A fully assembled steel-wood composite node with S-shaped steel plate and its construction method

Abstract

The present invention discloses a fully assembled steel-wood composite node with an S-shaped steel plate and a construction method thereof. The node includes a wooden column, a wooden beam, and a steel plate. The wooden column and the wooden beam are connected by mortise and tenon joints. The steel plate includes an S-shaped steel plate and a horizontal steel plate perpendicular to each other. The S-shaped steel plate is embedded in the connection between the wooden column and the wooden beam, and the horizontal steel plate is arranged on the outer surface of the wooden beam. A lateral sleeve and a corrugated steel energy-absorbing plate are arranged at the connection between the wooden column and the wooden beam. The lateral sleeve is connected to the wooden column by self-tapping screws, and the horizontal steel plate, the lateral sleeve, and the corrugated steel energy-absorbing plate are connected to the wooden beam by tension bolts. The S-shaped steel plate includes an S-shaped positive hook end and an S-shaped reverse hook end. The S-shaped positive hook end is connected to the wooden column, and the S-shaped reverse hook end is connected to the wooden beam. The S-shaped positive hook end and the S-shaped positive and reverse ends each include at least two right angles. The main material of the node of the present invention is wood, and steel is scientifically and rationally used for reinforcement. While giving full play to the advantages of wood and steel, the strength and stability of the node are also improved, the earthquake resistance is enhanced, and the tensile and compressive properties of the support are good.

Description

Technical Field

[0001] The invention relates to a steel-wood node and a construction method thereof, in particular to a fully assembled steel-wood combination node with an S-shaped steel plate and a construction method thereof. Background Art

[0002] With the construction industry's increasing focus on energy conservation, steel structures are finding increasingly widespread application. Wood, the only renewable building material in the industry, boasts advantages such as a high strength-to-weight ratio, environmental sustainability, durability, and insulation. However, due to natural defects, wood's tensile strength along the grain is significantly greater than its strength across the grain. Steel offers advantages such as high strength, lightweight, good plasticity, and ductility, but it is susceptible to instability and exhibits poor fire resistance. The rational and appropriate use of steel for reinforcement within wood structures leverages the strengths of both materials, achieving both reduced weight and increased strength.

[0003] However, during the construction of existing timber structures, the square beam and circular column nodes require complex processing, requiring high precision and a long processing cycle. Furthermore, after processing, the square beam and circular column nodes suffer from reduced overall performance, mechanical properties, and seismic resistance, as well as the vulnerability of small components at the node to damage and the inability to replace components. Patented invention with application publication number 202311699668.5, which describes an assembled steel-log column joint with a sleeved energy-absorbing plate and its construction method, reinforces the beam-column joint with a steel sleeve. While this improves the joint's bearing capacity and seismic resistance, the steel sleeve is integral and requires disassembly of the upper and lower columns before it can be replaced, making replacement of the sleeve difficult. Patented invention with application publication number 202311487059.3, which describes a clustered, clad steel-wood energy-absorbing composite joint and its installation method, reinforces it with double-arc-shaped mild steel energy-absorbing supports. While this improves the joint's seismic resistance, its high stiffness makes it difficult to stretch or compress the supports.

[0004] In general, there is an urgent need to enhance the seismic performance of the nodes and improve the tensile and compressive performance of the supports. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a fully assembled steel-wood composite node with an S-shaped steel plate, which has good seismic performance and is convenient for replacing parts. Another purpose of the present invention is to provide a construction method for a fully assembled steel-wood composite node with an S-shaped steel plate, which has high construction efficiency, is convenient and practical.

[0006] Technical solution: The fully assembled steel-wood composite node described in the present invention includes wooden columns, wooden beams, and steel plates, and the wooden columns and wooden beams are connected by mortise and tenon joints; the steel plates include S-shaped steel plates and horizontal steel plates that are perpendicular to each other, the S-shaped steel plates are embedded in the connection between the wooden columns and the wooden beams, and the horizontal steel plates are arranged on the outer surface of the wooden beams; lateral sleeves and corrugated steel energy-absorbing plates are arranged at the connection between the wooden columns and the wooden beams, the lateral sleeves are connected to the wooden columns by self-tapping screws, and the horizontal steel plates, lateral sleeves, and corrugated steel energy-absorbing plates are connected to the wooden beams by tension bolts; the S-shaped steel plate includes an S-shaped positive hook end and an S-shaped reverse hook end, the S-shaped positive hook end is connected to the wooden column, and the S-shaped reverse hook end is connected to the wooden beam, and the S-shaped positive hook end and the S-shaped positive and reverse ends each include at least two right angles.

[0007] Furthermore, the corrugated steel energy dissipation plate comprises an L-shaped steel plate and a bent plate. The bent plate is connected to the L-shaped steel plate at both ends. The bent plate comprises several mutually perpendicular surfaces. Because the bent plate is stretched and compressed under external loads, its unique shape can absorb a certain amount of energy through its own plastic deformation ability.

[0008] Furthermore, the wooden column includes a lower wooden column and an upper wooden column, the lower wooden column is provided with a lower wooden column dovetail mortise and a lower wooden column S-shaped straight hook groove, the upper wooden column is provided with an upper wooden column dovetail mortise and an upper wooden column S-shaped straight hook groove, the lower wooden column S-shaped straight hook groove and the upper wooden column S-shaped straight hook groove match the S-shaped straight hook end.

[0009] Furthermore, the depths of the S-shaped straight hook groove of the lower wooden column and the S-shaped straight hook groove of the upper wooden column are the same.

[0010] Furthermore, a dovetail tenon and an S-shaped reverse hook groove are provided at one end of the wooden beam close to the wooden column. The S-shaped reverse hook groove of the wooden beam matches the S-shaped reverse hook end. The lower wooden column dovetail mortise and tenon groove, the upper wooden column dovetail mortise and tenon groove are connected to the dovetail tenon and tenon of the wooden beam.

[0011] Furthermore, the depth of the dovetail tenon of the wooden beam inserted into the dovetail groove of the lower wooden column is the same as the depth of the dovetail tenon inserted into the dovetail groove of the upper wooden column.

[0012] Furthermore, the wooden beam also includes a wooden beam curved surface that fits the outer surface of the wooden column.

[0013] Furthermore, the lateral covering plates include lateral column covering plates, lateral beam wide covering plates, lateral beam narrow covering plates and lateral beam spacer covering plates. The lateral column covering plates and lateral beam spacer covering plates are arranged on the outer surface of the wooden columns, and the lateral beam wide covering plates and lateral beam narrow covering plates are arranged on the outer surface of the wooden beams.

[0014] Furthermore, bolt holes are provided on the wide sleeves of the lateral beams and the narrow sleeves of the lateral beams, and screw holes are provided on the sleeves of the lateral columns.

[0015] The construction method of the above-mentioned fully assembled steel-wood composite node includes the following steps:

[0016] Step 1: Insert the S-shaped hook end of the steel plate into the S-shaped hook groove of the wooden beam, and assemble the steel plate and the square wooden beam into a composite beam;

[0017] Step 2: Connect the wooden beam and the lower wooden column with mortise and tenon joints. The S-shaped hook end on the composite beam overlaps the S-shaped hook groove of the lower wooden column, and the dovetail mortise groove of the lower wooden column and the S-shaped hook groove of the lower wooden column are inserted to half the height of the wooden beam.

[0018] Step 3: Connect the upper wooden column to the wooden beam with mortise and tenon joints, and insert the upper wooden column into the S-shaped hook end, and insert them to the remaining half of the height of the wooden beam;

[0019] Step 4: Place the lateral sheathing between the wooden beams so that the composite beams and wooden columns are surrounded by the lateral sheathing;

[0020] Step 5: Place the corrugated steel energy-absorbing plate directly above the lateral sleeve on the wooden beam, with the bolt holes on the corrugated steel energy-absorbing plate corresponding to the positions of the bolt holes on the wooden beam and the lateral sleeve.

[0021] Step six: Use tension bolts to bolt the wooden beams, steel plates, lateral sleeves and corrugated steel energy-absorbing plates together, and use self-tapping screws to fix the upper wooden columns and lateral sleeves together.

[0022] Working principle: When the steel-wood composite node of the present invention is subjected to external load, when the load value is small, the internal force is mainly shared by the steel plate and the tension bolts, and the displacement generated at the beam end is small at this time; when the load value gradually increases, the tension bolts begin to yield, and the vertical displacement of the beam end gradually increases. At this time, the S-shaped positive hook end of the S-shaped steel plate and the wooden column are gradually tightened, and at the same time, the bent plate of the corrugated steel energy-absorbing plate produces elastic deformation; when the load value increases further, the tension bolts completely yield along the rod body, and the steel plate area near the node also reaches yield. At this time, the S-shaped positive hook end of the S-shaped steel plate is completely tightened with the wooden column, effectively delaying the premature pulling out of the wooden beam, and at the same time, the bent plate of the corrugated steel energy-absorbing plate produces plastic deformation and absorbs part of the structural energy.

[0023] Beneficial effects: Compared with the prior art, the present invention has the following significant features:

[0024] 1. The main material of the node is wood, and steel is used for reinforcement in a scientific and reasonable manner. While giving full play to the advantages of wood and steel, the strength and stability of the node are improved, the seismic performance is enhanced, and the tensile and compressive properties of the support are good;

[0025] 2. All wood and steel components can be mass-produced in the factory in advance and fully assembled on site, which not only saves manpower but also speeds up construction and improves construction quality;

[0026] 3. The lateral sleeves and corrugated steel energy-absorbing plates can effectively improve the seismic performance of the structure, and the components can be replaced at any time after damage;

[0027] 4. Steel plates, lateral sleeves, and corrugated steel energy-absorbing plates are used to reinforce wooden beams and columns, and high-strength tension bolts and self-tapping screws are used for bolt connection to enhance the nodes' ability to resist bending deformation;

[0028] 5. The wooden beams and steel plates are overlapped and assembled into composite beams, and the S-shaped hook ends on the steel plates are overlapped with the S-shaped hook grooves of the lower wooden columns, which not only strengthens the vertical bearing capacity of the wooden beams but also enhances the overall mechanical properties between the beams and columns;

[0029] 6. The lower and upper wooden columns are connected by dovetail joints of wooden beams and S-shaped steel plates, and are reinforced with lateral sleeves and corrugated steel energy-absorbing plates to enhance the overall mechanical properties of the steel-wood composite nodes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the lower wooden column 11 of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the upper wooden column 12 of the present invention;

[0033] Figure 4 This is a schematic structural diagram of a wooden beam 2 according to the present invention;

[0034] Figure 5 It is a schematic structural diagram of the steel plate 3 of the present invention;

[0035] Figure 6 This is a schematic structural diagram of the lateral sleeve plate 4 of the present invention;

[0036] Figure 7 This is a schematic structural diagram of the corrugated steel energy-absorbing plate 5 of the present invention;

[0037] Figure 8 It is a construction flow chart of the present invention;

[0038] Figure 9 This is a diagram of the simulated failure state of the pure square timber beam and circular timber column joint;

[0039] Figure 10 This is a diagram of the simulated failure state of a square timber beam and circular timber column joint with embedded G-shaped steel plates;

[0040] Figure 11 This is a diagram of the simulated failure state of a square timber beam and circular timber column joint with embedded S-shaped steel plates;

[0041] Figure 12This is a graph showing the rotation angle and mortise and tenon amount for three different types of wooden beams and columns.

[0042] Figure 13 It is a simulated overall destruction state diagram of the node of the present invention;

[0043] Figure 14 This is a diagram of a simulated failure state of the high-strength tension bolt of the present invention. DETAILED DESCRIPTION

[0044] like Figure 1 The fully assembled steel-wood composite node includes a circular wooden column 1 with a diameter of 150mm, a square wooden beam 2 with a cross-sectional dimension of 100×150mm, a 2mm-thick steel plate 3, a 2mm-thick lateral sleeve 4, and a 2mm-thick corrugated steel energy absorption plate 5. The 2mm-thick steel plate 3 is slowly inserted into the wooden beam 2 to assemble into a composite beam with a cross-sectional dimension of 100×150mm. The dovetail tenon 211 and S-shaped hook end 311 of the upper wooden beam 2 are aligned with the reserved dovetail mortise 111 and S-shaped hook groove 112 of the lower wooden column 11, respectively, and then inserted into the lower wooden column 11 to a depth of half the height of the wooden beam 2. The longest and shortest horizontal lengths of the dovetail tenon are 50mm and 25mm, respectively. The S-shaped hook groove extends 55mm into the column, and the corner length is 15mm. The reserved dovetail groove 121 and S-shaped hook groove 122 of the upper wooden column 12 are aligned with the dovetail tenon 211 and S-shaped hook end 311 of the wooden beam and slowly connected by mortise and tenon. Four identical lateral sleeves 4 are placed at the corners of the beam-column node. Then, the corrugated steel energy-absorbing plate 5 is placed directly above the lateral sleeve 4 of the wooden beam 2. The width of the beam wide / narrow sleeve is 97mm / 57mm. Then, high-strength tension bolts are used to bolt the wooden beam 2, steel plate 3, lateral sleeve 4 and corrugated steel energy-absorbing plate 5 together. The high-strength tension bolts are friction-type high-strength bolts 10.9 grade M10. Self-tapping screws are used to connect the upper wooden column 12 with a diameter of 150mm and the lateral column sleeve 41 with a thickness of 2mm to form a steel log composite node.

[0045] like Figures 2 and 3 The wooden column 1 includes a lower wooden column 11 and an upper wooden column 12, both with a diameter of 150mm. The lower wooden column 11 is reserved with four identical lower wooden column dovetail mortise grooves 111 and four identical lower wooden column S-shaped straight hook grooves 112. The upper wooden column 12 is also reserved with four identical upper wooden column dovetail mortise grooves 121 and four identical upper wooden column S-shaped straight hook grooves 122. The lengths of the longest and shortest horizontal sides of the lower and upper wooden column dovetail mortise grooves 111 and 121 are 50mm and 25mm respectively. The S-shaped straight hook groove 112 extends 55mm into the column and has a corner length of 15mm.

[0046] like Figure 4The wooden beam 2 with a cross-sectional size of 100×150mm is provided with a wooden beam dovetail tenon 211 and a wooden beam curved surface 213 with a radius of 75mm. At the same time, a wooden beam S-shaped reverse hook groove 212 with a width of 3mm, four identical wooden beam bolt holes 1 214 with a hole diameter of 12mm and one wooden beam bolt hole 215 with a hole diameter of 10mm are reserved.

[0047] like Figure 5 The steel plate 3 is composed of an S-shaped steel plate 31 and a horizontal steel plate 32, both 2 mm thick, connected by welds. The S-shaped steel plate 31 includes an S-shaped positive hook end 311 and an S-shaped negative hook end 312. The horizontal steel plate 32 includes four identical horizontal steel plate bolt holes 1 321 with a diameter of 12 mm, one horizontal steel plate bolt hole 2 322 with a diameter of 10 mm, and a horizontal steel plate curved surface 323 with a radius of 75 mm.

[0048] like Figure 6 The lateral sleeves 4 include a lateral column sleeve 41, a lateral beam wide sleeve 42, a lateral beam narrow sleeve 43, and a lateral beam intermediate sleeve 44, all with a thickness of 2 mm. The lateral column sleeve 41 is provided with five identical lateral column sleeve self-tapping screws 411 and five identical lateral column sleeve self-tapping screws 412, each with a diameter of 2 mm. The lateral beam wide sleeve 42 is provided with two identical lateral beam wide sleeve bolt holes 422 and one lateral beam wide sleeve bolt hole 421, each with a diameter of 12 mm. The lateral beam narrow sleeve 43 is provided with two identical lateral beam narrow sleeve bolt holes 431, each with a diameter of 10 mm.

[0049] like Figure 7 The 2mm-thick corrugated steel energy dissipation plate 5 comprises an L-shaped steel plate 51 and a bent plate 52. The bent plate 52 is connected to the L-shaped steel plate 51 at both ends and has several perpendicular surfaces. The L-shaped steel plate 51 has a reserved portion for a second corrugated steel energy dissipation plate bolt hole 511 with a diameter of 12mm, four identical first corrugated steel energy dissipation plate bolt holes 512 with a diameter of 10mm, five identical second corrugated steel energy dissipation plate self-tapping screw holes 513 with a diameter of 2mm, and four identical first corrugated steel energy dissipation plate self-tapping screw holes 514 with a diameter of 2mm.

[0050] like Figure 8 The construction method of the fully assembled steel-wood composite node of this embodiment includes the following steps:

[0051] Step 1: Align the S-shaped reverse hook end 312 on the steel plate 3 with the S-shaped reverse hook groove 212 on the wooden beam 2, and then slowly insert the wooden beam 2, and assemble the composite beam so that the horizontal steel plate curved surface 323 is flush with the wooden beam curved surface 213.

[0052] Step 2: Connect the dovetail tenon 211 on the wooden beam 2 with the dovetail groove 111 on the lower wooden column 11 by mortise and tenon connection, overlap the S-shaped straight hook end 311 on the composite beam with the lower wooden column S-shaped straight hook groove 112 of the lower wooden column 11, and insert the lower wooden column dovetail groove 111 and the lower wooden column S-shaped straight hook groove 112 into the half height of the wooden beam 2.

[0053] Step 3: Connect the upper wooden column dovetail groove of the upper wooden column 12 with the wooden beam dovetail tenon 211 by mortise and tenon joint, and overlap the upper wooden column S-shaped positive hook groove 122 with the S-shaped positive hook end, and insert them to the remaining half of the height of the wooden beam 2;

[0054] Step 4: Place four identical lateral cover plates 4 between the wooden beams 2 so that the composite beams and wooden columns 1 are surrounded by the lateral cover plates 4 .

[0055] Step 5: Place four identical corrugated steel energy absorbing plates 5 directly above the lateral sleeve plates 4 on the wooden beam 2. The corrugated steel energy absorbing plate bolt holes 512 of the corrugated steel energy absorbing plate 5 correspond one-to-one with the wooden beam bolt holes 214, the horizontal steel plate bolt holes 321 and the lateral beam wide sleeve bolt holes 422.

[0056] Step six: Use high-strength tension bolts to bolt the wooden beams 2, steel plates 3, lateral sleeves 4 and corrugated steel energy-absorbing plates 5 together, and use self-tapping screws to connect the upper wooden columns 12 and the lateral column sleeves 41.

[0057] A monotonic loading test was conducted on a traditional pure wood beam-column joint. The test device was based on existing technology. It was found that under the action of vertical load, the tenon of the wood beam slowly pulled out of the mortise.

[0058] Monotonic numerical simulations were performed on three groups of timber beam-column joints (pure timber beam-column joints, timber beam-column joints with embedded G-shaped steel plates, and timber beam-column joints with embedded S-shaped steel plates). The timber columns had a diameter of 150 mm and a length of 800 mm, the timber beams had a cross-sectional size of 100 × 150 mm and a length of 600 mm, and the beam end tenons were inserted into the mortise to a depth of 55 mm. The embedded steel plates were 2 mm thick, penetrated 75 mm into the column, and had a length of 25 mm at the corners. The failure states and rotation angle-tenon removal curves of the three timber beam-column joints were obtained as follows: Figures 9-12 As shown in the figure. When the angle is constant, the mortise and tenon pull-out requirement for a pure wood beam-column joint is the largest, followed by that for a wood beam-column joint with an embedded G-shaped steel plate, and the smallest for a wood beam-column joint with an embedded S-shaped steel plate 31. Compared to embedded S-shaped steel plates, G-shaped steel plates experience greater stress at the corners, with more severe stress concentration and greater deformation. This indicates that wood beam-column joints with embedded S-shaped steel plates 31 have better mechanical properties. Therefore, the fully prefabricated steel-wood composite joint of this embodiment incorporates S-shaped steel plates 31 to effectively prevent the wood beams from being pulled out.

[0059] The steel sleeve reinforced steel-wood composite beam-column joint with the additional corrugated steel energy dissipation plate 5 of this embodiment was subjected to monotonic test and finite element simulation. The test and simulation results are shown in FIG. Figures 13 and 14 The wooden beam 2 and the steel sleeve are bolted together using friction-type high-strength bolts 10.9 grade M10. Both the test and the simulation found that the friction-type high-strength bolts have certain deformation and there is obvious stress concentration on the tensile side, that is, the vertically arranged friction-type high-strength bolts effectively participate in the stress process of the steel-wood composite structure.

[0060] To prevent the steel sleeve from separating from the timber column during the test, self-tapping screws were used to reinforce the steel sleeve and timber column. At the final failure state of the component, the self-tapping screws were clearly pulled out, indicating that they played a certain role in strengthening the structure during the test loading process.

Claims

1. A fully assembled steel-wood composite node with an S-shaped steel plate, characterized by: The invention comprises a wooden column (1), a wooden beam (2), and a steel plate (3), wherein the wooden column (1) and the wooden beam (2) are connected by mortise and tenon joints; the steel plate (3) comprises an S-shaped steel plate (31) and a horizontal steel plate (32) perpendicular to each other, wherein the S-shaped steel plate (31) is embedded in the connection between the wooden column (1) and the wooden beam (2), and the horizontal steel plate (32) is arranged on the outer surface of the wooden beam (2); a lateral sleeve plate (4) and a corrugated steel energy-absorbing plate (5) are arranged at the connection between the wooden column (1) and the wooden beam (2), wherein the lateral sleeve plate (4) The S-shaped steel plate (31) is connected to the wooden column (1) by self-tapping screws, and the horizontal steel plate (32), the lateral sleeve plate (4), and the corrugated steel energy-absorbing plate (5) are connected to the wooden beam (2) by tension bolts; the S-shaped steel plate (31) includes an S-shaped positive hook end (311) and an S-shaped reverse hook end (312); the S-shaped positive hook end (311) is connected to the wooden column (1), and the S-shaped reverse hook end (312) is connected to the wooden beam (2); the S-shaped positive hook end (311) and the S-shaped positive and reverse ends (312) each include at least two right angles; The wooden column (1) includes a lower wooden column (11) and an upper wooden column (12), wherein the lower wooden column (11) is provided with a lower wooden column dovetail mortise (111) and a lower wooden column S-shaped positive hook groove (112), and the upper wooden column (12) is provided with an upper wooden column dovetail mortise (121) and an upper wooden column S-shaped positive hook groove (122), and the lower wooden column S-shaped positive hook groove (112) and the upper wooden column S-shaped positive hook groove (122) match the S-shaped positive hook end (311); The wooden beam (2) is provided with a wooden beam dovetail tenon (211) and a wooden beam S-shaped reverse hook groove (212) at one end close to the wooden column (1), the wooden beam S-shaped reverse hook groove (212) matches the S-shaped reverse hook end (312), and the lower wooden column dovetail mortise (111), the upper wooden column dovetail mortise (121) and the wooden beam dovetail tenon (211) are mortise-and-tenon connected; The lateral sleeves (4) include lateral column sleeves (41), lateral beam wide sleeves (42), lateral beam narrow sleeves (43), and lateral beam inter-sleeve sleeves (44), wherein the lateral column sleeves (41) and lateral beam inter-sleeve sleeves (44) are arranged on the outer surface of the wooden column (1), and the lateral beam wide sleeves (42) and lateral beam narrow sleeves (43) are arranged on the outer surface of the wooden beam (2); The corrugated steel energy-absorbing plate (5) is placed directly above the lateral sleeve plate (4) on the wooden beam (2).

2. A fully assembled steel-wood composite node with an S-shaped steel plate according to claim 1, characterized in that: The corrugated steel energy-absorbing plate (5) comprises an L-shaped steel plate (51) and a bent plate (52), both ends of the bent plate (52) are respectively connected to the L-shaped steel plate (51), and the bent plate (52) comprises a plurality of mutually perpendicular surfaces.

3. The fully assembled steel-wood composite node with S-shaped steel plate according to claim 1, characterized in that: The depths of the lower wooden column S-shaped positive hook groove (112) and the upper wooden column S-shaped positive hook groove (122) are the same.

4. The fully assembled steel-wood composite node with S-shaped steel plate according to claim 1, characterized in that: The depth of the wooden beam dovetail tenon (211) inserted into the lower wooden column dovetail mortise (111) is the same as the depth of the wooden beam dovetail tenon (121) inserted into the upper wooden column dovetail mortise (121).

5. The fully assembled steel-wood composite node with S-shaped steel plate according to claim 1, characterized in that: The wooden beam (2) further comprises a wooden beam curved surface (213) that fits the outer surface of the wooden column (1).

6. The fully assembled steel-wood composite node with S-shaped steel plate according to claim 1, characterized in that: Bolt holes are provided on the lateral beam wide sleeve (42) and the lateral beam narrow sleeve (43), and screw holes are provided on the lateral column sleeve (41).

7. The construction method of a fully assembled steel-wood composite node with S-shaped steel plates according to claim 1, characterized in that: The following steps are involved: Step 1: insert the S-shaped reverse hook end (312) on the steel plate (3) into the S-shaped reverse hook groove (212) on the wooden beam (2), and fit the steel plate (3) and the square wooden beam (2) together to form a composite beam; Step 2: Connect the wooden beam (2) and the lower wooden column (11) with mortise and tenon joints, overlap the S-shaped positive hook end (311) on the composite beam and the lower wooden column S-shaped positive hook groove (112) of the lower wooden column (11), and insert the lower wooden column dovetail mortise groove (111) and the lower wooden column S-shaped positive hook groove (112) into the half height of the wooden beam (2); Step 3: Connect the upper wooden column (12) to the wooden beam (2) with mortise and tenon joints, and plug the upper wooden column (12) into the S-shaped positive hook end (311), and insert them to the remaining half of the height of the wooden beam (2); Step 4: Place the lateral cover plate (4) between the wooden beams (2) so that the composite beam and the wooden column (1) are surrounded by the lateral cover plate (4); Step 5: Place the corrugated steel energy-absorbing plate (5) directly above the lateral sleeve plate (4) on the wooden beam (2), with the bolt holes on the corrugated steel energy-absorbing plate (5), the wooden beam (2) and the lateral sleeve plate (4) corresponding to each other. Step six, use tension bolts to bolt the wooden beam (2), steel plate (3), lateral sleeve (4) and corrugated steel energy-absorbing plate (5), and use self-tapping screws to fix the upper wooden column (12) and the lateral sleeve (4) together.

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