Rigidity-variable profile steel connecting piece for field assembly construction

Abstract

The utility model discloses a variable stiffness profile steel connecting piece for field assembly construction, which belongs to the technical field of bridge engineering and is arranged on a steel beam flange plate, the steel beam flange plate is provided with two oppositely symmetrical angle steels with adjustable spacing, and at least one elastic connecting rod is detachably connected between vertical plates of the two angle steels; a plurality of mutually matched bolt holes are respectively formed in the flat plate of the angle steel and the flange plate of the steel beam, and a high-strength bolt is arranged in the mutually matched bolt holes. According to the variable rigidity type steel connecting piece for on-site assembly construction, the high-strength bolts are arranged at the screw holes, welding between the bottom plate and the flange plate can be omitted, and meanwhile the shear bearing capacity can be improved; in addition, by adjusting the number of the high-strength bolts and the distance between the angle steel, accurate matching of the shear-resistant bearing capacity within the unit length can be achieved. The structure is simple, connection is adjustable, stability is good, and operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, specifically relating to a variable stiffness steel connector for on-site assembly. Background Technology

[0002] Steel-concrete composite structures are novel structures that connect steel and concrete using shear connectors, allowing each material to exert its own mechanical properties. Shear connectors are crucial components of steel-concrete composite structures, and their rational design is key to ensuring the combined load-bearing capacity of the structure. Compared to stud connectors, angle steel connectors exhibit smaller deformation, higher load-bearing capacity, and greater stiffness, thus eliminating the need for large-area deployment. Furthermore, the readily available source of angle steel has led to their widespread application in engineering practice. However, with the development of composite structures, shear connectors, as an important component, face higher demands on their shear resistance. In composite structures, angle steel and steel beam flanges are typically connected by bolts, and the number and arrangement of these bolts directly affect the shear capacity of the angle steel connectors. On the other hand, composite structures are inevitably affected by various factors during bridge engineering applications. Adjusting the spacing of connecting rods in composite structures to vary stiffness allows for better adaptation to the shear requirements of different bridges. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a variable stiffness steel connector for on-site assembly and construction, which has a simple structure, adjustable connection, good stability and convenient operation.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0005] This utility model provides a variable stiffness steel connector for on-site assembly and construction. It is installed on the flange plate of a steel beam. The flange plate of the steel beam has two symmetrical angle steels facing each other with adjustable spacing. At least one elastic connecting rod is detachably connected between the upright plates of the two angle steels. The flat plate of the angle steel and the flange plate of the steel beam are respectively provided with a number of matching bolt holes, and a high-strength bolt is inserted into the matching bolt holes.

[0006] Furthermore, the flat plate of the angle steel and the flange plate of the steel beam are respectively provided with three matching bolt holes at equal intervals along the connection direction of the angle steel and on the same straight line.

[0007] Furthermore, the bolt holes on the angle steel are located on the central axis of the flat plate of the angle steel.

[0008] Furthermore, the elastic connecting rod includes two connecting rods and an elastic spring. One end of each of the two connecting rods is connected to the upright plate of the corresponding angle steel, and the other end of each of the two connecting rods is connected to both ends of the spring.

[0009] Furthermore, the upright plate of the angle steel is provided with an internally threaded sleeve, and one end of the connecting rod is provided with an external thread and is threadedly connected to the sleeve.

[0010] Furthermore, the sleeve is disposed through the upright plate of the angle steel, configured to connect the connecting rod on one side of the upright plate of the angle steel or to connect two different connecting rods on both sides simultaneously.

[0011] Furthermore, the detachable connection between the two upright plates of the angle steel has two parallel, spaced-apart elastic connecting rods.

[0012] Furthermore, the two angle steels are configured to be symmetrical about their inner angle sides or their outer angle sides.

[0013] This utility model's variable stiffness steel connector for on-site assembly uses angle steels arranged in opposite directions with adjustable spacing on the flange plates of steel beams. At least one elastic connecting rod is attached to each angle steel. This allows for variable stiffness by adjusting the length of the elastic connecting rod, thereby adjusting the distance between the angle steel plates, and also resists pull-out forces caused by lateral bending moments. High-strength bolts and bolt holes connect the angle steels and the steel beam flange plates, eliminating the need for welding. The high-strength bolts also provide some shear resistance. Furthermore, the shear capacity can be adjusted by changing the number of high-strength bolts. The connector's overall structure is simple and practical, easy to install and operate, and exhibits good overall stability. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a variable stiffness steel connector for on-site assembly and construction provided by an embodiment of this utility model.

[0015] Figure 2 A schematic diagram of a sleeve welded to an opening in an angle steel upright plate, provided according to an embodiment of this utility model.

[0016] Figure 3 A schematic diagram of the steel beam flange plate provided in an embodiment of this utility model.

[0017] Figure 4 A schematic diagram of the angle steel provided in the embodiment of this utility model.

[0018] Figure 5 A top view of a variable stiffness steel connector for on-site assembly construction according to an embodiment of this utility model.

[0019] Figure 6A side view of a variable stiffness steel connector for on-site assembly construction provided according to an embodiment of this utility model.

[0020] In the picture:

[0021] 1. Steel beam flange plate; 2. Angle steel; 3. Vertical plate; 4. Flat plate; 5. High-strength bolt; 6. Sleeve; 7. Connecting rod; 8. Spring; 9. Bolt hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1 and Figure 5As shown, this embodiment of the utility model provides a variable stiffness steel connector for on-site assembly. It is mounted on a steel beam flange plate 1. Two symmetrical angle steels 2 with adjustable spacing are mounted on the steel beam flange plate 1, and at least one elastic connecting rod is detachably connected between the upright plates 3 of the two angle steels 2. Several matching bolt holes 9 are respectively opened on the flat plate 4 of the angle steel 2 and the steel beam flange plate 1, and a high-strength bolt 5 is inserted into each of the matching bolt holes 9. Figure 1 , Figure 3 ,and Figure 4 .

[0026] Specifically, three matching bolt holes 9 are evenly spaced along the connection direction of the angle steel 2 on the flat plate 4 and the flange plate 1 of the steel beam, respectively. In some embodiments, the shear bearing capacity can be adjusted by adjusting the number of high-strength bolts. It should be noted that in this embodiment, the number of high-strength bolts and bolt holes can also be 4, 5, or 6, depending on the actual situation.

[0027] Considering factors such as stability, the bolt holes 9 on the angle steel 2 are located on the central axis of the flat plate 4 of the angle steel 2. In this embodiment, the elastic connecting rod includes two connecting rods 7 and an elastic spring 8. One end of each connecting rod 7 is connected to the corresponding vertical plate 3 of the angle steel 2, and the other end of each connecting rod 7 is connected to both ends of the spring 8. The stiffness can be varied by adjusting the length of the spring 8 between the vertical plates 3 of the angle steel 2. At the same time, the connecting part can be used to resist the pull-out force caused by the lateral bending moment.

[0028] To facilitate disassembly and installation, the upright plate 3 of the angle steel 2 is equipped with an internally threaded sleeve 6, and one end of the connecting rod 7 is threaded to the sleeve 6. Figure 2 As shown.

[0029] Furthermore, the sleeve 6 is disposed through the upright plate 3 of the angle steel 2, and is configured to connect a connecting rod 7 on one side of the upright plate 3 of the angle steel 2 or to connect two different connecting rods 7 on both sides simultaneously. For example, when an angle steel 2 is simultaneously matched and connected to other angle steel 2 on both sides, different connecting rods 7 are connected to both ends of the sleeve 6 respectively.

[0030] In some embodiments, the two angle steels 2 are configured to be symmetrical about their inner angle sides or their outer angle sides.

[0031] like Figure 1 As shown, two parallel, spaced-apart elastic connecting rods are detachably connected between the upright plates 3 of the two angle steels 2. Simultaneously, two sleeves 6 are provided on the upright plates 3 of the angle steels 2 for matching and connecting the two elastic connecting rods, as shown. Figure 6 As shown.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A variable stiffness steel connector for on-site assembly, mounted on the flange plate of a steel beam, characterized in that, The steel beam flange is provided with two symmetrical angle steels facing each other with adjustable spacing, and at least one elastic connecting rod is detachably connected between the upright plates of the two angle steels. The angle steel plate and the steel beam flange plate are respectively provided with a number of matching bolt holes, and a high-strength bolt is applied in the matching bolt holes.

2. The field-fabricated, variable stiffness steel connection of claim 1, wherein, The flat plate of the angle steel and the flange plate of the steel beam are respectively provided with three matching bolt holes at equal intervals along the connection direction of the angle steel and on the same straight line.

3. The field-fabricated construction variable stiffness steel connection of claim 2, wherein, The bolt holes on the angle steel are located on the central axis of the flat plate of the angle steel.

4. The field-fabricated, variable stiffness steel connection of claim 1, wherein, The elastic connecting rod includes two connecting rods and an elastic spring. One end of each of the two connecting rods is connected to the upright plate of the corresponding angle steel, and the other end of each of the two connecting rods is connected to both ends of the spring.

5. The field-fabricated, variable stiffness steel connection of claim 4, wherein, An internally threaded sleeve is provided on the upright plate of the angle steel, and an external thread is provided on one end of the connecting rod and threadedly connected to the sleeve.

6. The field-fabricated, variable stiffness steel connection of claim 5, wherein, The sleeve is disposed through the upright plate of the angle steel, and is configured to connect the connecting rod on one side of the upright plate of the angle steel or to connect two different connecting rods on both sides simultaneously.

7. The field-fabricated, variable stiffness steel connection of claim 1, wherein, The detachable connection between the two upright plates of the angle steel has two parallel, spaced-apart elastic connecting rods.

8. The field-fabricated, variable stiffness steel connection of claim 1, wherein, The two angle steels are configured to be symmetrical about their inner angles or their outer angles.

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