Detachable reinforcing device for rotten wooden column base and construction method thereof

Abstract

The application discloses a detachable reinforcing device for rotten column foot of a wooden structure and a construction method thereof, and relates to the technical field of rotten column foot reinforcement of a wooden structure of an ancient building. The device comprises a base for placing a wooden column which is fixed on the top of a foundation stone. A corrosion-proof reinforcing member, a buffer member and an outer sleeve are sequentially sleeved on the outer wall of the wooden column from inside to outside. An annular structure damper is arranged between the buffer member and the outer sleeve. The outer wall of the outer sleeve is elastically connected with the base through a self-resetting assembly. The device adopts the minimum intervention principle for the original wooden column and the replaced new wooden column. The annular structure damper between the buffer member and the outer sleeve and the self-resetting assembly and the sliding vibration isolation system of the wooden column itself constitute a three-mechanism damping energy dissipation system, which can cope with the influence of periodic load or impact load on the wooden structure of the building.

Description

Technical Field

[0001] This invention belongs to the technical field of reinforcing decayed column bases of ancient wooden structures, specifically to a detachable reinforcing device for decayed column bases of wooden structures and its construction method. Background Technology

[0002] Throughout the history of Chinese civilization, Chinese architecture and culture have evolved over thousands of years, developing a relatively mature theoretical system and construction techniques. Among these, timber-framed architecture is one of the most common architectural categories in ancient my country. Its most distinctive structural feature is that the wooden columns are placed horizontally on the foundation stones. Under repeated loads, a swaying restoring force is generated between the wooden columns and the foundation stones. The connection characteristics of its joints can be simplified to semi-rigid connections, and it is widely considered to have a relatively good sliding vibration isolation system. The wooden columns and foundation stones form a semi-rigid connection. Under cyclic and instantaneous impact loads, the wooden columns rotate along the edge of the column base. The bending moment resistance and restoring moment generated between the wooden columns and the foundation stones from the beams and columns cause frictional slippage and shock absorption, preventing lateral tilting and outward displacement. However, as a natural material, the wood of ancient wooden structures is greatly affected by environmental factors such as temperature, humidity, and biological factors over a long period of time. The column base is prone to cracking, decay, and insect infestation, which reduces the load-bearing capacity of the wooden column base. Under cyclic or instantaneous impact loads, it is easy to tilt significantly or damage components when affected by impact loads, which can lead to the collapse of the entire structural system.

[0003] Therefore, reinforcement devices are often installed at the base of wooden columns to avoid these problems. However, existing reinforcement devices have the following drawbacks:

[0004] 1. The reinforcement device used has a complex structure, which is not convenient for workers to disassemble and install. It is not removable and cannot be reinforced again. At the same time, the reinforcement method used changes the sliding vibration isolation system of the column itself, which is not conducive to seismic resistance.

[0005] 2. The reinforcement devices used often require drilling holes in the column base or penetrating steel materials, which can cause stress concentration in the wooden column base or irreversible damage to the wooden column due to steel oxidation. Summary of the Invention

[0006] To address the aforementioned problems, the present invention aims to provide a detachable reinforcement device for rotten wooden column bases and its construction method. It adopts the principle of minimal intervention for the original wooden column and the replacement new wooden column, and utilizes a three-mechanism vibration reduction and energy dissipation system composed of a ring structure damper between the buffer and the outer casing, a self-resetting component, and the sliding vibration isolation system of the wooden column itself. This system can cope with the impact of periodic loads or impact loads on the wooden structure of the building.

[0007] The technical solution adopted in this invention is as follows: a detachable reinforcement device for the base of a decayed wooden structure, comprising a base fixed on the top of the foundation stone for placing the wooden column, wherein an anti-corrosion reinforcement component, a buffer component, and an outer sleeve are sequentially fitted on the outer wall of the wooden column above the base from the inside to the outside, wherein an annular structure damper is provided between the buffer component and the outer sleeve, and the outer wall of the outer sleeve is elastically connected to the base through a self-resetting component.

[0008] Preferably, the anti-corrosion reinforcement includes a composite fiber material and an epoxy resin. The epoxy resin is applied to the outer wall of the wooden column, and the composite fiber material is wrapped around the epoxy resin-coated outer wall of the wooden column from bottom to top.

[0009] Preferably, the buffer comprises two semi-annular steel sleeves that are connected opposite each other to form a tubular member.

[0010] Preferably, the annular structure damper includes a spring and rubber. The spring is arranged circumferentially along the semi-annular steel sleeve. One end of the spring is welded to the outer wall of the semi-annular steel sleeve, and the other end abuts against the inner wall of the outer sleeve. Rubber is provided between the outer wall of the semi-annular steel sleeve and the inner wall of the outer sleeve.

[0011] Preferably, the outer kit includes two semi-circular steel clamps that are connected to each other to form a tubular component. A clamp extension arm is provided above the outer wall of the two semi-circular steel clamps. A single-limb reaction arm is provided on the top surface of the base. The clamp extension arm and the single-limb reaction arm are elastically connected by a self-resetting component.

[0012] Preferably, the self-resetting assembly includes a fluid viscous damper, a triangular steel frame, and a damper chamber. The fluid viscous damper is located between the clamp extension arm and the single-limb reaction arm. The bottom of the fluid viscous damper is connected to the single-limb reaction arm via a triangular steel frame collar. The damper chamber of the fluid viscous damper is connected to the clamp extension arm via a triangular steel frame collar.

[0013] A construction method for using the detachable reinforcement device for rotten wooden column bases according to any one of claims 1-6 includes the following steps:

[0014] Step 1: Use jacks to stabilize and slightly lift the original log pillar in this plan, cut off the rotten part of the pillar base at the end of the original log pillar, and use the traditional pier-jointing method to tightly splice and connect a new log pillar to the end of the original log pillar, so that it is assembled into a complete log pillar.

[0015] Step 2: Apply a layer of epoxy resin to the outer surface of the wooden post, and then wrap the composite fiber material around the new wooden post from bottom to top. Next, apply another layer of epoxy resin between the layers of composite fiber material. The composite fiber material and epoxy resin form the anti-corrosion reinforcement. Apply and attach the three layers of anti-corrosion reinforcement according to the above steps.

[0016] Step 3: Clean the base stone to make it flat. Use expansion bolts to pass through the pre-drilled bolt holes of the base to fix the base on the top surface of the base stone. The top surface of the round steel plate base has an inscribed circular groove with the same size as the wooden column after the anti-corrosion reinforcement is applied. After the anti-corrosion reinforcement has hardened, the wooden column reinforced with the anti-corrosion reinforcement is stably embedded in the inscribed circular groove of the round steel plate base.

[0017] Step 4: Prefabricate two semi-circular steel sleeves. Arrange the semi-circular steel sleeves tightly along the wooden column and anti-corrosion reinforcement. Then, spot weld the two semi-circular steel sleeves together to form an integral steel sleeve.

[0018] Step 5: Weld a spring steel spring around the outer circumference of the complete steel sleeve composed of two semi-ring steel sleeves. The semi-ring steel clamp is set along the outer side of the spring. The two semi-ring steel clamps are tightly connected by bolts passing through the reserved bolt holes. The outer side of the two semi-ring steel sleeves and the inner side of the two semi-ring steel clamps are densely filled with elastic rubber. The filled rubber is tightly connected with the spring. The spring and the rubber form a ring structure damper.

[0019] Step 6: Weld a single-limb reaction arm to the circular steel plate base and a clamp extension arm to the semi-circular steel clamp. The single-limb reaction arm and the clamp extension arm are connected to the fluid viscosity damper through upper and lower triangular steel frames. The fluid viscosity damper is under tension, which drives the structural valve to control the movement of the hydraulic cylinder piston in the damper compartment to form a damping force. The triangular steel frame, the fluid viscosity damper, and the damper compartment constitute a self-resetting assembly.

[0020] Preferably, the anti-corrosion reinforcement is wrapped around the bottom of the new wooden post to a height of 18cm-22cm above the new wooden post.

[0021] Preferably, the thickness of the anti-corrosion reinforcement is 18mm to 20mm.

[0022] Preferably, the semi-circular steel sleeve is at the same height as the anti-corrosion reinforcement, the circumferential arrangement height of the spring is consistent with the height of the semi-circular steel sleeve, and the semi-circular steel clamp is consistent with the height of the semi-circular steel sleeve.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] This detachable wooden structure rotten column base reinforcement device and its construction method, through the cooperation of anti-corrosion reinforcement components, buffer components, outer kits, bases and self-resetting components, achieves anti-corrosion, shock absorption and reinforcement of detachable wooden structure rotten column bases. The device has a simple structure, is easy for workers to install quickly, is easy to process, has low cost, can be reinforced repeatedly, and has a long service life. In addition, the device adopts the principle of minimal intervention for the original wooden column and the replacement wooden column. The ring structure damper between the buffer component and the outer kit and the self-resetting component, together with the sliding vibration isolation system of the wooden column itself, form a three-mechanism shock absorption and energy dissipation system, which can cope with the impact of periodic loads or impact loads on the wooden structure of the building. At the same time, no reinforcement measures such as opening holes or penetrating steel materials are used for the wooden column base to avoid stress concentration or steel oxidation causing the wooden column to erode.

[0025] By bonding composite fiber materials and applying epoxy resin to the surface of the wooden column to form anti-corrosion reinforcements, the corrosion of the wooden column base is prevented from causing the wood performance to degrade, thereby extending the service life of the wooden column, enhancing the anti-slip ability of the wooden column base edge and the overall load-bearing capacity, and the wooden column still has a good slip isolation system under repeated loads, and the wooden column component has good integrity and stability.

[0026] By adding a ring-shaped damper made primarily of rubber and springs without altering the original sliding vibration isolation system of the wooden column, the rubber and springs in the circumferential direction of the wooden column undergo compression deformation under repeated cyclic loads. When the wooden column itself does not suffer significant damage or failure, the restoring force of the rubber and springs causes the wooden column to generate a reaction force, preventing it from tilting or tilting outward. Subsequently, the rubber elastically recovers its deformation. The design of this part of the vibration damping and energy dissipation system allows the column base to slide within the elastic range, giving full play to the sliding vibration isolation efficiency of the wooden column itself, reducing the internal forces on the column base, and enhancing the restoring force and lateral resistance of the wooden column.

[0027] A single-limb reaction arm and a clamp extension arm are welded to the circular steel plate base and the semi-circular steel clamp respectively. The single-limb reaction arm and the clamp extension arm are connected in a ring to form a self-resetting assembly, forming another device in the vibration reduction and energy dissipation system. Under the influence of excessive impact load, the single-limb reaction arm and the clamp extension arm drive the fluid viscous damper in the self-resetting assembly. The fluid viscous damper controls the movement of the hydraulic cylinder piston in the damper compartment through a special structure valve. The valve of the fluid viscous damper is activated when the load changes instantaneously, at which time a reverse damping force of the same magnitude as the vibration force of the column base is generated. The connection between the wooden column and the foundation stone is changed from a flexible connection to a rigid connection on one side, and a support system is formed on the other side. The self-resetting assembly can prevent the wooden column from slipping excessively and can realize the self-resetting function, thereby restraining the large vibration of the column base, reducing the amplitude, and thus protecting the column base, preventing the structure from tilting outward, and improving the overall structural safety. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional structural schematic diagram provided for an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection structure between the wooden pillar and the foundation stone provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the three-dimensional structure of the composite fiber material provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the base provided in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of two semi-ring steel sleeves provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the three-dimensional structure of two semi-circular steel clamps provided in an embodiment of the present invention;

[0035] Figure 7 This is a three-dimensional structural diagram of the four self-resetting components provided in an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the inner plane arrangement provided in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the outer plane arrangement provided in an embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the working principle of the fluid viscosity damper provided in an embodiment of the present invention.

[0039] Figure descriptions: 1. Wooden column; 101. Original log column; 102. New wooden column; 2. Foundation stone; 3. Anti-corrosion reinforcement; 301. Composite fiber material; 302. Epoxy resin; 4. Semi-ring steel sleeve; 5. Annular structure damper; 501. Spring; 502. Rubber; 6. Semi-ring steel clamp; 601. Bolt; 602. Clamp extension arm; 7. Base; 701. Expansion bolt; 702. Single-limb reaction arm; 8. Self-resetting assembly; 801. Fluid viscosity damper; 802. Triangular steel frame; 803. Damper silo. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] The following is combined with Figures 1-10 The present invention will be described in detail below.

[0044] Example

[0045] Depend on Figure 1-10 A detachable reinforcement device for the base of a decaying wooden column is known, comprising a base 7 fixed on top of the foundation stone 2 for placing the wooden column 1. The base 7 is 2mm thick and can be made of a circular steel plate. On the outer wall of the wooden column 1 above the base 7, an anti-corrosion reinforcement 3, a buffer, and an outer sleeve are sequentially fitted from the inside to the outside. An annular damper 5 is provided between the buffer and the outer sleeve. The outer wall of the outer sleeve is elastically connected to the base 7 through a self-resetting component 8. The anti-corrosion reinforcement 3 can prevent the base of the wooden column 1 from being corroded and thus degraded, thereby extending the service life of the wooden column 1.

[0046] In the specific implementation process, it is worth noting that the anti-corrosion reinforcement 3 can prevent the column base from being corroded and thus degraded in performance, and extend the service life of the wooden column 1.

[0047] Furthermore, the anti-corrosion reinforcement 3 includes composite fiber material 301 and epoxy resin 302. Epoxy resin 302 is applied to the outer wall of the wooden column 1, and composite fiber material 301 is wrapped around the outer wall of the wooden column 1 coated with epoxy resin 302 from bottom to top. Each layer of composite fiber material 301 forms a radial constraint on the wooden column 1. Then, another layer of epoxy resin 302 is injected, for a total of 3 layers. The anti-corrosion reinforcement 3 prevents the wooden column 1 from being eroded by the environment, which leads to the degradation of wood performance and the reduction of the load-bearing capacity of the column base edge. In turn, it avoids the problem that the wooden column 1 is prone to structural tilting and collapse when the deformation angle of the wooden frame exceeds the width-to-height ratio of the column due to the limited shock absorption and energy dissipation capacity and automatic reset capacity of the wooden column 1.

[0048] In the specific implementation process, it is worth noting that each layer of composite fiber material 301 is closed and wrapped to form radial constraint on the wooden column 1. Then, an epoxy resin 302 layer is injected and coated, for a total of 3 layers. The anti-corrosion reinforcement 3 prevents the wooden column 1 from being eroded by the environment, which leads to the degradation of wood performance and the reduction of the load-bearing capacity of the column base edge. In turn, it avoids the problem that the wooden column 1 is limited in shock absorption and energy dissipation capacity and automatic reset capacity. When the deformation angle of the wooden frame exceeds the width-to-height ratio of the column, it is very easy to cause structural tilting and collapse.

[0049] Furthermore, the buffer includes two semi-annular steel sleeves 4 that are connected opposite each other to form a tubular member;

[0050] In the specific implementation process, it is worth noting that the two semi-circular steel sleeves 4 are assembled into a complete steel sleeve, i.e., a buffer, by being tightly compacted and spot-welded together. The thickness of the semi-circular steel sleeve 4 is 5mm, and the radius of the semi-circular steel sleeve 4 is determined according to the cross-sectional radius of the wooden column 1 and the thickness of the anti-corrosion reinforcement layer 3.

[0051] Furthermore, the annular structure damper 5 includes a spring 501 and a rubber 502. The annular structure damper 5 uses a high-strength steel wire spring 501 with a diameter of 2mm and a circumferential radius of 20mm, and a rubber 502 with good elasticity. The spring 501 is arranged around the semi-annular steel sleeve 4. One end of the spring 501 is welded to the outer wall of the semi-annular steel sleeve 4, and the other end abuts against the inner wall of the outer sleeve. The rubber 502 is provided between the outer wall of the semi-annular steel sleeve 4 and the inner wall of the outer sleeve. By adding the annular structure damper 5 composed of spring 501 and rubber 502, when repeated periodic loads occur, the spring 501 arranged around the wooden column 1 undergoes elastic deformation and the rubber 502 undergoes compression deformation, so that the column foot of the wooden column 1 slides within the allowable elastic range without damaging or destroying the wooden column 1, reducing the internal force on the column foot, thereby avoiding unilateral compression damage to the column foot and improving the reset capability.

[0052] In the specific implementation process, it is worth noting that the annular structure damper 5 uses a high-strength steel wire spring 501 with a diameter of 2mm and a circumferential radius of 20mm, as well as a rubber 502 with good elasticity. The circumferential arrangement height of the spring 501 is the same as that of the semi-annular steel sleeve 4.

[0053] Furthermore, the outer kit includes two semi-circular steel clamps 6 that are connected to each other to form a tubular component. The outer walls of the two semi-circular steel clamps 6 are provided with clamp extension arms 602, and the top surface of the base 7 is provided with a single-limb reaction arm 702. The clamp extension arms 602 and the single-limb reaction arm 702 are elastically connected by a self-resetting component 8.

[0054] In the specific implementation process, it is worth noting that the clamp extension arm 602 and the single-limb reaction arm 702 are both for subsequent connection of the self-resetting component 8. The four sets of single-limb reaction arms 702 and steel clamp extension arms 602 are arranged circumferentially at the designated positions.

[0055] Furthermore, the self-resetting assembly 8 includes a fluid viscous damper 801, a triangular steel frame 802, and a damper compartment 803. The fluid viscous damper 801 is located between the clamp extension arm 602 and the single-limb reaction arm 702. The bottom of the fluid viscous damper 801 is connected to the single-limb reaction arm 702 through a collar of the triangular steel frame 802. The damper compartment 803 of the fluid viscous damper 801 is connected to the clamp extension arm 602 through a collar of the triangular steel frame 802. By adding the fluid viscous damper 801 of the self-resetting assembly 8, which is connected between the semi-ring steel clamp 6 and the base 7 by the triangular steel frame 802, excessive slippage of the wooden column 1 is prevented. The elastic deformation of the self-resetting assembly 8 can enhance the structure's vibration damping and energy dissipation, prevent the structure from tilting and tilting outward, thereby improving the overall safety of the structure.

[0056] In the specific implementation process, it is worth noting that the fluid viscosity damper 801 is a plate-type fluid viscosity damper 801 that can be purchased on the trading market. The specific model is not specifically limited here, as long as it meets the actual use requirements.

[0057] A construction method for a detachable reinforcement device for rotten wooden column bases, employing any one of claims 1-6, includes the following steps:

[0058] Step 1: Use a jack to stabilize and slightly lift the original wooden column 101 in this plan, cut off the rotten part of the column foot at the end of the original wooden column 101, and use the traditional pier-jointing method to tightly splice and connect a new wooden column 102 to the end of the original wooden column 101, so that it is assembled into a complete wooden column 1.

[0059] Step 2: Apply a layer of epoxy resin 302 to the outer surface of the wooden column 1, and then wrap the composite fiber material 301 around the new wooden column 102 from bottom to top. Next, apply another layer of epoxy resin 302 between the layers of composite fiber material 301. The composite fiber material 301 and epoxy resin 302 form the anti-corrosion reinforcement 3. Follow the above steps to stick and apply three layers of anti-corrosion reinforcement 3.

[0060] Step 3: Clean the base stone 2 to make it flat. Use expansion bolts 701 to pass through the pre-drilled bolt holes of the base 7 to fix the base 7 on the top surface of the base stone 2. The top surface of the round steel plate base 7 has an incised circular groove of the same size as the wooden column 1 after the anti-corrosion reinforcement 3 is applied. After the anti-corrosion reinforcement 3 has hardened, the wooden column 1 reinforced by the anti-corrosion reinforcement 3 is stably embedded in the incised circular groove of the round steel plate base 7.

[0061] Step 4: Prefabricate two semi-circular steel sleeves 4. The semi-circular steel sleeves 4 are arranged closely along the wooden column 1 and the anti-corrosion reinforcement 3. Then, the two semi-circular steel sleeves 4 are spot welded together using a welding machine to form an integral steel sleeve.

[0062] Step 5: Weld a spring steel spring 501 around the outer circumference of the complete steel sleeve 4 composed of two semi-ring steel sleeves 4. The semi-ring steel clamp 6 is set to abut against the outside of the spring 501. The two semi-ring steel clamps 6 are tightly connected by bolts 601 passing through the reserved bolt holes. The outer side of the two semi-ring steel sleeves 4 and the inner side of the two semi-ring steel clamps 6 are densely filled with elastic rubber 502. The filled rubber 502 is tightly connected with the spring 501. The spring 501 and the rubber 502 form a ring structure damper 5.

[0063] Step 6: Weld a single-limb reaction arm 702 onto the circular steel plate base 7 and a clamp extension arm 602 onto the semi-circular steel clamp 6. The single-limb reaction arm 702 and the clamp extension arm 602 are respectively connected to the fluid viscosity damper 801 through the upper and lower triangular steel frames 802. The fluid viscosity damper 801 is under tension, which drives the structural valve to control the movement of the hydraulic cylinder piston in the damper compartment 803 to form a damping force. The triangular steel frame 802, the fluid viscosity damper 801 and the damper compartment 803 form a self-resetting assembly 8.

[0064] In the specific implementation process, it is worth noting that the self-resetting component 8, semi-ring steel sleeve 4, semi-ring steel clamp 6 and annular structural damper 5 involved in this scheme can all be quickly replaced after the wooden column 1 is damaged again or the device is damaged, which facilitates the secondary reinforcement of the wooden column 1. Based on the material characteristics of the original wooden column 101, the same or similar raw materials are selected to manufacture a new wooden column 102 with the same cross-sectional dimensions. The thickness of the semi-ring steel sleeve 4 is 5mm, and the radius of the semi-ring steel sleeve 4 is determined according to the cross-sectional radius of the wooden column 1 and the thickness of the anti-corrosion reinforcement 3. Without changing the sliding vibration isolation system of the wooden column 1 itself, the annular structural damper 5 and the self-resetting component 8 are added to allow the column base to slide within the elastic range. Under the influence of periodic load and impact load, the added annular structural damper 5 and the reset component 8 form a three-mechanism vibration reduction and energy dissipation system with the original system. This system enables the annular structural damper 5 and the reset component 8 to play their respective roles in reducing the internal force and bending moment on the column base and enhancing the recovery force of the wooden column 1.

[0065] Furthermore, the anti-corrosion reinforcement 3 is wrapped around the bottom of the new wooden post 102 up to a height of 18cm-22cm above the new wooden post 102;

[0066] In the specific implementation process, it is worth noting that the anti-corrosion reinforcement 3 plays a role in protecting the base of the wooden column 1, preventing the base of the wooden column 1 from being corroded and causing performance degradation, and extending the service life of the wooden column 1.

[0067] Furthermore, the thickness of the anti-corrosion reinforcement is 18mm-20mm;

[0068] In the specific implementation process, it is worth noting that the anti-corrosion reinforcement is 18mm-20mm thick and is used to protect the base of the wooden column 1 to prevent the base of the wooden column 1 from being corroded and thus degraded in performance.

[0069] Furthermore, the semi-circular steel sleeve 4 is at the same height as the anti-corrosion reinforcement 3, the circumferential arrangement height of the spring 501 is consistent with the height of the semi-circular steel sleeve 4, and the semi-circular steel clamp 6 is consistent with the height of the semi-circular steel sleeve 4.

[0070] In the specific implementation process, it is worth noting that the semi-circular steel sleeve 4 and the semi-circular steel clamp 6 can be prefabricated according to the actual situation such as the size of the wooden column 1 and the thickness of the anti-corrosion reinforcement 3.

[0071] Specifically, when using the detachable timber structure rotten column base reinforcement device and its construction method, firstly, the original timber column 101 in this scheme is stabilized and slightly lifted using a jack. The rotten part of the original timber column 101 column base is cleaned and cut off, and a new timber column 102 is added for repair. The original timber column 101 and the new timber column 102 are tightly spliced ​​together using the traditional pier joint method, so that the original timber column 101 and the new timber column 102 form a complete timber column 1. Next, a layer of epoxy resin 302 is applied to the outer surface of the original timber column 101 and the new timber column 102. Then, composite fiber material 301 is wrapped around the repaired and replaced new timber column 102 from bottom to top in a closed loop. Finally, another layer of epoxy resin 301 is applied between the layers of composite fiber material 301. 02. The anti-corrosion reinforcement 3 is composed of composite fiber material 301 and epoxy resin 302. Apply three layers of anti-corrosion reinforcement 3 according to the above steps. Clean and flatten the base stone 2. Use expansion bolts 701 to pass through the pre-drilled bolt holes in the base 7 to firmly connect the base 7 to the base stone 2. A circumferential groove of the same size as the wooden column 1 after applying the anti-corrosion reinforcement 3 is pre-drilled on the top surface of the circular steel plate base 7. After the anti-corrosion reinforcement 3 hardens, the wooden column 1 reinforced with the anti-corrosion reinforcement 3 is stably embedded in the circumferential groove of the circular steel plate base 7. Then, prefabricate two semi-circular steel sleeves 4 and two semi-circular steel clamps 6 according to the actual situation. Arrange the semi-circular steel sleeves 4 tightly along the wooden column 1 and the anti-corrosion reinforcement 3, and then attach the two semi-circular steel sleeves 4... A single steel sleeve is formed by spot welding two semi-circular steel sleeves 4 together. A spring 501 is welded to the outer circumference of the complete steel sleeve 4. A semi-circular steel clamp 6 is abutted against the outer side of the spring 501. The two semi-circular steel clamps 6 are tightly connected by bolts 601 passing through pre-drilled bolt holes. Elastic rubber 502 is densely filled between the outer sides of the two semi-circular steel sleeves 4 and the inner sides of the two semi-circular steel clamps 6. The filled rubber 502 is tightly connected to the spring 501. The spring 501 and rubber 502 form a ring-shaped damper 5. A single-limb reaction arm 702 is welded to the circular steel plate base 7, and a clamp extension arm 602 is welded to the semi-circular steel clamp 6. The single-limb reaction arm 702 and the clamp extension arm 602 are respectively connected by upper and lower triangular steel... The frame 802 is connected to the fluid viscous damper 801. The fluid viscous damper 801 is under tension, which drives the structural valve to control the movement of the hydraulic cylinder piston within the damper hopper 803, generating damping force. The triangular steel frame 802, the fluid viscous damper 801, and the damper hopper 803 together form the self-resetting assembly 8. The anti-corrosion reinforcement 3 protects the base of the wooden column 1, preventing corrosion and performance degradation, and extending the service life of the wooden column 1. The annular structural damper 5 and the self-resetting assembly 8, together with the sliding vibration isolation system of the wooden column itself, form a three-mechanism vibration reduction and energy dissipation system. When the wooden frame of the building is subjected to periodic load vibration or small impact load, the wooden column can first utilize its own sliding vibration isolation efficiency to offset a small portion of the bending moment and shear force.Secondly, the elastic deformation of spring 501 and the restoring force of rubber 502 in the annular structure damper 5 can be utilized to improve energy dissipation and vibration reduction, ensuring that the wooden column 1 only rotates and slides within the elastic range, thus reducing some vibration energy dissipation. Finally, when the wooden column 1 is subjected to a large impact load, the wooden column 1 causes the wooden frame to tilt and sway outward. The connection between the single-limb reaction arm 702 on the tension side of the device, the clamp extension arm 602 and the self-resetting component 8 is instantly changed from a flexible connection to a rigid connection. The structural valve in the fluid viscosity damper 801 controls the movement of the hydraulic cylinder piston in the damper hopper 803. The valve is activated when the load changes instantaneously. At this time, during the process of the valve being pulled out, the valve generates a reverse damping force of the same magnitude as the vibration force of the column foot. The reverse damping force generated by the fluid viscosity damper 801 can effectively suppress the large vibration of the column foot, reduce the amplitude, and limit the large lateral slip of the wooden column 1, thereby protecting the column foot, preventing the structure from tilting and swaying outward, improving the overall safety of the structure, and thus achieving vibration reduction and energy dissipation for the wooden column 1 and the entire wooden frame. ,

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A detachable reinforcement device for rotten wooden column bases, characterized in that: The base (7) is fixed on the top of the foundation stone (2) for placing the wooden column (1). The wooden column (1) includes the original wooden column (101) after the rotten part of the column foot has been removed and the new wooden column (102) installed on the base. The new wooden column (102) and the original wooden column (101) are joined by a pier joint method. The outer wall of the wooden column (1) above the base (7) is fitted with anti-corrosion reinforcement (3), buffer and outer sleeve from the inside to the outside. A ring structure damper (5) is provided between the buffer and the outer sleeve. The outer wall of the outer sleeve is elastically connected to the base (7) through a self-resetting component (8). The buffer includes two semi-annular steel sleeves (4) that are connected to each other to form a tubular component. The annular structure damper (5) includes a spring (501) and a rubber (502). The spring (501) is arranged circumferentially along the semi-annular steel sleeve (4). One end of the spring (501) is welded to the outer wall of the semi-annular steel sleeve (4), and the other end abuts against the inner wall of the outer sleeve. The rubber (502) is provided between the outer wall of the semi-annular steel sleeve (4) and the inner wall of the outer sleeve. The outer kit includes two semi-circular steel clamps (6) that are connected to each other to form a tubular component. The outer walls of the two semi-circular steel clamps (6) are provided with clamp extension arms (602). The top surface of the base (7) is provided with a single-limb reaction arm (702). The clamp extension arm (602) and the single-limb reaction arm (702) are elastically connected by a self-resetting component (8). The self-resetting assembly (8) includes a fluid viscosity damper (801), a triangular steel frame (802), and a damper compartment (803). The fluid viscosity damper (801) is located between the clamp extension arm (602) and the single-limb reaction arm (702). The bottom of the fluid viscosity damper (801) is connected to the single-limb reaction arm (702) through a triangular steel frame (802) collar. The damper compartment (803) of the fluid viscosity damper (801) is connected to the clamp extension arm (602) through a triangular steel frame (802) collar. Under the influence of excessive impact load, the single-limb reaction arm (702) and the clamp extension arm (602) drive the fluid viscous damper (801) in the self-resetting assembly (8). The fluid viscous damper (801) controls the movement of the hydraulic cylinder piston in the damper hopper (803) by means of the valve. The valve of the fluid viscous damper (801) is activated when the load changes instantaneously, generating a reverse damping force with the same magnitude as the vibration force of the column foot. The connection between the wooden column (1) and the foundation stone (2) is changed from a flexible connection to a rigid connection.

2. The detachable reinforcement device for rotten wooden column bases according to claim 1, characterized in that: The corrosion-resistant reinforcement (3) includes a composite fiber material (301) and an epoxy resin (302). The epoxy resin (302) is applied to the outer wall of the wooden column (1), and the composite fiber material (301) is wrapped around the outer wall of the wooden column (1) coated with epoxy resin (302) from bottom to top.

3. A construction method for using the detachable timber structure rotten column base reinforcement device as described in claim 1 or 2, comprising the following steps, characterized in that: Step 1: Use a jack to stabilize and slightly lift the original wooden column (101) in this scheme, cut off the rotten part of the column foot at the end of the original wooden column (101), and use the traditional pier-jointing method to tightly splice and connect a new wooden column (102) to the end of the original wooden column (101) so that it is assembled into a complete wooden column (1). Step 2: Apply a layer of epoxy resin (302) to the outer surface of the wooden column (1), and then wrap the composite fiber material (301) around the new wooden column (102) from bottom to top. Next, apply another layer of epoxy resin (302) between the layers of composite fiber material (301). The composite fiber material (301) and epoxy resin (302) form the anti-corrosion reinforcement (3). Apply the three layers of anti-corrosion reinforcement (3) according to the above steps. Step 3: Clean the base stone (2) to make it flat. Use expansion bolts (701) to pass through the pre-drilled bolt holes of the base (7) to fix the base (7) on the top surface of the base stone (2). The top surface of the round steel plate base (7) has an incised circular groove of the same size as the wooden column (1) after the anti-corrosion reinforcement (3) is applied. After the anti-corrosion reinforcement (3) hardens, the wooden column (1) reinforced by the anti-corrosion reinforcement (3) is stably embedded in the incised circular groove of the round steel plate base (7). Step 4: Prefabricate two semi-circular steel sleeves (4). The semi-circular steel sleeves (4) are arranged closely along the wooden column (1) and the anti-corrosion reinforcement (3). Then, the two semi-circular steel sleeves (4) are spot welded together using a welding machine to form an integral steel sleeve. Step 5: Weld springs (501) around the outer circumference of the complete steel sleeve (4) composed of two semi-ring steel sleeves (4). The semi-ring steel clamps (6) are set to abut against the outside of the springs (501). The two semi-ring steel clamps (6) are tightly connected by bolts (601) passing through the reserved bolt holes. The outer side of the two semi-ring steel sleeves (4) and the inner side of the two semi-ring steel clamps (6) are densely filled with elastic rubber (502). The filled rubber (502) is tightly connected with the springs (501). The springs (501) and the rubber (502) form a ring structure damper (5). Step 6: Weld a single-limb reaction arm (702) onto the circular steel plate base (7) and a clamp extension arm (602) onto the semi-circular steel clamp (6). The single-limb reaction arm (702) and the clamp extension arm (602) are connected to the fluid viscosity damper (801) through the upper and lower triangular steel frames (802). The fluid viscosity damper (801) is under tension, which drives the structural valve to control the movement of the hydraulic cylinder piston in the damper compartment (803) to form a damping force. The triangular steel frame (802), the fluid viscosity damper (801) and the damper compartment (803) form a self-resetting assembly (8).

4. The detachable reinforcement device for decayed wooden column bases and its construction method according to claim 3, characterized in that: The anti-corrosion reinforcement (3) is wrapped around the bottom of the new wooden post (102) to a height of 18cm-22cm above the new wooden post (102).

5. The detachable reinforcement device for rotten wooden column bases and its construction method according to claim 4, characterized in that: The thickness of the anti-corrosion reinforcement is 18mm-20mm.

6. The detachable reinforcement device for decayed wooden column bases and its construction method according to claim 5, characterized in that: The semi-circular steel sleeve (4) is at the same height as the anti-corrosion reinforcement (3), the circumferential arrangement height of the spring (501) is consistent with the height of the semi-circular steel sleeve (4), and the semi-circular steel clamp (6) is consistent with the height of the semi-circular steel sleeve (4).

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