An earthquake-resistant joint structure of ancient building wood structure

Abstract

The application discloses an ancient building wood structure anti-seismic joint structure and relates to the technical field of ancient building anti-seismic reinforcing structure. The ancient building wood structure anti-seismic joint structure comprises a first clamp hoop sleeved on the outer wall of a wooden structure column; a second clamp hoop and a third clamp hoop installed on the outer wall of a wooden beam; a fixing assembly arranged at the end of the first clamp hoop, the second clamp hoop and the third clamp hoop; an oblique tie assembly arranged between the second clamp hoop and the first clamp hoop; and a wire body winding assembly symmetrically installed on the upper two sides of the second clamp hoop. When the first clamp hoop slides downward, the second clamp hoop is forced to move outward along the beam axis, the steel wire rope is instantly straightened, the pulling force is transmitted to the rotating block through the pull rod and the fixing ring, the rotating block rotates downward, the pressing force between the rubber end block and the top surface of the beam is increased in direct proportion, the friction surface shear force is increased accordingly, a "pulling force-rotation angle-positive pressure" self-locking mechanism is formed, the overall downward sliding of the clamp hoop which may occur is converted into local friction energy dissipation, the continuous displacement of the first clamp hoop is prevented, and the joint stiffness can be maintained.

Description

Technical Field

[0001] This invention relates to earthquake-resistant reinforcement technology for ancient buildings, specifically to an earthquake-resistant joint structure for wooden structures in ancient buildings. Background Technology

[0002] Ancient wooden structures refer to palaces, halls, towers, garden buildings, residences, and ancillary structures built before 1840 and used continuously, or rebuilt in later generations according to traditional forms and techniques, using timber as the main load-bearing material and employing traditional construction methods such as mortise and tenon joints, bracket sets, raised beams, and through-beams. These structures possess historical, artistic, scientific, and social value. Their structural system uses wooden columns, beams, purlins, and rafters to form a horizontal and vertical framework, with bracket sets serving as transitional nodes for vertical load transfer to the column grid. The flexible interlocking of mortise and tenon joints achieves an earthquake-resistant mechanism that prevents the house from collapsing even if the walls fall. At the same time, the natural mechanical differences between the horizontal and vertical grains of the wood form a multi-layered defense of "rigid-flexible-rigid". It also has the characteristics of renewable materials, convenient processing, and strong environmental adaptability. It is a material embodiment of the traditional Chinese architectural culture, construction techniques and philosophical thought of "harmony between man and nature". Now, many of them are listed as cultural relics protection units at various levels or world cultural heritage sites. They need to be repaired and their performance improved in accordance with the protection principles of "minimal intervention, reversibility and identifiability".

[0003] To compensate for the vulnerability of mortise and tenon joints in ancient wooden columns and beams to seismic activity during earthquakes, existing technologies often employ circumferential reinforcement using metal couplings such as metal sleeves, steel clamps, or steel plate-bolt kits. This involves placing one or two steel sleeves from top to bottom around the column joint area, then connecting the sleeves to the beam end fittings using angle steel or steel plates, aiming to utilize the strength and stiffness of steel to improve the joint's load-bearing capacity. However, these metal sleeves, when exposed to alternating temperature and humidity environments for extended periods, are susceptible to damage due to changes in the moisture content of the wood. Repeated drying and wetting expansion gradually loosens the sleeve, causing the shear force originally transmitted between the sleeve and the column through friction to decrease. This leads to irreversible slippage or deflection of the sleeve, shifting its designed stress point, causing a sudden decrease in joint stiffness, and a sharp reduction in hysteretic energy dissipation capacity. More seriously, the slippage of the sleeve creates new stress concentration zones on the column surface, which accelerates local wood grain splitting, resulting in secondary damage to the column where "the metal parts are not damaged but the wooden column cracks first." Ultimately, this causes the entire structure to collapse in subsequent earthquakes due to joint failure. Therefore, improvements to the existing technology are necessary. Summary of the Invention

[0004] The purpose of this invention is to provide a seismic-resistant joint structure for ancient wooden structures, in order to solve the problem that in the prior art, metal sleeves are subject to long-term shrinkage and swelling of wood, which causes slippage and displacement, resulting in displacement of the stress point of the joint, a sharp drop in stiffness, a sharp reduction in hysteretic energy dissipation capacity, and the formation of new stress concentration zones in the column, accelerating wood grain splitting, and ultimately causing the overall structure to collapse in subsequent earthquakes due to joint failure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a seismic-resistant joint structure for ancient wooden structures, comprising:

[0006] The first clamp fitted onto the outer wall of the wooden structural column;

[0007] The second and third clamps are installed on the outer wall of the wooden beam;

[0008] The fixing components are located at the ends of the first clamp, the second clamp, and the third clamp;

[0009] An oblique tie assembly is positioned between the second clamp and the first clamp;

[0010] The line winding assembly is symmetrically installed on both sides above the second clamp;

[0011] The third clamp is fixedly connected to a mounting base, which has an installation opening. Two plates are symmetrically fixed on the inner two side walls of the installation opening. A pivot is fixedly connected between the two plates and a rotating block is rotatably connected to the pivot. A rubber end block that abuts against the upper wall of the wooden crossbeam is fixedly connected to one end of the rotating block. A pull rod is fixedly connected to the upper end of the rotating block. Two fixing rings are symmetrically fixed at both ends of the pull rod. A steel wire rope that connects to the winding assembly of the line is fixedly connected to the outer wall of the fixing ring.

[0012] Furthermore, the fixing component includes a first connecting piece and a second connecting piece installed at the ends of the first clamp, the second clamp and the third clamp. A first through hole is provided through one side wall of the first connecting piece, and a second through hole is provided on one side wall of the second connecting piece. A bolt is inserted through both the first through hole and the second through hole. A locking nut is provided on one side of the second connecting piece and screwed onto the outer wall of the bolt.

[0013] Furthermore, a gasket is provided on one side of the second connecting piece, and the gasket abuts between the second connecting piece and the locking nut.

[0014] Furthermore, the oblique tie assembly includes a rotating assembly disposed on the first clamp and the second clamp. A lead screw is connected to the outer side of the first clamp via the rotating assembly. A screw cylinder is screwed to the outer wall of the end of the lead screw. An adapter rotating rod is rotatably connected to the inner wall of the tail end of the screw cylinder. The adapter rotating rod is connected to the second clamp via the rotating assembly disposed on the second clamp.

[0015] Furthermore, the rotating assembly includes two positioning plates fixedly connected to the first clamp and the second clamp, a horizontal shaft fixedly connected between the two positioning plates, a collar rotatably connected to the outer wall of the horizontal shaft, the outer wall of the collar located outside the first clamp being fixedly connected to one end of the lead screw, and the outer wall of the collar located on the second clamp being fixedly connected to one end of the adapter rotating rod.

[0016] Furthermore, the wire winding assembly includes a connecting block fixedly disposed on one side wall of a positioning plate on a second clamp. A slot frame is fixedly connected to one side wall of the connecting block. A winding shaft is rotatably connected through the slot frame. The lower outer wall of the winding shaft is fixedly connected to the end of the wire rope away from the fixing ring.

[0017] Furthermore, the slot frame has a U-shaped structure design.

[0018] Furthermore, two ratchet wheels are fixedly connected to the outer wall of the take-up shaft, and an elastic locking element is provided on the slot frame. The elastic locking element engages with the ratchet wheels to prevent the take-up shaft from reversing. The elastic locking element is bent into a U-shape, with both ends penetrating one side wall of the slot frame, and the ends are not coaxial.

[0019] Compared with the prior art, the present invention provides a seismic-resistant joint structure for ancient wooden structures. When the first clamp slides down, the second clamp is forced to move outward along the axis of the crossbeam. The steel wire rope is instantly straightened, and the tension is transmitted to the rotating block through the tie rod and the fixing ring, causing the rotating block to rotate downward around the pivot axis. The pressing force between the rubber end block and the top surface of the crossbeam increases proportionally, and the shear force of the friction surface increases accordingly, forming a "tension-rotation angle-normal pressure" self-locking mechanism. This transforms the possible overall slippage of the clamp into local friction energy dissipation, preventing the first clamp from continuing to move and maintaining the joint stiffness. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall external structure provided by the present invention;

[0022] Figure 2 This is a first-view structural schematic diagram provided for the present invention;

[0023] Figure 3 This is a partial structural schematic diagram provided by the present invention;

[0024] Figure 4 This is a partial structural schematic diagram provided by the present invention;

[0025] Figure 5 Provided by the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0026] Figure 6 Provided by the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. First clamp; 2. Second clamp; 3. Third clamp; 4. Mounting base; 5. Plate; 6. Pivot; 7. Rotating block; 8. Rubber end block; 9. Tie rod; 10. Fixing ring; 11. Steel wire rope; 12. First connecting piece; 13. Second connecting piece; 14. Bolt; 15. Locking nut; 16. Washer; 17. Lead screw; 18. Screw; 19. Adaptor rotating rod; 21. Positioning plate; 22. Horizontal shaft; 23. Collar; 24. Connecting block; 25. Groove frame; 26. Rewinding shaft; 27. Ratchet; 28. Elastic clamp. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] As attached Figure 1 To be continued Figure 6 As shown:

[0031] Example 1:

[0032] This invention provides a seismic-resistant joint structure for ancient wooden structures, comprising:

[0033] The first clamp 1 is fitted onto the outer wall of the wooden structural column;

[0034] The second clamp 2 and the third clamp 3 are installed on the outer wall of the wooden beam;

[0035] The fixing components are disposed at the ends of the first clamp 1, the second clamp 2, and the third clamp 3;

[0036] An oblique tie assembly is disposed between the second clamp 2 and the first clamp 1;

[0037] The line winding assembly is symmetrically installed on both sides above the second clamp 2;

[0038] The third clamp 3 is fixedly connected to a mounting base 4, which has an installation opening. Two plates 5 are symmetrically fixed to the inner two side walls of the installation opening. A pivot 6 is fixedly connected between the two plates 5, and a rotating block 7 is rotatably connected via the pivot 6. One end of the rotating block 7 is fixedly connected to a rubber end block 8 that abuts against the upper wall of the wooden crossbeam. A pull rod 9 is fixedly fixed to the upper end of the rotating block 7. Two fixing rings 10 are symmetrically fixed to both ends of the pull rod 9. The outer wall of each fixing ring 10 is fixedly connected to a wire winding assembly. The steel wire rope 11 is used to tie the second clamp 2 and the third clamp 3 together. Assuming that the first clamp 1 moves downward, the second clamp 2 moves outward along the crossbeam axially. The steel wire rope 11 is further stretched and stressed, which drives the rotating block 7 to rotate. When the rotating block 7 rotates, the rubber end block 8 at its end rotates and presses down against the upper wall of the crossbeam. The greater the tension, the greater the pressure. Then, due to the action of friction, the third clamp 3 cannot be moved. This further prevents the first clamp 1 and the second clamp 2 from shifting.

[0039] As can be seen from the above, when the first clamp 1 slides downward, the second clamp 2 is forced to move outward along the axis of the crossbeam. The wire rope 11 is instantly straightened, and the tension is transmitted to the rotating block 7 through the tie rod 9 and the fixed ring 10, causing the rotating block 7 to rotate downward around the pivot 6. The pressure of the rubber end block 8 against the top surface of the crossbeam increases proportionally, and the shear force of the friction surface increases accordingly, forming a "tension-rotation angle-normal pressure" self-locking mechanism. This transforms the possible overall slippage of the clamp into local friction energy dissipation, preventing the first clamp 1 from continuing to move and maintaining the node stiffness.

[0040] When the wire rope 11 is slack, the winding redundancy length of the winding assembly can be adjusted to ensure that the rubber end block 8 and the beam surface always maintain a preload of 0.1-0.3 mm, so as to avoid secondary loosening after the wooden column dries and shrinks.

[0041] The rubber end block 8 is made of Shore A 60° high-damping silicone rubber. Its contact surface is engraved with 1.5 mm deep transverse grooves. During the rotation and pressing process, it can embed microfibers on the surface of wood to form a dual-path force transmission of mechanical interlocking and friction. The interlocking depth increases with the increase of tension, which increases the ultimate friction coefficient from static 0.45 to dynamic 0.65. The critical load of sleeve slippage is increased by 2.3 times, realizing the seismic goal of "small displacement, large energy consumption, and zero slippage", and completely solving the secondary damage chain of "dry shrinkage loosening-slippage-column surface splitting" of traditional metal sleeves.

[0042] Example 2:

[0043] A seismic-resistant joint structure for ancient wooden buildings, comprising:

[0044] The first clamp 1 is fitted onto the outer wall of the wooden structural column;

[0045] The second clamp 2 and the third clamp 3 are installed on the outer wall of the wooden beam;

[0046] The fixing components are disposed at the ends of the first clamp 1, the second clamp 2, and the third clamp 3;

[0047] An oblique tie assembly is disposed between the second clamp 2 and the first clamp 1;

[0048] The line winding assembly is symmetrically installed on both sides above the second clamp 2;

[0049] The third clamp 3 is fixedly connected to a mounting base 4, which has an installation opening. Two plates 5 are symmetrically fixed to the inner two side walls of the installation opening. A pivot 6 is fixedly connected between the two plates 5, and a rotating block 7 is rotatably connected via the pivot 6. One end of the rotating block 7 is fixedly connected to a rubber end block 8 that abuts against the upper wall of the wooden crossbeam. A pull rod 9 is fixedly fixed to the upper end of the rotating block 7. Two fixing rings 10 are symmetrically fixed to both ends of the pull rod 9. The outer wall of each fixing ring 10 is fixedly connected to a wire winding assembly. The steel wire rope 11 is used to tie the second clamp 2 and the third clamp 3 together. Assuming that the first clamp 1 moves downward, the second clamp 2 moves outward along the crossbeam axially. The steel wire rope 11 is further stretched and stressed, which drives the rotating block 7 to rotate. When the rotating block 7 rotates, the rubber end block 8 at its end rotates and presses down against the upper wall of the crossbeam. The greater the tension, the greater the pressure. Then, due to the action of friction, the third clamp 3 cannot be moved. This further prevents the first clamp 1 and the second clamp 2 from shifting.

[0050] This embodiment is basically the same as the previous embodiment, except that, as shown in the appendix... Figure 1 and appendix Figure 6 As shown, in order to facilitate the fixing of the first clamp 1 to the outside of the wooden structural column and the fixing of the second clamp 2 and the third clamp 3 to the outer wall of the wooden beam, the fixing assembly includes a first connecting piece 12 and a second connecting piece 13 installed at the ends of the first clamp 1, the second clamp 2 and the third clamp 3. A first through hole is provided on one side wall of the first connecting piece 12, and a second through hole is provided on one side wall of the second connecting piece 13. A bolt 14 is inserted through the first through hole and the second through hole. A locking nut 15 is provided on one side of the second connecting piece 13 and screwed onto the outer wall of the bolt 14.

[0051] A gasket 16 is also provided on one side of the second connecting piece 13, and the gasket 16 abuts between the second connecting piece 13 and the locking nut 15.

[0052] As can be seen from the above, the bolt 14 and the locking nut 15 tighten the first connecting piece 12 and the second connecting piece 13, so that the first clamp 1, the second clamp 2 and the third clamp 3 form a closed circumferential constraint. The washer 16 generates elastic pressure between the locking nut 15 and the second connecting piece 13, which not only compensates for the relaxation of the pre-tightening force caused by the dry and wet deformation of the wood, but also avoids the hard metal directly squeezing the wood surface and causing local cross-grain crushing. This ensures that the clamps always maintain uniform surface contact under repeated loads, and the critical load for clamp slippage is increased by more than 30%.

[0053] Example 3:

[0054] A seismic-resistant joint structure for ancient wooden buildings, comprising:

[0055] The first clamp 1 is fitted onto the outer wall of the wooden structural column;

[0056] The second clamp 2 and the third clamp 3 are installed on the outer wall of the wooden beam;

[0057] The fixing components are disposed at the ends of the first clamp 1, the second clamp 2, and the third clamp 3;

[0058] An oblique tie assembly is disposed between the second clamp 2 and the first clamp 1;

[0059] The line winding assembly is symmetrically installed on both sides above the second clamp 2;

[0060] The third clamp 3 is fixedly connected to a mounting base 4, which has an installation opening. Two plates 5 are symmetrically fixed to the inner two side walls of the installation opening. A pivot 6 is fixedly connected between the two plates 5, and a rotating block 7 is rotatably connected via the pivot 6. One end of the rotating block 7 is fixedly connected to a rubber end block 8 that abuts against the upper wall of the wooden crossbeam. A pull rod 9 is fixedly fixed to the upper end of the rotating block 7. Two fixing rings 10 are symmetrically fixed to both ends of the pull rod 9. The outer wall of each fixing ring 10 is fixedly connected to a wire winding assembly. The steel wire rope 11 is used to tie the second clamp 2 and the third clamp 3 together. Assuming that the first clamp 1 moves downward, the second clamp 2 moves outward along the crossbeam axially. The steel wire rope 11 is further stretched and stressed, which drives the rotating block 7 to rotate. When the rotating block 7 rotates, the rubber end block 8 at its end rotates and presses down against the upper wall of the crossbeam. The greater the tension, the greater the pressure. Then, due to the action of friction, the third clamp 3 cannot be moved. This further prevents the first clamp 1 and the second clamp 2 from shifting.

[0061] This embodiment is basically the same as the previous embodiment, except that, as shown in the appendix... Figure 1 and appendix Figure 5As shown, in order to strengthen the connection between the beam and the column and increase the seismic strength, the oblique tie assembly includes a rotating assembly set on the first clamp 1 and the second clamp 2. A lead screw 17 is connected to the outer side of the first clamp 1 via the rotating assembly. A screw cylinder 18 is screwed to the outer wall of the end of the lead screw 17. An adapter rod 19 is rotatably connected to the inner wall of the tail end of the screw cylinder 18. The adapter rod 19 is connected to the second clamp 2 via the rotating assembly set on the second clamp 2.

[0062] The rotating assembly includes two positioning plates 21 fixedly connected to the first clamp 1 and the second clamp 2. A horizontal shaft 22 is fixedly connected between the two positioning plates 21. A collar 23 is rotatably connected to the outer wall of the horizontal shaft 22. The outer wall of the collar 23 located outside the first clamp 1 is fixedly connected to one end of the lead screw 17. The outer wall of the collar 23 located on the second clamp 2 is fixedly connected to one end of the adapter rotating rod 19.

[0063] As can be seen from the above, the lead screw 17, the screw barrel 18, and the adapter rotating rod 19 constitute an adjustable length diagonal rod. When the column and beam undergo relative displacement, the lead screw 17 is synchronously subjected to force in the screw barrel 18, converting the horizontal shear force into the axial tensile force in the screw barrel 18. The bolts 23 of the rotating components at both ends rotate freely around the horizontal axis 22, realizing "transmitting only axial force and not bending moment". This not only releases the rotation constraint of the node, but also provides additional diagonal bracing stiffness, thereby increasing the equivalent shear stiffness of the node and increasing energy consumption. Furthermore, the initial length can be quickly adjusted by rotating the screw barrel 18 to adapt to different column diameters and beam heights, achieving stepless pre-tensioning.

[0064] Example 4:

[0065] A seismic-resistant joint structure for ancient wooden buildings, comprising:

[0066] The first clamp 1 is fitted onto the outer wall of the wooden structural column;

[0067] The second clamp 2 and the third clamp 3 are installed on the outer wall of the wooden beam;

[0068] The fixing components are disposed at the ends of the first clamp 1, the second clamp 2, and the third clamp 3;

[0069] An oblique tie assembly is disposed between the second clamp 2 and the first clamp 1;

[0070] The line winding assembly is symmetrically installed on both sides above the second clamp 2;

[0071] The third clamp 3 is fixedly connected to a mounting base 4, which has an installation opening. Two plates 5 are symmetrically fixed to the inner two side walls of the installation opening. A pivot 6 is fixedly connected between the two plates 5, and a rotating block 7 is rotatably connected via the pivot 6. One end of the rotating block 7 is fixedly connected to a rubber end block 8 that abuts against the upper wall of the wooden crossbeam. A pull rod 9 is fixedly fixed to the upper end of the rotating block 7. Two fixing rings 10 are symmetrically fixed to both ends of the pull rod 9. The outer wall of each fixing ring 10 is fixedly connected to a wire winding assembly. The steel wire rope 11 is used to tie the second clamp 2 and the third clamp 3 together. Assuming that the first clamp 1 moves downward, the second clamp 2 moves outward along the crossbeam axially. The steel wire rope 11 is further stretched and stressed, which drives the rotating block 7 to rotate. When the rotating block 7 rotates, the rubber end block 8 at its end rotates and presses down against the upper wall of the crossbeam. The greater the tension, the greater the pressure. Then, due to the action of friction, the third clamp 3 cannot be moved. This further prevents the first clamp 1 and the second clamp 2 from shifting.

[0072] This embodiment is basically the same as the previous embodiment, except that, as shown in the appendix... Figure 1 To be continued Figure 5 As shown, in order to facilitate the straightening and stress application of the wire rope 11, the wire winding assembly includes a connecting block 24 fixedly mounted on one side wall of the positioning plate 21 on the second clamp 2. A slot frame 25 is fixedly connected to one side wall of the connecting block 24. A winding shaft 26 is rotatably connected through the slot frame 25. The lower outer wall of the winding shaft 26 is fixedly connected to the end of the wire rope 11 away from the fixing ring 10.

[0073] The slot frame 25 has a U-shaped structure design.

[0074] Two ratchet wheels 27 are fixedly connected to the outer wall of the take-up shaft 26. An elastic locking member 28 is provided on the slot frame 25. The elastic locking member 28 engages with the ratchet wheels 27 to prevent the take-up shaft 26 from reversing. The elastic locking member 28 is bent into a U-shape, with both ends penetrating one side wall of the slot frame 25, and the ends are not coaxial.

[0075] As can be seen from the above, the winding shaft 26 rotates unidirectionally within the slot frame 25 to wind up the wire rope 11. The ratchet 27 and the elastic clip 28 form a self-locking pawl mechanism, which immediately prevents reverse rotation after winding, ensuring that the wire rope 11 is always at the designed tension. The U-shaped slot frame 25 provides double-sided support for the winding shaft 26 to prevent the cantilever from bending. The elastic clip 28 has a double-end misalignment and passes through the slot frame 25 to form a double-point elastic reset, so that it will not dislodge even with long-term vibration, ensuring that the preload of the rubber end block 8 and the beam surface is constant.

[0076] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A seismic-resistant joint structure for ancient wooden buildings, characterized in that, include: The first clamp (1) is fitted onto the outer wall of the wooden structural column; The second clamp (2) and the third clamp (3) are installed on the outer wall of the wooden beam; The fixing components are disposed at the ends of the first clamp (1), the second clamp (2) and the third clamp (3); An oblique tie assembly is positioned between the second clamp (2) and the first clamp (1); The wire winding assembly is symmetrically installed on both sides above the second clamp (2); The third clamp (3) is fixedly connected to a mounting base (4). The mounting base (4) has an installation opening. Two plates (5) are symmetrically fixed on the inner two side walls of the installation opening. A pivot (6) is fixedly connected between the two plates (5). A rotating block (7) is rotatably connected through the pivot (6). A rubber end block (8) that abuts against the upper wall of the wooden crossbeam is fixedly connected to one end of the rotating block (7). A pull rod (9) is fixedly connected through the upper end of the rotating block (7). Two fixing rings (10) are symmetrically fixed at both ends of the pull rod (9). A steel wire rope (11) that connects to the winding assembly of the line is fixedly connected to the outer wall of the fixing ring (10).

2. The earthquake-resistant joint structure for ancient wooden structures according to claim 1, characterized in that, The fixing assembly includes a first connecting piece (12) and a second connecting piece (13) installed at the ends of the first clamp (1), the second clamp (2) and the third clamp (3). The first connecting piece (12) has a first through hole through one side wall, and the second connecting piece (13) has a second through hole through one side wall. The first through hole and the second through hole are both fitted with a bolt (14). The second connecting piece (13) has a locking nut (15) screwed onto the outer wall of the bolt (14) on one side.

3. The earthquake-resistant joint structure for ancient wooden structures according to claim 2, characterized in that, A gasket (16) is also provided on one side of the second connecting piece (13), and the gasket (16) abuts between the second connecting piece (13) and the locking nut (15).

4. The earthquake-resistant joint structure for ancient wooden structures according to claim 1, characterized in that, The oblique tie assembly includes a rotating assembly disposed on the first clamp (1) and the second clamp (2). A screw (17) is connected to the outer side of the first clamp (1) via the rotating assembly. A screw cylinder (18) is screwed to the outer wall of the end of the screw (17). An adapter rod (19) is rotatably connected to the inner wall of the tail end of the screw cylinder (18). The adapter rod (19) is connected to the second clamp (2) via the rotating assembly disposed on the second clamp (2).

5. A seismic-resistant joint structure for ancient wooden structures according to claim 4, characterized in that, The rotating assembly includes two positioning plates (21) fixedly connected to the first clamp (1) and the second clamp (2). A horizontal shaft (22) is fixedly connected between the two positioning plates (21). A collar (23) is rotatably connected to the outer wall of the horizontal shaft (22). The outer wall of the collar (23) located outside the first clamp (1) is fixedly connected to one end of the lead screw (17). The outer wall of the collar (23) located on the second clamp (2) is fixedly connected to one end of the adapter rotating rod (19).

6. The earthquake-resistant joint structure for ancient wooden structures according to claim 5, characterized in that, The wire winding assembly includes a connecting block (24) fixedly mounted on the side wall of the positioning plate (21) on the second clamp (2). A slot frame (25) is fixedly connected to one side wall of the connecting block (24). A winding shaft (26) is rotatably connected through the slot frame (25). The lower outer wall of the winding shaft (26) is fixedly connected to one end of the wire rope (11) away from the fixing ring (10).

7. A seismic-resistant joint structure for ancient wooden structures according to claim 6, characterized in that, The slot frame (25) has a U-shaped structure design.

8. A seismic-resistant joint structure for ancient wooden structures according to claim 6, characterized in that, Two ratchet wheels (27) are fixedly connected to the outer wall of the take-up shaft (26). An elastic clip (28) is provided on the slot frame (25). The elastic clip (28) engages with the ratchet wheels (27) to prevent the take-up shaft (26) from reversing. The elastic clip (28) is bent into a U-shape, and both ends of it penetrate through one side wall of the slot frame (25), and the ends of the two ends are not coaxial.

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