House building steel structure beam column joint temporary supporting structure

Abstract

The invention relates to a house building steel structure beam-column joint temporary supporting structure which comprises a base, a sliding way is arranged on the base, a plurality of supporting assemblies are arranged in the sliding way in a sliding mode, each supporting assembly comprises a chassis placed on the base, a guiding piece is rotationally arranged on the chassis, and the guiding piece is arranged in the sliding way in a sliding mode; the chassis is provided with a main supporting column and an auxiliary supporting column, the main supporting column is provided with a connecting assembly, the connecting assembly is used for sequentially connecting all the supporting assemblies, and all the supporting assemblies synchronously rotate along a sliding way under the traction of the connecting assembly. The device has the advantages that the stress uniformity and stability of the beam-column joint can be guaranteed, overall fine adjustment can be conveniently conducted according to the dynamic change of the stress of the joint, and therefore the adjusting efficiency is improved, and the effect of synchronism in the adjusting process is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of steel structure support devices, and in particular to a temporary support structure for beam-column joints in steel structures for building construction. Background Technology

[0002] In the construction of modern steel structures for buildings, temporary supports for beam-column joints are a crucial element in ensuring structural installation accuracy and construction safety. Traditional temporary support structures often employ independent strut designs, where each strut is individually fixed and adjustable.

[0003] However, this independent structure has significant limitations. When the struts apply supporting forces to the steel beams and columns, it is difficult to ensure the synchronization and uniformity of the force distribution among the individual struts. This can easily lead to localized stress concentrations or micro-deformations in the steel beams and columns during the temporary fixing stage, affecting the subsequent welding quality and the overall structural stability. Furthermore, construction workers need to spend a considerable amount of time leveling and positioning each strut individually, resulting in low adjustment efficiency. Secondly, the weak coordination between the independent struts makes it difficult to make overall fine-tuning based on dynamic changes in the stress at the nodes, easily causing uneven stress distribution in the support system and affecting the installation quality of the steel structure. Summary of the Invention

[0004] This application provides a temporary support structure for beam-column joints in steel structures for building construction. It can ensure the uniformity and stability of the stress on the beam-column joints, facilitate overall fine-tuning according to the dynamic changes in the stress on the joints, thereby improving the adjustment efficiency and ensuring the synchronicity of the adjustment process.

[0005] This application provides a temporary support structure for beam-column joints in a steel structure building, employing the following technical solution: A temporary support structure for beam-column joints in a building steel structure includes a base with a slide rail. Multiple support components are slidably arranged within the slide rail. Each support component includes a chassis placed on the base, and a guide member rotatably mounted on the chassis and slidably positioned within the slide rail. A main support column and a secondary support column are mounted on the chassis. A connecting component is mounted on the main support column to sequentially connect the various support components. Each support component rotates synchronously along the slide rail under the traction of the connecting component.

[0006] Preferably, the secondary support columns are symmetrically arranged on both sides of the main support column. A gear is rotatably arranged in the chassis between the two secondary support columns. A rack is also slidably arranged in the chassis on both sides of the gear. The rack and the gear mesh with each other. The secondary support columns are respectively arranged on their respective racks. Under the linkage of the gear and the rack, the two secondary support columns move synchronously towards each other or away from each other.

[0007] Preferably, a clamping plate is rotatably provided on the top of the secondary support column, a hanging ring is provided on the clamping plate, and an adjusting rod is suspended on the hanging ring; a limit rod is threadedly connected to the chassis, and the limit rod is used to limit the secondary support column within the chassis.

[0008] Preferably, the connecting assembly includes a clamp detachably mounted on the main support column and a connecting frame sleeved on the outside of the main support column; the connecting frame is mounted on the clamp, and the connecting frame extends along the path of the slide rail towards the adjacent main support column respectively; the connecting frame has an adjustment hole through it, and the connecting frame is provided with a plug-in post for insertion into the adjustment hole; the plug-in post is provided with a fastener for tightening the plug-in post onto the adjacent connecting frame.

[0009] Preferably, a central support column is provided on the chassis, and the support components are arranged circumferentially around the central support column; a connecting plate is sleeved on the central support column, and multiple bearing frames extending to the bottom of the connecting frame are provided on the connecting plate. The bearing frames are arranged circumferentially around the outside of the connecting plate, and the connecting frames are placed on the bearing frames.

[0010] Preferably, a lifting sleeve located below the connecting plate is threaded onto the central support column, and the lifting sleeve is used to push the connecting plate up and down along the length of the central support column.

[0011] Preferably, a top cover is detachably fitted onto the top of the central support column, and the top cover is rotatably mounted on the top of the central support column; the top cover is provided with a guide rod whose length extends along the lifting direction of the connecting plate, and the connecting plate slides along the length of the guide rod on the guide rod.

[0012] Preferably, the base includes a plurality of sequentially spliced ​​unit plates, and a fastener for limiting and fixing each of the sequentially spliced ​​unit plates; a splicing plate is provided at the splicing point of the unit plates, and a through hole is provided on the splicing plate for the fastener to pass through, and the shape of the fastener is adapted to the shape of the through hole; the central support column is detachably installed on the fastener.

[0013] Preferably, the splicing plate is also provided with a plurality of insertion holes, which are arranged sequentially at intervals along the extension direction of the support frame.

[0014] Preferably, the support assembly further includes a crossbeam movably fitted between the main support column and the two side auxiliary support columns, a support frame is provided on the connecting frame, the crossbeam is provided on the support frame, the main support column and the auxiliary support columns are both telescopic structures, and the telescopic ends of the main support column and the auxiliary support columns are mounted on the top of the crossbeam.

[0015] In summary, this application includes at least one of the following beneficial technical effects: By setting the base as the common base for each support component, each support component can revolve around the central axis of the base, thereby ensuring that the steel structure beams and columns are subjected to more balanced forces in the circumferential direction, effectively avoiding the phenomenon of local stress concentration, significantly improving the uniformity of force, ensuring the uniformity and stability of the beam-column joints, and facilitating overall fine-tuning according to the dynamic changes in the joint forces. With the linkage of gears and racks, the two auxiliary support columns move synchronously toward each other or away from each other. When it is necessary to adjust the distance between the two auxiliary support columns, simply push one auxiliary support column. Through the linkage of racks and gears, the other auxiliary support column can be driven to move synchronously. This greatly simplifies the operation process, realizes synchronous adjustment of multi-point support, improves adjustment efficiency, and ensures the consistency of the support position of the two auxiliary support columns. The circumferentially arranged support frames can be used to temporarily place wire rods, thus realizing the integrated function of support and material storage. This design not only solves the problem of temporary storage of wire rods on the construction site and avoids the safety hazards caused by random stacking of materials, but also makes full use of the space resources of the support structure, improving the orderliness and efficiency of construction organization; It can synchronously adjust the height of the inner tubes of each group of main support columns and secondary support columns, ensuring the consistency of the height of each group of main support columns and secondary support columns, and also greatly improving the height adjustment efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a partial structural diagram highlighting the base and the central support column; Figure 3 yes Figure 2 A schematic diagram of a partial structural explosion; Figure 4 This is a schematic diagram highlighting a portion of the supporting components; Figure 5 yes Figure 4 A schematic diagram of the local structure from another perspective; Figure 6 yes Figure 5 Exploded view of a portion of the structure behind the concealed main support column; Figure 7 It is Figure 1 A schematic diagram of the overall structure after the chassis orientation is adjusted by rotation.

[0017] Explanation of reference numerals in the attached drawings: 1. Base; 10. Slide rail; 11. Unit plate; 12. Fixing component; 13. Splicing plate; 14. Through hole; 15. Insertion hole; 2. Support assembly; 20. Chassis; 21. Guide component; 22. Main support column; 23. Secondary support column; 24. Clamping plate; 25. Hanging ring; 26. Adjusting rod; 27. Limiting rod; 28. Cross frame; 3. Connecting assembly; 30. Clamp; 31. Connecting frame; 32. Adjusting hole; 33. Insertion column; 34. Fastener; 35. Support frame; 4. Gear; 40. Rack; 5. Central support column; 50. Connecting plate; 51. Bearing frame; 6. Lifting sleeve; 7. Top cover; 70. Guide rod. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the accompanying drawings.

[0019] This application discloses a temporary support structure for beam-column joints in a building steel structure.

[0020] Reference Figure 1 , Figure 2 as well as Figure 3 The temporary support structure for the beam-column joints of the building steel structure includes a disc-shaped base 1. The base 1 includes four fan-shaped unit plates 11 that are sequentially spliced ​​and fixed, and fasteners 12 for limiting and fixing each sequentially spliced ​​unit plate 11. A splicing plate 13 is fixedly installed at the splicing point of each unit plate 11, and the splicing plate 13 is coaxial with the central axis of the base 1. The splicing plate 13 has through holes 14 for the fasteners 12 to pass through; the through holes 14 are non-circular. The shape of the fasteners 12 matches the shape of the through holes 14. The fasteners 12 are sequentially inserted into the stacked splicing plates 13. Through the interlocking of the fasteners 12 and the through holes 14, the unit plates 11 can be detachably connected. This facilitates the transportation of the base 1 and reduces the space occupied during transportation.

[0021] like Figure 7 As shown, by rotating the chassis 20 along its length to extend radially along the base 1, temporary support for beam-column joints of different structures can be achieved, further expanding the scope of application. This application only lists two typical structures. For those skilled in the art, any shape transformations, positional adjustments, or dimensional changes to the above structures based on actual design needs, or the adoption of similar shapes with essentially the same function and effect as the above structures, without departing from the principles of this invention, are all equivalent features of this application and fall within the protection scope of this application.

[0022] like Figure 3 , Figure 4As shown, a circular slide rail 10 is coaxially arranged on the upper surface of the base 1. Four support components 2 are slidably arranged within the slide rail 10, and the support components 2 can rotate circumferentially around the central axis of the base 1 along the slide rail 10. The support component 2 includes a base plate 20 placed on the upper surface of the base 1. A guide member 21 is rotatably arranged at the bottom of the base plate 20. The guide member 21 is inserted from top to bottom and slidably arranged within the slide rail 10. The base plate 20 can rotate around the rotation axis of the guide member 21 on the upper surface of the base 1. A main support column 22 and two auxiliary support columns 23 are detachably arranged on the base plate 20. The main support column 22 is coaxially arranged with the rotation axis of the guide member 21, and the auxiliary support columns 23 are symmetrically arranged on both sides of the main support column 22.

[0023] like Figure 4 , Figure 5 As shown, both the main support column 22 and the auxiliary support column 23 adopt a double-tube telescopic structure. The inner tube is locked and fixed inside the outer tube by fastening components such as clamps or nuts set on the outer tube. After releasing the clamps or nuts from the inner tube, the inner tube can be freely raised and lowered along the length of the outer tube. After the length adjustment is completed, the inner tube is locked again by the fastening components to complete the length adjustment of the main support column 22 and the auxiliary support column 23.

[0024] By rotating the chassis 20 around the rotation axis of the guide member 21, the positions of the two auxiliary support columns 23 can be adjusted according to the actual position of the beam-column joint while ensuring that the support position of the main support column 22 remains unchanged. This ensures the support effect of the auxiliary support columns 23 on the beam-column joint. By setting the base 1 as the common base for all support components 2, each support component 2 can revolve around the central axis of the base 1. This ensures that the steel structure beams and columns are subjected to more balanced forces in the circumferential direction, effectively avoiding local stress concentration. The uniformity of force distribution is significantly improved, ensuring the uniformity and stability of the beam-column joint and facilitating overall fine-tuning based on dynamic changes in the joint force.

[0025] like Figure 5 , Figure 6As shown, a gear 4 is rotatably mounted inside the chassis 20, located between the two auxiliary support columns 23. The rotation axis of the gear 4 is vertically arranged. Racks 40 are slidably mounted inside the chassis 20, located on both sides of the gear 4. The racks 40 are parallel to each other and mesh with the gear 4. The auxiliary support columns 23 are detachably mounted on their respective racks 40. Under the linkage of the gear 4 and the racks 40, the two auxiliary support columns 23 move synchronously towards or away from each other. When the distance between the two auxiliary support columns 23 needs to be adjusted, simply push one auxiliary support column 23. Through the linkage of the racks 40 and the gear 4, the other auxiliary support column 23 can be driven to move synchronously. This greatly simplifies the operation process, achieves synchronous adjustment of multi-point support, improves adjustment efficiency, and ensures the consistency of the support positions of the two auxiliary support columns 23.

[0026] like Figure 5 , Figure 6 As shown, an L-shaped clamping plate 24 is rotatably mounted on the top of the secondary support column 23, and a hanging ring 25 is fixedly mounted on the bottom of the clamping plate 24. An adjusting rod 26 is suspended from the hanging ring 25. Workers on the ground can adjust the orientation of the clamping plate 24 by holding the adjusting rod 26, thereby ensuring that the clamping plate 24 can be smoothly rotated into place under the beam-column node to be supported. Limiting rods 27 are also threadedly connected to the chassis 20 on both sides of the chassis 20. The length of the limiting rods 27 is set along the sliding direction of the secondary support column 23, and the limiting rods 27 are located on the side of the secondary support column 23 away from the gear 4. The limiting rod 27 is used to limit the secondary support column 23 within the chassis 20. By rotating the limiting rod 27 until the end of the limiting rod 27 contacts the bottom outer wall of the secondary support column 23, the secondary support column 23 can be restricted from sliding away from the gear 4 under the action of the limiting rod 27, thus ensuring the stability of the secondary support column 23 when supporting the beam-column joint.

[0027] like Figure 5 As shown, a connecting assembly 3 is provided on the main support column 22. The connecting assembly 3 is used to connect the various support assemblies 2 sequentially, and the various support assemblies 2 rotate synchronously along the slide rail 10 under the traction of the connecting assembly 3. The connecting assembly 3 includes a clamp 30 detachably mounted on the main support column 22, and a connecting frame 31 sleeved on the outside of the main support column 22. The connecting frame 31 is mounted on the clamp 30, and the clamp 30 supports the connecting frame 31.

[0028] like Figure 1 , Figure 4 as well as Figure 5As shown, both ends of the connecting frame 31 extend along the path of the slide rail 10 towards the adjacent main support column 22. An adjustment hole 32 extends vertically through the connecting frame 31, and the length of the adjustment hole 32 also extends along the path of the slide rail 10. A plug-in post 33 is fixedly provided at the end of the connecting frame 31 for insertion into the adjustment hole 32 of the adjacent connecting frame 31. The plug-in post 33 can slide along the length direction of the adjustment hole 32. A fastener 34 is threaded onto the plug-in post 33 for tightening the plug-in post 33 onto the adjacent connecting frame 31. In this embodiment, the fastener 34 is a nut. Adjacent connecting frames 31 are sequentially connected and fixed to the fastener 34 via the plug-in post 33.

[0029] The main support columns 22 are sequentially connected and fixed using connecting components 3, allowing each main support column 22 to quickly adapt to beam-column joints with a defined diameter without requiring extensive leveling and positioning of each column individually. This improves efficiency, ensures accurate support positions, and guarantees the synchronicity and uniformity of stress on the beam-column joint. Furthermore, when fine-tuning of the support positions of the main support columns 22 is required, they can rotate synchronously under the constraint of connecting components 3, further enhancing adjustment efficiency.

[0030] like Figure 1 , Figure 2 as well as Figure 3 As shown, a central support column 5 is detachably installed on the fixing member 12 located on the central axis of the chassis 20. Various support components 2 are arranged circumferentially around the central support column 5. A connecting plate 50 is coaxially sleeved on the outside of the central support column 5. Multiple bearing frames 51 extending to the bottom of the connecting frame 31 are fixedly installed on the outer wall of the connecting plate 50, and these bearing frames 51 are arranged circumferentially at intervals around the outside of the connecting plate 50. Each connecting frame 31 is placed above its corresponding bearing frame 51, providing further support to each connecting frame 31. The circumferentially arranged bearing frames 51 can be used to temporarily place wire rods, thus achieving an integrated function of support and material storage. This design not only solves the problem of temporary storage of wire rods on the construction site and avoids the safety hazards caused by haphazard material stacking, but also makes full use of the space resources of the support structure, improving the orderliness and efficiency of construction organization.

[0031] like Figure 1 , Figure 2 as well as Figure 3As shown, a top cover 7 is detachably fitted onto the top of the central support column 5, and the top cover 7 is coaxially arranged with the central support column 5. The top cover 7 is rotatably mounted on the top of the central support column 5, and multiple guide rods 70 extending along the length direction of the central support column 5 are fixedly mounted on the top cover 7. A connecting plate 50 slides through the outside of each guide rod 70 along the length direction of the guide rods 70. A lifting sleeve 6 located below the connecting plate 50 is threadedly connected to the central support column 5. The connecting plate 50 is placed on the lifting sleeve 6, and the lifting sleeve 6 is used to push the connecting plate 50 up and down along the length direction of the central support column 5.

[0032] like Figure 1 , Figure 3 as well as Figure 4 As shown, the support assembly 2 also includes a horizontal frame 28 movably fitted between the main support column 22 and the two side auxiliary support columns 23. The horizontal frame 28 is horizontally arranged. A support frame 35 is detachably mounted on the connecting frame 31, and the horizontal frame 28 is placed on top of the support frame 35 to support the horizontal frame 28. The retractable inner tubes of the main support column 22 and the auxiliary support column 23 are mounted on the top of the crossbeam 28. When it is necessary to adjust the height of the inner tubes of the main support column 22 and the auxiliary support column 23, first release the clamps or nuts on the outer tube to lock the inner tube. Then, by rotating the lifting sleeve 6 in the forward or reverse direction, the height of the connecting plate 50 can be adjusted. The connecting plate 50 will drive the connecting frame 31, the support frame 35 and the crossbeam 28 to rise and fall synchronously through the bearing frame 51. This allows the height of the inner tubes of each set of main support columns 22 and auxiliary support columns 23 to be adjusted synchronously, ensuring the consistency of the height of each set of main support columns 22 and auxiliary support columns 23, and also greatly improving the height adjustment efficiency.

[0033] like Figure 1 , Figure 2 As shown, the splicing plate 13 is also provided with two sets of insertion holes 15, with the two insertion holes 15 in the same set arranged alternately along the extension direction of the support frame 51. The insertion holes 15 can be used for the bottom of the scaffolding or other climbing frame to be inserted and fixed to the base 1. Since each support component 2 is rotatably mounted on the base 1, during the erection or dismantling process, construction personnel do not need to repeatedly move the position to adjust each support point. They only need to rotate the support component 2 sequentially from a fixed point to complete the overall layout. This design greatly optimizes the construction process, brings significant operational convenience, and improves the efficiency of assembly and dismantling.

[0034] The implementation principle is as follows: By rotating the chassis 20 around the rotation axis of the guide member 21, the positions of the two auxiliary support columns 23 can be adjusted according to the actual position of the beam-column joint while ensuring that the support position of the main support column 22 remains unchanged. This ensures the support effect of the auxiliary support columns 23 on the beam-column joint. By setting the base 1 as the common base for all support components 2, each support component 2 can revolve around the central axis of the base 1. This ensures that the steel structure beam and column are subjected to more balanced forces in the circumferential direction, effectively avoiding local stress concentration, significantly improving the uniformity of force distribution, ensuring the uniformity and stability of the force distribution at the beam-column joint, and facilitating overall fine-tuning according to the dynamic changes in the force at the joint.

[0035] The two auxiliary support columns 23 move synchronously towards or away from each other under the linkage of gear 4 and rack 40. When it is necessary to adjust the distance between the two auxiliary support columns 23, simply push one auxiliary support column 23, and the linkage of rack 40 and gear 4 will drive the other auxiliary support column 23 to move synchronously. This greatly simplifies the operation process, realizes synchronous adjustment of multi-point support, improves adjustment efficiency, and ensures the consistency of the support positions of the two auxiliary support columns 23.

[0036] The circumferentially arranged support frames 51 can be used to temporarily place wire rods, thus realizing the integrated function of support and material storage. This design not only solves the problem of temporary storage of wire rods on the construction site and avoids the safety hazards caused by haphazard material stacking, but also makes full use of the space resources of the support structure, improving the orderliness and efficiency of construction organization. It enables synchronous adjustment of the inner tube height of each group of main support columns 22 and secondary support columns 23, ensuring the consistency of the height of each group of main support columns 22 and secondary support columns 23, while also greatly improving the efficiency of height adjustment.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A temporary support structure for beam-column joints in a building steel structure, characterized in that: The system includes a base (1), on which a slide rail (10) is provided. Multiple support components (2) are slidably arranged in the slide rail (10). Each support component (2) includes a chassis (20) placed on the base (1). A guide (21) is rotatably arranged on the chassis (20) and slidably arranged in the slide rail (10). A main support column (22) and a secondary support column (23) are provided on the chassis (20). A connecting component (3) is provided on the main support column (22). The connecting component (3) is used to connect each support component (2) in sequence. Each support component (2) rotates synchronously along the slide rail (10) under the traction of the connecting component (3).

2. The temporary support structure for beam-column joints of steel structure buildings according to claim 1, characterized in that: The secondary support columns (23) are symmetrically arranged on both sides of the main support column (22). A gear (4) is rotatably arranged in the chassis (20) between the two secondary support columns (23). A rack (40) is also slidably arranged in the chassis (20) on both sides of the gear (4). The rack (40) meshes with the gear (4). The secondary support columns (23) are respectively arranged on their respective racks (40). Under the linkage of the gear (4) and the rack (40), the two secondary support columns (23) move synchronously towards each other or away from each other.

3. The temporary support structure for beam-column joints of steel structure buildings according to claim 2, characterized in that: The top of the secondary support column (23) is rotatably provided with a clamping plate (24), and a hanging ring (25) is provided on the clamping plate (24). An adjusting rod (26) is suspended on the hanging ring (25). A limiting rod (27) is threadedly connected to the chassis (20). The limiting rod (27) is used to limit the secondary support column (23) within the chassis (20).

4. The temporary support structure for beam-column joints of steel structure buildings according to claim 1, characterized in that: The connecting assembly (3) includes a clamp (30) detachably mounted on the main support column (22) and a connecting frame (31) sleeved on the outside of the main support column (22); the connecting frame (31) is mounted on the clamp (30), and the connecting frame (31) extends along the path of the slide rail (10) towards the adjacent main support column (22); the connecting frame (31) has an adjustment hole (32) through it; the connecting frame (31) is provided with a plug-in post (33) for inserting into the adjustment hole (32); the plug-in post (33) is provided with a fastener (34) for tightening the plug-in post (33) onto the adjacent connecting frame (31).

5. The temporary support structure for beam-column joints of steel structure buildings according to claim 4, characterized in that: A central support column (5) is provided on the chassis (20), and the support assembly (2) is arranged circumferentially around the central support column (5); a connecting plate (50) is sleeved on the central support column (5), and multiple bearing frames (51) extending to the bottom of the connecting frame (31) are provided on the connecting plate (50). The bearing frames (51) are arranged circumferentially around the outside of the connecting plate (50), and the connecting frame (31) is placed on the bearing frame (51).

6. The temporary support structure for beam-column joints of steel structure buildings according to claim 5, characterized in that: The central support column (5) is threaded with a lifting sleeve (6) located below the connecting plate (50). The lifting sleeve (6) is used to push the connecting plate (50) up and down along the length of the central support column (5).

7. The temporary support structure for beam-column joints of steel structure buildings according to claim 6, characterized in that: The top of the central support column (5) is detachably fitted with a top cover (7), which is rotatably mounted on the top of the central support column (5); the top cover (7) is provided with a guide rod (70) whose length extends along the lifting direction of the connecting plate (50), and the connecting plate (50) slides along the length direction of the guide rod (70) on the guide rod (70).

8. The temporary support structure for beam-column joints of steel structure buildings according to claim 7, characterized in that: The base (1) includes a plurality of sequentially spliced ​​unit plates (11) and a fixing member (12) for limiting and fixing each sequentially spliced ​​unit plate (11); a splicing plate (13) is provided at the splicing point of the unit plate (11), and a through hole (14) for the fixing member (12) to pass through the splicing plate (13), and the shape of the fixing member (12) is adapted to the shape of the through hole (14); the central support column (5) is detachably installed on the fixing member (12).

9. The temporary support structure for beam-column joints of steel structure buildings according to claim 8, characterized in that: The splicing plate (13) is also provided with a plurality of insertion holes (15), which are arranged sequentially at intervals along the extension direction of the support frame (51).

10. The temporary support structure for beam-column joints of steel structure buildings according to claim 9, characterized in that: The support assembly (2) also includes a crossbeam (28) that is movably sleeved between the main support column (22) and the two side secondary support columns (23). A support frame (35) is provided on the connecting frame (31). The crossbeam (28) is provided on the support frame (35). The main support column (22) and the secondary support column (23) are both telescopic structures. The telescopic ends of the main support column (22) and the secondary support column (23) are mounted on the top of the crossbeam (28).

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