Historic building pier column reinforcing structure

Abstract

The utility model relates to the technical field of ancient building repairing and reinforcing, in particular to an ancient building pier column reinforcing structure which comprises a constraint pipe, core concrete and wrapping concrete, the constraint pipe is annularly arranged on the outer side of an ancient building pier column, the core concrete is filled between the constraint pipe and the pier column, and the wrapping concrete is arranged outside the constraint pipe in a wrapping mode. The device can be used under the condition that an original structure is not disassembled, and damage to the original appearance of the ancient building is reduced; meanwhile, the reinforcing structure can be customized according to the actual situation of the ancient building pier column, and adaptability and flexibility are high; the durability, the stability, the corrosion resistance and the bearing capacity of the reinforced pier column are greatly improved, natural disasters such as earthquakes, fire disasters and wind disasters can be effectively resisted, the problems of wood decay and stone weathering are effectively prevented, the service life of an ancient building is prolonged, the maintenance and replacement frequency caused by structural damage is reduced, and the construction cost is reduced. And the long-term maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ancient building repair and reinforcement, in particular to an ancient building pier column reinforcement structure. Background Art

[0002] Ancient buildings, treasures of human civilization, carry a wealth of historical and cultural information. Their existence and preservation are of great significance to the study of history, culture, art, and architectural techniques. However, due to the long-term effects of natural and human factors, many ancient buildings face serious damage risks. Natural disasters such as earthquakes, floods, mudslides, wind and rain erosion, and insect infestations, accidental factors such as fires and explosions, and human factors such as irrational development have collectively led to severe damage to ancient buildings, including weathering, moisture, peeling, decay, and even structural loosening, wall cracking, tilting, and collapse. Furthermore, the aging of materials such as wood and masonry used in ancient buildings can cause the structures to lose their original strength and stability. This damage not only severely impacts the appearance of ancient buildings but also significantly compromises their safety. Damage to the load-bearing pillars of ancient buildings—wooden or stone—is particularly significant. Damage directly affects the structural stability and safety of the entire building. Therefore, to ensure structural safety, it is often necessary to remove and replace severely damaged pillars entirely using temporary support structures. This labor-intensive process can easily damage the original appearance of the ancient buildings.

[0003] The protection and restoration of ancient building columns must not only restore their original appearance but also enhance their resilience to future natural disasters and man-made damage. Against this backdrop, the demand for ancient building reinforcement and restoration technologies is increasing, particularly for the reinforcement and restoration of wooden and stone columns, which has become a key research topic in the field of ancient building protection. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of damaged ancient building piers in the prior art and to provide an ancient building pier reinforcement structure, which can reinforce and repair damaged ancient building piers, thereby extending their service life and making the structure safer and more reliable.

[0005] The utility model provides a reinforcement structure for ancient building piers, which is used for reinforcing and repairing damaged piers. The piers are wooden or stone columns. The reinforcement structure for the ancient building piers comprises a restraining tube, core concrete and outer concrete. The restraining tube is circumferentially arranged on the outside of the pier, and the core concrete is circumferentially filled between the restraining tube and the pier; the outer concrete is wrapped and arranged on the outside of the restraining tube, and a carved or painted pattern is provided on the outer concrete. The outer concrete is used to simulate and restore the original appearance of the ancient building of the pier.

[0006] The utility model realizes the coordinated repair and reinforcement of the piers of ancient buildings through an innovative triple structure: a restraining tube is arranged circumferentially on the outside of the pier to form a closed skeleton, and core concrete is filled in the gap between the restraining tube and the pier. The radial restraining effect of the restraining tube is used to restrain the lateral expansion of the core concrete, so that it is in a three-dimensional compressive state, ensuring that the core concrete can fully fill the surface cracks of the piers of ancient buildings to achieve the reinforcement of damaged structures, and quickly improve the compressive bearing capacity of the core concrete and the piers. At the same time, under the constraint of the core concrete, the overall reinforcement of the piers of ancient buildings can be achieved, the cross-section of the piers can be increased, and the durability, stability and bearing capacity (such as bending resistance and compressive resistance) of the piers can be improved. Furthermore, the utility model wraps a layer of outer concrete on the outside of the restraining tube. The soil forms a composite constraint, which can, on the one hand, form a secondary constraint on the constraint pipe, core concrete and ancient building piers, further improving the durability and bearing capacity of the ancient building piers, improving the corrosion resistance of the ancient building piers, and effectively resisting the effects of natural disasters such as earthquakes, wind disasters, mudslides, and accidental effects such as fire and explosion, effectively preventing the piers from wood decay or stone weathering, and extending the service life of the ancient building piers. On the other hand, the plasticity of the outer concrete can be used to customize the structural shape of the outer concrete according to the actual structural shape of the ancient building piers. At the same time, by painting or carving on the surface of the outer concrete, the aesthetic value of the ancient building is maintained, and a visual effect basically the same as the original pier can be achieved, reproducing the original style of the ancient building piers.

[0007] The application of the above-mentioned ancient building pier column reinforcement structure can repair and reinforce the ancient building pier columns without demolishing the original structure. It has strong adaptability and flexibility, which is conducive to reducing damage to the original appearance of the ancient building.

[0008] Preferably, the restraining tube is made of steel or fiber composite material for ease of construction. Steel has excellent tensile strength and forms a good bonding interface with both the core concrete and the outer concrete, allowing the combination to better bear external loads. Steel is also weldable, facilitating reinforcement or retrofitting. Fiber composite materials offer both high tensile strength and excellent corrosion resistance, along with lightweight and high strength. Customizable interfaces can be tailored to the curved surfaces of historic building piers, making them particularly suitable for load-reducing reinforcement.

[0009] Preferably, the restraining tubes, core concrete, and outer concrete casing all extend along the length of the pier, with the ends of the outer concrete casing extending to either end of the pier. Compared to segmented reinforcement of the restraining tubes, core concrete, and outer concrete casing, extending the reinforcement structure along the entire length of the pier not only eliminates stress concentration caused by circumferential joints and ensures continuous load transfer, but also creates a complete sculpture base on the outer concrete casing, ensuring a coherent painted pattern, a better visual effect, and a higher degree of historical authenticity.

[0010] Preferably, the cross-sectional shape of the restraining tube is rectangular, circular, elliptical, triangular, hexagonal or octagonal, and other geometric shapes may also be used. The cross-sectional shape of the restraining tube may be consistent with or different from the cross-sectional shape of the original pier column.

[0011] The shape and material of the restraining pipe are not limited to the above examples, and it only needs to form a closed area in the circumferential direction outside the pier column to provide radial restraint for the internal concrete.

[0012] Preferably, the restraining pipe is provided with a grouting hole through which concrete can be filled.

[0013] Preferably, the constraint tube comprises a plurality of constraint units, which are sequentially connected along the axial direction of the pier. The constraint tube can be arranged in layers, which facilitates the layered pouring and vibration of the core concrete and facilitates construction.

[0014] Preferably, a steel cage is incorporated into the outer concrete envelope to enhance structural strength and significantly improve the flexural rigidity of the reinforced pier column. By incorporating the steel cage within the outer concrete envelope, the toughness of the cage can be leveraged to delay brittle failure of the concrete after cracking, creating a composite restraint effect that improves the ductility and seismic resistance of the reinforced pier column. Under repeated loads (such as earthquakes), the cage disperses stress concentrations and reduces the risk of localized concrete collapse. By placing the steel cage in the outer concrete instead of the core concrete, the expanded area of ​​the outer restraint tube and the core concrete of the pier column can be reduced, and the overall cross-sectional area of ​​the ancient building pier reinforcement structure can be reduced, so that the size of the reinforced pier column structure is as close as possible to the pier column structure before reinforcement, resulting in a better visual effect. Through appropriate construction technology (such as concrete component ratio control or vibration technology, etc.), the risk of core concrete and restraint tube degassing can also be effectively reduced (the effect is not much different from that of setting a steel cage), and the radial restraint force provided by the restraint tube is stronger when it is smaller in size, the crack resistance of the core concrete is better, and the overall structural bearing capacity is higher; then, outer concrete of the same thickness is set on the outside of the restraint tube, which not only fully utilizes the advantages of the steel cage, but also significantly reduces the overall size of the reinforced pier column, making the appearance more beautiful and coordinated, the adaptability to working conditions better, and the overall bearing capacity high.

[0015] Preferably, the cross-sectional shape of the steel cage is rectangular or circular, and other geometric shapes may also be used.

[0016] Preferably, the cross-sectional shape of the outer contour of the outer concrete is the same as the cross-sectional shape of the pier.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The reinforcement structure of the ancient building pier provided by the utility model can be carried out without demolishing the original structure, thereby reducing the damage to the original appearance of the ancient building; at the same time, the above-mentioned reinforcement structure can be customized according to the actual situation of the ancient building pier, and has strong adaptability and flexibility; the durability, stability, corrosion resistance and bearing capacity of the reinforced pier are greatly improved, which can effectively resist natural disasters and unexpected situations, and effectively prevent the pier from wood decay or stone weathering, which is conducive to extending the service life of the ancient building pier, reducing the frequency of repair and replacement due to structural damage, and reducing long-term maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a vertical cross-section of the reinforcement structure of the pier column of the ancient building in the embodiment;

[0020] Figure 2 This is a horizontal cross-sectional view of the circular cross-section column repaired in the embodiment;

[0021] Figure 3 This is a horizontal cross-sectional view when repairing a square-section column in an embodiment.

[0022] Markings in the figure: 1- pier column; 2- core concrete; 3- restraining pipe; 4- reinforcement cage; 5- longitudinal reinforcement; 6- stirrups; 7- external concrete. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0024] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians, and do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, they should not be understood as limitations on the present invention.

[0025] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0026] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0027] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0028] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0029] Example

[0030] like Figure 1-Figure 3 As shown, a reinforcement structure for ancient building pier columns is used to reinforce and repair damaged pier columns 1, which can be wooden or stone. The structure includes a restraining tube 3, core concrete 2, and outer concrete 7. The restraining tube 3 is circumferentially arranged outside the pier column 1, with the core concrete 2 circumferentially filling the space between the restraining tube 3 and the pier column 1. The restraining tube 3 radially constrains the core concrete 2 and the pier column 1. The outer concrete 7 is encased on the outside of the restraining tube 3 and features carved or painted patterns. This serves to simulate and restore the pier column 1 to its original appearance.

[0031] This embodiment realizes the coordinated repair and reinforcement of the ancient building pier column through an innovative triple structure: by arranging the constraint tube 3 in an annular direction on the outer side of the pier column 1 to form a closed skeleton, and filling the gap between the constraint tube 3 and the pier column 1 with the core concrete 2, the radial constraint effect of the constraint tube 3 is utilized to suppress the lateral expansion of the core concrete, so that it is in a three-dimensional compressive state, ensuring that the core concrete can fully fill the surface cracks of the ancient building pier column to achieve the reinforcement of the damaged structure, and quickly improve the compressive bearing capacity of the core concrete 2 and the pier column 1. At the same time, under the core constraint of the core concrete 2, the overall reinforcement of the ancient building pier column can be achieved, the cross section of the pier column 1 is increased, which is conducive to improving the durability, stability and bearing capacity (such as bending resistance and resistance) of the pier column 1. pressure performance); further, by wrapping a layer of outer concrete 7 outside the constraint tube 3 to form a composite constraint, on the one hand, a secondary constraint can be formed on the constraint tube 3, the core concrete 2 and the pier 1, further improving the durability and bearing capacity of the pier 1, improving the corrosion resistance, and effectively resisting the effects of natural disasters such as earthquakes, wind disasters, mudslides and accidental effects such as fire and explosion, effectively preventing the pier 1 from wood decay or stone weathering, and extending the service life of the ancient building pier. On the other hand, the plasticity of the outer concrete 7 can be used to customize the structural shape of the outer concrete 7 according to the actual structural shape of the ancient building pier, so as to restore the original style of the ancient building of the pier 1, with strong adaptability and flexibility. In addition, the surface of the outer concrete 7 can be sprayed, engraved, etc. to achieve a visual effect basically the same as that of the pier 1, maintaining the aesthetic value of the ancient building. The outer concrete 7 has the dual functions of enhancing the structural mechanical properties and being a cultural carrier.

[0032] Specifically, in this embodiment, the constraint tube 3 is preferably made of steel. Steel has good tensile properties and can form a good bonding interface with the core concrete 2 and the outer concrete 7, so that the combination of the two can better bear external loads, and steel has the characteristic of being weldable, which is convenient for construction. As another possible implementation method, the constraint tube 3 can also be made of fiber composite materials. Fiber composite materials not only have high tensile strength but also good corrosion resistance, are light in weight and high in strength, and can be customized with special-shaped interfaces according to the curved surface of the ancient building pier, which is particularly suitable for load reduction and reinforcement. The constraint tube 3 is preferably circular or rectangular, which is basically the same as the original pier structure shape, and other geometric shapes can also be used, such as ellipse, triangle, hexagon or octagon, etc., to form an annular closed area on the outside of the pier 1, providing radial constraint force for the internal core concrete, and improving the compressive strength of the reinforced pier.

[0033] In ancient buildings, damaged structures of piers 1 are often exposed to the outside air. When reinforcing and repairing piers 1, it is preferable to reinforce the entire length of the exposed portion. Specifically, the reinforcement structure's restraining tubes 3, core concrete 2, and outer concrete cladding 7 are all extended along the length of pier 1, with the ends of the outer concrete cladding 7 respectively connected to the top and bottom of pier 1 (typically the ground). This approach, compared to reinforcing pier 1 by arranging restraining tubes 3, core concrete 2, and outer concrete cladding 7 in a segmented manner, extends the reinforcement structure along the entire length of pier 1. This not only eliminates stress concentration caused by circumferential joints and ensures continuous load transfer, but also creates a complete sculpture base on the outer concrete cladding 7, providing a coherent painted pattern, a better visual effect, and a higher degree of historical authenticity.

[0034] In an optional embodiment, the restraining pipe 3 may adopt a continuous structure of full length, and grouting holes are provided on the restraining pipe 3, and concrete is filled through the grouting holes.

[0035] In another alternative embodiment, the constraint tube 3 can be constructed in a split, layer-by-layer configuration. For example, the constraint tube 3 can include several constraint units, which are sequentially connected along the axial direction of the pier 1. A single constraint unit can be formed by enclosing multiple panels and splicing them into a cylindrical shape. Arranging the constraint tube 3 in layers facilitates the layered pouring and vibration of the core concrete 2, facilitating construction.

[0036] Furthermore, in an optional embodiment, a steel cage 4 is preferably placed within the outer concrete 7 to enhance structural strength and significantly improve the flexural rigidity of the reinforced pier column. By placing the steel cage 4 within the outer concrete 7, the toughness of the steel cage 4 can be utilized to delay brittle failure of the concrete after cracking, thereby improving the seismic resistance and deformation capacity of the reinforced pier column. Under repeated loads (such as earthquakes), the steel cage 4 can disperse stress concentration and reduce the risk of localized concrete collapse. The steel cage 4 includes a number of longitudinal bars 5 and stirrups 6. The longitudinal bars 5 are arranged vertically and spaced circumferentially. The stirrups 6 are connected in a ring shape and spaced along the length of the longitudinal bars 5.

[0037] Generally, the stirrup 6 is formed by bending a steel bar as a whole and connecting the ends to form a circle, such as Figure 2As shown, the steel cage 4 is arranged within the outer concrete 7. Compared with the method of placing the steel cage 4 between the pier 1 and the restraining tube 3 (i.e., within the core concrete 2), the expanded area of ​​the restraining tube 3 and the core concrete 2 outside the pier 1 can be relatively small. Through appropriate control of the pouring process, the risk of the core concrete 2 and the restraining tube 3 being voided can also be effectively reduced. In addition, the restraining tube 3 provides a stronger radial restraining force when it is smaller in size, which helps to enhance the restraining effect on the core concrete 2. Subsequently, the outer concrete 7 of the same thickness is arranged outside the restraining tube 3. This not only fully utilizes the advantages of the steel cage 4, but also significantly reduces the overall size of the reinforced pier, reduces concrete material waste, and has a more beautiful and coordinated appearance, better adaptability to working conditions, and a higher overall bearing capacity.

[0038] As other possible implementation methods, Figure 3 As shown, the longitudinal bars 5 of the steel cage 4 can also be arranged at intervals along the rectangular outline and tied with stirrups 6, so that the overall cross-sectional shape of the steel cage 4 is set to a rectangle to better adapt to the rectangular cross-section constraint tube 3, which is not limited to the above example.

[0039] In this embodiment, to preserve the original appearance of the ancient building's piers as much as possible, a custom casting template can be used when pouring the outer concrete 7 based on the cross-sectional shape or surface structure of the original pier. This allows the outer concrete 7 to be shaped according to the template, so that the cast outer concrete 7, after forming, will be consistent with the cross-sectional shape or surface structure of the original pier. If necessary, a pattern can be added to the outer concrete 7 after forming, such as by engraving or spray painting, to achieve the same visual effect as the original wooden and stone piers, thus preserving the aesthetic value of the ancient building.

[0040] To better illustrate the technical features of the above reinforcement structure, this embodiment takes the restraining pipe 3 as an example and further provides the construction steps of the above reinforcement structure as follows:

[0041] Step 1: Steel pipe selection and design parameter determination

[0042] According to the type of damaged pier 1, stress conditions and reinforcement requirements, select the appropriate steel pipe cross-section (such as round or square), determine the material, diameter, wall thickness and length of the steel pipe, and design a reasonable thickness of the core concrete 2 between the steel pipe and the pier 1 to ensure the quality of concrete pouring and the overall performance of the structure.

[0043] Step 2: On-site layout and steel pipe positioning

[0044] According to the reinforcement design plan, the site is set out to accurately measure and calibrate the installation position of the steel pipe to ensure that the axis of the steel pipe is aligned with pier 1. The damaged surface of pier 1 is cleaned and loose materials are removed to improve the bonding effect between the steel tube concrete and pier 1.

[0045] Step 3: Steel pipe installation and fixing

[0046] The selected steel plates are used to surround the pier 1 and are welded to form an outer steel pipe, ensuring that a sufficient gap is retained between the steel pipe and the pier 1, thereby forming a restraining pipe 3.

[0047] Step 4: Core concrete pouring

[0048] The steel pipe constraint pipe 3 is used as a construction template, and the core concrete 2 is poured between the steel pipe and the pier column 1. The layered pouring and vibration process is adopted to ensure the density of the concrete and the good steel pipe constraint effect.

[0049] Step 5: Installation of steel cage 4

[0050] A reinforcement cage 4 is installed outside the steel pipe. It consists of stirrups 6 and longitudinal bars 5. The stirrups 6 are spaced according to design requirements, and a certain gap is maintained between the cage 4 and the steel pipe to ensure the concrete wrapping is effective. The cage 4 is secured by welding or tying to ensure structural stability and uniform stress distribution.

[0051] Step 6: Outsourcing concrete pouring

[0052] The outer casing concrete 7 is poured outside the steel cage 4, also using the layered pouring and vibration process to improve the concrete density and reduce construction defects. Ensure that the outer casing concrete 7 completely wraps the steel cage 4 and forms an integral restraining structure with the steel pipe.

[0053] This construction method fully utilizes the synergistic effect of various components of the steel tube concrete reinforced hybrid structure to achieve effective constraint on pier column 1, improve the overall bearing capacity and durability of the damaged pier column, and at the same time optimize the construction process, reduce damage to the original structure, and has high engineering application value.

[0054] Compared with existing technologies, this solution has the following advantages:

[0055] 1) The reinforcement and repair method proposed in this plan forms a steel tube concrete reinforced hybrid structure based on the damaged pier 1, which greatly improves the structure's load-bearing capacity, fire resistance, seismic resistance, and corrosion resistance. It achieves an overall improvement in the stability, durability, and safety of the ancient building structure, effectively extending the life of the ancient building and preserving its historical and cultural heritage.

[0056] 2) The reinforcement and repair method proposed in this plan can adjust the cross-sectional size and shape according to actual needs. It is convenient to construct and highly flexible, and can meet the repair needs of different forms of piers1 in ancient buildings.

[0057] 3) The reinforcement and restoration method proposed in this plan will not damage the overall building structure and can preserve the cultural value of the ancient building to the greatest extent.

[0058] 4) The reinforcement and restoration method proposed in this plan allows for treatments such as spray painting on the surface of the reinforced piers, so that the reinforced piers can complement the overall building and effectively maintain the aesthetic value of the ancient building.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforcement structure for ancient building pier columns, used for reinforcing and repairing damaged pier columns (1), wherein the pier columns (1) are wooden columns or stone columns, and are characterized in that: The ancient building pier column reinforcement structure comprises a restraining tube (3), core concrete (2) and outer concrete (7), wherein the restraining tube (3) is circumferentially arranged on the outside of the pier column (1), the core concrete (2) is circumferentially filled between the restraining tube (3) and the pier column (1), and the restraining tube (3) is used to radially restrain the core concrete (2) and the pier column (1); the outer concrete (7) is wrapped and arranged on the outside of the restraining tube (3), and a carving or painted pattern is provided on the outer concrete (7), and the outer concrete (7) is used to simulate and restore the original appearance of the ancient building of the pier column (1).

2. The ancient building pier reinforcement structure according to claim 1, characterized in that: The restraining tube (3) is a steel tube or a fiber composite material tube.

3. The ancient building pier reinforcement structure according to claim 1, characterized in that: The cross-sectional shape of the restraining tube (3) is rectangular, circular, elliptical, triangular, hexagonal or octagonal.

4. The ancient building pier reinforcement structure according to claim 1, characterized in that: The constraint pipe (3) is provided with a grouting hole.

5. The ancient building pier reinforcement structure according to claim 1, characterized in that: The constraint tube (3) comprises a plurality of constraint units, and the plurality of constraint units are connected in sequence along the axial direction of the pier column (1).

6. The ancient building pier reinforcement structure according to any one of claims 1 to 5, characterized in that: A steel cage (4) is provided inside the outer concrete (7).

7. The ancient building pier reinforcement structure according to claim 6, characterized in that: The cross-sectional shape of the steel cage (4) is rectangular or circular.

8. The ancient building pier reinforcement structure according to any one of claims 1 to 5, characterized in that: The cross-sectional shape of the outer contour of the outer concrete (7) is the same as the cross-sectional shape of the pier (1).

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