An assembled steel tenon and wooden mortise combined joint and its manufacturing method

Abstract

The present invention relates to the field of wooden building structures, and discloses an assembled steel tenon and wooden mortise combined joint, which includes a lower wooden column, an upper wooden column, a tenon and mortise type steel filling plate, a rectangular wooden beam, a flat-section steel filling plate, and an L-shaped steel connector. The tenon and mortise type steel filling plates are arranged on the upper and lower sides of the rectangular wooden beam. The rectangular wooden beam is connected between the lower wooden column and the upper wooden column through the tenon and mortise type steel filling plates. Two flat-section steel filling plates are arranged on the lower wooden column and the upper wooden column. An L-shaped steel connector is arranged between the two rectangular wooden beams. The L-shaped steel connectors are connected to the corresponding L-shaped steel connectors through bolts. The present invention uses steel components as the tenon and mortise connectors of the wooden joints, reducing the material damage caused by grooving the wooden components in the traditional wooden tenon and mortise joints, thereby improving the mechanical properties of the joints. At the same time, this joint form is convenient for damage detection and repeated installation and disassembly, which is beneficial to the green circular use of wooden structure buildings.

Description

Technical Field

[0001] The present invention relates to the field of wooden building structures, and particularly to an assembled steel tenon and wooden mortise combined node and a manufacturing method thereof. Background Art

[0002] With the popularization and promotion of green circular buildings, wooden structures have been widely applied to building construction again due to their advantages such as light weight, low energy consumption, and environmental protection. At present, the connection methods of wooden structure beam-column joints are mainly divided into two categories. One is the traditional tenon and mortise connection method, and the other is the modern bolt or post-inserted bar connection. For the traditional tenon and mortise joints of wooden buildings, their manufacturing mechanization degree is low and the production efficiency is low, which cannot meet the high-efficiency construction characteristics of modern building structures. Moreover, the tenon and mortise joints are prone to weakening the original performance of the wood at the joints, resulting in adverse effects such as tenon disengagement, cracking, and fracture at the joints; compared with the tenon and mortise structure, metal connections are relatively convenient, but the construction adopts a point-by-point and step-by-step installation method, which has relatively high technical requirements for workers. In addition, metal connectors such as nails, bolts, toothed plates, split rings, shear plates, and hanger parts will cause certain damage to the original material performance of the wooden components at the initial stage of the force of the wooden structure joints, thus weakening the mechanical properties of the wooden components. In addition, these connectors are difficult to disassemble and reuse, which is not conducive to the recycling of temporary wooden buildings, nor is it conducive to the implementation of recycling measures such as inspection, repair, and reinforcement during the use of wooden buildings. For this reason, we propose an assembled steel tenon and wooden mortise combined node and a manufacturing method thereof. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the present invention provides an assembled steel tenon and wooden mortise combined node and a manufacturing method thereof, which solve the problems such as damage to the original mechanical properties of the beam and column ends during the anchoring of the existing wooden structure beam and column connectors, too concentrated local stress, restriction on the height and span of wooden structure buildings, relatively high installation technical requirements, and difficulty in disassembly and recycling in the later stage.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the present invention provides the following technical solution: An assembled steel tenon and wooden mortise combined node includes a lower wooden column, an upper wooden column, a tenon and mortise type steel filling plate, a rectangular wooden beam, a flat-section steel filling plate, and an L-shaped steel connector. The tenon and mortise type steel filling plates are arranged on the upper and lower sides of the rectangular wooden beam. The rectangular wooden beam is connected between the lower wooden column and the upper wooden column through the tenon and mortise type steel filling plates. Two flat-section steel filling plates are arranged on the lower wooden column and the upper wooden column. An L-shaped steel connector is arranged between the two rectangular wooden beams. The L-shaped steel connector is connected to the corresponding L-shaped steel connector through bolts.

[0007] Preferably, on one side end of the lower wooden column and the upper wooden column corresponding to each other, there are respectively provided a lower wooden column tenon and mortise notch and an upper wooden column tenon and mortise notch in the form of a right-angled corrugation. On the two side walls of the lower wooden column and the upper wooden column, there are respectively provided a through flat-section notch one and a flat-section notch two. The flat-section notch one and the flat-section notch two on different side walls are both in the form of a flat section and are perpendicular to each other, but the distances from them to the end of the wooden column are not equal, and the distance between them is at least the width of one notch. The flat-section steel filling plate is inserted into the flat-section notch one and the flat-section notch two. The depths of the lower wooden column and the upper wooden column are half of the heights of the flat-section notch one and the flat-section notch two. Both ends of the flat-section steel filling plate are provided with bolt holes, and the spacing and end distance should meet the regulations of the steel structure specification.

[0008] Preferably, at one end of the rectangular wooden beam corresponding to the lower wooden column and the upper wooden column, there is provided a wooden beam tenon and mortise notch.

[0009] Preferably, the tenon and mortise type steel filling plate is composed of a right-angled corrugated web and flanges. The right-angled corrugated web is fixedly installed on the flanges. One end of the right-angled corrugated web extends to the outside of the flanges. The end of the right-angled corrugated web extending to the outside of the flanges is clamped with the corresponding lower wooden column tenon and mortise notch and upper wooden column tenon and mortise notch, and the end of the right-angled corrugated web located on the flanges is clamped with the wooden beam tenon and mortise notch together.

[0010] Preferably, the height of the right-angled corrugated web is equal to half of the height of the wooden beam tenon and mortise notch, and the length of the flange is equal to the longitudinal depth of the wooden beam tenon and mortise notch.

[0011] Preferably, the L-shaped steel connecting piece is composed of an L-shaped angle steel and two L-shaped steel plates. The two L-shaped steel plates are fixedly installed at the upper and lower ends of the L-shaped angle steel, and there are threaded holes at one side end of the L-shaped steel plates far away from the L-shaped angle steel.

[0012] Preferably, the longitudinal length of the L-shaped angle steel is the distance between the flat-section notch one and the flat-section notch two on the same side of the lower wooden column and the upper wooden column, and the width is half of the flat-section steel filling plate minus the widths of the lower wooden column and the upper wooden column.

[0013] A manufacturing method of an assembled steel tenon and wooden mortise combined joint includes the following steps:

[0014] The first step: Four flat-section steel filling plates are respectively placed into the flat-section notch one and the flat-section notch two on both sides of the lower wooden column and the upper wooden column in the form of a cross orthogonal to form a first-level assembly;

[0015] The second step: The tenon and mortise type steel filling plate is embedded into the lower wooden column tenon and mortise notch of the lower wooden column from top to bottom at a predetermined position to form a second-level assembly. At this time, the flange is located below the right-angled corrugated web;

[0016] Step 3: Embed the rectangular wooden beam into the mortise and tenon type steel filler plate from top to bottom along the mortise and tenon groove of the wooden beam to form the third-level assembly;

[0017] Step 4: Embed the mortise and tenon type steel filler plate into the mortise and tenon groove of the rectangular wooden beam from top to bottom at the predetermined position to form the fourth-level assembly. At this time, the flange is located above the right-angled corrugated web;

[0018] Step 5: Repeat the above steps three times to form the fifth-level assembly;

[0019] Step 6: Embed the upper wooden column into the four mortise and tenon type steel filler plates from top to bottom at the predetermined position to form the sixth-level assembly;

[0020] Step 7: Embed the L-shaped steel connector horizontally on the flat-section steel filler plates where the upper and lower columns intersect, and repeat this process to complete the assembly of the four L-shaped steel connectors and the sixth-level assembly to form the seventh-level assembly;

[0021] Step 8: Install bolts to complete the installation of the joint.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the present invention provides a prefabricated steel mortise and tenon wood combination joint and its manufacturing method, having the following beneficial effects:

[0024] 1. The present invention uses steel components as the mortise and tenon connectors of the wooden joint, reducing the material damage caused by slotting the wooden components in the traditional wooden mortise and tenon joints, thereby improving the mechanical properties of the joint.

[0025] 2. All the slots in the wooden joint of the present invention have regular rectangular cross-sections. Compared with the slots of the traditional wooden mortise and tenon joints and the special-shaped slots of the currently commonly used bolt connections of steel filler plates in wooden structures, the manufacturing simplicity is greatly improved, reducing the time and labor required for slot manufacturing.

[0026] 3. The present invention uses steel components to transmit force and is finally stressed by bolt connections of steel components, improving the stiffness of the joint and enabling the joint to be accurately integrated and stressed, thereby improving the overall structural performance of the house.

[0027] 4. The right-angled corrugated web of the present invention is equivalent to adding some vertical stiffeners, improving the bending resistance of the joint area, and due to the transverse constraint of the corrugated web, the uplift resistance is improved.

[0028] 5. The present invention finally fixes the joint by means of bolt connection of steel components, reducing the material damage caused by connectors such as nail plates, bolts, toothed plates, split rings, shear plates, and hooking parts to the wooden components, thereby improving the mechanical properties of the joint;

[0029] 6. Compared with the general connection method of wooden beam-column joints, the present invention uses segmented wooden columns for connection and is fixed with steel components, reducing the limitations of building structures on height and span, and being more suitable for large-span and high-rise wooden building structures.

[0030] 7. A glue layer is applied in the middle of the upper and lower column bodies of the present invention, and the blind groove method is adopted, which is not only beautiful but also can avoid the cracking of the glue layer.

[0031] 8. The present invention facilitates the inspection, disassembly, replacement and reinforcement of steel components in case of damage during the long-term use of building structures, is conducive to the reuse of wooden joints, and prolongs the service life of the structure.

[0032] 9. All components of the present invention mainly adopt the method of factory prefabrication and on-site assembly. During the installation process, due to the mortise and tenon effect of the corrugated steel filling plate, the wooden components are laterally constrained and will not displace during the installation process, avoiding the occurrence of deviations. In addition, due to the interlacing of the flat-section steel filling plates on the adjacent surfaces of the upper and lower wooden columns, during the installation of the L-shaped steel connecting piece, it only needs to be positioned and clamped on the flat-section steel filling plate, which can avoid installation errors and make the installation process more convenient. Finally, the bolts are installed on the steel components, with basically no deviation and simple installation. This not only reduces the on-site operation of workers, but also has low requirements for the technical level of construction personnel, and the construction quality is easier to guarantee.

[0033] 10. When disassembling the joints of the present invention, only the reverse process of the assembly process needs to be implemented, which is simple and convenient and will not cause unnecessary damage to the wooden components, being conducive to the recycling of temporary wooden buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a three-dimensional structure diagram of the lower wooden column of the present invention;

[0035] Figure 2 is a top view of the lower wooden column of the present invention;

[0036] Figure 3 is a front view of the lower wooden column of the present invention;

[0037] Figure 4 is a side view of the lower wooden column of the present invention;

[0038] Figure 5 is a three-dimensional structure diagram of the upper wooden column of the present invention;

[0039] Figure 6 is a bottom view of the upper wooden column of the present invention;

[0040] Figure 7 is a front view of the upper wooden column of the present invention;

[0041] Figure 8Side view of the upper wooden column of the present invention;

[0042] Figure 9 Three-dimensional structure schematic diagram of the rectangular wooden beam of the present invention;

[0043] Figure 10 Three-dimensional structure schematic diagram of the mortise and tenon type steel filler plate of the present invention;

[0044] Figure 11 Three-dimensional structure schematic diagram of the flat-section steel filler plate of the present invention;

[0045] Figure 12 Three-dimensional structure schematic diagram of the L-shaped steel connecting piece for connecting the upper and lower columns of the present invention;

[0046] Figure 13 Three-dimensional structure schematic diagram of the assembled lower wooden column and the flat-section steel filler plate of the present invention;

[0047] Figure 14 Three-dimensional structure schematic diagram of the assembled single mortise and tenon type steel filler plate of the present invention;

[0048] Figure 15 Three-dimensional structure schematic diagram of the assembled single rectangular beam of the present invention;

[0049] Figure 16 Three-dimensional structure schematic diagram of the assembled single upper mortise and tenon type steel filler plate of the present invention;

[0050] Figure 17 Three-dimensional structure schematic diagram of the assembled cross-shaped rectangular beam of the present invention;

[0051] Figure 18 Three-dimensional structure schematic diagram of the assembled upper column with the flat-section steel filler plate installed of the present invention;

[0052] Figure 19 Three-dimensional structure schematic diagram of the assembled L-shaped steel connecting member of the present invention;

[0053] Figure 20 Three-dimensional structure schematic diagram of the complete joint formed by the bolt connection and assembly of the L-shaped steel connecting member and the flat-section steel filler plate of the present invention.

[0054] In the figure: 1. Lower wooden column; 2. Mortise and tenon groove of the lower wooden column; 3. First flat-section groove; 4. Upper wooden column; 5. Mortise and tenon groove of the upper wooden column; 6. Second flat-section groove; 7. Rectangular wooden beam; 8. Mortise and tenon groove of the wooden beam; 9. Mortise and tenon type steel filler plate; 10. Right-angled corrugated web; 11. Flange; 12. Flat-section steel filler plate; 13. L-shaped steel connecting piece; 14. L-shaped angle steel; 15. L-shaped steel plate; 16. Bolt. Detailed implementation manners

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0056] Please refer to Figures 1 - 13 , a prefabricated steel tenon and wooden mortise combined joint, including a lower wooden column 1, an upper wooden column 4, a tenon-mortise type steel filling plate 9, a rectangular wooden beam 7, a flat-section steel filling plate 12, and an L-shaped steel connector 13. The tenon-mortise type steel filling plate 9 is arranged on the upper and lower sides of the rectangular wooden beam 7. The rectangular wooden beam 7 is connected between the lower wooden column 1 and the upper wooden column 4 through the tenon-mortise type steel filling plate 9. Two flat-section steel filling plates 12 are arranged on the lower wooden column 1 and the upper wooden column 4. An L-shaped steel connector 13 is arranged between the two rectangular wooden beams 7. The L-shaped steel connector 13 is connected to the corresponding L-shaped steel connector 13 through bolts 16.

[0057] Further, on the mutually corresponding one-side end parts of the lower wooden column 1 and the upper wooden column 4, a lower wooden column tenon-mortise notch 2 and an upper wooden column tenon-mortise notch 5 in the form of a right-angled corrugation are respectively opened. On the two side walls of the lower wooden column 1 and the upper wooden column 4, a through-type flat-section notch one 3 and a flat-section notch two 6 are respectively opened. The flat-section notch one 3 and the flat-section notch two 6 on different side walls are both in the flat-section form and are perpendicular to each other, but the distances from them to the end of the wooden column are not equal, and the distance between the two is at least the width of one notch. The flat-section steel filling plate 12 is inserted into the flat-section notch one 3 and the flat-section notch two 6. The depths of the lower wooden column 1 and the upper wooden column 4 are half of the heights of the flat-section notch one 3 and the flat-section notch two 6. Both ends of the flat-section steel filling plate 12 are provided with bolt holes, and the spacing and end distance should meet the provisions of the steel structure specification.

[0058] Further, at one end of the rectangular wooden beam 7 corresponding to the lower wooden column 1 and the upper wooden column 4, a wooden beam tenon-mortise notch 8 is opened.

[0059] Further, the tenon-mortise type steel filling plate 9 is composed of a right-angled corrugated web 10 and a flange 11. The right-angled corrugated web 10 is fixedly installed on the flange 11. One end of the right-angled corrugated web 10 extends to the outside of the flange 11. The end of the right-angled corrugated web 10 extending to the outside of the flange 11 is clamped with the corresponding lower wooden column tenon-mortise notch 2 and upper wooden column tenon-mortise notch 5. One end of the right-angled corrugated web 10 located on the flange 11 is clamped together with the wooden beam tenon-mortise notch 8.

[0060] Further, the height of the right-angled corrugated web 10 is equal to half of the height of the wooden beam tenon-mortise notch 8, and the length of the flange 11 is equal to the longitudinal depth of the wooden beam tenon-mortise notch 8.

[0061] Furthermore, the L-shaped steel connector 13 is composed of an L-shaped angle steel 14 and two L-shaped steel plates 15. The two L-shaped steel plates 15 are fixedly installed at the upper and lower ends of the L-shaped angle steel 14, and threaded holes are provided at one end of the L-shaped steel plate 15 away from the L-shaped angle steel 14.

[0062] Furthermore, the longitudinal length of the L-shaped angle steel 14 is the distance between the flat-section notch one 3 and the flat-section notch two 6 on the same side of the lower wooden column 1 and the upper wooden column 4, and the width is half of the flat-section steel filling plate 12 minus the widths of the lower wooden column 1 and the upper wooden column 4.

[0063] As Figures 13 - 20 shown, a manufacturing method of an assembled steel mortise-tenon and wooden mortise-tenon combined joint includes the following steps:

[0064] First step: Four flat-section steel filling plates 12 are respectively placed into the flat-section notch one 3 and the flat-section notch two 6 on both sides of the lower wooden column 1 and the upper wooden column 4 in a cross-orthogonal form to form a first-level assembly;

[0065] Second step: The mortise-tenon type steel filling plate 9 is embedded into the lower wooden column mortise-tenon notch 2 of the lower wooden column 1 from top to bottom at a predetermined position to form a second-level assembly. At this time, the flange 11 is located below the right-angle corrugated web 10;

[0066] Third step: The rectangular wooden beam 7 is embedded on the mortise-tenon type steel filling plate 9 from top to bottom along the wooden beam mortise-tenon notch 8 to form a third-level assembly;

[0067] Fourth step: The mortise-tenon type steel filling plate 9 is embedded into the wooden beam mortise-tenon notch 8 of the rectangular wooden beam 7 from top to bottom at a predetermined position to form a fourth-level assembly. At this time, the flange 11 is located above the right-angle corrugated web 10;

[0068] Fifth step: Repeat the above steps three times to form a fifth-level assembly;

[0069] Sixth step: The upper wooden column 4 is embedded on the four mortise-tenon type steel filling plates 9 from top to bottom at a predetermined position to form a sixth-level assembly;

[0070] Seventh step: The L-shaped steel connector 13 is embedded on the flat-section steel filling plates 12 where the upper and lower columns intersect in the horizontal direction, and this process is repeated to complete the assembly of the four L-shaped steel connectors 13 and the sixth-level assembly to form a seventh-level assembly;

[0071] Eighth step: Install the bolts 16 to complete the installation of the joint.

[0072] The results of the embodiments show that the prefabricated steel-wood joint structure and assembly method of the present invention: instead of adopting the traditional mortise and tenon method of wood and wood, nor the current common conventional steel-wood bolt connection method, it adopts steel mortise and tenon wood components, uses steel plates to restrain the wooden beams in the joint, and finally fixes and restrains the upper and lower wooden columns through the bolt connection between steel components to achieve the stability of the overall joint. This not only reduces the complexity of the notch, but also reduces the damage to the original material of the wood caused by the irregular notch. Similarly, it also avoids the damage to the wood caused by the screw rod during the force-bearing process of the bolt connection joint. It saves space and is beautiful in architecture, and the connection structure is simple and the installation is more convenient; each component forming the joint can be prefabricated and processed in the factory, and the on-site construction is mainly assembly-based, and the workload of bolt installation is small; in summary, it can be seen that this joint form and assembly method save building space, the force transmission path is clear, it is safe and reliable, the construction is simple and convenient, meets the needs of actual engineering design and construction, is environmentally friendly and energy-saving, and this joint is conducive to disassembly, inspection, reinforcement and recycling, and better meets the requirements of current green buildings.

[0073] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled steel tenon and wooden mortise combined joint, characterized in that It includes a lower wooden column (1), an upper wooden column (4), a mortise-tenon type steel filling plate (9), a rectangular wooden beam (7), a flat-section steel filling plate (12), and an L-shaped steel connecting piece (13). The mortise-tenon type steel filling plate (9) is arranged on the upper and lower sides of the rectangular wooden beam (7). The rectangular wooden beam (7) is connected between the lower wooden column (1) and the upper wooden column (4) through the mortise-tenon type steel filling plate (9). Two flat-section steel filling plates (12) are arranged on the lower wooden column (1) and the upper wooden column (4). An L-shaped steel connecting piece (13) is arranged between the two rectangular wooden beams (7). The L-shaped steel connecting piece (13) is connected to the corresponding L-shaped steel connecting piece (13) through a bolt (16). On the mutually corresponding one-side end parts of the lower wooden column (1) and the upper wooden column (4), a lower wooden column mortise-tenon notch (2) and an upper wooden column mortise-tenon notch (5) in the form of a right-angled corrugation are respectively opened. On the two side walls of the lower wooden column (1) and the upper wooden column (4), a through flat-section notch one (3) and a through flat-section notch two (6) are respectively opened. The flat-section notch one (3) and the flat-section notch two (6) on different side walls are both in the flat-section form and are perpendicular to each other, but the distances from them to the end of the wooden column are not equal, and the distance between them is at least the width of one notch. The flat-section steel filling plate (12) is inserted into the flat-section notch one (3) and the flat-section notch two (6), and bolt holes are opened at both ends of the flat-section steel filling plate (12). The mortise-tenon type steel filling plate (9) is composed of a right-angled corrugated web (10) and a flange (11). The right-angled corrugated web (10) is fixedly installed on the flange (11). One end of the right-angled corrugated web (10) extends to the outside of the flange (11). The end of the right-angled corrugated web (10) extending to the outside of the flange (11) is clamped with the corresponding lower wooden column mortise-tenon notch (2) and upper wooden column mortise-tenon notch (5). The end of the right-angled corrugated web (10) located on the flange (11) is clamped together with the wooden beam mortise-tenon notch (8).

2. The assembled steel tenon and wooden mortise combined joint according to claim 1, characterized in that: The rectangular wooden beam (7) is provided with a wooden beam mortise-tenon notch (8) at one end corresponding to the lower wooden column (1) and the upper wooden column (4).

3. The assembled steel tenon and wooden mortise combined joint according to claim 1, characterized in that: The height of the right-angled corrugated web (10) is equal to half of the height of the wooden beam mortise-tenon notch (8), and the length of the flange (11) is equal to the longitudinal depth of the wooden beam mortise-tenon notch (8).

4. The assembled steel tenon and wooden mortise combined joint according to claim 1, wherein: The L-shaped steel connecting piece (13) is composed of an L-shaped angle steel (14) and two L-shaped steel plates (15). The two L-shaped steel plates (15) are fixedly installed at the upper and lower ends of the L-shaped angle steel (14), and threaded holes are opened at the one-side end parts of the L-shaped steel plates (15) far away from the L-shaped angle steel (14).

5. The assembled steel tenon and wooden mortise combined joint according to claim 4, wherein: The longitudinal length of the L-shaped angle steel (14) is the distance between the flat-section notch one (3) and the flat-section notch two (6) on the same side of the lower wooden column (1) and the upper wooden column (4), and the width is half of the flat-section steel filling plate (12) minus the widths of the lower wooden column (1) and the upper wooden column (4).

6. A manufacturing method for the assembled steel tenon and wooden mortise combined joint according to any one of claims 1-5, characterized in that, It includes the following steps: Step 1: Insert four flat-section steel fillers (12) into the flat-section notches one (3) and flat-section notches two (6) on both sides of the lower wooden column (1) and the upper wooden column (4) respectively in a cross-orthogonal form to form a first-level assembly; Step 2: Insert the mortise-and-tenon type steel filler (9) into the lower wooden column mortise-and-tenon notch (2) of the lower wooden column (1) from top to bottom at a predetermined position to form a second-level assembly. At this time, the flange (11) is located below the right-angle corrugated web (10); Step 3: Insert the rectangular wooden beam (7) into the mortise-and-tenon type steel filler (9) from top to bottom along the wooden beam mortise-and-tenon notch (8) to form a third-level assembly; Step 4: Insert the mortise-and-tenon type steel filler (9) into the wooden beam mortise-and-tenon notch (8) of the rectangular wooden beam (7) from top to bottom at a predetermined position to form a fourth-level assembly. At this time, the flange (11) is located above the right-angle corrugated web (10); Step 5: Repeat the operations in the above Step 2 to Step 4 three times in sequence to form a fifth-level assembly; Step 6: Insert the upper wooden column (4) into the four mortise-and-tenon type steel fillers (9) from top to bottom at a predetermined position to form a sixth-level assembly; Step 7: Insert the L-shaped steel connector (13) horizontally onto the flat-section steel fillers (12) where the upper and lower columns intersect, and repeat this process to complete the assembly of the four L-shaped steel connectors (13) with the sixth-level assembly to form a seventh-level assembly; Step 8: Install bolts (16) to complete the installation of the joint.

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