A construction column embedded steel bar protection device

Abstract

This utility model discloses a protective device for embedded rebar in a structural column, comprising a flexible splicing plate for surrounding the embedded rebar and at least one fastening component disposed on the flexible splicing plate. The flexible splicing plate includes multiple uniformly arranged and movably spliced ​​in pairs of protective strips. Each fastening component includes multiple abutments spaced apart on the outer wall of the flexible splicing plate and multiple elastic connectors corresponding to the abutments. The abutments abut against the outer wall of the protective strips. The multiple abutments and multiple elastic connectors are alternately connected in a ring along the arrangement direction of the protective strips to fasten the multiple protective strips to the embedded rebar. During construction protection, the flexible splicing plate is surrounded on the outside of the embedded rebar, and the fastening component, with multiple abutments and multiple elastic connectors alternately connected in a ring along the arrangement direction of the protective strips, ensures that each protective strip is reliably fastened and covers the embedded rebar, thus forming a stable and closed protective barrier structure.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for pre-embedded steel bars in structural columns, and in particular to a protective device for pre-embedded steel bars in structural columns. Background Technology

[0002] In the construction process, structural columns, as key secondary structures that enhance the overall stability and seismic performance of buildings, directly affect the reliability of the connection and the overall load-bearing capacity of the superstructure due to the quality of their pre-embedded reinforcing bars. Especially during the construction of cast-in-place floor slabs, structural columns typically require vertical reinforcing bars to be pre-embedded in the lower structure and extend upwards to achieve effective connection and continuity between the upper and lower structural systems. However, construction sites are characterized by dense workforces, frequent material transportation, and constant movement of machinery. Pre-embedded reinforcing bars are often exposed before being fully enclosed and formed, making them highly susceptible to external interference. Their straightness and structural integrity face significant risks in actual construction.

[0003] Currently, temporary protective measures are typically used to protect embedded reinforcing bars. These include erecting wooden barriers around the bars to provide basic physical isolation, or covering them with plastic protective tubing for visual warning and initial cushioning. Conspicuous safety warning signs are also posted to guide on-site workers to avoid the area. In addition, to improve stability, simple support structures or binding materials are sometimes used to temporarily secure the reinforcing bars. These measures are simple to implement and low in cost, and are widely used in some construction scenarios.

[0004] However, existing protective methods are mostly temporary structures with limited material strength and weak impact resistance, often failing to provide continuous and effective protection against ongoing construction interference or sudden impacts. Furthermore, their structural forms are relatively simple, lacking standardized design, and have significant limitations in adapting to the protection needs of structural column reinforcement of different specifications and locations. Therefore, there is an urgent need to develop a structurally sound, reliable, quick-to-install, and highly adaptable structural column embedded reinforcement protection device to better address the complex needs of construction sites, ensure the quality of embedded reinforcement, and improve the safety and standardization of the construction process. Utility Model Content

[0005] This utility model provides a protective device for embedded steel bars in structural columns to solve the technical problem that the existing structural column steel bar protection structures have poor adaptability and are difficult to meet the protection needs of embedded steel bars in different types of structural columns.

[0006] To address the aforementioned technical problems, this utility model provides a protective device for embedded reinforcing bars in structural columns, comprising a flexible splicing plate for surrounding the outside of the embedded reinforcing bars and at least one fastening component disposed on the flexible splicing plate. The flexible splicing plate comprises a plurality of uniformly arranged and movable protective strips in pairs. The fastening component comprises a plurality of abutting members spaced apart on the outer wall of the flexible splicing plate and a plurality of elastic connecting members corresponding to the abutting members. The abutting members abut against the outer wall of the protective strips. The plurality of abutting members and the plurality of elastic connecting members are connected alternately in a ring along the arrangement direction of the protective strips to fasten the plurality of protective strips to the embedded reinforcing bars.

[0007] Furthermore, the flexible splicing panel also includes two flexible rubber strips respectively disposed at both ends of the protective strips, and the flexible rubber strips are provided with insertion grooves, and the ends of the plurality of protective strips are respectively inserted into the insertion grooves on the two flexible rubber strips.

[0008] Furthermore, the flexible splicing plate is also provided with a flexible reflective film, which is attached to the outer wall of the multiple protective strips along the arrangement direction of the protective strips, and the two ends of the flexible reflective film are respectively embedded in the insertion grooves on the two flexible adhesive strips.

[0009] Furthermore, the fastening assembly also includes a plurality of sliding rods corresponding to the abutment and limiting members respectively disposed at both ends of the sliding rods. The limiting members are disposed on the protective strip. The abutment has a sliding hole adapted to the sliding rod, and the sliding rod passes through the sliding hole so that the abutment slides along the outer wall of the protective strip.

[0010] Furthermore, the limiting member has a limiting slot, which is engaged with the flexible rubber strip.

[0011] Furthermore, the outer wall of the abutment member is provided with a threaded hole that extends through the sliding hole, and a fastening bolt is provided in the threaded hole. The fastening bolt is used to abut against the sliding rod to limit the fixed position of the abutment member.

[0012] Furthermore, a limiting groove is provided on the side of the abutment near the protective strip, and the opening of the limiting groove gradually extends perpendicular to the arrangement direction of the protective strip.

[0013] Furthermore, the limiting groove is any one of a wedge-shaped groove, an arc-shaped groove, or a square groove.

[0014] Furthermore, the width of the limiting groove is greater than the width of the protective strip.

[0015] Furthermore, the elastic connector has multiple through holes, and the abutment is provided with a fixing member, which passes through the fixing holes to fix the elastic connector and the abutment together.

[0016] Compared with the prior art, the beneficial effects of this utility model embodiment of the pre-embedded steel bar protection device for structural columns are as follows:

[0017] This utility model embodiment constructs an integral flexible connection system with excellent deformation capability by movably splicing multiple protective strips in pairs in a uniform arrangement. This forms a flexible splicing plate with flexible structure and strong fit. When construction protection of embedded steel bars in structural columns is required, the flexible splicing plate is simply placed around the outside of the embedded steel bars according to their shape. It tightly and flexibly adapts to embedded steel bar structures of different shapes and sizes. Then, multiple abutment members and multiple elastic connectors are alternately and circumferentially connected to the outer wall of the flexible splicing plate along the arrangement direction of the protective strips. The system relies on the abutment action of the abutment members and the rebound limiting effect of the elastic connectors. The elastic fastening mechanism forms a stable and closed protective barrier structure, reliably securing each protective strip to the embedded rebar. The overall structure not only possesses excellent mechanical support performance, effectively resisting impact loads, collision interference, and complex environmental factors at the construction site, ensuring the stability, fit, and resistance to disturbances throughout the construction cycle, preventing loosening, displacement, or structural failure; it also effectively supports modular rapid disassembly and efficient reuse, significantly improving on-site work efficiency and construction safety, reducing material waste and subsequent maintenance burden after the removal of traditional disposable protective materials, lowering labor and material costs, and alleviating resource consumption and environmental pressure. Compared to traditional protective structures, this utility model embodiment significantly improves the overall performance of the pre-embedded rebar protection device for structural columns in terms of versatility, adaptability, stability, and durability. It can flexibly address the rebar protection needs of various sizes, shapes, and construction conditions, greatly enhancing the engineering quality assurance capability and possessing outstanding application value and broad promotion prospects.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0019] The accompanying drawings are provided for a better understanding of this solution and do not constitute a limitation on this utility model. Wherein:

[0020] Figure 1 This is a structural schematic diagram of the pre-embedded steel reinforcement protection device for structural columns provided in this embodiment of the utility model;

[0021] Figure 2This is a structural schematic diagram from another perspective of the pre-embedded steel reinforcement protection device for structural columns provided in this embodiment of the utility model;

[0022] Figure 3 This is a structural schematic diagram of the pre-embedded steel bar protection device for structural columns provided in this embodiment of the invention, showing another perspective on removing the flexible rubber strip;

[0023] Figure 4 This is a schematic diagram of the structure of the limiting and fitting flexible splicing plate in the pre-embedded steel bar protection device for structural columns provided in this utility model embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of the metal wire series flexible splicing plate in the pre-embedded steel bar protection device for structural columns provided in this utility model embodiment;

[0025] Figure 6 This is a schematic diagram of the flexible rubber strip in the pre-embedded steel bar protection device for structural columns provided in this embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the protective device for embedded steel bars in the structural column provided in this embodiment of the utility model, in which the supporting and limiting components are located on the sliding rod;

[0027] Figure 8 This is a schematic diagram of the supporting component in the pre-embedded steel reinforcement protection device for structural columns provided in this embodiment of the utility model;

[0028] Figure 9 This is a schematic diagram of the elastic connector in the pre-embedded steel reinforcement protection device for structural columns provided in this embodiment of the utility model.

[0029] In the diagram, 10 is the embedded steel bar; 20 is the flexible splicing plate; 21 is the protective strip; 22 is the flexible adhesive strip; 221 is the insertion groove; 23 is the flexible reflective film; 30 is the fastening component; 31 is the supporting component; 311 is the sliding hole; 312 is the screw hole; 313 is the limiting groove; 32 is the elastic connector; 321 is the fixing hole; 33 is the sliding rod; 34 is the limiting component; 341 is the limiting bayonet; 35 is the fastening bolt; and 36 is the fixing component. Detailed Implementation

[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, it should be noted that the directional terms such as "middle", "upper", "lower", "inner", "outer", "vertical", "lateral", "vertical", and "horizontal" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] In this utility model, the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. "A plurality" means two or more, unless otherwise explicitly defined. "Several" means one or more, unless otherwise explicitly defined.

[0034] For ease of explanation later, it should be clarified that the embedded steel bars 10 in structural columns refer to a set of steel reinforcement structures pre-installed and fixed inside the formwork at predetermined locations of the structural columns during the building construction process. These reinforcements enhance the integrity and seismic performance of the walls. They primarily serve as the core load-bearing framework during subsequent concrete pouring, ensuring a stable connection and coordinated operation between the structural columns and adjacent walls, thereby effectively improving the stability and safety of the building structure. These embedded steel bars 10 typically consist of longitudinal main bars, stirrups, and positioning bars. Common arrangement forms include four-sided arrangements, rectangular arrangements, or other distribution methods specified in the design drawings. Their cross-sectional shape is mostly rectangular or circular frame structures, and the number and diameter of the steel bars are configured according to load requirements and construction specifications. In actual construction, these embedded steel bars 10 are often partially or completely exposed outside the wall formwork, with gaps and voids between them. They are highly susceptible to construction interference, mechanical collisions, accidental impacts, or contamination from debris. Without proper protective measures, this can easily lead to deformation, displacement, corrosion, or contamination of the steel bars, affecting not only subsequent formwork installation and concrete forming quality but also potentially posing a threat to structural safety. Therefore, implementing scientific and reliable protective measures for the pre-embedded steel bars 10 in structural columns is a key step in ensuring construction quality and improving the level of standardized management of the project.

[0035] Reference Figure 1-5 As shown, this utility model embodiment provides a protective device for embedded steel bars 10 in a structural column, including a flexible splicing plate 20 for surrounding the outside of the embedded steel bars 10 and at least one fastening component 30 disposed on the flexible splicing plate 20. The flexible splicing plate 20 includes a plurality of uniformly arranged and movablely spliced ​​protective strips 21. Each fastening component 30 includes a plurality of abutment members 31 spaced apart on the outer wall of the flexible splicing plate 20 and a plurality of elastic connectors 32 corresponding to the abutment members 31. The abutment members 31 abut against the outer wall of the protective strips 21. The plurality of abutment members 31 and the plurality of elastic connectors 32 are connected in a ring alternately along the arrangement direction of the protective strips 21 to fasten the plurality of protective strips 21 to the embedded steel bars 10.

[0036] This embodiment of the invention constructs a flexible connection system with excellent deformation capability by movably splicing multiple protective strips 21 in pairs in a uniform arrangement, forming a flexible splicing plate 20 with flexible structure and strong fit. When construction protection is required for the pre-embedded steel bars 10 of the structural column, the flexible splicing plate 20 is simply set around the outside of the pre-embedded steel bars 10 according to their shape, tightly and flexibly adapting to pre-embedded steel bars 10 of different shapes and sizes. Then, multiple abutment members 31 and multiple elastic connectors 32 are connected in a ring along the arrangement direction of the protective strips 21 to the fastening assembly 30 on the outer wall of the flexible splicing plate 20. Relying on the abutment action of the abutment members 31 and the elastic connection... The spring-loaded limiting and elastic fastening effect of the connector 32 forms a stable and closed protective barrier structure, ensuring that each protective strip 21 is reliably fastened and wrapped around the embedded steel bar 10. The overall structure not only possesses excellent mechanical support performance, effectively resisting impact loads, collision interference, and complex environmental factors at the construction site, ensuring the stability, fit, and resistance to disturbances of the protective device throughout the entire construction cycle, and preventing loosening, displacement, or structural failure; it also effectively supports modular rapid disassembly and efficient reuse, significantly improving on-site operation efficiency and construction safety, reducing material waste and subsequent maintenance burden after the removal of traditional disposable protective materials, lowering labor and material costs, and reducing resource consumption and environmental pressure. Compared to traditional protective structures, this utility model embodiment significantly improves the overall performance of the protective device for embedded steel bars 10 in terms of versatility, adaptability, stability, and durability. It can flexibly cope with the steel bar protection needs under various sizes, shapes, and construction conditions, greatly enhancing the engineering quality assurance capability and possessing outstanding application value and broad promotion prospects.

[0037] To achieve high adaptability, reliability, and repeatability of protection for the pre-embedded steel bars 10 in structural columns under various shapes and sizes, this embodiment of the invention introduces a flexible splicing plate 20 structure in the overall structural design. This flexible splicing plate 20 consists of multiple protective strips 21 evenly arranged at a set pitch and assembled using a movable connection between pairs, thus constructing a splicing system with overall flexible deformation capability. Compared to the traditional method of using a single rigid plate to enclose the pre-embedded steel bars 10 in the structural column through on-site cutting, trimming, or grooving, this solution significantly reduces installation difficulty and adaptation costs through modular splicing. On the one hand, it avoids the adaptation problems that arise when traditional large-size plates are used with structural columns of irregular cross-sections (such as T-shaped, L-shaped, concave and convex corners) or non-standard sizes, such as inability to bend, poor fit, and serious material waste. On the other hand, it also eliminates the cumbersome construction steps of repeatedly cutting and disassembling the plate, adjusting dimensions, or adding auxiliary structures, making the flexible splicing plate 20 more suitable for rapid installation and flexible configuration in changing on-site environments. Especially when facing high-altitude operations, confined spaces, or time-sensitive construction nodes, its excellent adjustability and retractability can significantly improve construction efficiency and safety assurance capabilities, while effectively reducing subsequent rectification costs caused by construction errors or misoperations. Overall, it demonstrates practicality and adaptability far superior to traditional solutions.

[0038] The flexible splicing panel 20 can be configured to achieve flexible and movable connections between the protective strips 21 using the following two connection structures, depending on the requirements of different construction scenarios: One is a limiting and fitting movable connection structure. In this structure, each protective strip 21 has a set of longitudinally extending structural mating units on its side wall, including a strip-shaped limiting part located on one edge of the protective strip 21 and a limiting opening groove on the opposite edge. The strip-shaped limiting part can be a semi-cylindrical, trapezoidal, or dovetail-shaped protrusion, and its shape matches the cross-sectional structure of the corresponding limiting groove 313, ensuring a smooth connection. The first type of structure provides reliable interlocking and positioning. During assembly, the strip-shaped limiting part of the next protective strip 21 simply slides into the limiting opening groove of the previous protective strip 21, and the strips are arranged and spliced ​​sequentially to complete the movable plug-in connection. This facilitates quick assembly and does not rely on additional fasteners. This limiting and interlocking structure not only achieves efficient splicing but also has good axial limiting stability, preventing longitudinal misalignment or detachment of the protective strips 21 during construction. It allows the strips to swing or fold at a small angle relative to each other on the splicing axis, thus giving the overall spliced ​​panel good flexible deformation capability. The second type is a metal wire series movable connection structure. This structure uses wires with excellent flexibility and high tensile strength, such as stainless steel wire, high-strength polyester wire, or composite fiber wire, to connect multiple protective strips 21 sequentially in series at a preset small interval. A suitable gap is reserved at the connection between the wire and the protective strip 21, allowing the splicing plate to maintain its overall neat arrangement while enabling relative sliding and slight rotation between the strips. This forms a "rigid-flexible composite" structure combining rigid strips and flexible connectors. This composite structure possesses excellent flexibility and adaptability, allowing for smooth bending, winding, and even multi-angle twisting. It meets the requirements for tight fit in enclosing irregularly shaped structural columns and complex spatial environments. This not only improves the deformation freedom and installation flexibility of the protective device but also significantly enhances the overall structure's durability and fatigue resistance, effectively supporting repeated disassembly and reuse, greatly improving construction efficiency and economic benefits. It should be noted that the two connection structures described above are only optional connection methods between the protective strips 21 of the flexible splicing plate 20 in this embodiment of the invention, designed to better adapt to the actual needs for flexibility, anti-fall-off, and convenient assembly in different construction scenarios. Its purpose is to provide diverse technical implementation paths and improve the applicability and flexibility of the product, and does not constitute a limitation on the scope of protection in the claims of this invention. Without departing from the core design concept of this utility model, those skilled in the art may replace, improve or make equivalent adjustments to the connection structure according to specific usage conditions. For example, using an elastic snap-fit ​​pivot structure, that is, embedding an integrated elastic pivot assembly between two adjacent protective strips 21 to achieve flexible rotation connection of the protective strips 21 similar to loose-leaf book pages, should also be considered as falling within the protection scope of this utility model.

[0039] The protective strip 21 is typically made of aluminum alloy due to its superior properties: aluminum alloy is lightweight, making it easy to handle and install, while also possessing high strength and rigidity, providing reliable mechanical protection for the embedded steel bars 10 in the structural column; furthermore, aluminum alloy exhibits excellent corrosion resistance and weather resistance, adapting to the varying environmental conditions at construction sites and ensuring the long-term stability and durability of the protective device. In short, aluminum alloy provides the protective strip 21 with ideal characteristics of being lightweight, high-strength, durable, and easy to process, making it a commonly used and preferred material in protective devices for embedded steel bars 10 in structural columns. The connection method and material selection of the protective strip 21 described above are only one preferred embodiment of this utility model. The specific structural form and material type can be adjusted and optimized according to actual construction needs, environmental conditions, and cost considerations to meet the diverse requirements of different projects for strength, weight, corrosion resistance, and economy, achieving personalized customization and optimized configuration based on specific engineering characteristics.

[0040] The fastening assembly 30 consists of multiple evenly spaced abutment members 31 and correspondingly numerous elastic connectors 32 arranged on the outer wall of the flexible splicing panel 20. The fastening assembly 30, through the alternating ring connection of the multiple abutment members 31 and elastic connectors 32 along the arrangement direction of the protective strips 21, forms a ring-like collar, tightly wrapping around the outer side of the flexible splicing panel 20, which is composed of multiple protective strips 21, achieving overall stable fastening. The abutment members 31 are directly set on the outer wall of the protective strips 21, providing a wide contact surface, effectively dispersing the force on the elastic connectors 32, and preventing premature wear due to local friction or pressure. Typically, one to five fastening assemblies 30 are reasonably configured during construction, with at least one in the middle of the flexible splicing panel 20, to prevent the ends from tilting due to lack of support, ensuring tight and stable coverage; too many fastening assemblies 30 may increase installation difficulty and limit overall flexible deformation. The elastic connector 32 is made of highly elastic materials such as rubber strips and is tightly connected to the support member 31 by means of binding, screws and other fixing methods. The elastic design of the elastic connector 32 can effectively adapt to the thermal expansion and contraction and slight deformation caused by temperature changes at the construction site, so that the fastening component 30 can be flexibly adjusted with the size of the splicing plate, avoiding the fasteners from falling off or the protective strip 21 from being damaged due to rigid fixing, thereby significantly improving the stability, durability and applicability of the protective device.

[0041] It is important to emphasize that the selection of multiple abutment members 31 and corresponding elastic connectors 32 for the aforementioned fastening assembly 30 is primarily based on a comprehensive consideration of the structural characteristics of the flexible splicing plate 20. Since the flexible splicing plate 20 is composed of multiple small-sized protective strips 21 joined together, it inevitably has numerous splicing edges and corners. These structural features may cause a certain degree of compression, friction, or even damage to the elastic connectors 32 made of flexible material during use. To improve the service life of the elastic connectors 32 and ensure that they still possess good buffering and connection effects under stress, this embodiment preferably provides multiple abutment members 31. This allows each elastic connector 32 to be effectively "supported" or positioned at a certain spatial height by means of the support of two adjacent abutment members 31 during connection, thereby forming a preset gap between it and the protective strips 21. This structural design not only significantly reduces the direct contact and friction between the elastic connectors 32 and the surface of the protective strips 21 but also improves the flexibility and durability of the entire device. Preferably, the number of the supporting member 31 and the elastic connector 32 is set to three or more to further improve the support effect and structural stability, and meet the connection requirements under different usage environments.

[0042] Reference Figure 4-6 As shown, in an optional embodiment of the present invention, the flexible splicing plate 20 further includes two flexible adhesive strips 22 respectively disposed at both ends of the protective strips 21. The flexible adhesive strips 22 are provided with insertion grooves 221, and the ends of the multiple protective strips 21 are respectively inserted into the insertion grooves 221 on the two flexible adhesive strips 22.

[0043] Specifically, by setting flexible adhesive strips 22 at both ends of the protective strips 21 and firmly connecting each protective strip 21 together using an interlocking method, not only is the overall structural strength and lateral stability of the flexible splicing panel 20 significantly improved, but it also demonstrates outstanding technical advantages in multiple application areas. First, the flexible adhesive strips 22 achieve precise positioning and effective limitation of the ends of the protective strips 21 through the interlocking grooves 221 on their bodies, forming a rigid boundary structure similar to an "end frame," effectively preventing the splicing panel from loosening or misaligning due to vibration, external impact, or frequent disassembly during transportation, installation, or construction, thereby causing overall structural deformation or instability. At the same time, the flexible adhesive strips 22, as the "edge-sealing skeleton" of the end frame, play a role in strengthening the boundary and stabilizing the shape of the splicing structure, enhancing the overall impact resistance and stress balance. Second, the bodies of the flexible adhesive strips 22 are mostly made of polymer materials or rubber materials with good elastic recovery capabilities, which can quickly restore their original shape after being subjected to external pressure, stretching, or bending. This material property not only improves the flexibility of the splicing structure, but also enables the entire flexible splicing plate 20 to effectively cope with minor dimensional changes caused by thermal expansion and contraction, structural distortion or construction errors when covering the pre-embedded steel bars 10 of the structural column, ensuring that the protective device can work stably in complex environments for a long time.

[0044] In addition, the flexible rubber strip 22 also plays an important safety protection role. The ends of the protective strips 21 often have relatively sharp edges or corners. Without flexible covering, they can easily cause personal injury risks such as scratches and bumps to workers during construction, handling, or on-site operations. They may also damage the steel reinforcement of the structural column or its attached structures. The flexible rubber strip 22, by completely covering the ends of the strips, not only softens the edges and buffers impacts, but also improves anti-slip properties and operating comfort, significantly improving the safety and human-machine collaboration efficiency on the construction site. The flexible rubber strip 22 has a simple structure, is easy to assemble, and has good disassembly and versatility. It is compatible with flexible splicing panels 20 of different lengths and shapes, facilitating daily maintenance, quick replacement, and reuse. This aligns with the development direction of green construction and standardized production, significantly reducing project operating costs and enhancing the sustainable application value of the system.

[0045] Therefore, the flexible rubber strip 22 not only plays a core role in structural connection and device stability, but also, with its excellent flexible buffer, safety protection and adaptability expansion performance, becomes an indispensable and important component of the flexible splicing plate 20 system, providing a solid foundation for the efficient, safe and long-term operation of the protective device for the pre-embedded steel bars 10 in the structural column.

[0046] Reference Figure 4 and Figure 5As shown, in an optional embodiment of the present invention, the flexible splicing plate 20 is further provided with a flexible reflective film 23. The flexible reflective film 23 is attached to the outer wall of multiple protective strips 21 along the arrangement direction of the protective strips 21, and the two ends of the flexible reflective film 23 are respectively embedded in the insertion grooves 221 on two flexible adhesive strips 22.

[0047] Specifically, by installing a flexible reflective film 23 on the outer wall of the flexible splicing panel 20, the visibility, safety, and overall adaptability of the device are further improved. The flexible reflective film 23 is continuously attached to the outer surface of the protective strips 21 along their arrangement direction, and is embedded at both ends in the insertion grooves 221 of the flexible adhesive strips 22, forming a covering system that closely matches and seamlessly connects with the structure of the flexible splicing panel 20. This design not only enhances the overall coordination between the protective strips 21, but also makes the reflective film itself an important component integrating reflective warning, structural assistance, and sealing protection. Firstly, functionally, the flexible reflective film 23 has excellent reflective performance. In construction environments with insufficient light or limited visibility at night, it can significantly improve the visibility of the protected area, reminding workers and machinery to maintain a safe distance, effectively reducing safety risks such as misoperation and accidental collisions, and significantly improving the controllability and safety factor of on-site operations. More importantly, the flexible reflective film 23 is made of flexible material, which can generate a certain tension linkage effect between the protective strips 21 to form a flexible support mesh surface. This helps to stabilize the relative position of each strip and enhance the connection strength and flexibility of the overall splicing structure. It is particularly suitable for flexible bonding needs that require covering irregularly shaped steel bars or complex structural areas.

[0048] Furthermore, the flexible reflective film 23 also plays a positive role in sealing and protecting the flexible splicing panel 20. The covering structure effectively blocks external media such as dust, moisture, and oil from intruding into the internal structure through the seams, reducing the risk of adhesive layer aging, delamination, or deformation failure, and extending the service life of the device. The film coverage prevents problems such as bulging and water seepage caused by edge lifting, thus ensuring the overall system's sealing and aesthetics. In terms of materials, the flexible reflective film 23 typically uses PVC (polyvinyl chloride) reflective material, which has excellent flexibility, wear resistance, and weather resistance, making it suitable for long-term use in outdoor environments such as construction sites. Other optional materials include PET (polyester film), TPU (thermoplastic polyurethane), and EVA (ethylene-vinyl acetate copolymer), all of which share the characteristics of high ductility and good adhesion, making them easy to bond with various structural substrates. For color configuration, highly visible safety colors such as silver-white, fluorescent yellow, engineering red, and bright orange can be selected according to construction site management specifications to further improve on-site management efficiency and warning effects. In summary, the flexible reflective film 23 not only fulfills the traditional reflective warning function, but also, through deep integration with the flexible splicing panel 20, leverages multiple technical advantages such as structural synergy, sealing protection, and safety protection, demonstrating extremely high engineering adaptability and application value. It is an indispensable comprehensive enhancement unit for the flexible splicing panel 20. It should be noted that in practical applications, the application method of the flexible reflective film 23 can be flexibly adjusted according to construction needs and site environment. It can be applied to one side of the flexible splicing panel 20 to meet basic warning and sealing requirements, or it can be applied to both sides of the splicing panel simultaneously to achieve bidirectional reflective warning and a higher level of structural coverage and protection. Regardless of whether a single-sided or double-sided configuration is used, it should be considered a reasonable variation and technically equivalent solution of this utility model, and both fall within the protection scope of this utility model.

[0049] Reference Figure 7 and Figure 8 As shown, in an optional embodiment of the present invention, the fastening assembly 30 further includes a plurality of sliding rods 33 corresponding to the abutment members 31 and limiting members 34 respectively disposed at both ends of the sliding rods 33. The limiting members 34 are disposed on the protective strip 21. The abutment members 31 have a sliding hole 311 that is adapted to the sliding rods 33. The sliding rods 33 pass through the sliding hole 311 so that the abutment members 31 slide along the outer wall of the protective strip 21.

[0050] Specifically, by equipping each of the multiple supporting members 31 with a corresponding sliding rod 33 and limiting members 34 located at both ends of the sliding rod 33, the sliding rod 33 passes through the sliding hole 311 of the supporting member 31 and is fixedly installed on the outer wall of the protective strip 21, allowing the supporting member 31 to slide linearly along the outer wall of the flexible splicing plate 20 under the guidance of the sliding rod 33, thus possessing excellent position adjustment capability. The limiting members 34 are set at both ends of the sliding rod 33, playing an effective stopping role, not only preventing the supporting member 31 from detaching from the sliding rod 33 during sliding, but also facilitating the fixing of the sliding rod 33 to the protective strip 21, ensuring that it always operates stably within the set range, avoiding problems such as displacement or detachment caused by construction disturbance or external force interference. Construction personnel can flexibly select multiple sets of fastening components 30 according to the actual shape, installation height and stress distribution requirements of the pre-embedded steel bars 10 of the structural column, and precisely adjust their distribution position on the flexible splicing plate 20. Especially when multiple fastening components 30 are used together, balanced control of overall force can be achieved, avoiding problems such as slat warping, loosening, or protective failure caused by improper fixing positions. Compared with traditional fixed fastening methods, the sliding adjustment structure is more suitable for the varied assembly requirements in actual construction scenarios. It not only optimizes the installation process and significantly improves construction efficiency, but also enhances the fit and stability of the protective structure. In addition, this sliding limiting structure retains a high degree of reusability while meeting structural strength and protective performance requirements. After construction, the fastening component 30 can be quickly disassembled and used for other structural column protection work, reducing material waste, lowering maintenance and replacement costs, and improving the overall economic efficiency and sustainable application value of the device.

[0051] Reference Figure 7 As shown, in an optional embodiment of this utility model, a limiting slot 341 is provided on the limiting member 34, and the limiting slot 341 is engaged with the flexible adhesive strip 22.

[0052] Specifically, by creating a limiting slot 341 on the limiting member 34 and engaging the limiting slot 341 with the flexible rubber strip 22, the design of the limiting slot 341 provides a clear positioning interface for the slide rod 33. This allows the slide rod 33 to be directly positioned by the limiting member 34 and the flexible rubber strip 22 during installation, eliminating the need for additional bolts, welding, or adhesive bonding. This simplifies the installation process and saves construction time, making it particularly suitable for building environments with frequent on-site installations and high demand for disassembly and replacement. Secondly, combining the slot structure of the limiting member 34 with the flexible rubber strip 22 not only achieves precise stopping and limiting at both ends of the slide rod 33, but also provides a certain amount of buffering and rebound force through the flexible covering and elastic recovery characteristics of the flexible rubber strip 22. This effectively prevents the slide rod 33 from shifting or loosening when subjected to external disturbances such as vibration, pulling, or thermal expansion and contraction, enhancing the durability and reliability of the overall structure under long-term service. Furthermore, this coordinated approach of "limiting latch 341 and flexible adhesive strip 22" makes the installation and disassembly of the slide bar 33 more flexible and reusable. It allows construction personnel to flexibly adjust and quickly replace the position and quantity of the fastening components 30 according to on-site covering requirements, improving project adaptability and construction efficiency. In summary, the combined design of the limiting latch 341 and flexible adhesive strip 22 not only achieves precise limiting and stable locking of the slide bar 33, but also significantly optimizes the operability, safety, and sustainability of the flexible splicing plate 20 during assembly. This is one of the key details that enhances the overall performance and application value of the protective device.

[0053] Furthermore, the limiting member 34 and the sliding rod 33 are typically connected by threads to ensure reliable connection and force transmission between them. The specific structural form of the limiting slot 341 can be flexibly selected according to application requirements: on the one hand, the limiting slot 341 can be formed directly by opening a matching slot on the body of the limiting member 34; on the other hand, it can also be constructed by setting two limiting baffles at intervals on the body of the limiting member 34 to achieve clamping of the flexible adhesive strip 22 and positioning of the sliding rod 33. To further improve adaptability and versatility, it is preferable to set adjustable-gap movable limiting baffles on the body of the limiting member 34, so that the size range of the limiting slot 341 can be adaptively adjusted according to the actual bending state or different specifications of the flexible adhesive strip 22, thereby effectively avoiding assembly interference or unstable engagement caused by changes in the size of the adhesive strip. This adjustable structural design not only enhances the structural compatibility and adaptability of the limiting components, but also improves the practicality and reliability of the system in complex construction environments, further highlighting the ingenuity of the present invention in its detailed design and its wide applicability in engineering applications.

[0054] Reference Figure 7 and Figure 8As shown, in an optional embodiment of the present invention, a screw hole 312 extending through to the sliding hole 311 is provided on the outer wall of the abutment 31. A fastening bolt 35 is provided on the screw hole 312. The fastening bolt 35 is used to abut against the sliding rod 33 to limit the fixed position of the abutment 31.

[0055] Specifically, by opening a threaded hole 312 through the sliding hole 311 on the outer wall of the supporting member 31, and setting an adjustable fastening bolt 35 in the threaded hole 312, the stability and safety of the fastening assembly 30 during use are further improved. Specifically, the fastening bolt 35 can be spirally pushed along the threaded hole 312, so that the front end of the fastening bolt 35 forms a reliable abutting fit with the surface of the sliding rod 33, thereby effectively restricting the free sliding of the supporting member 31 along the direction of the sliding rod 33, achieving precise positioning and adjustable locking of the supporting member 31. The fastening bolt 35 structure provides an additional mechanical limiting means for the positioning of the supporting member 31, allowing the supporting member 31 to be locked "point-to-point" by tightening the bolt after installation. This effectively prevents slippage, misalignment, or even detachment during construction vibration, impact, or transportation due to the smoothness or uneven force on the sliding rod 33, enhancing the overall structural stability and reliability.

[0056] Furthermore, this structure is particularly well-suited to address the issue of thermal expansion and contraction that the flexible splicing panel 20 may encounter in complex construction environments. Since changes in ambient temperature can cause minor dimensional adjustments or gap changes in components such as the protective strips 21 and sliding rods 33, if the retaining member 31 is not securely positioned, it is highly susceptible to sliding or loosening due to temperature variations. The bolt structure provides rigid restraint, ensuring close contact and relative position between the retaining member 31 and the sliding rod 33 even when temperature changes cause material expansion and contraction, thus guaranteeing the long-term stable operation of the fastening assembly 30. The bolt adjustment method is simple to operate and highly reusable. Construction personnel can flexibly adjust the position of each retaining member 31 according to different coverage locations and stress requirements, achieving precise assembly and personalized protection layouts. It also facilitates future maintenance, disassembly, or replacement, improving the system's engineering adaptability and sustainable performance. In summary, the screw holes 312 and matching fastening bolts 35 on the outer wall of the supporting member 31 not only improve the anti-slip capability and construction safety of the fastening assembly 30, but also effectively address the risk of structural loosening caused by environmental temperature changes. This is a key structural detail that ensures the flexible splicing panel 20 is stable, reliable, and well protected in practical applications.

[0057] Reference Figure 8 As shown, in an optional embodiment of the present invention, the supporting member 31 has a limiting groove 313 on the side near the protective strip 21, and the opening of the limiting groove 313 gradually extends in a direction perpendicular to the arrangement direction of the protective strip 21.

[0058] Specifically, by creating a limiting groove 313 on the side of the abutment 31 near the protective strip 21, the limiting groove 313 forms a mechanical fixation similar to an interlocking action with the protective strip 21, allowing the abutment 31 to be firmly held against the side of the protective strip 21, effectively preventing its lateral movement in the horizontal direction. This mechanical interlocking not only reduces reliance on the elastic connector 32, avoiding the risk of loosening caused by uneven force or material aging of the elastic connector 32, but also greatly improves the stability and durability of the overall fastening structure, ensuring the reliability of the protective device during long-term use. The coordinated action of the limiting groove 313 and the fastening screw in the vertical position achieves multi-dimensional precise positioning of the abutment 31. The fastening screws are responsible for locking and fixing in the vertical direction, while the limiting groove 313 provides guidance and constraint in the horizontal direction, making it difficult for the supporting member 31 to shift when subjected to construction vibration, external impact, or temperature changes. This ensures a tight fit and overall stability between the protective strip 21 and the fastening assembly 30, further improving the device's anti-disturbance performance. Simultaneously, the limiting groove 313 design also considers ease of disassembly and maintenance. Since the groove opening is perpendicular to the arrangement direction of the protective strip 21, the supporting member 31 can be quickly disassembled by slightly sliding or lifting it in a specific direction, without damaging the structure or using complex tools. This easy disassembly feature not only optimizes the on-site installation and commissioning process but also facilitates subsequent maintenance, replacement, and adjustment work, greatly improving construction efficiency and operational flexibility. Therefore, the ingenious combination of the limiting groove 313 and the fastening screws achieves stable limiting and firm fixing of the supporting member 31 in multiple directions, effectively preventing displacement and loosening while also ensuring ease of operation and high efficiency of maintenance. This becomes a key technical highlight for improving the overall performance and construction practicality of the fastening assembly 30.

[0059] Reference Figure 8 As shown, in an optional embodiment of this utility model, the limiting groove 313 is any one of a wedge-shaped groove, an arc-shaped groove, or a square groove.

[0060] Specifically, the limiting groove 313 can adopt any of the structural forms of wedge groove, arc groove or square groove. When the limiting groove 313 of different shapes realizes the mechanical interlocking and fixing of the protective strip 21, it embodies different structural advantages and mechanical principles based on its unique geometric characteristics, thereby meeting diverse installation requirements and stress environment.

[0061] First, the wedge-shaped groove achieves a "self-locking" effect through its gradually narrowing cross-section. When the retaining member 31 is inserted into the wedge-shaped groove, the friction and lateral pressure between the groove wall and the protective strip 21 gradually increase with the increase in insertion depth, thus forming a strong locking effect. This design not only improves the bonding strength between the retaining member 31 and the protective strip 21, but also effectively prevents loosening caused by vibration, temperature changes, or load fluctuations, ensuring the long-term stability of the structure. The wedge-shaped groove is particularly suitable for placement at the corners or connection positions of the protective strip 21, where these areas typically bear large local stresses. The wedge structure can disperse stress concentration through gradual pressure application, reducing the risk of fatigue failure. Second, the curved groove adopts a groove wall design with a curved transition, making the stress distribution more uniform and avoiding stress concentration at sharp corners. This structure, with its smooth curved shape, can alleviate local stress peaks at the connection interface under dynamic loads, improving the fatigue resistance and impact resistance of the mechanical connection. Furthermore, the flexible geometry of the arc-shaped groove makes the insertion and removal process smoother, reducing wear and damage during installation. It is suitable for critical connection parts of the protective strip 21 or for applications requiring some buffering deformation. Finally, the square groove structure, with its simple straight-line boundaries and clear geometric contours, provides a precise and stable positioning reference. This structure is easy to manufacture, especially suitable for mass production and standardized manufacturing, enabling rapid and efficient assembly. The square groove is typically used to position the retainer 31 in the plane of a single protective strip 21, using right-angled edges to form a clear mechanical stop, preventing the retainer 31 from slipping horizontally. Although its locking force is not as progressively tightening as wedge-shaped or arc-shaped grooves, its ease of manufacturing and positioning accuracy make it the preferred structure for many applications.

[0062] Therefore, the design of the limiting groove 313 is based on its unique mechanical principles and geometric shape. Through reasonable selection, it can take into account connection strength, stress distribution, ease of installation, and durability. Depending on the shape of the structural column, stress conditions, and assembly requirements in the actual project, wedge-shaped grooves, arc-shaped grooves, or square grooves can be flexibly adopted to achieve the optimal effect of mechanical interlocking fixation, thereby improving the overall performance and construction efficiency of the protective device.

[0063] Reference Figure 8 As shown, in an optional embodiment of this utility model, the groove width of the limiting groove 313 is greater than the width of the protective strip 21.

[0064] Specifically, the groove width of the limiting groove 313 is designed to be greater than the width of the protective strip 21, ensuring that the protective strip 21 can be smoothly and unobstructedly inserted into the limiting groove 313. This avoids installation difficulties or jamming caused by an excessively narrow groove, thereby improving assembly efficiency and ease of construction. Secondly, the wider groove provides the protective strip 21 with a certain amount of room to move within the groove, allowing it to adjust its position appropriately, buffering thermal expansion and contraction and minor deformations generated during construction, effectively reducing structural stress concentration and the risk of loosening or damage to the connection caused by deformation. In addition, the wider groove design can also absorb external impacts and vibrations to a certain extent, enhancing the overall vibration resistance of the connection and further ensuring the stability and durability of the protective device. In summary, the design of the limiting groove 313 being wider than the protective strip 21 not only optimizes the installation process but also significantly improves the adaptability and service life of the structure, meeting the needs of efficient, safe, and sustainable engineering applications.

[0065] It should be noted that the groove direction of the limiting groove 313 extends gradually perpendicular to the arrangement direction of the protective strips 21, that is, the groove is arranged continuously along the length direction of the protective strips 21 to guide the protective strips 21 into the limiting groove 313. The statement that "the width of the limiting groove 313 is greater than the width of the protective strips 21" refers to the dimension of the groove parallel to the arrangement direction of the protective strips 21, that is, the opening spacing measured along the width direction of the protective strips 21. It should be understood that the arrangement direction of the protective strips 21 is set according to their width direction, that is, multiple protective strips 21 are arranged side by side in the width direction to form the overall flexible splicing plate 20. It is worth mentioning that in this structure, the width of the protective strips 21 is less than their length, which facilitates linear arrangement and interlocking assembly, and also provides appropriate tolerance space for the limiting groove 313 in the width direction, further optimizing the ease of installation and connection stability. The above structural design facilitates the insertion of the protective strip 21 into the limiting groove 313 to achieve the engagement and fixation of the abutment 31. It also ensures that the groove provides sufficient insertion clearance or locking structure in its width direction. This design, combined with the actual size and installation direction of the protective strip 21, effectively improves the insertion accuracy and structural stability. While meeting the requirements of flexible assembly, it also enhances the system's resistance to detachment and deformation under stress. It is one of the key technical supports for achieving assembly efficiency and structural reliability.

[0066] Reference Figure 9 As shown, in an optional embodiment of the present invention, the elastic connector 32 has a plurality of fixing holes 321 through it, and the abutment 31 is provided with a fixing member 36, which passes through the fixing holes 321 to fix the elastic connector 32 and the abutment 31.

[0067] Specifically, the cooperation between the fastener 36 and the fixing hole 321 forms a clear connection channel, greatly simplifying the assembly process between components and avoiding cumbersome or irreversible connection methods such as gluing and welding, effectively improving installation convenience and maintenance efficiency. Secondly, the multiple fixing holes 321 provide flexible installation position selection for the elastic connector 32, helping to adjust the connection position according to actual usage needs and enhancing the adaptability of the structure, especially suitable for scenarios with dimensional tolerances or curved surface splicing requirements. Furthermore, the fastener 36 forms a mechanically stable connection after passing through the fixing hole 321, ensuring connection strength and effectively resisting the risk of pull-out due to external loads, vibration, or frequent folding, significantly improving the overall structural stability and durability. In addition, this structure facilitates the quick disassembly and replacement of the elastic connector 32, simplifying later maintenance or replacement of consumable parts, reducing system maintenance costs, and extending service life.

[0068] In terms of material selection, the flexible connector 32 typically uses flexible materials with high elasticity, excellent resilience, and good fatigue resistance, such as rubber strips or thermoplastic elastomers (e.g., TPU). These materials not only provide necessary buffering and deformation absorption during installation, conforming to assembly tolerances between components and avoiding stress concentration, but also withstand various combined loads such as tension, bending, and shear during actual use, while effectively adapting to thermal expansion and contraction caused by environmental temperature differences. Compared to traditional rigid connectors, the flexible connector 32 provides a certain degree of flexibility while ensuring connection strength, significantly reducing problems such as structural loosening, fastener detachment, or damage to the protective strip 21 caused by rigid connections, thereby greatly improving the stability, safety, and adaptability of the entire structural system.

[0069] To further meet the performance requirements of the device in practical engineering applications, which involve repeated installation, disassembly, and reuse, the elastic connector 32 has also undergone targeted optimization in its structural design. In particular, the multiple fixing holes 321 penetrating the connector are prone to tearing, deformation, or fatigue damage due to repeated insertion and removal of the fixing member 36 under long-term use or high-frequency disassembly and assembly conditions. To address this issue, a metal protective layer is preferably provided on the inner wall of the fixing holes 321, such as a metal bushing, an embedded metal ring, or a built-in metal ring for reinforcement. This metal protective layer not only significantly improves the tensile strength and tear resistance of the fixing holes 321 under stress, but also effectively resists wear caused by repeated contact between the fixing member 36 and the hole wall, ensuring the dimensional stability and service life of the connection. Furthermore, the introduction of the metal protective layer further improves the reliability of the connector in complex environments, such as humidity, high temperature, dust, or vibration, ensuring that the structure maintains good functionality and connection stability during long-term operation. In summary, the flexible connector 32 achieves an organic unity of flexibility and structural stability through the selection of flexible materials and the reinforcement of structural details. It not only effectively improves assembly efficiency and construction convenience, but also provides a solid guarantee for the long-term stable operation and sustainable use of the protective device.

[0070] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model by those skilled in the art should be included within the scope of protection of this utility model.

Claims

1. A protective device for embedded reinforcing bars in structural columns, characterized in that, The device includes a flexible splicing plate for surrounding the outside of the pre-embedded reinforcing bar and at least one fastening assembly disposed on the flexible splicing plate. The flexible splicing plate includes a plurality of uniformly arranged and movable protective strips in pairs. The fastening assembly includes a plurality of abutting members spaced apart on the outer wall of the flexible splicing plate and a plurality of elastic connecting members corresponding to the abutting members. The abutting members abut against the outer wall of the protective strips. The plurality of abutting members and the plurality of elastic connecting members are connected in a ring-like alternating manner along the arrangement direction of the protective strips to fasten the plurality of protective strips to the pre-embedded reinforcing bar.

2. The structural column embedded steel reinforcement protection device according to claim 1, characterized in that, The flexible splicing panel also includes two flexible rubber strips respectively disposed at both ends of the protective strips. The flexible rubber strips are provided with insertion grooves, and the ends of the plurality of protective strips are respectively inserted into the insertion grooves on the two flexible rubber strips.

3. The protective device for embedded steel bars in structural columns according to claim 2, characterized in that, The flexible splicing plate is also provided with a flexible reflective film. The flexible reflective film is attached to the outer wall of the multiple protective strips along the arrangement direction of the protective strips, and the two ends of the flexible reflective film are respectively embedded in the insertion grooves on the two flexible adhesive strips.

4. The protective device for embedded steel bars in structural columns according to claim 3, characterized in that, The fastening assembly further includes multiple sliding rods corresponding to the abutment and limiting members respectively disposed at both ends of the sliding rods. The limiting members are disposed on the protective strip. The abutment has a sliding hole adapted to the sliding rod, and the sliding rod passes through the sliding hole so that the abutment slides along the outer wall of the protective strip.

5. The protective device for embedded reinforcing bars in structural columns according to claim 4, characterized in that, The limiting member has a limiting slot, which is engaged with the flexible rubber strip.

6. The protective device for embedded steel bars in structural columns according to claim 4, characterized in that, The outer wall of the abutment is provided with a threaded hole that extends through the sliding hole. A fastening bolt is provided in the threaded hole. The fastening bolt is used to abut against the sliding rod to limit the fixed position of the abutment.

7. The protective device for embedded steel bars in structural columns according to claim 4, characterized in that, The supporting member has a limiting groove on the side near the protective strip, and the opening of the limiting groove gradually extends in a direction perpendicular to the arrangement direction of the protective strip.

8. The protective device for embedded steel bars in structural columns according to claim 7, characterized in that, The limiting groove is any one of a wedge-shaped groove, an arc-shaped groove, or a square groove.

9. The protective device for embedded reinforcing bars in structural columns according to claim 8, characterized in that, The width of the limiting groove is greater than the width of the protective strip.

10. The protective device for embedded reinforcing bars in structural columns according to claim 1, characterized in that, The elastic connector has multiple through holes, and the abutment is provided with a fixing member. The fixing member passes through the fixing holes to fix the elastic connector and the abutment.

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