A construction method of a steel column and a construction method of a station building

Abstract

The application relates to a steel column construction method and a station building construction method, and the steel column construction method comprises the following steps of S1, pouring a first concrete cushion and pre-burying an anchor bolt support in the first concrete cushion, wherein the anchor bolt support comprises a plurality of screw rods which extend outwards from the first concrete cushion; S2, installing a first section column on the anchor bolt support, making the screw rods pass through the bottom plate of the first section column, arranging nuts which are respectively pressed on the two sides of the bottom plate on the screw rods, and adjusting the nuts on the screw rods to make the first section column incline towards the outside; S3, pouring a second concrete cushion; S4, hoisting a second section column to make the second section column be connected with the exposed end of the first section column; S5, hoisting a third section column to make the third section column be connected with the end of the second section column, and installing a temporary support frame between the top plate of the third section column and the second concrete cushion. The application guarantees the installation precision and stability of the steel column, and shortens the construction period of the station building.

Description

Technical Field

[0001] This application relates to the field of station building construction technology, and in particular to a method for constructing steel columns and a method for constructing station buildings. Background Technology

[0002] During station construction, steel columns are generally required to support the roof. For some special station buildings, due to space utilization or artistic considerations, the bottom of the steel columns needs to be arranged at an angle. However, angled steel columns present difficulties in positioning and installation. When installing the roof, the stability of the preceding structures must be considered. That is, backfilling can only begin after the adjacent three spans of underground space structure have been poured and reached sufficient strength, and then the roof truss can be hoisted. This ensures that the steel columns have sufficient stability to support the roof during construction. This will extend the construction period, especially if the progress of the preceding construction is delayed, making it difficult to complete the subsequent roof construction on schedule.

[0003] In summary, existing technologies suffer from problems such as difficulty in positioning and installing inclined steel columns, as well as excessively long construction periods for roof structures. Summary of the Invention

[0004] Therefore, it is necessary to provide a construction method for steel columns and a construction method for station buildings, the specific technical solutions of which are as follows.

[0005] A construction method for a steel column, characterized in that the steel column comprises a first section, a second section, and a third section connected sequentially; the first section is inclined outwards, the second section comprises a first segment inclined in the same direction as the first section and a second segment arranged vertically, and the third section is inclined inwards, causing the steel column to bulge outwards; the construction method includes:

[0006] S1. Pour the first concrete foundation and pre-embed anchor bolt brackets in the first concrete foundation. The anchor bolt brackets include multiple screws extending outward from the first concrete foundation.

[0007] S2. Install a column section on the anchor bolt bracket, so that the screw rod passes through the base plate of the column section, and set nuts on the screw rod that are respectively pressed against both sides of the base plate. Adjust the nuts on each screw rod to make the column section tilt outward.

[0008] S3. Cast a second concrete foundation on top of the first concrete foundation, so that the end part of a column section is exposed outward.

[0009] S4. Hoist the second column section to connect the exposed end of the second column section to the first column section; corbels are symmetrically connected to both sides of the second column section, and temporary support rods are installed between the corbels and the second concrete foundation.

[0010] S5. Without pouring the outer concrete and removing the temporary support rods, or after pouring the outer concrete and removing the temporary support rods at the exposed end of one column and the first section of the second column, hoist the third column to connect the ends of the third column and the second column, and install a temporary support frame between the top plate of the third column and the second concrete foundation.

[0011] Furthermore, the process of pre-embedding the anchor bolt support in the first concrete foundation includes:

[0012] S11. Pour the foundation pad layer, and pre-embed the first and second embedded parts in the foundation pad layer. Multiple first embedded parts are arranged in a rectangular shape, and multiple second embedded parts are arranged on the outside of the rectangle.

[0013] S12. Weld angle steel onto the first embedded part respectively;

[0014] S13. Weld the anchor bolt bracket to the angle steel; the anchor bolt bracket includes multiple screws and a rectangular frame, the bottom end of the screw is welded with a connecting plate, so that the connecting plate is welded to the angle steel, and the rectangular frame is welded to multiple screws in sequence.

[0015] S14. Weld the first diagonal brace to the second embedded part and weld the first diagonal brace to the rectangular frame so that the first diagonal brace provides diagonal support to the anchor bolt bracket.

[0016] S15. Pour the first concrete foundation, and reserve some bolts to extend outward from the first concrete foundation.

[0017] Furthermore, a third embedded part is pre-embedded when the first concrete foundation is poured, so that the third embedded part is located at the inside corner of a column section; after adjusting the nuts on each screw to tilt the column section outward, a second diagonal brace is installed between the column section and the third embedded part.

[0018] Furthermore, the nut includes a fixed nut located above the base plate and an adjusting nut located below the base plate; an adjusting seat is provided between the adjusting nut and the base plate; the adjusting seat includes a seat body and an adjusting block, the seat body has a light hole for accommodating the screw passing through, the surface of the seat body has an adjusting groove, and the bottom wall of the adjusting groove is arc-shaped; the adjusting block includes a first plane abutting against the base plate and a first arc surface that slides with the bottom wall of the adjusting groove, so that the inclination of the first plane changes when the adjusting block slides relative to the bottom wall of the adjusting groove; the process of adjusting the height of the nut on each screw to tilt one section of the column outward includes:

[0019] S21. Tighten the fixing nuts on each screw to leave adjustment space for the base plate;

[0020] S22. Adjust the base plate to the designed height and tilt.

[0021] S23. Tighten each adjusting nut to move each adjusting seat until the first plane of the moving block abuts against the bottom of the base plate;

[0022] S24. Tighten the fixing bolts.

[0023] Furthermore, a first positioning plate is connected to the end of the first column section, and a second positioning plate is connected to the end of the second column section. The first positioning plate and the second positioning plate are aligned, and the first positioning plate and the second positioning plate are respectively bolted to the fixing plate.

[0024] A construction method for a station building, comprising:

[0025] T1. Construct steel columns according to any of the above construction methods;

[0026] T2. Hoist the main truss, connect the main truss to the three-section column, and use temporary support frames to support the main truss;

[0027] T3. Hoist the secondary truss and fix it between the adjacent main trusses;

[0028] T4. Hoist the members between the secondary trusses to complete the roof installation;

[0029] T5. After the concrete reaches the design strength, unload the temporary support frame and transfer the load of the roof to the top of the column.

[0030] Furthermore, the temporary support frame includes four uprights, diagonal braces, a steel frame platform, and a positioning jig; the four uprights are respectively fixed to the second concrete foundation by third embedded parts, and multiple diagonal braces are connected between adjacent uprights; the steel frame platform is installed on the top of the uprights; the positioning jig includes positioning columns fixed to the steel frame platform, and jig plates fixed to the positioning columns in a vertical arrangement; after the main truss is pressed onto the jig plate, clamping plates are welded onto the jig plate so that the clamping plates are located on both sides of the main truss to limit the main truss.

[0031] Furthermore, when unloading the temporary support frame, the frame plate is cut multiple times at the same height, with each cut controlled at 5-10mm, until the roof no longer shifts downwards after a section of the frame plate is removed. Finally, the remaining temporary support frame is dismantled.

[0032] Beneficial effects: 1. The construction method for steel columns provided by this invention involves layered pouring of concrete foundations. Anchor bolt supports are pre-embedded during the pouring of the first concrete foundation, dividing the steel column into three sections and fixing one section to the anchor bolt supports. The tilt of the first section is adjusted using screws and nuts to ensure precise adjustment to the designed inclination. The second concrete foundation is then poured, exposing part of the first section, which is then used to fix the first section, ensuring the stability of its installation. This ensures both the installation accuracy and stability of the steel column.

[0033] 2. The present invention provides a construction method for a steel column, in which temporary support rods are used to support the two-section column after construction, and a third-section column is installed after the outer casing of the two-section column is poured, and a temporary support frame is used to support the third-section column, thereby improving the stability of the steel column and preventing the steel column from tilting during construction.

[0034] 3. The construction method for a steel column provided by the present invention uses the adjusting block on the adjusting seat to support the base plate when adjusting the inclination of a column section, thereby increasing the supporting area and avoiding concentrated stress distribution that could cause local damage, thus preventing the column section from becoming unstable and failing to meet the design requirements for installation accuracy.

[0035] 4. The construction method for a station building provided by this invention allows for roof construction without waiting for the poured foundation to reach its strength. During construction, a temporary support frame of three-section columns is used to support the roof. The steel columns themselves are not subject to the load of the roof. Once construction is completed and the underlying structure has reached its strength, the load is transferred to the steel columns, ensuring that the steel columns are not affected by the roof load during construction and shortening the construction period. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a construction flowchart for steel columns;

[0038] Figure 2 This is a structural schematic diagram of a steel column;

[0039] Figure 3 This is a schematic diagram after the foundation pad has been poured.

[0040] Figure 4 This is a schematic diagram after the first diagonal brace has been installed;

[0041] Figure 5 A schematic diagram showing the result after the first concrete foundation has been poured.

[0042] Figure 6 This is a schematic diagram showing the installation of one column section;

[0043] Figure 7 This is a schematic diagram of the installation of the base plate and the screw.

[0044] Figure 8 A schematic diagram showing the aftermath of pouring the second concrete foundation.

[0045] Figure 9This is a schematic diagram showing the two columns after hoisting.

[0046] Figure 10 This is a schematic diagram of the node connection between column section one and column section two;

[0047] Figure 11 This is a schematic diagram showing the three-section column after hoisting.

[0048] Figure 12 This is a construction flowchart for the station building;

[0049] Figure 13 This is a schematic diagram of the temporary support frame layout;

[0050] Figure 14 This is a schematic diagram showing the connection between the temporary support frame and the main truss;

[0051] Figure 15 This is a schematic diagram of the layout of the positioning frame;

[0052] Explanation of reference numerals in the attached drawings: 1. First column section; 2. Second column section; 3. Third column section; 4. First segment; 5. Second segment; 6. Anchor bolt bracket; 7. Screw rod; 8. Foundation pad; 9. First embedded part; 10. Second embedded part; 11. Angle steel; 12. Rectangular frame; 13. First diagonal brace; 14. First concrete foundation; 15. Fixing nut; 16. Adjusting nut; 17. Adjusting seat; 18. Seat body; 19. Adjusting block; 20. Adjustment... 21. Sectional groove; 22. First plane; 23. First arc surface; 24. Third embedded part; 25. Second diagonal brace; 26. Second concrete foundation; 27. Temporary support rod; 28. First positioning plate; 29. ​​Second positioning plate; 30. Fixing plate; 31. Temporary support frame; 32. Main truss; 33. Upright; 34. Diagonal brace; 35. Steel frame platform; 36. Positioning jig; 37. Positioning column; 38. Jig plate; 39. Clamping plate. Detailed Implementation

[0053] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0059] Example 1

[0060] Reference Figure 1 As shown, this embodiment provides a construction method for steel columns, referring to... Figure 2 As shown, the steel column comprises a first section 1, a second section 2, and a third section 3 connected in sequence. The first section 1 is inclined outwards. The second section 2 includes a first segment 4 inclined in the same direction as the first section 1 and a second segment 5 arranged vertically. The third section 3 is inclined inwards, causing the steel column to bulge outwards. Due to the inclined state of the first section 1, it is necessary to ensure that the first section 1 achieves the designed installation accuracy and maintains its stability after installation during the installation process.

[0061] Reference Figure 1 As shown, the method for constructing this steel column includes the following steps:

[0062] S1. Pour the first concrete foundation 14 and pre-embed anchor bolt brackets 6 in the first concrete foundation 14. The anchor bolt brackets 6 include a plurality of screws 7 extending outward from the first concrete foundation 14.

[0063] Specifically, in step S1, the process of pre-embedding the anchor bolt bracket 6 in the first concrete foundation 14 includes:

[0064] S11. Pour the foundation pad 8, and pre-embed first embedded parts 9 and second embedded parts 10 within the foundation pad 8. The four first embedded parts 9 are arranged in a rectangular shape, and the four second embedded parts 10 are arranged on the outside of the rectangle; its state is as follows. Figure 3 As shown.

[0065] S12. Weld angle steel 11 onto the first embedded part 9 respectively; use angle steel 11 as the base of anchor bolt bracket 6, and adjust the height of anchor bolt bracket 6 by adjusting the length of angle steel 11, thereby adjusting the height of steel column.

[0066] S13. Weld the anchor bolt bracket 6 to the angle steel 11; the anchor bolt bracket 6 includes multiple screws 7 and a rectangular frame 12, the bottom end of the screws 7 is welded with a connecting plate, so that the connecting plate is welded to the angle steel 11, and the rectangular frame 12 is welded to multiple screws 7 in sequence.

[0067] S14. Weld the first diagonal brace 13 onto the second embedded part 10, and weld the first diagonal brace 13 to the rectangular frame 12, so that the first diagonal brace 13 provides diagonal support for the anchor bolt bracket 6; its state is as follows. Figure 4 As shown, the first diagonal brace 13 supports the anchor bolt bracket 6 to ensure the stability of the anchor bolt bracket 6 during the pouring of the first concrete foundation 14 and to prevent displacement during the pouring process. After the first concrete foundation 14 is poured, the screw rod 7 and the rectangular frame 12 are used as reinforcing structures to strengthen the connection between the screw rod 7 and the first concrete foundation 14, thereby ensuring the stability of the steel column after installation.

[0068] S15. Pour the first concrete foundation 14 to an elevation of -10.250m, and reserve some bolts 7 extending outwards from the first concrete foundation 14. Its state is as follows: Figure 5 As shown.

[0069] S2. Install a section of column 1 on the anchor bolt bracket 6, so that the screw 7 passes through the base plate of the section of column 1, and set nuts on the screw 7 that are respectively pressed against both sides of the base plate. Adjust the nuts on each screw 7 so that the section of column 1 tilts outward; its state is as follows. Figure 6 As shown.

[0070] Specifically, refer to Figure 7 As shown, to facilitate the display of the hidden base plate, the nut includes a fixed nut 15 located above the base plate and an adjusting nut 16 located below the base plate; an adjusting seat 17 is provided between the adjusting nut 16 and the base plate; the adjusting seat 17 includes a seat body 18 and an adjusting block 19, the seat body 18 has a light hole for accommodating the screw 7, and the surface of the seat body 18 has an adjusting groove 20, the bottom wall of the adjusting groove 20 being arc-shaped; the adjusting block 19 includes a first plane 21 abutting against the base plate and a first arc surface 22 slidingly engaging with the bottom wall of the adjusting groove 20, so that when the adjusting block 19 slides relative to the bottom wall of the adjusting groove 20, the inclination of the first plane 21 is changed; the process of adjusting the height of the nuts on each screw 7 to tilt one section of column 1 outward includes:

[0071] S21. Tighten the fixing nuts 15 on each screw 7 to leave adjustment space for the base plate;

[0072] S22. Adjust the base plate to the designed height and tilt.

[0073] S23. Tighten each adjusting nut 16 to move each adjusting seat 17 until the first plane 21 of the moving block abuts against the bottom of the base plate;

[0074] S24. Tighten the fixing bolts.

[0075] When adjusting the inclination of column 1, the adjusting block 19 on the adjusting seat 17 is used to support the base plate, increase the supporting area, avoid concentrated force distribution and local damage, and thus avoid column 1 becoming unstable and failing to meet the design requirements for installation accuracy.

[0076] Specifically, a third embedded part 23 is pre-embedded during the pouring of the first concrete foundation 14, positioned at the inner corner of the column section 1. After adjusting the nuts on each screw 7 to tilt the column section 1 outward, a second diagonal brace 24 is installed between the column section 1 and the third embedded part 23. The second diagonal brace 24 supports the column section 1, ensuring its stability.

[0077] S3. Construct a second concrete foundation 25 above the first concrete foundation 14. The second concrete foundation 25 is poured to an elevation of -8.750m, causing the end portion of column 1 to protrude outwards; its condition is referenced... Figure 8 As shown.

[0078] S4. Hoist the second column section 2 to connect it to the exposed end of the first column section 1; corbels are symmetrically connected to both sides of the second column section 2, and temporary support rods 26 are installed between the corbels and the second concrete foundation 25; its state is as follows. Figure 9 As shown.

[0079] Specifically, refer to Figure 10 As shown, the end of the first column 1 is connected to a first positioning plate 27, and the end of the second column 2 is connected to a second positioning plate 28. The first positioning plate 27 and the second positioning plate 28 are aligned, and the first positioning plate 27 and the second positioning plate 28 are respectively bolted to the fixing plate 29.

[0080] S5. Without pouring the outer concrete and without removing the temporary support rod 26, or after pouring the outer concrete at the exposed end of column 1 and the first section 4 of column 2 and removing the temporary support rod 26, hoist column 3 to connect it to the end of column 2, and install a temporary support frame 30 between the top plate of column 3 and the second concrete foundation 25. Its state is as follows: Figure 11 As shown, temporary support frames 30 are used to support the three-section column 3 to ensure the overall stability of the steel column and prevent it from tipping over during construction.

[0081] This embodiment provides a construction method for a steel column, which involves pouring concrete foundations in layers. During the pouring of the first concrete foundation 14, anchor bolt supports 6 are pre-embedded, dividing the steel column into three sections. One section 1 is fixed to the anchor bolt supports 6, and the tilt of the first section 1 is adjusted using screws 7 and nuts to ensure precise adjustment to the designed inclination. The second concrete foundation 25 is then poured, partially exposing the first section 1. The second concrete foundation 25 is used to fix the first section 1, ensuring the stability of its installation. This method guarantees both the installation accuracy and stability of the steel column.

[0082] Example 2

[0083] This embodiment provides a construction method for a station building, referring to... Figure 12 As shown, it includes the following steps:

[0084] T1. Construct the steel columns according to the construction method described in Example 1; after construction, a temporary support frame 30 is installed on the inner side of each steel column, and the arrangement of the temporary support frame 30 is as follows. Figure 13 As shown.

[0085] T2. Hoist the main truss 31, connect the main truss 31 to the three-section column 3, and use the temporary support frame 30 to support the main truss 31;

[0086] Specifically, refer to Figure 14 and Figure 15 As shown, the temporary support frame 30 includes four uprights 32, diagonal braces 33, a steel frame platform 34, and a positioning frame 35. The four uprights 32 are respectively fixed to the second concrete foundation 25 by third embedded parts 23, and multiple diagonal braces 33 are connected between adjacent uprights 32. The steel frame platform 34 is installed on the top of the uprights 32. The positioning frame 35 includes positioning columns 36 fixed to the steel frame platform 34 and frame plates 37 fixed to the positioning columns 36 in a vertical arrangement. When the main truss 31 is pressed onto the frame plate 37, a clamping plate 38 is welded onto the frame plate 37 so that the clamping plate 38 is located on both sides of the main truss 31 to limit the main truss 31.

[0087] T3. Hoist the secondary truss and fix it between the adjacent main truss 31;

[0088] T4. Hoist the members between the secondary trusses to complete the roof installation;

[0089] T5. After the concrete reaches the design strength, unload the temporary support frame 30 and transfer the load of the roof to the top of the column.

[0090] Specifically, when unloading the temporary support frame 30, the frame plate 37 is cut multiple times at the same height, with each cut controlled at 5-10mm, until a section of the frame plate 37 is removed and the roof no longer moves downward. Finally, the remaining temporary support frame 30 is removed.

[0091] The construction method for a station building provided in this embodiment allows for roof construction without waiting for the poured foundation to reach its strength. During construction, the roof is supported by a temporary support frame 30 of the three-section column 3. The steel column itself is not subject to the load of the roof. Once construction is completed and the underlying structure reaches its strength, the load is transferred to the steel column, ensuring that the steel column is not affected by the roof load during construction and shortening the construction period.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A construction method for a steel column, characterized in that, The steel column comprises a first section, a second section, and a third section connected sequentially; the first section is inclined outwards, the second section comprises a first segment inclined in the same direction as the first section and a second segment arranged vertically, and the third section is inclined inwards, causing the steel column to bulge outwards; the construction method includes: S1. Pour the first concrete foundation and pre-embed anchor bolt brackets in the first concrete foundation. The anchor bolt brackets include multiple screws extending outward from the first concrete foundation. S2. Install a column section on the anchor bolt bracket, so that the screw rod passes through the base plate of the column section, and set nuts on the screw rod that are respectively pressed against both sides of the base plate. Adjust the nuts on each screw rod to make the column section tilt outward. S3. Cast a second concrete foundation on top of the first concrete foundation, so that the end part of a column section is exposed outward. S4. Hoist the second column section to connect the exposed end of the second column section to the first column section; corbels are symmetrically connected to both sides of the second column section, and temporary support rods are installed between the corbels and the second concrete foundation. S5. Without pouring the outer concrete and removing the temporary support rods, or after pouring the outer concrete and removing the temporary support rods at the exposed end of one column and the first section of the second column, hoist the third column to connect the ends of the third column and the second column, and install a temporary support frame between the top plate of the third column and the second concrete foundation. The process of pre-embedding anchor bolt supports in the first concrete foundation includes: S11. Pour the foundation pad layer, and pre-embed the first and second embedded parts in the foundation pad layer. Multiple first embedded parts are arranged in a rectangular shape, and multiple second embedded parts are arranged on the outside of the rectangle. S12. Weld angle steel onto the first embedded part respectively; S13. Weld the anchor bolt bracket to the angle steel; the anchor bolt bracket includes multiple screws and a rectangular frame, the bottom end of the screw is welded with a connecting plate, so that the connecting plate is welded to the angle steel, and the rectangular frame is welded to multiple screws in sequence. S14. Weld the first diagonal brace to the second embedded part and weld the first diagonal brace to the rectangular frame so that the first diagonal brace provides diagonal support to the anchor bolt bracket. S15. Pour the first concrete foundation, and reserve some bolts to extend outward from the first concrete foundation; The nuts include a fixed nut located above the base plate and an adjusting nut located below the base plate; an adjusting seat is provided between the adjusting nut and the base plate; the adjusting seat includes a seat body and an adjusting block, the seat body has a light hole for accommodating the screw rods, the surface of the seat body has an adjusting groove, and the bottom wall of the adjusting groove is arc-shaped; the adjusting block includes a first plane abutting against the base plate and a first arc surface that slides with the bottom wall of the adjusting groove, so that the inclination of the first plane changes when the adjusting block slides relative to the bottom wall of the adjusting groove; the process of adjusting the height of the nuts on each screw rod to tilt one section of the column outward includes: S21. Tighten the fixing nuts on each screw to leave adjustment space for the base plate; S22. Adjust the base plate to the designed height and tilt. S23. Tighten each adjusting nut to move each adjusting seat until the first plane of the moving block abuts against the bottom of the base plate; S24. Tighten the fixing bolts.

2. The construction method for a steel column according to claim 1, characterized in that, When pouring the first concrete foundation, a third embedded part is pre-embedded so that the third embedded part is located at the inside corner of a column section; after adjusting the nuts on each screw to make the column section tilt outward, a second diagonal brace is installed between the column section and the third embedded part.

3. The construction method for a steel column according to claim 1, characterized in that, The end of the first column is connected to a first positioning plate, and the end of the second column is connected to a second positioning plate. The first positioning plate and the second positioning plate are aligned and are respectively bolted to the fixing plate.

4. A construction method for a station building, characterized in that, include: T1. Constructing steel columns according to the construction method described in any one of claims 1 to 3; T2. Hoist the main truss, connect the main truss to the three-section column, and use temporary support frames to support the main truss; T3. Hoist the secondary truss and fix it between the adjacent main trusses; T4. Hoist the members between the secondary trusses to complete the roof installation; T5. After the concrete reaches the design strength, unload the temporary support frame and transfer the load of the roof to the top of the column.

5. The construction method for a station building according to claim 4, characterized in that, The temporary support frame includes four uprights, diagonal braces, a steel frame platform, and a positioning jig. The four uprights are fixed to the second concrete foundation by third embedded parts, and multiple diagonal braces connect adjacent uprights. The steel frame platform is installed on the top of the uprights. The positioning jig includes positioning columns fixed to the steel frame platform and jig plates fixed to the positioning columns in a vertical arrangement. After the main truss is pressed onto the jig plate, clamping plates are welded onto the jig plate so that the clamping plates are located on both sides of the main truss to limit the main truss.

6. The construction method for a station building according to claim 5, characterized in that, When unloading the temporary support frame, cut the frame plate multiple times at the same height, controlling the cut amount to 5-10mm each time, until the roof no longer shifts downwards after a section of the frame plate is cut off. Finally, remove the remaining temporary support frame.

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