Prefabricated composite special-shaped columns

Abstract

The present invention requests protection for an assembled combined special-shaped column, and the key points of its technical solution are that it includes a baffle, a transverse support assembly, a vertical support assembly, a transverse connection assembly and a vertical connection assembly. A grouting port is provided at the bottom of the baffle. There are at least a plurality of baffles, which are arranged on the side of the transverse support assembly. The transverse connection assembly is arranged above the grouting port. The transverse connection assembly is respectively connected to the vertical support assembly and the baffle, and is used to support the baffle. The vertical connection assembly is respectively connected to the transverse support assembly and the vertical support assembly, and is used to maintain the relative position of the transverse support assembly and the vertical support assembly. The present invention connects the transverse connection assembly to the vertical support assembly and the baffle respectively, thereby strengthening the connection of the baffle and ensuring the relative position of the baffle. In this way, the baffle can be supported without an additional supporting structure, and the baffle can be prevented from being washed away by concrete, thereby achieving the purpose of reducing costs and facilitating and quickly constructing.

Description

Technical Field

[0001] The present invention relates to a special-shaped column, and more particularly to an assembled special-shaped column. Background Art

[0002] Special-shaped columns refer to columns with non-rectangular cross-sections. Special-shaped columns are used in the construction field with different requirements depending on the actual use environment. There are also many types of special-shaped columns depending on the architectural design. Common prefabricated composite special-shaped columns are mostly used for the installation of partition walls, such as for quickly building interior partition walls to form multiple rooms. The pouring of special-shaped columns mostly uses steel bars as support and concrete as filling. However, in actual use, it is found that the design and production of reinforced concrete special-shaped columns are relatively complicated. In particular, when pouring concrete, baffles need to be set to form a relatively isolated space to prevent concrete leakage. Therefore, additional support structures are required to prevent the baffles from being washed away by concrete, resulting in a more complicated construction process and higher costs. The steel support structure occupies a large area and is not convenient for quick construction. Therefore, there is a need for an prefabricated composite special-shaped column that can support the baffle without an additional support structure to prevent the baffle from being washed away by concrete, thereby achieving the purpose of reducing costs and facilitating quick construction.

[0003] In view of the above reasons, how to support the baffle without the need for an additional supporting structure is exactly the problem considered in this application. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, an assembled combined special-shaped column is provided. The device can support the baffle without additional supporting structure, preventing the baffle from being washed away by concrete, thereby achieving the purpose of reducing costs and facilitating and rapid construction.

[0005] To achieve the above-mentioned purpose, the following technical solution is provided: an assembled combined special-shaped column, comprising a baffle, a transverse support assembly, a vertical support assembly, a transverse connection assembly and a vertical connection assembly, a grouting port being provided at the bottom of the baffle, at least a plurality of baffles being provided, and being arranged on the side of the transverse support assembly, the baffle, the transverse support assembly and the ground forming a space which is only open upward, the vertical support assembly being installed in the transverse support assembly and being used to support the transverse support assembly, the transverse connection assembly being provided above the grouting port, the transverse connection assembly being respectively connected to the vertical support assembly and the baffle and being used to support the baffle, the vertical connection assembly being respectively connected to the transverse support assembly and the vertical support assembly and being used to maintain the relative position of the transverse support assembly and the vertical support assembly fixed.

[0006] In summary, the above technical solution has the following beneficial effects: the specific extension direction and shape of the special-shaped column are determined according to actual use requirements. The various components of the assembled composite special-shaped column are usually cast as the base of the special-shaped column. The key is to prevent the leakage of the poured concrete through the baffle to maintain the shape of the formed partition wall. At the same time, after the concrete is formed, the baffle can also be used as the outer protective layer of the wall. Therefore, the actual role of the assembled composite special-shaped column is to assist the steel bar support or independently support the arbitrarily set extension partition wall.

[0007] For cost-saving considerations, the baffles, transverse support assemblies, vertical support assemblies, transverse connection assemblies, and vertical connection assemblies can all be made of low-cost materials such as wood. The transverse support assemblies are used as the main supporting components of the extension, so the baffles are directly connected to the transverse support assemblies. However, the transverse support assemblies are usually just single frames, so steel bars can be used to pass through and fix them in place.

[0008] The vertical support components are used to support the frame of the horizontal support components to prevent the horizontal support components from collapsing in the vertical direction. At the same time, they are installed in the form of components rather than completely filled, which can leave enough space for concrete to flow. After the concrete solidifies, it will fully surround the vertical support components to achieve a better fixing effect.

[0009] The horizontal connection assembly is used to strengthen the connection between the vertical support assembly and the baffle. It transfers part of the concrete impact force received by the baffle to the vertical support assembly, thereby strengthening the connection effect of the baffle. At the same time, it can support the baffle without the need for additional support structures, further preventing the baffle from being collapsed by concrete, thereby achieving the purpose of reducing costs and facilitating and speeding up construction.

[0010] The vertical connection components can be plugged in. Since the horizontal support components and vertical support components are made of low-cost materials such as wood and do not require high actual hardness, the hardness of the wall mainly depends on the concrete after solidification. Therefore, the vertical connection components can be inserted into the horizontal support components and vertical support components at the same time to achieve a fixing effect.

[0011] In addition, the grouting port is located at the very bottom, so that bottom-up grouting can directly act on the foundation of the entire structure, filling the surrounding gaps with grouting materials to improve the stability and bearing capacity of the foundation. In addition, the construction process of bottom-up grouting is relatively simple, has strong adaptability to the environment, and does not require complex equipment or a large amount of labor.

[0012] The present invention uses freely combinable baffles, transverse support assemblies, vertical support assemblies, transverse connection assemblies and vertical connection assemblies as assembled combined special-shaped columns, and the installation position of each assembly can be adjusted arbitrarily according to actual use requirements. On this basis, the transverse connection assembly is respectively connected to the vertical support assembly and the baffle, thereby strengthening the connection of the baffle and ensuring that the relative position of the baffle is fixed. In this way, the baffle can be supported without an additional supporting structure, avoiding the baffle being washed away by concrete, thereby achieving the purpose of reducing costs and facilitating and quickly constructing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the assembled composite special-shaped column;

[0014] Figure 2 It is a front cross-sectional view of the transverse connection component part;

[0015] Figure 3 It is a side cross-sectional view of a transverse connection component portion;

[0016] Figure 4 It is a side sectional view of the vertical connection component;

[0017] Figure 5 Schematic diagram of the three-dimensional structure of the vertical connection component.

[0018] Reference numerals: 1, baffle; 2, horizontal support assembly; 3, vertical support assembly; 4, horizontal connection assembly; 5, vertical connection assembly;

[0019] 11. Grouting port;

[0020] 21. Upper support beam; 22. Lower support beam; 23. Mounting hole; 24. Through hole;

[0021] 31. Support plate; 32. First connector; 33. First abutment member;

[0022] 41. Fixed housing; 42. First receiving slot; 43. First plug-in slot; 44. Second plug-in connector; 45. Second abutment member; 46. Third plug-in connector; 47. Third abutment member; 48. Second receiving slot; 49. Third receiving slot;

[0023] 411, first through hole; 412, second through hole; 413, third through hole; 414, fourth through hole; 415, fifth through hole; 416, sixth through hole;

[0024] 51. Threaded shaft; 52. Threaded sleeve; 53. Interference piece; 54. Blade; 55. Drill bit. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0026] Reference Figure 1-5 As shown, the assembled combined special-shaped column includes a baffle 1, a transverse support assembly 2, a vertical support assembly 3, a transverse connection assembly 4 and a vertical connection assembly 5. A grouting port 11 is provided at the bottom of the baffle 1. There are at least two baffles 1, which are arranged on the side of the transverse support assembly 2. The baffle 1, the transverse support assembly 2 and the ground form a space with only an upward opening. The vertical support assembly 3 is installed in the transverse support assembly 2 and is used to support the transverse support assembly 2. The transverse connection assembly 4 is provided above the grouting port 11. The transverse connection assembly 4 is respectively connected to the vertical support assembly 3 and the baffle 1 and is used to support the baffle 1. The vertical connection assembly 5 is respectively connected to the transverse support assembly 2 and the vertical support assembly 3 to maintain the relative position of the transverse support assembly 2 and the vertical support assembly 3 fixed;

[0027] The specific extension direction and shape of the special-shaped column are determined according to the actual use requirements. The various components of the assembled composite special-shaped column are usually cast as the base of the special-shaped column. The key is to prevent the leakage of the poured concrete through the baffle 1 to maintain the shape of the formed partition wall. At the same time, after the concrete is formed, the baffle 1 can also be used as the outer protective layer of the wall. Therefore, the actual role of the assembled composite special-shaped column is to assist the steel bar support or independently support the arbitrarily set extension partition wall.

[0028] For cost-saving considerations, the baffle 1, the transverse support assembly 2, the vertical support assembly 3, the transverse connection assembly 4 and the vertical connection assembly 5 can all be made of low-cost materials such as wood. The transverse support assembly 2 is used as an extended main support component, so the baffle 1 is directly connected to the transverse support assembly 2. However, the transverse support assembly 2 is usually just a single frame, so steel bars can be used to pass through and fix it in place.

[0029] The vertical support assembly 3 is used to support the frame of the horizontal support assembly 2 to prevent the horizontal support assembly 2 from collapsing in the vertical direction. At the same time, it is installed in the form of components instead of being completely filled, so that enough space can be left for concrete to flow. After the concrete solidifies, it fully surrounds the vertical support assembly 3, thereby forming a better fixing effect.

[0030] The transverse connecting assembly 4 is used to strengthen the connection between the vertical supporting assembly 3 and the baffle 1, and transfers part of the concrete impact force received by the baffle 1 to the vertical supporting assembly 3, thereby strengthening the connection effect of the baffle 1. At the same time, the baffle 1 can be supported without an additional supporting structure, further preventing the baffle 1 from being collapsed by the concrete, thereby achieving the purpose of reducing costs and facilitating and speeding up construction.

[0031] The vertical connection assembly 5 can be inserted in a plug-in manner. Since the horizontal support assembly 2 and the vertical support assembly 3 are made of low-cost materials such as wood and do not require high actual hardness, the hardness of the wall mainly depends on the concrete after solidification. Therefore, the vertical connection assembly 5 can be inserted into the horizontal support assembly 2 and the vertical support assembly 3 at the same time to achieve a fixing effect.

[0032] In addition, the grouting port 11 is provided at the very bottom, so that the bottom-up grouting can directly act on the foundation part of the entire structure, and the surrounding gaps are filled with grouting materials, thereby improving the stability and bearing capacity of the foundation. In addition, the construction process of the bottom-up grouting is relatively simple, has strong adaptability to the environment, and does not require complex equipment or a large amount of labor.

[0033] The present invention uses the freely combinable baffle 1, horizontal support assembly 2, vertical support assembly 3, horizontal connection assembly 4 and vertical connection assembly 5 as an assembled combined special-shaped column, and the installation position of each assembly can be arbitrarily adjusted according to actual use requirements. On this basis, the horizontal connection assembly 4 is respectively connected to the vertical support assembly 3 and the baffle 1, thereby strengthening the connection of the baffle 1 and ensuring that the relative position of the baffle 1 is fixed. In this way, the baffle 1 can be supported without an additional supporting structure, avoiding the baffle 1 from being washed away by concrete, thereby achieving the purpose of reducing costs and facilitating and quickly constructing.

[0034] Furthermore, the lateral support assembly 2 includes two upper support beams 21 and two lower support beams 22. The two upper support beams 21 are symmetrically arranged and are both arranged above the vertical support assembly 3. A gap is left between the two upper support beams 21. The baffle 1 is arranged on the side of the upper support beam 21 away from the other upper support beam 21. The two lower support beams 22 are symmetrically arranged and are both arranged below the vertical support assembly 3.

[0035] The upper support beam 21 is provided with a plurality of mounting holes 23 , and the vertical connection assembly 5 is connected to the mounting holes 23 ;

[0036] According to the principle of leverage, the vertical support assembly 3 close to the ground is less likely to tilt than the vertical support assembly 3 far from the ground. Therefore, the upper support beam 21 in the horizontal support assembly 2 is mainly used as the supporting body, and the lower support beam 22 is used as a buffer layer for the vertical support assembly 3 to prevent the vertical support assembly 3 from directly contacting the ground. This is convenient for disassembly and assembly. On the other hand, if the ground is uneven, the lower support beam 22 can also play a leveling role, thereby avoiding vertical support assemblies 3 of the same specification from having vertical height differences due to the uneven ground, resulting in unstable installation.

[0037] There is a gap between the two upper support beams 21, and each upper support beam 21 is only connected to one baffle 1, so the two upper support beams 21 need to be arranged symmetrically. At the same time, the upper support beam 21 and the lower support beam 22 are connected by a vertical support assembly 3, so that the upper support beam 21 and the lower support beam 22 can be fully wrapped during grouting.

[0038] Furthermore, the vertical support assembly 3 includes a plurality of support plates 31, each of which is detachably connected to the upper support beam 21 and the lower support beam 22. The plurality of support plates 31 are symmetrically distributed. The support plates 31 are connected to the upper support beam 21 via a vertical connection assembly 5, and the support plates 31 are connected to another support plate 31 and the baffle 1 via a horizontal connection assembly 4.

[0039] Since the upper support beam 21 and the lower support beam 22 are symmetrically arranged, in order to maintain the stability of the entire structure, the support plate 31 also needs to be symmetrically arranged corresponding to the upper support beam 21 and the lower support beam 22. However, there is a lack of support between the two symmetrically arranged support plates 31, which can easily cause the structure to tilt. Therefore, the spacing between the two support plates 31 is also maintained by a transverse connecting component 4.

[0040] Furthermore, the vertical support assembly 3 also includes a plurality of first connectors 32 and a plurality of first resisting members 33. The plurality of first connectors 32 are respectively fixedly connected to the corresponding support plates 31. The first resisting member 33 is fixedly connected to one end of the first connector 32 away from the support plate 31. The horizontal connection assembly 4 includes a fixed shell 41. The fixed shell 41 is provided with a first receiving groove 42 and a first plugging groove 43. The first plugging groove 43 is provided inside the first receiving groove 42. The first plugging groove 43 is used to receive the first connector 32.

[0041] The transverse connection assembly 4 also includes a second plug-in connector 44, a second resisting member 45, a third plug-in connector 46 and a third resisting member 47. A second accommodating groove 48 and a third accommodating groove 49 are further provided in the fixed shell 41. The second accommodating groove 48 and the third accommodating groove 49 are communicated with each other. The second accommodating groove 48 is used to accommodate the second resisting member 45, and the third accommodating groove 49 is used to accommodate the third resisting member 47. The second resisting member 45 is fixedly connected to one end of the second plug-in connector 44 close to the third plug-in connector 46, and the third resisting member 47 is fixedly connected to one end of the third plug-in connector 46 close to the second plug-in connector 44. The second plug-in connector 44 and the third plug-in connector 46 are respectively fixedly connected to two symmetrically arranged baffles 1;

[0042] When the second receiving groove 48 is used to receive the second resisting member 45 and the third receiving groove 49 is used to receive the third resisting member 47, the two ends of the third resisting member 47 respectively abut against the inner wall of the third receiving groove 49 and the second resisting member 45, and the two ends of the second resisting member 45 respectively abut against the inner wall of the second receiving groove 48 and the third resisting member 47;

[0043] The fixed shell 41 further defines a first through hole 411, a second through hole 412, and a third through hole 413. The first through hole 411 communicates between the exterior of the fixed shell 41 and the first accommodating groove 42, the second through hole 412 communicates between the first accommodating groove 42 and the second accommodating groove 48, and the third through hole 413 communicates between the second accommodating groove 48 and the exterior of the fixed shell 41. The second resisting member 45 defines a fourth through hole 414, the third resisting member 47 defines a fifth through hole 415, and the first resisting member 33 defines a sixth through hole 416.

[0044] When the second resisting member 45 and the third resisting member 47 are in contact with each other, the second through hole 412, the third through hole 413, the fourth through hole 414 and the fifth through hole 415 are in communication with each other;

[0045] When the first resisting member 33 is received in the first receiving groove 42 , the second through hole 412 and the sixth through hole 416 are in communication;

[0046] The transverse connecting component 4 mainly plays the role of strengthening the connection. It needs to be fully immersed when pouring concrete. Therefore, it needs to be installed in advance and play a fixing role. The main body of the transverse connecting component 4 is a fixing shell 41. The abutment between the first plug-in groove 43 and the first plug-in piece 32 is used as a connection method to relatively fix the positions of the multiple support plates 31. Similarly, the mutual interference between the second accommodating groove 48 and the second interference piece 45, the third accommodating groove 49 and the third interference piece 47 can ensure that the two symmetrically arranged baffles 1 can be firmly connected, and the second interference piece 45 and the third interference piece 47 can also interfere with each other. Therefore, after the second plug-in piece 44 and the third plug-in piece 46 are installed, the second interference piece 45 and the third interference piece 47 are both in a clamped state. In this state, when pouring concrete, since the concrete will simultaneously impact the symmetrical baffles 1, the second interference piece 45 and the third interference piece 47 can offset the impact forces in two opposite directions, thereby reducing the impact on the overall structure and better maintaining the position of the baffle 1 fixed;

[0047] Since gaps will be formed among the first accommodating groove 42, the second accommodating groove 48 and the third accommodating groove 49 when the fixed shell 41 is submerged in concrete, and the gaps will reduce the strength of the concrete after solidification, the first through hole 411, the second through hole 412, the third through hole 413, the fourth through hole 414 and the fifth through hole 415 are provided to connect the gaps in various places, and can also be used as exhaust channels when the concrete fills the gaps. In addition, grouting from the bottom can further reduce the possibility of residual gaps.

[0048] Furthermore, the vertical connection assembly 5 includes a threaded shaft 51, a threaded sleeve 52, a contact piece 53, a blade 54 and a drill bit 55. The contact piece 53 is fixedly connected to the threaded shaft 51, the threaded shaft 51 is threadedly connected to the threaded sleeve 52, the blade 54 is fixedly connected to the side of the connection sleeve, and the drill bit 55 is fixedly connected to the bottom of the connection sleeve.

[0049] The vertical connection assembly 5 has the following operations when in use:

[0050] Place the blade 54 in the mounting hole 23 , with the drill bit 55 contacting the support plate 31 ;

[0051] The threaded shaft 51 is rotated by the interference piece 53, and the rotation direction is the direction of the threaded connection between the threaded shaft 51 and the threaded sleeve 52;

[0052] After the blade 54 is inserted into the upper support beam 21 and the drill bit 55 is inserted into the support plate 31 , the abutment piece 53 is rotated in the reverse direction to separate the threaded shaft 51 and the threaded sleeve 52 ;

[0053] The fixing function of the vertical connection assembly 5 is essentially to insert the blade 54 into the upper support beam 21 to limit the movement of the threaded sleeve 52, and then insert the drill bit 55 into the support plate 31 to limit the movement of the support plate 31, thereby fixing the positions of the support plate 31 and the upper support beam 21 relatively. After the installation is completed, the part of the threaded shaft 51 that has no effect on the fixing is separated for cost saving considerations. In this way, when it is used again, only a new threaded sleeve 52 component needs to be replaced.

[0054] In addition, after the threaded shaft 51 and the threaded sleeve 52 are connected, if the threaded shaft 51 is twisted again and the rotation direction is the direction of the threaded connection between the threaded shaft 51 and the threaded sleeve 52, the threaded shaft 51 will conflict with the threaded sleeve 52 and the friction between the threads will cause the threaded shaft 51 to drive the threaded sleeve 52 to rotate, otherwise the threaded shaft 51 and the threaded sleeve 52 will be separated.

[0055] Furthermore, a plurality of through holes 24 for accommodating steel bars are provided in the upper support beam 21 .

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. Assembled composite special-shaped column, characterized by: The invention comprises a baffle, a transverse support assembly, a vertical support assembly, a transverse connection assembly and a vertical connection assembly, wherein a grouting port is provided at the bottom of the baffle, and the number of the baffles is at least a plurality and they are arranged on the side of the transverse support assembly, the baffle, the transverse support assembly and the ground form a space which is only open upward, the vertical support assembly is installed in the transverse support assembly and is used to support the transverse support assembly, the transverse connection assembly is arranged above the grouting port, the transverse connection assembly is respectively connected to the vertical support assembly and the baffle, and is used to support the baffle, and the vertical connection assembly is respectively connected to the transverse support assembly and the vertical support assembly, and is used to maintain the relative position of the transverse support assembly and the vertical support assembly fixed; The lateral support assembly includes two upper support beams and two lower support beams, the two upper support beams are symmetrically arranged and are both arranged above the vertical support assembly, with a gap left between the two upper support beams, the baffle is arranged on the side of the other upper support beam of the upper support beam, and the two lower support beams are symmetrically arranged and are both arranged below the vertical support assembly; The upper support beam is provided with a plurality of mounting holes, and the vertical connection assembly is connected to the mounting holes; The vertical support assembly includes a plurality of first support plates, each of which is detachably connected to the upper support beam and the lower support beam, and the plurality of first support plates are symmetrically distributed. The first support plate is connected to the upper support beam via a vertical connection assembly, and the first support plate is connected to another first support plate and the baffle via a horizontal connection assembly; The vertical support assembly also includes a first connector and multiple first resisting members, and the multiple first connectors are respectively fixedly connected to the corresponding first support plates. The first resisting member is fixedly connected to one end of the first connector away from the first support plate. The horizontal connection assembly includes a fixed shell, and a first accommodating groove and a first plug-in groove are provided in the fixed shell. The first plug-in groove is provided inside the first accommodating groove, and the first plug-in groove is used to accommodate the first connector.

2. The assembled composite special-shaped column according to claim 1, characterized in that: The transverse connection assembly further includes a second plug-in connector, a second resisting member, a third plug-in connector, and a third resisting member. A second accommodating groove and a third accommodating groove are further provided in the fixed shell. The second accommodating groove and the third accommodating groove are communicated with each other. The second accommodating groove is used to accommodate the second resisting member. The third accommodating groove is used to accommodate the third resisting member. The second resisting member is fixedly connected to one end of the second plug-in connector close to the third plug-in connector. The third resisting member is fixedly connected to one end of the third plug-in connector close to the second plug-in connector. The second plug-in connector and the third plug-in connector are respectively fixedly connected to two symmetrically arranged baffles. When the second accommodating groove is used to accommodate the second resistance member and the third accommodating groove is used to accommodate the third resistance member, the two ends of the third resistance member respectively abut against the inner wall of the third accommodating groove and the second resistance member, and the two ends of the second resistance member respectively abut against the inner wall of the second accommodating groove and the third resistance member.

3. The assembled composite special-shaped column according to claim 2, characterized in that: The fixed shell is further provided with a first through hole, a second through hole and a third through hole, the first through hole communicating with the exterior of the fixed shell and the first accommodating groove, the second through hole communicating with the first accommodating groove and the second accommodating groove, the third through hole communicating with the second accommodating groove and the exterior of the fixed shell, the second interference member is provided with a fourth through hole, the third interference member is provided with a fifth through hole, and the first interference member is provided with a sixth through hole; When the second and third conflicting members conflict with each other, the second through hole, the third through hole, the fourth through hole and the fifth through hole are connected; When the first resisting member is accommodated in the first accommodating groove, the second through hole is communicated with the sixth through hole.

4. The assembled composite special-shaped column according to claim 3, characterized in that: The vertical connection assembly includes a threaded shaft, a threaded sleeve, a contact piece, a blade and a drill bit. The contact piece is fixedly connected to the threaded shaft, the threaded shaft and the threaded sleeve are threadedly connected, the blade is fixedly connected to the side of the connection sleeve, and the drill bit is fixedly connected to the bottom of the connection sleeve.

5. The assembled composite special-shaped column according to claim 4, characterized in that: The vertical connection assembly has the following operations when in use: Place the blade in the mounting hole with the drill bit touching the first support plate; The threaded shaft is rotated by the interference piece, and the rotation direction is the direction of the threaded connection between the threaded shaft and the threaded sleeve; After the blade is inserted into the upper support beam and the drill bit is inserted into the first support plate, the abutment piece is rotated in the reverse direction to separate the threaded shaft and the threaded sleeve.

6. The assembled composite special-shaped column according to claim 1, characterized in that: The upper support beam is also provided with a plurality of through holes for accommodating steel bars.

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