Steel bar truss for reinforced concrete and construction method thereof

Abstract

The application belongs to the technical field of building structures, and particularly relates to a steel bar truss for reinforced concrete and a construction method thereof, which comprises one upper chord steel bar and two lower chord steel bars, the side walls of the two lower chord steel bars are both welded with web steel bars, the cross section of the web steel bar is a V-shaped structure, and the upper ends of the two web steel bars are both welded with the upper chord steel bar. The split type aluminum sheet plate can be transported to the construction site and spliced with the steel bar truss to complete the assembly, and the assembly efficiency is high, the supporting strength is large, the split type aluminum sheet plate is shorter than the whole aluminum sheet plate in size, the transportation difficulty and cost are reduced, and when the two split type aluminum sheet plates are welded, the welding seams can be in close contact, which helps to reduce the defects such as pores and slag in the welding seam, so that the welding seam is more dense and uniform, and the quality and appearance of the welding seam are improved.

Description

Technical Field

[0001] This invention belongs to the field of building structure technology, and in particular relates to a steel truss for reinforced concrete and its construction method. Background Technology

[0002] In various types of buildings, such as high-rise buildings, industrial plants, and commercial buildings, steel truss floor decks are often used as floor slab structures. These floor decks combine steel trusses with profiled steel sheets, utilizing both the formwork function of the profiled steel sheets and the structural performance of the steel trusses. This effectively improves the construction speed and quality of the floor slabs. After the steel trusses are prefabricated in the factory, they are transported to the construction site for installation, which can greatly reduce the workload of on-site steel reinforcement binding and formwork erection, improve construction efficiency, and shorten the construction period. For example, the steel truss proposed in patent publication number CN206256587U.

[0003] Currently, in practical applications, steel trusses need to be used in conjunction with aluminum sheets. In order to fit the steel trusses, the length of the traditional aluminum sheets must be consistent with that of the steel trusses. This results in some aluminum sheets being several meters long. As a result, during transportation, they not only occupy a lot of space but also face many inconveniences, greatly increasing the difficulty and cost of transportation.

[0004] To address these issues, a steel truss for reinforced concrete and its construction method are proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a steel truss for reinforced concrete and its construction method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a steel truss for reinforced concrete, comprising one top chord steel bar and two bottom chord steel bars, wherein the side walls of the two bottom chord steel bars are welded with web steel bars, the cross-section of the web steel bars is a V-shaped structure, and the upper ends of the two web steel bars are welded to the top chord steel bar, further comprising:

[0007] Multiple split aluminum sheets, the sidewalls of which have multiple cuts that match the web reinforcement bars, and two of the split aluminum sheets on the same side pass through the web reinforcement bars and are welded together;

[0008] Multiple positioning components are disposed at the interfaces of the multiple split aluminum sheets to align the interfaces of the split aluminum sheets during the welding process.

[0009] Multiple tensioning components are evenly distributed on the sidewalls of the multiple split aluminum sheets, so that the two split aluminum sheets are in close contact during welding.

[0010] Preferably, the positioning component includes a positioning frame, which is a U-shaped structure. A threaded cylinder is fixedly connected to the upper side wall of the positioning frame. The threaded cylinder communicates with the upper side wall of the positioning frame. A threaded rod is threadedly connected to the inner side of the threaded cylinder. A rotating plate is fixedly connected to the upper end of the threaded rod. The lower end of the threaded rod extends out of the threaded cylinder and is rotatably connected to a pressure plate. The interface between the two split aluminum plates is located between the pressure plate and the lower inner wall of the positioning frame.

[0011] Preferably, a rubber pad is fixedly connected to the lower side wall of the pressure plate, and the lower side wall of the rubber pad is in contact with the upper inner wall of the two split aluminum plates.

[0012] Preferably, the tensioning assembly includes a tensioning cylinder and a rope cylinder. The rope cylinder is rotatably connected to the inner wall of the tensioning cylinder. A cable is wound around the outer side of the rope cylinder. The right end of the cable is fixedly connected to the side wall of the rope cylinder. A rope hole is provided on the left side wall of the tensioning cylinder. The left end of the cable passes through the rope hole and is fixedly connected to a tensioning block. Locking pins are fixedly connected to both the tensioning block and the lower side wall of the rope cylinder. The side wall of the split aluminum plate has multiple locking holes that match the locking pins. The upper side wall of the tensioning cylinder is fixedly connected to... A limiting cover is provided. The upper side wall of the limiting cover has an insertion hole, and a rotating rod is inserted into the insertion hole. The lower end of the rotating rod is located inside the limiting cover and is fixedly connected to a circular plate. The upper side wall of the circular plate is fixedly connected to two positioning pins. The inner wall of the limiting cover has multiple positioning grooves that match the positioning pins. The side wall of the circular plate has two sliding holes, and sliding pins are inserted into the sliding holes. The lower ends of the two sliding pins are fixedly connected to the same fixing plate. The fixing plate is connected to a rope drum through a tension assembly.

[0013] Preferably, the tensioning assembly includes a tensioning cylinder, with the upper shaft end of the rope cylinder extending out of the tensioning cylinder and fixedly connected to the lower side wall of the tensioning cylinder. A cylinder is fixedly connected to the lower side wall of the fixing plate, and the lower end of the cylinder is rotatably connected to the lower inner wall of the tensioning cylinder. Push plates are fixedly connected to the rod walls on both the left and right sides of the cylinder. Push plates are fixedly connected to the inner walls on both the front and rear sides of the tensioning cylinder. A common spring is fixedly connected between the push plates and push plates on the same side. A conductive block is fixedly connected to the right side wall of the push plate on the right side. A miniature power supply is fixedly connected to the lower inner wall of the tensioning cylinder. The miniature power supply and the conductive block are electrically connected. An arc-shaped conductive plate is embedded in the inner wall of the tensioning cylinder. An indicator light is fixedly connected to the right outer wall of the tensioning cylinder. The arc-shaped conductive plate and the indicator light are electrically connected.

[0014] Preferably, a friction disc is fixedly connected to the upper end of the rotating rod, and the outer wall of the friction disc is provided with friction texture.

[0015] Preferably, the cable is made of stainless steel and has a diameter of 0.5 mm.

[0016] A construction method for a steel truss used in reinforced concrete includes the following steps:

[0017] S1. Using welding equipment, weld one top chord steel bar, two bottom chord steel bars and two web steel bars together, and during the welding process, make the protrusions and depressions of the two web steel bars on the same straight line.

[0018] S2. Use cutting equipment to cut the split aluminum sheet so that the cut of the split aluminum sheet corresponds to the weld of the web reinforcement and the top chord reinforcement.

[0019] S3. Insert two cut split aluminum sheets between the welded top chord steel bars, two bottom chord steel bars and two web steel bars, and align the cut of the split aluminum sheets with the welded joints of the web steel bars and the top chord steel bars.

[0020] S4. Use multiple positioning components to fix the two split aluminum sheets, and then insert multiple tensioning components into the locking holes on the surface of the two split aluminum sheets to fix the position of the two split aluminum sheets.

[0021] S5. Use welding equipment to weld two separate aluminum sheets. During the welding process, remove the positioning and tensioning components at the welding point. After the two separate aluminum sheets are welded, repeat the above steps to weld two more separate aluminum sheets and weld these two separate aluminum sheets together with the previous two separate aluminum sheets.

[0022] Compared with existing technologies, the advantages of a steel truss for reinforced concrete and its construction method are as follows:

[0023] 1. By setting up upper chord reinforcement, lower chord reinforcement, web reinforcement, split aluminum sheet, and cuts, the split aluminum sheet can be transported to the construction site and spliced ​​with the steel truss during the assembly of the steel truss. The assembly is efficient and has strong support. Moreover, the split aluminum sheet is shorter than the whole aluminum sheet, which reduces the difficulty and cost of transportation.

[0024] 2. By using the positioning components, the contact points of the two separate aluminum sheets can be aligned during welding, thereby improving the welding flatness of the two separate aluminum sheets and ensuring the strength of the separate aluminum sheets in subsequent use.

[0025] 3. The tensioning components ensure tight contact between the weld seams when welding two separate aluminum sheets, which helps reduce defects such as porosity and slag inclusions in the weld seam, resulting in a denser and more uniform weld seam and improving its quality and appearance. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a steel truss for reinforced concrete and its construction method provided by the present invention;

[0027] Figure 2 This is a schematic diagram of the fixing method of two split aluminum plates in a steel truss for reinforced concrete and its construction method provided by the present invention.

[0028] Figure 3 This is a structural schematic diagram of the positioning component in a steel truss for reinforced concrete and its construction method provided by the present invention;

[0029] Figure 4 This is a schematic diagram showing the positional relationship between the tensioning cylinder and the tensioning block in a steel truss for reinforced concrete and its construction method provided by the present invention.

[0030] Figure 5 This is a structural schematic diagram of the tensioning component in a steel truss for reinforced concrete and its construction method provided by the present invention;

[0031] Figure 6 This is a structural schematic diagram of the tension component in a steel truss for reinforced concrete and its construction method provided by the present invention.

[0032] In the diagram: 1. Upper chord reinforcement, 2. Lower chord reinforcement, 3. Web reinforcement, 4. Split aluminum sheet, 5. Cutout, 6. Positioning assembly, 61. Positioning frame, 62. Threaded cylinder, 7. Threaded rod, 8. Rotating plate, 9. Pressure plate, 10. Rubber pad, 11. Tensioning assembly, 111. Tensioning cylinder, 112. Rope cylinder, 12. Cable, 13. Tensioning block, 14. Locking pin, 15. Locking hole, 16. Limiting cover, 17. Rotating rod, 18. Round plate, 19. Positioning pin, 20. Sliding pin, 21. Fixing plate, 22. Tensioning assembly, 221. Tensioning cylinder, 222. Cylindrical column, 23. Extrusion plate, 24. Pushing plate, 25. Conductive block, 26. Miniature power supply, 27. Arc-shaped conductive plate, 28. Indicator light, 29. Friction disc. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1-6 As shown, a steel truss for reinforced concrete includes one top chord steel bar 1 and two bottom chord steel bars 2. The side walls of both bottom chord steel bars 2 are welded with web steel bars 3. The web steel bars 3 have a V-shaped cross-section. The upper ends of both web steel bars 3 are welded to the top chord steel bar 1. The truss also includes:

[0035] Multiple split aluminum sheet plates 4, the side walls of the split aluminum sheet plates 4 are provided with multiple cuts 5 that match the web reinforcement bars 3, two split aluminum sheet plates 4 located on the same side pass through the web reinforcement bars 3 and are welded together;

[0036] Multiple positioning components 6 are installed at the interfaces of multiple split aluminum plates 4 to align the interfaces of the split aluminum plates 4 during welding. The positioning components 6 include a positioning frame 61, which has a U-shaped structure. A threaded cylinder 62 is fixedly connected to the upper side wall of the positioning frame 61. The threaded cylinder 62 is connected to the upper side wall of the positioning frame 61. A threaded rod 7 is threadedly connected to the threaded cylinder 62. A rotating plate 8 is fixedly connected to the upper end of the threaded rod 7. The lower end of the threaded rod 7 extends out of the threaded cylinder 62 and is rotatably connected to a pressure plate 9. The interface of the two split aluminum plates 4 is located between the pressure plate 9 and the lower inner wall of the positioning frame 61. When welding the two split aluminum plates 4, the contact points of the two split aluminum plates 4 can be aligned, thereby improving the welding flatness of the two split aluminum plates 4 and ensuring the strength of the split aluminum plates 4 in subsequent use.

[0037] Multiple tensioning components 11 are evenly distributed on the sidewalls of multiple split aluminum plates 4, ensuring tight contact between two split aluminum plates 4 during welding. Each tensioning component 11 includes a tensioning cylinder 111 and a rope drum 112. The rope drum 112 is rotatably connected to the inner wall of the tensioning cylinder 111. A cable 12 is wound around the outside of the rope drum 112. The cable 12 is made of stainless steel and has a diameter of 0.5 mm to ensure its strength. The right end of the cable 12 is fixedly connected to the sidewall of the rope drum 112. A rope hole is provided on the left sidewall of the tensioning cylinder 111. The left end of the cable 12 passes through the rope hole and is fixedly connected to a tensioning block 13. Locking pins 14 are fixedly connected to both the tensioning block 13 and the lower sidewall of the rope drum 112. Multiple locking holes 15 matching the locking pins 14 are provided on the sidewalls of the split aluminum plates 4. A limit cover 16 is fixedly connected to the upper sidewall of the tensioning cylinder 111. The upper side wall of the positioning cover 16 has an insertion hole, and a rotating rod 17 is inserted into the insertion hole. The upper end of the rotating rod 17 is fixedly connected to a friction disc 29. The outer wall of the friction disc 29 is provided with friction texture. The lower end of the rotating rod 17 is located inside the positioning cover 16 and is fixedly connected to a circular plate 18. The upper side wall of the circular plate 18 is fixedly connected to two positioning pins 19. The inner wall of the positioning cover 16 has multiple positioning grooves that match the positioning pins 19. The side wall of the circular plate 18 has two sliding holes, and sliding pins 20 are inserted into the sliding holes. The lower ends of the two sliding pins 20 are fixedly connected to the same fixing plate 21. The fixing plate 21 is connected to the rope drum 112 through the tension component 22. When welding the two split aluminum plates 4, the weld can be made to make close contact between the welds, which helps to reduce defects such as porosity and slag inclusions in the weld, thereby making the weld denser and more uniform, and improving the quality and appearance of the weld.

[0038] A rubber pad 10 is fixedly connected to the lower side wall of the pressure plate 9. The lower side wall of the rubber pad 10 contacts the upper inner wall of the two split aluminum plates 4, which can improve the friction between the pressure plate 9 and the split aluminum plates 4.

[0039] The tension assembly 22 includes a tension cylinder 221. The upper shaft end of the rope cylinder 112 extends out of the tension cylinder 111 and is fixedly connected to the lower side wall of the tension cylinder 221. A cylinder 222 is fixedly connected to the lower side wall of the fixing plate 21. The lower end of the cylinder 222 is rotatably connected to the lower inner wall of the tension cylinder 221. Push plates 23 are fixedly connected to the rod walls on both the left and right sides of the cylinder 222. Push plates 24 are fixedly connected to the inner walls on both the front and rear sides of the tension cylinder 221. The push plates 23 and push plates are located on the same side. A single spring is fixedly connected between the two parts 24. A conductive block 25 is fixedly connected to the right side wall of the right extrusion plate 23. A micro power supply 26 is fixedly connected to the lower inner wall of the tensioning cylinder 111. The micro power supply 26 and the conductive block 25 are electrically connected. An arc-shaped conductive plate 27 is embedded in the inner wall of the tensioning cylinder 221. An indicator light 28 is fixedly connected to the right outer wall of the tensioning cylinder 111. The arc-shaped conductive plate 27 and the indicator light 28 are electrically connected, which can detect the contact force between the two split aluminum plates 4.

[0040] The operating principle of this invention is explained as follows: Using welding equipment, one upper chord steel bar 1, two lower chord steel bars 2, and two web steel bars 3 are welded together. During the welding process, the protrusions and recesses of the two web steel bars 3 are aligned on the same straight line. A split aluminum sheet 4 is cut using a cutting device, so that the cut 5 of the split aluminum sheet 4 corresponds to the weld joint of the web steel bars 3 and the upper chord steel bar 1. Two cut split aluminum sheets 4 are inserted between the welded upper chord steel bar 1, two lower chord steel bars 2, and two web steel bars 3, ensuring that the cut 5 of the split aluminum sheet 4... Align the welded joints of the opening 5 with the web reinforcement 3 and the top chord reinforcement 1. Then, the operator takes the appropriate positioning component 6, aligns the two split aluminum plates 4, and places the positioning frame 61 on the outside of the two split aluminum plates 4. The operator then rotates the rotating plate 8, which drives the threaded rod 7 to rotate. Through the threaded engagement between the threaded rod 7 and the threaded cylinder 62, the threaded rod 7 will drive the pressure plate 9 to move downward (the threaded rod 7 and the pressure plate 9 are rotatably connected). The pressure plate 9 will squeeze the two split aluminum plates 4. When the operator feels resistance in the rotating plate 8, the rotation can be stopped.

[0041] Next, the operator takes multiple tensioning components 11 and inserts the locking pins 14 on the lower side of the tensioning block 13 and tensioning cylinder 111 into the locking holes 15 on the surfaces of the two split aluminum plates 4. Then, the operator presses down on the friction disc 29, causing the friction disc 29 to move downwards along with the circular plate 18 and the positioning pin 19, separating the positioning pin 19 from the positioning groove on the inner wall of the limit cover 16. Next, the operator rotates the friction disc 29, which drives the circular plate 18 to rotate via the rotating rod 17. The circular plate 18 drives the sliding pin 20, the fixed plate 21, and the cylinder 222 to rotate. The cylinder 222 drives the pushing plates 23 on both sides to rotate, using the pushing plates 23 to compress the spring, and using the spring's elasticity to compress and push the spring. Plate 24 and push plate 24 will drive the tension cylinder 221 and rope drum 112 to rotate. The rope drum 112 tightens the cable 12, which in turn pulls the tension block 13. The tension block 13, through the cooperation of the locking pin 14 and the locking hole 15, brings the two separate aluminum plates 4 closer together (the locking pin 14 and the locking hole 15 are in frictional engagement, and the length of the locking pin 14 is greater than the length of the locking hole 15, which can prevent the locking pin 14 from disengaging from the locking hole 15 when the tension block 13 is pulled horizontally). When the two separate aluminum plates 4 are in close contact, they will stop moving. However, the cylinder 222 will still drive the extrusion plate 23 to rotate under the operator's rotation. The extrusion plate 23 will drive the conductive block. As the conductive block 25 rotates, it continues to rotate and comes into contact with the arc-shaped conductive plate 27. The conductive block 25 is electrically connected to the micro power supply 26, and the arc-shaped conductive plate 27 is electrically connected to the indicator light 28. When they come into contact, the current inside the micro power supply 26 is supplied to the indicator light 28, causing the indicator light 28 to light up. After the operator sees the indicator light 28 light up, they need to pull the friction plate 29 upwards. During the pulling process, the friction plate 29 also needs to be rotated back and forth, so that the friction plate 29 drives the circular plate 18 and the positioning pin 19 to rotate through the rotating rod 17. This allows the positioning pin 19 to be accurately inserted into the positioning groove inside the limiting cover 16, thus keeping the tensioning assembly 11 in a locked state. Subsequent reverse operations can then be performed to... The tensioning assembly 11 is removed from the split aluminum sheet 4. After all the tensioning assemblies 11 are locked, the operator can use the welding equipment to weld the weld. When the welding equipment is close to the tensioning assembly 11 or the positioning assembly 6, the tensioning assembly 11 or the positioning assembly 6 at that location needs to be removed. The tensioning assembly 11 or the positioning assembly 6 at other locations can still make the split aluminum sheet 4 in close contact, thereby improving the welding flatness of the two split aluminum sheets 4, ensuring the strength of the split aluminum sheet 4 in subsequent use, and making the weld seam in close contact. This helps to reduce defects such as porosity and slag inclusion in the weld seam, thereby making the weld seam denser and more uniform, and improving the quality and appearance of the weld seam.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steel truss for reinforced concrete, comprising one top chord steel bar (1) and two bottom chord steel bars (2), wherein the side walls of both bottom chord steel bars (2) are welded with web steel bars (3), the cross-section of the web steel bars (3) is V-shaped, and the upper ends of both web steel bars (3) are welded to the top chord steel bar (1), characterized in that, Also includes: Multiple split aluminum sheet plates (4), the side walls of the split aluminum sheet plates (4) are provided with multiple cuts (5) that match the web reinforcement bars (3), two of the split aluminum sheet plates (4) located on the same side pass through the web reinforcement bars (3) and are welded together; Multiple positioning components (6) are set at the interfaces of the multiple split aluminum sheets (4) so ​​that the interfaces of the split aluminum sheets (4) are aligned during the welding process; Multiple tensioning components (11) are evenly distributed on the sidewalls of the multiple split aluminum sheets (4), so that the two split aluminum sheets (4) are in close contact during welding. The positioning component (6) includes a positioning frame (61), which is a U-shaped structure. A threaded cylinder (62) is fixedly connected to the upper sidewall of the positioning frame (61). The threaded cylinder (62) is connected to the upper sidewall of the positioning frame (61). A threaded rod (7) is threadedly connected to the threaded cylinder (62). A rotating plate (8) is fixedly connected to the upper end of the threaded rod (7). The lower end of the threaded rod (7) extends out of the threaded cylinder (62) and is rotatably connected to the pressure plate (9). The interface of the two split aluminum plates (4) is located between the pressure plate (9) and the lower inner wall of the positioning frame (61). The tensioning assembly (11) includes a tensioning cylinder (111) and a rope cylinder (112). The rope cylinder (112) is rotatably connected to the inner wall of the tensioning cylinder (111). A cable (12) is wound around the outside of the rope cylinder (112). The right end of the cable (12) is fixedly connected to the side wall of the rope cylinder (112). The tensioning cylinder (111) The left side wall of the cable (111) has a rope hole, the left end of the cable (12) passes through the rope hole and is fixedly connected to a tensioning block (13). The tensioning block (13) and the lower side wall of the cable cylinder (112) are both fixedly connected to locking pins (14). The side wall of the split aluminum plate (4) has multiple locking holes (15) that match the locking pins (14). The upper side wall of the tensioning cylinder (111) is fixedly connected to a limit cover (16). The upper side wall of the limit cover (16) has an insertion hole, and a rotating rod (17) is inserted into the insertion hole. The lower end is located inside the limiting cover (16) and is fixedly connected to a circular plate (18). Two positioning pins (19) are fixedly connected to the upper side wall of the circular plate (18). The inner wall of the limiting cover (16) is provided with multiple positioning grooves that match the positioning pins (19). Two sliding holes are provided on the side wall of the circular plate (18), and sliding pins (20) are inserted into the sliding holes. The lower ends of the two sliding pins (20) are fixedly connected to the same fixing plate (21). The fixing plate (21) is connected to the rope drum (112) through the tension assembly (22).

2. A steel truss for reinforced concrete according to claim 1, characterized in that, A rubber pad (10) is fixedly connected to the lower side wall of the pressure plate (9), and the lower side wall of the rubber pad (10) is in contact with the upper inner wall of the two split aluminum plates (4).

3. A steel truss for reinforced concrete according to claim 1, characterized in that, The tension assembly (22) includes a tension cylinder (221). The upper shaft end of the rope cylinder (112) extends out of the tension cylinder (111) and is fixedly connected to the lower side wall of the tension cylinder (221). A cylinder (222) is fixedly connected to the lower side wall of the fixing plate (21). The lower end of the cylinder (222) is rotatably connected to the lower inner wall of the tension cylinder (221). Push plates (23) are fixedly connected to the rod walls on both the left and right sides of the cylinder (222). Push plates (24) are fixedly connected to the inner walls on both the front and rear sides of the tension cylinder (221). The same spring is fixedly connected between the extrusion plate (23) and the push plate (24). A conductive block (25) is fixedly connected to the right side wall of the extrusion plate (23) on the right side. A miniature power supply (26) is fixedly connected to the lower inner wall of the tensioning cylinder (111). The miniature power supply (26) and the conductive block (25) are electrically connected. An arc-shaped conductive plate (27) is embedded in the inner wall of the tensioning cylinder (221). An indicator light (28) is fixedly connected to the right outer wall of the tensioning cylinder (111). The arc-shaped conductive plate (27) and the indicator light (28) are electrically connected.

4. A steel truss for reinforced concrete according to claim 1, characterized in that, The upper end of the rotating rod (17) is fixedly connected to a friction disc (29), and the outer wall of the friction disc (29) is provided with friction patterns.

5. A steel truss for reinforced concrete according to claim 1, characterized in that, The cable (12) is made of stainless steel and has a diameter of 0.5 mm.

6. A construction method for a steel truss for reinforced concrete, comprising the steel truss for reinforced concrete as described in claim 1, characterized in that, Includes the following steps: S1. Using welding equipment, weld one upper chord steel bar (1), two lower chord steel bars (2) and two web steel bars (3) together, and during the welding process, make the protrusions and depressions of the two web steel bars (3) on the same straight line; S2. Use a cutting device to cut the split aluminum sheet (4) so ​​that the cut (5) of the split aluminum sheet (4) corresponds to the weld of the web reinforcement (3) and the top chord reinforcement (1); S3. Insert two cut split aluminum plates (4) between the welded upper chord steel bar (1), two lower chord steel bars (2) and two web steel bars (3), and align the cut (5) of the split aluminum plate (4) with the welded joint of the web steel bar (3) and the upper chord steel bar (1). S4. Use multiple positioning components (6) to fix the two split aluminum plates (4), and then insert multiple tensioning components (11) into the locking holes (15) on the surface of the two split aluminum plates (4) to fix the position of the two split aluminum plates (4). S5. Weld the two split aluminum plates (4) using welding equipment. During the welding process, remove the positioning component (6) and the tensioning component (11) at the welding point. After the two split aluminum plates (4) are welded, repeat the above steps to weld the other two split aluminum plates (4) together. Weld the two split aluminum plates (4) together with the previous two split aluminum plates (4).

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