A friction energy dissipation support structure for ancient building wooden structures with a correction function

Abstract

This invention relates to the field of support structure technology for ancient wooden structures, specifically a friction-dissipating support structure for ancient wooden structures with a correction function. To address the problems of existing wooden support structures lacking the ability to restore the deformation of wooden columns and lacking self-recovery performance, this invention provides a new friction-dissipating support structure for ancient wooden structures with a correction function. The structure includes a wooden support member, one end of which is covered by a U-shaped fixed connecting plate hinged to a first clamp. The other end of the wooden support member is covered by an inner U-shaped connecting plate and an outer U-shaped connecting plate. A jack and a tension / compression spring are provided between the inner and outer U-shaped connecting plates. A screw and a nut are fixed to the right side of the middle arm plate of the outer U-shaped connecting plate, and a second clamp is hinged to the right side of the independent connecting plate. The friction-dissipating support structure of this invention not only achieves the friction-dissipating support function but also the correction function.

Description

Technical Field

[0001] This invention relates to the field of support structure technology for ancient wooden structures, specifically a friction energy dissipation support structure for ancient wooden structures with a correction function. Background Technology

[0002] Ancient wooden structures are immovable cultural relics of significant historical importance, accounting for more than half of all ancient buildings in my country. Due to erosion from the natural environment and the influence of human factors, existing ancient wooden structures have suffered adverse effects such as deterioration of wood properties, loosening of component connections, and reduction in the effective cross-section of components. This has significantly reduced the load-bearing capacity and lateral stiffness of ancient wooden structures. In particular, the tilting and deformation of wooden columns seriously threatens the safety of the structure. Therefore, enhancing the lateral stiffness of the structure and restoring some of the deformation is one of the urgent problems to be solved in the construction of ancient wooden structures.

[0003] Timber supports are key components for improving the lateral stiffness of ancient wooden structures. Friction-damping supports utilize sliding friction to dissipate energy, thereby improving the seismic performance of ancient wooden structures. Existing technologies, such as the friction-damping glued laminated timber support structure and its construction method described in application number 202011336424.7, while improving the lateral stiffness and seismic performance of ancient wooden structures, have the following shortcomings: 1) Most ancient wooden structures exhibit varying degrees of column tilting deformation, and this deformation tends to increase further. The friction-damping glued laminated timber support structure lacks the function of restoring column deformation; 2) Ancient wooden structures themselves possess self-restoring deformation characteristics during vibration. However, the friction-damping glued laminated timber support structure lacks this deformation-restoring property, requiring the ancient wooden structure to overcome friction within the support structure during deformation recovery. This weakens the deformation-restoring ability of the ancient wooden structure itself, leading to an increase in residual deformation within the structure. Summary of the Invention

[0004] In order to solve the problems of existing wooden support structures lacking the function of restoring the deformation of wooden columns and lacking the self-recovery performance of deformation, this invention provides a new friction energy dissipation support structure for ancient wooden structures with a correction function.

[0005] This invention is achieved using the following technical solution:

[0006] A friction-dissipating energy-absorbing support structure for ancient wooden structures with a correction function includes a wooden support member and independent connecting plates. One end of the wooden support member is covered with a U-shaped fixed connecting plate with its opening facing right. The left side of the U-shaped fixed connecting plate is hinged with a first clamp for securing it to one side of a wooden column in the ancient wooden structure. The other end of the wooden support member is covered with a U-shaped inner connecting plate with its opening facing left. The U-shaped inner connecting plate is covered with a U-shaped outer connecting plate. A reserved gap is provided between the right side of the middle arm plate of the U-shaped inner connecting plate and the left side of the middle arm plate of the U-shaped outer connecting plate. Both sides of the U-shaped outer connecting plate are provided with oblong grooves arranged along the length of the wooden support member. The two sides of the U-shaped inner connecting plate and the other end of the wooden support member are provided with first bolt holes. The grooves and first bolt holes are connected by matching first high-strength bolts and first high-strength nuts to the U-shaped outer connecting plate and the U-shaped inner connecting plate. The connection plate is fixed to the other end of the wooden support. A jack is provided within the reserved gap, with its fixed end fixed to the right side of the middle arm plate of the U-shaped inner connecting plate. The telescopic end of the jack is arranged along the length of the wooden support and can extend and retract outside the U-shaped outer connecting plate. A tension spring is also fixed within the reserved gap. The two ends of the tension spring are fixed to the right side of the middle arm plate of the U-shaped inner connecting plate and the left side of the middle arm plate of the U-shaped outer connecting plate, respectively. Screws are fixed to the front and back of the right side of the middle arm plate of the U-shaped outer connecting plate. The independent connecting plate is arranged parallel to the middle arm plate of the U-shaped outer connecting plate. The independent connecting plate has two screw holes. The independent connecting plate is slidably connected to the two screws through the two screw holes. Each screw is equipped with two nuts. The two nuts are located on the left and right sides of the independent connecting plate, respectively. A second clamp is hinged in the middle of the right side of the independent connecting plate for fixing to the wooden column on the other side of the ancient building's wooden structure.

[0007] Working process: When in use, fix the two clamps to the wooden posts on both sides respectively. In order to achieve the correction function in subsequent use, the second clamp needs to be fixed to the wooden post with the tendency to deform. Apply pre-tightening force to the first high-strength bolt and the first high-strength nut. The pre-tightening force causes the U-shaped inner connecting plate to contact the U-shaped outer connecting plate and generate friction. When the friction energy dissipation support function is required, tighten the two nuts. When the ancient wooden structure is subjected to external force, the U-shaped inner connecting plate and the U-shaped outer connecting plate will slide relative to each other, and the tension and compression springs will undergo tensile or compressive deformation. When the external force disappears, the tension and compression springs will drive the U-shaped inner connecting plate or the U-shaped outer connecting plate to return to its initial position, thus enabling the friction energy dissipation support structure to have deformation recovery capability and reduce the residual deformation of the ancient wooden structure. When the correction function is required, loosen the two nuts and start the jack. The jack will hold the independent connecting plate, and the U-shaped inner connecting plate and the wooden support will provide a reaction force for the jack, pushing the independent connecting plate to the right. This will cause the corresponding wooden column to produce a displacement opposite to its own tilt deformation direction, thereby correcting the wooden column. After the displacement is completed, the jack will stop moving. After the deformation of the ancient wooden structure stabilizes, the jack will be retracted to its original position, and then the two nuts will be tightened to restore its friction energy dissipation support function. During use, the system can switch between friction energy dissipation support and correction functions at any time according to the actual deformation of the ancient wooden structure. For wooden columns with large deformation, correction can be performed in small amounts and multiple times to avoid adverse effects on the wooden components of the ancient building.

[0008] Furthermore, on the left side of the U-shaped fixed connecting plate, two first ear plates are distributed front to back. A second ear plate, adapted to the first ear plate, is fixed on the first clamp. The first ear plate and the second ear plate are hinged to the first clamp and the U-shaped fixed connecting plate via a first pin, with the hinge axis arranged in the front-back direction. On the right side of the independent connecting plate, two third ear plates are distributed front to back. A fourth ear plate, adapted to the third ear plate, is fixed on the second clamp. The third ear plate and the fourth ear plate are hinged to the second clamp and the independent connecting plate via a second pin, with the hinge axis arranged in the front-back direction. The hinged structure is simple, stable, and easy to implement.

[0009] Furthermore, the two side arm plates of the U-shaped fixed connecting plate, the U-shaped inner connecting plate, and the U-shaped outer connecting plate are distributed front and back, further improving the stability of the overall structure.

[0010] Furthermore, each side arm of the U-shaped outer connecting plate is provided with two parallel sliding grooves, and each side arm of the U-shaped inner connecting plate and the other end of the support are provided with four bolt holes. The four bolt holes are paired up to fit the first sliding groove. There are four first high-strength bolts and four first high-strength nuts, which makes the connection between the other end of the U-shaped outer connecting plate, the U-shaped inner connecting plate, and the wooden support more stable and the energy consumption performance better.

[0011] Furthermore, four bolt holes are distributed on both sides of the U-shaped fixed connecting plate and one end of the wooden support. The U-shaped fixed connecting plate and one end of the wooden support are fixedly connected by four second high-strength bolts and four second high-strength nuts.

[0012] Furthermore, both ends of the first high-strength bolt are equipped with butterfly washers to improve the overall stability of the structure and facilitate the application of preload.

[0013] Furthermore, both the U-shaped outer connecting plate and the U-shaped inner connecting plate are sandblasted steel connectors, which facilitates energy dissipation through friction and improves their energy dissipation and vibration reduction effects.

[0014] Furthermore, both the first and second clamps are two-piece clamps, making the connection with the wooden post more secure.

[0015] The beneficial effects of this invention are as follows: The friction energy dissipation support structure described in this invention can not only realize the function of friction energy dissipation support and regulate the friction force generated by the support, but also correct the tilt of the wooden column; at the same time, the structure is simple to operate, will not damage the original wooden structure, and has small residual deformation; in addition, it can also realize deformation self-recovery. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the friction energy dissipation support structure described in this invention;

[0019] Figure 2 This is a schematic diagram of the state of the friction energy dissipation support structure of the present invention when it is performing its support function;

[0020] Figure 3 This is a schematic diagram of the state of the friction energy dissipation support structure described in this invention when it performs the correction function;

[0021] Figure 4 This is a schematic diagram of an application experiment of the friction energy dissipation support structure described in this invention;

[0022] Figure 5This is a comparison chart showing the friction energy dissipation effect of using the friction energy dissipation support structure described in this invention with that of not using the friction energy dissipation support structure described in this invention.

[0023] In the diagram: 1-Wooden support, 2-Wooden column, 3-U-shaped fixed connecting plate, 4-First clamp, 5-U-shaped inner connecting plate, 6-U-shaped outer connecting plate, 7-Slide groove, 8-First high-strength bolt, 9-First high-strength nut, 10-Jack, 11-Tension spring, 12-Screw, 13-Independent connecting plate, 14-Nut, 15-Second clamp, 16-First ear plate, 17-Second ear plate, 18-First pin, 19-Third ear plate, 20-Fourth ear plate, 21-Second pin, 22-Second high-strength bolt, 23-Second high-strength nut. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0025] In this description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0027] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] like Figure 1As shown, a friction energy-dissipating support structure for ancient wooden structures with a correction function includes a wooden support member 1 and an independent connecting plate 13. One end of the wooden support member 1 is covered with a U-shaped fixed connecting plate 3 with its opening facing right. The left side of the U-shaped fixed connecting plate 3 is hinged with a first clamp 4 for securing to one side of the wooden column 2 in the ancient wooden structure. The other end of the wooden support is covered with a U-shaped inner connecting plate 5 with its opening facing left. The U-shaped inner connecting plate 5 is covered with a U-shaped outer connecting plate 6. A reserved gap is provided between the right side of the middle arm plate of the U-shaped inner connecting plate 5 and the left side of the middle arm plate of the U-shaped outer connecting plate 6. Both sides of the U-shaped outer connecting plate 6 are provided with oblong grooves 7 arranged along the length direction of the wooden support member 1. The two sides of the U-shaped inner connecting plate 5 and the other end of the wooden support are provided with first bolt holes. The grooves 7 and the first bolt holes are connected to the wooden support by matching first high-strength bolts 8 and first high-strength nuts 9. At the other end, a jack 10 is fixed within the reserved gap, with its fixed end fixed to the right side of the intermediate arm plate of the U-shaped inner connecting plate 5. The telescopic end of the jack 10 is arranged along the length of the wooden support 1 and its telescopic end can extend and retract outside the U-shaped outer connecting plate 6. A tension / compression spring 11 is also fixed within the reserved gap. The two ends of the tension / compression spring 11 are respectively fixed to the right side of the intermediate arm plate of the U-shaped inner connecting plate 5 and the left side of the intermediate arm plate of the U-shaped outer connecting plate 6. The right side of the intermediate arm plate of the U-shaped outer connecting plate 6 Screws 12 are fixed at the front and back respectively. The independent connecting plate 13 is arranged parallel to the middle arm plate of the U-shaped outer connecting plate 6. The independent connecting plate 13 is provided with two screw holes. The independent connecting plate 13 is slidably connected to the two screws 12 through the two screw holes. Each screw 12 is equipped with two nuts 14. The two nuts 14 are located on the left and right sides of the independent connecting plate 13 respectively. A second clamp 15 is hinged to the middle of the right side of the independent connecting plate 13 for fixing to the wooden column 2 on the other side of the ancient building's wooden structure.

[0029] Working process: During use, fix the two clamps to the wooden posts 2 on both sides respectively. In order to achieve the correction function in subsequent use, the second clamp 15 needs to be fixed to the wooden post 2 with the tendency to deform. Apply pre-tightening force to the first high-strength bolt 8 and the first high-strength nut 9. The pre-tightening force causes the U-shaped inner connecting plate 5 to contact the U-shaped outer connecting plate 6 and generate friction. Figure 2 As shown, when the friction energy dissipation support function is required, tightening the two nuts 14 causes relative slippage between the U-shaped inner connecting plate 5 and the U-shaped outer connecting plate 6 when the ancient wooden structure is subjected to external force. The tension / compression spring 11 then undergoes tensile or compressive deformation. When the external force disappears, the tension / compression spring 11 drives the U-shaped inner connecting plate 5 or the U-shaped outer connecting plate 6 back to its initial position, thus enabling the friction energy dissipation support structure to have deformation recovery capability and reducing residual deformation of the ancient wooden structure. Figure 3As shown, when the correction function is needed, loosen the two nuts 14, activate the jack 10, which holds the independent connecting plate 13. The U-shaped inner connecting plate 5 and the wooden support 1 provide a reaction force to the jack 10, pushing the independent connecting plate 13 to the right. This causes the corresponding wooden column 2 to displace in the opposite direction to its own tilt deformation, thus correcting the deviation of the wooden column 2. After the displacement is complete, the jack 10 stops moving. Once the deformation of the ancient wooden structure has stabilized, retract the jack 10 to its original position and tighten the two nuts 14 to restore its friction energy dissipation support function. During use, the function can be switched between friction energy dissipation support and correction function at any time according to the actual deformation of the ancient wooden structure. For large deformation of the wooden column 2, correction can be performed in small amounts and multiple times to avoid adverse effects on the wooden components of the ancient building.

[0030] In specific implementation, two first ear plates 16 are distributed front to back on the left side of the U-shaped fixed connecting plate 3. A second ear plate 17 adapted to the first ear plate 16 is fixed on the first clamp 4. The first ear plate 16 and the second ear plate 17 are hinged to the first clamp 4 and the U-shaped fixed connecting plate 3 through a first pin 18, with the hinge axis arranged in the front-back direction. Two third ear plates 19 are distributed front to back on the right side of the independent connecting plate 13. A fourth ear plate 20 adapted to the third ear plate 19 is fixed on the second clamp 15. The third ear plate 19 and the fourth ear plate 20 are hinged to the second clamp 15 and the independent connecting plate 13 through a second pin 21, with the hinge axis arranged in the front-back direction. The hinge structure is simple, stable, and easy to implement.

[0031] In practice, the two side arm plates of the U-shaped fixed connecting plate 3, the U-shaped inner connecting plate 5, and the U-shaped outer connecting plate 6 are distributed front and back to further improve the stability of the overall structure.

[0032] In specific implementation, each side arm of the U-shaped outer connecting plate 6 is provided with two parallel sliding grooves 7, and each side arm of the U-shaped inner connecting plate 5 and the other end of the support are provided with four bolt holes. The four bolt holes are paired up to fit the first sliding groove 7. There are four first high-strength bolts 8 and four first high-strength nuts 9, which makes the connection of the other end of the U-shaped outer connecting plate 6, the U-shaped inner connecting plate 5, and the wooden support 1 more stable and the energy consumption performance better.

[0033] In practice, four bolt holes are distributed on both sides of the U-shaped fixed connecting plate 3 and one end of the wooden support 1. The U-shaped fixed connecting plate 3 and one end of the wooden support 1 are fixedly connected by four second high-strength bolts 22 and four second high-strength nuts 23.

[0034] In practice, both ends of the first high-strength bolt 8 are equipped with butterfly washers to improve the overall stability of the structure and facilitate the application of preload.

[0035] In practice, both the U-shaped outer connecting plate 6 and the U-shaped inner connecting plate 5 are sandblasted steel connectors, which facilitates energy dissipation through friction and improves their energy dissipation and vibration reduction effects.

[0036] In practice, both the first clamp 4 and the second clamp 15 are two-piece clamps, which make the connection with the wooden post 2 more secure.

[0037] like Figure 4 The diagram shown is an application experiment schematic of the friction energy dissipation support structure described in this invention. The structure was used to conduct quasi-static tests on 1:3 scaled wooden structure models before and after reinforcement. The tested models were based on the inner and outer grooved column frame structure of the second floor of Yingxian Wooden Pagoda, with a vertical load of 5 tons. Figure 5 A comparison of the hysteresis curves before and after reinforcement shows that the fullness of the hysteresis curve is significantly improved after adding the new energy-dissipating support structure. The hysteresis loop changes from an S-shape to a spindle shape, and the curve changes during loading and unloading are consistent with those without support, indicating that adding support does not change the original characteristics of the structure. Furthermore, the area of ​​the hysteresis curve after adding support is significantly larger than that without support, further demonstrating that the new support has a significant effect on improving the energy dissipation capacity of the structure and exhibits good stability in improving energy dissipation. This device has advantages such as low manufacturing cost, recoverable function, simple installation and operation, easy control, and reasonable stress distribution. It can be widely used in the reinforcement and correction of various ancient building structures, providing a new approach for the protection of related ancient architectural heritage.

[0038] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments, and they should all be covered within the protection scope of the claims.

Claims

1. A friction-dissipating energy-absorbing support structure for ancient wooden structures with a correction function, characterized in that, The system includes a wooden support member (1) and an independent connecting plate (13). One end of the wooden support member (1) is covered with a U-shaped fixed connecting plate (3) with its opening facing right. The left side of the U-shaped fixed connecting plate (3) is hinged with a first clamp (4) for securing to one side of the wooden column (2) in the ancient building's wooden structure. The other end of the wooden support member (1) is covered with a U-shaped inner connecting plate (5) with its opening facing left. The U-shaped inner connecting plate (5) is covered with a U-shaped outer connecting plate (6). The right side of the middle arm plate of the U-shaped inner connecting plate (5) is connected to the U-shaped inner connecting plate (6). A reserved gap is provided between the left side of the middle arm plate of the outer connecting plate (6). Both sides of the U-shaped outer connecting plate (6) are provided with elongated oval grooves (7) arranged along the length of the wooden support (1). The two sides of the U-shaped inner connecting plate (5) and the other end of the wooden support (1) are provided with first bolt holes. The grooves (7) and the first bolt holes are fixed to the other end of the U-shaped outer connecting plate (6), the U-shaped inner connecting plate (5) and the wooden support (1) by the matching first high-strength bolts (8) and first high-strength nuts (9). A jack (10) is provided within the gap, with its fixed end fixed to the right side of the intermediate arm plate of the U-shaped inner connecting plate (5). The telescopic end of the jack (10) is arranged along the length of the wooden support (1) and its telescopic end can extend and retract outside the U-shaped outer connecting plate (6). A tension spring (11) is also fixed within the reserved gap. The two ends of the tension spring (11) are respectively fixed to the right side of the intermediate arm plate of the U-shaped inner connecting plate (5) and the left side of the intermediate arm plate of the U-shaped outer connecting plate (6). The right side of the intermediate arm plate of the U-shaped outer connecting plate (6) is fixed with a jack (10) on the front and back respectively. The screw (12), the independent connecting plate (13) and the intermediate arm plate of the U-shaped outer connecting plate (6) are arranged in parallel. The independent connecting plate (13) is provided with two screw holes. The independent connecting plate (13) is slidably connected to the two screws (12) through the two screw holes. Each screw (12) is provided with two nuts (14). The two nuts (14) are located on the left and right sides of the independent connecting plate (13) respectively. The middle of the right side of the independent connecting plate (13) is hinged with a second clamp (15) for fixing to the wooden column (2) on the other side of the ancient building wooden structure.

2. The friction energy dissipation support structure for ancient wooden structures with correction function according to claim 1, characterized in that, Two first ear plates (16) are distributed on the front and back of the left side of the U-shaped fixed connecting plate (3). A second ear plate (17) adapted to the first ear plate (16) is fixed on the first clamp (4). The first ear plate (16) and the second ear plate (17) are hinged to the first clamp (4) and the U-shaped fixed connecting plate (3) through the first pin (18), and the hinge shaft is arranged in the front and back direction. Two third ear plates (19) are distributed on the front and back of the right side of the independent connecting plate (13). A fourth ear plate (20) adapted to the third ear plate (19) is fixed on the second clamp (15). The third ear plate (19) and the fourth ear plate (20) are hinged to the second clamp (15) and the independent connecting plate (13) through the second pin (21), and the hinge shaft is arranged in the front and back direction.

3. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 2, characterized in that, The two side arm plates of the U-shaped fixed connecting plate (3), the U-shaped inner connecting plate (5), and the U-shaped outer connecting plate (6) are distributed front and back.

4. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 3, characterized in that, Each side arm of the U-shaped outer connecting plate (6) is provided with two parallel sliding grooves (7). Each side arm of the U-shaped inner connecting plate (5) and the other end of the wooden support (1) are provided with four bolt holes. The four bolt holes are matched with the sliding grooves (7) in pairs. There are four first high-strength bolts (8) and four first high-strength nuts (9).

5. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 4, characterized in that, Four bolt holes are distributed on both sides of the U-shaped fixed connecting plate (3) and one end of the wooden support (1). The U-shaped fixed connecting plate (3) and one end of the wooden support (1) are fixedly connected by four second high-strength bolts (22) and four second high-strength nuts (23).

6. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 5, characterized in that, Both ends of the first high-strength bolt (8) are equipped with butterfly washers.

7. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 6, characterized in that, Both the U-shaped outer connecting plate (6) and the U-shaped inner connecting plate (5) are sandblasted steel connectors.

8. A friction energy-dissipating support structure for ancient wooden structures with correction function as described in claim 7, characterized in that, Both the first clamp (4) and the second clamp (15) are two-part clamps.

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