Steel beam angle brace structure for reinforcement

Abstract

The utility model discloses a steel beam angle brace structure for reinforcement. The steel beam angle brace structure comprises a roof steel beam, a purline, an angle brace, an angle brace base, a clamp and sticky steel glue. Roof steel beams and purlines are original structures of a building. The angle brace base is fixedly connected with the lower flange of the steel beam through sticky steel glue at the corresponding position of the original roof steel beam, and after the sticky steel glue is stably and firmly connected, the four corners of the steel plate on the upper portion of the angle brace base are fixed with the lower flange of the steel beam through clamps respectively. The two ends of the angle steel angle brace are respectively provided with holes and are respectively connected with the lower base and the upper purline through bolts, and the outer stability of the steel beam plane is enhanced. According to the reinforcing method, on-site fire welding operation between the traditional angle brace base and the steel beam in the reinforcing process is avoided mainly through reasonable design of the angle brace base and the connection mode of fixing through the adhesive and the clamp, the efficiency of construction operation is improved, meanwhile, potential safety hazards of fire welding in a plant are avoided, and the safety of the plant is improved. The newly-added angle braces can effectively improve the stability outside the plane of the steel beam.

Description

Technical Field

[0001] The utility model relates to the technical field of building reinforcement methods, and specifically relates to a steel beam knee brace structure for reinforcement. Background Art

[0002] In recent years, more and more steel structure buildings have been involved in renovation and reinforcement, and the problem of out-of-plane stability instability of steel beams under bending has gradually become prominent. Usually, a scheme of adding out-of-plane rigid tie rods or knee braces to the steel beam is adopted to enhance the out-of-plane stability of the steel beam, and among them, the scheme of adding knee braces is the most economical and simple.

[0003] In the traditional knee brace practice, the stiffener at the position of the lower flange and web of the original roof steel beam is used as the lower base of the knee brace, and this stiffener is usually welded to the steel beam. On-site reinforcement operations often encounter the requirement of prohibiting open flames inside the factory area, and the construction quality of overhead welding cannot be fully guaranteed. Therefore, a reinforcement method for the knee brace for the out-of-plane stability of the steel beam is needed, which can avoid hot work operations and has a firm and reliable connection. Content of the Utility Model

[0004] The purpose of the utility model is to provide a reinforcement structure for a steel beam knee brace structure for reinforcement, which can avoid hot work welding operations in the factory building, add knee braces through the mechanical connection form of structural adhesive and bolts, can effectively enhance the out-of-plane stability of the steel beam and significantly improve the on-site construction operation efficiency.

[0005] The technical solution adopted by the utility model is: a steel beam knee brace structure for reinforcement, the structure includes a roof steel beam, a roof purlin, a knee brace, a knee brace base, a fixture, and a structural adhesive; at the corresponding position of the roof steel beam, the knee brace base is connected and fixed to the lower flange of the steel beam by using the structural adhesive, and the four corners of the upper steel plate of the knee brace base are respectively fixed to the lower flange of the steel beam by using fixtures. Among them, the roof steel beam and the roof purlin are the original structures of the building.

[0006] Further; the knee brace base is in an overall T-shaped structure form, the width of the upper flange of the T-shaped steel plate is the same as that of the lower flange of the roof steel beam, and stiffeners are respectively welded at both sides of the middle position of the web of the T-shaped steel plate in the factory, and bolt holes are reserved at the corresponding positions below the stiffeners.

[0007] Further; the fixture is in a U-shaped structure form, bolt holes are reserved at the corresponding positions of the two steel plates at the opening of the fixture, the width of the fixture matches that of the knee brace base, and a set of knee brace bases are equipped with four fixtures, which are respectively fixed on both sides of the stiffeners of the upper steel plate of the knee brace base.

[0008] Further; the web at the corresponding position of the roof purlin is drilled by a drilling machine, bolt holes are respectively provided at both ends of the knee brace in the form of an angle steel structure, and the two ends of the knee brace are respectively connected and fixed to the roof purlin and the knee brace base by using bolts.

[0009] Furthermore, both ends of the knee brace are respectively fixed by bolts to the bolt holes of the web of the purlin, and the bolt holes of the stiffeners of the knee brace base are respectively fixed; the included angle between the knee brace and the roof purlin is 45 degrees.

[0010] The advantages of the present utility model are as follows: After improvement, the knee brace base is connected and fixed to the lower flange of the steel beam by using steel bonding adhesive at the corresponding position of the original roof steel beam. After the steel bonding adhesive connection is stable and firm, the four corners of the upper steel plate of the knee brace base are respectively fixed to the lower flange of the steel beam by using clamps. Reserved bolt holes are provided on both the upper and lower sides of the clamp. After the clamp is in place, the clamp is fixed to the lower flange of the steel beam by using bolts.

[0011] In this application, the knee brace base is in an overall T-shaped structure form. The upper flange of the T-shaped steel plate has the same width as the lower flange of the original roof steel beam. Stiffeners are respectively welded at the factory on both sides of the middle position of the web of the T-shaped steel plate, and bolt holes are reserved at the corresponding positions below the stiffeners. The thickness of the steel plate of the knee brace base is selected according to the calculation requirements.

[0012] In this application, the clamp is in a U-shaped structure form. Reserved bolt holes are provided at the corresponding positions of the steel plates on both sides of the opening of the clamp. The width of the clamp matches that of the knee brace base. One set of knee brace base is equipped with four clamps, which are respectively fixed on both sides of the stiffeners of the upper steel plate of the knee brace base.

[0013] In this application, after the knee brace base is stably connected to the lower flange of the roof steel beam, the web at the corresponding position of the roof purlin is drilled on-site by using a drilling machine. Bolt holes are respectively provided at both ends of the knee brace in the form of an angle steel structure, and the two ends of the knee brace are respectively connected and fixed to the roof purlin and the knee brace base by using bolts on-site.

[0014] The connection method of fixing by gluing and using clamps avoids the on-site fire welding operation between the traditional knee brace base and the steel beam during the reinforcement process, improves the efficiency of the construction operation, and at the same time avoids the safety hazards of on-site fire welding inside the factory building. The newly added knee brace can effectively increase the out-of-plane stability of the steel beam and improve the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an overall plan view of a steel beam knee brace structure for reinforcement;

[0016] Figure 2 is an elevation view of a steel beam knee brace structure for reinforcement;

[0017] Figure 3 is an isometric view of a steel beam knee brace structure for reinforcement;

[0018] Figure 4 is an isometric view of the knee brace base structure;

[0019] Figure 5It is an axonometric view of the fixture structure;

[0020] Figure 6 It is a sectional view of a steel beam knee brace structure for reinforcement;

[0021] Among them: roof steel beam 1, roof purlin 2, knee brace 3, knee brace base 4, fixture 5, steel-bonding adhesive 6. Specific implementation manners

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described below in conjunction with the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] Reference Figures 1-6 , a reinforcement structure of a steel beam knee brace structure for reinforcement, including a roof steel beam 1, a roof purlin 2, a knee brace 3, a knee brace base 4, a fixture 5, and a steel-bonding adhesive 6. Among them, the roof steel beam 1 and the roof purlin 2 are the original structures of the building.

[0024] During reinforcement, first, a layer of steel-bonding adhesive is applied to the upper steel plate surface of the T-shaped structure of the knee brace base and fixed at the corresponding position of the steel beam. After the steel-bonding adhesive solidifies, four sets of fixtures respectively use bolts to fix the lower flange of the roof steel beam and the upper surface steel plate of the knee brace base to each other.

[0025] Secondly: Use drilling equipment on-site to drill holes at the corresponding positions of the web of the roof purlin. Holes can be reserved at both ends of the angle steel knee brace at the factory.

[0026] Finally: Both ends of the knee brace are respectively fixed to the bolt holes of the web of the purlin and the bolt holes of the stiffener of the knee brace base by bolts. The included angle between the knee brace and the roof purlin is preferably 45 degrees.

[0027] In the present utility model, only mechanical connection using steel-bonding adhesive and bolts is required. The newly added knee brace can be used as a support point for the out-of-plane stability of the steel beam, improving the out-of-plane stability bearing performance of the steel beam. At the same time, on-site hot work is avoided, effectively improving the construction operation efficiency.

[0028] In summary, in the corresponding positions of the original roof steel beam, the knee brace base is connected and fixed to the lower flange of the steel beam by using steel-bonding adhesive. After the steel-bonding adhesive connection is stable and firm, the four corners of the upper steel plate of the knee brace base are respectively fixed to the lower flange of the steel beam by using fixtures. The two ends of the angle steel knee brace are respectively drilled, and are connected to the lower base and the upper purlin by using bolts, enhancing the out-of-plane stability of the steel beam. The reinforcement method described in the present utility model mainly improves the construction efficiency by reasonably designing the knee brace base and using the connection methods of adhesive bonding and fixture fixing, avoiding the on-site fire welding operation between the traditional knee brace base and the steel beam during the reinforcement process, and at the same time avoiding the safety hazards of in-plant fire welding. The newly added knee brace can effectively increase the out-of-plane stability of the steel beam.

[0029] It should be understood that for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements or changes should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A steel beam corner bracing structure for reinforcement, characterized in that; The structure comprises a roof steel beam (1), a roof purlin (2), a corner brace (3), a corner brace base (4), a clamp (5), and a steel adhesive (6); the corner brace base (4) is connected and fixed to the lower flange of the steel beam at a corresponding position of the roof steel beam (1) by using the steel adhesive (6), and the four corners of the upper steel plate of the corner brace base (4) are respectively fixed to the lower flange of the steel beam by using the clamp (5).

2. A reinforcement steel beam corner bracing structure according to claim 1, characterized in that; The corner support base (4) is in the form of a T-shaped structure as a whole. The upper flange of the T-shaped steel plate has the same width as the lower flange of the roof steel beam (1). Stiffening ribs are welded in the factory on both sides of the middle position of the web of the T-shaped steel plate, and bolt holes are reserved at corresponding positions below the stiffening ribs.

3. A reinforcement steel beam corner bracing structure according to claim 1, characterized in that: The fixture (5) is in a U-shaped structure. Bolt holes are reserved at corresponding positions of the steel plates on both sides of the opening of the fixture (5). The width of the fixture (5) matches the corner support base (4). A set of corner support bases (4) is equipped with four fixtures (5), which are respectively fixed on both sides of the stiffening ribs of the upper steel plate of the corner support base (4).

4. A reinforcement steel beam corner bracing structure according to claim 1, characterized in that: Holes are drilled in the webs at corresponding positions of the roof purlins (2) by means of a drilling machine, bolt holes are respectively provided at both ends of the corner brace (3) in the form of an angle steel structure, and bolts are used to connect and fix the two ends of the corner brace (3) to the roof purlins (2) and the corner brace base (4) respectively.

5. The reinforcement steel beam corner bracing structure according to claim 1, characterized in that: The two ends of the corner brace (3) are respectively fixed by bolts and bolt holes of the purlin web and bolt holes of the corner brace base stiffening rib; the angle between the corner brace (3) and the roof purlin (2) is 45 degrees.

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