A CFRP thin-walled high-pier column construction device and method thereof

Abstract

The application relates to a CFRP thin-wall high-pier column construction device and a method thereof, which comprises a positioning mechanism, a supporting and moving mechanism, a traction mechanism and a glue brushing and pressing mechanism. The positioning mechanism comprises an upper positioning plate, a lower winding roller and a positioning rope. The upper positioning plate is fixed to the upper part of the pier column, and the lower winding roller is fixed to the lower part. The supporting and moving mechanism comprises an inner frame, an outer frame, a sliding block and a supporting frame. The sliding block is adapted to be sleeved on the positioning rope. The inner frame and the outer frame are correspondingly fixed to the inner and outer sides of the sliding block. Corresponding through holes are arranged at the lower parts of the inner frame and the outer frame. The glue brushing and pressing mechanism comprises a pressing roller, a glue brushing roller, a limiting roller, a glue tank and a positioning wheel. The pressing roller and the positioning wheel are correspondingly arranged at the upper part and the lower part of the inner frame. The limiting roller, the glue brushing roller and the glue tank are fixed to the middle region of the inner frame. A glue brushing gap is formed between the limiting roller and the glue brushing roller. The application does not need manual intervention. The main body construction structure can be driven to move along the positioning rope by the traction mechanism, the construction is performed from top to bottom, and the construction difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to a CFRP thin-walled high pier construction device and method. Background Technology

[0002] Double thin-walled piers are a commonly used type of pier for large and medium-span highway bridges in my country at present. Their structural feature is that there are two parallel pier walls at the pier location that are hinged or rigidly connected to the main beam.

[0003] Double thin-walled piers are the main type of pier for long-span rigid frame bridges. Because of their high longitudinal bending stiffness and low lateral stiffness, they can meet the safety requirements during construction and effectively reduce secondary internal forces caused by temperature, concrete creep, and pier displacement, thus having a wide range of applications.

[0004] Carbon fiber composites, as a high-performance, multifunctional advanced composite material, can be used as structural and functional building materials. With breakthroughs in production and processing technologies, the cost of carbon fiber composites has decreased, leading to a huge demand for them in the construction industry. Despite their high load-bearing capacity, light weight, and high strength, carbon fiber composites also possess excellent mechanical and physical properties, meeting the requirements of building structures and aligning with the development trend of ecological civilization.

[0005] A key application of CFRP (Cemented Reinforced Polymer) in reinforcing concrete structures is the use of CFRP sheets to strengthen concrete columns. CFRP sheets effectively constrain the lateral deformation of concrete columns, thereby improving their load-bearing capacity and ductility. They are also used in the construction of seismic-resistant structures. Currently, the existing technology for placing CFRP sheets on piers and columns relies on manual construction, which is cumbersome, inefficient, and inconvenient. Therefore, it is necessary to research a CFRP thin-walled high pier column construction device. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a CFRP thin-walled high pier construction device and method, which effectively solves the problems of existing CFRP sheet construction methods being limited, having low construction efficiency, and being cumbersome to operate.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a CFRP thin-walled high pier construction device, comprising a positioning mechanism, a support and movement mechanism, a traction mechanism, and a glue application and pressing mechanism. The positioning mechanism comprises an upper positioning plate, a lower winding roller, and a positioning rope. The upper positioning plate is fixed to the upper part of the pier, the lower winding roller is fixed to the lower part, and is connected to a winch. The positioning rope is arranged vertically, with its upper end fixed to the upper positioning plate and its lower end wound around the lower winding roller.

[0008] The supporting moving mechanism includes an inner frame, an outer frame, a slider, and a support frame. The slider is adapted to be mounted on a positioning rope and can slide along the positioning rope. The inner frame and the outer frame are fixed to the inner and outer sides of the slider respectively, and corresponding through holes are provided at the lower position of the inner frame and the outer frame.

[0009] The support frame is fixed to the upper part of the outer frame and extends outward to support the CFRP roller; the traction mechanism includes a guide wheel, a traction rope and a drive wheel, the two ends of the traction rope are fixed to the outer frame, the guide wheel and the drive wheel are arranged inside the traction rope, and the drive wheel is connected to the drive motor.

[0010] The glue-applying and pressing mechanism includes a pressing roller, a glue-applying roller, a limiting roller, a glue hopper, and a positioning wheel. The pressing roller and the positioning wheel are respectively arranged on the upper and lower parts of the inner frame, and the two wheels are on the same plane. The limiting roller, the glue-applying roller, and the glue hopper are also fixed in the middle area of ​​the inner frame. The glue hopper supplies glue to the glue-applying roller, and a glue-applying gap is formed between the limiting roller and the glue-applying roller.

[0011] Furthermore, at least two positioning ropes are provided, and each slider is provided in a one-to-one correspondence with a positioning rope, with a sliding hole in its middle that is adapted to the positioning rope, and the positioning rope is fitted into the sliding hole.

[0012] Furthermore, the support frame is provided with multiple support seats, and the through hole corresponds to the material feeding part of the support seat.

[0013] Furthermore, the glue hopper is located diagonally above and to the outside of the glue brushing roller, and a feeding head inclined towards the side wall of the glue brushing roller is provided at the lower part of the glue brushing roller, with the feeding head in contact with the outer wall of the glue brushing roller.

[0014] Furthermore, a receiving hopper is provided at the lower part of the inner frame, and the glue brushing roller is fixed to the upper part or side of the receiving hopper by a bracket.

[0015] Furthermore, the glue hopper is located at the bottom of the glue brushing roller, and the lower part of the glue brushing roller is inside the glue hopper, and the glue is obtained from the glue hopper when rotating.

[0016] Furthermore, a side plate is provided on the inner side of the slider, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve, a sleeve rod, a spring, and a limiting sleeve. The sleeve is fixed on the side plate, the sleeve rod is fixed on the inner frame, and a spring seat is provided at the bottom of the sleeve rod. A spring is provided between the sleeve seat and the bottom of the sleeve. The limiting sleeve is threadedly connected to the sleeve rod, and an outer limiting platform is provided at its lower part. An inner limiting platform is provided on the outer wall of the sleeve. The inner limiting platform abuts against the outer limiting platform, thereby forming a soft elastic support between the inner frame and the side plate.

[0017] Furthermore, a side plate is provided on the outer side of the slider, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve, a rod, and a locking wire. The sleeve is fixed on the side plate, one end of the rod is fixed on the inner frame, and the other end is fitted inside the sleeve. It can be locked by a locking mechanism arranged through the side wall of the sleeve, providing adjustable rigid support between the side plate and the inner frame.

[0018] Furthermore, the positioning wheel is fixed to the inner frame by a telescopic rod. The upper part of the inner frame is provided with a shaft bracket, and the shaft bracket is provided with a flat hole. Both ends of the pressing roller are provided with shaft seats, and the outer side of the shaft seats is provided with a locking shaft. The locking shaft is fitted into the flat hole and can be locked by a locking wire arranged on the outer side of the locking shaft.

[0019] A construction method for CFRP thin-walled high pier columns includes the following steps;

[0020] Step 1: Clean and smooth the surface of the pier column.

[0021] Clean up any missing or broken parts on the surface of the pier, check for steel reinforcement corrosion, and repair and restore the missing parts of the pier after chiseling, cleaning and exposing the steel reinforcement with epoxy mortar higher than the original component to achieve a smooth surface.

[0022] Step 2: Grinding, cleaning, and drying.

[0023] Grind the surface of the pier column to remove surface laitance, oil and impurities until the new concrete structure is exposed. Then clean the ground pier column surface and let it dry completely.

[0024] Step 3, apply base coat.

[0025] After mixing the primer evenly according to the ratio, apply the primer to the surface of the pier column and perform a second leveling.

[0026] Step 4, Adhesive application

[0027] Position the upper positioning plate and the lower winding roller, and ensure the tension of the positioning rope. At this time, the slider is on the positioning rope. The CFRP roller is installed on the support frame. The CFRP sheet is passed through the through hole and clamped between the limiting roller and the glue brushing roller. Finally, it is squeezed and arranged between the pressing roller and the pier. Then, the slider is driven to move up and down along the positioning rope by the traction mechanism. During the movement, the CFRP sheet is pasted on the surface of the pier.

[0028] Step 5, Protection

[0029] After reinforcement, the CFRP sheet is protected with plaster. Before the resin on the carbon fiber surface cures, a layer of dry coarse sand is sprinkled on it, and then plastering is taken for protection.

[0030] The beneficial effects of the above technical solution are as follows: This invention addresses the problem that existing CFRP sheet construction methods have low construction efficiency and cannot meet people's needs. This embodiment provides a construction device that facilitates CFRP sheet construction. In terms of specific structure, an inner frame and an outer frame are used as the basic structure. A slider is arranged between the inner frame and the outer frame, and the two frames are connected. The slider can slide up and down along the positioning rope, and the tension of the positioning rope forms a vertical positioning track. The main construction structure is moved up and down along the positioning rope by a traction mechanism.

[0031] In terms of the specific implementation structure, an external frame is used as the basis, and a support frame is arranged on the external frame. The support frame mainly serves as the installation structure for the sheet roller. It is arranged on the support frame and can rotate on the support frame. The main body of the sheet passes through the gap between the glue brush roller and the limiting roller along the through hole, and finally passes through the pressing roller and is tightly arranged on the side of the pier. It is worth noting that in the implementation of this invention, the limiting roller and the pressing roller are both on the outside of the sheet, while the glue brush roller is on the inside of the sheet. After the end of the sheet is glued, a fixed section is formed at its end. As the main construction structure is lowered, the sheet can be gradually glued to the surface of the pier.

[0032] This invention features a novel structure that enables rapid application of CFRP sheets to the exterior of piers without manual intervention. A traction mechanism drives the main construction structure along positioning ropes, allowing for top-to-bottom construction. The process is convenient, yields excellent bonding results, and significantly simplifies the CFRP sheet application process, reducing construction difficulty. It provides a user-friendly device for reinforcing pier structures, offering greater convenience to the public. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the side view structure in the middle;

[0035] Figure 3 for Figure 1 A diagram of the structure viewed from below;

[0036] Figure 4 for Figure 1 A schematic diagram of the left-side view structure in the image;

[0037] Figure 5 for Figure 1 A schematic diagram of the right-side view structure in the diagram;

[0038] Figure 6 This is a schematic diagram of the positioning mechanism;

[0039] Figure 7 This is a schematic diagram of the traction mechanism.

[0040] Figure 8 This is a schematic diagram of the wheel adjustment structure;

[0041] Figure 9 This is a schematic diagram of a soft, elastic support structure.

[0042] Figure 10 This is a schematic diagram of a rigidly supported structure.

[0043] Figure 11 This is a structural diagram of multiple construction devices.

[0044] Reference numerals in the attached diagram: 1 is the upper positioning plate, 2 is the positioning rope, 3 is the lower winding roller, 4 is the winch, 5 is the slider, 6 is the outer frame, 7 is the inner frame, 8 is the support frame, 9 is the through hole, 10 is the pressing roller, 11 is the glue brushing roller, 12 is the limiting roller, 13 is the glue hopper, 14 is the bracket, 15 is the receiving hopper, 16 is the positioning wheel, 161 is the telescopic rod, 17 is the CFRP roller, 18 is the CFRP sheet, 19 is the guide wheel, 20 is the support column, 21 is the connecting plate, 22 is the flat hole, 23 is the locking shaft, 24 is the locking wire, 25 is the sleeve, 26 is the sleeve rod, 27 is the locking wire, 28 is the sleeve, 29 is the sleeve rod, 30 is the limiting sleeve, 31 is the outer limiting platform, 32 is the inner limiting platform, and 33 is the spring. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0046] Example 1: This example aims to provide a CFRP thin-walled high pier construction device, mainly used to attach CFRP sheets to the outer surface of the pier. Existing attachment methods are generally manual, which is cumbersome, inefficient, and inconvenient. Therefore, this example provides an on-site construction device that can attach rolls of CFRP fabric sheets to the outer surface of the pier.

[0047] Structurally, such as Figure 1-6 The image shows a CFRP thin-walled high pier construction device, including a positioning mechanism, a support and movement mechanism, a traction mechanism, and an adhesive application and pressing mechanism. The positioning mechanism is mainly used to form a positioning foundation, providing a base for the movement of the main construction structure. Structurally, it is as follows... Figure 1 and Figure 6The positioning mechanism, as shown, includes an upper positioning plate 1, a lower winding roller 3, and a positioning rope 2. The upper positioning plate 1 is fixed to the upper part of the pier, and the lower winding roller 3 is fixed to the lower part and connected to a winch. The positioning rope 2 is arranged vertically. A hook or fixing seat is provided on the upper positioning plate 1. The upper end of the positioning rope 2 is fixed to the hook or fixing seat on the upper positioning plate 1, and its lower end is wound around the lower winding roller 3. The tightening and self-locking of the winch 4 ensures the tightness of the positioning rope 2 and ensures that the positioning rope 2 is arranged vertically, that is, parallel to the outer surface of the pier.

[0048] In this embodiment, at least two positioning ropes 2 are provided, and the sliders 5 are provided one-to-one with the positioning ropes 2, with a sliding hole in the middle that is adapted to the positioning ropes 2, and the positioning ropes 2 are fitted into the sliding holes; the support frame 8 is provided with multiple support seats, and the through holes 9 correspond to the material feeding parts of the support seats.

[0049] In this embodiment, three positioning ropes 2 are used for construction. The slider 5 is set with two groups, upper and lower, with three in each group. At the same time, multiple support seats are set on the support seat, which allows multiple CFRP rollers to be arranged at intervals.

[0050] The supporting moving mechanism includes an inner frame 7, an outer frame 6, a slider 5, and a support frame. The slider 5 is adapted to be mounted on the positioning rope 2 and can slide along the positioning rope 2. The inner frame 7 and the outer frame 6 are fixed on the inner and outer sides of the slider 5 respectively, and corresponding through holes 9 are provided at the lower position of the inner frame 7 and the outer frame 6. In this embodiment, the inner frame is close to the pier 20, and the outer frame 6 is far away from the pier 20. The inner frame 7 and the outer frame 6 can not only connect the upper and lower sliders 5 into one unit, but also serve as the installation platform for the main structure.

[0051] In the specific installation structure, such as Figure 1-3 As shown, the support frame 8 is fixed to the upper part of the outer frame 6. In terms of specific structure, the support frame 8 is arranged inclined upward and outward, and a support seat for supporting the CFRP roller 17 extends from its end. The CFRP roller 17 has a rotating shaft, which is rotatably arranged on the support seat, so that the CFRP roller 17 can be assembled on the support frame, and the CFRP sheet 18 is released when rotating.

[0052] like Figure 7 As shown, the traction mechanism includes a guide wheel 34, a traction rope 37, and a drive wheel 35. The two ends of the traction rope 37 are fixed to the outer frame 6. The guide wheel 34 and the drive wheel 35 are arranged inside the traction rope 37, and the drive wheel 35 is connected to the drive motor 36. In this embodiment, the guide wheel 34 and the drive wheel 35 are used to form a rectangular area of ​​the traction rope 37. The guide wheel 34 is used for guidance and is powered by the drive wheel 35. By driving the drive motor to rotate forward and reverse, the outer frame connected to the traction rope can move up and down.

[0053] The glue-applying and pressing mechanism includes a pressing roller 10, a glue-applying roller 11, a limiting roller 12, a glue hopper 13, and a positioning wheel 16. The pressing roller 10 and the positioning wheel 16 are respectively arranged on the upper and lower parts of the inner frame 7, and the two wheels are on the same plane. The limiting roller 12, the glue-applying roller 11, and the glue hopper 13 are also fixed in the middle area of ​​the inner frame 7. The glue hopper 13 supplies glue to the glue-applying roller. A glue-applying gap is formed between the limiting roller 12 and the glue-applying roller 11. During implementation, the glue hopper 13 is located obliquely above the outer side of the glue-applying roller. The lower part of the glue-applying roller 11 is provided with a feeding head that is inclined towards the side wall of the glue-applying roller. The feeding head is in contact with the outer wall of the glue-applying roller. At the same time, a receiving hopper 15 is provided in the lower part of the inner frame. The glue-applying roller 11 is fixed to the upper part or side of the receiving hopper 15 by a bracket 14 to facilitate the collection of fallen glue.

[0054] During implementation, construction devices are arranged on the side walls of the pier 20. The upper positioning plates 1 of the construction devices are connected together by the connecting plates 21, so that the side of the pier 20 can be constructed simultaneously, which improves construction efficiency.

[0055] This embodiment uses positioning rope 2 as a base, moving up and down along positioning rope 2, and limiting the main pressing and gluing structure between positioning rope 2 and the outer wall of the pier. In order to adjust this gap and control the pressing intensity, this embodiment fixes the positioning wheel to the inner frame through a telescopic rod. The telescopic rod 161 can be a sleeve, sleeve and top screw structure, or other telescopic adjustment structure, such as a reverse thread connection structure. The upper part of the inner frame 7 is provided with a shaft frame, and the shaft frame is provided with a flat hole 22. The two ends of the pressing roller 10 are provided with shaft seats, and the outer side of the shaft seats is provided with a locking shaft 23. The locking shaft 23 is fitted into the flat hole 22 and can be locked by the locking wire 24 arranged on the outer side of the locking shaft. This structure can adjust the construction gap slightly to ensure that the structure moves smoothly up and down along the space between the pier and positioning rope 2, and ensure the pressing intensity of the pressing roller.

[0056] During construction, this embodiment provides a construction method for CFRP thin-walled high pier columns, which specifically includes the following steps;

[0057] Step 1: Clean and smooth the surface of the pier column.

[0058] Clean up any missing or broken parts on the surface of the pier, check for steel reinforcement corrosion, and repair and restore the missing parts of the pier after chiseling, cleaning and exposing the steel reinforcement with epoxy mortar higher than the original component to achieve a smooth surface.

[0059] Step 2: Grinding, cleaning, and drying.

[0060] Grind the surface of the pier column to remove surface laitance, oil and impurities until the new concrete structure is exposed. Then clean the ground pier column surface and let it dry completely.

[0061] Step 3, apply base coat.

[0062] After mixing the primer evenly according to the ratio, apply the primer to the surface of the pier column and perform a second leveling.

[0063] Step 4, Adhesive application

[0064] Position the upper positioning plate 1 and the lower winding roller 3, and ensure the tension of the positioning rope 2. At this time, the slider 5 is on the positioning rope 2. The CFRP roller is installed on the support frame. The CFRP sheet is passed through the through hole and clamped between the limiting roller and the glue brushing roller. Finally, it is squeezed and arranged between the pressing roller and the pier. Then, the slider 5 is driven to move up and down along the positioning rope 2 by the traction mechanism. During the movement, the CFRP sheet is pasted on the surface of the pier.

[0065] Step 5, Protection

[0066] After reinforcement, the CFRP sheet is protected with plaster. Before the resin on the carbon fiber surface cures, a layer of dry coarse sand is sprinkled on it, and then plastering is taken for protection.

[0067] Example 2 further illustrates another structure of the glue container.

[0068] In this embodiment, the glue hopper is located at the bottom of the glue brushing roller, and the lower part of the glue brushing roller is inside the glue hopper, and the glue is obtained from the glue hopper when it rotates.

[0069] In this embodiment, there is no need to arrange a receiving hopper. The glue hopper is placed at the bottom of the glue brushing roller, and the glue brushing roller is fixed to the upper part of the glue hopper by a bracket. The outer brush roller dips the glue material into the glue hopper.

[0070] Example 3 further illustrates the overall frame structure.

[0071] In this embodiment, as shown... Figure 9 As shown, the inner side of the slider 5 is provided with a side plate, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve 28, a sleeve rod 29, a spring 33, and a limiting sleeve 30. The sleeve 28 is fixed to the side plate, the sleeve rod 29 is fixed to the inner frame, and a spring seat is provided at the bottom of the sleeve rod 29. A spring 33 is provided between the sleeve seat and the bottom of the sleeve. The limiting sleeve 30 is threaded to the sleeve rod 29, and an outer limiting platform 31 is provided at its lower part. An inner limiting platform 32 is provided on the outer wall of the sleeve 28. The inner limiting platform and the outer limiting platform abut against each other under the action of the spring, and separate under the further compression of the spring 33, thereby forming a soft elastic support between the inner frame and the side plate.

[0072] In this embodiment, the spring structure can provide an inward driving force to the inner frame and allow for appropriate adjustment when encountering spacing fluctuations. It also provides adjustable soft elastic support for the inner frame structure, ensuring the pressing strength of the pressing roller on the sheet.

[0073] Example 4 further illustrates the fixing position of the mounting plate.

[0074] Furthermore, a side plate is provided on the inner side of the slider 5, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve 25, a sleeve rod 26 and a locking screw 27. The sleeve 25 is fixed on the side plate, one end of the sleeve rod 26 is fixed on the inner frame 7, and the other end is fitted inside the sleeve 25. It can be locked by a locking screw arranged through the side wall of the sleeve, providing adjustable rigid support between the side plate and the inner frame.

[0075] This embodiment provides a rigid adjustment structure between the side plate and the inner frame, which, in conjunction with the small-amplitude adjustment in Embodiment 1, is used to adjust the construction gap.

Claims

1. A CFRP thin-walled high pier construction device, characterized in that: It includes a positioning mechanism, a support and movement mechanism, a traction mechanism, and a glue application and pressing mechanism. The positioning mechanism includes an upper positioning plate, a lower winding roller, and a positioning rope. The upper positioning plate is fixed to the upper part of the pier, the lower winding roller is fixed to the lower part, and is connected to a winch. The positioning rope is arranged vertically, with its upper end fixed to the upper positioning plate and its lower end wound around the lower winding roller. The supporting moving mechanism includes an inner frame, an outer frame, a slider, and a support frame. The slider is adapted to be mounted on a positioning rope and can slide along the positioning rope. The inner frame and the outer frame are fixed to the inner and outer sides of the slider respectively, and corresponding through holes are provided at the lower position of the inner frame and the outer frame. The support frame is fixed to the upper part of the outer frame and extends outward to support the CFRP roller; the traction mechanism includes a guide wheel, a traction rope and a drive wheel, the two ends of the traction rope are fixed to the outer frame, the guide wheel and the drive wheel are arranged inside the traction rope, and the drive wheel is connected to the drive motor. The glue-applying and pressing mechanism includes a pressing roller, a glue-applying roller, a limiting roller, a glue hopper, and a positioning wheel. The pressing roller and the positioning wheel are respectively arranged on the upper and lower parts of the inner frame, and the two wheels are on the same plane. The limiting roller, the glue-applying roller, and the glue hopper are also fixed in the middle area of ​​the inner frame. The glue hopper supplies glue to the glue-applying roller, and a glue-applying gap is formed between the limiting roller and the glue-applying roller.

2. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: At least two positioning ropes are provided, and each slider is provided in a one-to-one correspondence with a positioning rope. A sliding hole adapted to the positioning rope is provided in the middle of the slider, and the positioning rope is fitted into the sliding hole.

3. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: The support frame is provided with multiple support seats, and the through hole corresponds to the material feeding part of the support seat.

4. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: The glue hopper is located diagonally above and to the outside of the glue brushing roller. The lower part of the glue brushing roller is provided with a feeding head that is inclined towards the side wall of the glue brushing roller and contacts the outer wall of the glue brushing roller.

5. The CFRP thin-walled high pier construction device according to claim 4, characterized in that: A receiving hopper is provided at the lower part of the inner frame, and the glue brushing roller is fixed to the upper part or side of the receiving hopper by a bracket.

6. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: The glue hopper is located at the bottom of the glue brushing roller, and the lower part of the glue brushing roller is inside the glue hopper, and the glue is drawn from the glue hopper when it rotates.

7. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: The slider has a side plate on its inner side, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve, a rod, a spring, and a limiting sleeve. The sleeve is fixed on the side plate, the rod is fixed on the inner frame, and a spring seat is provided at the bottom of the rod. A spring is provided between the rod seat and the bottom of the sleeve. The limiting sleeve is threadedly connected to the rod, and an outer limiting platform is provided at its lower part. An inner limiting platform is provided on the outer wall of the sleeve. The inner limiting platform abuts against the outer limiting platform, thereby forming a soft elastic support between the inner frame and the side plate.

8. The CFRP thin-walled high pier construction device according to claim 1, characterized in that: A side plate is provided on the outer side of the slider, and an adjustment mechanism is provided between the side plate and the inner frame. The adjustment mechanism includes a sleeve, a rod and a locking wire. The sleeve is fixed on the side plate, one end of the rod is fixed on the inner frame, and the other end is fitted into the sleeve. It can be locked by the locking wire arranged through the side wall of the sleeve, providing adjustable rigid support between the side plate and the inner frame.

9. The CFRP thin-walled high pier construction device according to any one of claims 1-8, characterized in that: The positioning wheel is fixed to the inner frame by a telescopic rod. The upper part of the inner frame is provided with a shaft bracket with a flat hole. Both ends of the pressing roller are provided with shaft seats. A locking shaft is provided on the outside of the shaft seat. The locking shaft is fitted into the flat hole and can be locked by a locking wire arranged on the outside of the locking shaft.

10. A construction method for the CFRP thin-walled high pier construction device according to claim 1, characterized in that, Includes the following steps; Step 1: Clean and smooth the surface of the pier column. Clean up any missing or broken parts on the surface of the pier, check for steel reinforcement corrosion, and repair and restore the missing parts of the pier after chiseling, cleaning and exposing the steel reinforcement with epoxy mortar higher than the original component to achieve a smooth surface. Step 2: Grinding, cleaning, and drying. Grind the surface of the pier column to remove surface laitance, oil and impurities until the new concrete structure is exposed. Then clean the ground pier column surface and let it dry completely. Step 3, apply base coat. After mixing the primer evenly according to the ratio, apply the primer to the surface of the pier column and perform a second leveling. Step 4, Adhesive application Position the upper positioning plate and the lower winding roller, and ensure the tension of the positioning rope. At this time, the slider is on the positioning rope. The CFRP roller is installed on the support frame. The CFRP sheet is passed through the through hole and clamped between the limiting roller and the glue brushing roller. Finally, it is squeezed and arranged between the pressing roller and the pier. Then, the slider is driven to move up and down along the positioning rope by the traction mechanism. During the movement, the CFRP sheet is pasted on the surface of the pier. Step 5, Protection After reinforcement, the CFRP sheet is protected with plaster. Before the resin on the carbon fiber surface cures, a layer of dry coarse sand is sprinkled on it, and then plastering is taken for protection.

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