Cold-formed steel composite wall panel with replaceable impact protection

Abstract

The present application relates to a cold-formed steel composite wall with replaceable impact protection device, comprising: a cold-formed steel composite wall, an impact protection bottom plate system and an impact protection panel system. On the outside of the cold-formed steel composite wall, the impact protection device is formed by the impact protection bottom plate system and the impact protection panel system, which plays a role in isolating and weakening the impact through a honeycomb filling core and a crimped grid. The crimped grid breaks and destroys the impact energy through a sacrificial connection structure, reducing the impact of the cold-formed steel composite wall. In addition, the high elasticity of the crimped material and the invisible length of the crimped ring fully convert the impact energy into elastic potential energy, thereby protecting the cold-formed steel composite wall and improving the safety of the cold-formed steel composite wall structure system, reducing the disaster loss of impact accidents; the impact protection device can be replaced to continue to protect the cold-formed steel composite wall structure system at a lower cost.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of engineering structure protection, and particularly relates to a cold-bending steel composite wall panel with replaceable impact protection device. BACKGROUND

[0002] Most of the rural areas in China are located in mountainous and hilly areas, and various geological disasters such as mudslides, rockfalls, landslides and the like occur frequently. Cold-bending steel composite wall panel structure system, as a typical representative of new green prefabricated farmhouses, is built in large quantities in the construction of new rural areas. The cold-bending steel composite wall panel is a new green prefabricated wall panel composed of a cold-bending steel dragon frame, internal filling of light slurry and an outer decorative layer. The impact resistance of the cold-bending steel composite wall panel is low, and it is difficult to resist geological disasters such as mudslides, rockfalls and landslides. As a result, the impact damage to the house structure is serious, the economic loss caused by disasters is large, and the structure is difficult to repair after the disaster.

[0003] At present, in terms of wall body impact resistance, walls with superior impact resistance are mainly used as blast walls and civil defense projects, such as steel plate-concrete composite walls and reinforced concrete walls. However, such walls are usually thick, complex to manufacture and high in cost. Other methods for improving the impact resistance of structures usually involve coating a layer of fiber reinforced material on the surface of the structure or reinforcing the structure itself, but the impact resistance of the structure is only improved to a limited extent, and the structure cannot be isolated from the impact effect, resulting in impact damage to the structure. After impact damage, the structure needs to be replaced and repaired, which is high in maintenance cost and has great safety hazards. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a cold-bending steel composite wall panel with replaceable impact protection device.

[0005] The cold-bending steel composite wall panel with replaceable impact protection device comprises a cold-bending steel composite wall panel, an impact protection bottom plate system and an impact protection panel system.

[0006] The impact protection bottom plate system comprises an impact protection bottom plate. The impact protection bottom plate has an open box-like structure. The back plate surface of the impact protection bottom plate is fixed to the surface of the cold-bending steel composite wall panel by a pre-buried screw rod. The four walls on the inner side of the impact protection bottom plate are each provided with a strip-shaped rubber block. The area surrounded by the strip-shaped rubber blocks is filled with a honeycomb structure.

[0007] The impact protection panel system comprises an impact protection panel. The impact protection panel is provided with a folded edge around the panel, forming a cover-like structure matching the impact protection bottom plate. The inner side of the impact protection panel is provided with a crimped grid. The folded edge of the impact protection panel is sleeved on the open end of the impact protection bottom plate and is fixed by a connecting screw.

[0008] As preferred, the coiled mesh comprises a coiled strip, the coiled strip comprises a plurality of curved loop structures, the overlapping portions of each curved loop structure are temporarily fixed by bonding or welding, and the overlapping portions between the coiled strips are also temporarily fixed by bonding or welding.

[0009] As preferred, the strip-shaped rubber block comprises a first strip-shaped rubber block and a second strip-shaped rubber block, the first strip-shaped rubber block is arranged on the vertical inner wall of the impact protection base plate, and the second strip-shaped rubber block is arranged on the horizontal inner wall of the impact protection base plate; grooves are formed in the first strip-shaped rubber block and the second strip-shaped rubber block respectively corresponding to the embedded screw rods.

[0010] As preferred, the cold-formed steel composite wall plate is provided with a left side column and a right side column on both sides respectively, a plurality of C-shaped steels are arranged in the cold-formed steel composite wall plate between the left side column and the right side column, and the cold-formed steel composite wall plate is filled with light slurry.

[0011] As preferred, the left side column is provided with a convex structure, the right side column is provided with a concave structure, and adjacent cold-formed steel composite wall plates are spliced with each other through the left side column and the right side column to form a complete wall foundation.

[0012] As preferred, each honeycomb structure is filled with a honeycomb filling core to form a honeycomb sandwich structure, and the thickness of the honeycomb filling core is equal to that of the honeycomb structure.

[0013] The construction method of the cold-formed steel composite wall plate with replaceable impact protection device comprises the following steps:

[0014] Step one, manufacturing the cold-formed steel composite wall plate, and embedding a plurality of embedded screw rods around the cold-formed steel composite wall plate;

[0015] Step two, pasting the honeycomb structure on the inner side of the back plate of the impact protection base plate, penetrating the embedded screw rods through the back plate of the impact protection base plate and fixing them through nuts, and fixing the impact protection base plate on the cold-formed steel composite wall plate;

[0016] Step three, pasting the strip-shaped rubber block on the inner wall around the honeycomb structure;

[0017] Step four, pasting the coiled mesh on the inner side of the impact protection panel, covering the impact protection panel system on the opening end of the impact protection base plate, and fixedly connecting the folded edge of the impact protection panel and the impact protection base plate through connecting screws.

[0018] As preferred, when one side of the impact protection panel system is impacted, the honeycomb structure is extruded, the coiled mesh is stretched, and the impact force is buffered.

[0019] As a preferred method, after the impact protection panel system is damaged, first remove the connecting screws and remove the impact protection panel system from the open end of the impact protection base plate. Then remove the strip rubber to expose the embedded screws and nuts. After removing the nuts, remove the impact protection base plate system from the cold-formed steel composite wall panel. Then repeat steps two to four to install a new impact protection base plate system and impact protection panel system.

[0020] The beneficial effects of this invention are:

[0021] 1) This invention forms an impact protection device on the outside of the cold-formed steel composite wall panel through an impact protection base plate system and an impact protection panel system. The honeycomb filling core and the curled mesh isolate and weaken the impact. The curled mesh consumes the impact energy through the fracture failure of the sacrificial connection structure, reducing the impact on the cold-formed steel composite wall panel. It also utilizes the high elasticity of the coiled material and the invisible length of the coiled strip to fully convert the impact energy into elastic potential energy and store the impact energy, thereby protecting the cold-formed steel composite wall panel and improving the safety of the cold-formed steel composite wall panel structural system. It can significantly reduce the damage to the cold-formed steel composite wall panel caused by geological disasters such as debris flows, rockfalls, and landslides, and reduce the disaster losses caused by impact accidents.

[0022] 2) The impact protection device is fixed on the pre-embedded screw of the cold-formed steel composite wall panel, which has convenient disassembly and replacement function. If the impact protection device is severely damaged but the cold-formed steel composite wall panel is well protected, the impact protection device can be replaced to continue to protect the cold-formed steel composite wall panel and continue to protect the cold-formed steel composite wall panel structure system at a lower cost.

[0023] 3) By forming a honeycomb sandwich structure through honeycomb structure and honeycomb filling core, the impact resistance of the honeycomb structure can be improved, while the amount of honeycomb structure used can be reduced, thereby reducing the manufacturing cost of impact protection devices. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure of a cold-formed steel composite wall panel with replaceable impact protection device;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 This is a schematic diagram of a cold-formed steel composite wall panel.

[0028] Figure 5 Schematic diagram of impact protection base plate system;

[0029] Figure 6Cross-sectional view of the impact protection base plate system;

[0030] Figure 7 This is a schematic diagram of the first strip-shaped rubber block;

[0031] Figure 8 This is a schematic diagram of the second strip-shaped rubber block;

[0032] Figure 9 Schematic diagram of impact protection panel system;

[0033] Figure 10 This is a schematic diagram of a curled mesh.

[0034] Figure 11 This is a schematic diagram of the roll strip.

[0035] Explanation of reference numerals in the attached drawings: 1. Cold-formed steel composite wall panel; 2. Impact protection base plate system; 3. Impact protection panel system; 4. Connecting screw; 5. Left column; 6. C-shaped steel; 7. Right column; 8. Lightweight mortar; 9. Decorative surface layer; 10. Embedded screw; 11. Nut; 12. Impact protection base plate; 13. Honeycomb filling core; 24. Honeycomb structure; 25. First strip rubber block; 26. Second strip rubber block; 37. Impact protection panel; 38. Curved mesh; 39. Rolled strip. Detailed Implementation

[0036] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0037] Example 1

[0038] As one example, such as Figures 1 to 11 As shown, this cold-formed steel composite wall panel with replaceable impact protection device includes: cold-formed steel composite wall panel 1, impact protection base plate system 2 and impact protection panel system 3; the impact protection base plate system 2 and the impact protection panel system 3 form an impact protection device.

[0039] like Figure 4 As shown, several pre-embedded screws 15 are pre-embedded around the perimeter of the cold-formed steel composite wall panel 1 for fixing the impact protection base plate system 2.

[0040] like Figure 5As shown, the impact protection base plate system 2 includes an impact protection base plate 20 and an impact-resistant unit. The impact-resistant unit includes a honeycomb filling core 21, a honeycomb structure 22, and strip-shaped rubber blocks. The impact protection base plate 20 has an open, flat box-shaped structure. Holes corresponding to the pre-embedded screws 15 are opened around the back plate surface of the impact protection base plate 20, making it easy to directly insert the impact protection base plate 20 into the pre-embedded screws 15. The impact protection base plate 20 is fixed to the surface of the cold-formed steel composite wall panel 1 by the pre-embedded screws 15, and the pre-embedded screws 15 are also fixed inside the impact protection base plate 20 by nuts 16.

[0041] like Figure 7 and Figure 8 As shown, strip-shaped rubber blocks are attached to the four inner walls around the back plate of the impact protection base plate 20. The strip-shaped rubber blocks include a first strip-shaped rubber block 23 and a second strip-shaped rubber block 24. The first strip-shaped rubber block 23 is located on the vertical inner walls on both sides of the impact protection base plate 20, and the second strip-shaped rubber block 24 is located on the horizontal inner walls on both sides of the impact protection base plate 20. The first strip-shaped rubber block 23 and the second strip-shaped rubber block 24 are respectively provided with grooves corresponding to the pre-embedded screws 15, so that the first strip-shaped rubber block 23 and the second strip-shaped rubber block 24 can be installed flat on the inner wall of the impact protection base plate 20.

[0042] like Figure 6 As shown, the area enclosed by the strip-shaped rubber blocks is filled with honeycomb structures 22, which are tightly connected to each other. Each honeycomb structure 22 is filled with a honeycomb core 21. The honeycomb structure 22 can be made of metal, polymer, or composite materials. Its structural dimensions must ensure impact strength, and it possesses excellent impact energy absorption characteristics. Under out-of-plane impact loads, it undergoes uniform elastoplastic deformation, thereby effectively absorbing impact energy. The honeycomb core 21 is made of rubber, with its hexagonal dimensions slightly smaller than those of the honeycomb structure 22, but its height remains the same, allowing the honeycomb core 21 to be placed within the honeycomb structure 22. Rubber has a deformation capacity of 20%-50%, exhibiting excellent impact resistance. The honeycomb core 21 enhances the impact resistance of the honeycomb structure 22 and, while ensuring impact strength, allows for a slight increase in the hexagonal dimensions of the honeycomb structure 22, reducing the amount of honeycomb structure 22 used and lowering the manufacturing cost of the impact protection device.

[0043] A certain gap is left between the edge of the honeycomb structure 22 and the edge of the impact protection base plate 20 to meet the operating space requirements for the bolt connection of the pre-embedded screw 15. Subsequently, the honeycomb structure 22 is covered and compressed to a certain extent by the first strip rubber block 23 and the second strip rubber block 24, filling the gap between the impact protection base plate 20 and the honeycomb structure 22, so that the impact protection device has uniform impact resistance and avoids the appearance of weak impact points.

[0044] like Figure 2 , Figures 9 to 11 As shown, the impact protection panel system 3 includes an impact protection panel 30, made of metal, polymer, or composite material. The impact protection panel 30 has folded edges around its perimeter, forming a cover-like structure that matches the impact protection base plate 20. The folded edges of the impact protection panel 30 fit over the open end of the impact protection base plate 20 and are secured with connecting screws 4. The impact protection panel 30 is slightly larger than the impact protection base plate 20, allowing it to cover and enclose the box-type impact protection base plate.

[0045] A curled mesh 31 is provided on the side where the impact protection panel 30 and the honeycomb filling core 21 are attached. The curled mesh 31 includes strips 32 arranged in a grid pattern. The material of the strips 32 must have high elasticity to convert impact potential energy into elastic potential energy. The curled mesh 31 can be made by printing the strips 32 in a grid pattern on the impact protection panel 30 using 3D printing technology. The overlapping parts of the annular strips 32 must be tightly joined as a sacrificial connection structure. Alternatively, straight strips can be bent into shape, and their annular overlapping parts are connected by bonding or welding. The manufactured strips 32 are arranged in a grid pattern, and the strips 32 are bonded to each other at the grid intersections. At the same time, the strips 32 are bonded or welded to the impact protection panel at certain intervals.

[0046] Example 2

[0047] As another embodiment, this second embodiment proposes a more specific cold-formed steel composite wall panel with a replaceable impact protection device based on the first embodiment.

[0048] The side of the cold-formed steel composite wall panel 1 away from the impact protection base plate system 2 and the impact protection panel system 3 is provided with a decorative surface layer 14, which is made of mortar or decorative board.

[0049] The cold-formed steel composite wall panel 1 has a left column 10 and a right column 12 on both sides. Several C-shaped steels 11 are installed inside the cold-formed steel composite wall panel 1 between the left column 10 and the right column 12. The cold-formed steel composite wall panel 1 is filled with lightweight slurry 13. One end of the pre-embedded screw 15 is inserted into the cold-formed steel composite wall panel 1 and cast together with the lightweight slurry 13. The other end extends out of the cold-formed steel composite wall panel 1 to facilitate the installation of the impact protection base plate system 2.

[0050] In this embodiment, the left column 10 has a protruding structure and the right column 12 has a recessed structure. The two can be spliced ​​together. Adjacent cold-formed steel composite wall panels 1 are spliced ​​together by the left column 10 and the right column 12 to form a complete wall foundation.

[0051] Correspondingly, the size of the impact protection device is matched with that of a single cold-formed steel composite wall panel 1. If the impact protection device is severely damaged by an impact while the cold-formed steel composite wall panel 1 is basically intact, the impact protection device can be easily disassembled and replaced to continue to protect the structure of the cold-formed steel composite wall panel 1, reduce economic losses from disasters, and improve the impact resistance of the building.

[0052] It should be noted that the parts in this embodiment that are the same as or similar to those in Embodiment 1 can be referred to each other, and will not be repeated in this application.

[0053] Example 3

[0054] As another embodiment, this third embodiment, based on embodiments one and two, proposes a construction method for this cold-formed steel composite wall panel with a replaceable impact protection device, including the following steps:

[0055] Step 1: Fabricate cold-formed steel composite wall panel 1, and embed several pre-embedded screws 15 perpendicular to the wall surface around the cold-formed steel composite wall panel 1, and pour one end of them into the lightweight slurry 13.

[0056] Step 2: Attach honeycomb structure 22 to the inner side of the back plate of the impact protection base plate 20, and attach honeycomb filling core 21 to each honeycomb structure 22 to form a honeycomb sandwich structure. Insert the pre-embedded screw 15 through the back plate of the impact protection base plate 20 and fix it with the nut 16 to fix the impact protection base plate 20 to the cold-formed steel composite wall panel 1.

[0057] Step 3: Around the honeycomb structure 22, attach strip-shaped rubber blocks to the inner walls of the impact protection base plate 20; the grooves of the strip-shaped rubber blocks are just enough to leave space for the pre-embedded screws 15 and nuts 16;

[0058] Step 4: Attach the curled mesh 31 to the inside of the impact protection panel 30, cover the opening end of the impact protection base plate 20 with the impact protection panel system 3, and fix the folded edge of the impact protection panel 30 and the impact protection base plate 20 with the connecting screws 4.

[0059] When one side of the impact protection panel system 3 is impacted, the impact protection panel 30 deforms. The overlapping annular portion of the coiled strips 32 acts as a sacrificial connection structure, consuming impact energy through fracture. Simultaneously, the hidden length of the annular coiled strips 32 is released, allowing for further elastoplastic deformation to store and dissipate impact energy. The honeycomb structure 22 and the honeycomb filling core 21 are compressed, providing space for the stretching of the coiled mesh 31 and the deformation of the impact protection panel system 3, buffering the impact force and ensuring that the deformation is not transmitted to the cold-formed steel composite wall panel 1 and causes damage.

[0060] Example 4

[0061] As another embodiment, this embodiment four proposes a more specific construction method for cold-formed steel composite wall panels with replaceable impact protection devices based on embodiment three.

[0062] When the impact protection panel system 3 is damaged, first remove the connecting screws 4, remove the impact protection panel system 3 from the open end of the impact protection base plate 20, then remove the strip rubber to expose the embedded screw 15 and nut 16. After removing the nut 16, remove the impact protection base plate system 2 from the cold-formed steel composite wall panel 1; the disassembly of the impact protection device can then be completed.

[0063] Then repeat steps two through four to install the new impact protection base plate system 2 and impact protection panel system 3 to complete the replacement of the impact protection device.

[0064] It should be noted that the parts in this embodiment that are the same as or similar to those in Embodiment 3 can be referred to each other, and will not be repeated in this application.

[0065] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

Claims

1. A cold-formed steel composite wall panel with a replaceable impact protection device, characterized in that, include: Cold-formed steel composite wall panels, impact protection base plate systems, and impact protection panel systems; The impact protection base plate system includes an impact protection base plate, which has an open, flat box-shaped structure. The back plate of the impact protection base plate is fixed to the surface of the cold-formed steel composite wall panel by pre-embedded screws. The four inner walls of the impact protection base plate are provided with strip rubber blocks, and the area enclosed by the strip rubber blocks is filled with a honeycomb structure. The impact protection panel system includes an impact protection panel with folded edges around its perimeter to form a cover-like structure that matches the impact protection base plate. The inside of the impact protection panel has a rolled mesh. The folded edges of the impact protection panel fit over the open end of the impact protection base plate and are fixed by connecting screws. The curled mesh includes a roll, and the roll includes several bent loop structures. The overlapping parts of each bent loop structure are temporarily fixed by bonding or welding. The overlapping parts between the rolls are also temporarily fixed by bonding or welding. The roll material is a highly elastic material. Each honeycomb structure is filled with a honeycomb core, forming a honeycomb sandwich structure, with the honeycomb core and the honeycomb structure having the same thickness.

2. The cold-formed steel composite wall panel with replaceable impact protection device according to claim 1, characterized in that, The strip rubber block includes a first strip rubber block and a second strip rubber block. The first strip rubber block is located on the vertical inner wall of both sides of the impact protection base plate, and the second strip rubber block is located on the horizontal inner wall of both sides of the impact protection base plate. Grooves are respectively provided on the first strip rubber block and the second strip rubber block to correspond to the pre-embedded screw.

3. The cold-formed steel composite wall panel with replaceable impact protection device according to claim 1, characterized in that, The cold-formed steel composite wall panel has left and right columns on both sides. Several C-shaped steels are installed inside the cold-formed steel composite wall panel between the left and right columns. The cold-formed steel composite wall panel is filled with lightweight slurry.

4. The cold-formed steel composite wall panel with replaceable impact protection device according to claim 3, characterized in that, The left column has a protruding structure, and the right column has a recessed structure. Adjacent cold-formed steel composite wall panels are spliced ​​together by the left and right columns to form a complete wall foundation.

5. The construction method of the cold-formed steel composite wall panel with replaceable impact protection device as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Step 1: Fabricate cold-formed steel composite wall panels and pre-embed several pre-embedded screws around the perimeter of the cold-formed steel composite wall panels; Step 2: Attach a honeycomb structure to the inside of the back plate of the impact protection base plate, insert the pre-embedded screws through the back plate of the impact protection base plate and fix them with nuts, and fix the impact protection base plate to the cold-formed steel composite wall panel. Step 3: Around the honeycomb structure, attach strip-shaped rubber blocks to the inner walls of the impact protection base plate. Step 4: Attach the curled mesh to the inside of the impact protection panel, cover the opening of the impact protection base plate with the impact protection panel system, and fix the folded edge of the impact protection panel to the impact protection base plate with connecting screws.

6. The construction method of the cold-formed steel composite wall panel with replaceable impact protection device according to claim 5, characterized in that, When one side of the impact protection panel system is impacted, the honeycomb structure is compressed, and the curled mesh is stretched, thus buffering the impact force.

7. The construction method of the cold-formed steel composite wall panel with replaceable impact protection device according to claim 5, characterized in that, After the impact protection panel system is damaged, first remove the connecting screws and remove the impact protection panel system from the open end of the impact protection base plate. Then remove the strip rubber to expose the embedded screws and nuts. After removing the nuts, remove the impact protection base plate system from the cold-formed steel composite wall panel. Then repeat steps two to four to install a new impact protection base plate system and impact protection panel system.

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