Reinforcing member for steel beam

Abstract

The utility model relates to the field of steel structure building construction, in particular to a reinforcing member of a steel beam, which comprises the steel beam and a plurality of sealing plates arranged on the steel beam, and the plurality of sealing plates are arranged to be cavities capable of sealing the abdomen of the steel beam to form a closed reinforcing cavity. At least one sealing plate is provided with a material injection hole communicated with the reinforcing cavity so that the reinforcing cavity can be filled with concrete used for reinforcing the steel beam through the material injection hole, at least one anchoring rib component is further arranged in the reinforcing cavity, and the anchoring rib component is used for connecting the steel beam with the concrete in the reinforcing cavity. Therefore, compared with an existing reinforcing mode that the steel beam needs to be derusted or cut, the overall bearing capacity and rigidity of the steel beam are remarkably improved, and the structural stability requirement under long-term service of the steel beam is better met.

Description

Technical Field

[0001] This utility model relates to the field of steel structure building construction, and specifically to reinforcement components for steel beams. Background Technology

[0002] In structural engineering, steel structures are widely used in factories, bridges, high-rise buildings, and municipal facilities due to their high strength, rapid construction, and large load-bearing capacity. However, steel structural components exposed to the open environment for extended periods often face adverse factors such as wind and sun exposure, rain and snow erosion, air humidity, and pollutants, making them highly susceptible to corrosion, especially in coastal areas, high-humidity regions, or areas with severe industrial air pollution. Corrosion not only reduces the cross-sectional dimensions of the steel but also weakens its load-bearing capacity, affecting the overall structural safety and durability; therefore, timely reinforcement is necessary.

[0003] In existing technologies, conventional reinforcement methods for corroded components mainly include mechanical rust removal or sandblasting to remove the rust layer, expose the fresh metal surface, and then reapply an anti-corrosion coating to restore its protective function. However, this approach has significant drawbacks: on the one hand, the effective cross-section of the original component is further weakened after the rust layer is removed, leading to a decrease in the component's stiffness and strength; on the other hand, this method mainly addresses corrosion prevention and has limited effect on improving the load-bearing capacity of the structure itself, especially when the corrosion is severe or the component has already undergone significant deformation, its effectiveness is not ideal.

[0004] Therefore, there is an urgent need for a reinforcement technology that can effectively improve the load-bearing capacity of the structure while avoiding further damage to the components, so as to meet the safety and durability requirements of steel structures during long-term service. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that steel beams will have reduced hardness and strength after rust removal, as is the case with existing technologies.

[0006] To achieve the above objectives, this utility model provides a steel beam reinforcement component, including a steel beam and a plurality of sealing plates disposed on the steel beam. The plurality of sealing plates are configured to seal the abdominal cavity of the steel beam to form a sealed reinforcement cavity.

[0007] At least one sealing plate has an injection hole communicating with the reinforcement cavity. The reinforcement cavity is filled with concrete for reinforcing the steel beam. The reinforcement cavity also has at least one anchor bar component for connecting the steel beam and the concrete in the reinforcement cavity.

[0008] Optionally, the steel beam includes an I-beam, and the sealing plate is configured to seal against the ends of the flanges on both sides of the I-beam to seal the cavities on both sides of the I-beam.

[0009] Optionally, the reinforcement cavity is provided with a plurality of first fixed reinforcing bars, the two ends of which extend toward the flange and are fixedly connected to the flange, and the plurality of first fixed reinforcing bars are spaced apart along the length of the I-beam.

[0010] Optionally, the sealing plate includes a steel mesh, and the first fixing reinforcing bar can be configured to abut against the steel mesh, with a detachable connection between the steel mesh and the first fixing reinforcing bar.

[0011] Optionally, the reinforced cavity is further provided with a second fixed reinforcing bar that is fixedly connected to the first fixed reinforcing bar, and the second fixed reinforcing bar extends along the length of the steel beam.

[0012] Optionally, multiple reinforcing ribs are provided along the length of the steel beam, which divide the reinforcement cavity into multiple sub-reinforcement cavities. Multiple injection holes are provided on the sealing plate, which correspond to and are connected to the multiple sub-reinforcement cavities.

[0013] Optionally, the anchoring bar component includes a first anchoring bar and a second anchoring bar that are fixedly connected to each other, with one end of the first anchoring bar and the second anchoring bar respectively connected to the inner wall surface of the steel beam.

[0014] Optionally, the extension directions of the first anchor bar and the second anchor bar are perpendicular to each other.

[0015] Optionally, the extension length of either the first anchor bar or the second anchor bar on both sides of the other is equal.

[0016] Optionally, the outer surface of the steel beam is coated with an anti-corrosion coating.

[0017] Through the above technical solution, this utility model sets multiple sealing plates on the side of the steel beam, closing the cavity in its belly to form a sealed reinforced cavity. Concrete is then filled into the reinforced cavity through injection holes on the sealing plates. The concrete is effectively connected to the steel beam through anchoring reinforcement components, constructing a steel-concrete collaborative load-bearing system. Compared with existing reinforcement methods that require rust removal or cutting of the steel beam, this utility model not only significantly improves the overall load-bearing capacity and stiffness of the steel beam, but also better meets its structural stability requirements under long-term service. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the reinforcing component for I-beams according to this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the I-beam of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the reinforcing component used in angle steel according to this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. I-beam; 101. Flange; 2. Sealing plate; 3. Reinforcement cavity; 301. Sub-reinforcement cavity; 4. Injection hole; 5. Anchor bar component; 501. First anchor bar; 502. Second anchor bar; 6. First fixing bar; 7. Second fixing bar; 8. Reinforcing rib; 9. Anti-corrosion coating; 10. Fixing bolt. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0024] refer to Figure 1 The reinforcing component of the steel beam of this utility model includes a steel beam and a plurality of sealing plates 2 disposed on the steel beam. These sealing plates 2 are designed to seal the cavity in the web of the steel beam to form a sealed reinforcing cavity 3. In this utility model, the sealing form of the sealing plates 2 may include the following structural configuration: some sealing plates 2 are disposed at both ends or one end of the exposed steel beam and connected to the end of the steel beam to form an end closure; the remaining sealing plates 2 are disposed in the open area of ​​the web of the steel beam to block the web cavity and cooperate with the end sealing plates 2 to jointly enclose and form a sealed reinforcing cavity 3, thereby achieving effective sealing of the web cavity of the steel beam.

[0025] It should be noted that the "sealing" or "blocking" described in this utility model does not refer to a completely airtight or liquid-tight isolation state. A certain amount of gap is permissible between the sealing plate 2 on the web of the steel beam and the end sealing plate 2, between the sealing plate 2 and the steel beam, or even within the sealing plate 2 itself, as long as the reinforced cavity 3 can meet the requirements for concrete pouring and molding. Furthermore, in practical applications, if both ends of the steel beam are connected to other steel beams via connectors, and the ends are sealed by the adjacent steel beam structure, then the operator only needs to seal the sides of the cavity of the steel beam accordingly to complete the enclosure of the reinforced cavity 3, further simplifying the construction process and improving installation efficiency.

[0026] To facilitate the injection of concrete for reinforcing the steel beam into the reinforcement cavity 3, this invention provides an injection hole 4 communicating with the reinforcement cavity 3 on at least one sealing plate 2. The position of the injection hole 4 can be flexibly determined according to the installation environment of the target steel beam or its connection method with adjacent steel beams. It can be set on different sealing plates 2 or at different positions on the same sealing plate 2, and should be arranged above the sealing plate 2 to facilitate the smooth injection of concrete into the reinforcement cavity 3 during construction, thereby ensuring the smooth progress of the injection process and the reliability of the filling effect.

[0027] Within the reinforced cavity 3, anchoring bar components 5 are also provided to connect the steel beam and the concrete, enhancing the bond and collaborative load-bearing effect between the two. The number of anchoring bar components 5 can be flexibly set according to actual structural requirements, for example, referring to... Figure 1 In this invention, the anchoring bar component 5 is configured in four groups. Of course, the number of anchoring bar components 5 in this invention can also be appropriately adjusted according to the specific steel beam structure to meet the structural performance requirements under different reinforcement scenarios.

[0028] Therefore, this invention provides multiple sealing plates 2 on the sides and exposed ends of the steel beam, thereby closing the cavity in its underside to form a sealed reinforced cavity 3. Concrete is then filled into the reinforced cavity 3 through injection holes 4 on the sealing plates 2. The concrete is effectively connected to the steel beam through anchoring reinforcement components 5, constructing a steel-concrete collaborative load-bearing system. Compared to existing reinforcement methods that require rust removal or cutting of the steel beam, this invention not only significantly improves the overall load-bearing capacity and stiffness of the steel beam but also better meets its structural stability requirements under long-term service.

[0029] In this utility model, reference Figure 1 The steel beam may include an I-beam 1, with the aforementioned sealing plate 2 positioned to seal the ends of the flanges 101 on both sides of the I-beam 1, thereby sealing the cavities on both sides of the I-beam. Furthermore, for the ends of the I-beam 1, construction workers can flexibly choose whether to seal the ends based on their connection relationship with adjacent I-beams 1, to adapt to the needs of different structural connection forms. Of course, the steel beam can also be an angle steel structure; in this case, the arrangement of the sealing plate 2 can refer to... Figure 3 The connection method shown in the embodiment is as follows. To avoid redundancy, the sealing structure of the angle steel will not be described in detail here.

[0030] In some embodiments, reference Figure 1 The sealing plate 2 can be connected to the end of the flange 101 of the I-beam 1 by fixing bolts 10.

[0031] In some embodiments, a plurality of first fixing reinforcing bars 6 may be provided in the reinforcing cavity 3. The two ends of the first fixing reinforcing bars 6 extend toward the flange 101 and are fixedly connected to the flange 101. The plurality of first fixing reinforcing bars 6 are arranged at intervals along the length direction of the I-beam 1 to improve the overall strength of the steel beam.

[0032] The sealing plate 2 in this invention may include a steel mesh structure to help form the outer wall of the reinforced cavity 3. The first fixing reinforcing bar 6 may be positioned on the side away from the web of the I-beam 1 to abut against the steel mesh. For ease of installation and construction, the steel mesh and the first fixing reinforcing bar 6 are detachably connected. The connection method can be binding, snap-fit, or other detachable connection methods, thereby enabling rapid installation and disassembly of the steel mesh and improving construction efficiency and flexibility.

[0033] In some embodiments, the reinforced cavity 3 is further provided with a second fixed reinforcing bar 7 connected to the first fixed reinforcing bar 6. The second fixed reinforcing bar 7 extends along the length of the steel beam, and is used to effectively suppress cracks in the concrete within the reinforced cavity 3 during the hardening process due to excessive span of the steel beam, while enhancing the overall strength of the steel beam. The first fixed reinforcing bar 6 and the second fixed reinforcing bar 7 can be reliably connected by a detachable connection method such as bundling. In addition, the second fixed reinforcing bar 7 can be arranged in layers along the height direction of the steel beam, for example, three layers, or arranged in other appropriate quantities according to actual needs, to further improve structural stability and the crack resistance of the concrete.

[0034] On the other hand, in order to avoid cracks when pouring concrete into the reinforcement cavity 3 as a whole, this utility model can adopt segmented pouring, specifically, selectively pouring concrete at discontinuous positions in the reinforcement cavity 3 along the length of the steel beam.

[0035] In this utility model, reference Figure 2 In this embodiment, the steel beam can be provided with multiple reinforcing ribs 8 along its length to improve its strength. Furthermore, the multiple reinforcing ribs 8 can divide the aforementioned reinforced cavity 3 into multiple sub-reinforced cavities 301 along the length of the steel beam. Correspondingly, the sealing plate 2 has multiple injection holes 4 that are connected to the multiple sub-reinforced cavities 301. Therefore, this invention allows concrete to be poured into all sub-reinforced cavities 301, or into adjacent sub-reinforced cavities 301, to achieve the aforementioned segmented pouring method.

[0036] It should be noted that the second fixed reinforcing bar 7 can also be formed in a segmented structure. That is, one or more segments of the second fixed reinforcing bar 7 can be set in each sub-reinforcement cavity 301 so that the second fixed reinforcing bar 7 can be laid in the entire reinforcement cavity 3. In addition, the width of the reinforcing rib 8 can be smaller than the width of the reinforcement cavity 3 so that there is a gap between the reinforcing rib 8 and the first fixed reinforcing bar 6 that allows the second reinforcing bar to pass through, thereby allowing the second fixed reinforcing bar 7 to be laid in the entire reinforcement cavity 3 in the form of a whole bar.

[0037] In this utility model, reference Figure 1 and Figure 3 The anchoring reinforcement component may include a first anchoring bar 501 and a second anchoring bar 502 that are fixedly connected to each other. One end of the first anchoring bar 501 and the second anchoring bar 502 are respectively connected to the inner wall of the steel beam to effectively connect the steel beam to the concrete poured in the reinforcement cavity 3.

[0038] In some embodiments, the extension directions of the first anchor bar 501 and the second anchor bar 502 are perpendicular to each other, so that they are arranged in a cross-vertical manner. This structure is conducive to uniformly transmitting stress in different directions, improving the overall bond strength and synergistic stress performance between the steel beam and the concrete, thereby further enhancing the stability and crack resistance of the reinforced structure.

[0039] Furthermore, the extension lengths of either the first anchor bar 501 or the second anchor bar 502 on both sides of the other are equal. This symmetrical arrangement not only helps to achieve uniform spatial distribution within the cavity of the steel beam web, but also transmits anchoring force more evenly in multiple directions, improving the bond between the anchor bars and the concrete. This enhances the synergistic stress performance and crack resistance of the steel beam and the reinforced concrete structure, further improving the stability and durability of the reinforced component.

[0040] In this utility model, reference Figure 1 The anchoring bar component 5 can be symmetrically arranged in the reinforcement cavity 3 along the web of the I-beam 1 to further improve the stability of the reinforcement component.

[0041] In some embodiments, the outer surface of the steel beam is coated with an anti-corrosion coating 9 to inhibit corrosion of its surface in open-air environments. For example, see reference... Figure 1 An anti-corrosion coating 9 can be sprayed onto the outer surfaces of both ends of the I-beam 1. It is worth mentioning that the concrete filling the reinforcing cavity 3 not only enhances the structural strength but also covers the exposed area of ​​the steel beam's web, isolating it from external moisture and air, thus preventing further corrosion of the steel beam's web and achieving a dual protective effect while strengthening the structure. Furthermore, the aforementioned measures to prevent concrete cracking in this invention can also indirectly prevent external moisture and air from contacting the steel beam's web.

[0042] Furthermore, the first anchoring bar 501 and the second anchoring bar 502 can be made of steel bars or other suitable materials with good strength, and the specific material can be selected according to the project requirements. At the same time, when the anchoring bar component 5 is set in the sub-reinforcement cavity 301, it can be arranged in sections according to the length of the sub-reinforcement cavity 301 to adapt to the structural characteristics of steel beams of different lengths, ensuring the continuity of the anchoring effect and the overall stability of the reinforced structure.

[0043] In this invention, the aforementioned reinforcing components can be installed after the steel beam has been derusted to reinforce the structure of the corroded steel beam; alternatively, they can be installed before the steel beam shows signs of corrosion to achieve simultaneous structural reinforcement and corrosion protection, thereby isolating the external corrosive media, effectively delaying the corrosion process of the steel beam, and extending its service life.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. To avoid unnecessary repetition, the present invention will not describe various possible combinations separately. However, these simple variations and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A reinforcing component for steel beams, characterized in that, It includes a steel beam and a plurality of sealing plates (2) disposed on the steel beam. The plurality of sealing plates (2) are configured to seal the abdominal cavity of the steel beam to form a sealed reinforced cavity (3). At least one of the sealing plates (2) is provided with an injection hole (4) that communicates with the reinforcement cavity (3). The reinforcement cavity (3) is filled with concrete for reinforcing the steel beam. At least one anchor bar component (5) is also provided in the reinforcement cavity (3). The anchor bar component (5) is used to connect the steel beam with the concrete in the reinforcement cavity (3).

2. The reinforcing member for steel beams according to claim 1, characterized in that, The steel beam includes an I-beam (1), and the sealing plate (2) is configured to seal against the ends of the flanges (101) on both sides of the I-beam (1) to seal the cavities on both sides of the I-beam (1).

3. The reinforcing member for steel beams according to claim 2, characterized in that, The reinforced cavity (3) is provided with a plurality of first fixed reinforcing bars (6). The two ends of the first fixed reinforcing bars (6) extend toward the flange (101) and are fixedly connected to the flange (101). The plurality of first fixed reinforcing bars (6) are spaced apart along the length direction of the I-beam (1).

4. The reinforcing member for the steel beam according to claim 3, characterized in that, The sealing plate (2) includes a steel mesh, and the first fixing reinforcing bar (6) is configured to abut against the steel mesh, and the steel mesh and the first fixing reinforcing bar (6) are detachably connected.

5. The reinforcing member for the steel beam according to claim 3, characterized in that, The reinforced cavity (3) is also provided with a second fixed steel bar (7) connected to the first fixed steel bar (6), and the second fixed steel bar (7) extends along the length direction of the steel beam.

6. The reinforcing member for a steel beam according to claim 1, characterized in that, Multiple reinforcing ribs (8) are provided along the length of the steel beam. The multiple reinforcing ribs (8) divide the reinforcement cavity (3) into multiple sub-reinforcement cavities (301). The sealing plate (2) has multiple injection holes (4) that correspond to and communicate with the multiple sub-reinforcement cavities (301).

7. The reinforcing member for a steel beam according to claim 1, characterized in that, The anchoring bar component (5) includes a first anchoring bar (501) and a second anchoring bar (502) that are fixedly connected to each other. One end of the first anchoring bar (501) and the second anchoring bar (502) are respectively connected to the inner wall of the steel beam.

8. The reinforcing member for a steel beam according to claim 7, characterized in that, The extension directions of the first anchor bar (501) and the second anchor bar (502) are perpendicular to each other.

9. The reinforcing member for a steel beam according to claim 8, characterized in that, The extension lengths of either the first anchor bar (501) or the second anchor bar (502) on both sides of the other are equal.

10. The reinforcing member for a steel beam according to claim 1, characterized in that, The outer surface of the steel beam is coated with an anti-corrosion coating (9).

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