web of the I-beam;

4) Connect the web of the I-beam with the W-shaped veneer through high-strength bolts to form an assembled steel frame beam-column node unit.

The beneficial effects of the present invention are as follows:

In the present invention, a support plate is arranged at the beam-column node of the square steel pipe column, an oblique bayonet is arranged at the flange end of the I-beam, and the oblique bayonet and the web are at 45°, and the I-beam is placed on the support plate along four directions. . The W-shaped veneer is wrapped along the 45° direction of the beam-column joint. The groove of the horizontal steel plate with bayonet on the veneer just engages with the oblique bayonet of the beam flange. Part of the veneer is attached to the square steel pipe column, and part of the veneer is attached to the beam web. Finally, Dongguan high-strength bolts connect the veneer to the web of the I-beam to form a beam-column node unit. The construction of beam-column joints is carried out by the invention, no welding is required on site, the construction speed is fast, and the degree of assembly is high.

Description of drawings

Figure 1 is a schematic diagram of a square steel pipe column;

Fig. 2 is the schematic diagram of I-beam;

Figure 3 is a schematic diagram of a W-type sticker;

Figure 4 is an oblique elevation view of a W-shaped sticker;

Figure 5 is a top view of a W-shaped sticker;

Figure 6 is a plan view 1 of the steel frame assembly;

Figure 7 is a second plan view of the steel frame assembly;

Figure 8 is the third plan view of the steel frame assembly;

Fig. 9 is a three-dimensional schematic diagram of steel frame assembling;

Figure 10 is the second three-dimensional schematic diagram of steel frame assembly;

Figure 11 is a three-dimensional schematic diagram of steel frame assembly.

Marked in the figure: 1. Square steel pipe; 11. Upper square steel pipe; 12. Lower square steel pipe; 13. Node prescription steel pipe; 14. Steel pallet; 2. I-beam; 21. Diagonal steel bayonet; 22. Section 1. Reserved hole; 3. W-shaped veneer; 31. W-shaped vertical steel plate; 32. Horizontal steel plate with oblique bayonet; 33. Oblique bayonet groove; 34. Second reserved opening; 4. High strength bolt.

Detailed ways

In order to further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

This embodiment provides an oblique snap-fit assembled steel frame node unit as shown in FIG. 11 . The fabricated steel frame node unit includes a square steel tube 1 , an I-beam 2 , and a W-shaped veneer 3 .

As shown in FIG. 1 , the square steel pipe includes an upper square steel pipe 11, a lower square steel pipe 12, a joint prescription steel pipe 13 and a steel support plate 14. The upper square steel pipe 11 and the lower square steel pipe 12, the node prescription steel pipe 13 and the steel support plate 14 are integrally Factory prefabrication is completed, in which the size of the joint prescription steel pipe 13 is slightly smaller than that of the upper and lower square steel pipes, and the steel pallet is arranged at the lower part of the node to support the I-beam.

As shown in Figure 2, the I-beam 2 includes a web and four flanges, and an oblique steel bayonet 21 is provided at the four flanges at the end of the I-beam 2. The steel bayonet and the flange are prefabricated in the factory , a first reserved hole 22 is opened at the web of the I-beam.

As shown in Figure 3-5, the W-shaped plate 3 includes a W-shaped vertical steel plate 31 and a horizontal steel plate 32 with an oblique bayonet. Two horizontal steel plates with an oblique bayonet are provided at both ends of the W-shaped vertical steel plate 31. 32. A second reserved hole 34 is formed at each end of the W-shaped vertical steel plate.

This embodiment also provides a method for connecting the above-mentioned obliquely snap-fitted steel frame node units.

First, install and fix the square steel pipe column 1, place the I-beam 2 on the steel support plate 14 of the square steel pipe column along the four directions of the square steel pipe, as shown in Figure 6-7, and temporarily fix the I-beam after positioning and positioning , as shown in Figure 9. Insert the W-type sticker 3 diagonally along the four directions of the column 45°, 135°, 225° and 315°, as shown in Figure 8, at this time, the upper and lower sides of the W-type sticker 3 are inclined to the bayonet groove 33 It just complements the flange at the end of the I-beam and is mutually occluded. The middle two steel plates of the W-shaped vertical steel plate 31 are attached to the square steel pipe column, and the two steel plates at the end of the W-shaped vertical steel plate 31 are connected to the I-beam web. Board fit, as shown in Figure 10. Both sides of the I-beam web are fitted with W-shaped veneers. Finally, the I-beam web and the W-shaped veneer are connected by high-strength bolts 4 to form an assembled steel frame beam-column node unit, as shown in the figure 11 shown.

To sum up, the oblique occlusal assembled steel frame node unit of the present invention is mainly composed of square steel pipe columns, I-beams, W-shaped veneers, and high-strength bolts. The square steel tube column is provided with a support plate at the beam-column node, and the oblique bayonet is arranged at the flange end of the I-beam, and the inclined bayonet and the web are at 45°. The W-shaped veneer is wrapped along the 45° direction of the beam-column joint. The groove of the horizontal steel plate with bayonet on the veneer is just right to bite each other with the oblique bayonet of the beam flange. Part of the veneer is attached to the square steel pipe column, and part of the veneer is attached to the beam web. Finally, Dongguan high-strength bolts connect the veneer to the web of the I-beam to form a beam-column node unit. In the connection method of the oblique occlusal assembled steel frame node unit of the present invention, in this connection process, the flanges of the I-beam are completely connected by the steel bayonet and the groove of the W-shaped veneer. It is made by bolting after wrapping four W-shaped panels. Since no welding is required, the construction speed is improved and the degree of assembly is high.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides an oblique interlock formula assembled steel frame node unit which characterized in that: comprises a square steel pipe (1), an I-beam (2) and a W-shaped flitch plate (3), wherein one end of the I-beam (2) is arranged on the side surface of the square steel pipe (1), and the flange of the end of the I-beam (2) is provided with an oblique steel bayonet (21), the other end of the I-beam (2) extends towards the outer side of the square steel pipe (1), the W-shaped flitch plate (3) comprises a W-shaped vertical steel plate (31) and a horizontal steel plate (32) with an oblique bayonet, two oblique bayonet horizontal steel plates (32) are respectively arranged at the upper and lower parts of two ends of the W-shaped vertical steel plate (31), the inclined bayonet groove (33) on the inclined bayonet horizontal steel plate (32) is inserted along the inclined steel bayonet (21) on the I-beam (2) towards the direction of the square steel pipe (1), therefore, the W-shaped flitch (3) is arranged on the inner side of the flange of the I-shaped beam (2) at the corner of the square steel pipe (1), and the W-shaped flitch (3) is fixedly connected with the I-shaped beam (2).

2. The diagonal engagement type fabricated steel frame node unit according to claim 1, wherein: the square steel pipe (1) comprises an upper layer square steel pipe (11), a lower layer square steel pipe (12), a node square steel pipe (13) and a steel supporting plate (14), wherein the size of the node square steel pipe (13) is smaller than that of the upper layer square steel pipe (11) and that of the lower layer square steel pipe (12), and the steel supporting plate (14) is arranged on the lower portion of the node and used for supporting the I-shaped beam (2).

3. The diagonal engagement type fabricated steel frame node unit according to claim 1, wherein: a first reserved hole (22) is formed in the web plate of the I-beam (2), second reserved holes (34) are formed in the two ends of the W-shaped pasting plate (3) respectively, the first reserved hole (22) and the second reserved hole (34) correspond to each other and penetrate through a high-strength bolt (4), and the web plate of the I-beam (2) is connected with the W-shaped pasting plate (3) through the high-strength bolt (4) to form an assembly type steel frame beam column joint unit.

4. The diagonal engagement type fabricated steel frame node unit according to claim 1, wherein: the inclined bayonet grooves (33) on the inclined bayonet horizontal steel plates (32) and the inclined steel bayonets (21) on the I-shaped beam (2) are inclined at an angle of 45 degrees.

5. The diagonal engagement type fabricated steel frame node unit according to claim 1, wherein: the flange of the I-beam (2) is connected with the oblique bayonet grooves (33) of the W-shaped flitch plates (3) in an occluded mode through the oblique steel bayonets (21), the web of the I-beam (2) is connected with the web of the W-shaped flitch plates (3) in a wrapped mode through the four W-shaped flitch plates (3) through bolts, and the whole connection does not include a welding connection structure.

6. A connection method of an oblique engagement type assembly steel frame node unit comprises the following steps:

1) installing and fixing the square steel pipe (1);

2) the I-shaped beam (2) is placed on a steel supporting plate (14) of the square steel pipe (1) along four directions of the square steel pipe (1), and the I-shaped beam (2) is temporarily fixed after being placed and positioned;

3) the W-shaped flitch (3) is obliquely inserted along four directions of a column of 45 degrees, a column of 135 degrees, a column of 225 degrees and a column of 315 degrees, at the moment, oblique bayonet grooves (33) on the upper side and the lower side of the W-shaped flitch (3) are just complementary with oblique steel bayonets (21) on flanges of the end parts of the I-shaped beam (2) and are mutually meshed, two steel plates in the middle of the W-shaped vertical steel plate (31) are attached to the square steel pipe (1), two steel plates on the end parts of the W-shaped vertical steel plate (31) are attached to a web plate of the I-shaped beam (2), and the W-shaped flitch (3) is attached to the web;

4) and connecting the web plate of the I-beam (2) with the W-shaped flitch (3) through a high-strength bolt (4) to form the assembled steel frame beam-column joint unit.

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