Special-shaped mortise and tenon steel-wood combined beam column joint and construction method thereof

Abstract

The invention discloses a special-shaped mortise and tenon steel-wood combined beam column joint and a construction method thereof. The joint comprises a lower column, an upper column and a wood beam, a steel plate and a steel sleeve are arranged at the joint of the lower column, the upper column and the wood beam, and the lower column and the upper column are connected through a core tube mortise and tenon; the steel plates are symmetrically distributed on the upper and lower sides of the wood beam; the steel plate comprises a cross-shaped flange and a special-shaped web plate, the special-shaped web plate distributed in a cross shape is arranged on the cross-shaped flange, the special-shaped web plate is connected with the wood beam in an inserted mode, the height of the special-shaped web plate is half of the height of the wood beam, the special-shaped web plate is in a W shape, and the special-shaped web plate comprises a plurality of steel plate bodies which form obtuse angles mutually. Under the condition of ensuring simple processing and good stress characteristics, the defects that steel is easy to lose stability and wood is anisotropic are overcome, and meanwhile, the advantage of a steel assembly type and the advantage of green and environment-friendly wood are fully reserved; the bearing capacity of the structure is greatly enhanced, and meanwhile, the appearance of the whole wood structure is not damaged; component prefabrication and field assembly are simple, convenient and fast.

Description

Technical Field

[0001] The invention belongs to a beam-column node and a construction method thereof, in particular to a special-shaped mortise and tenon steel-wood composite beam-column node and a construction method thereof. Background Art

[0002] As the modern construction field shifts towards environmental protection and energy conservation, wood has gradually become an important building material to replace traditional concrete and steel due to its light weight, low energy consumption and green environmental protection characteristics. It has extremely high research value and application potential. Compared with concrete and steel structures, wooden structures can significantly reduce carbon emissions during the construction process. At the same time, its unique connection method and material properties give wooden structures a faster construction speed.

[0003] However, in wooden structures, the node connection is a key part of the entire structure, and its performance directly affects the overall safety and stability of the building. Traditional pure wooden nodes are prone to problems such as wood cracking along the grain due to their low bearing capacity, and it is difficult to meet the requirements of modern buildings for structural strength. Some of the existing steel-wood combination systems simply change the nodes into pure steel nodes. Although the bearing capacity is improved, the ability of steel and wood to coordinate energy consumption is poor, and wooden components are easily damaged in earthquakes. In addition, these nodes also have obvious shortcomings in construction efficiency and cost control. They usually rely on on-site welding operations, which not only prolongs the construction period, but also increases the difficulty and cost of construction, which is not conducive to the pursuit of efficient construction and cost-effectiveness in modern buildings. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a special-shaped mortise and tenon steel-wood composite beam-column node with high bearing capacity and green environmental protection characteristics. Another purpose of the present invention is to provide a construction method for a special-shaped mortise and tenon steel-wood composite beam-column node with high efficiency, convenience, stable structure, fast construction, environmental protection and energy saving.

[0005] Technical solution: The special-shaped mortise and tenon joint of steel-wood composite beam-column described in the present invention comprises a lower column, an upper column and a wooden beam. Steel plates and steel sleeves are arranged at the connection between the lower column, the upper column and the wooden beam. The lower column and the upper column are connected by mortise and tenon joints through a core tube. The steel plates are symmetrically distributed on the upper and lower sides of the wooden beam. The steel plates comprise cross-shaped flanges and special-shaped webs. Special-shaped webs distributed in a cross shape are arranged on the cross-shaped flanges. The special-shaped webs are spliced ​​with the wooden beams. The height of the special-shaped webs is half of the height of the wooden beams. The special-shaped webs are W-shaped and comprise a plurality of steel plates which form obtuse angles with each other.

[0006] Furthermore, the wooden beams are distributed in a cross shape, the steel sleeves are arranged between adjacent wooden beams, and the two sides of the steel sleeves are respectively connected to the upper flange and the lower flange of the steel plate.

[0007] Furthermore, a lower column mortise and tenon groove is arranged on the top of the lower column, an upper column mortise and tenon groove is arranged on the bottom of the upper column, L-shaped and mutually corresponding lower column first mortise and tenon grooves and upper column first mortise and tenon grooves are respectively opened on the diagonals of the lower column and the upper column, lower column mortise and tenon sections are arranged at the four corners of the top of the lower column, and upper column mortise and tenon sections are arranged at the four corners of the bottom of the upper column.

[0008] Furthermore, a first dovetail mortise and a first dovetail tenon are arranged on the inner side of the mortise and tenon section of the lower column, a second dovetail mortise and a second dovetail tenon are arranged on the outer side of the mortise and tenon section of the upper column, the first dovetail mortise and the second dovetail tenon are riveted, and the first dovetail tenon and the second dovetail tenon are riveted.

[0009] Furthermore, the height of the mortise and tenon section of the lower column is the same as that of the mortise and tenon section of the upper column, and is equal to the sum of the thickness of the wooden beam and the thickness of the upper and lower cross-shaped flanges of the steel plate, and the ends of the wooden beams are provided with tenons and special-shaped notches.

[0010] Furthermore, the special-shaped web is riveted to the special-shaped groove, and the surface of the cross-shaped flange is provided with square holes and special-shaped mortise holes. The square holes are riveted to the mortise and tenon sections of the lower column and the mortise and tenon sections of the upper column. The special-shaped mortise holes correspond to the mortise and tenon grooves of the lower column and the mortise and tenon grooves of the upper column to accommodate the core tube.

[0011] Furthermore, special-shaped mortise holes are arranged around the core tube, and the special-shaped mortise holes correspond to the special-shaped mortise and tenon grooves, the special-shaped mortise and tenon grooves, and the special-shaped mortise holes, and the upper column, the lower column and the steel plate are anchored into a whole through the mortise and tenon connection.

[0012] Furthermore, a mortise and tenon joint is provided on a side of the cross-shaped flange that is different from the special-shaped web, and the mortise and tenon joint is plugged into the first mortise and tenon groove, and the mortise and tenon joint is plugged into the first mortise and tenon groove.

[0013] Furthermore, the steel sleeve includes channel steel 1, channel steel 2 and angle steel. The angle steel is located on the outer surface of the mortise and tenon section of the lower column, and its height is the same as that of the wooden beam. Channel steel 1 and channel steel 2 are respectively attached to the surfaces of adjacent wooden beams.

[0014] A construction method of a special-shaped mortise and tenon steel-wood composite beam-column node of the present invention comprises the following steps:

[0015] S1, connect the lower column to the core tube by mortise and tenon joints, and connect the steel plate to the lower column and the core tube by mortise and tenon joints;

[0016] S2, connect the wooden beams with the cross-shaped mortise and tenon steel plates and butt them against the core tube;

[0017] S3, pass another cross-shaped mortise and tenon steel plate through the core tube and fix the side with the special-shaped web plate to the upper surface of the wooden beam;

[0018] S4, in the opposite direction to S1, connect the upper column with the lower column, the core tube and the connected steel plate with mortise and tenon joints;

[0019] S5, passing the steel sleeves between the steel plates and fitting them to the adjacent wood beams;

[0020] S6, fix the steel plate and steel sleeve to complete the node installation.

[0021] Working principle: The center of the top of the lower column is provided with a lower column mortise and tenon groove for mortise and tenon connection with the core tube. Special-shaped mortise holes are provided around the core tube. These mortise holes correspond to the special-shaped mortise and tenon grooves of the lower column. The core tube is stably fixed on the lower column through the mortise and tenon connection. A special-shaped groove is provided at one end of the wooden beam for riveting with the special-shaped web of the cross-shaped mortise and tenon steel plate. The cross-shaped mortise and tenon steel plate consists of a cross-shaped flange and a special-shaped web. The special-shaped web matches the special-shaped groove of the wooden beam and is tightly connected by riveting. Square holes are opened on the cross-shaped flange. These holes are riveted with the mortise and tenon sections of the lower column and the mortise and tenon sections of the upper column to connect the steel plate to the column. There is an upper column mortise and tenon groove at the center of the bottom of the upper column, which corresponds to the special-shaped mortise hole of the core tube to realize the mortise and tenon connection with the core tube. There are also special-shaped mortise holes on the cross-shaped flange, which correspond to the mortise and tenon grooves of the lower column and the upper column, further enhancing the stability of the connection. Mortise and tenon heads are provided on one side of the cross-shaped flange, which are riveted to the first mortise and tenon grooves of the lower column and the upper column to achieve a stable connection in the horizontal direction. The W-shaped steel sleeve is composed of channel steel one, channel steel two and angle steel, which is fitted between two adjacent wooden beams. The W-shaped steel sleeve not only enhances the connection strength between the wooden beams, but also provides better rigidity for the entire structure through its unique structural shape.

[0022] Beneficial effects: Compared with the prior art, the present invention has the following significant features:

[0023] 1. While ensuring simple processing and good stress characteristics, it overcomes the shortcomings of easy instability of steel and anisotropy of wood, and at the same time fully retains the advantages of steel assembly and the advantages of green and environmentally friendly wood. By using the characteristics of embedded steel structure, it greatly enhances the bearing capacity of the structure while ensuring that the appearance of the overall wood structure is not damaged;

[0024] 2. Structural components are prefabricated and transported in the factory to avoid on-site welding. Standardized prefabrication in the factory only requires simple on-site installation and bolt connection, which shortens the construction period. Most components are symmetrical components with highly unified structural forms and sizes, making on-site assembly easier and faster, further improving construction efficiency, not only reducing costs but also improving resource utilization efficiency;

[0025] 3. The core tube connects the upper column and the lower column, so that the pressure of the upper and lower columns is mainly borne by the core tube; the cross-shaped mortise and tenon steel plates and W-shaped steel sleeves are respectively arranged around the wooden beams, and the wooden beams are mainly connected to the upper and lower columns through the cross-shaped mortise and tenon steel plates, which greatly reduces the pressure on the wooden beams, and the steel structure is used to reinforce the whole, making the node more integrated and more stable, improving the bearing capacity of the node, and providing a strong guarantee for the safety and durability of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the lower column 1 of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the upper column 2 of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the wooden beam 3 of the present invention;

[0030] Figure 5 It is a schematic structural diagram of one side of the steel plate 4 of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the other side of the steel plate 4 of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the core tube 6 of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the steel sleeve 5 of the present invention;

[0034] Fig. 9 It is an installation flow chart of the present invention. DETAILED DESCRIPTION

[0035] like Figure 1The special-shaped mortise and tenon steel-wood composite beam-column node includes a square wooden beam 3 with a cross-sectional size of 200×400mm, a steel plate 4 with a thickness of 5mm, and a steel sleeve 5 with a wall thickness of 5mm. The core tube 6 is located between the lower column 1 and the upper column 2 with a cross-sectional size of 400×400mm. The steel plate 4 is a cross-shaped mortise and tenon steel plate 4, and the steel sleeve 5 is a W-shaped steel sleeve 5. The lower column 1 and the upper column 2 are riveted through the core tube 6, and the wooden beam 3 is fixed between the upper column 2 and the lower column 1 through the steel plate 4. The number of wooden beams 3 and steel sleeves 5 is four, and the four wooden beams 3 are distributed in a cross shape. The steel sleeve 5 is fixed between two adjacent wooden beams 3 by using 10.9 grade high-strength bolts M10, and the upper and lower sides of each steel sleeve 5 are connected and fixed to the upper flange and lower flange of the upper and lower steel plates 4 by bolts. Among them, the lower column 1 and the upper column 2 serve as the main supporting structure of the beam-column node. They jointly support the entire structure and transfer the load from above or from the side. The introduction of the wooden beam 3 makes the entire structure lighter and more environmentally friendly, and improves the overall performance of the structure. The introduction of the steel plate 4 makes the connection of the entire beam-column node more firm and stable, and improves the bearing capacity and seismic performance of the node. The introduction of the steel sleeve 5 significantly improves the bearing capacity of the entire beam-column node, while also improving the stiffness and stability of the node. The design of the core tube 6 makes the structure of the entire node more compact and reasonable, and can effectively improve the overall performance of the node.

[0036] like Figures 2 to 4A mortise and tenon groove 11 with a horizontal long side of 25 mm and a short side of 20 mm is arranged at the center of the top of the lower column 1 with a cross-sectional size of 400×400 mm, and an upper column mortise and tenon groove 21 is arranged at the center of the bottom of the upper column 2. An L-shaped first mortise and tenon groove 13 with a horizontal side length of 60 mm for the lower column and a first mortise and tenon groove 23 for the upper column are respectively provided on a diagonal line of the lower column 1 and the upper column 2, and the two grooves correspond to each other in the up and down directions. The four corners of the top of the lower column 1 are fixedly installed with the lower column mortise and tenon sections 12, and the four corners of the bottom of the upper column 2 are fixedly installed with the upper column mortise and tenon sections 22. The inner side of the lower column mortise and tenon section 12 is provided with a first dovetail mortise 121 and a first dovetail tenon 122 with a horizontal long side of 30 mm and a short side of 15 mm, and the outer side of the upper column mortise and tenon section 22 is provided with a second dovetail mortise 221 and a second dovetail tenon 222, wherein the first dovetail mortise 121 is riveted to the second dovetail tenon 222, and the first dovetail tenon 122 is riveted to the second dovetail tenon 221. The height of the lower column mortise and tenon section 12 and the upper column mortise and tenon section 22 is 410 mm, which is equal to the sum of the thickness of the wood beam 3 and the thickness of the upper and lower cross-shaped flanges 41 of the steel plate 4, and one end of the wood beam 3 is provided with a tenon 31 with a short side of 70 mm and a special-shaped notch 32. The mortise and tenon grooves 11 of the lower column and the mortise and tenon grooves 21 of the upper column are both connected to the core tube 6 by mortise and tenon connection to achieve a stable connection in the vertical direction. The first mortise and tenon groove 13 of the lower column is riveted to the mortise and tenon head 413 of the steel plate 4 located below the wooden beam 3 to enhance the horizontal connection strength of the node. The first mortise and tenon groove 23 of the upper column is riveted to the mortise and tenon head 413 of the steel plate 4 located above the wooden beam 3 to enhance the horizontal connection strength of the node. The mortise and tenon section 12 of the lower column is riveted to the mortise and tenon section 22 of the upper column 2, and the connection is further reinforced by the steel plate 4.

[0037] like Figures 5-6The number of steel plates 4 is two, and they are symmetrically distributed on the upper and lower sides of the wood beam 3. The steel plate 4 consists of a cross-shaped flange 41 and a special-shaped web 42 with a bending angle of 20 degrees. The special-shaped web 42 is riveted to the special-shaped notch 32, and the height of the special-shaped web 42 is 200mm, which is equal to half the height of the wood beam 3. The surface of the cross-shaped flange 41 is provided with four square holes 411 with a side length of 100mm and a special-shaped mortise hole 412. The square hole 411 is riveted to the lower column mortise section 12 and the upper column mortise section 22. The special-shaped mortise hole 412 corresponds to the lower column mortise notch 11 and the upper column mortise notch 21. In order to accommodate the core tube 6 (with a side length of 100 mm), a mortise and tenon 413 with a horizontal side length of 60 mm is fixedly installed on one side of the cross-shaped flange 41, and the mortise and tenon 413 is located on the opposite side of the cross-shaped flange 41, wherein the mortise and tenon 413 on the cross-shaped flange 41 of the steel plate 4 located below the wood beam 3 is riveted with the first mortise and tenon notch 13 of the lower column 1, and correspondingly, the mortise and tenon 413 on the cross-shaped flange 41 of the steel plate 4 located above the wood beam 3 is riveted with the first mortise and tenon notch 23 of the upper column 2. The 5 mm thick steel plate 4 not only plays a connecting role, but also rivets with the shaped notch 32 of the wood beam 3 through its special-shaped web 42, thereby enhancing the stability and bearing capacity of the connection. At the same time, the square hole 411 and the special-shaped mortise hole 412 on the cross-shaped flange 41 are riveted with the mortise and tenon section 12 of the lower column and the mortise and tenon section 22 of the upper column, respectively, further enhancing the connection strength of the node.

[0038] like Figure 7 The core tube 6 is provided with special-shaped mortise holes 61 with a horizontal long side of 25 mm and a short side of 20 mm all around. The special-shaped mortise holes 61 correspond to the special-shaped tenon and mortise notches 11 of the lower column, the special-shaped tenon and mortise notches 21 of the upper column, and the special-shaped mortise holes 412 provided on the steel plate 4. The upper column 2, the lower column 1, and the steel plate 4 are anchored into a whole through the tenon and mortise connection. The core tube 6 not only connects the lower column 1 and the upper column 2, but also connects with the steel plate 4 through its unique special-shaped mortise holes 61, thereby enhancing the overall performance of the node.

[0039] like Figure 8 The steel sleeve 5 is composed of a channel steel 1 51 with a cross-sectional area of ​​500×400mm, a channel steel 2 52 with a cross-sectional area of ​​500×400mm, and an angle steel 53 with a side length of 100mm and a height of 400mm. The angle steel 53 is located on the outer surface of the lower column mortise and tenon section 12, and its height is the same as that of the wood beam 3. The channel steel 1 51 and the channel steel 2 52 are respectively attached to the surfaces of the two left and right wood beams 3 of the corresponding lower column mortise and tenon section 12. The steel sleeve 5 with a wall thickness of 5mm not only enhances the connection strength between the wood beams 3, but also provides a certain rigidity for the entire structure through its unique structural shape. At the same time, the steel sleeve 5 is also connected to the steel plate 4 through bolts, further enhancing the overall performance of the node.

[0040] like Fig. 9 The construction method of the above-mentioned special-shaped mortise and tenon steel-wood composite beam-column node specifically includes the following steps:

[0041] S1, connect the lower column mortise and tenon groove 11 in the lower column 1 with the special-shaped mortise hole 61 in the core tube 6 by mortise and tenon connection, and align the special-shaped mortise hole 412 in the steel plate 4 and the L-shaped mortise and tenon head provided on the 45-degree side plate part with the lower column 1, the special-shaped mortise hole 61 in the core tube 6, the L-shaped first mortise and tenon groove 13 of the lower column, and the second mortise and tenon groove 14 of the lower column, and insert the mortise and tenon connection from top to bottom.

[0042] S2, align the tenon 31 and the special-shaped mortise 32 provided on the wooden beam 3 with the mortise holes formed between the core tube 6 and the mortise and tenon section 12 of the lower column and the special-shaped web 42 in the steel plate 4 and connect them from top to bottom.

[0043] S3, another identical steel plate 4 is passed through the core tube 6 to fix one side with the special-shaped web 42 to the upper surface of the wooden beam 3.

[0044] S4, following the same steps as step 1, connect the mortise and tenon section 22 at the bottom of the upper column to the lower column 1, the core tube 6 and the steel plate 4 from top to bottom.

[0045] S5, passing the steel sleeve 5 between the two steel plates 4 and fitting the two adjacent wooden beams 3.

[0046] S6, fix with bolts through the upper and lower flanges of the channel steel 1 51 and the channel steel 2 52 in the W-shaped steel sleeve 5 and the bolt holes reserved at the edges of the cross-shaped flanges 41 in the two steel plates 4 to complete the node installation.

Claims

1. A special-shaped mortise and tenon steel-wood composite beam-column node, characterized in that: The invention comprises a lower column (1), an upper column (2) and a wooden beam (3), wherein steel plates (4) and steel sleeves (5) are arranged at the connection points between the lower column (1), the upper column (2) and the wooden beam (3), and the lower column (1) and the upper column (2) are connected by mortise and tenon joints through a core tube (6); the steel plates (4) are symmetrically distributed on the upper and lower sides of the wooden beam (3); the steel plates (4) comprise cross-shaped flanges (41) and special-shaped webs (42); the cross-shaped flanges (41) are provided with special-shaped webs (42) distributed in a cross shape; the special-shaped webs (42) are plugged into the wooden beam (3); the height of the special-shaped webs (42) is half the height of the wooden beam (3); the special-shaped webs (42) are W-shaped, and the special-shaped webs (42) comprise a plurality of steel plates which form obtuse angles with each other.

2. A special-shaped mortise and tenon steel-wood composite beam-column node according to claim 1, characterized in that: The wooden beams (3) are distributed in a cross shape, the steel sleeves (5) are arranged between adjacent wooden beams (3), and the two sides of the steel sleeves (5) are respectively connected to the upper flange and the lower flange of the steel plate (4).

3. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 1, characterized in that: A lower column mortise and tenon groove (11) is arranged on the top of the lower column (1), an upper column mortise and tenon groove (21) is arranged on the bottom of the upper column (2), L-shaped and mutually corresponding lower column first mortise and tenon grooves (13) and upper column first mortise and tenon grooves (23) are respectively opened on the diagonal lines of the lower column (1) and the upper column (2), lower column mortise and tenon sections (12) are arranged at the four corners of the top of the lower column (1), and upper column mortise and tenon sections (22) are arranged at the four corners of the bottom of the upper column (2).

4. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 3 is characterized in that: A first dovetail mortise (121) and a first dovetail tenon (122) are arranged on the inner side of the lower column mortise and tenon section (12), and a second dovetail mortise (221) and a second dovetail tenon (222) are arranged on the outer side of the upper column mortise and tenon section (22), the first dovetail mortise (121) and the second dovetail tenon (222) are riveted, and the first dovetail tenon (122) and the second dovetail tenon (221) are riveted.

5. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 3 is characterized in that: The height of the lower column mortise and tenon cross section (12) is the same as that of the upper column mortise and tenon cross section (22), and is equal to the sum of the thickness of the wooden beam (3) and the thickness of the upper and lower cross-shaped flanges (41) of the steel plate (4). The end of the wooden beam (3) is provided with a tenon (31) and a special-shaped notch (32).

6. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 3, characterized in that: The special-shaped web (42) is riveted to the special-shaped notch (32); a square hole (411) and a special-shaped mortise (412) are provided on the surface of the cross-shaped flange (41); the square hole (411) is riveted to the mortise and tenon section (12) of the lower column and the mortise and tenon section (22) of the upper column; the special-shaped mortise (412) corresponds to the mortise and tenon notch (11) of the lower column and the mortise and tenon notch (21) of the upper column, and is used to accommodate the core tube (6).

7. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 6, characterized in that: The core tube (6) is provided with special-shaped mortise holes (61) on all sides, and the special-shaped mortise holes (61) correspond to the special-shaped mortise and tenon notches (11), the special-shaped mortise and tenon notches (21), and the special-shaped mortise holes (412), and the upper column (2), the lower column (1) and the steel plate (4) are anchored into a whole through the mortise and tenon connection.

8. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 1, characterized in that: A mortise and tenon joint (413) is provided on a side of the cross-shaped flange (41) that is different from the special-shaped web (42), and the mortise and tenon joint (413) is plugged into the first mortise and tenon joint groove (13), and the mortise and tenon joint (413) is plugged into the first mortise and tenon joint groove (23).

9. The special-shaped mortise and tenon steel-wood composite beam-column node according to claim 1, characterized in that: The steel sleeve (5) comprises a first channel steel (51), a second channel steel (52) and an angle steel (53). The angle steel (53) is located on the outer surface of the mortise and tenon section (12) of the lower column and has the same height as the wooden beam (3). The first channel steel (51) and the second channel steel (52) are respectively attached to the surfaces of adjacent wooden beams (3).

10. A construction method for a special-shaped mortise and tenon steel-wood composite beam-column node according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, connecting the lower column (1) and the core tube (6) by mortise and tenon joints, and connecting the steel plate (4) and the lower column (1) and the core tube (6) by mortise and tenon joints; S2, connecting the wooden beam (3) and the steel plate (4) by mortise and tenon joints and butting them against the core tube (6); S3, pass another steel plate (4) through the core tube (6), and fix the side with the special-shaped web (42) to the upper surface of the wooden beam (3); S4, in the opposite direction to S1, the upper column (2) is connected with the lower column (1), the core tube (6) and the already connected steel plate (4) by mortise and tenon joints; S5, passing the steel sleeve (5) through the steel plates (4) and fitting the steel sleeve (5) to the adjacent wooden beams (3); S6, fix the steel plate (4) and the steel sleeve (5) to complete the node installation.

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