Asymmetric steel rib large-section stiff column and construction method

Abstract

The invention provides an asymmetric steel rib large-section stiff column and a construction method. The construction method comprises the main construction steps of (1) one-pile-one-column construction, (2) soil body excavation, (3) column foot support pre-burying, (4) steel rib installation and positioning, (5) column foot pouring, (6) column body formwork supporting, (7) bracket formwork supporting and (8) stiff column concrete pouring. The construction method comprises the main construction steps of (1) one-pile-one-column construction, (2) soil body excavation, (3) column foot support pre-burying, (4) steel rib installation and positioning, (5) column foot pouring, (6) column body formwork supporting, (7) bracket formwork supporting and (8) stiff column concrete pouring. The asymmetric steel rib large-section stiff column construction method is wide in applicable section type and good in reinforcing effect, and good technical and economic benefits can be obtained when the asymmetric steel rib large-section stiff column construction method is applied to actual engineering.

Description

Technical Field

[0001] The invention relates to the field of rigid column construction, and in particular to an asymmetric steel frame large-section rigid column and a construction method. Background Art

[0002] Steel-concrete can be made into a combination of various components, replacing traditional reinforced concrete structures and steel structures, and is mainly used in various types of high-rise buildings. Due to its own characteristics, steel-concrete can effectively improve the overall strength and rigidity of the building structure, improve the torsional strength of the steel structure, and enhance the overall durability and fire resistance of the building. In actual construction, the cross-section of the rigid column is usually asymmetric and irregular, and the cross-section types are varied, which increases the difficulty of rigid column construction. In addition, the safety of the rigid column steel frame hoisting is also a key control during the construction process.

[0003] Based on this, the present invention provides a construction method for asymmetric steel frame large-section rigid columns, which solves the problems of formwork support, hoisting and positioning of asymmetric and irregular-section rigid columns. The construction method is applicable to a wide range of cross-section types and has good reinforcement effects. It can achieve good technical and economic benefits when applied to actual projects. Summary of the invention

[0004] The purpose of the present invention is to provide an asymmetric steel frame large-section rigid column and a construction method which are applicable to a wide range of cross-section types, have good reinforcement effects, and can achieve good technical and economic benefits when applied to actual projects.

[0005] In order to solve the above technical problems, the present invention provides a construction method of an asymmetric steel frame large-section rigid column, comprising the following specific steps:

[0006] Step 1, "one pile and one column" construction: pre-drive a steel casing at the pile foundation position and perform hole-forming operations in the steel casing, lower the steel pipe column and the steel cage into the steel casing together, pour concrete into the steel casing through the pouring conduit and form a pile body in the steel casing, cast the steel pipe column and the pile body as one, and fill the over-pouring area on the pile body with flexible materials or bulk materials;

[0007] Step 2: Soil excavation: excavate the soil to the bottom plate elevation;

[0008] Step 3: Pre-embed column foot brackets: Place a steel skeleton at the construction position of the base plate, bury the rigid column foot into the steel skeleton of the base plate, cast the base plate, reserve a post-casting groove when casting the base plate, and cast the rigid column foot and the base plate as one;

[0009] Step 4: Steel frame installation and positioning: The rigid steel frame is hoisted to the post-casting trough of the base plate by the lifting equipment, and the lower end of the rigid steel frame is temporarily fixed to the rigid column foot, and the inclination angle of the rigid steel frame is adjusted by the cable wind rope. After the angle adjustment of the rigid steel frame is completed, it is temporarily fixed to the vertical load-bearing wall by the steel tie rod, one end of the steel tie rod is connected to the rigid steel frame, and the other end is connected to the vertical load-bearing wall;

[0010] Step 5: Casting of column foot: After the installation and positioning of the rigid steel frame is completed, cast the rigid column foot and cast the rigid column foot together with the lower end of the rigid steel frame;

[0011] Step 6: Column body formwork support: When the cross-section of the rigid column is circular, a formwork is set on the outside of the rigid steel frame. The formwork is a cylindrical column formwork. Multiple arc supports are set at intervals along the height of the cylindrical column formwork to reinforce the cylindrical column formwork. A steel pipe frame is built on the outside of the cylindrical column formwork. An inclined rod corresponding to the arc support is set on the steel pipe frame. The arc support is welded to the inclined rod of the steel pipe frame.

[0012] When the rigid column is of a special-shaped section, a template is set on the outside of the rigid steel frame, and the template is a special-shaped column template. A supplementary template is added on the outside of the hypotenuse of the special-shaped column template so that the whole of the special-shaped column template is a regular section, and the section of the supplementary template is a regular rectangle; a wedge-shaped support is set between the supplementary template and the special-shaped column template, and wooden I-beams are arranged at equal intervals on the outside of the special-shaped column template. The wooden I-beams are reinforced by double-jointed channel steel hoops, and the ends of adjacent double-jointed channel steel hoops are connected by oblique tension screws;

[0013] When the rigid column is an inclined column, a tie node is set at the end of the rigid steel frame, and the two ends of the hanging steel plate on the tie node are connected to the hanger rod. A template is set on the outside of the rigid steel frame, and one end of the hanger rod is connected to the template; the template is connected and reinforced horizontally by a tie screw, and the tie screw crosses the template;

[0014] When the formwork is reinforced without tension screws, square and round buckles are set at equal intervals along the height direction of the formwork, with the outer sides of the square and round buckles close to the wooden slats, and the outer sides of the wooden slats are supported by support frames;

[0015] Step 7, corbel formwork support: the formwork includes a column formwork and a corbel formwork, the corbel formwork is arranged on both sides of the column formwork, wooden slats are arranged vertically on the outside of the corbel formwork, and steel pipe hoops and tension bolt reinforcement hoops are arranged horizontally on the outside of the corbel formwork, and the corbel formwork is reinforced by the steel pipe hoops and tension bolt reinforcement hoops;

[0016] Step 8: Pour concrete for rigid columns.

[0017] Preferably, in step 3, the rigid column foot comprises an upper anchor plate, an anchor rod, a lower anchor plate, and a nut. The lower end of the anchor rod is fixedly arranged on the lower anchor plate, a stiffening plate is arranged between the lower end of the anchor rod and the lower anchor plate, the upper end of the anchor rod passes through the upper anchor plate, and the upper end of the anchor rod is fastened to the upper anchor plate by a nut.

[0018] Preferably, in step three, corrugated anti-shear grooves are provided on the side and bottom surfaces of the post-casting trough.

[0019] Preferably, in step 4, a temporary support is provided on the base plate, and the upper end of the rigid steel frame is supported on the temporary support.

[0020] Preferably, in step six, the support frame is composed of vertical steel pipes, horizontal bracing steel pipes, and diagonal bracing steel pipes. The vertical steel pipes and the horizontal bracing steel pipes are arranged in a horizontal and vertical staggered manner, and the diagonal bracing steel pipes are connected between the vertical steel pipes and the horizontal bracing steel pipes.

[0021] Preferably, in step six, the tie node is composed of a hanging steel plate, a vertical steel column, a transverse connecting rod, and an oblique connecting rod. The vertical steel column is fixed on the hanging steel plate, and the vertical steel column is used to support the hanging steel plate; the transverse connecting rod and the oblique connecting rod are arranged between adjacent vertical steel columns, and the outer side of the formwork is supported by diagonal steel pipes and steel pipe brackets.

[0022] Preferably, in step six, the arc support is an arc-shaped plate structure, the arc support is fitted with the outer side of the cylindrical column template, and four arc supports are arranged on the outer side of the same height surface on the cylindrical column template.

[0023] An asymmetric steel frame large-section rigid column is constructed by an asymmetric steel frame large-section rigid column construction method.

[0024] The beneficial effects of the present invention are:

[0025] (1) The present invention adopts the "one pile and one column" steel frame reverse construction technology, and the steel pipe column and the pile foundation steel cage are simultaneously lowered and poured, and at the same time, flexible or bulk materials are backfilled in the over-filling area of ​​the pile foundation, thereby improving the construction efficiency of the rigid column.

[0026] (2) The present invention adopts the technology of pre-embedding asymmetric steel column base brackets, and by pre-embedding the column base brackets and setting anti-shear grooves, the construction quality of the rigid column is improved.

[0027] (3) The present invention adopts asymmetric steel frame installation and positioning technology, and sets up temporary brackets to assist in supporting the rigid steel frame, thereby improving the safety of rigid column construction.

[0028] (4) The present invention arranges arc supports to reinforce the circular column, thereby improving the construction quality of the circular column cross-section reinforcement.

[0029] (5) The present invention solves the problem of supporting special-section formwork by adding wedge-shaped supports to form a regular section.

[0030] (6) The present invention solves the problem of supporting the inclined column formwork by setting tie nodes and combining diagonal bracing steel pipes to form a bracing combination effect on the inclined column formwork.

[0031] (7) The present invention adopts square and round buckles to replace the tension screws to reinforce the rigid column formwork, thereby improving the construction quality of the rigid column.

[0032] (8) The present invention uses steel pipe hoops and tension bolt reinforcement hoops to reinforce the corbel formwork, thereby improving the support quality of the corbel formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the "one pile and one column" steel frame reverse construction.

[0034] Figure 2 This is a schematic diagram of the pre-embedded construction of the rigid column base.

[0035] Figure 3 It is a schematic diagram of the column base bracket structure.

[0036] Figure 4 This is a schematic diagram of steel frame installation and positioning construction.

[0037] Figure 5 It is a schematic diagram of circular cross-section rigid column formwork support.

[0038] Figure 6 It is a schematic diagram of the support of special-section rigid column formwork.

[0039] Figure 7 It is a schematic diagram of inclined rigid column formwork support.

[0040] Figure 8 It is a schematic diagram of the nodule structure.

[0041] Fig. 9 It is the plan view of the formwork reinforcement without tension bolts.

[0042] Fig.10 This is the elevation drawing of the formwork reinforcement without tension bolts.

[0043] Fig.11 This is a schematic diagram of the formwork support at the corbel area.

[0044] Fig.12 It is an AA cross-section view.

[0045] Fig.13 This is a schematic diagram of the construction effect of rigid columns.

[0046] In the figure: 1-casting conduit; 2-steel casing; 3-overcasting area; 4-pile body; 5-reinforcement cage; 6-flexible material or bulk material; 7-steel pipe column; 8-rigid column foot; 9-corrugated shear groove; 10-base plate; 11-upper anchor plate; 12-anchor rod; 13-lower anchor plate; 14-nut; 15-stiffening plate; 16-rigid steel skeleton; 17-temporary support; 18-cable wind rope; 19-steel tie rod; 20-vertical load-bearing wall; 21-diagonal rod; 22-arc support; 23-steel pipe rack ; 24-formwork; 25-wedge-shaped support; 26-double-piece channel steel clamp; 27-wooden I-beam; 28-tension screw; 29-tension node; 30-suspender; 31-steel pipe bracket; 32-diagonal bracing steel pipe; 33-hanging steel plate; 34-transverse connecting rod; 35-diagonal connecting rod; 36-vertical steel column; 37-square and round buckle; 38-wooden slats; 39-transverse bracing steel pipe; 40-vertical steel pipe; 41-fixing pin; 42-tension bolt reinforcement clamp; 43-steel pipe clamp, 44-supplementary formwork. DETAILED DESCRIPTION

[0047] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0048] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0049] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0050] like Figure 1-13 The present invention provides a method for constructing an asymmetric steel frame large-section rigid column, comprising the following construction steps:

[0051] Step 1, "one pile and one column" construction: Use the reverse method to construct the rigid column. Drive the steel casing 2 into the pile foundation position in advance and perform hole-making operations in the steel casing 2. Lower the steel pipe column 7 and the steel cage 5 together to the designated position in the steel casing 2. The steel cage 5 is located at the bottom of the steel pipe column 7. Pour concrete into the steel casing 2 through the pouring conduit 1 and form the pile body 4 in the steel casing 2. The steel pipe column 7 and the pile body 4 are cast as one, forming a "one pile and one column" vertical load-bearing structure. The upper over-pouring area 3 of the pile body 4 is filled with flexible material or bulk material 6.

[0052] Step 2: Soil excavation: After the "one pile and one column" construction is completed, the soil is excavated to the 10th elevation of the bottom plate.

[0053] Step three, pre-embed the column foot support: place a steel skeleton at the construction position of the base plate 10, bury the rigid column foot 8 into the steel skeleton of the base plate 10, cast the base plate 10, and the cast base plate 10 is located at the upper end of the steel pipe column 7. When casting the base plate 10, reserve a post-casting groove, and set a corrugated shear-resistant groove 9 on the side and bottom of the post-casting groove; the rigid column foot 8 and the base plate 10 are cast as one. Among them, the rigid column foot 8 includes an upper anchor plate 11, an anchor rod 12, a lower anchor plate 13, and a nut 14. The lower end of the anchor rod 12 is fixedly set on the lower anchor plate 13, and a stiffening plate 15 is provided between the lower end of the anchor rod 12 and the lower anchor plate 13. The upper end of the anchor rod 12 passes through the upper anchor plate 11, and the upper end of the anchor rod 12 is fastened to the upper anchor plate 11 by a nut 14.

[0054] Step 4: Steel frame installation and positioning: The rigid steel frame 16 is hoisted into the post-casting trough of the bottom plate 10 by a lifting device, and the lower end of the rigid steel frame 16 is temporarily fixed to the rigid column foot 8. The inclination angle of the rigid steel frame 16 is adjusted by a cable wind rope 18, one end of which is connected to the rigid steel frame 16, and the other end is connected to the vertical load-bearing wall 20. After the angle adjustment of the rigid steel frame 16 is completed, it is temporarily fixed to the vertical load-bearing wall 20 by a steel tie rod 19, one end of which is connected to the rigid steel frame 16, and the other end is connected to the vertical load-bearing wall 20; a temporary bracket 17 is set in the post-casting trough, and the upper end of the rigid steel frame 16 is supported by the temporary bracket 17.

[0055] Step 5: Casting of column foot: After the rigid steel frame 16 is installed and positioned, cast the rigid column foot 8 , and cast the rigid column foot 8 and the lower end of the rigid steel frame 16 together.

[0056] Step 6: Support of column formwork: When the cross section of the rigid column is circular, a formwork 24 is set on the outside of the rigid steel frame 16. The formwork 24 is a cylindrical column formwork. Multiple arc supports 22 are set at intervals along the height of the cylindrical column formwork to reinforce the cylindrical column formwork. The arc supports 22 are arc-shaped plate structures, and the arc supports 22 fit the outside of the cylindrical column formwork. Four arc supports 22 are set on the outside of the same height surface on the cylindrical column formwork, and a steel pipe frame 23 is built on the outside of the cylindrical column formwork. The steel pipe frame 23 is provided with an inclined rod 21 corresponding to the arc support 22, and the arc support 22 is welded to the inclined rod 21 of the steel pipe frame 22.

[0057] When the rigid column has a special-shaped cross-section, a template 24 is set on the outside of the rigid steel frame 16. The template 24 is a special-shaped column template. A supplementary template 44 is added to the outside of the hypotenuse of the special-shaped column template so that the whole special-shaped column template has a regular cross-section. The cross-section of the supplementary template 44 is a regular rectangle. A wedge-shaped support 25 is set between the supplementary template 44 and the special-shaped column template. Wooden I-beams 27 are arranged at equal intervals on the outside of the special-shaped column template. The wooden I-beams 27 are reinforced by double-jointed channel steel hoops 26. The wooden I-beams 27 arranged in the same straight line are connected to the same double-jointed channel steel hoop 26, and the ends of adjacent double-jointed channel steel hoops 26 are connected by oblique tension screws 28.

[0058] When the rigid column is an inclined column, a tie node 29 is provided at the end of the rigid steel frame 16, and the two ends of the hanging steel plate 33 on the tie node 29 are connected to the hanging rod 30. A template 24 is provided on the outside of the rigid steel frame 16, and one end of the hanging rod 30 is connected to the template 24. The tie node 29 is composed of a hanging steel plate 33, a vertical steel column 36, a transverse connecting rod 34, and an oblique connecting rod 35. The vertical steel column 36 is fixed on the hanging steel plate 33, and the vertical steel column 36 is used to support the hanging steel plate 33; the transverse connecting rod 34 and the oblique connecting rod 35 are arranged between adjacent vertical steel columns 36, and the outer side of the template 24 is supported by the diagonal bracing steel pipe 32 and the steel pipe bracket 31; the template 24 is connected and reinforced laterally by the tie screw 28, and the tie screw 28 crosses the template 24;

[0059] When the template 24 is reinforced without tensioning screws, square buckles 37 are arranged at equal intervals along the height direction of the template 24. The square buckles 37 are arranged around the outside of the template 24. The square buckles 37 are connected by fixing pins 41, and the fixing pins 41 are inserted into the reserved pin holes for fixing. The outside of the square buckles 37 is close to the wooden slats 38, and the outside of the wooden slats 38 is supported by a support frame. The support frame is composed of vertical steel pipes 40, horizontal bracing steel pipes 39, and diagonal bracing steel pipes 32. The vertical steel pipes 40 and the horizontal bracing steel pipes 39 are arranged in a horizontal and vertical staggered manner, and the diagonal bracing steel pipes 32 are connected between the vertical steel pipes 40 and the horizontal bracing steel pipes 39.

[0060] Step seven, corbel formwork support: the formwork 24 includes a column formwork and a corbel formwork. The corbel formwork is arranged on both sides of the column formwork. Wooden slats 38 are arranged vertically on the outer side of the corbel formwork. Steel pipe hoops 43 and tension bolt reinforcement hoops 42 are arranged horizontally on the outer side of the corbel formwork. The corbel formwork is reinforced by the steel pipe hoops 43 and tension bolt reinforcement hoops 42.

[0061] Step 8: Pour concrete into the formwork 24 to form a rigid column after the concrete hardens. Finally, the formwork 24 is removed.

[0062] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A construction method for an asymmetric steel frame large-section rigid column, characterized in that: The specific steps include: Step 1, "one pile and one column" construction: a steel casing (2) is driven into the pile foundation position in advance and a hole forming operation is performed in the steel casing (2), a steel pipe column (7) and a steel cage (5) are lowered into the steel casing (2), concrete is poured into the steel casing (2) through a pouring conduit (1) and a pile body (4) is formed in the steel casing (2), the steel pipe column (7) and the pile body (4) are cast as one, and the upper over-pouring area (3) of the pile body (4) is filled with a flexible material or a bulk material (6); Step 2: soil excavation: excavating the soil to the elevation of the bottom plate (10); Step 3: Pre-embed the column foot support: place a steel frame at the construction position of the base plate (10), embed the rigid column foot (8) into the steel frame of the base plate (10), cast the base plate (10), reserve a post-casting groove when casting the base plate (10), and cast the rigid column foot (8) and the base plate (10) as a whole; Step 4: Steel frame installation and positioning: The rigid steel frame (16) is hoisted to the post-casting groove of the base plate (10) by a lifting device, and the lower end of the rigid steel frame (16) is temporarily fixed to the rigid column foot (8), and the inclination angle of the rigid steel frame (16) is adjusted by a cable wind rope (18). After the inclination angle of the rigid steel frame (16) is adjusted, it is temporarily fixed to the vertical load-bearing wall (20) by a steel tie rod (19), one end of the steel tie rod (19) is connected to the rigid steel frame (16), and the other end is connected to the vertical load-bearing wall (20); Step 5: Casting of column foot: After the rigid steel frame (16) is installed and positioned, the post-casting trough is cast, and the post-casting trough and the lower end of the rigid steel frame (16) are cast as one; Step 6, column body formwork support: when the cross section of the rigid column is circular, a formwork (24) is arranged on the outside of the rigid steel frame (16), the formwork (24) is a cylindrical column formwork, a plurality of arc supports (22) are arranged at intervals along the height of the cylindrical column formwork to reinforce the cylindrical column formwork, a steel pipe frame (23) is built on the outside of the cylindrical column formwork, an oblique rod (21) corresponding to the arc support (22) is arranged on the steel pipe frame (23), and the arc support (22) is welded to the oblique rod (21) of the steel pipe frame (22); When the rigid column is of a special-shaped cross-section, a template (24) is arranged on the outside of the rigid steel frame (16), the template (24) is a special-shaped column template, a supplementary template (44) is added on the outside of the hypotenuse of the special-shaped column template so that the whole of the special-shaped column template is a regular cross-section, the cross-section of the supplementary template (44) is a regular rectangle, a wedge-shaped support (25) is arranged between the supplementary template (44) and the special-shaped column template, wooden I-beams (27) are arranged at equal intervals on the outside of the special-shaped column template, the wooden I-beams (27) are reinforced by double-jointed channel steel hoops (26), and the ends of adjacent double-jointed channel steel hoops (26) are connected by oblique tension screws (28); When the rigid column is an inclined column, a tie node (29) is provided at the end of the rigid steel frame (16), and the two ends of the hanging steel plate (33) on the tie node (29) are connected to the hanging rod (30), and a template (24) is provided on the outer side of the rigid steel frame (16), and one end of the hanging rod (30) is connected to the template (24); the template (24) is connected and reinforced laterally by a tie screw (28), and the tie screw (28) crosses the template (24); When the template (24) is reinforced without tension screws, square and round buckles (37) are arranged at equal intervals along the height direction of the template (24), the outer sides of the square and round buckles (37) are close to the wooden slats (38), and the outer sides of the wooden slats (38) are supported by support frames; Step 7, corbel formwork support: wooden slats (38) are vertically arranged on the outer side of the corbel formwork, and steel pipe hoops (43) and tension bolt reinforcement hoops (42) are horizontally arranged on the outer side of the corbel formwork, and the corbel formwork is reinforced by the steel pipe hoops (43) and tension bolt reinforcement hoops (42); Step 8: Pour concrete for rigid columns.

2. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step three, the rigid column foot (8) includes an upper anchor plate (11), an anchor rod (12), a lower anchor plate (13), and a nut (14); the lower end of the anchor rod (12) is fixedly arranged on the lower anchor plate (13); a stiffening plate (15) is arranged between the lower end of the anchor rod (12) and the lower anchor plate (13); the upper end of the anchor rod (12) passes through the upper anchor plate (11); and the upper end of the anchor rod (12) is fastened to the upper anchor plate (11) by a nut (14).

3. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step three, corrugated anti-shear grooves (9) are provided on the side and bottom surfaces of the post-casting trough.

4. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step 4, a temporary support (17) is arranged on the bottom plate (10), and the upper end of the rigid steel frame (16) is supported on the temporary support (17).

5. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step six, the support frame is composed of vertical steel pipes (40), horizontal bracing steel pipes (39), and diagonal bracing steel pipes (32). The vertical steel pipes (40) and the horizontal bracing steel pipes (39) are arranged in a horizontal and vertical staggered manner, and the diagonal bracing steel pipes (32) are connected between the vertical steel pipes (40) and the horizontal bracing steel pipes (39).

6. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step six, the tie node (29) is composed of a hanging steel plate (33), a vertical steel column (36), a transverse connecting rod (34), and an oblique connecting rod (35); the vertical steel column (36) is fixed on the hanging steel plate (33), and the vertical steel column (36) is used to support the hanging steel plate (33); the transverse connecting rod (34) and the oblique connecting rod (35) are arranged between adjacent vertical steel columns (36), and the outer side of the template (24) is supported by the diagonal steel pipe (32) and the steel pipe bracket (31).

7. The construction method of asymmetric steel frame large cross-section rigid column according to claim 1 is characterized in that: In step six, the arc support (22) is an arc-shaped plate structure, and the arc support (22) fits the outer side of the cylindrical column template. Four arc supports (22) are arranged on the outer side of the same height surface on the cylindrical column template.

8. An asymmetric steel frame large cross-section rigid column, characterized in that: The asymmetric steel frame large-section rigid column is constructed by the construction method of any one of claims 1-7.

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