Circular wooden column - perforated graphite hardwood - graphite layer - seismic isolation system along the column base stone

Abstract

This invention discloses a circular wooden column-perforated graphite hardwood-graphite layer-column base stone seismic isolation system, primarily used for seismic isolation and self-resetting at the base of circular wooden columns in timber structures. The system comprises a circular wooden column, perforated graphite hardwood, a concave spherical column base stone with limiting edge, a graphite layer, and a ring-shaped tempered glass sealing plate. The perforated graphite hardwood consists of a convex spherical section machined from a single piece of wood, a coarse cylindrical section, graphite holes, and a fine cylindrical connecting key. The fine cylindrical connecting key is inserted into the circular hole at the bottom of the circular wooden column for positioning and connection. The graphite layer reduces the friction between the convex spherical surface of the perforated graphite hardwood and the concave spherical surface of the column base stone. The concave spherical surface of the column base stone allows the circular wooden column to self-reset after an earthquake, and the limiting edge of the column base stone restricts excessive displacement of the bottom of the circular wooden column during vibration. The ring-shaped tempered glass sealing plate provides a waterproof seal. This seismic isolation system offers the advantages of reducing the seismic load on the superstructure through seismic isolation at the base of the circular wooden column and achieving structural resilience and seismic resistance through post-earthquake self-resetting.

Description

Technical Field

[0001] This invention relates to a seismic isolation system for a circular wooden column-holed graphite hardwood-graphite layer-concave spherical base stone with limiting, belonging to the field of seismic isolation technology in civil engineering. Background Technology

[0002] Currently, traditional timber structures pose significant seismic safety risks, necessitating improvements in their seismic resilience. Resilience, also known as recoverability, describes a system's ability to maintain and restore its original function after being subjected to disturbances. Building seismic resilience refers to a building's ability to maintain and restore its original function after encountering a specific level of earthquake. Improving the seismic resilience of traditional timber structures can be achieved through seismic-resistant technologies, vibration reduction and isolation technologies, or a combination of both. The circular wooden column of the traditional wooden structure is its vertical load-bearing component. The bottom of the circular wooden column is placed on the column base stone. There are two structural forms for the connection between the bottom of the circular wooden column and the column base stone: (1) The upper surface of the column base stone is flat, and the bottom of the circular wooden column is placed directly on the column base stone. Under the action of earthquake, the bottom of the wooden column and the column base stone form a sliding isolation structure. This structure has the advantage of reducing the earthquake action transmitted to the upper structure by the isolation effect of the bottom of the circular wooden column under the action of earthquake. However, it has the defect that the circular wooden column cannot be reset after sliding after the earthquake. This has been confirmed by a large number of earthquake damages. The inability of the circular wooden column to be reset after the earthquake makes the structure unable to maintain and restore its original function, and the seismic toughness is poor. (2) A groove is set in the center of the upper surface of the column base stone. The bottom of the circular wooden column or the wooden column protruding the wooden tenon is embedded in the groove on the upper part of the column base stone. Under the action of earthquake, the bottom of the wooden column and the column base stone form a non-slip isolation structure. The bottom of the circular wooden column cannot reduce the horizontal earthquake action transmitted to the upper structure like the sliding isolation. Although the bottom of the circular wooden column does not slide after the earthquake and remains in the original position, the seismic isolation performance is poor. The key technical bottleneck in improving the seismic toughness of traditional round wooden columns lies in how to update the structure between the bottom of the round wooden column and the column base stone to a sliding self-resetting seismic isolation structure. There is an urgent need to develop a seismic isolation system between the bottom of the round wooden column and the column base stone that can both slide for seismic isolation and self-reset after an earthquake. This system has the advantages of reducing the transmission of seismic motion from the bottom of the round wooden column to the upper structure and self-resetting after an earthquake, thus improving the structural toughness and seismic resistance.

[0003] Modern timber structures combine earthquake resistance and thermal insulation with short construction cycles. In recent years, timber-framed houses have seen a gradual increase in their proportion in new construction due to their advantages such as environmental friendliness, energy efficiency, and high construction efficiency. New types of cultural and tourism timber structures exhibit diverse shapes, employing round, square, L-shaped, T-shaped, and cross-shaped timber columns individually or in combination, depending on the building and load-bearing requirements. Therefore, using a seismic isolation system with concave spherical base stones as a key technical feature for timber columns of different cross-sectional shapes is not only necessary to ensure the earthquake safety of the timber structure but also to ensure the safety of interior decoration systems and water and electricity facilities under strong earthquakes. This effectively reduces post-earthquake repair costs and significantly improves the building's earthquake resilience.

[0004] Timber Structures for Mountain and Grassland Cultural Tourism Buildings: When timber frame structures or timber frame-timber wall panel structures are used in mountain and grassland cultural tourism buildings, the floor system at the bottom usually adopts an elevated platform structure with bamboo or composite flooring laid on top. The purpose is to prevent corrosion and moisture, adapt to the terrain, protect the ecology, and strengthen the connection between the frame columns. A seismic isolation system with circular timber columns, perforated graphite hardwood, graphite layers, and concave spherical bands along the column base stones is used between the elevated platform structure and the ground. Short timber columns with circular cross-sections need to be set within the elevated height. The length of the short timber columns is related to the slope of the site. This can enable the timber structure building to maintain its original function or restore its original function under a major earthquake, significantly improving its seismic toughness. Summary of the Invention

[0005] This invention discloses a seismic isolation system consisting of a circular wooden column, perforated graphite hardwood, a graphite layer, and a concave spherical base stone with a limiting edge. It is primarily used for seismic isolation and self-resetting of the base of a circular wooden column in a timber structure. The system comprises a circular wooden column, perforated graphite hardwood, a concave spherical base stone with a limiting edge, a graphite layer, and a ring-shaped tempered glass sealing plate. The perforated graphite hardwood is composed of a convex spherical section processed from a single piece of wood, a coarse cylindrical section, perforated graphite holes, and a fine cylindrical connecting key. The fine cylindrical connecting key is inserted into the circular hole at the bottom of the circular wooden column for positioning and connection. The graphite layer reduces the friction between the convex spherical surface of the perforated graphite hardwood and the concave spherical surface of the base stone. The concave spherical surface of the base stone allows the circular wooden column to self-reset after an earthquake, and the limiting edge of the base stone restricts excessive displacement of the bottom of the circular wooden column during vibration. The ring-shaped tempered glass sealing plate provides a waterproof seal. This seismic isolation system offers the advantages of reducing the seismic load on the superstructure through seismic isolation at the base of the circular wooden column and achieving structural resilience and seismic resistance through self-resetting after an earthquake. A circular wooden column-perforated graphite hardwood-graphite layer-column base stone seismic isolation system includes a circular wooden column, perforated graphite hardwood, and a concave spherical base stone with limiting function; the bottom of the circular wooden column is embedded and connected to the upper part of the perforated graphite hardwood, and the lower part of the perforated graphite hardwood is in contact with the concave spherical base stone with limiting function.

[0006] The concave spherical surface with limiting edge has a groove on the upper part of the column base stone, and the groove is vertically processed into a concave spherical surface. The circumference of the concave spherical surface is a circular limiting edge. The lower part of the graphite hardwood with hole is sealed and connected to the circular limiting edge by a ring tempered glass sealing plate. The surface of the concave spherical surface is filled with a graphite layer.

[0007] The perforated graphite hardwood is constructed from a single piece of wood, consisting of a convex spherical segment, a coarse cylindrical segment, and a fine cylindrical connecting key arranged from bottom to top. The bottom of the circular wooden column has a cylindrical hole in the center. The diameter and length of the fine cylindrical connecting key are identical to the diameter and depth of the cylindrical hole at the bottom of the circular wooden column, and the fine cylindrical connecting key is embedded into the cylindrical hole at the bottom of the circular wooden column. The curvature of the convex spherical segment is equal to that of the concave spherical segment. The perforated graphite hardwood has vertical perforations that extend from the upper surface of the coarse cylindrical segment to the convex spherical surface on the lower surface and are radially distributed along the coarse cylindrical segment. The oblique perforations extend downwards along the side of the coarse cylindrical segment and extend through the vertical perforations, and are circumferentially distributed along the coarse cylindrical segment. The graphite storage holes are used to store graphite. When an earthquake occurs, the seismic isolation system is activated, and the graphite in the vertical graphite storage holes flows out to replenish the graphite layer on the concave spherical surface of the column base stone, thereby enhancing the seismic isolation effect. When the amount of graphite in the vertical graphite storage holes is insufficient, it is supplemented through the oblique graphite storage holes.

[0008] During construction, graphite is first laid between the convex spherical section and the concave spherical section. After all sections are in place, graphite is then injected through the side holes of the coarse cylindrical section of the hardwood with graphite holes to form a graphite hole structure. After the graphite injection is completed, the side holes of the coarse cylindrical section are sealed with small round logs.

[0009] The circular wooden column is a circular cross-section wooden column processed from logs such as pine. The bottom center of the circular wooden column has a hole with a diameter of not less than 1 / 2 the diameter of the circular wooden column and a depth of not less than 1.5 times the diameter.

[0010] The aforementioned perforated graphite hardwood is composed of a convex spherical section, a coarse cylindrical section, graphite-containing holes, and a fine cylindrical connecting key, all processed from a single piece of wood. The hardwood is made from hard, broad-leaved wood such as oak, teak, and beech. The diameter and length of the fine cylindrical connecting key are consistent with the diameter and depth of the circular hole at the bottom of the circular wooden column. The curvature of the convex spherical surface of the perforated graphite hardwood is equal to the curvature of the concave spherical surface of the column base stone.

[0011] The aforementioned graphite-containing holes consist of four symmetrically arranged vertical circular holes that extend from the top of the coarse hardwood cylinder containing the graphite to the convex spherical surface below, and four oblique circular holes that slope downwards from the side of the coarse hardwood cylinder containing the graphite and connect to the four vertical circular holes. During construction, a small amount of graphite is first laid between the convex spherical surface of the hardwood cylinder containing the graphite and the concave spherical surface of the column base stone. After all the graphite is in place, graphite is poured in through the side holes of the coarse hardwood cylinder section to form the graphite-containing structure. After the graphite is poured in, the side holes of the coarse cylindrical section are sealed with small round logs.

[0012] The thin cylindrical connecting key has the same size as the bottom hole of the round wooden column. The thin cylindrical connecting key is used to insert into the bottom hole of the round wooden column to achieve positioning and docking.

[0013] The connection between the perforated graphite hardwood and the bottom of the circular wooden column is achieved by first applying structural adhesive to the upper surface of the perforated graphite hardwood and the surface of the thin cylindrical connecting key, and then inserting the perforated graphite hardwood thin cylindrical connecting key into the round hole at the bottom of the circular wooden column.

[0014] The concave spherical column base stone is a round, drum-shaped, or square column base stone with a cylindrical groove on the upper part, which is processed from granite such as bluestone and the groove is processed downward into a concave spherical surface.

[0015] The graphite layer mentioned above is a graphite layer laid on the concave spherical surface of the column base stone with a limiting function, and it serves as a lubricant.

[0016] The aforementioned annular tempered glass cover plate is an 8mm thick annular tempered glass cover plate. A 10mm x 10mm square sponge strip is adhered around the perimeter of the annular tempered glass cover plate. The sponge strip is recessed 10mm from the outer edge to create space for sealant. The square sponge strip prevents the annular tempered glass from colliding with the column base's limiting edge during the sliding of the wooden column. During construction, the annular tempered glass cover plate is first inserted approximately 300mm from the bottom of the column. Four symmetrically arranged self-tapping screws and small wooden blocks are used to connect the cover plate to the wooden column below, supporting the cover plate. After the seismic isolation system is installed, the self-tapping screws and small wooden blocks are removed, and the annular tempered glass cover plate is lowered into place. Finally, the joint between the annular tempered glass cover plate and the wooden column, as well as the area where the square sponge strip contacts the column base with the concave spherical limiting edge, is sealed with silicone sealant.

[0017] To achieve the above objectives, the present invention adopts the following technical solution:

[0018] Compared with the prior art, the present invention relates to a circular wooden column-holed graphite hardwood-graphite layer-concave spherical band limiting seismic isolation system along the column base stone, which has the following advantages:

[0019] (1) The perforated graphite hardwood and concave spherical limiting column base stone of the circular wooden column-hole graphite hardwood-graphite layer-concave spherical limiting column base stone of the present invention can be standardized in design and industrialized in preparation. The cost is low, the assembly and construction are convenient, and it is easy to promote and apply.

[0020] (2) The wood of the hole-filled graphite hardwood, the stone of the concave spherical limit column base stone and the graphite of the graphite layer of the seismic isolation system are all materials with stable physical and chemical properties and good durability.

[0021] (3) The graphite layer of the seismic isolation system can reduce the friction between the convex spherical surface of the porous graphite hardwood and the concave spherical surface of the column base stone. The concave spherical surface of the column base stone plays the role of self-resetting of the circular wooden column under its own weight after the earthquake. The column base stone limiter plays the role of limiting the excessive displacement of the bottom of the circular wooden column during the vibration. The seismic isolation system has the function of reducing the seismic effect of the upper structure by isolating the bottom of the circular wooden column and can self-reset after the earthquake, thus realizing the structural toughness and earthquake resistance.

[0022] (4) This seismic isolation system can be used for the seismic isolation and renovation of the bottom of the circular wooden columns of existing wooden houses, as well as for the seismic isolation of the circular wooden columns of newly built wooden houses. The bottom of the renovated circular wooden column has the function of sliding seismic isolation, limiting excessive sliding and self-resetting after the earthquake, which significantly improves the seismic toughness of the existing wooden column. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a seismic isolation system consisting of a circular wooden column, a perforated graphite hardwood core, a graphite layer, and a concave spherical base with limiting dimensions.

[0024] Figure 2 This is a schematic diagram of the cross-section of the graphite hardwood found in the cave.

[0025] Figure 3 This is a schematic diagram of the concave spherical surface with a limiting feature along the column base stone and its cross-section. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] The technical solution adopted in this invention is a circular wooden column-holed graphite hardwood-graphite layer-column base stone seismic isolation system, including a circular wooden column 1, a holed graphite hardwood 3, and a concave spherical column base stone with limiting function 9; the bottom of the circular wooden column 1 is embedded and connected to the upper part of the holed graphite hardwood 3, and the lower part of the holed graphite hardwood 3 is in contact with the concave spherical column base stone 9.

[0028] The concave spherical surface with limiting edge has a groove on the upper part of the column base stone 9, and the groove is vertically processed into a concave spherical surface 11. The circumferential direction of the concave spherical surface 11 is a circular limiting edge 10. The lower part of the hole-hidden graphite hardwood 3 is sealed and connected to the circular limiting edge 10 by a ring tempered glass sealing plate 12. The surface of the concave spherical surface 11 is filled with a graphite layer 8.

[0029] The perforated graphite hardwood 3 is composed of a convex spherical segment 4, a coarse cylindrical segment 5, and a fine cylindrical connecting key 7 arranged from bottom to top, all processed from a single piece of wood. A cylindrical hole 2 is located at the bottom center of the circular wooden column 1. The diameter and length of the fine cylindrical connecting key 7 are identical to the diameter and depth of the cylindrical hole 2 at the bottom of the circular wooden column, and the fine cylindrical connecting key 7 is embedded into the cylindrical hole 2 at the bottom of the circular wooden column. The curvature of the convex spherical segment 4 is equal to the curvature of the concave spherical surface 11. The perforated graphite hardwood 3 has graphite holes 6. The vertical graphite holes 6 penetrate the convex spherical surface from the upper surface of the coarse cylindrical segment 5 to the lower surface and are radially distributed along the coarse cylindrical segment 5. The oblique graphite holes 6 slope downwards along the side of the coarse cylindrical segment 5 and penetrate the vertical graphite holes 6, and are circumferentially distributed along the coarse cylindrical segment 5. The graphite storage hole 6 is used to store graphite. When an earthquake occurs, the seismic isolation system is activated, and the graphite in the vertical graphite storage hole 6 flows out to replenish the graphite layer 8 on the concave spherical surface 11 of the column base stone, thereby enhancing the seismic isolation effect. When the amount of graphite in the vertical graphite storage hole 6 is insufficient, it is supplemented through the oblique graphite storage hole 6.

[0030] During construction, graphite is first laid between the convex spherical section 4 and the concave spherical section 11. After all sections are in place, graphite is then injected through the side holes of the coarse cylindrical section of the hardwood with hole-filled graphite to form a hole-filled graphite structure. After the graphite injection is completed, the side holes of the coarse cylindrical section are sealed with small round logs.

[0031] Furthermore, the circular wooden column 1 is a circular cross-section wooden column made from logs such as pine.

[0032] Furthermore, a hole with a diameter not less than 1 / 2 the diameter of the circular wooden column 1 and a depth not less than 1.5 times the diameter is machined in the middle of the bottom of the circular wooden column 1.

[0033] Furthermore, the perforated graphite hardwood 3 is made from hard, broad-leaved wood logs such as oak, teak, and beech.

[0034] Furthermore, the size of the thin cylindrical connecting key 7 is the same as the size of the bottom round hole of the round wooden column 1, and the thin cylindrical connecting key 7 is used to insert into the bottom round hole of the round wooden column 1 to achieve positioning and docking.

[0035] Furthermore, to connect the perforated graphite hardwood 3 to the bottom of the circular wooden column 1, structural adhesive is first applied to the upper surface of the perforated graphite hardwood and the surface of the thin cylindrical connecting key, and then the perforated graphite hardwood thin cylindrical connecting key is inserted into the round hole at the bottom of the circular wooden column to achieve the connection between the two.

[0036] Furthermore, the concave spherical limiting column base stone 9 is a round or drum-shaped column base stone, or a square column base stone, made of granite such as bluestone, with a cylindrical groove on the upper part and the groove being processed downward into a concave spherical surface.

[0037] Furthermore, the graphite layer 8 is laid on the concave spherical surface of the column base stone with limiting function, and plays a lubricating role.

[0038] Furthermore, the aforementioned annular tempered glass cover plate 12 is an 8mm thick annular tempered glass cover plate. A 10mm x 10mm square sponge strip is pasted around the perimeter of the annular tempered glass cover plate. The sponge strip is recessed 10mm from the outer edge to create space for sealant. The square sponge strip prevents the annular tempered glass from colliding with the column base stone's limiting edge during the sliding process of the wooden column. During construction, the annular tempered glass cover plate is first inserted approximately 300mm from the bottom of the column. Four symmetrically arranged self-tapping screws and small wooden blocks are used to connect the cover plate to the wooden column below, supporting the cover plate. After the seismic isolation system is installed, the self-tapping screws and small wooden blocks are removed, and the annular tempered glass cover plate is lowered into place. Then, the joint between the annular tempered glass cover plate and the wooden column, as well as the position of the square sponge strip that contacts the column base stone with the concave spherical limiting edge, are sealed with sealant. Example

[0039] A seismic isolation system along the column base stone with circular wooden column-hole-holed graphite hardwood-graphite layer-concave spherical surface and limiting is proposed. Figure 1 ), Kongzang graphite hardwood ( Figure 2 ), concave spherical surface with limiting along the column base stone ( Figure 3 ): 1. Circular wooden column; 2. Circular wooden column bottom cylindrical hole; 3. Hole containing graphite hardwood; 4. Convex spherical section; 5. Coarse cylindrical section; 6. Graphite hole; 7. Fine cylindrical connecting key; 8. Graphite layer; 9. Concave spherical column base stone with limiting edge; 10. Circular limiting edge; 11. Concave spherical surface; 12. Circular tempered glass sealing plate.

[0040] The circular wooden post 1 is a circular cross-section wooden post made from pine or other logs. A cylindrical hole 2 is machined at the bottom of the circular wooden post. The diameter of the cylindrical hole 2 at the bottom of the circular wooden post is not less than 1 / 2 of the diameter of the circular wooden post, and the depth of the hole is not less than 1.5 times the diameter of the circular hole.

[0041] The aforementioned graphite-containing hardwood 3 consists of a convex spherical section 4, a coarse cylindrical section 5, graphite-containing holes 6, and a fine cylindrical connecting key 7, all processed from a single piece of wood.

[0042] The convex spherical segment 4 has the same curvature as the concave spherical surface of the column base stone.

[0043] The aforementioned coarse cylindrical segment 5 has a diameter equal to that of the circular wooden column.

[0044] The graphite-containing hole 6 consists of four vertical circular holes arranged symmetrically, which are open to the convex spherical surface below from the top of the graphite-containing hardwood cylinder, and four oblique circular holes that are inclined downward from the side of the graphite-containing hardwood cylinder and are connected to the four vertical circular holes.

[0045] The thin cylindrical connecting key 7: The thin cylindrical connecting key is inserted into the round hole at the bottom of the round wooden column to achieve positioning and docking.

[0046] The graphite layer 8 is laid between the concave spherical surface 11 of the concave spherical base stone 9 and the convex spherical section 4 of the graphite hardwood with holes, and the graphite plays a role in lubrication and reducing friction.

[0047] The concave spherical limiting edge column base stone 9 is a round pier-shaped column base stone, drum-shaped column base stone, or square pier-shaped column base stone with a cylindrical groove on the upper part and the groove facing downwards as a concave spherical surface 11, and the annular limiting edge 12 formed by the upper cylindrical groove as a structural feature.

[0048] The aforementioned annular tempered glass sealing plate 12 is made by cutting ordinary annealed glass into a ring shape according to the required dimensions, then heating it to near its softening point, and then rapidly and uniformly cooling it.

[0049] The perforated graphite hardwood 3 consists of, from top to bottom, a thin cylindrical connecting key 7, a thick cylindrical section with graphite-containing holes, and a convex spherical section. The thin cylindrical connecting key is the structure connecting to the upper wooden column, extending into the cylindrical hole 2 at the bottom of the circular wooden column, ensuring a reliable connection between the perforated graphite hardwood 3 and the circular wooden column 1. The thick cylindrical section with graphite-containing holes is both the main body of the perforated graphite hardwood 3 and the structure storing graphite. Graphite is stored in the graphite-containing holes 6. When the structure reacts to an earthquake, the seismic isolation system is activated, releasing the graphite stored in the graphite-containing holes 6 and replenishing the graphite layer 8. The graphite layer 8 reduces the friction between the convex spherical surface of the perforated graphite hardwood and the concave spherical surface of the column base stone, ensuring the seismic isolation effect. The convex spherical section has the same curvature as the concave spherical surface 11 of the column base stone. The concave spherical surface of the column base stone allows the perforated graphite hardwood 3 with the convex spherical section to self-reset after an earthquake, thereby achieving the self-resetting of the circular wooden column after an earthquake.

[0050] When updating the seismic isolation system at the base of the circular wooden columns of an existing wooden structure, the dimensions of the circular wooden columns and the column base stones are measured first. The stress requirements are calculated based on the seismic fortification intensity. The dimensions of the perforated graphite hardwood and the dimensions of the concave spherical limiter along each part of the column base stone are determined based on the dimensions of the existing circular wooden columns and the stress requirements. The stress calculation of the seismic isolation system is then performed, and the components are prepared, transported, and assembled on-site. Construction process: First, the existing circular wooden column is fixed with a rigid frame. Then, holes are drilled in the middle of the bottom section of the circular wooden column and a hole-embedded graphite hardwood is installed. Next, the original column base stone is replaced with a concave spherical column base stone with a limiting edge. A small amount of graphite is first laid between the convex spherical surface of the hole-embedded graphite hardwood and the concave spherical surface of the column base stone. After all are in place, graphite is poured into the side holes of the thick cylindrical section of the hole-embedded graphite hardwood to form a hole-embedded graphite structure. After the graphite is poured in, the side holes of the thick cylindrical section are sealed with small round logs. Finally, after the annular tempered glass sealing plate is in place, it is sealed with glass glue to the upper edge of the circular wooden column and the column base stone.

[0051] For newly constructed timber structures, the dimensions of the circular timber columns, the dimensions of the perforated graphite hardwood, and the dimensions of the concave spherical base stones along the column bases are first determined based on the structural design and stress requirements. Then, stress calculations are performed on the seismic isolation system, and components are prepared, transported, and assembled on-site.

[0052] The above is a typical embodiment of the present invention, and the implementation of the present invention is not limited thereto.

Claims

1. A circular wooden column-perforated graphite hardwood-graphite layer-seismic isolation system along the column base stone, characterized in that: It includes a circular wooden column (1), a perforated graphite hardwood (3), and a concave spherical base stone with a limiting edge (9); the bottom of the circular wooden column (1) is embedded and connected to the upper part of the perforated graphite hardwood (3), and the lower part of the perforated graphite hardwood (3) is in contact with the concave spherical base stone with a limiting edge (9). The concave spherical surface with limiting edge has a groove on the upper part of the column base stone (9), and the groove is vertically processed into a concave spherical surface (11). The circumferential direction of the concave spherical surface (11) is a circular limiting edge (10). The lower part of the hole-hidden graphite hardwood (3) is sealed to the circular limiting edge (10) by a ring tempered glass sealing plate (12). The surface of the concave spherical surface (11) is filled with a graphite layer (8). The perforated graphite hardwood (3) is composed of a convex spherical section (4), a coarse cylindrical section (5), and a fine cylindrical connecting key (7) arranged from bottom to top from a whole piece of wood. The bottom of the circular wooden column (1) is provided with a cylindrical hole (2) at the bottom center. The diameter and length of the fine cylindrical connecting key (7) are the same as the diameter and depth of the cylindrical hole (2) at the bottom of the circular wooden column. The fine cylindrical connecting key (7) is embedded and connected to the cylindrical hole (2) at the bottom of the circular wooden column. The curvature of the convex spherical segment (4) is equal to that of the concave spherical segment (11); the graphite-containing hardwood (3) has graphite-containing holes (6), the vertical graphite-containing holes (6) are arranged radially along the convex spherical surface of the upper surface of the coarse cylindrical segment (5) and the horizontal graphite-containing holes (6) are arranged circumferentially along the side of the coarse cylindrical segment (5) and are connected to the vertical graphite-containing holes (6).

2. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The circular wooden column (1) is a circular cross-section wooden column made from logs.

3. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The bottom of the circular wooden column (1) is machined with a hole diameter not less than 1 / 2 the diameter of the circular wooden column (1) and a hole depth not less than 1.5 times the hole diameter.

4. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The pore-containing graphite hardwood (3) is made from hard broad-leaved wood logs such as oak, teak, and beech.

5. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The size of the thin cylindrical connecting key (7) is the same as the size of the bottom round hole of the round wooden column (1). The thin cylindrical connecting key (7) is used to insert into the bottom round hole of the round wooden column (1) to achieve positioning and docking.

6. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The hole-embedded graphite hardwood (3) is connected to the bottom of the round wooden column (1) by first applying structural adhesive to the upper surface of the hole-embedded graphite hardwood and the surface of the thin cylindrical connecting key, and then inserting the hole-embedded graphite hardwood thin cylindrical connecting key into the round hole at the bottom of the round wooden column to achieve the connection between the two.

7. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The concave spherical column base stone (9) is made of granite with a cylindrical groove on the upper part, and the groove is processed downward into a concave spherical column base stone, a drum-shaped column base stone, or a square column base stone.

8. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The graphite layer (8) is laid on the concave spherical surface of the column base stone with limiting function, and plays a lubricating role.

9. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The graphite storage hole (6) is used to store graphite. When an earthquake occurs, the seismic isolation system is activated, and the graphite in the vertical graphite storage hole (6) flows out to replenish the graphite layer (8) on the concave spherical surface (11) of the column base stone, thereby enhancing the seismic isolation effect. When the amount of graphite in the vertical graphite storage hole (6) is insufficient, it is supplemented through the oblique graphite storage hole (6). During construction, graphite is first laid between the convex spherical section (4) and the concave spherical section (11). After all the graphite is in place, graphite is injected through the side holes of the coarse cylindrical section of the hardwood with hole-filled graphite to form a hole-filled graphite structure. After the graphite is injected, the side holes of the coarse cylindrical section are sealed with small round wood.

10. The circular wooden column-holed graphite hardwood-graphite layer-seismic isolation system along the column base stone according to claim 1, characterized in that: The annular tempered glass sealing plate (12) is surrounded by a square sponge strip. The sponge strip is recessed from the outer edge to create a space for sealing with glass glue. The square sponge strip prevents the annular tempered glass from colliding with the column base stone limit edge during the sliding process of the wooden column bottom. During construction, the annular tempered glass sealing plate is first inserted from the bottom of the column. Four symmetrically arranged self-tapping screw wooden blocks are used to connect the annular tempered glass sealing plate to the wooden column below it to support the glass sealing plate. After the seismic isolation system is installed, the self-tapping screw wooden blocks are removed and the annular tempered glass sealing plate is lowered into place. Then, the joint between the annular tempered glass sealing plate and the wooden column, as well as the position of the square sponge strip that contacts the concave spherical limiter along the column base stone, are sealed with glass glue.

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