Boxed support steel column and method of use

Abstract

This invention belongs to the field of steel column support technology and discloses a box-type steel column support, including a box-type steel column body. A base is fixedly connected to the bottom of the box-type steel column body, and four fixing blocks are fixedly connected to the outer wall of the base. This invention uses a first threaded rod, a lower wedge, and an upper wedge to form a bottom-adjustable leveling mechanism. By inserting a matching tool into the hexagonal groove and rotating the first threaded rod on each side in sequence, the first threaded rod is driven inward through threaded transmission, smoothly pushing the lower wedge to move horizontally. With the inclined surface cooperation structure of the lower and upper wedges, the horizontal thrust can be converted into a vertical driving force, causing the lower wedge to extend downward synchronously. The four sets of independently adjustable wedge support structures can respectively correct vertical deviations in different directions, achieving precise vertical fine-tuning of the box-type steel column body and the base without the need for on-site padding.

Description

Technical Field

[0001] This invention belongs to the field of steel support column technology, specifically a box-type steel support column and its usage method. Background Technology

[0002] Box-type braced steel columns (also known as box-type support columns) are the core vertical components in the frame-bracing system of steel structure buildings. They are mainly composed of closed rectangular / square box sections and work together with steel bracing to bear both vertical loads and horizontal lateral resistance functions. They also have the characteristics of high axial compression bearing capacity and excellent bending and torsional resistance. They are key components in multi-story and high-rise steel structures to realize the seismic design concept of "strong column-weak beam and strong node-weak component".

[0003] The installation support surface for box-type steel columns is mostly cast-in-place concrete floor, and the surface flatness generally has deviations. Direct installation can easily lead to the steel column's verticality failing to meet construction specifications. Traditional construction methods require the addition of shims on-site for repeated adjustments, which is cumbersome and inefficient, significantly slowing down the overall installation progress. Moreover, the steel column is under eccentric load for a long time, and uneven stress will accelerate component wear and fatigue damage to connection nodes, significantly shortening the overall service life of the structure. To address the above technical defects, this invention optimizes the bottom structure of the box-type steel column by adding an adjustable leveling support component. During installation, the verticality of the steel column can be quickly and accurately adjusted, eliminating the need for repeated adjustments and effectively improving installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a box-type support steel column and its usage method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a box-type support steel column, comprising a box-type support steel column body, a base fixedly connected to the bottom of the box-type support steel column body, and a fixing block fixedly connected to the outer side wall of the base. The number of fixing blocks is four, and a first threaded rod is threadedly sleeved inside each of the four fixing blocks. One end of the first threaded rod abuts against a lower wedge block, and the other end of the first threaded rod has a hexagonal groove. The outer side of the lower wedge block abuts against the inner side of the fixing block, and an upper wedge block is slidably connected to the top of the lower wedge block. The upper wedge block is fixedly installed inside the base.

[0006] Preferably, the upper wedge has a groove inside, and a limiting block is slidably connected to the inner surface of the groove. The bottom of the limiting block is fixedly connected to the top of the lower wedge.

[0007] Preferably, the base has four mounting holes on its interior around all four sides, and the four mounting holes are of the same size.

[0008] Preferably, the outer wall of the box-shaped support steel column body is fixedly connected with a bracket, and the top of the bracket supports a crossbeam.

[0009] Preferably, an installation block located directly below the crossbeam is fixedly installed on the outer wall of the box-shaped support steel column body. A movable shaft is movably sleeved inside the installation block. A rotating rod and a gear are fixedly sleeved on the outer surface of the movable shaft. The side of the rotating rod is rotatably engaged with the inner wall of the installation block, and the outer surface of the gear is rotatably engaged with the outer wall of the installation block. An installation seat is hinged to the other end of the rotating rod. A fixing plate located directly in front of the installation block is fixedly connected to the outer side of the box-shaped support steel column body. A No. 2 bolt rod is threaded inside the fixing plate. A locking plate is movably sleeved on the outer surface of the No. 2 bolt rod. The locking plate is slidably connected to the outer wall of the box-shaped support steel column body. A toothed groove is opened inside the locking plate, and the toothed groove is adapted to the gear.

[0010] Preferably, two round rods are fixedly connected to the outer wall of the mounting block. The other end of each round rod is fixedly connected to the outer wall of the fixing plate, and the outer surface of each round rod is movably sleeved with the inner surface of the locking plate.

[0011] Preferably, the top of the box-type support steel column body is provided with a grouting port, and an X-stiffening plate is fixedly installed inside the box-type support steel column body, and a connecting plate is fixedly connected to the outer wall of the X-stiffening plate.

[0012] A method for using box-type support steel columns, the specific steps of which are as follows: Step 1: Lifting and positioning. Use lifting equipment to lift the box-type support steel column body to the preset installation base, align the mounting holes on the base with the pre-embedded anchor bolts in the foundation, and complete the initial positioning of the column. Step 2: Verticality adjustment. Insert the hexagonal tool into the hexagonal slot, and rotate the No. 1 threaded rod around the perimeter in sequence. Push the lower wedge block to move horizontally along the inclined surface of the upper wedge block and extend vertically at the same time. Adjust the extension amount of the lower wedge block on each side to correct the verticality of the column until the deviation meets the construction specification requirements. Step 3: After the column is fixed and the verticality is adjusted to be qualified, tighten the matching nuts of the foundation anchor bolts to firmly connect the base to the installation base surface, and complete the fixing of the bottom of the column. Step 4: Assembly and reinforcement of the crossbeam. Hoist the crossbeam onto the bracket and position it. Rotate the No. 2 bolt rod to move the locking plate and release the tooth groove from the gear. Flip the rotating rod upward to make the mounting seat press against the bottom of the crossbeam. Then rotate the No. 2 bolt rod in the opposite direction to push the locking plate back to its original position. Lock the rotating rod through the meshing of the tooth groove and the gear to complete the auxiliary support and reinforcement of the crossbeam. Step 5: Internal grouting reinforcement. High-strength concrete is injected into the interior of the box-type support steel column in layers through the grouting port. After compaction by vibration, it is cured to the design strength to complete the overall construction.

[0013] Preferably, the verticality adjustment in step two adopts a diagonal alternating adjustment method, adjusting the two sets of No. 1 threaded rods at diagonal positions in turn, with the single adjustment amount controlled within 2mm, and real-time verification with verticality detection equipment to avoid the column from shifting.

[0014] Preferably, the concrete pouring in step five adopts a layered pouring process, with the pouring height of each layer controlled at 1.2m~1.5m. After each layer is poured, an immersion vibrator is used to compact it before the next layer is poured.

[0015] The beneficial effects of this invention are as follows: 1. This invention establishes an adjustable leveling mechanism at the bottom by setting up a first threaded rod, a lower wedge, and an upper wedge. Inserting the matching tool into the hexagonal groove and rotating the first threaded rod on each side sequentially allows the first threaded rod to be fed inwards via threaded transmission, smoothly pushing the lower wedge to move horizontally. Utilizing the inclined surface cooperation structure of the lower and upper wedges, the horizontal thrust is converted into a vertical driving force, causing the lower wedge to extend downwards synchronously. The four independently adjustable wedge support structures can correct vertical deviations in different directions, achieving precise vertical fine-tuning of the box-type support steel column body and base without the need for on-site padding. This effectively avoids installation errors caused by unevenness of the foundation surface, significantly improving the installation accuracy and construction efficiency of the steel column.

[0016] 2. This invention constructs a lockable auxiliary support structure for the crossbeam by setting up a rotating rod, gear, mounting base, and locking plate. Rotating the No. 2 bolt rod can drive the locking plate to slide horizontally through threaded transmission, causing the tooth groove and gear to disengage and releasing the rotation constraint on the rotating rod. Then, the rotating rod is flipped upward around the movable shaft until the mounting base at its end is tightly abutted against the bottom of the crossbeam. Then, the No. 2 bolt rod is rotated in the opposite direction to drive the locking plate to reset. The meshing of the tooth groove and gear locks the support angle of the rotating rod, providing stable bottom support for the crossbeam and effectively enhancing the load-bearing reliability and structural integrity of the beam-column joint.

[0017] 3. This invention constructs an internal stiffening assembly by setting up X-stiffening plates and connecting plates. Multiple sets of stiffening assemblies are evenly and equidistantly distributed vertically inside the box-type support steel column body, forming a stable stress-bearing whole with the inner wall of the column. This structure can effectively disperse vertical loads and horizontal lateral forces, optimize the stress transmission path inside the column body, and significantly improve the overall strength and torsional stability of the box-type support steel column body. Combined with the high-strength concrete poured inside, it can significantly reduce the probability of local buckling and deformation of the steel column under large loads, and extend the service life of the structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the rotating rod after rotation adjustment according to the present invention; Figure 3 This is a bottom view of the base structure of the present invention; Figure 4 This is a cross-sectional view of the base of the present invention; Figure 5 This is a schematic diagram of the tooth groove structure of the present invention; Figure 6 This is a cross-sectional structural schematic diagram of the box-type support steel column body of the present invention; Figure 7 This is a schematic diagram of the X stiffening plate structure of the present invention.

[0019] In the diagram: 1. Box-type support steel column body; 2. Base; 3. Fixing block; 4. No. 1 threaded rod; 5. Lower wedge block; 6. Upper wedge block; 7. Hexagonal groove; 8. Sliding groove; 9. Limiting block; 10. Mounting hole; 11. Bracket; 12. Crossbeam; 13. Mounting block; 14. Movable shaft; 15. Rotating rod; 16. Gear; 17. Mounting seat; 18. Fixing plate; 19. No. 2 bolt rod; 20. Locking plate; 21. Tooth groove; 22. Round rod; 23. Grouting port; 24. X-stiffening plate; 25. Connecting plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1 to 7 As shown, this embodiment of the invention provides a box-type support steel column, including a box-type support steel column body 1. A base 2 is fixedly connected to the bottom of the box-type support steel column body 1. A fixing block 3 is fixedly connected to the outer side wall of the base 2. There are four fixing blocks 3. A first threaded rod 4 is threadedly sleeved inside each of the four fixing blocks 3. One end of the first threaded rod 4 abuts against a lower wedge block 5. A hexagonal groove 7 is opened inside the other end of the first threaded rod 4. The outer side of the lower wedge block 5 abuts against the inner side of the fixing block 3. An upper wedge block 6 is slidably connected to the top of the lower wedge block 5. The upper wedge block 6 is fixedly installed inside the base 2.

[0022] Insert the tool into the hexagonal slot 7 and rotate the first threaded rod 4 in sequence. This will cause the first threaded rod 4 to move inward and push the lower wedge 5 to move horizontally. Since the lower wedge 5 and the upper wedge 6 adopt an inclined surface design, as the lower wedge 5 moves horizontally, the squeezing action of the inclined surface will cause the lower wedge 5 to simultaneously produce vertical displacement and extend downward. The downward movement of the four lower wedges 5 realizes the function of fine adjustment of the verticality of the box-type support steel column body 1 and the base 2, thereby improving the installation accuracy of the box-type support steel column body 1.

[0023] The upper wedge 6 has a groove 8 inside, and a limit block 9 is slidably connected to the inner surface of the groove 8. The bottom of the limit block 9 is fixedly connected to the top of the lower wedge 5.

[0024] The design of the slide groove 8 and the limiting block 9 serves to guide and limit the lower wedge block 5, enabling the lower wedge block 5 to move downward stably for adjustment, while also achieving the function of horizontal anti-disengagement limiting of the lower wedge block 5.

[0025] The base 2 has four mounting holes 10 on its four sides, and the four mounting holes 10 are the same size.

[0026] The four mounting holes 10 are compatible with the anchor bolts of the mounting base, which can play a role in fixing the box-type support steel column body 1 as a whole.

[0027] Among them, the outer wall of the box-type support steel column body 1 is fixedly connected with a bracket 11, and the top of the bracket 11 supports a crossbeam 12.

[0028] The design of bracket 11 serves to connect the crossbeam 12.

[0029] The box-type support steel column body 1 has a mounting block 13 fixedly installed on its outer side wall, located directly below the crossbeam 12. The mounting block 13 has a movable shaft 14 movably sleeved inside, and a rotating rod 15 and a gear 16 are fixedly sleeved on the outer surface of the movable shaft 14. The side of the rotating rod 15 is rotatably engaged with the inner side wall of the mounting block 13, and the outer surface of the gear 16 is rotatably engaged with the outer side wall of the mounting block 13. The other end of the rotating rod 15 is hinged to a mounting seat 17. The outer side of the box-type support steel column body 1 is fixedly connected to a fixing plate 18 located directly in front of the mounting block 13. The fixing plate 18 has a threaded screw rod 19 inside, and a locking plate 20 is movably sleeved on the outer surface of the screw rod 19. The locking plate 20 is slidably connected to the outer side wall of the box-type support steel column body 1. The locking plate 20 has a toothed groove 21 inside, which is adapted to the gear 16.

[0030] Rotating the second bolt rod 19 will cause the locking plate 20 to move horizontally, causing the tooth groove 21 to separate from the gear 16 and release the locking effect on the rotating rod 15. Then, the rotating rod 15 will rotate around the movable shaft 14 until the mounting base 17 abuts against the bottom of the crossbeam 12. Subsequently, rotating the second bolt rod 19 in the opposite direction will cause the locking plate 20 to reset, causing the tooth groove 21 to mesh with the gear 16 and lock the rotating rod 15. Under the action of the rotating rod 15 and the mounting base 17, the crossbeam 12 is supported.

[0031] Among them, two round rods 22 are fixedly connected to the outer wall of the mounting block 13. The other end of the two round rods 22 is fixedly connected to the outer wall of the fixing plate 18, and the outer surface of the two round rods 22 is movably sleeved with the inner surface of the locking plate 20.

[0032] The design of the two round rods 22 serves to guide the locking plate 20, enabling the locking plate 20 to move horizontally stably.

[0033] The top of the box-type support steel column body 1 is provided with a grouting port 23, and an X stiffening plate 24 is fixedly installed inside the box-type support steel column body 1. A connecting plate 25 is fixedly connected to the outer wall of the X stiffening plate 24.

[0034] The design of the grouting port 23 facilitates the filling of high-strength concrete into the interior of the box-type support steel column body 1. At the same time, the stiffening plate 24 and the connecting plate 25 form a stiffening assembly, which can effectively improve the overall strength and stability of the box-type support steel column body 1 and reduce the probability of deformation of the box-type support steel column body 1 under heavy loads.

[0035] A method for using box-type support steel columns, the specific steps of which are as follows: Step 1: Lifting and positioning. Use lifting equipment to lift the box-type support steel column body 1 to the preset installation base, so that the mounting holes 10 on the base 2 are aligned with the pre-embedded anchor bolts in the foundation, and the column is initially positioned. Step 2: Verticality adjustment. Insert the internal hexagon tool into the hexagonal slot 7, and rotate the No. 1 threaded rod 4 around the perimeter in sequence. Push the lower wedge 5 to move horizontally along the inclined surface of the upper wedge 6 and extend vertically at the same time. Adjust the extension amount of the lower wedge 5 on each side to correct the verticality of the column until the deviation meets the construction specification requirements. Step 3: After the column is fixed and the verticality is adjusted to be qualified, tighten the matching nuts of the foundation anchor bolts to firmly connect the base 2 to the installation base surface, and complete the fixing of the bottom of the column. Step 4: Assembly and reinforcement of the crossbeam. Hoist the crossbeam 12 onto the bracket 11 and position it. Rotate the second bolt rod 19 to move the locking plate 20, release the locking of the gear 16 by the tooth groove 21, flip the rotating rod 15 upward to make the mounting seat 17 press against the bottom of the crossbeam 12, and then rotate the second bolt rod 19 in the opposite direction to push the locking plate 20 back to its original position. The rotating rod 15 is locked by the meshing of the tooth groove 21 and the gear 16, thus completing the auxiliary support reinforcement of the crossbeam. Step 5: Internal grouting reinforcement. High-strength concrete is injected into the box-type support steel column body 1 in layers through grouting port 23, compacted by vibration, and cured to the design strength to complete the overall construction.

[0036] This process forms a complete construction closed loop from column positioning and precision adjustment to node reinforcement and internal strengthening. It can complete the precise adjustment of the verticality of the steel column without the need for additional on-site processing of pads, which greatly simplifies on-site procedures and shortens the installation cycle. The flip-lockable support structure effectively strengthens the load-bearing capacity of the beam-column joint, and the internal grouting process combined with the built-in stiffening components significantly improves the overall strength and seismic performance of the column, taking into account both construction efficiency and structural reliability, and effectively reducing the risk of later structural fatigue deformation, node failure and other defects.

[0037] In step two, the verticality adjustment adopts a diagonal alternating adjustment method, adjusting the two sets of No. 1 thread rods 4 at the diagonal positions in turn, with the single adjustment amount controlled within 2mm, and real-time verification with verticality detection equipment to avoid the column from shifting.

[0038] The diagonal alternating adjustment method ensures uniform force distribution around the column, avoiding slippage and displacement caused by unilateral pushing; small-step adjustment combined with real-time detection can accurately control the adjustment amount and significantly improve the verticality calibration accuracy.

[0039] In step five, the concrete pouring adopts a layered pouring process. The pouring height of each layer is controlled between 1.2m and 1.5m. After each layer is poured, an immersion vibrator is used to compact it before the next layer is poured.

[0040] Layered pouring combined with immersion vibration can effectively avoid concrete segregation and internal honeycomb voids, ensuring that the concrete is poured densely and evenly, and significantly improving the internal forming quality and structural stress performance of the column.

[0041] Working principle and usage process: First, the box-type support steel column body 1 is hoisted to the installation position designed in the construction using lifting equipment. The column is then adjusted so that the four mounting holes 10 on the base 2 are aligned with the anchor bolts pre-embedded in the foundation. The column is then slowly lowered so that it initially rests on the installation base surface.

[0042] Then, insert the Allen wrench into the hexagonal groove 7 at the end of the No. 1 threaded rod 4, and rotate the four No. 1 threaded rods 4 in sequence using an alternating diagonal operation. The No. 1 threaded rod 4 is screwed inward along the thread of the fixing block 3, pushing the lower wedge 5 to move horizontally inward along the inclined surface of the upper wedge 6. At the same time, the lower wedge 5 extends downward under the force of the inclined surface. With the help of a plumb bob or total station, the verticality of the column is detected in real time. By adjusting the extension length of the lower wedge 5 in the four directions, the support height on each side of the column is finely adjusted until the verticality deviation of the box-type support steel column body 1 meets the construction specifications. After the verticality is adjusted to be qualified, tighten the fastening nuts on the foundation anchor bolts in sequence to firmly press the base 2 into the installation base surface, completing the bottom fixing operation of the box-type support steel column body 1.

[0043] Next, the crossbeam 12 is hoisted onto the bracket 11 to complete the initial docking and positioning. Then, the second bolt rod 19 is rotated, and the second bolt rod 19 is screwed outward along the thread of the fixing plate 18, causing the locking plate 20 to slide outward along the two round rods 22, so that the tooth groove 21 on the locking plate 20 disengages from the gear 16, releasing the rotation lock on the rotating rod 15. The rotating rod 15 is flipped upward, so that it rotates upward around the movable shaft 14 until the mounting seat 17 hinged at the end of the rotating rod 15 tightly abuts against the bottom surface of the crossbeam 12. Then, the second bolt rod 19 is rotated in the opposite direction, pushing the locking plate 20 to slide inward and reset, so that the tooth groove 21 re-engages with the gear 16, locking the support angle of the rotating rod 15, and completing the auxiliary support and reinforcement of the crossbeam 12.

[0044] Finally, high-strength self-compacting concrete is poured into the column body layer by layer through the grouting port 23 at the top of the box-type support steel column body 1. The pouring height of each layer is controlled at 1.2~1.5m. After each layer is poured, an immersion vibrator is used to compact it to avoid honeycomb voids. After all the concrete is poured and cured to the design strength, the installation of the entire box-type support steel column is completed.

Claims

1. A box-type support steel column, comprising a box-type support steel column body (1), characterized in that: The bottom of the box-type support steel column body (1) is fixedly connected to a base (2), and the outer side wall of the base (2) is fixedly connected to a fixing block (3). There are four fixing blocks (3). The four fixing blocks (3) are threaded with a first thread rod (4). One end of the first thread rod (4) abuts against a lower wedge block (5). The other end of the first thread rod (4) is provided with a hexagonal groove (7). The outer side of the lower wedge block (5) abuts against the inner side of the fixing block (3). The top of the lower wedge block (5) is slidably connected to an upper wedge block (6). The upper wedge block (6) is fixedly installed inside the base (2).

2. The box-type support steel column according to claim 1, characterized in that: The upper wedge (6) has a groove (8) inside, and a limiting block (9) is slidably connected to the inner surface of the groove (8). The bottom of the limiting block (9) is fixedly connected to the top of the lower wedge (5).

3. A box-type support steel column according to claim 1, characterized in that: The base (2) has four mounting holes (10) on its four sides. The four mounting holes (10) are the same size.

4. A box-type support steel column according to claim 1, characterized in that: The outer wall of the box-type support steel column body (1) is fixedly connected with a bracket (11), and the top of the bracket (11) supports a crossbeam (12).

5. A box-type support steel column according to claim 1, characterized in that: The outer wall of the box-type support steel column body (1) is fixedly installed with a mounting block (13) located directly below the crossbeam (12). A movable shaft (14) is movably sleeved inside the mounting block (13). A rotating rod (15) and a gear (16) are fixedly sleeved on the outer surface of the movable shaft (14). The side of the rotating rod (15) rotatably engages with the inner wall of the mounting block (13), and the outer surface of the gear (16) rotatably engages with the outer wall of the mounting block (13). The other end of the rotating rod (15) is hinged to a… Mounting base (17), the outer side of the box-type support steel column body (1) is fixedly connected to a fixing plate (18) located in front of the mounting block (13), the fixing plate (18) is threaded with a second bolt rod (19), the outer surface of the second bolt rod (19) is movably fitted with a locking plate (20), the locking plate (20) is slidably connected to the outer wall of the box-type support steel column body (1), the locking plate (20) is provided with a tooth groove (21) inside, the tooth groove (21) is adapted to the gear (16).

6. A box-type support steel column according to claim 5, characterized in that: The outer wall of the mounting block (13) is fixedly connected with a round rod (22). There are two round rods (22). The other end of each round rod (22) is fixedly connected to the outer wall of the fixing plate (18). The outer surface of each round rod (22) is movably sleeved with the inner surface of the locking plate (20).

7. A box-type support steel column according to claim 1, characterized in that: The top of the box-type support steel column body (1) is provided with a grouting port (23), and an X stiffening plate (24) is fixedly installed inside the box-type support steel column body (1). A connecting plate (25) is fixedly connected to the outer wall of the X stiffening plate (24).

8. A method for using a box-type support steel column, characterized in that, The specific steps are as follows: Step 1: Lifting and positioning. Using lifting equipment, the box-type support steel column body (1) is lifted to the preset installation base surface, so that the installation hole (10) on the base (2) is aligned with the pre-embedded anchor bolt in the foundation, and the column is initially positioned. Step 2: Verticality adjustment. Insert the internal hexagon tool into the hexagonal slot (7), rotate the No. 1 threaded rod (4) around the perimeter in sequence, push the lower wedge (5) to move horizontally along the inclined surface of the upper wedge (6) and extend vertically at the same time. Adjust the extension amount of the lower wedge (5) on each side to correct the verticality of the column until the deviation meets the requirements of the construction specifications. Step 3: After the column is fixed and the verticality is adjusted to be qualified, tighten the matching nuts of the foundation anchor bolts to firmly connect the base (2) to the installation base surface and complete the bottom fixing of the column; Step 4: Assembly and reinforcement of the crossbeam. Hoist the crossbeam (12) onto the bracket (11) and rotate the second bolt rod (19) to move the locking plate (20), release the locking of the gear (16) by the tooth groove (21), flip the rotating rod (15) upward to make the mounting seat (17) press against the bottom of the crossbeam (12), and then rotate the second bolt rod (19) in the opposite direction to push the locking plate (20) back to its original position. Lock the rotating rod (15) by the meshing of the tooth groove (21) and the gear (16), thus completing the auxiliary support reinforcement of the crossbeam. Step 5: Internal grouting reinforcement. High-strength concrete is injected into the box-type support steel column body (1) through the grouting port (23) in layers. After compaction, it is cured to the design strength to complete the overall construction.

9. The method of using a box-type support steel column according to claim 8, characterized in that: In step two, the verticality adjustment adopts a diagonal alternating adjustment method, adjusting the two sets of No. 1 thread rods (4) at the diagonal positions in turn, with the single adjustment amount controlled within 2mm, and real-time verification with verticality detection equipment to avoid the column from shifting.

10. The method of using a box-type support steel column according to claim 8, characterized in that: The concrete pouring in step five adopts a layered pouring process. The pouring height of each layer is controlled between 1.2m and 1.5m. After each layer is poured, an immersion vibrator is used to compact it before the next layer is poured.

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