A fiber-reinforced concrete composite column, a mold, and a construction method

Abstract

A fiber-reinforced concrete composite column, a mold, and a construction method are disclosed. The method includes: casting an integrally formed composite column inside an outer steel mold; the composite column includes a corrugated pipe concentrically arranged with the outer steel mold, a first reinforcing cage assembly inside the corrugated pipe, and a second reinforcing cage assembly between the corrugated pipe and the outer steel mold. The corrugated pipe, in conjunction with the first and second reinforcing cage assemblies, enables the composite column to possess ultimate tensile strain, while also exhibiting stronger compressive strength, enhancing overall support, and providing seismic resistance. Furthermore, the mold facilitates demolding, alters the surface density during setting, and provides a rough surface to the composite column for easier construction. Additionally, this construction method yields a fiber-reinforced concrete composite column with high-strength support, high compressive strength, and ultimate tensile strain.

Description

Technical fields:

[0001] This invention relates to the field of fiber-reinforced concrete composite column technology, and particularly to a fiber-reinforced concrete composite column, a mold, and a construction method. Background technology:

[0002] Fiber-reinforced concrete is a general term for composite materials composed of fibers and cementitious materials (cement paste, mortar, or concrete). The main disadvantages of cement paste, mortar, and concrete are low tensile strength, low ultimate elongation, and brittleness. Adding fibers, which have high tensile strength, high ultimate elongation, and good alkali resistance, can overcome these disadvantages. Cement-based composite materials composed of cement paste, mortar, or concrete as the matrix and fibers as the reinforcing material are called fiber-reinforced concrete. Fibers can control the further development of cracks in the matrix concrete, thereby improving crack resistance. Due to the high tensile strength and elongation of fibers, the tensile, flexural, and impact strength, as well as elongation and toughness of concrete, are improved. The main types of fiber-reinforced concrete include asbestos cement, steel fiber concrete, glass fiber concrete, polypropylene fiber concrete, carbon fiber concrete, plant fiber concrete, and high-modulus synthetic fiber concrete.

[0003] Columns combining fiber-reinforced concrete, steel pipes, and reinforcing cages are a type of highly efficient composite component that has emerged in recent years. Through the combined effect, construction time is significantly shortened. The higher the yield strength of the steel, the higher the load-bearing capacity of the column. However, in the current manufacturing process of composite columns, the outer walls are all flat. Composite columns used for building support require the application of tiles or a smooth coating to the exterior. Existing composite columns have low plaster retention, making them prone to mortar falling off.

[0004] Furthermore, due to the inherent brittleness of concrete, its tensile, shear, and flexural strengths are all relatively low, and its bond performance with steel is poor. This results in composite columns with low strength, weakened compressive strength, and an overall lack of ultimate tensile strength to withstand earthquakes. Summary of the Invention:

[0005] In view of this, this application proposes a fiber-reinforced concrete composite column, a mold, and a construction method, which uses a corrugated pipe combined with two steel cages to achieve the ultimate tensile strain of the composite column, while also having stronger compressive strength, enhancing the overall support effect, and possessing seismic resistance.

[0006] In a first aspect, a fiber-reinforced concrete composite column includes a composite column body integrally cast inside an outer steel mold; the composite column body includes a corrugated pipe concentrically arranged with the outer steel mold, a first reinforcing cage assembly being disposed inside the corrugated pipe, and a second reinforcing cage assembly being disposed between the outside of the corrugated pipe and the outer steel mold; wherein...

[0007] The first reinforcing cage assembly includes: an outer vertical reinforcing ring concentrically arranged with the corrugated pipe; the outer vertical reinforcing ring is connected to a group of horizontal reinforcing bars for pressing against the inner wall of the corrugated pipe, and the group of horizontal reinforcing bars is arranged at equal intervals along the height direction of the corrugated pipe; any two adjacent groups of horizontal reinforcing bars are connected by a first diagonal bar distributed in a figure-eight pattern, and a first compressive reinforcement cage is connected at the internal angle between the first diagonal bar and the group of horizontal reinforcing bars;

[0008] The second steel cage assembly includes: a vertical reinforcement frame connected to the periphery of the corrugated pipe; the vertical reinforcement frame is connected along the height direction with a plurality of anti-compression ribs for resisting the troughs and crests of the corrugated pipe, and a second diagonal rib is connected between any two adjacent anti-compression ribs, and a second compressive reinforcement cage is connected at the internal angle between the second diagonal rib and the anti-compression rib.

[0009] After the composite column is demolded from the outer steel mold, its outer surface forms a rough surface with multiple depressions.

[0010] In one specific implementation scheme, both ends of each group of transverse ribs press against the internal crests of the corrugated pipe.

[0011] In one specific implementation, a central vertical rib ring is concentrically arranged inside the outer vertical rib ring, and the outer vertical rib ring and the central vertical rib ring are connected by the horizontal rib group.

[0012] In one specific implementation scheme, each group of transverse ribs includes multiple transverse ribs of different lengths, and the two ends of each transverse rib abut against the opposite parts of the inner wall crest of the corrugated pipe.

[0013] In one specific implementation scheme, the first diagonal reinforcement is connected between any two or three horizontal reinforcements on the same vertical line.

[0014] In one specific implementation, the first compression-resistant cage is connected in a ring at the corresponding internal angle.

[0015] In one specific implementation, the anti-compression rib includes: a first horizontal rib connecting the vertical rib frame and the crest of the corrugated pipe outer wall, and a second horizontal rib connecting the vertical rib frame and the trough of the corrugated pipe outer wall;

[0016] The second compressive reinforcement cage is connected in a ring or a rectangle at the corresponding internal angle.

[0017] In one specific implementation scheme, the vertical cross-sections of both the first and second compression-resistant cages are triangular.

[0018] In this invention, the corrugated pipe, in conjunction with the first and second steel cage assemblies, enables the composite column to possess ultimate tensile strain, while also enhancing compressive strength, thereby improving the overall support effect and providing seismic resistance.

[0019] Secondly, a mold includes: an outer steel mold;

[0020] The outer steel mold has two separate hinged mold bodies, which are connected and fixed together by locking components;

[0021] Each mold has a hollow pressurizing cavity, and the inner wall of each mold is slidably provided with multiple protrusions that communicate with the hollow pressurizing cavity; the hollow pressurizing cavity is connected to the pressurizing assembly.

[0022] In this invention, the use of this mold facilitates demolding, changes the surface density during solidification, and gives the composite column a rough surface for easier construction.

[0023] Thirdly, a construction method for fiber-reinforced concrete composite columns includes the following steps:

[0024] Step 1: Select an outer steel mold of appropriate specifications, and lock and fix the outer steel mold vertically.

[0025] Step 2: Tie the second steel cage assembly to the outer wall of the corrugated pipe, and after the binding is completed, hoist the second steel cage assembly and the corrugated pipe into the inner position of the outer steel formwork, so that the distance between the outer side of the second steel cage assembly and the inner wall of the outer steel formwork is equal.

[0026] Step 3: Tie the first steel cage assembly, and after tying, hoist it into the interior of the corrugated pipe and place it concentrically with the corrugated pipe.

[0027] Step 4: Check whether the first and second steel cage assemblies are in the correct positions. If they are in the correct positions, pour fiber-reinforced concrete into the corrugated pipe and between the corrugated pipe and the outer steel formwork.

[0028] Step 5: After pouring, pressurize the hollow pressure cavity of the outer steel mold through the pressure-pressurizing component, so that the protrusion extends into the concrete.

[0029] Step 6: After the fiber concrete has solidified, the internal gas of the hollow pressurized cavity is released, the protrusions retract and reset, and the outer steel mold is removed, so that the outer surface of the fiber concrete composite column has a rough surface.

[0030] In this invention, a fiber-reinforced concrete composite column with high strength support, high compressive strength, and ultimate tensile strain is obtained according to the above method. Attached image description:

[0031] Appendix Figure 1This is a structural schematic diagram of the first embodiment of the fiber-reinforced concrete composite column provided by the present invention;

[0032] Appendix Figure 2 This is a structural schematic diagram of the second embodiment of the fiber-reinforced concrete composite column provided by the present invention;

[0033] Appendix Figure 3 This is a schematic diagram of the cross-sectional structure of the fiber-reinforced concrete composite column provided by the present invention;

[0034] Appendix Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0035] Appendix Figure 5 This is a top view of the first steel cage assembly provided by the present invention;

[0036] Appendix Figure 6 This is a schematic diagram of the structure of the mold provided by the present invention;

[0037] Appendix Figure 7 This is a flowchart of the construction method for fiber-reinforced concrete composite columns provided by the present invention.

[0038] In the picture:

[0039] Composite column-100, first steel cage assembly-110, outer vertical reinforcement ring-111, central vertical reinforcement ring-112, horizontal reinforcement-113, first diagonal reinforcement-114, first compressive reinforcement cage-115, second steel cage assembly-120, vertical reinforcement frame-121, first horizontal reinforcement-122, second horizontal reinforcement-123, second compressive reinforcement cage-124, second diagonal reinforcement-125, rough surface-130;

[0040] Corrugated pipe-200;

[0041] Outer steel mold-300, connecting shaft-310, protruding part-320, protruding edge plate-330, locking part-340;

[0042] Pressurization component-400, connecting pipe-410. Detailed implementation method:

[0043] See also Figure 1-2 , Figure 1This is a structural schematic diagram of the first and second embodiments of the fiber-reinforced concrete composite column provided by the present invention. The fiber-reinforced concrete composite column includes a composite column 100 integrally cast inside an outer steel mold 300. In the first embodiment of this application, the outer steel mold 300 is a cylindrical mold, thus the composite column 100 in the first embodiment is a cylindrical column. In the second embodiment of this application, the outer steel mold 300 is a rectangular mold, and the cast composite column 100 is a rectangular column. The cylindrical and rectangular columns are selectively installed for different application scenarios. The corrugated pipes 200 and the reinforcing cage inside are structurally identical. Both the cylindrical and rectangular composite columns 100 have a rough surface 130 on their outer surface, which facilitates increasing the amount of mortar applied when leveling to a smooth surface later. The cylindrical composite column 100 is described in detail here.

[0044] refer to Figure 3 , Figure 3 This is a schematic cross-sectional view of the fiber-reinforced concrete composite column provided in this embodiment. The composite column 100 includes a corrugated pipe 200 concentrically arranged with the outer steel mold 300. A first reinforcing cage assembly 110 is disposed inside the corrugated pipe 200, and a second reinforcing cage assembly 120 is disposed between the corrugated pipe 200 and the outer steel mold 300. By using the first and second reinforcing cage assemblies 110 and 120 in conjunction with the corrugated pipe 200 to pour fiber-reinforced concrete, the ultimate tensile strain of the overall composite column 100 can be improved. The arrangement of the first and second reinforcing cages enhances the overall compressive strength of the composite column 100, ensuring high seismic performance and providing strong support. This results in better stability when applied to bridge support, building support, and other fields. Furthermore, the composite column 100 exhibits strong crack resistance.

[0045] In specific settings, combine Figure 4 As shown, the first reinforcing cage assembly 110 includes: an outer vertical reinforcing ring 111 concentrically arranged with the corrugated pipe 200; a central vertical reinforcing ring 112 concentrically arranged inside the outer vertical reinforcing ring 111; the outer vertical reinforcing ring 111 and the central vertical reinforcing ring 112 are connected by a horizontal reinforcing bar group. The first reinforcing cage assembly is formed by binding the cylindrical shape of the corrugated pipe 200.

[0046] The outer vertical reinforcing ring 111 comprises multiple vertical reinforcing bars of the same height as the corrugated pipe 200, arranged in a cylindrical shape. Reinforcing bar rings are layered and tied along the height of each vertical reinforcing bar, forming the complete outer vertical reinforcing ring 111. The central vertical reinforcing ring 112 has the same structure as the outer vertical reinforcing ring 111, but its diameter is smaller than that of the outer vertical reinforcing ring 111. Simultaneously, horizontal reinforcing bar groups for pressing against the inner wall of the corrugated pipe 200 are connected to the outer vertical reinforcing ring 111, and multiple groups of horizontal reinforcing bars are evenly spaced along the height of the corrugated pipe 200. Figure 5 As shown, each group of horizontal ribs includes multiple horizontal ribs 113 of varying lengths. Both ends of each horizontal rib 113 press against the opposite portions of the inner wall crests of the corrugated pipe 200. Each horizontal rib 113 presses against the inner wall of the corrugated pipe 200 and is tied to the outer vertical rib ring 111. Simultaneously, ties are made at the positions where the horizontal ribs 113 overlap with the central vertical rib ring 112, thus connecting the outer vertical rib ring 111 and the central vertical rib ring 112.

[0047] Simultaneously, any two adjacent groups of horizontal reinforcing bars are connected by first diagonal reinforcing bars 114 arranged in a figure-eight pattern, and a first compressive strength cage 115 is connected at the internal angle between the first diagonal reinforcing bar 114 and the horizontal reinforcing bar group. The vertical cross-section of the first compressive strength cage 115 is triangular, and during the binding process, the first compressive strength cages 115 of the same height are connected in a ring at the internal angle. Specifically, the first diagonal reinforcing bars 114 are connected between any two or three horizontal reinforcing bars 113 on the same vertical line. Figure 4 The example shows that the first diagonal rib 114 passes through the three horizontal ribs 113 in a figure-eight shape and is then tied and connected accordingly. An internal angle is formed between the first diagonal rib 114 and the middle horizontal rib 113. By binding the arc-shaped first compressive rib cage 115 at the internal angle, the compressive strength of the internal angle is improved.

[0048] Furthermore, the second reinforcing cage assembly 120 in this application includes a vertical reinforcing frame 121 connected to the periphery of the corrugated pipe 200. The vertical reinforcing frame 121 is generally cylindrical or rectangular, and is selectively manufactured to accommodate different shapes of the combined column 100. When the combined column 100 is cylindrical, the vertical reinforcing frame 121 is a cylindrical reinforcing frame with a diameter larger than that of the corrugated pipe 200. The height of the vertical reinforcing frame 121 is the same as the height of the corrugated pipe 200, and the vertical reinforcing frame 121 and the corrugated pipe 200 are concentrically positioned to ensure that the combined column 100 possesses ultimate tensile strain.

[0049] The vertical reinforcement frame 121 is connected along its height by multiple anti-compression ribs for resisting the troughs and crests of the corrugated pipe 200. These anti-compression ribs include: a first horizontal rib 122 connecting the vertical reinforcement frame 121 to the crest of the corrugated pipe 200's outer wall, and a second horizontal rib 123 connecting the vertical reinforcement frame 121 to the trough of the corrugated pipe 200's outer wall. A second diagonal rib 125 connects any adjacent first horizontal rib 122 and second horizontal rib 123. When the combined column 100 is cylindrical, multiple first and second horizontal ribs 123 are arranged in a ring, and steel reinforcement rings are tied between the first horizontal ribs 122 or second horizontal ribs 123 in the same layer to enhance connection stability. The steel reinforcement rings are tied close to the outer wall of the corrugated pipe 200. A second compressive strength cage 124 is tied at the internal angle between the second diagonal rib 125 and the first horizontal rib 122. The vertical cross-section of the second compressive strength cage 124 is triangular. The first compression-resistant cage 115 is set in a ring or rectangle according to the shape to be processed, so that the combined column 100 has a higher ultimate tensile strain, enhances crack resistance, and ensures a higher support effect, so that the whole has a higher seismic resistance.

[0050] Simultaneously, the cylindrical vertical rib frame 121 matches the cylindrical mold, ensuring consistent gaps and achieving positioning of the corrugated pipe 200. When the combined column 100 is rectangular, the vertical rib frame 121 is also rectangular overall, with the extension directions of the first horizontal rib 122 and the second horizontal rib 123 remaining unchanged. The vertical rib frame 121 can be matched with the rectangular mold to achieve positioning of the corrugated pipe 200. Specifically, in this application, the vertical rib frame 121 is pre-tied to the outside of the mold according to the diameter of the component to be produced, so that the vertical rib frame 121 and the corrugated pipe 200 are integrally inserted into the mold.

[0051] Additionally, refer to Figure 6 As shown in the illustration, this application embodiment also provides a mold, which includes the aforementioned outer steel mold 300.

[0052] The outer steel mold 300 has two mold bodies that are hinged separately. The two mold bodies are connected by a connecting shaft 310 to form a rotatable connection, which facilitates demolding. A flange plate 330 is provided between the two mold bodies. The two flange plates 330 are interlocked to achieve a seal and are connected and fixed by a locking member 340. The locking member 340 is made of bolts or the like.

[0053] Each mold has a hollow pressurized cavity, and the inner wall of each mold has multiple protrusions 320 that communicate with the hollow pressurized cavity. The hollow pressurized cavity is connected to the pressurizing assembly 400. The pressurizing assembly 400 is connected to the two hollow pressurized cavities through a connecting pipe 410. When the pressurizing assembly 400 supplies high-pressure gas into the hollow pressurized cavity, the protrusions 320 extend outward and embed into the fiber concrete under the action of the high-pressure gas. The high-pressure gas drives the protrusions 320 to slide out, which is a common gas-driven method. The protrusions 320 have an inflation chamber that communicates with the hollow pressurized cavity, and the protrusions 320 slide on the mold with a limiting seal. The extension of the protrusions 320 changes the surface density of the fiber concrete during solidification, leaving multiple recessed points on the outer surface of the combined column 100, thereby forming a rough surface 130. During demolding, the two molds are separated by opening the locking device 340, and the protrusions 320 can return to their original position by springs when there is no gas pressure. The return time of the protrusion 320 is locked to ensure timely withdrawal when the fiber-reinforced concrete has fully solidified. Of course, in other embodiments of this application, annular elastic air bags or similar methods can also be used as deformable ribs.

[0054] In this invention, the use of this mold facilitates demolding, changes the surface density during solidification, and gives the composite column a rough surface 130 for easy construction.

[0055] refer to Figure 7 The paper also provides a construction method for fiber-reinforced concrete composite columns, including the following steps:

[0056] S1: Select an outer steel mold of appropriate specifications, and lock and fix the outer steel mold and place it vertically.

[0057] S2: Tie the second steel cage assembly to the outer wall of the corrugated pipe, and after the binding is completed, hoist the second steel cage assembly and the corrugated pipe into the inner position of the outer steel formwork so that the distance between the outer side of the second steel cage assembly and the inner wall of the outer steel formwork is equal.

[0058] S3: Tie the first steel cage assembly, and after tying, hoist it into the interior of the corrugated pipe and place it concentrically with the corrugated pipe.

[0059] S4: Check whether the first and second steel cage assemblies are in the correct positions. If they are in the correct positions, pour fiber-reinforced concrete into the corrugated pipe and between the corrugated pipe and the outer steel formwork.

[0060] S5: After pouring, pressure is applied to the hollow pressure cavity of the outer steel mold through the pressure component, so that the protrusion extends into the concrete.

[0061] S6: After the fiber concrete has solidified, the internal gas of the hollow pressurized cavity is released, the protrusion retracts and resets, and the outer steel mold is removed, so that the outer surface of the fiber concrete composite column has a rough surface.

[0062] In this invention, a fiber-reinforced concrete composite column with high strength support, high compressive strength, and ultimate tensile strain is obtained according to the above method.

[0063] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification, which are not provided in detail for the sake of brevity.

[0064] Additionally, to simplify the description and discussion, and to avoid obscuring one or more embodiments of this specification, well-known connections of other components may or may not be shown in the provided drawings. Furthermore, systems may be illustrated in block diagram form to avoid obscuring one or more embodiments of this specification, and this also takes into account the fact that details regarding implementation of these block diagram systems are highly dependent on the platform on which one or more embodiments of this specification will be implemented (i.e., such details should be fully understood by those skilled in the art). While specific details have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that one or more embodiments of this specification may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0065] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0066] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

Claims

1. A fiber reinforced concrete composite column comprising a one-piece cast-in-place composite column body cast within an outer steel form; characterized in that, The combined column comprises a bellows concentrically arranged with the outer steel mold, an inner part of the bellows is provided with a first reinforcement cage assembly, and an outer part of the bellows and the outer steel mold are provided with a second reinforcement cage assembly; wherein, The first reinforcement cage assembly comprises a peripheral vertical reinforcement ring concentrically arranged with the bellows; the peripheral vertical reinforcement ring is connected with a horizontal reinforcement group for pressing the inner wall of the bellows, and the horizontal reinforcement group is arranged with multiple groups at equal intervals along the height direction of the bellows; any two adjacent horizontal reinforcement groups are connected with first diagonal reinforcements distributed in a figure-of-eight pattern, and the first diagonal reinforcements are connected with first compression-resistant reinforcement cages at the inner part between the first diagonal reinforcements and the horizontal reinforcement group; the second reinforcement cage assembly comprises a vertical reinforcement frame connected with the outer periphery of the bellows; the vertical reinforcement frame is connected with multiple pressing reinforcements for pressing the valleys and peaks of the bellows along the height direction, and any two adjacent pressing reinforcements are connected with second diagonal reinforcements, and the second diagonal reinforcements are connected with second compression-resistant reinforcement cages at the inner part between the second diagonal reinforcements and the pressing reinforcements; The outer surface of the combined column after the outer steel mold is demolded forms a rough surface with multiple recesses.

2. The fiber reinforced concrete composite column of claim 1, wherein, Both ends of each horizontal reinforcement group press the inner peaks of the bellows.

3. The fiber reinforced concrete composite column of claim 2, wherein, The inner part of the peripheral vertical reinforcement ring is concentrically arranged with a central vertical reinforcement ring, and the peripheral vertical reinforcement ring and the central vertical reinforcement ring are connected through the horizontal reinforcement group.

4. The fiber reinforced concrete composite column of claim 3, wherein, Each horizontal reinforcement group comprises multiple horizontal reinforcements with different lengths, and both ends of each horizontal reinforcement press the opposite parts of the inner wall peaks of the bellows.

5. The fiber reinforced concrete composite column of claim 4, wherein, The first diagonal reinforcements are connected between two or three horizontal reinforcements on the same vertical line.

6. The fiber reinforced concrete composite column of claim 5, wherein, The first compression-resistant reinforcement cages are connected in a ring shape at the corresponding inner part.

7. The fiber reinforced concrete composite column of claim 1, wherein The pressing reinforcements comprise first horizontal reinforcements connected between the vertical reinforcement frame and the outer wall peaks of the bellows, and second horizontal reinforcements connected between the vertical reinforcement frame and the outer wall valleys of the bellows. The second compression-resistant reinforcement cages are connected in a ring shape or a rectangular shape at the corresponding inner part.

8. The fiber reinforced concrete composite column according to any one of claims 1 to 7, wherein The vertical sections of the first compression-resistant reinforcement cages and the second compression-resistant reinforcement cages are all triangular.

9. A mold characterized in that, The outer steel mold for preparing the fiber concrete combined column according to any one of claims 1-8; The outer steel mold has two mold bodies hingedly connected in two parts, and the two mold bodies are fixedly connected through a locking member; each mold body has a hollow pressurizing cavity, and the inner wall of each mold body is slidingly provided with multiple protruding members in communication with the hollow pressurizing cavity; the hollow pressurizing cavity is connected with a pressurizing assembly.

10. A method of constructing a fiber reinforced concrete composite column, characterized by, The construction method for preparing the fiber concrete combined column by using the mold in claim 9 comprises the following steps: Selecting an outer steel mold with a proper specification, and vertically placing the outer steel mold after locking and fixing; Binding the second reinforcement cage assembly on the outer wall of the bellows, and hoisting the second reinforcement cage assembly and the bellows into the inner part of the outer steel mold after the binding is completed to position the second reinforcement cage assembly, so that the outer side of the second reinforcement cage assembly and the inner wall of the outer steel mold have an equal spacing; Binding the first reinforcement cage assembly, and hoisting the first reinforcement cage assembly into the inner part of the bellows and concentrically arranging the first reinforcement cage assembly with the bellows after the binding is completed; Checking whether the first reinforcement cage assembly and the second reinforcement cage assembly are in a proper position, and pouring fiber concrete into the inner part of the bellows and between the bellows and the outer steel mold in a position consistent state; After the pouring, the hollow pressurizing cavity in the outer steel mold is pressurized by the pressurizing assembly, so that the protruding member extends into the concrete; After the fiber concrete solidifies, the internal gas in the hollow pressurizing cavity is discharged, the protruding member is retracted and reset, the outer steel mold is removed, and the outer surface of the fiber concrete composite column has a rough surface.

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