A method for repairing and reinforcing defects in wooden columns of ancient buildings

Abstract

The present invention provides a method for repairing and reinforcing defects in wooden columns of ancient buildings, and relates to the technical field of ancient building column repair. The method comprises the following steps: treating cracked and damaged parts of the original wooden columns: estimating the areas that need to be repaired, grinding and cleaning the surface of the wooden columns at the cracked or damaged parts, and cleaning up the wood chips at the rotten, knotty, and split parts; reinforcing with chemical coagulants: using epoxy resin and glass fiber mixture to repair and reinforce the removed parts; beautifying wooden gussets: using wooden gussets made of the same material as the wooden columns on the epoxy resin and glass fiber mixture, and grinding the joints flush with the original wooden columns; overall dark treatment of carbon fiber hoops: a number of carbon fiber hoops are provided along the length direction of the wooden columns to be reinforced, and grooves are ground out of the wooden columns at the provided positions so that the carbon fiber hoops are flush with the wooden columns themselves. The present invention provides a method for repairing and reinforcing defects in wooden columns of ancient buildings, which effectively solves the problem of pressure on the load-bearing structure and structural instability caused by defects in wooden columns of ancient buildings.

Description

Technical Field

[0001] The invention provides a method for repairing and reinforcing defects in wooden columns of ancient buildings, and relates to the technical field of ancient building column repair. Background Art

[0002] The traditional structural forms of ancient Chinese architecture, with its primary use of wood as a building material, offer wide adaptability and considerable flexibility. Compared to building materials like brick and stone, wood boasts relatively high bending and tensile strength. Furthermore, it offers excellent earthquake resistance, strong adaptability, ease of processing, and easy structural standardization, allowing for flexible construction and diverse forms. However, as a biological material, wood has inherent weaknesses. It is susceptible to decay, shrinkage and cracking, susceptibility to pests and diseases, and flammability. These inherent drawbacks often lead to the destruction of various historical buildings in my country after just two or three hundred years. Many precious ancient structures have been destroyed by natural disasters, war, natural decay, or ant and insect infestations. Those that survive have also weathered many vicissitudes of life. The value of traditional architectural heritage lies not only in its ancient existence but also in its valuable information about the society, culture, and aesthetics of the time. Therefore, the preservation and management of ancient architecture is a long-term and arduous task. The natural lifespan of wooden structures and various biological challenges pose significant challenges to our work. In the process of strengthening the daily maintenance of ancient buildings, we should continue to pay attention to various hazards to building safety, such as wind and rain erosion, damage caused by man-made and natural disasters, and the inevitable weakening and damage of material and structural performance.

[0003] Relevant literature search revealed that repairing and reinforcing the defects of wooden columns in ancient buildings is imperative in the "Analysis of the Prospects for the Development of Timber Structures in my country." Wood shrinkage cracks are common in the northwest region. The disappearance of cracks in the wooden structure shifts the original points of gravity support, significantly reducing the strength and density of the wooden structure, resulting in a dispersed support structure. Generally, this structure is relatively stable when not under the influence of external forces. However, when subjected to external forces, the overall structure used to support gravity tends to develop larger cracks, exacerbating the severity of the problem and posing a significant safety hazard. The environment in which the ancient building is located also determines the degree of wood decay. Most ancient building timber will decay to varying degrees, impacting the structure and easily leading to structural instability. This in turn increases the pressure on other load-bearing structures, and to a certain extent, accelerates the rate of damage to other load-bearing structures, significantly reducing the overall stability of the ancient building.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] In order to solve the above technical problems, the inventors have come up with the technical solutions of the present invention through practice and summary. The present invention discloses that the basic concept of the technical solutions adopted by the present invention to solve the above technical problems is:

[0006] A method for repairing and reinforcing damaged wooden columns of ancient buildings, characterized by comprising the following steps:

[0007] Step 1: Treat cracked and damaged parts of the original wooden columns: Estimate the areas that need repair, polish and clean the surface of the wooden columns at the cracked or damaged parts, and remove sawdust from rotten wood, knots, and splits;

[0008] Step 2: Reinforcement with chemical condensation materials: Use epoxy resin and glass fiber mixture 200 to repair and reinforce the removed parts;

[0009] Step 3, beautify the wooden gussets: use wooden gussets made of the same material as the wooden columns, install them on the epoxy resin and fiberglass mixture, and grind the joints flush with the original wooden columns;

[0010] Step 4: Overall dark treatment of carbon fiber hoops: Several carbon fiber hoops are set along the length direction of the wooden column to be reinforced, and concave seams are polished on the wooden column at the setting position to make the carbon fiber hoops flush with the wooden column itself.

[0011] In a further technical solution, in step 2, for cracks with a width not greater than 2 mm, glue is poured or filled along the cracks, and excess glue on the surface is removed by a tool.

[0012] In a further technical solution, in step 2, for crack width greater than 2 mm:

[0013] First, reinforce the wooden column as a whole, and set reinforcements to reinforce the top and bottom of the wooden column;

[0014] Install the positioning assembly, which is installed on the outside of the cracked or damaged part of the wooden column. A clamping plate is installed on the positioning assembly. The clamping plate is suitable for detachably installing the spray-coated parts. The spray-coated parts soften the cracked parts.

[0015] Finally, the softened parts are removed and chiseled.

[0016] In a further technical solution, the reinforcement member includes an upper abutment rod and a lower abutment rod, a transmission rod is installed between the upper abutment rod and the lower abutment rod, and the transmission rods are provided in multiple groups and circumferentially distributed around the circumference of the wooden column;

[0017] The upper abutment rod and the lower abutment rod are bent rods, a first connecting ring is installed at the top connection of the upper abutment rod and the transmission rod, and a second connecting ring is installed at the bottom connection of the lower abutment rod and the transmission rod;

[0018] The connecting ring 1 and the connecting ring 2 are both two-petal type and are provided with two groups of connecting ears, and locking bolts are installed in the connecting ears for locking.

[0019] In a further technical solution, the outer ends of the transmission rods are each provided with a vertical groove, an outer ring plate is installed in the vertical groove, a clamping block is provided in the outer ring plate, and the clamping block is suitable for sliding in the vertical groove;

[0020] A vertical plate is provided on the outer ring plate, a rotating part is installed outside the vertical plate, and the top of the rotating part is suitable for installing a spraying part.

[0021] In a further technical solution, the rotating member includes two sets of connecting rods, one end of the connecting rod is rotatably connected to the vertical plate, and the other end of the connecting rod is equipped with a support cylinder, which is rotatably connected to the connecting rod;

[0022] A clamping plate is installed on the top of the support tube, a threaded rod is installed on the bottom of the support tube, an internal threaded hole is provided in the support tube, the threaded rod and the internal threaded hole are adapted to each other, and an abutment plate is installed on the bottom of the threaded rod.

[0023] In a further technical solution, a telescopic rod is installed outside the outer ring plate, a connecting member 1 is installed at the output end of the telescopic rod, and a connecting member 2 is installed on the upper abutting rod and / or the lower abutting rod, and the connecting member 1 and the connecting member 2 are detachably connected.

[0024] Beneficial effects:

[0025] The present invention utilizes the function of chemical material condensation to increase the bearing capacity of wooden columns, thereby improving the reinforcement effect of wooden columns. It provides a convenient, practical, and greatly improved strength reinforcement and repair structure for cracked and diseased parts of wooden columns. The wooden strip gussets and the exterior of the wooden columns to be reinforced are covered with the carbon fiber hoops, and a number of carbon fiber hoops are provided along the length direction of the wooden columns to be reinforced. The reinforcement effect is beautiful and reliable, and complies with the "dark treatment" method in the design of wooden structure reinforcement. The setting method of the present invention is suitable for repairing damaged wooden columns of ancient buildings. After reinforcement, both the appearance and the structural integrity have been well repaired. A variety of methods are used to protect the wooden columns from the inside out, extend the service life, and improve the safety of antique buildings. The structural strength of the wooden columns is guaranteed, which complies with the principle of "repairing the old as it was" for cultural relics.

[0026] On the other hand, to deal with cracks on high wooden columns, it is costly to manually set up scaffolding or cranes, and the manual treatment of cracks is quite arbitrary, so a more standardized method is needed to deal with the cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 This is a schematic diagram of the wooden column structure of Example 1 of the present invention;

[0029] Figure 2 for Figure 1 AA cross-section diagram;

[0030] Figure 3 This is a schematic diagram of a reinforcement member installed outside a wooden column according to Example 2 of the present invention;

[0031] Figure 4 for Figure 3 Enlarged view of part B.

[0032] In the figure: 1. Upper abutment rod; 2. Lower abutment rod; 3. Transmission rod; 4. Connecting ring 1; 5. Connecting ring 2; 6. Connecting ear; 7. Vertical groove; 8. Outer ring plate; 10. Vertical plate; 11. Connecting rod; 12. Support cylinder; 13. Clamping plate; 14. Threaded rod; 15. Abutment plate; 16. Telescopic rod; 17. Connecting piece 1; 18. Connecting piece 2; 100. Wooden column; 200. Epoxy resin and glass fiber mixture; 300. Wooden gusset plate; 400. Carbon fiber hoop; DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] like Figures 1 to 2 The figure shows an embodiment of the present invention. A method for repairing and reinforcing a damaged wooden column of an ancient building, characterized by comprising the following steps:

[0037] Step 1: Treat the cracked and damaged parts of the original wooden column 100: Estimate the area that needs to be repaired, polish and clean the surface of the wooden column 100 at the cracked or damaged parts, and remove the wood chips from the rotten parts, knots, and splits;

[0038] Step 2: Reinforcement with chemical condensation materials: Use epoxy resin and glass fiber mixture 200 to repair and reinforce the removed parts;

[0039] Step 3, beautification of the wooden gusset plate 300: Use the wooden gusset plate 300 made of the same material as the wooden column 100, install it on the epoxy resin and glass fiber mixture 200, and grind the joints to be flush with the original wooden column 100;

[0040] Step 4, the carbon fiber hoop 400 is overall dark-treated: a number of carbon fiber hoops 400 are provided along the length direction of the wood column 100 to be reinforced, and grooves are polished on the wood column 100 at the setting position so that the carbon fiber hoop 400 is flush with the wood column 100 itself.

[0041] Example 2

[0042] like Figure 3 and Figure 4 As shown, it is another embodiment of the present invention. In step 2, for cracks with a width not greater than 2 mm, glue is poured or filled along the cracks, and excess glue on the surface is removed by a tool.

[0043] In step 2, for crack width greater than 2mm:

[0044] First, the wooden column 100 is reinforced as a whole, and reinforcement members are set to reinforce the top and bottom of the wooden column 100;

[0045] Install the positioning assembly, which is installed on the outside of the cracked or damaged part of the wooden column 100. A clamping plate 13 is installed on the positioning assembly. The clamping plate 13 is suitable for detachably installing the spraying part, which softens the cracked part.

[0046] The softened parts are then removed and chiseled. Softening can be done in a variety of ways, depending on the wood material, including chemical treatment, steam softening, and more.

[0047] The reinforcement member includes an upper abutment rod 1 and a lower abutment rod 2, and a transmission rod 3 is installed between the upper abutment rod 1 and the lower abutment rod 2. The transmission rod 3 is provided in multiple groups and distributed circumferentially around the wooden column 100;

[0048] The upper abutment rod 1 and the lower abutment rod 2 are bent rods. A connecting ring 1 4 is installed at the top connection between the upper abutment rod 1 and the transmission rod 3, and a connecting ring 2 5 is installed at the bottom connection between the lower abutment rod 2 and the transmission rod 3.

[0049] The connecting ring 1 4 and the connecting ring 2 5 are both two-petal type and are provided with two groups of connecting ears 6. Locking bolts are installed in the connecting ears 6 for locking.

[0050] The outer ends of the transmission rods 3 are each provided with a vertical groove 7, an outer ring plate 8 is installed in the vertical groove 7, and a clamping block is provided in the outer ring plate 8, and the clamping block is suitable for sliding in the vertical groove 7;

[0051] A vertical plate 10 is provided on the outer ring plate 8 , and a rotating part is installed outside the vertical plate 10 . The top of the rotating part is suitable for installing a spraying part.

[0052] The rotating member includes two sets of connecting rods 11, one end of each connecting rod 11 is rotatably connected to the vertical plate 10, and the other end of each connecting rod 11 is provided with a support cylinder 12, which is rotatably connected to the connecting rod 11;

[0053] A clamping plate 13 is installed on the top of the support tube 12, and a threaded rod 14 is installed on the bottom of the support tube 12. An internal threaded hole is provided in the support tube 12, and the threaded rod 14 is adapted to the internal threaded hole. An abutment plate 15 is installed on the bottom of the threaded rod 14.

[0054] A telescopic rod 16 is installed outside the outer ring plate 8, and a connecting piece 17 is installed on the output end of the telescopic rod 16. A connecting piece 2 18 is installed on the upper abutting rod 1 and / or the lower abutting rod 2. The connecting piece 17 and the connecting piece 2 18 are detachably connected.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0056] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for repairing and reinforcing defects in wooden columns of ancient buildings, characterized in that: The following steps are involved: Step 1, treating the cracked and damaged parts of the original wooden column (100): estimating the area that needs to be repaired, grinding and cleaning the surface of the wooden column (100) at the cracked or damaged parts, and cleaning the wood chips at the rotten parts, knots, and split parts; Step 2, using chemical coagulation materials for reinforcement: using epoxy resin and glass fiber mixture (200) to repair and reinforce the removed parts; For crack width greater than 2mm: First, the wooden column (100) is reinforced as a whole, and reinforcement pieces are provided to reinforce the top and bottom of the wooden column (100); Installing a positioning assembly, the positioning assembly is installed on the outside of the cracked or damaged part of the wooden column (100), and a clamping plate (13) is installed on the positioning assembly, and the clamping plate (13) is suitable for detachably installing a spraying part, and the spraying part softens the cracked part; Then remove and chisel the softened part; The reinforcing member comprises an upper abutting rod (1) and a lower abutting rod (2), a transmission rod (3) is installed between the upper abutting rod (1) and the lower abutting rod (2), and the transmission rod (3) is provided in multiple groups and circumferentially distributed around the wooden column (100); The upper abutting rod (1) and the lower abutting rod (2) are bent rods, a connecting ring 1 (4) is installed at the top connection point of the upper abutting rod (1) and the transmission rod (3), and a connecting ring 2 (5) is installed at the bottom connection point of the lower abutting rod (2) and the transmission rod (3); The connecting ring 1 (4) and the connecting ring 2 (5) are both two-petal type and are provided with two groups of connecting ears (6), and locking bolts are installed in the connecting ears (6) for locking; The outer ends of the transmission rods (3) are each provided with a vertical groove (7), an outer ring plate (8) is installed in the vertical groove (7), a clamping block is provided in the outer ring plate (8), and the clamping block is suitable for sliding in the vertical groove (7); A vertical plate (10) is provided on the outer ring plate (8), a rotating part is installed outside the vertical plate (10), and the top of the rotating part is suitable for installing a spraying part; The rotating member comprises two groups of connecting rods (11), one end of the connecting rod (11) is rotatably connected to the vertical plate (10), and the other end of the connecting rod (11) is provided with a support cylinder (12), and the support cylinder (12) is rotatably connected to the connecting rod (11); A clamping plate (13) is installed on the top of the support cylinder (12), a threaded rod (14) is installed on the bottom of the support cylinder (12), an internal threaded hole is provided in the support cylinder (12), the threaded rod (14) and the internal threaded hole are adapted, and an abutment plate (15) is installed on the bottom of the threaded rod (14); A telescopic rod (16) is installed outside the outer ring plate (8), a connecting piece (17) is installed on the output end of the telescopic rod (16), and a connecting piece (18) is installed on the upper abutting rod (1) and / or the lower abutting rod (2), and the connecting piece (17) and the connecting piece (18) are detachably connected; Step 3, beautification of the wooden gusset plate (300): use the wooden gusset plate (300) made of the same material as the wooden column (100), install it on the epoxy resin and glass fiber mixture (200) in step 2, and grind the joints to be flush with the original wooden column (100); Step 4, dark treatment of the entire carbon fiber hoop (400): a plurality of carbon fiber hoops (400) are provided along the length direction of the required reinforced wooden column (100), and concave seams are polished on the wooden column (100) at the provided positions so that the carbon fiber hoop (400) is flush with the wooden column (100) itself.

2. The method for repairing and reinforcing defects in wooden columns of ancient buildings according to claim 1, characterized in that: In step 2, for cracks with a width no greater than 2 mm, pour or fill glue along the gap, and use a tool to remove excess glue on the surface.

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