Steel beam web rectangular orifice reinforcing component in steel structure building
By installing reinforcing plates and stiffening plates at the rectangular openings in the web of the steel beam, the problems of reduced shear and bending resistance and stress concentration caused by the opening of the rectangular openings were solved, thereby improving the load-bearing capacity and structural safety of the steel beam.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG MINSHENG CONSTR ENG CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-08
AI Technical Summary
Creating rectangular holes in the web of a steel beam will reduce the effective cross-sectional area of the web, decrease its shear and bending resistance, and easily lead to stress concentration and local deformation, affecting the overall performance and safety of the steel beam.
A reinforcement component for rectangular openings in the web of a steel beam is designed. By installing reinforcing plates and stiffening plates, the component is connected to the original web to jointly bear bending moment and shear force. The rectangular opening is reinforced by components such as fixing blocks, stiffening ribs, support plates, and reinforcement parts to limit deformation and improve local stability.
It enhances the load-bearing capacity of steel beams, reduces structural safety hazards caused by openings, lowers the risk of structural failure, and ensures the overall safety of the engineering structure.
Smart Images

Figure CN224213837U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel structure building technology, and in particular relates to a reinforcing component for rectangular holes in the web of steel beams in steel structure buildings. Background Technology
[0002] In steel structure buildings, rectangular openings are made in the web of steel beams to allow pipes or cables to pass through smoothly, avoiding large-scale modifications to the steel structural components. At the same time, it can also ensure the effective use of building space and make the building layout more rational.
[0003] However, opening rectangular holes in the web of steel beams weakens the effective cross-sectional area of the web, reducing its shear and bending resistance. Simultaneously, stress concentration occurs at the edge of the opening, easily leading to localized deformation or even cracking, affecting the overall performance and safety of the steel beam. Therefore, reinforcement measures are needed to compensate for these adverse effects. A reinforcement component for rectangular holes in the web of steel beams in steel structures needs to be designed. This component employs a structure with reinforcement around the rectangular opening. Since the rectangular opening weakens the effective cross-section of the steel beam web, reinforcement increases the cross-sectional area and moment of inertia, enabling the steel beam to withstand greater loads. The structure, through the installation of reinforcing plates and stiffening plates, connects collaboratively with the original web to jointly bear bending moments and shear forces. Strengthening the joints reduces structural safety hazards caused by the openings, lowers the risk of structural failure, and ensures the overall safety of the engineering structure. Utility Model Content
[0004] The purpose of this utility model is to provide a reinforcing component for rectangular openings in the web of steel beams in steel structure buildings. This component enables the steel beam to withstand greater loads. By installing reinforcing plates and stiffening plates, it connects with the original web to jointly bear bending moments and shear forces. The reinforcement of the joints reduces structural safety hazards caused by the openings, lowers the risk of structural failure, and ensures the overall safety of the engineering structure, thereby solving the aforementioned technical problems.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A reinforcing member for rectangular holes in the web of a steel beam in a steel structure building, comprising a main steel, a transverse connecting steel fixedly connected to the right side of the main steel, a stiffening rib plate installed on the front side of the web of the transverse connecting steel, multiple reinforcing plates fixedly connected to the top and bottom of the stiffening rib plate, L-shaped plates fixedly connected to the upper and lower sides and left and right ends of the stiffening rib plate by bolts, the surface of the L-shaped plate fixedly connected to the transverse connecting steel by bolts, support plates fixedly connected to the left and right sides of the stiffening rib plate by bolts, two opposing diagonal bracing plates fixedly connected to the side opposite to the top reinforcing plate, a bottom plate fixedly connected to the top of the transverse connecting steel, the bottom plate being located between the two reinforcing plates on the left side of the bottom, and an inclined plate fixedly connected to the top of the bottom plate.
[0006] Preferably, the top and bottom of the horizontal connecting steel are fixedly connected to fixing blocks by bolts, and the side of the fixing block away from the horizontal connecting steel is fixedly connected to the main steel by bolts.
[0007] Preferably, a corner brace is fixedly connected between the bottom of the stiffening rib and the reinforcing plate on the bottom right side.
[0008] Preferably, a reinforcement member is fixedly connected to the right side of the bottom of the stiffening rib by bolts, and the reinforcement member is located between the two reinforcing plates on the bottom right side.
[0009] Preferably, the top of each of the two diagonal bracing plates is fixedly connected to a mounting plate, and the top of the mounting plate is fixedly connected to a diagonal bracing column. The diagonal bracing column is fixedly connected to the top of the stiffening rib plate and the top of the horizontal connecting steel.
[0010] Preferably, the top and bottom of the stiffening rib are fixedly connected to reinforcing plates, with the top reinforcing plate fixedly connected to the diagonal brace and the bottom reinforcing plate fixedly connected to the corner brace.
[0011] The beneficial effects of this utility model are:
[0012] 1. This utility model reinforces the main steel and transverse connecting steel during connection by fixing blocks. Then, stiffening ribs limit the deformation of the rectangular opening in the web transverse connecting steel, preventing buckling instability under load. Subsequently, reinforcing plates and support plates further stabilize the reinforcing nodes at the rectangular openings in the transverse connecting steel, enabling the steel beam to withstand greater loads. The structure with reinforcing plates and stiffening plates, connected in coordination with the original web, shares the bending moment and shear force. The reinforcement of the nodes reduces structural safety hazards caused by openings, lowers the risk of structural failure, and ensures the overall safety of the engineering structure.
[0013] 2. By setting the reinforcement, the local stability of the transverse connecting steel web plate will decrease after the hole is opened. The reinforcement plays a role in strengthening the web plate, limiting the deformation of the transverse connecting steel web plate, enhancing the local stability of the transverse connecting steel web plate, preventing buckling under load, and increasing the overall stiffness of the transverse connecting steel and reducing the deformation of the transverse connecting steel under load.
[0014] 3. By setting up the corner brace, the corner brace increases the constraint at the opening of the web of the transverse connecting steel, which can effectively limit the local deformation of the web of the transverse connecting steel and prevent buckling instability under load. The corner brace and the stiffening rib work together to improve the deformation resistance of the area, so that the opening part of the transverse connecting steel can maintain good structural performance when bearing load. Attached Figure Description
[0015] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.
[0016] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;
[0017] Figure 2 This is a front view schematic diagram of one embodiment of the present invention;
[0018] Figure 3 This is a plan view of the rectangular hole in the horizontal connecting steel according to an embodiment of the present invention;
[0019] Figure 4 This is a partial three-dimensional schematic diagram of the main steel and transverse connecting steel according to an embodiment of the present invention;
[0020] Figure 5 This is one embodiment of the present utility model. Figure 4 A magnified view of point A in the middle.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Main steel, 2. Horizontal connecting steel, 3. Fixing block, 4. Stiffening rib plate, 5. Reinforcing plate, 6. L-shaped plate, 7. Support plate, 8. Diagonal brace plate, 9. Bottom plate, 10. Inclined plate, 11. Angle brace plate, 12. Reinforcing component, 13. Mounting plate, 14. Diagonal brace column, 15. Reinforcing plate. Detailed Implementation
[0023] In the following description, embodiments of the steel beam web rectangular hole reinforcement component of the present invention will be presented with reference to the accompanying drawings.
[0024] Figure 1-5This invention illustrates a reinforcing member for a rectangular opening in the web of a steel beam in a steel structure building, according to an embodiment of the present invention. It includes a main steel beam 1, with a transverse connecting steel beam 2 fixedly connected to the right side of the main steel beam 1. The top and bottom of the transverse connecting steel beam 2 are both fixedly connected to fixing blocks 3 by bolts. The side of the fixing blocks 3 away from the transverse connecting steel beam 2 is fixedly connected to the main steel beam 1 by bolts. A stiffening rib 4 is installed on the front side of the web of the transverse connecting steel beam 2. Multiple reinforcing plates 5 are fixedly connected to the top and bottom of the stiffening rib 4. L-shaped plates 6 are fixedly connected to the upper and lower sides and left and right ends of the stiffening rib 4 by bolts. The surface of the L-shaped plates 6 is fixedly connected to the transverse connecting steel beam 1 by bolts. The connecting steel 2 is fixedly connected, and the left and right sides of the stiffening rib 4 are both fixedly connected to the support plates 7 by bolts. Two opposing diagonal bracing plates 8 are fixedly connected to the side opposite to the top reinforcing plate 5. The top of the transverse connecting steel 2 is fixedly connected to the bottom plate 9, which is located between the two reinforcing plates 5 on the bottom left. The top of the bottom plate 9 is fixedly connected to the diagonal plate 10. An angled bracing plate 11 is fixedly connected between the bottom of the stiffening rib 4 and the bottom right reinforcing plate 5. By setting the angled bracing plate 11, the angled bracing plate 11 increases the constraint at the opening of the web of the transverse connecting steel 2, which can effectively limit the local movement of the web of the transverse connecting steel 2. To prevent buckling instability under load, the angle brace 11 and stiffening rib 4 work together to improve the deformation resistance of this area, ensuring that the perforated portion of the transverse connecting steel 2 maintains good structural performance even under load. A stiffener 12 is bolted to the right side of the bottom of the stiffening rib 4, located between two reinforcing plates 5 on the bottom right. The stiffener 12 reinforces the web of the transverse connecting steel 2, limiting its deformation and enhancing its structural integrity. The local stability of the web of the transverse connecting steel 2 is reduced after the perforation is made, thus limiting buckling instability under load. The local stability of the plate is improved to prevent buckling under load. The presence of the reinforcement 12 increases the overall stiffness of the transverse connecting steel 2 and reduces the deformation of the transverse connecting steel 2 under load. The top of the two diagonal bracing plates 8 are fixedly connected to the mounting plates 13, and the top of the mounting plates 13 are fixedly connected to the diagonal bracing columns 14. The diagonal bracing columns 14 are fixedly connected to the top of the stiffening rib plate 4 and the top of the transverse connecting steel 2. The top and bottom of the stiffening rib plate 4 are fixedly connected to the reinforcing plates 15. The top reinforcing plate 15 is fixedly connected to the diagonal bracing plate 8, and the bottom reinforcing plate 15 is fixedly connected to the corner bracing plate 11.
[0025] Working Principle: In use, the fixing block 3 reinforces the joint between the main steel 1 and the transverse connecting steel 2 with bolts. Then, stiffening ribs 4 are installed around the rectangular opening in the transverse connecting steel 2. Stress concentration is easily generated at the rectangular opening in the web of the transverse connecting steel 2. The stiffening ribs 4 can change the stress transmission path, disperse stress, reduce stress peaks, and decrease the risk of failure of the transverse connecting steel 2 due to stress concentration, thus improving fatigue resistance. Two support plates 7 are fixed to both sides of the stiffening ribs 4 with bolts, making the connection between the stiffening ribs 4 and the web of the transverse connecting steel 2 more secure. Then, the reinforcement... The reinforcing plate 5 is fixed to the top and bottom of the stiffening rib plate 4. The two diagonal bracing plates 8 are inclined towards each other at the diagonal of the three reinforcing plates 5, making the reinforcement of the stiffening rib plate 4 more stable. The two reinforcing plates 15 support the bottom of the diagonal bracing plates 8, thereby stabilizing the reinforcement support of the mounting plate 13 and the diagonal bracing column 14. Then, the reinforcing member 12 supports the bottom of the stiffening rib plate 4 with bolts, and then the bottom plate 9, the diagonal plate 10 and the corner bracing plate 11 support and reinforce the left side of the bottom of the stiffening rib plate 4. Finally, the reinforcement of the rectangular opening of the web of the horizontal connecting steel 2 is completed, ensuring the overall safety of the engineering structure.
[0026] In summary, the reinforcing member for the rectangular opening in the web of the steel beam in this steel structure building reinforces the main steel 1 and the transverse connecting steel 2 at the connection point using fixing block 3. Then, stiffening ribs 4 limit the deformation of the rectangular opening in the transverse connecting steel 2, preventing buckling instability under load. Furthermore, reinforcing plates 5 and support plates 7 further stabilize the reinforcing node at the rectangular opening in the transverse connecting steel 2, enabling the steel beam to withstand greater loads. The structure, with its reinforcing and stiffening plates, works in conjunction with the original web to share bending moment and shear force. This reinforcement of the joint reduces structural safety hazards caused by the opening, lowers the risk of structural failure, and ensures the overall safety of the engineering structure.
Claims
1. A reinforcing member for rectangular openings in the web of steel beams in steel structure buildings, characterized in that, The structure includes a main steel (1), a transverse connecting steel (2) fixedly connected to the right side of the main steel (1), a stiffening rib (4) installed on the front side of the web of the transverse connecting steel (2), multiple reinforcing plates (5) fixedly connected to the top and bottom of the stiffening rib (4), L-shaped plates (6) fixedly connected to the upper and lower sides and left and right ends of the stiffening rib (4) by bolts, the surface of the L-shaped plate (6) fixedly connected to the transverse connecting steel (2) by bolts, support plates (7) fixedly connected to the left and right sides of the stiffening rib (4) by bolts, two opposing diagonal bracing plates (8) fixedly connected to the side opposite to the top reinforcing plate (5), a bottom plate (9) fixedly connected to the top of the transverse connecting steel (2), the bottom plate (9) located between the two reinforcing plates (5) on the left side of the bottom, and an inclined plate (10) fixedly connected to the top of the bottom plate (9).
2. The steel beam web rectangular hole reinforcement component in steel structure buildings according to claim 1, characterized in that, The top and bottom of the horizontal connecting steel (2) are fixedly connected to fixing blocks (3) by bolts. The side of the fixing block (3) away from the horizontal connecting steel (2) is fixedly connected to the main steel (1) by bolts.
3. The steel beam web rectangular hole reinforcement component in steel structure buildings according to claim 2, characterized in that... An angle brace (11) is fixedly connected between the bottom of the stiffening rib (4) and the reinforcing plate (5) on the bottom right side.
4. The steel beam web rectangular hole reinforcement component in steel structure buildings according to claim 3, characterized in that, The stiffening rib (4) is fixedly connected to a reinforcement member (12) by bolts on the right side of its bottom. The reinforcement member (12) is located between two reinforcing plates (5) on the right side of the bottom.
5. The steel beam web rectangular hole reinforcement component in a steel structure building according to claim 4, characterized in that, The top of each of the two diagonal bracing plates (8) is fixedly connected to a mounting plate (13), and the top of the mounting plate (13) is fixedly connected to a diagonal bracing column (14). The diagonal bracing column (14) is fixedly connected to the top of the stiffening rib plate (4) and the top of the horizontal connecting steel (2).
6. The steel beam web rectangular hole reinforcement component in steel structure buildings according to claim 5, characterized in that, The stiffening rib (4) is fixedly connected to the top and bottom of the reinforcing plate (15). The top reinforcing plate (15) is fixedly connected to the diagonal brace (8), and the bottom reinforcing plate (15) is fixedly connected to the corner brace (11).