CN203334436U - Novel dog-bone type beam column joint - Google Patents

Abstract

The utility model discloses a novel dog-bone beam-column joint, which comprises a steel column and a well-shaped steel plate. The steel column is a square steel tube, and two strip-shaped steel plate holes are opened on the four sides of the square steel tube. And the upper and lower square steel pipes of the two steel plate holes are also fixedly connected with angle steel; the well-shaped steel plate is inserted into the above-mentioned steel plate hole, and the plate end of the well-shaped steel plate is connected with a dog-bone steel beam; The well-shaped steel plate and the dog-bone steel beam and the dog-bone steel beam and the angle steel are connected by high-strength bolts; the above-mentioned steel column and the dog-bone steel beam form a beam-column joint with a cross-section. The utility model has the advantages of simple structure, convenient installation and maintenance, and the beam-column node in the utility model has higher bending moment bearing capacity and plastic rotation capacity.

Description

A new dog-bone beam-column joint

technical field

The utility model relates to a beam-column joint, in particular to a novel dog-bone beam-column joint. the

Background technique

Due to the unreasonable design of the beam-column joint joints of the steel structure, severe earthquake damage will occur during strong earthquakes. In the Northridge earthquake in the United States in 1994 and the Hanshin earthquake in Japan in 1995, hundreds of high-rise steel structure buildings were destroyed due to beam-column joint damage. Therefore, modern buildings have higher and higher requirements for the seismic resistance of structures. The traditional beam-to-column connection method is to connect the beam flange and the column through a full-penetration butt weld, web and column, and use high-strength bolts. This connection method does not meet the expected seismic design requirements. The cracks at the junction of the backing plate of the lower flange and the column will also cause damage to the steel structure if the crack expands into the column flange, and these damages are mainly related to the following factors: the defects of the weld itself, the current rigid connection method caused the High stress in the edge groove weld, adverse effects of excessive shear force and deformation of the column gusset plate, low impact toughness of the weld metal, etc. the

This shows that the prior art needs to be further improved and improved. the

Utility model content

In order to avoid the disadvantages of the above-mentioned prior art, the utility model provides a new dog-bone beam-column joint that can improve the plastic rotation capacity of the joint. the

The technical scheme adopted in the utility model is:

A new type of dog-bone beam-column joint, including a steel column and a well-shaped steel plate, the steel column is a square steel tube, and two strip-shaped steel plate holes are opened on the four sides of the square steel tube, and the two steel plates The upper and lower square steel pipes of the hole are also fixedly connected with angle steel; the well-shaped steel plate is inserted in the above-mentioned steel plate hole, and the plate end of the well-shaped steel plate is connected with a dog-bone steel beam; the well-shaped steel plate and The dog-bone steel beam and the dog-bone steel beam and the angle steel are connected by high-strength bolts; the above-mentioned steel column and the dog-bone steel beam form a beam-column joint with a cross-section. the

The cross-section of the dog-bone steel beam is "I" shape, which includes an upper flange, a lower flange and a web connecting the upper and lower flanges, and the relative position of one end of the upper and lower flanges Both are provided with first screw holes, and the upper and lower flanges close to the first screw holes are provided with arc-shaped notches, and the end of the web connected with the above-mentioned well-shaped steel plate is provided with second screw holes. the

One side of the angle steel is welded with the square steel pipe, and the other side is suspended in the air with a third screw hole opened thereon. the

The plate ends of the well-shaped steel plates are provided with fourth screw holes equal to the number of the second screw holes. the

Owing to adopting above-mentioned technical scheme, the beneficial effect that the utility model obtains is:

1. The dog-bone steel beam in the utility model can effectively form a plastic hinge, reduce the possibility of beams and columns being torn and damaged at joints, and play the role of "earthquake fuse"; the dog-bone steel beam weakens the corresponding parts The rotation capacity and range of the plastic hinge are larger than those of the plastic hinge at the root of the beam end, and the dog-bone steel beam with weakened beam flange can improve the deformation and energy dissipation capacity of the joint. the

2. The structure of the well-shaped steel plate in the utility model is firm, which further improves the integrity of the beam-column joint, and the joint rigidity is relatively large; in addition, the pipe wall of the well-shaped steel plate and the square steel pipe no longer needs to be welded, which reduces the work during construction quantity. the

3. The well-shaped steel plate in the utility model is placed vertically, which is not only easy to pour concrete, but also can ensure the quality of concrete in the core area of the joint in the square steel pipe. the

4. The utility model can control the bending moment bearing capacity of the joint by controlling the model size of the angle steel, the number of high-strength bolts and the corresponding screw holes, so that the joint itself has better plastic rotation capacity, and can be better under the action of earthquakes. dissipate energy. the

Description of drawings

Fig. 1 is the structural representation of square steel pipe in the utility model. the

Fig. 2 is a structural schematic diagram of a dog-bone steel beam in the utility model. the

Fig. 3 is a structural schematic diagram of a well-shaped steel plate in the utility model. the

Fig. 4 is a top view of the utility model. the

in,

1. Square steel pipe 2. Angle steel 3. Steel plate hole 4. Third screw hole 5. Upper flange 6. Web plate 7. Lower flange 8. Arc notch 9. First screw hole 10. Second screw hole 11 , fourth screw hole 12, well-shaped steel plate 13, dog-bone steel beam 14, high-strength bolts

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the utility model is not limited to these embodiments. the

As shown in Figures 1 to 4, a novel dog-bone beam-column joint comprises a steel column and a well-shaped steel plate 12, the steel column is a square steel tube 1, and four sides of the square steel tube 1 are opened with Two strip-shaped steel plate holes 3 and the upper and lower square steel pipes 1 of the two steel plate holes 3 are also fixedly connected with angle steel 2; one side of the angle steel 2 is welded with the square steel pipe 1, and the other side is suspended and opened on it. There is a third screw hole 4; the well-shaped steel plate 12 is inserted into the above-mentioned steel plate hole 3, and the plate end of the well-shaped steel plate 12 is connected with a dog-bone steel beam 13; the cross-section of the dog-bone steel beam 13 In the shape of "I", it includes an upper flange 5, a lower flange 7 and a web 6 connecting the upper and lower flanges, and a first screw is provided at the relative position of one end of the upper and lower flanges. The hole 9 and the upper and lower flanges close to the first screw hole 9 are provided with an arc-shaped notch 8, and the plate end of the web 6 connected to the above-mentioned well-shaped steel plate 12 is provided with a second screw hole 10; The plate ends of the well-shaped steel plate 12 are all provided with the fourth screw holes 11 equal to the number of the second screw holes 10; They are all connected by high-strength bolts 14; the above-mentioned steel columns and dog-bone steel beams 13 form a beam-column node with a cross-section approximately. the

Although terms such as square steel pipe 1, steel plate hole 3, web plate 6, first screw hole 9, well-shaped steel plate 12, and dog-bone steel beam 13 are often used in this article, the possibility of using other terms is not excluded sex. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model. the

It should be further explained that the specific embodiments described herein are only illustrations for the spirit of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range. the

Claims (4)

1. The utility model provides a novel dog bone formula beam column node which characterized in that: the steel column is a square steel pipe, two strip-shaped steel plate holes are formed in four side faces of the square steel pipe, and angle steel is fixedly connected to the square steel pipe above and below the two steel plate holes; the groined steel plate is inserted in the steel plate hole, and the plate end of the groined steel plate is connected with a dog-bone steel beam; the groined steel plate and the dog-bone steel beam as well as the dog-bone steel beam and the angle steel are connected through high-strength bolts; the steel upright post and the dog-bone steel beam form a beam-column joint with an approximately cross-shaped section.

2. The novel dog-bone beam-column joint of claim 1, wherein: the cross-section of dog bone formula girder steel is "worker" font, and it includes the top flange, the bottom flange and connects the web on upper and bottom flange, the relative position department of the one end on upper and bottom flange has all seted up first screw and has been close to all be provided with the arc notch on the upper and bottom flange of this first screw, the second screw has been seted up to the board end that web and above-mentioned groined type steel sheet link to each other.

3. The novel dog-bone beam-column joint of claim 2, wherein: one side of the angle steel is welded with the square steel pipe, and the other side of the angle steel is suspended and provided with a third screw hole.

4. The novel dog-bone beam-column joint of claim 2, wherein: and the plate ends of the # -shaped steel plates are provided with fourth screw holes with the number equal to that of the second screw holes.

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