I-shaped steel beam fireproof device

Abstract

The utility model relates to an I-shaped steel beam fireproof device. The I-shaped steel beam fireproof device structurally comprises a U-shaped bottom plate, fixing blocks, connecting pieces and side plates. The U-shaped bottom plate is a modular groove-shaped plate formed by pressing an inorganic material, and bolt holes are formed in the side faces of the U-shaped bottom plate and used for connecting the side faces of the U-shaped bottom plate; the fixing blocks are polygonal prisms with bolt holes in the centers and are arranged on the top surfaces of the lower flanges of the I-shaped steel beams, and bolts are connected to the fixing blocks and the side surfaces of the adjacent U-shaped bottom plates in a penetrating manner; and a connecting piece for supporting the side plate is arranged between the fixing block and the U-shaped bottom plate. According to the H-shaped steel beam fireproof plate, the traditional method that holes are punched in the H-shaped steel beam, bolts are connected in a penetrating mode and welding is conducted when the fireproof plate is installed is avoided, the structural integrity of the H-shaped steel beam is protected through the lossless installation mode, the damage risk is reduced, wet construction procedures such as on-site spraying are avoided, and the fireproof construction efficiency of the steel beam is improved.

Description

Technical Field

[0001] The utility model relates to a protective structure for building structural components, in particular to a fire protection device for I-shaped steel beams. Background Art

[0002] In the fields of modern architecture and engineering, as an important part of the load-bearing structure system, the safety and durability of steel structures are directly related to the safety performance and service life of the overall building. However, steel structures have the characteristics of being heat-resistant but not fire-resistant. When a building structure encounters a fire, steel structure components often soften due to high temperature and lose their structural strength, resulting in collapse accidents. Steel structure fire protection has become an important issue affecting the safety of building structures.

[0003] Traditional fire protection methods for I-shaped steel beams usually adopt spraying methods or fireproof board protection. Fireproof coatings are mostly completed by on-site spraying. There are many on-site wet operations, causing certain environmental pollution, and the quality control is greatly affected by humans. Fireproof board protection mostly adopts methods such as drilling holes in I-shaped steel beams and threading bolts, as well as welding connections to install the fireproof board. Although this approach can achieve a certain degree of protection effect, there are many drawbacks. First, the drilling process will damage the structural integrity of the I-shaped steel beam, increasing the risk of stress concentration and crack propagation, and thus shortening the service life of the I-shaped steel beam. Second, the welding connection will cause a certain degree of damage to the anti-corrosion protection of the steel beam, affecting the long-term anti-corrosion performance. In addition, the connection process is complex and mostly completed on-site, resulting in low installation efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fire protection device for I-shaped steel beams to solve the above problems.

[0005] The utility model is realized as follows: A fire protection device for I-shaped steel beams, the structure of which includes a U-shaped bottom plate wrapping the bottom of the I-shaped steel beam and two side plates arranged on the U-shaped bottom plate, and the two side plates are respectively located on the left and right sides of the I-shaped steel beam; the U-shaped bottom plate includes a horizontal bottom plate and U-shaped bottom plate sides extending upward at the left and right ends of the bottom plate. Fixed blocks are arranged on the top surfaces of the lower flanges on both sides of the web of the I-shaped steel beam, and bolts are commonly threaded through the fixed blocks and the adjacent U-shaped bottom plate sides; a connecting member for supporting the side plates is arranged between the fixed blocks and the U-shaped bottom plate sides.

[0006] Further, the connecting member includes a vertical plate arranged between the fixed block and the U-shaped bottom plate side, a horizontal support plate arranged outside the vertical plate, and a baffle arranged at the outer end of the support plate. The vertical plate, the support plate and the baffle on the upper part of the support plate form a card slot for clamping the side plate.

[0007] Further, an angle plate is arranged on the roof to block the outside of the upper end of the side plate.

[0008] Further, the fixing block is a multi-sided prism, and the length of each face from the center is different.

[0009] Further, the fixing block is a pentagonal prism.

[0010] Further, the connecting member is a long connecting member, and the long connecting member has the same length as the U-shaped bottom plate and the side plate.

[0011] Further, the connecting member is a short connecting member, and the length of the short connecting member is less than the lengths of the U-shaped bottom plate and the side plate.

[0012] Further, the lower end of the vertical plate extends to the upper side of the steel beam bottom plate.

[0013] Further, the outer side of the baffle is flush with the outer sides of the side of the U-shaped bottom plate and the outer side of the side plate.

[0014] The utility model wraps the I-shaped steel beam with the U-shaped bottom plate and two side plates to form a relatively enclosed fire protection layer, effectively isolating the direct action of the external environment on the steel beam, and improving the fire resistance, weather resistance and the ability to resist external physical impacts of the I-shaped steel beam. In particular, the card slot design between the side plate and the connecting member is both stable and convenient for installation, enhancing the stability of the overall structure.

[0015] The utility model directly places the fixing block on the steel beam bottom plate and uses bolts to fix the U-shaped bottom plate and the side plate on the fixing block, avoiding the traditional practices of drilling holes and threading bolts on the I-shaped steel beam during the installation of the fireproof board, as well as welding. This non-destructive installation method not only protects the structural integrity of the I-shaped steel beam, reduces the risk of damage, but also avoids the wet operation construction processes such as on-site spraying, improving the construction efficiency of the steel beam fire protection.

[0016] The utility model can be flexibly adjusted according to actual needs by using connecting members of different lengths, is applicable to protection units of different lengths, meets the requirements of different application scenarios, and improves flexibility and adaptability.

[0017] The utility model designs the fixing block in the shape of a multi-sided prism, and the length of each face from the center is different, which can be applicable to I-shaped steel beams of different specifications. This design reduces the need to prepare multiple fixing blocks, improving the construction efficiency and flexibility.

[0018] The installation process of the utility model is relatively simple, without complex drilling and bolting operations. At the same time, the connection between each component is firm and reliable, facilitating subsequent maintenance and replacement work. Description of the Drawings

[0019] Figure 1This is a schematic structural view of the present utility model.

[0020] Figure 2 This is a perspective view of the present utility model.

[0021] Figure 3 Is Figure 2 A schematic structural view from another perspective.

[0022] Figure 4 This is a schematic structural view of the present utility model used on a steel beam with unequal lengths of upper and lower flanges.

[0023] In the figure: 1, I-shaped steel beam; 2, U-shaped bottom plate; 3, side plate; 4, bottom plate; 5, side of U-shaped bottom plate; 6, fixing block; 7, vertical plate; 8, supporting plate; 9, baffle; 10, angle plate; 11, roof; 12, long connecting piece; 13, short connecting piece. Specific embodiments

[0024] As Figures 1 - 3 shown, the present utility model includes a U-shaped bottom plate 2 that wraps the bottom of the I-shaped steel beam 1 and two side plates 3 provided on the U-shaped bottom plate 2. The two side plates 3 are respectively located on the left and right sides of the I-shaped steel beam 1. The U-shaped bottom plate 2 and the side plates 3 have the same length. Through the combination of the U-shaped bottom plate 2 and the two side plates 3, a complete protective cover is formed, which wraps the bottom and both sides of the I-shaped steel beam 1.

[0025] The U-shaped bottom plate 2 is U-shaped. The U-shaped bottom plate 2 includes a horizontally arranged bottom plate 4 and U-shaped bottom plate sides 5 that extend upward at the left and right ends of the bottom plate 4. Fixing blocks 6 are provided on the steel beam bottom plates on both sides of the web of the I-shaped steel beam 1. Corresponding holes are provided in the fixing blocks 6 and the U-shaped bottom plate sides 5, and a fixing pin or bolt is commonly inserted through the fixing block 6 and the adjacent U-shaped bottom plate side 5. The U-shaped bottom plate 2 is fixed to the lower part of the I-shaped steel beam 1 through the fixing block 6 and the bolt. The U-shaped bottom plate is a modular grooved plate pressed from inorganic materials.

[0026] A connecting piece for supporting the side plate 3 is provided between the fixing block 6 and the U-shaped bottom plate side 5. The connecting piece includes a vertical plate 7 provided between the fixing block 6 and the U-shaped bottom plate side 5, a horizontal supporting plate 8 provided outside the vertical plate 7, and a baffle 9 that extends upward at the outer end of the supporting plate 8. The supporting plate 8 is provided in the middle of the vertical plate 7. The vertical plate 7, the supporting plate 8 and the baffle 9 above the supporting plate 8 form a clamping groove for the lower end of the side plate 3. The lower end of the vertical plate 7 extends to the upper side of the bottom plate of the I-shaped steel beam 1 to more stably support the side plate 3.

[0027] There are two types of connecting pieces. One is Figure 2 And Figure 3The long connecting piece 12 on the right side of the [object], the length of the long connecting piece 12 is the same as the lengths of the U-shaped bottom plate 2 and the side plate 3, that is, it spans the entire length of the protection unit. Only one long connecting piece 12 is needed for each protection unit. The long connecting piece 12 not only provides additional support strength but also ensures the stability of the U-shaped bottom plate 2 and the side plate 3 within the entire length range through its length. The other type is Figure 2 and Figure 3 the short connecting pieces 13 on the left side of the [object]. The lengths of the short connecting pieces 13 are short, much less than the lengths of the U-shaped bottom plate 2 and the side plate 3. Two or more short connecting pieces 13 are arranged at intervals in each protection unit. The arrangement of the short connecting pieces 13 is more flexible, suitable for protection units of different lengths, and can be installed at different positions of the protection unit according to needs, especially suitable for the case where a protection unit with a shorter length needs to be installed at the end of the steel beam.

[0028] On the outer side of the lower end of the side plate 3, a notch is provided inward so that the outer side of the baffle 9 of the connecting piece is flush with the outer side of the U-shaped bottom plate side 5 of the U-shaped bottom plate 2 and the outer side of the side plate 3, ensuring the flatness and consistency of the entire protection unit in the horizontal direction.

[0029] A gusset plate 10 blocking the outer side of the upper end of the side plate 3 is provided on the roof. The inner side of the upper end of the side plate 3 contacts the top plate of the I-shaped steel beam 1. Bolts are commonly inserted through the gusset plate 10 and the roof. The gusset plate 10 is a right-angle plate 10 with an included angle of 90°. One side of the gusset plate 10 contacts the roof, and the other side contacts the side plate 3. Bolts are provided only on the side of the gusset plate 10 that contacts the roof, avoiding drilling holes and inserting bolts into the I-shaped steel beam 1.

[0030] The fixing block 6 is a multi-sided prism with a threaded hole in the center. The length from the center to each face is different, so that when it is used for I-shaped steel beams 1 of different specifications, it can be applicable to I-shaped steel beams 1 of different specifications, reducing the need to prepare multiple fixing blocks 6. Specifically, when the fixing block 6 needs to be used for a larger-sized I-shaped steel beam 1, the face farther from the center can be selected to contact the I-shaped steel beam 1, and it can be fixed by bolts or other fasteners. In this way, the fixing block 6 can firmly "hold" the I-shaped steel beam 1 to prevent it from sliding or falling off. On the contrary, if the size of the I-shaped steel beam 1 is small, the face closer to the center can be selected for fixation, and the same stable effect can be achieved. The fixing block 6 in this embodiment is a pentagonal prism, and a suitable multi-sided prism can be selected according to actual needs.

[0031] The fixed block 6 is arranged on the top surface of the lower flange of the I-shaped steel beam 1, without the need to drill holes or pass bolts through the I-shaped steel beam 1. This non-destructive installation method protects the structural integrity of the I-shaped steel beam 1 and avoids problems such as stress concentration and crack propagation that may be caused by drilling holes or passing bolts. At the same time, it reduces the heat transfer path to the I-shaped steel beam 1, which helps to slow down the temperature rise rate of the I-shaped steel beam 1 and improve the fire resistance time of the steel structure.

[0032] As Figure 4 shown, when the upper and lower flanges of the I-shaped steel beam are of different lengths, move the fixed blocks 6 on both sides of the steel beam web outwards so that the fixed blocks 6, the connecting pieces and the side surface 5 of the U-shaped bottom plate are tightly connected, keeping the two side plates 3 vertical. This improves the stability and application range of the protection unit.

[0033] The protection structure of the I-shaped steel beam 1 consists of a number of protection units arranged in sequence along the length of the steel beam, wrapping the I-shaped steel beam 1 to form an effective protective layer. The U-shaped bottom plate 2 and the side plates 3 are made of inorganic heat-insulating materials, which can form a heat-insulating layer during a fire, slow down the temperature rise rate of the steel beam, thereby increasing the fire resistance time of the steel structure and protecting the safety of the overall structure. The bolts or fixed pins, connecting pieces and fixed blocks 6 are also made of heat-insulating materials to reduce the possibility of heat transfer to the steel beam during a fire.

Claims

1. An I-shaped steel beam fire protection device, characterized in that, It includes a U-shaped bottom plate wrapping the bottom of the I-shaped steel beam and two side plates arranged on the U-shaped bottom plate, and the two side plates are respectively located on the left and right sides of the I-shaped steel beam; the U-shaped bottom plate includes a horizontal bottom plate and U-shaped bottom plate sides extending upward at the left and right ends of the bottom plate, and fixing blocks are arranged on the top surfaces of the lower flanges on both sides of the web of the I-shaped steel beam, and bolts are jointly inserted through the fixing blocks and the adjacent U-shaped bottom plate sides; a connecting piece for supporting the side plate is arranged between the fixing block and the U-shaped bottom plate side.

2. The I-shaped steel beam fire protection device according to claim 1, characterized in that, The connecting piece includes a vertical plate arranged between the fixing block and the U-shaped bottom plate side, a horizontal supporting plate arranged outside the vertical plate, and a baffle arranged at the outer end of the supporting plate, and the vertical plate, the supporting plate and the baffle at the upper part of the supporting plate form a clamping groove for the side plate.

3. The I-shaped steel beam fire protection device according to claim 1, characterized in that, An angle plate is arranged on the roof to block the outside of the upper end of the side plate.

4. The I-shaped steel beam fire protection device according to claim 1, characterized in that, The fixing block is a multi-sided prism, and the length of each of its faces from the center is different.

5. The I-shaped steel beam fire protection device according to claim 4, characterized in that, The fixing block is a pentagonal prism.

6. The I-shaped steel beam fire protection device according to claim 1, characterized in that, The connecting piece is a long connecting piece, and the long connecting piece has the same length as the U-shaped bottom plate and the side plate.

7. The I-shaped steel beam fire protection device according to claim 1, characterized in that, The connecting piece is a short connecting piece, and the length of the short connecting piece is less than the length of the U-shaped bottom plate and the side plate.

8. The I-shaped steel beam fire protection device according to claim 2, characterized in that, The lower end of the vertical plate extends to the upper side surface of the steel beam bottom plate.

9. The I-shaped steel beam fire protection device according to claim 2, characterized in that, The outer side surface of the baffle is flush with the outer side surfaces of the U-shaped bottom plate side and the side plate.

Images