Hidden reinforcing method for historic building
By combining 3D real-scene scanning and BIM model with infrared thermal imaging and endoscopy to detect cracks, reinforcement paths are constructed and reinforcement bars or meshes are implanted, reinforcement adhesive is injected, and slots are sealed. This solves the problem of insufficient precision and concealment in the reinforcement methods of ancient buildings, and achieves the combination of precise reinforcement and protection of historical features.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-04-03
AI Technical Summary
Existing methods for reinforcing ancient buildings lack high-precision digital records and model guidance, making it difficult to fully obtain crack information. This results in insufficient alignment between the reinforcement plan and the actual structure and hidden damage of the building. Furthermore, common reinforcement methods cause visual interference and physical obstruction to the historical appearance.
A BIM model is established using 3D real-scene scanning. Cracks are detected by infrared thermal imaging and endoscopy. Reinforcement paths are constructed, and reinforcement grooves and holes are made on the BIM model. Reinforcing bars or meshes are implanted, reinforcement adhesive is injected, and finally, the grooves and holes are sealed with paste to ensure that the reinforcement measures are consistent with the structural damage and have good concealment.
This approach enhances the precision and concealment of ancient building reinforcement, ensuring a high degree of consistency between the construction and the original appearance, reducing visual interference and physical damage, and improving the overall integrity and structural strength of the reinforcement.
Smart Images
Figure CN121781784A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ancient building reinforcement technology, and in particular to a concealed reinforcement method for ancient buildings. Background Technology
[0002] Ancient buildings often suffer structural damage due to material aging, environmental erosion, and historical loads, such as cracks in walls and beams, and loosening of joints, jeopardizing their safety and long-term preservation. Therefore, effective structural reinforcement is necessary. Existing methods for reinforcing ancient buildings largely rely on manual measurement and experience-based judgment, lacking high-precision digital recording and model guidance. Crack detection methods are relatively limited, making it difficult to simultaneously and comprehensively acquire information on cracks deep within walls and beams, affecting the complete assessment of complex damage. This results in insufficient alignment between the reinforcement plan and the actual structure and hidden damage, impacting the accuracy of reinforcement. Furthermore, common methods such as surface bonding or external steel cladding often expose the reinforced components on the building surface, causing significant visual interference and physical obstruction of the historical appearance. The reinforcement materials also often lack color and texture matching with the original building materials, resulting in poor concealment during repairs. Summary of the Invention
[0003] The main objective of this invention is to propose a concealed reinforcement method for ancient buildings, aiming to solve the technical problems of insufficient precision and poor concealment of existing ancient building reinforcement methods.
[0004] To achieve the above objectives, the concealed reinforcement method for ancient buildings proposed in this invention includes the following steps: performing a three-dimensional real-scene scan of the ancient building and establishing a BIM model of the ancient building based on the scan results; scanning the wall cracks of the ancient building using an infrared thermal imager and detecting the beam and column cracks of the ancient building using an endoscope; constructing reinforcement paths on the BIM model based on the wall cracks and beam and column cracks; opening reinforcement grooves on the walls and beams and columns of the ancient building according to the reinforcement paths, and drilling reinforcement holes at each beam and column node of the ancient building; inserting reinforcing bars or reinforcing mesh into each reinforcement groove according to the material of the walls and beams and columns; injecting reinforcing adhesive into each reinforcement hole; and preparing a paste to seal each reinforcement groove and each reinforcement hole.
[0005] In one embodiment, the step of performing a three-dimensional real-scene scan of the ancient building and establishing a BIM model of the ancient building based on the scan results includes: using a three-dimensional laser scanner to acquire high-precision point cloud data of the ancient building and generating a real-scene three-dimensional model with a coordinate system; and establishing the BIM model based on the real-scene three-dimensional model.
[0006] In one embodiment, the step of constructing a reinforcement path on the BIM model based on the wall cracks and the beam-column cracks includes: mapping the spatial information of the wall cracks and the beam-column cracks to the corresponding components of the BIM model; generating multiple candidate reinforcement paths extending in different directions based on the crack morphology in the BIM model; performing structural simulation analysis on the wall and beam-column, and selecting the optimal reinforcement path from the multiple candidate reinforcement paths based on the stress characteristics of the wall and beam-column.
[0007] In one embodiment, the step of opening reinforcement grooves on the walls and beams of the ancient building according to the reinforcement path and drilling reinforcement holes at each beam-column node of the ancient building includes: positioning and laying out the reinforcement path on the walls and beams of the ancient building; determining the nearest groove direction for each wall and beam and determining the nearest hole direction for each beam-column node; opening the keyhole-type reinforcement grooves on the walls and beams along the layout line from the nearest groove direction, so that the reinforcement grooves avoid the wall edges and beam-column nodes; and drilling reinforcement holes at the beam-column nodes along the layout line from the nearest hole direction.
[0008] In one embodiment, the step of inserting reinforcing bars or reinforcing mesh into each of the reinforcing grooves according to the material of the wall and beams includes: for wooden walls and beams, inserting prestressed carbon fiber bars into the reinforcing grooves; for brick or rammed earth walls and beams, inserting carbon fiber mesh anchors into the reinforcing grooves to form the reinforcing mesh.
[0009] In one embodiment, the step of implanting reinforcing bars or reinforcing mesh into each of the reinforcement grooves according to the material of the wall and beams includes: injecting anchoring adhesive into the reinforcement groove; filling the reinforcement groove with the reinforcing bars or the reinforcing mesh; continuing to inject anchoring adhesive into the reinforcement groove to embed the reinforcing bars or the reinforcing mesh into the reinforcement groove, so that the anchoring adhesive fills the bottom of the reinforcement groove; and waiting for the anchoring adhesive to solidify, forming a first sealing space between the surface of the anchoring adhesive and the opening of the reinforcement groove.
[0010] In one embodiment, the step of injecting reinforcing adhesive into each of the reinforcing holes includes: injecting nano-modified epoxy resin into each of the reinforcing holes, so that a second sealing space is formed between the surface of the nano-modified epoxy resin and the opening of the reinforcing hole.
[0011] In one embodiment, the step of preparing the paste to seal each of the reinforcement grooves and each of the reinforcement holes includes: collecting debris generated during the opening of the reinforcement grooves and drilling of the reinforcement holes; adding biomass adhesive to the debris and stirring evenly to form the paste; injecting the paste into each of the first sealing spaces and each of the second sealing spaces until the surface of the paste is flush with the surface of the wall, beam, or beam-column joint.
[0012] In one embodiment, after the step of injecting the paste into each of the first sealing spaces and each of the second sealing spaces until the surface of the paste is flush with the surface of the wall, beam, or beam-column joint, the method further includes: preparing a pigment of the same color according to the color of the wall, beam, or beam-column joint; and applying the pigment of the same color in layers to the surface of the paste.
[0013] In one embodiment, the depth of the reinforcement groove is D1, the thickness of the wall or beam is D2, and D1 / D2≤0.1.
[0014] This invention proposes a concealed reinforcement method for ancient buildings. It establishes a BIM model of the ancient building through 3D real-scene scanning, providing a precise digital benchmark for the reinforcement process. Infrared thermal imaging and endoscopy are used to detect cracks in walls and beams / columns, obtaining accurate distribution information of hidden defects. Based on the data of wall and beam / column cracks, a reinforcement path adapted to the structural damage is constructed in the BIM model, achieving precise planning of the reinforcement scheme. According to the reinforcement path, reinforcement grooves and holes are opened on the actual building to ensure accurate construction positioning and effectively improve the precision of ancient building reinforcement. Depending on the material differences of the components to be reinforced, suitable reinforcing bars or meshes are implanted in the reinforcement grooves to achieve targeted internal reinforcement of different components. Simultaneously, reinforcing adhesive is injected into the reinforcement holes of beam-column joints to enhance the overall connection performance of the joints, achieving effective reinforcement of the beam-column joints. Finally, all grooves and holes are sealed with a paste matching the original material, restoring the building's appearance and effectively improving the concealment of the reinforcement and repair. By using digital BIM models to guide physical construction, the reinforcement measures were ensured to be highly consistent with the actual structure and damage patterns of the ancient buildings. The concealed slot design and implanted reinforcement effectively improved the structural strength while minimizing visual interference and physical damage to the original appearance of the ancient buildings. The combination of multiple detection methods and targeted reinforcement measures improved the ability to handle complex cracks and structures of different materials in ancient buildings and enhanced the overall integrity of the reinforcement. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0016] Figure 1 This is a flowchart illustrating an embodiment of the concealed reinforcement method for ancient buildings provided by the present invention.
[0017] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0019] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0020] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0021] Existing methods for reinforcing ancient buildings largely rely on manual measurement and experience-based judgment, lacking high-precision digital records and model guidance. Crack detection methods are relatively limited, making it difficult to simultaneously and comprehensively acquire information on cracks deep within walls and beams, affecting the complete assessment of complex damage. This results in insufficient alignment between the reinforcement plan and the actual structure and hidden damage, impacting the accuracy of ancient building reinforcement. Furthermore, common methods such as surface bonding or external steel cladding often expose the reinforced components on the building surface, causing significant visual interference and physical obstruction of the historical appearance of the ancient building. The reinforcement materials also often do not match the original building materials in terms of color and texture, resulting in poor concealment of the repairs.
[0022] This invention proposes a concealed reinforcement method for ancient buildings, comprising the following steps: S10: Perform a 3D real-scene scan of the ancient building and establish a BIM model of the ancient building based on the scan results; Please see Figure 1 , Figure 1 This is a flowchart illustrating an embodiment of the concealed reinforcement method for ancient buildings provided by the present invention. The present invention applies high-precision 3D real-scene scanning and BIM technology to ancient buildings, achieving a precise, quantifiable, and accurate record of the current state of the ancient buildings. This provides a high-fidelity 3D data foundation for subsequent reinforcement design, facilitating simulation analysis, scheme optimization, and construction guidance.
[0023] S20: Use an infrared thermal imager to scan the wall cracks of the ancient building and use an endoscope to detect the beam and column cracks of the ancient building; It can be noted that both the infrared thermal imager and the endoscope use existing technologies. The infrared thermal imager performs non-contact infrared thermal imaging scanning of the wall, and judges the internal cracks by identifying the temperature differences inside the wall, thus achieving non-destructive detection of wall cracks. The endoscope is inserted into the cracks in the beams and columns to achieve a direct inspection of the cracks inside the beams and columns, and to obtain a comprehensive understanding of the distribution of the cracks in the beams and columns.
[0024] S30: Based on the wall cracks and beam / column cracks, construct reinforcement paths on the BIM model; Based on the detection data of wall and beam / column cracks, the location and direction of the cracks are marked in the BIM model, and the layout path of reinforcement components covering the crack area is designed accordingly. Constructing reinforcement paths on the BIM model allows for digital pre-simulation and optimization of the reinforcement scheme, ensuring that the reinforcement paths match the actual structure and crack morphology of the ancient building.
[0025] S40: According to the reinforcement path, reinforcement grooves are opened on the walls and beams of the ancient building, and reinforcement holes are drilled at each beam and column node of the ancient building. Based on the reinforcement path planned in the BIM model, reinforcement grooves are opened in the middle of the walls and beams, and reinforcement holes are drilled at the nodes at the edges of the beams and columns. The reinforcement grooves and reinforcement holes extend from the surface of the component to the internal crack location, providing a precise physical channel for the subsequent implantation of reinforcement bars and reinforcement mesh and the injection of reinforcement adhesive.
[0026] S50: Depending on the material of the wall and beam, insert reinforcing bars or reinforcing mesh into each of the aforementioned reinforcing grooves; For the middle part of walls and beams, reinforcement bars or reinforcement mesh are used for reinforcement. The choice of reinforcement bars or reinforcement mesh depends on the material of the walls and beams. By using reinforcement bars or reinforcement mesh with higher strength, the structural performance of the components is improved, thereby internally reinforcing and strengthening the cracked walls or beams.
[0027] S60: Inject reinforcing adhesive into each of the reinforcing holes; For the intersection of beams and columns, reinforcement is carried out by opening reinforcement holes and injecting reinforcement adhesive. The reinforcement adhesive fills the cracks at the beam-column joint, and after the reinforcement adhesive cures, it can effectively enhance the connection strength at the connection joint of the ancient building.
[0028] S70: Prepare the paste to seal each of the reinforcement grooves and each of the reinforcement holes.
[0029] Sealing the reinforcement grooves and holes with paste can restore the surface of the reinforced walls and beams to a smooth surface, conceal reinforcement marks, achieve the effect of hidden reinforcement, and protect the internal reinforcement components.
[0030] This invention proposes a concealed reinforcement method for ancient buildings. It establishes a BIM model of the ancient building through 3D real-scene scanning, providing a precise digital benchmark for the reinforcement process. Infrared thermal imaging and endoscopy are used to detect cracks in walls and beams / columns, obtaining accurate distribution information of hidden defects. Based on the data of wall and beam / column cracks, a reinforcement path adapted to the structural damage is constructed in the BIM model, achieving precise planning of the reinforcement scheme. According to the reinforcement path, reinforcement grooves and holes are opened on the actual building to ensure accurate construction positioning and effectively improve the precision of ancient building reinforcement. Depending on the material differences of the components to be reinforced, suitable reinforcing bars or meshes are implanted in the reinforcement grooves to achieve targeted internal reinforcement of different components. Simultaneously, reinforcing adhesive is injected into the reinforcement holes of beam-column joints to enhance the overall connection performance of the joints, achieving effective reinforcement of the beam-column joints. Finally, all grooves and holes are sealed with a paste matching the original material, restoring the building's appearance and effectively improving the concealment of the reinforcement and repair. By using digital BIM models to guide physical construction, the reinforcement measures were ensured to be highly consistent with the actual structure and damage patterns of the ancient buildings. The concealed slot design and implanted reinforcement effectively improved the structural strength while minimizing visual interference and physical damage to the original appearance of the ancient buildings. The combination of multiple detection methods and targeted reinforcement measures improved the ability to handle complex cracks and structures of different materials in ancient buildings and enhanced the overall integrity of the reinforcement.
[0031] In one embodiment, step S10 includes: S11: Use a 3D laser scanner to acquire high-precision point cloud data of the ancient building and generate a real-scene 3D model with a coordinate system. S12: Establish the BIM model based on the real-world 3D model.
[0032] Understandably, using a 3D laser scanner to acquire high-precision point cloud data of ancient buildings—a dense set of 3D coordinate points on the building's surface—can accurately record the building's geometry and generate a real-world 3D model with a coordinate system. This model integrates the point cloud data into a 3D visualization model with a unified spatial reference system. A BIM model is then built based on this model, integrating building component attributes and material information to form an information-rich digital building model. This sequence of acquiring high-precision point cloud data to generate the real-world 3D model, followed by building the BIM model, ensures that the BIM model is based on accurate on-site measurements. The high-precision point cloud data provides an accurate record of the ancient building's geometric details, while the coordinate-system-based real-world 3D model establishes the model's spatial positioning, giving the BIM model high geometric accuracy and spatial consistency. This provides a reliable digital benchmark for subsequent methods such as scanning wall cracks with infrared thermal imagers, detecting beam and column cracks with endoscopes, and constructing reinforcement paths on the BIM model, thus improving the overall accuracy and construction operability of concealed reinforcement methods for ancient buildings.
[0033] In one embodiment, step S30 includes: S31: Map the spatial information of the wall cracks and the beam and column cracks to the corresponding components of the BIM model; S32: In the BIM model, multiple candidate reinforcement paths extending in different directions are generated based on the crack morphology; S33: Perform structural simulation analysis on the walls and beams, and select the optimal reinforcement path from among the multiple candidate reinforcement paths based on the stress characteristics of the walls and beams.
[0034] Spatial information of wall and beam / column cracks is mapped onto the corresponding components in the BIM model. This spatial information includes the location, length, and direction of the cracks. Within the BIM model, multiple candidate reinforcement paths extending in different directions are generated based on the crack morphology. Structural simulation analysis is then performed on the walls and beams / columns. Based on the stress characteristics of the walls and beams / columns, the optimal reinforcement path is selected from these candidate paths. The structural simulation analysis uses software to simulate the stress-strain state of the components under load. The stress characteristics include the force transmission method and stress concentration areas of the components. The optimal reinforcement path is the one selected from the candidate paths that most effectively improves the stress performance of the components, thus enhancing the structural rationality of the reinforcement scheme and the overall reliability of the reinforcement effect.
[0035] In one embodiment, step S40 includes: S41: Locate and lay out the reinforcement path on the walls and beams of the ancient building; S42: Determine the nearest slotting direction for each wall and beam / column, and determine the nearest opening direction for each beam / column node; S43: The reinforcing grooves, which are keyhole-type, are opened along the layout line from the nearest grooving direction on the wall and beams and columns, so that the reinforcing grooves avoid the wall edges and beam-column joints; S44: Drill reinforcement holes for the beam-column joint along the layout line from the nearest opening direction.
[0036] Understandably, the optimal reinforcement path planned in the BIM model is accurately projected onto the surfaces of the solid walls and beams to form construction layout lines; the nearest slotting direction for each wall and beam is determined, as well as the nearest hole direction for each beam-column node. The nearest slotting direction is the direction with the shortest cutting distance and the least damage to the original structural continuity when cutting from the surface of the component along the reinforcement path for each wall or beam component to be slotted. The nearest hole direction is the direction with the shortest drilling distance and the easiest construction when drilling from the surface of the beam-column node to the preset depth; and keyhole-type reinforcement slots are opened on the walls and beams along the layout lines from the nearest slotting direction. The reinforcement slots are channels with a cross-section in the shape of a keyhole, so that the reinforcement slots avoid the edges of the walls and beam-column nodes. Determining the direction of the nearest groove and the direction of the nearest hole optimizes the construction entry angle and minimizes the amount of material removed from the original components of the ancient building. Creating keyhole-type reinforcement grooves and ensuring they avoid wall edges and beam-column joints reduces construction disturbance in structurally sensitive areas and stress concentration zones. The shape of the keyholes provides a stable space for subsequent implantation of reinforcing bars or mesh. Drilling reinforcement holes along the direction of the nearest hole facilitates the injection of reinforcing adhesive and ensures its full penetration within the joint, effectively improving the construction safety, structural protection, and operational feasibility of the concealed reinforcement method for ancient buildings.
[0037] In one embodiment, step S50 includes: S501: For wooden walls and beams, prestressed carbon fiber reinforcement bars are implanted into the reinforcement groove; S502: For brick or rammed earth walls and beams, carbon fiber mesh anchors are implanted into the reinforcement groove to form the reinforcement mesh.
[0038] It should be noted that for wooden walls and beams, prestressed carbon fiber reinforcement bars are implanted into the reinforcement grooves. These prestressed carbon fiber reinforcement bars are high-strength carbon fiber composite materials with pre-applied tension. For brick or rammed earth walls and beams, carbon fiber mesh anchor rods are implanted into the reinforcement grooves. These carbon fiber mesh anchor rods are mesh anchoring components made of carbon fiber, forming a reinforcement mesh, achieving a precise match between the reinforcement material and the material of the ancient building components. Implanting prestressed carbon fiber reinforcement bars into wooden walls and beams can effectively improve the tensile strength and stiffness of the components and reduce creep and cracking of the wood. Implanting carbon fiber mesh anchor rods into brick or rammed earth walls and beams forms a reinforcement mesh, enhancing the integrity, shear resistance, and peel resistance of the masonry or soil. Targeted implantation schemes based on the differences in ancient building materials allow the reinforcement bars or mesh to fully utilize their material properties, adapting to the mechanical behavior and reinforcement needs of components of different materials, thereby improving the adaptability, durability of reinforcement effects, and structural safety redundancy of concealed reinforcement methods for ancient buildings.
[0039] In one embodiment, step S50 includes: S51: Inject anchoring adhesive into the reinforcement groove; S52: Fill the reinforcing ribs or reinforcing mesh into the reinforcing groove; S53: Continue to inject anchoring adhesive into the reinforcement trench to embed the reinforcing bar or the reinforcing mesh into the reinforcement trench, so that the anchoring adhesive fills the bottom of the reinforcement trench; S54: After the anchoring adhesive has solidified, a first sealing space is formed between the surface of the anchoring adhesive and the opening of the reinforcement groove.
[0040] It should be noted that by embedding reinforcing bars or meshes within the anchoring adhesive, the adhesive firmly bonds them to the reinforcement trench. The initial injection of anchoring adhesive provides a preliminary positioning and moist bonding interface for the reinforcing bars or meshes. Continued injection of adhesive after filling the reinforcement material eliminates air from the trench and ensures the adhesive completely encapsulates the reinforcement material and fills any gaps at the bottom of the trench, allowing for effective load transfer. The anchoring adhesive is heat-melting; after heating, the embedded reinforcing bars or meshes can be removed from the reinforcement trench. The adhesive then bonds the reinforcing bars or meshes to the component to be reinforced, achieving a peelable connection between the reinforcing bars or meshes and the component. This effectively improves the flexibility of ancient building reinforcement construction, facilitates subsequent maintenance and inspection, and meets the reversibility requirements of ancient building reinforcement.
[0041] In one embodiment, step S60 includes: S61: Inject nano-modified epoxy resin into each of the reinforcing holes to form a second sealing space between the surface of the nano-modified epoxy resin and the opening of the reinforcing hole.
[0042] It can be explained that nano-modified epoxy resin is an epoxy resin-based adhesive incorporating nanoparticles, creating a second sealing space between the surface of the nano-modified epoxy resin and the opening of the reinforcement hole. Directly injecting nano-modified epoxy resin into the reinforcement hole of the beam-column joint enhances the flowability and permeability of the colloid, as well as its mechanical properties after curing. The second sealing space formed below the opening on the colloid surface after injection provides a filling space for subsequent sealing of the reinforcement hole with paste.
[0043] In one embodiment, step S70 includes: S71: Collect the debris generated during the opening of the reinforcement groove and the drilling of the reinforcement hole; S72: Add biomass adhesive to the debris and stir until uniform to form the paste; S73: Inject the paste into each of the first sealing spaces and each of the second sealing spaces until the surface of the paste is flush with the surface of the wall, beam, column or beam-column joint.
[0044] It should be noted that the anchoring adhesive does not completely fill the reinforcement groove; the surface of the adhesive is recessed into the reinforcement groove relative to the surface of other parts of the component to be reinforced, forming a first sealing space. Similarly, the nano-modified epoxy resin does not completely fill the reinforcement hole; the surface of the nano-modified epoxy resin is recessed inward, forming a second sealing space. By filling the first and second sealing spaces with the paste, the reinforcement groove and reinforcement hole are tightly filled, maintaining visual consistency with the historical texture of the surrounding area of the component to be reinforced. By first collecting debris from the original building materials generated during construction, and then mixing it with biomass adhesive to form a paste, the consistency of the sealing material with the original wall, beam, and column materials of the ancient building in terms of composition, color, and texture is ensured. The paste formed by adding biomass adhesive has good adhesion and plasticity to adapt to the sealing construction, and its environmentally friendly characteristics also reduce the chemical impact on the ancient building materials. After the structural reinforcement is completed, the appearance of the building is effectively restored, construction traces are eliminated to the greatest extent, and the integrity and concealment of the concealed reinforcement method for ancient buildings in terms of protecting the historical features are effectively improved.
[0045] In one embodiment, after step S73, the method further includes the following step: S74: Prepare a pigment of the same color as the wall, beam, column or beam-column joint; S75: Apply the same color pigment in layers to the surface of the paste.
[0046] Understandably, by first preparing pigments of the same color as the original components and then applying them in layers to the smoothed paste surface, the pigment layers can better simulate the color and texture of the surrounding historical surfaces. This further eliminates the visual difference between the sealing material and the original building surface, allowing the sealed areas of the reinforcement grooves and holes to blend completely into the surrounding historical texture in terms of color and texture. This enhances the final effect of the concealed reinforcement method for ancient buildings in terms of visual concealment and historical preservation.
[0047] In one embodiment, the depth of the reinforcement groove is D1, the thickness of the wall or beam is D2, and D1 / D2≤0.1.
[0048] It should be noted that the ratio of the depth D1 of the reinforcement trench to the thickness D2 of the wall or beam should not exceed 0.1. This ensures that the reinforcement trench provides the necessary space for the insertion of reinforcing bars or mesh, while avoiding excessive weakening of the original cross-section of the wall and beam due to excessive trench depth. This protects the overall load-bearing performance of the load-bearing components, minimizes physical damage to the original structural integrity of the ancient building, and improves the structural safety of the reinforcement construction and the protection of the ancient building itself.
[0049] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.
Claims
1. A concealed reinforcement method for ancient buildings, characterized in that, Including the following steps: A 3D real-view scan of the ancient building was performed, and a BIM model of the ancient building was established based on the scan results; The wall cracks of the ancient building were scanned using an infrared thermal imager, and the beam and column cracks of the ancient building were detected using an endoscope. Based on the wall cracks and beam / column cracks, construct reinforcement paths on the BIM model; According to the reinforcement path, reinforcement grooves are opened on the walls and beams of the ancient building, and reinforcement holes are drilled at each beam and column node of the ancient building. Depending on the material of the wall and beams, reinforcing bars or reinforcing mesh are inserted into each of the aforementioned reinforcing grooves; Inject reinforcing adhesive into each of the aforementioned reinforcing holes; Prepare a paste to seal each of the reinforcement grooves and reinforcement holes.
2. The concealed reinforcement method for ancient buildings as described in claim 1, characterized in that, The steps of performing a 3D real-scene scan of the ancient building and establishing a BIM model of the ancient building based on the scan results include: High-precision point cloud data of the ancient building was obtained using a 3D laser scanner, and a real-scene 3D model with a coordinate system was generated. The BIM model is established based on the real-world 3D model.
3. The concealed reinforcement method for ancient buildings as described in claim 1, characterized in that, The step of constructing reinforcement paths on the BIM model based on the wall cracks and the beam-column cracks includes: The spatial information of the wall cracks and the beam and column cracks is mapped onto the corresponding components of the BIM model; In the BIM model, multiple candidate reinforcement paths extending in different directions are generated based on the crack morphology. Structural simulation analysis is performed on the walls and beams, and the optimal reinforcement path is selected from multiple candidate reinforcement paths based on the stress characteristics of the walls and beams.
4. The concealed reinforcement method for ancient buildings as described in claim 1, characterized in that, The steps of opening reinforcement grooves on the walls and beams of the ancient building according to the reinforcement path, and drilling reinforcement holes at each beam-column joint of the ancient building include: The reinforcement path is positioned and laid out on the walls and beams of the ancient building. Determine the nearest slotting direction for each wall and beam / column, and determine the nearest opening direction for each beam / column node; The reinforcing grooves, which are keyhole-type, are opened along the layout line from the nearest grooving direction on the wall and beams and columns, so that the reinforcing grooves avoid the wall edges and beam-column joints; Reinforcement holes are drilled along the layout line from the direction of the nearest opening to the beam-column joint.
5. The concealed reinforcement method for ancient buildings as described in claim 1, characterized in that, The step of inserting reinforcing bars or reinforcing mesh into each of the reinforcing grooves according to the material of the wall and beams includes: For wooden walls and beams, prestressed carbon fiber reinforcement bars are implanted into the reinforcement grooves; For brick or rammed earth walls and beams, carbon fiber mesh anchors are implanted into the reinforcement groove to form the reinforcement mesh.
6. The concealed reinforcement method for ancient buildings as described in any one of claims 1 to 5, characterized in that, The step of inserting reinforcing bars or reinforcing mesh into each of the reinforcing grooves according to the material of the wall and beams includes: Inject anchoring adhesive into the reinforcement groove; Fill the reinforcing ribs or reinforcing mesh into the reinforcing groove; Continue injecting anchoring adhesive into the reinforcement trench to embed the reinforcing bars or the reinforcing mesh into the reinforcement trench, so that the anchoring adhesive fills the bottom of the reinforcement trench; Once the anchoring adhesive has solidified, a first sealing space is formed between the surface of the anchoring adhesive and the opening of the reinforcement groove.
7. The concealed reinforcement method for ancient buildings as described in claim 6, characterized in that, The step of injecting reinforcing adhesive into each of the reinforcing holes includes: Nano-modified epoxy resin is injected into each of the reinforcement holes to form a second sealing space between the surface of the nano-modified epoxy resin and the opening of the reinforcement hole.
8. The concealed reinforcement method for ancient buildings as described in claim 7, characterized in that, The step of preparing the paste to seal each of the reinforcing grooves and each of the reinforcing holes includes: Collect the debris generated during the opening of the reinforcement groove and the drilling of the reinforcement hole; Add biomass adhesive to the debris and stir until homogeneous to form the paste; The paste is injected into each of the first and second sealing spaces until the surface of the paste is flush with the surface of the wall, beam, column, or beam-column joint.
9. The concealed reinforcement method for ancient buildings as described in claim 8, characterized in that, After the step of injecting the paste into each of the first sealing spaces and each of the second sealing spaces until the surface of the paste is flush with the surface of the wall, beam, or beam-column joint, the method further includes: Prepare a pigment of the same color according to the color of the wall, beam, column, or beam-column joint; The same color pigment is applied in layers to the surface of the paste.
10. The concealed reinforcement method for ancient buildings as described in any one of claims 1 to 5, characterized in that, The depth of the reinforcement groove is D1, and the thickness of the wall or beam is D2, where D1 / D2≤0.1.