A connection device and construction method for connecting wooden columns to concrete foundations

Abstract

This invention provides a connection device for a wooden column and a concrete foundation. A pre-embedded screw is embedded in the concrete foundation. A circular stone column base is positioned above the concrete foundation. A rubber moisture-proof and shock-absorbing pad is sandwiched between the circular stone column base and the wooden column. The wooden column has interconnected vertical pre-drilled holes and horizontal pre-drilled openings. The pre-embedded screw passes upwards through the circular stone column base, the rubber moisture-proof and shock-absorbing pad, and extends into the vertical pre-drilled hole of the wooden column. An eccentric wheel is assembled in the horizontal pre-drilled opening. An intercepting tooth spring is positioned on the outer circumference of the eccentric wheel to achieve unidirectional rotation and self-locking. The inner wall of the eccentric wheel cooperates with the pre-embedded screw. Rotating the eccentric wheel adjusts the installation height of the wooden column and achieves a tight connection. Grouting holes are opened on the wooden column or the circular stone column base to inject grout into the vertical pre-drilled holes for curing and sealing. This invention also provides a construction method for connecting a wooden column and a concrete foundation, using the connection device described above.

Description

Technical Field

[0001] This invention relates to a connection device and construction method for connecting wooden columns and concrete foundations. Background Technology

[0002] Timber structures are increasingly used in modern construction projects due to their advantages such as being green and environmentally friendly, easy to construct, and highly comfortable. The connection between the timber columns and the concrete foundation is the core load-bearing part of the overall structure, directly determining the building's load-bearing capacity, seismic performance, durability, and safety.

[0003] Currently, the industry commonly uses a traditional construction method of steel connectors combined with embedded foundation components to connect timber columns to concrete foundations. This method transfers vertical loads and horizontal forces between the column and foundation via steel connectors, while relying on a simple padding layer to achieve initial isolation between the timber and concrete. However, in practical engineering applications, this traditional connection technology has many insurmountable drawbacks:

[0004] Poor appearance and corrosion resistance: All steel components used for connection are exposed, which not only affects the overall aesthetics of the building, but also makes the steel components prone to rust after long-term exposure. Rust not only reduces the load-bearing capacity, but also contaminates the wooden components. At the same time, traditional moisture-proof measures are simple and cannot effectively prevent water vapor in the concrete foundation from penetrating upwards. The wooden columns are very susceptible to moisture and decay, which greatly shortens the service life of the structure.

[0005] Insufficient mechanical properties: Most existing connections are hinged structures, with limited bending and shear resistance at the nodes, poor overall stiffness, and weak seismic and wind resistance. Under loads such as earthquakes and strong winds, the connections are prone to loosening, displacement, or even failure, posing serious safety hazards.

[0006] Low connection reliability: Traditional connection methods cannot adjust the installation height and gap after fixing, making it difficult to correct construction errors. This can easily lead to problems such as loose connections and uneven stress, and the connection may loosen and fall off after long-term use.

[0007] Construction and cost drawbacks: Traditional connection structures are complex, on-site construction procedures are cumbersome and precision is difficult to control. A large amount of on-site welding and drilling work is required, resulting in low construction efficiency, high labor and material costs, and difficulty in ensuring consistent project quality.

[0008] In summary, existing connection technologies between wooden columns and concrete foundations cannot simultaneously meet the engineering requirements of aesthetics, corrosion resistance, earthquake resistance, adjustability, convenient construction, and reliable quality, which seriously restricts the promotion and safe application of modern wooden structures. Therefore, developing a new connection device and construction method has become an urgent technical problem to be solved in the industry. Summary of the Invention

[0009] The main technical problem this invention aims to solve is to provide a connection device and construction method for connecting wooden columns to concrete foundations, achieving convenient installation, safety and reliability, high construction efficiency, and good quality. This changes current construction techniques and improves the construction quality of wooden structure installations.

[0010] To solve the above-mentioned technical problems, the present invention provides a connection device between a wooden column and a concrete foundation, including a concrete foundation, a pre-embedded bolt, a circular stone column base, a rubber moisture-proof and shock-proof pad, a wooden column, an eccentric wheel, an intercepting toothed spring, and a grouting hole;

[0011] The pre-embedded screw is embedded in the concrete foundation, the circular stone column base is set above the concrete foundation, and the rubber moisture-proof and shock-proof pad is sandwiched between the circular stone column base and the wooden column.

[0012] The wooden column has interconnected vertical reserved holes and horizontal reserved openings. The embedded screw passes upward through the circular stone column base and the rubber moisture-proof and shock-proof pad in sequence and extends into the vertical reserved hole of the wooden column.

[0013] The eccentric wheel is assembled in the transverse reserved opening, and the intercepting tooth spring is set on the outer periphery of the eccentric wheel to realize the eccentric wheel's unidirectional rotation self-locking; the inner wall of the eccentric wheel cooperates with the pre-embedded screw, and the installation height of the wooden column is adjusted and a fast connection is achieved by rotating the eccentric wheel;

[0014] The grouting holes are opened on wooden pillars or circular stone column bases and are used to inject grout into the vertical pre-reserved holes to achieve curing and sealing.

[0015] In a preferred embodiment, the bottom of the pre-embedded screw is connected to the steel plate by the screw fixing plate to form a whole, and the concrete foundation is a reinforced concrete structure.

[0016] In a preferred embodiment, the inner wall of the eccentric wheel is provided with anti-slip saw teeth, and the thickness of the inner wall gradually changes from one end to the other to achieve stepless height adjustment; the intercepting tooth spring is an irreversible meshing structure to restrict the eccentric wheel from rotating in the opposite direction.

[0017] In a preferred embodiment, the top surface of the circular stone column base is provided with a groove that matches the outer diameter of the wooden column, and the rubber moisture-proof and shock-proof pad is embedded in the groove.

[0018] In a preferred embodiment, the wooden post is further provided with a vertical reserved opening. The width of the horizontal reserved opening and the vertical reserved opening is greater than the diameter of the embedded screw and smaller than the diameter of the matching nut.

[0019] In a preferred embodiment, the wooden pillar is a fir pillar, the eccentric wheel is made of stainless steel, the circular stone base is made of granite, and the rubber moisture-proof and shock-proof pad is an elastic rubber pad.

[0020] In a preferred embodiment, the depth of the vertical reserved hole is greater than the exposed length of the embedded screw, leaving a gap for grouting filling.

[0021] This invention also provides a construction method for connecting a wooden column to a concrete foundation, using the connection device described above, and including the following steps:

[0022] (1) Concrete foundation pouring: Multiple pre-embedded bolts are fixed as a whole by positioning steel plates, pre-embedded into the concrete foundation and poured into shape;

[0023] (2) Installation of circular stone column bases: Clean the top surface of the concrete foundation, mark the positioning line, hoist the circular stone column bases into place and correct the levelness;

[0024] (3) Installation of moisture-proof and shock-proof pads: Install rubber moisture-proof and shock-proof pads in the grooves of the circular stone column bases;

[0025] (4) Prefabrication of wooden columns: Vertical pre-drilled holes and horizontal pre-drilled openings are pre-drilled on the wooden columns.

[0026] (5) Installation of wooden posts: Align the vertical reserved holes of the wooden posts with the pre-embedded screws and insert them, and install the eccentric wheel in the horizontal reserved opening;

[0027] (6) Eccentric wheel fastening: Rotate the eccentric wheel, adjust the height of the wooden column by gradually changing the thickness of the eccentric wheel and press it down, and intercept the toothed spring to achieve one-way self-locking;

[0028] (7) Grouting and curing: Grouting material is injected into the vertical reserved hole through the grouting hole and cured under stable pressure until it is cured;

[0029] (8) Surface treatment of wooden pillars: seal the reserved openings and sand and paint the surface.

[0030] In a preferred embodiment, the diameter of the vertical reserved hole in step (4) is adapted to the pre-embedded screw, and the diameter of the horizontal reserved opening is adapted to the outer diameter of the eccentric wheel.

[0031] In a preferred embodiment, in step (8), wood putty is used to fill the opening of the eccentric wheel installation, and after sanding, primer and topcoat are applied in sequence to complete the surface protection.

[0032] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0033] This invention provides a connection device and construction method for connecting wooden columns to concrete foundations. The intercepting toothed spring and the eccentric wheel work together to achieve complete irreversibility, preventing the connection from loosening during the use of the wooden structure, and significantly improving the earthquake resistance and wind resistance performance.

[0034] This invention provides a connection device and construction method for connecting wooden columns and concrete foundations. The eccentric wheel with its gradually changing inner wall enables stepless fine adjustment, solving the problem of uncontrollable gaps in traditional connection installations and significantly improving installation accuracy.

[0035] This invention provides a connection device and construction method for connecting wooden columns to concrete foundations. The double-layer moisture barrier (stone column base + rubber pad) + grouting seal completely prevents contact between wood and concrete and moisture, extending the service life of wooden columns by more than 50%.

[0036] This invention provides a connection device and construction method for connecting wooden columns to concrete foundations. The device is prefabricated in the factory and assembled on site, eliminating the need for complex welding and drilling operations. The installation time for a single column is reduced by 60%, and the construction quality is easy to control.

[0037] This invention provides a connection device and construction method for connecting wooden columns to concrete foundations. All dimensions and specifications can be flexibly adjusted according to the size of the column and the construction conditions, and it is applicable to the connection of column foundations in various types of wooden structures. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the connection device between the wooden structure column and the concrete foundation in a preferred embodiment of the present invention;

[0039] Figure 2 This is a partial view of the connection device between the wooden structure column and the concrete foundation in a preferred embodiment of the present invention. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] refer to Figures 1-2 This embodiment provides a connection device 1 for connecting wooden columns and concrete foundations. It is mainly used for the stable connection between fir columns and C30 reinforced concrete foundations in wooden structures. It also has multiple functions such as height adjustment, unidirectional irreversible self-locking, moisture and shock resistance, grouting sealing, and seismic stability. The whole includes a concrete foundation 5, embedded bolts 6, bolt fixing steel plates 15, circular stone column bases 12, rubber moisture-proof and shock-proof pads 13, wooden columns 2, eccentric wheels 3, intercepting toothed springs 11, nuts 7, and matching vertical reserved holes 4, horizontal reserved openings 8, vertical reserved openings 9, and grouting holes 14.

[0045] The dimensions, materials, structures, and installation relationships of each component are specifically defined as follows:

[0046] The concrete foundation 5 is cast using C30 commercial reinforced concrete, providing bottom load-bearing support for the entire connection device. Six 16mm diameter threaded rods 6 are pre-embedded inside the foundation. The bottom of all threaded rods 6 is welded / bolted together with the threaded rod fixing steel plate 15 to ensure accurate pre-embedding positioning without deviation. The exposed length of the threaded rod 6 after pre-embedding is 80cm (which can be flexibly adjusted according to the actual construction conditions), ensuring that the threaded rod can be fully inserted into the reserved hole of the wooden column and leaving an adjustment gap.

[0047] The circular stone column base 12 is made of granite, which has high strength, corrosion resistance and moisture-proof properties. A 2cm deep circular groove is opened on the top surface of the stone column base. The diameter of the groove is exactly the same as the outer diameter of the wooden column 2, so as to achieve precise positioning of the wooden column. The stone column base has a pre-drilled hole, and the position of the hole corresponds one-to-one with the pre-embedded bolt 6 in the concrete foundation, so as to ensure that the bolt can pass smoothly through the stone column base.

[0048] The rubber moisture-proof and shock-proof pad 13 is made of highly elastic rubber material with a thickness of 1cm and a diameter that is the same as the groove diameter of the circular stone column base 12, so that it can be completely embedded in the groove. On the one hand, this pad prevents moisture from the concrete foundation and the stone column base from penetrating upward, thus preventing the wooden column from getting damp and rotting. On the other hand, it uses the elasticity of rubber to absorb vibration, improve the seismic performance of the joint, and fill the installation gap, making the connection tighter.

[0049] Wooden column 2 is made of 400mm fir wood and serves as the main load-bearing component of the wooden structure. Six vertical reserved holes 4 are prefabricated at the ends of the columns, with each hole corresponding to a pre-embedded screw 6. The inner diameter of the vertical reserved hole 4 is 25mm (suitable for 16mm screws, which can be adjusted according to the screw specifications), and the hole depth is 81cm (meeting the requirement of 80cm + 1cm grouting gap for the screw exposed).

[0050] At the position of the vertical reserved hole 4 with a depth of 80cm, a horizontal reserved opening 8 is machined to pass through the vertical hole. The opening diameter is consistent with the outer diameter of the eccentric wheel 3. At the same time, a vertical reserved opening 9 is opened on the column. The width of both the horizontal reserved opening 8 and the vertical reserved opening 9 is 18mm. This dimension strictly meets the requirement of being greater than the diameter of the screw 6 (16mm) and less than the diameter of the nut 7, which ensures that the screw can be smoothly inserted and that the nut can be used to limit and prevent it from getting off.

[0051] The column is also equipped with grouting holes 14 for injecting grout into the vertical reserved holes 4. The grouting holes are connected to the vertical reserved holes to ensure that the grout can fill all the internal gaps.

[0052] The eccentric wheel 3 is made of stainless steel with a diameter of 3~5cm (which can be flexibly adjusted according to the specifications of the wooden post). It has rust-proof and high-strength characteristics. The inner wall thickness of the eccentric wheel 3 is gradually set from one end to the other. By rotating, the matching distance between the wall thickness and the screw is changed, so as to achieve stepless fine adjustment of the installation height of the wooden post. The inner wall is also processed with anti-slip serrations to increase the friction with the screw and prevent the connection from loosening.

[0053] The outer ring of the eccentric wheel 3 is fitted with a steel plate intercepting tooth spring 11, forming a one-way irreversible self-locking structure: the height can be easily adjusted when the eccentric wheel rotates in the forward direction, and once it rotates in the reverse direction, the intercepting tooth spring immediately engages with the inner wall of the transverse reserved opening and locks, preventing the eccentric wheel from reversing, slipping, or loosening, and can maintain a tight state for a long time without the need for an additional braking device.

[0054] The auxiliary components are equipped with 16mm nuts 7, which are compatible with the pre-embedded screws 6, for auxiliary positioning; cross screws 10 can also be installed on the wooden column for installation positioning and verticality calibration, improving construction accuracy.

[0055] When all components of this device are assembled, it achieves integrated functions such as pre-embedded positioning, height adjustment, one-way self-locking, moisture and shock protection, and grouting and curing. There are no exposed steel components, resulting in an aesthetically pleasing and highly durable overall design.

[0056] This embodiment also provides a construction method for connecting wooden columns to concrete foundations, using the aforementioned connection device. The specific steps and operational details are as follows:

[0057] Step 1: Concrete foundation pouring

[0058] Six 16mm pre-embedded screws 6 are connected as a whole by using screw fixing steel plate 15. After precise positioning, they are pre-embedded, and the exposed length of the screw is controlled to be 80cm. Then, C30 commercial concrete is poured to the design structural elevation, vibrated to compact, and cured to the design strength to ensure that the screws are firmly embedded, accurately positioned, and without tilting, providing a benchmark for subsequent installation.

[0059] Step 2: Installation of circular stone column bases

[0060] After the concrete foundation is cured, clean the top surface of the foundation of floating slag and dust, and mark the axis and elevation control lines; hoist the 12 round stone column bases made of granite into place, strictly align them with the center axis, use a level to correct the levelness, strictly control the center deviation and elevation deviation, ensure that the stone column bases are stable and the stress is uniform, and at the same time achieve preliminary moisture isolation.

[0061] Step 3: Install the rubber moisture-proof and shock-proof pads

[0062] A 1cm thick rubber moisture-proof and shock-proof pad 13 is embedded in a 2cm deep groove on the top surface of the circular stone column base 12. The pad fits tightly with the groove without warping or gaps. The pad can completely separate the wooden column and the stone column base, blocking the upward movement of moisture from the foundation, while providing an elastic damping layer to improve the joint's earthquake resistance and moisture-proof performance.

[0063] Step 4: Prefabrication of wooden posts

[0064] Complete the prefabrication of the wooden posts 2 at the factory / construction site:

[0065] Six vertical pre-drilled holes with an inner diameter of 25mm were drilled, and the hole depth was strictly controlled to be 81cm.

[0066] A transverse pre-reserved opening 8, which is connected to the vertical hole, is drilled at a hole depth of 80cm, and the hole diameter is adapted to the eccentric wheel 3;

[0067] The vertical pre-reserved opening is 9mm, with a uniform width of 18mm;

[0068] 14 grouting holes are reserved to ensure that they are connected with the vertical reserved holes;

[0069] All openings are precisely sized and positioned to avoid errors in on-site drilling affecting installation quality.

[0070] Step 5: Pre-installation of the irreversible eccentric wheel

[0071] A steel plate intercepting tooth spring 11 is fixedly installed on the outer ring of the eccentric wheel 3. The elasticity and meshing effect of the spring are checked. The anti-slip saw teeth on the inner wall of the eccentric wheel are kept intact to ensure smooth forward rotation and immediate self-locking in reverse. The pre-installation of the eccentric wheel assembly is completed.

[0072] Step 6: Install the wooden posts and tighten the eccentric wheels

[0073] Align the vertical pre-drilled hole 4 of the wooden column 2 with the pre-embedded screw 6 in the concrete foundation, and slowly insert it so that the screw extends into the pre-drilled hole to the designed depth;

[0074] Insert the pre-installed eccentric wheel 3 into the transverse reserved opening 8, rotate the eccentric wheel in the forward direction, and adjust the height of the wooden column by using the gradual thickness of the inner wall, gradually reducing the gap between the wooden column and the column base until it is completely pressed together.

[0075] Following the above method, the remaining 5 sets of eccentric wheels were rotated and tightened in sequence to ensure that the 6 sets of screws were subjected to uniform force and that the verticality of the wooden column met the standard.

[0076] During rotation, the intercepting tooth spring automatically achieves one-way self-locking, the eccentric wheel does not reverse or slip, and the connection is firm and reliable.

[0077] Step 7: Grouting and curing of pre-drilled holes

[0078] After the wooden pillars are firmly fixed, special grouting material is continuously and evenly injected into the vertical pre-reserved holes 4 through the grouting holes 14;

[0079] After the grout overflows from the orifice and the interior is confirmed to be fully filled, maintain a stable pressure for a period of time, and then perform secondary grouting to completely eliminate internal voids.

[0080] Immediately after grouting is completed, seal the grouting hole 14 to prevent grout loss. Allow it to stand and cure until the grout is completely solidified, so that the screw, wooden column and grout form a dense whole, which greatly improves the connection rigidity and seismic performance.

[0081] Step 8: Surface treatment of wooden posts

[0082] Wood putty was used to fill and compact the eccentric wheel installation opening, grouting hole, and defects on the column surface;

[0083] After the putty has dried completely, sand it smooth and remove any dust.

[0084] Apply the primer evenly, and after the primer dries, sand it again carefully.

[0085] Finally, apply the topcoat, ensuring a uniform coating without drips or missed spots.

[0086] After the paint has fully cured, all construction is complete, resulting in a clean-looking column while improving the wood's resistance to decay and insects, as well as its durability.

[0087] The above is only one specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be deemed as infringing the protection scope of the present invention.

Claims

1. A connection device between a wooden column and a concrete foundation, characterized in that, Includes concrete foundation, embedded bolts, circular stone column base, rubber moisture-proof and shock-absorbing pads, wooden columns, eccentric wheels, intercepting toothed springs and grouting holes; The pre-embedded screw is embedded in the concrete foundation, the circular stone column base is set above the concrete foundation, and the rubber moisture-proof and shock-proof pad is sandwiched between the circular stone column base and the wooden column. The wooden column has interconnected vertical reserved holes and horizontal reserved openings. The embedded screw passes upward through the circular stone column base and the rubber moisture-proof and shock-proof pad in sequence and extends into the vertical reserved hole of the wooden column. The eccentric wheel is assembled in the transverse reserved opening, and the intercepting tooth spring is set on the outer periphery of the eccentric wheel to realize the eccentric wheel's unidirectional rotation self-locking; the inner wall of the eccentric wheel cooperates with the pre-embedded screw, and the installation height of the wooden column is adjusted and a fast connection is achieved by rotating the eccentric wheel; The grouting holes are opened on wooden pillars or circular stone column bases and are used to inject grout into the vertical pre-reserved holes to achieve curing and sealing.

2. The connection device between a wooden structure column and a concrete foundation according to claim 1, characterized in that, The bottom of the pre-embedded screw is connected to the steel plate by the screw fixing to form a whole, and the concrete foundation is a reinforced concrete structure.

3. The connection device between a wooden structure column and a concrete foundation according to claim 1, characterized in that, The inner wall of the eccentric wheel is provided with anti-slip saw teeth, and the thickness of the inner wall gradually changes from one end to the other to achieve stepless height adjustment; the intercepting tooth spring has an irreversible meshing structure to restrict the eccentric wheel from rotating in the opposite direction.

4. The connection device between a wooden structure column and a concrete foundation according to claim 1, characterized in that, The top surface of the circular stone column base has a groove that matches the outer diameter of the wooden column, and the rubber moisture-proof and shock-proof pad is embedded in the groove.

5. The connection device between a wooden structure column and a concrete foundation according to claim 1, characterized in that, The wooden column is also provided with a vertical reserved opening. The width of the horizontal reserved opening and the vertical reserved opening is greater than the diameter of the embedded screw and smaller than the diameter of the matching nut.

6. The connection device between a wooden column and a concrete foundation according to claim 1, characterized in that, The wooden pillars are made of cedar wood, the eccentric wheels are made of stainless steel, the circular stone bases are made of granite, and the rubber moisture-proof and shock-proof pads are elastic rubber pads.

7. The connection device between a wooden structure column and a concrete foundation according to claim 1, characterized in that, The depth of the vertical reserved hole is greater than the exposed length of the embedded screw, and a grouting filling gap is reserved.

8. A construction method for connecting a wooden column to a concrete foundation, using the connection device described in any one of claims 1-7, characterized in that, Includes the following steps: (1) Concrete foundation pouring: Multiple pre-embedded bolts are fixed as a whole by positioning steel plates, pre-embedded into the concrete foundation and poured into shape; (2) Installation of circular stone column bases: Clean the top surface of the concrete foundation, mark the positioning line, hoist the circular stone column bases into place and correct the levelness; (3) Installation of moisture-proof and shock-proof pads: Install rubber moisture-proof and shock-proof pads in the grooves of the circular stone column bases; (4) Prefabrication of wooden columns: Vertical pre-drilled holes and horizontal pre-drilled openings are pre-drilled on the wooden columns. (5) Installation of wooden posts: Align the vertical reserved holes of the wooden posts with the pre-embedded screws and insert them, and install the eccentric wheel in the horizontal reserved opening; (6) Eccentric wheel fastening: Rotate the eccentric wheel, adjust the height of the wooden column by gradually changing the thickness of the eccentric wheel and press it down, and intercept the toothed spring to achieve one-way self-locking; (7) Grouting and curing: Grouting material is injected into the vertical reserved hole through the grouting hole and cured under stable pressure until it is cured; (8) Surface treatment of wooden pillars: seal the reserved openings and sand and paint the surface.

9. The construction method for connecting a wooden column to a concrete foundation according to claim 8, characterized in that, In step (4), the diameter of the vertical reserved hole is adapted to the pre-embedded screw, and the diameter of the horizontal reserved opening is adapted to the outer diameter of the eccentric wheel.

10. The construction method for connecting a wooden column to a concrete foundation according to claim 8, characterized in that, In step (8), wood putty is used to fill the opening of the eccentric wheel installation. After sanding, primer and topcoat are applied in sequence to complete the surface protection.

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