Structural column steel auxiliary reinforcing assembly

Abstract

The utility model discloses a structure column steel auxiliary reinforcing assembly, which comprises: a clamping piece (1), the clamping piece (1) is arranged on any opposite two sides of a structure column (5) oppositely, a connecting ring (2) is connected to the inner side wall of the two ends of each clamping piece (1) respectively, a pull connecting piece (3) is adjustably connected between the opposite two connecting rings (2) respectively, and the pull connecting piece (3) is located on the outside of the structure column (5), thereby forming a frame type structure column steel auxiliary reinforcing assembly with an internal hollow. The utility model is simple in structure, novel and reasonable in design. The "closed loop constraint" formed by the clamping piece and the pull connecting piece can effectively limit the lateral displacement and shear deformation of the structure column, especially under the horizontal action of earthquake, wind load and the like, the development of plastic hinge of the column can be reduced, and the ductility and energy dissipation capacity of the structure can be improved.

Description

Technical Field

[0001] This utility model relates to a reinforcement component, specifically a steel-clad structural column auxiliary component.

[0002] The reinforcement components belong to the field of building construction safety reinforcement and protection technology. Background Technology

[0003] Generally speaking, in the current structural reinforcement design of building engineering, steel wrapping is often used to reinforce structural columns. During construction, due to factors such as uneven surface of structural columns and operational difficulties, the steel wrapping of structural columns is often not straight and not tightly attached, resulting in quality defects such as rework. This has the disadvantages of large labor waste and poor forming quality.

[0004] In building construction, steel-clad reinforcement, which involves wrapping structural columns with steel plates and fixing them with structural adhesive or chemical anchors, is a commonly used reinforcement technique to increase the column's load-bearing capacity. However, due to factors such as material properties, construction techniques, and environmental conditions, it still has many drawbacks and shortcomings. Specifically, the following technical defects exist during the construction process:

[0005] On the one hand, the original column surface treatment requirements are stringent, requiring grinding, removal of laitance, and removal of rust from the concrete surface of the column to ensure that the surface roughness meets the bonding requirements, usually exposing fresh aggregate. If the treatment is not thorough, the bonding strength between the structural adhesive and the concrete will decrease significantly, and "hollowing and peeling" will easily occur later, which will reduce the integrity of the steel plate and make it prone to breakage under loads such as earthquakes, resulting in the steel plate and concrete failing to work together.

[0006] On the other hand, internal defects are difficult to detect. The bonding condition between the steel plate and the concrete, such as hollowness, peeling, aging of the adhesive layer, and corrosion of the steel, are all covered by the steel plate, making inspection costly and complicated. If problems such as corrosion or adhesive layer failure are found, the outer decoration needs to be removed, the steel plate needs to be peeled off and reconstructed, which has a significant impact on the normal use of the building and has a long maintenance cycle and high cost.

[0007] Another issue is that construction cannot be carried out in areas with limited space. If there are dense pipelines, walls or other obstacles around the column, the operating space for hoisting, welding and bonding of steel plates cannot be met. Usually, an operating distance of 30 to 50 cm needs to be reserved on one side, so steel reinforcement cannot be used. In short, it is often very inconvenient.

[0008] Therefore, the key to solving the above-mentioned technical problems lies in developing a structural column steel-clad auxiliary reinforcement component with high safety, high practicality, and high reinforcement reliability. Summary of the Invention

[0009] In view of the many defects and deficiencies in the above background art, the present utility model improves and innovates the same, and aims to provide an auxiliary steel-clad reinforcement assembly for structural columns which has simple structure, novel and reasonable design, can be recycled and reused, is convenient to assemble and disassemble, can realize standardized processing, fabrication and production, has strong applicability and generality in actual operation, effectively solves the problems of low working efficiency, poor verticality of steel cladding, poor molding quality and the like existing in the construction process of steel-clad reinforcement of structural columns, and has obvious innovation, quality advantages and economic advantages.

[0010] In order to solve the above problems and achieve the above object of the invention, the auxiliary steel-clad reinforcement assembly for structural columns of the present utility model is implemented by adopting the following design structure and the following technical solutions:

[0011] An auxiliary steel-clad reinforcement assembly for structural columns, comprising:

[0012] clamping members, the clamping members are arranged opposite to each other on any two opposite sides of the structural column:

[0013] connecting rings, the connecting rings are respectively connected to the inner side walls of the two ends of each clamping member;

[0014] tie pieces, the tie pieces are respectively adjustably connected between two opposite connecting rings, and the tie pieces are located at the outer side of the structural column, forming a frame-type auxiliary steel-clad reinforcement assembly for structural columns with a hollow interior.

[0015] Preferably, the clamping member is composed of an upper clamping plate and a lower clamping plate connected to the upper clamping plate, wherein the upper clamping plate and the lower clamping plate mutually form a plate-shaped member with a T-shaped cross section.

[0016] Preferably, both the upper clamping plate and the lower clamping plate are L-shaped angle steels.

[0017] Preferably, the bottom surface of the upper clamping plate and the top surface of the lower clamping plate are connected into an integrally formed structure by full welding.

[0018] Preferably, the connecting ring is generally in an "Ω" shape, a "几" shape or an "annular" structure.

[0019] Preferably, the connecting rings are symmetrically and fixedly connected to the inner side wall of the clamping members, and the two connecting rings are arranged coaxially.

[0020] Preferably, the tie member is a closed turnbuckle, an open turnbuckle or a marine turnbuckle.

[0021] Preferably, the tie member is a CC-type open rigging turnbuckle with both ends symmetrically arranged in a hook shape;

[0022] Alternatively, the rigging component is a UU-shaped open rigging spiral buckle with symmetrical U-shaped openings at both ends; wherein, a through hole is provided vertically through the open end of the UU-shaped open rigging spiral buckle, and an anti-loosening limiting locking component is detachably installed on the through hole.

[0023] Preferably, the steel-clad auxiliary reinforcement components for the frame structure columns are installed as a separate set for use.

[0024] Alternatively, two sets of the steel-clad auxiliary reinforcement components for the frame structure columns can be used, arranged in a crisscross pattern.

[0025] Preferably, an injection molding layer, a rust-proof layer, a waterproof layer, and a warning layer are sequentially provided from the inside to the outside on the outer surfaces of the clamping member, the connecting ring, and the tie member, and the warning layer is coated with fluorescent powder.

[0026] The working principle is as follows: Before using the steel-clad auxiliary reinforcement component for the structural column of the above-mentioned design structure, the already manufactured auxiliary reinforcement component needs to be transported to the designated construction location by appropriate handling equipment or directly by manual labor for installation as a backup.

[0027] When in use, the operator only needs to select a reasonable number of auxiliary reinforcement components of this utility model according to the specific reinforcement construction required for the structural column (5), and then install them.

[0028] During installation, one or two operators usually need to cooperate to place the two pre-prepared clamping parts (1) on opposite sides of the structural column (5). Then, two pre-prepared tie parts (3) are adjusted to connect between the two opposite connecting rings (2), and the tie parts (3) are located on the outside of the structural column (5). The two tie parts (3) and the two clamping parts (1) are adjusted to make their clamping connection more stable and reliable, thus forming a hollow frame-type structural column steel-clad auxiliary reinforcement component. The structural column (5) is reinforced by the hollow frame-type structural column steel-clad auxiliary reinforcement component. Multiple reinforcement components of this utility model are installed on the same structural column (5) from top to bottom or from bottom to top in sequence at equal or unequal intervals, thereby completing the auxiliary reinforcement of the structural column (5). After the reinforcement is reliable, the subsequent concrete (53) of the structural column can be poured.

[0029] During the pouring process, the operator only needs to pour the structural column concrete (53) from top to bottom into the cavity of the reinforced structural column formwork (52), and vibrate it while pouring to make it dense.

[0030] Finally, as time goes by, when all the structural column concrete (53) is poured and cured to meet the demolding conditions, the operator only needs to remove the auxiliary reinforcement components of this utility model. When removing them, the operator only needs to loosen one end of the tie member (3) and remove one end of the tie member (3) from one of the clamping members (1). Then, the other end of the tie member (3) is removed from the other clamping member (1) to separate it from the clamping member (1). According to this method, the removal of this utility model is completed. After removal, the operator can clean and repair each part of this utility model and then transport it to the designated tool storage warehouse for storage by manual labor or corresponding handling equipment for the next cycle of use.

[0031] Meanwhile, in order to avoid the risk of loss of the clamp (1) and the tie (3), after the operator cleans the clamp (1) and the tie (3), the operator can adjustably install the tie (3) on the clamp again.

[0032] Throughout the entire implementation process described above, clamping and tying components, constructed from two angle steel pieces welded together, are used in conjunction with each other during installation. The tying components utilize turnbuckles, whose length can be adjusted by rotation. This applies a continuous and uniform preload to the steel cladding at the four corners of the structural column, ensuring a tight fit between the steel cladding and the original column surface, preventing gaps and ensuring that they form a "shared load-bearing system." When the structural column is under load or during the pouring of concrete, the clamping and tying components can simultaneously bear the load, preventing stress concentration or reinforcement failure due to insufficient fit. Simultaneously, the preload can offset some of the column's lateral deformation, further enhancing structural stability.

[0033] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0034] 1. This utility model is simple to manufacture, easy to construct, and recyclable. It can achieve standardized processing and production, and has strong applicability and versatility in actual operation. It effectively solves the problems of low work efficiency, poor verticality of steel wrapping, and poor forming quality in the construction of steel-encased structural columns. It has obvious innovation, quality advantages, and economic advantages.

[0035] 2. This utility model is simple to construct, highly applicable, safe and reliable, and easy to install and dismantle.

[0036] Convenient and economical, the clamping and tying components, which are welded together by two angle steels, are used in conjunction with each other. The tying components use turnbuckles, and their length can be adjusted by rotation. This applies a continuous and uniform preload to the steel cladding at the four corners of the structural column, ensuring that the steel cladding fits tightly against the original column surface and avoiding gaps. This ensures that the two form a "shared load-bearing system"—when the structural column is under load or when the concrete is poured, the clamping and tying components can immediately and synchronously bear the load, avoiding stress concentration or reinforcement failure due to poor fit. At the same time, the preload can offset some of the lateral deformation of the column, further improving the structural stability.

[0037] 3. This utility model, through the "closed-loop constraint" formed by the clamping member and the connecting member, can achieve...

[0038] It effectively limits the lateral displacement and shear deformation of structural columns, especially under horizontal loads such as earthquakes and wind loads. It can reduce the development of plastic hinges in columns, improve the ductility and energy dissipation capacity of the structure, and conform to the design principle of "strong column and weak beam" for seismic strengthening.

[0039] 4. The exterior of this utility model is coated with an anti-rust layer and a waterproof layer, which can prevent rusting and extend the service life of the entire reinforcement component. It is environmentally friendly and saves resources. At the same time, the exterior of the reinforcement component is coated with a self-luminous fluorescent material, which can clearly mark the location of the reinforcement component at night or in dark indoor or underground construction environments. It can effectively play a safety warning role, improve visibility, make it easy for people to identify, and increase safety in construction and life. Attached Figure Description

[0040] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0041] Figure 1 This is one of the schematic diagrams showing the usage state of this utility model;

[0042] Figure 2 This is the second schematic diagram of the usage state of this utility model;

[0043] Figure 3 This is the third schematic diagram of the usage state of this utility model;

[0044] Figure 4 This is one of the schematic diagrams of the overall assembly structure of this utility model;

[0045] Figure 5 This is the second schematic diagram of the overall assembly structure of this utility model;

[0046] Figure 6 This is an exploded view of the overall structure of this utility model;

[0047] Figure 7 This is one of the overall combined structure diagrams of another design structure of this utility model;

[0048] Figure 8 This is the second schematic diagram of the overall combined structure of another design structure of this utility model;

[0049] Figure 9 This is a schematic diagram of the usage state of another design structure of this utility model;

[0050] Figure 10 This is another schematic diagram of the installation and use of this utility model;

[0051] In the figure, the numbers are: 1—clamping component, 11—upper clamping plate, 12—lower clamping plate;

[0052] 2—Connecting ring;

[0053] 3—Connecting components;

[0054] 4—Anti-detachment limiting locking assembly;

[0055] 5—Structural columns;

[0056] 5—Structural column, 51—Structural column formwork, 52—Structural column steel cladding, 53—Concrete. Detailed Implementation

[0057] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0058] In summary, a more specific embodiment of this utility model is as follows:

[0059] Example 1

[0060] like Figures 1 to 6 The structural column steel-clad auxiliary reinforcement component shown includes:

[0061] Clamping member 1, which is arranged opposite to each other on any two opposite sides of the structural column 5:

[0062] Connecting ring 2, which is connected to the inner sidewalls of both ends of each clamping member 1;

[0063] Tie member 3 is adjustablely connected between two opposite connecting rings 2, and the tie member 3 is located on the outside of the structural column 5, forming a hollow frame-type structural column steel-clad auxiliary reinforcement component.

[0064] Furthermore, such as Figure 6 As shown, the clamping member 1 is composed of an upper clamping plate 11 and a lower clamping plate 12 connected to the upper clamping plate 11, wherein the upper clamping plate 11 and the lower clamping plate 12 form a plate-shaped component with a T-shaped cross section.

[0065] Specifically, such as Figure 6 As shown, both the upper clamping plate 11 and the lower clamping plate 12 are L-shaped angle steel.

[0066] Specifically, such as Figure 6 As shown, the bottom surface of the upper clamping plate 11 and the top surface of the lower clamping plate 12 are fully welded together to form an integral structure.

[0067] Furthermore, the connecting ring 2 is generally Ω-shaped, zigzag-shaped, or ring-shaped.

[0068] Specifically, the connecting rings 2 are symmetrically fixed to the inner sidewall of the clamping member 1, and the two connecting rings 2 are arranged on the same axis.

[0069] The steel-encased auxiliary reinforcement components for the frame structure columns are installed as a separate set for use.

[0070] In this utility model, the fixed connection is that the connecting ring 2 is directly welded to the inner wall of the clamping member 1, or the connecting ring 2 and the clamping member 1 are directly machined into an integral structure.

[0071] Furthermore, the tie member 3 is a closed-body turnbuckle, an open-body turnbuckle, or a marine turnbuckle.

[0072] Specifically, the tie member 3 is a CC-type open rigging spiral buckle with hooks symmetrically set at both ends.

[0073] Furthermore, from the inside out, the outer surfaces of the clamping member 1, the connecting ring 2, and the tie member 3 are sequentially provided with an injection molding layer, an anti-rust layer, a waterproof layer, and a warning layer, with fluorescent powder coated on the warning layer.

[0074] In this invention, a polymer wear-resistant material is injection molded onto the injection molding layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat, as well as an epoxy micaceous iron oxide intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; and the warning layer is a reflective warning tape, reflective film, or reflective paint of a single color or a mixture of multiple colors.

[0075] Meanwhile, in this utility model, all connections referred to are fixed connections, movable connections, or detachable connections. Among them, fixed connections are welded connections or directly processed into an integral structure; movable connections, detachable connections, or split structures are hinged connections, internal and external threaded connections, bayonet connections, plug-in sleeves, bolt assembly connections, or screw connections.

[0076] Before using the structural column steel-clad auxiliary reinforcement component designed in Embodiment 1, the already manufactured auxiliary reinforcement component needs to be transported to the designated construction location by appropriate handling equipment or directly by manual labor for installation as a backup.

[0077] In use, operators only need to select an appropriate number of auxiliary reinforcement components of this utility model according to the specific reinforcement requirements of structural column 5, and then install them.

[0078] During installation, one or two operators typically work together to place two pre-prepared clamping components 1 on opposite sides of the structural column 5. Then, two pre-prepared tie rods 3 are tunably connected between two opposite connecting rings 2, with the tie rods 3 located on the outside of the structural column 5. The tie rods 3 and clamping components 1 are adjusted to ensure a more stable and reliable clamping connection, thus forming a hollow frame-type structural column steel-clad auxiliary reinforcement component. This hollow frame-type structural column steel-clad auxiliary reinforcement component reinforces the structural column 5. Multiple reinforcement components of this invention are installed sequentially on the same structural column 5 from top to bottom or bottom to top, at equal or unequal intervals, using the same installation method, to complete the auxiliary reinforcement of the structural column 5. After reliable reinforcement, the subsequent pouring of the structural column concrete 53 can then proceed.

[0079] During pouring, the operator only needs to pour the structural column concrete 53 from top to bottom into the cavity of the reinforced structural column formwork 52, and vibrate it while pouring to make it dense.

[0080] Finally, as time goes on, when all the structural column concrete 53 is poured and cured to meet the conditions for demolding, the operator only needs to remove the auxiliary reinforcement components of this utility model. During removal, the operator only needs to loosen one end of the tie member 3 and remove one end of the tie member 3 from one of the clamping members 1. Then, the operator removes the other end of the tie member 3 from the other clamping member 1 to separate it from the clamping member 1. Following this method, the removal of this utility model is completed. After removal, the operator can clean and repair the various parts of this utility model and then transport them to the designated tool storage warehouse for storage by manual labor or corresponding handling equipment for future recycling.

[0081] Meanwhile, to avoid the risk of losing clamping component 1 and tie component 3, after the operator cleans clamping component 1 and tie component 3, the operator can adjustably install tie component 3 back onto the clamping component.

[0082] Throughout the entire implementation process described above, clamping and tying components, constructed from two angle steel pieces welded together, are used in conjunction with each other during installation. The tying components utilize turnbuckles, whose length can be adjusted by rotation. This applies a continuous and uniform preload to the steel cladding at the four corners of the structural column, ensuring a tight fit between the steel cladding and the original column surface, preventing gaps and ensuring that they form a "shared load-bearing system." When the structural column is under load or during the pouring of concrete, the clamping and tying components can simultaneously bear the load, preventing stress concentration or reinforcement failure due to insufficient fit. Simultaneously, the preload can offset some of the column's lateral deformation, further enhancing structural stability.

[0083] Example 2

[0084] This embodiment 2 is the same as embodiment 1, except that, as Figures 7 to 9 As shown, the tie member 3 is a UU-shaped open rigging spiral buckle with symmetrical U-shaped openings at both ends; wherein, a through hole is provided vertically through the open end of the UU-shaped open rigging spiral buckle, and an anti-loosening limiting locking component 4 is detachably installed on the through hole.

[0085] In this utility model, the anti-detachment limiting locking component 4 includes a bolt and a nut. After the bolt passes through the through hole, the end is locked and fixed by the nut. The bolt is a hexagonal bolt or a flat-head bolt, and the nut is a hexagonal nut or a flat-head nut.

[0086] Specifically, on the outer surface of the anti-detachment limiting locking component 4, an injection molding layer, an anti-rust layer, a waterproof layer, and a warning layer are sequentially provided from the inside to the outside, and the warning layer is coated with fluorescent powder.

[0087] In this invention, a polymer wear-resistant material is injection molded onto the injection molding layer; the anti-rust layer includes an epoxy zinc-rich primer and a chlorinated rubber topcoat, as well as an epoxy micaceous iron oxide intermediate paint located between the epoxy zinc-rich primer and the chlorinated rubber topcoat; the waterproof layer is a polyurethane waterproof coating; and the warning layer is a reflective warning tape, reflective film, or reflective paint of a single color or a mixture of multiple colors.

[0088] The usage of Embodiment 2 is the same as that of Embodiment 1. The only difference is that when installing the tie member 3, the operator only needs to use two pre-prepared tie members 3 to adjustably connect between the two opposite connecting rings 2, and the tie member 3 is located on the outside of the structural column 5. After adjusting the two tie members 3 and the two clamping members 1 to make the clamping connection more stable and reliable, the anti-detachment limiting locking assembly 4 is used to detachably lock and fix the tie member 3 and the connecting ring 2 into an integral structure, thereby forming a hollow frame-type structural column steel-encased auxiliary reinforcement assembly. The structural column 5 is reinforced by the hollow frame-type structural column steel-encased auxiliary reinforcement assembly. Multiple reinforcement assemblies of this utility model are installed on the same structural column 5 from top to bottom or from bottom to top in sequence at equal or unequal intervals using the same installation method.

[0089] As time goes on, when disassembly is required, the operator only needs to remove the nut of the anti-disengagement limiting locking component 4 and take out the bolt of the anti-disengagement limiting locking component 4 from the through-hole, thereby achieving separation from the clamping component 1.

[0090] Other usage operations are the same as in Example 1, and will not be repeated here.

[0091] Example 3

[0092] like Figure 10 As shown, this embodiment 3 is the same as embodiment 1 and embodiment 2, except that two sets of the steel-clad auxiliary reinforcement components for the frame structure columns are used in a crisscrossing arrangement.

[0093] The third embodiment is basically the same as the first and second embodiments in use. The only difference is that instead of using a single set of auxiliary reinforcement components as a single reinforcement component, the third embodiment uses two sets together as a single reinforcement component. Specifically, two sets are installed on the outside of the structural column 5 in a crisscross pattern to form an auxiliary reinforcement component.

[0094] Other specific uses are the same as in Examples 1 and 2, and will not be repeated here.

[0095] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A structural column steel-clad auxiliary reinforcement component, characterized in that... :comprising: clamping members (1), wherein the clamping members (1) are arranged opposite to each other on any two opposite sides of a structural column (5): connecting rings (2), wherein the connecting rings (2) are respectively connected to inner side walls at two ends of each clamping member (1); tie members (3), wherein the tie members (3) are respectively adjustably connected between two opposite connecting rings (2), and the tie members (3) are located outside the structural column (5), so as to form a frame-type steel-cladding auxiliary reinforcement assembly for a structural column with a hollow interior.

2. The structural column steel-clad auxiliary reinforcement component according to claim 1, characterized in that: The clamping member (1) consists of an upper clamping plate (11) and a lower clamping plate (12) connected to the upper clamping plate (11), wherein the upper clamping plate (11) and the lower clamping plate (12) together form a plate-shaped member with a T-shaped cross section.

3. The structural column steel-clad auxiliary reinforcement component according to claim 2, characterized in that: Both the upper clamping plate (11) and the lower clamping plate (12) are L-shaped angle steels.

4. The structural column steel-clad auxiliary reinforcement component according to claim 3, characterized in that: The bottom surface of the upper clamping plate (11) and the top surface of the lower clamping plate (12) are fully welded to form an integrally formed structure.

5. The structural column steel-clad auxiliary reinforcement component according to claim 1, characterized in that: The connecting ring (2) has an overall Ω-shaped structure, an inverted U-shaped structure, or an annular structure.

6. The structural column steel-clad auxiliary reinforcement component according to claim 5, characterized in that: The connecting rings (2) are symmetrically and fixedly connected to the inner side wall of the clamping members (1), and the two connecting rings (2) are arranged coaxially.

7. The structural column steel-clad auxiliary reinforcement component according to claim 1, characterized in that: The tie member (3) is a closed turnbuckle, an open turnbuckle, or a marine turnbuckle.

8. The structural column steel-clad auxiliary reinforcement component according to claim 7, characterized in that: The tie member (3) is a CC-type open rigging screw with both ends symmetrically arranged in a hook shape; Alternatively, the tie member (3) is a UU-type open rigging screw with both ends symmetrically arranged in a U-shaped opening; wherein an opposite through hole is vertically penetratingly provided at an opening end of the UU-type open rigging screw, and an anti-drop limit locking assembly (4) is detachably mounted on the opposite through hole.

9. The structural column steel-clad auxiliary reinforcement component according to claim 1, characterized in that: The frame-type steel-cladding auxiliary reinforcement assembly for a structural column is used as a separately installed set; Alternatively, two sets of the frame-type steel-cladding auxiliary reinforcement assemblies for structural columns are used in a vertically and horizontally staggered, spliced and combined installation manner.

10. The structural column steel-clad auxiliary reinforcement component according to claim 1, characterized in that: An injection molding layer, an antirust layer, a waterproof layer and a warning layer are sequentially arranged from inside to outside on outer surfaces of the clamping members (1), the connecting rings (2) and the tie members (3), and fluorescent powder is coated on the warning layer.

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