Stainless steel sheet equal-rigidity reinforcing structure for damaged mortise and tenon joint
By using beam and column clamps made of stainless steel sheets, combined with bolts, springs to adjust friction and limit seats, the problem of uneven stiffness after reinforcing damaged nodes in wooden structures was solved, achieving uniform stiffness distribution and preservation of appearance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2026-03-06
AI Technical Summary
The stiffness of damaged joints in existing wooden structures becomes uneven after reinforcement, making the reinforced joints susceptible to concentrated load effects and premature failure. Furthermore, traditional reinforcement methods affect the original appearance of the building.
The beam and column clamps, made of thin stainless steel sheets, adjust the friction through a combination of bolts and springs. Combined with the limiting seat fixing components, the rotational stiffness can be adjusted, and wood grain stickers are applied to the structural surface to preserve the original appearance.
This achieved a uniform distribution of stiffness between the damaged nodes and surrounding nodes, improving the stability and safety of the structure while maintaining the original appearance of the building.
Smart Images

Figure CN223974909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building structure technology, specifically a rigidity reinforcement structure such as stainless steel thin plates for damaged mortise and tenon joints. Background Technology
[0002] Among the numerous ancient buildings that have survived to this day in various provinces of my country, wooden structures account for a considerable proportion. Due to environmental factors and the length of their service life, the joints of wooden structures are prone to damage. Because these buildings have high historical significance, there is an urgent need for a suitable method to reinforce them. After proper reinforcement, the wooden joints can not only meet safety requirements but also adapt well to the current building usage requirements. Therefore, protecting and utilizing modern historical buildings is an important means of continuing the historical context of a city and showcasing its culture. It also has significant practical implications for the inheritance and development of national culture and the development of tourism economies in various regions.
[0003] Currently, the stiffness of existing damaged nodes in wooden buildings after reinforcement often far exceeds that of surrounding unreinforced nodes. This results in an uneven distribution of overall stiffness and uncoordinated horizontal displacement in the wooden frame, making the reinforced nodes susceptible to concentrated load effects and thus premature failure. Utility Model Content
[0004] The purpose of this invention is to provide a rigidity reinforcement structure for stainless steel thin plates and other materials with damaged tenons and mortises, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A rigidity reinforcement structure using stainless steel sheets for damaged mortise and tenon joints includes wooden columns, wooden beams, upper limit seats for the wooden columns, lower limit seats for the wooden columns, and beam clamps. Column clamps are installed on the wooden columns, with upper and lower limit seats respectively positioned above and below them. Limit seat fixing components are installed on both the upper and lower limit seats, which are then fixedly connected to the wooden columns via these components. A beam is fitted onto one end of the wooden beam connecting to the wooden column. A beam clamp is provided, and a wooden beam fixing component is installed through the beam clamp and the wooden beam. The beam clamp and the wooden beam are fixedly connected by the wooden beam fixing component. The beam clamp is welded to the column clamp. Both the wooden beam fixing component and the limiting seat fixing component include a screw and a hexagonal nut. The wooden beam has a through hole for the screw to pass through. The wooden column has a first through hole and a second through hole for the screw to pass through. Springs are fitted on both sides of the beam clamp on the screw of the wooden beam fixing component.
[0007] As a further embodiment of this utility model: both the upper limit seat and the lower limit seat of the wooden column include a stainless steel ring and a limiting plate. Two limiting plates are welded on the outer wall of the stainless steel ring, and the two limiting plates correspond vertically to the two wooden beams.
[0008] As a further improvement of this utility model: the exposed parts of the upper limit seat of the wooden column, the lower limit seat of the wooden column, the beam clamp and the column clamp are all covered with wood grain stickers.
[0009] As a further improvement of this utility model, the width of the limiting plate is equal to the width of the beam clamp.
[0010] As a further improvement of this utility model, the upper limit seat and the lower limit seat of the wooden column are set close to the beam clamp.
[0011] As a further improvement of this utility model, the column clamp has a small hole at the position of the first wooden column through hole and the second wooden column through hole to facilitate the passage of the screw.
[0012] As a further improvement of this utility model, the beam clamp and the column clamp are welded by argon arc welding.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model uses a "bolt + spring" connection between the beam clamp and the wooden beam. By adjusting the degree of screw tightening, the spring compression can be adjusted, thereby adjusting the friction between the beam clamp and the wooden beam. This allows for adjustment of the rotational stiffness of the joint, making the rotational stiffness of the reinforced damaged joint closer to that of the surrounding unreinforced joints. This avoids excessive increase in joint rotational stiffness caused by reinforcement, ensuring a uniform distribution of stiffness. It solves the defect of uneven stiffness in wooden structures after reinforcement using traditional methods, and has certain practical significance.
[0015] 2. The upper and lower limit seats of the wooden column of this utility model can reinforce the beam clamps in the vertical direction, prevent the upper and lower end faces of the beam clamps from being damaged by excessive pressure, and improve the stability of the structure.
[0016] 3. By applying wood grain stickers to the surface of the structure, this utility model can make the structure similar in color to the wooden columns and beams, thereby maximizing the preservation of the original appearance of the building. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure after the wood grain veneer has been applied.
[0019] Figure 3 This is a schematic diagram of the structure of the wooden pillars and beams of this utility model.
[0020] Figure 4 This utility model Figure 1 Schematic diagram of the upper limit seat and lower limit seat of the middle wooden column.
[0021] Figure 5 This utility model Figure 1 Enlarged view of the structure at point A in the middle.
[0022] 1. Wooden column; 2. Wooden beam; 3. Upper limit seat of wooden column; 4. Lower limit seat of wooden column; 5. Limit seat fixing component; 6. Beam clamp; 7. Wooden beam fixing component; 8. Wood grain sticker; 9. First wooden column perforation; 10. Second wooden column perforation; 11. Wooden beam perforation; 12. Stainless steel ring; 13. Limit plate; 14. Through hole; 15. Screw; 16. Hexagonal nut; 17. Spring; 18. Column clamp. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5In this embodiment of the utility model, a rigidity reinforcement structure for stainless steel thin plates and other materials for damaged mortise and tenon joints includes a wooden column 1, a wooden beam 2, an upper limit seat 3 for the wooden column, a lower limit seat 4 for the wooden column, and a beam clamp 6. A column clamp 18 is installed on the wooden column 1. The upper limit seat 3 and the lower limit seat 4 are respectively provided above and below the column clamp 18. Limit seat fixing components 5 are installed on both the upper limit seat 3 and the lower limit seat 4. Both the upper limit seat 3 and the lower limit seat 4 are fixedly connected to the wooden column 1 through the limit seat fixing components 5. The limit seat fixing components 5 on the upper limit seat 3 and the lower limit seat 4 are vertically offset in space. This design reduces the degree of damage to the wooden column 1 structure caused by perforation, ensuring that the structural strength of the wooden column 1 meets the usage requirements. A beam clamp 6 is fitted at one end of the wooden beam 2 connected to the wooden column 1, and a beam clamp 6 is inserted between the beam clamp 6 and the wooden beam 2. A through-type wooden beam fixing component 7 is installed. The beam clamp 6 and the wooden beam 2 are fixedly connected by the wooden beam fixing component 7. The beam clamp 6 is welded to the column clamp 18. Both the beam clamp 6 and the column clamp 18 are made of stainless steel sheet. The welding method of the beam clamp 6 and the column clamp 18 is argon arc welding. Since argon arc welding does not produce electric sparks, it improves the safety of the reinforcement process. The wooden beam fixing component 7 and the limiting seat fixing component 5 both include a screw 15 and a hexagonal nut 16. The wooden beam 2 has a wooden beam through hole 11 for easy passage of the screw 15. The wooden column 1 has a first wooden column through hole 9 and a second wooden column through hole 10 for easy passage of the screw 15. The screw 15 of the wooden beam fixing component 7 is fitted with springs 17 on both sides of the beam clamp 6. The column clamp 18 has a small hole for easy passage of the screw 15 at the position opposite to the first wooden column through hole 9 and the second wooden column through hole 10.
[0025] Please see Figure 1 , Figure 2 and Figure 4 Both the upper limit seat 3 and the lower limit seat 4 of the wooden column include a stainless steel ring 12 and a limiting plate 13. Two limiting plates 13 are welded on the outer wall of the stainless steel ring 12. The stainless steel ring 12 has through holes 14 for easy passage of screws. The two limiting plates 13 correspond to the two wooden beams 2 vertically. The width of the limiting plate 13 is equal to the width of the beam clamp 6. This design allows the limiting plate 13 to be aligned with both ends of the beam clamp 6, making the joint more aesthetically pleasing and facilitating the application of wood grain stickers 8. The upper limit seat 3 and the lower limit seat 4 of the wooden column are set close to the beam clamp 6. This setting can limit the vertical movement of the beam clamp 6, preventing damage to the bottom of the beam clamp 6 due to pressure or the upper part due to squeezing when the ends of the wooden beams are raised.
[0026] Please see Figure 2 The exposed parts of the upper limit seat 3, lower limit seat 4, beam clamp 6 and column clamp 18 of the wooden column are all covered with wood grain stickers 8. The wood grain stickers 8 make the structure similar in color to the wooden column 1 and wooden beam 2, thus maximizing the preservation of the original appearance of the building.
[0027] The working principle of this utility model is as follows:
[0028] During reinforcement, scaffolding is first erected, and the wooden beam 2 connected to the damaged wooden column is temporarily supported with steel pipes. The damaged wooden column is cut off, and a new wooden column 1 is made and treated to ensure that the new column can be installed smoothly in its original position, thus completing the replacement of the old and new wooden columns. Before installing the new wooden column 1, the upper limit seat 3, column clamp 18, and lower limit seat 4 of the wooden column are installed on it through the limit seat fixing component 5. Then, the wooden beam through hole 11 is drilled in the wooden beam 2, and the beam clamp 6 is installed on the wooden beam 2 through the wooden beam fixing component 7. During the installation process, the degree of screw 15 in the wooden beam fixing component 7 can be adjusted to adjust the degree of compression of the spring 17. The tighter the screw 15 is screwed, the tighter the spring 17 is compressed, the greater the friction between the beam clamp 6 and the wooden beam 2, and the greater the rotational stiffness of the node. When the wooden beam 2 rotates, a greater bending moment needs to be provided by the outside to overcome the friction. Then, the beam clamp 6 and the column clamp 18 are welded and fixed.
[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A stainless steel sheet rigidity reinforcement structure for damaged mortise and tenon joints, comprising a wooden column (1), a wooden beam (2), an upper limiting seat (3) on the wooden column, a lower limiting seat (4) on the wooden column, and a beam hoop (6), characterized in that: The wood column (1) is provided with a column hoop (18), the column hoop (18) is provided with a wood column upper limiting seat (3) and a wood column lower limiting seat (4) respectively, the wood column upper limiting seat (3) and the wood column lower limiting seat (4) are provided with a limiting seat fixing assembly (5), the wood column upper limiting seat (3) and the wood column lower limiting seat (4) are fixedly connected with the wood column (1) through the limiting seat fixing assembly (5), the wood beam (2) is provided with a beam hoop (6) at one end connected with the wood column (1), the beam hoop (6) and the wood beam (2) are provided with a wood beam fixing assembly (7) in a penetrating mode, the beam hoop (6) and the wood beam (2) are fixedly connected through the wood beam fixing assembly (7), the beam hoop (6) and the column hoop (18) are welded and fixed, the wood beam fixing assembly (7) and the limiting seat fixing assembly (5) comprise a screw rod (15) and a hexagonal nut (16), the wood beam (2) is provided with a wood beam perforation (11) for facilitating the penetration of the screw rod (15), the wood column (1) is provided with a first wood column perforation (9) and a second wood column perforation (10) for facilitating the penetration of the screw rod (15), the screw rod (15) of the wood beam fixing assembly (7) is provided with a spring (17) on both sides of the beam hoop (6).
2. The rigid reinforcing structure for damaged mortise-tenon according to claim 1, characterized in that: The wood column upper limiting seat (3) and the wood column lower limiting seat (4) comprise a stainless steel ring (12) and a limiting plate (13), the outer wall of the stainless steel ring (12) is welded with two limiting plates (13), and the two limiting plates (13) correspond to the wood beams (2) in an up-down mode.
3. The rigid reinforcing structure for damaged mortise-tenon according to claim 1, characterized in that: The wood column upper limiting seat (3), the wood column lower limiting seat (4), the beam hoop (6) and the column hoop (18) are provided with wood grain stickers (8) on exposed parts.
4. The rigid reinforcing structure for damaged mortise-tenon according to claim 2, characterized in that: The width of the limiting plate (13) is equal to the width of the beam hoop (6).
5. The thin stainless steel plate rigidity reinforcement structure for a damaged mortise and tenon joint according to claim 1, characterized in that: The wood column upper limiting seat (3) and the wood column lower limiting seat (4) are arranged close to the beam hoop (6).
6. The thin stainless steel plate rigidity reinforcement structure for a damaged mortise and tenon according to claim 1, characterized in that: The column hoop (18) is provided with a small hole for facilitating the penetration of the screw rod (15) at a position opposite to the first wood column perforation (9) and the second wood column perforation (10).
7. The thin stainless steel plate rigidity reinforcement structure for a damaged mortise and tenon joint according to claim 1, characterized in that: The welding mode of the beam hoop (6) and the column hoop (18) is argon arc welding.