Formwork for manufacturing prefabricated column, prefabricated column and assembling and connecting method of prefabricated column

Abstract

The invention discloses a formwork for manufacturing a prefabricated column, the prefabricated column and an assembling and connecting method of the prefabricated column, and the formwork comprises a cuboid-shaped formwork frame which comprises a bottom formwork and four side formworks; the plurality of supporting pieces are symmetrically mounted on the bottom template; the supporting piece comprises a sleeve, the sleeve is vertically fixed on the bottom template, and a first through hole corresponding to the sleeve is formed in the bottom template; a supporting column is inserted in the sleeve, the top of the supporting column extends out of the sleeve, and a gap is formed between the bottom of the supporting column and a bottom opening of the sleeve; the sleeve is communicated with a slurry inlet pipe and a slurry outlet pipe, and the inlet end of the slurry inlet pipe and the outlet end of the slurry outlet pipe abut against the side template. An observation pipe is further included, the observation pipe extends upwards from the bottom template, and a second through hole corresponding to the observation pipe is formed in the bottom template; the outlet end of the observation pipe abuts against the side template and is higher than the outlet end of the slurry outlet pipe. According to the formwork for manufacturing the prefabricated columns, the prefabricated columns can be conveniently and rapidly manufactured, the manufactured prefabricated columns are stable and reliable in structure and high in strength, butt joint assembly can be conveniently and rapidly achieved, and stable and reliable assembly butt joint between every two adjacent prefabricated columns can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated column assembly and processing, and in particular to a template for making prefabricated columns, prefabricated columns, and an assembly and connection method for prefabricated columns. Background Art

[0002] With the development of economy, there are more and more high-rise buildings, and their height is getting higher and higher. The traditional single reinforced concrete column of the building structure can no longer meet the demand. In order to improve the construction efficiency of the construction site, most buildings currently use prefabricated buildings. Prefabricated buildings refer to transferring a large number of on-site operations in traditional construction methods to processing plants, processing a large number of accessories into prefabricated parts, and then transporting the prefabricated parts to the construction site for assembly and installation, such as prefabricated prefabricated beams and prefabricated prefabricated columns.

[0003] The splicing structure of prefabricated columns is the key part between prefabricated columns, especially when they enter elastic-plastic response under strong earthquakes. The splicing structure plays a key role in ensuring the integrity and stability between prefabricated columns.

[0004] In the prior art, the connection method between prefabricated columns has the defects of complicated connection process and low efficiency, and the prefabricated columns cannot be connected together stably and reliably. Summary of the invention

[0005] The purpose of the present invention is to provide a template for making prefabricated columns, prefabricated columns, and an assembly and connection method for prefabricated columns. The template for making prefabricated columns can conveniently and quickly make prefabricated columns. The prefabricated columns made have a stable and reliable structure and high strength. They can be conveniently and quickly docked and assembled, and can achieve stable and reliable assembly and docking between two adjacent prefabricated columns.

[0006] To this end, the present invention provides a template for making prefabricated columns, comprising: a rectangular template frame, which includes a bottom template and four side templates; a plurality of support members, and the plurality of support members are symmetrically mounted on the bottom template; the support member includes a sleeve, the sleeve is vertically fixed to the bottom template, and the bottom template is provided with a first through hole corresponding to the sleeve; a support column is inserted in the sleeve, the top of the support column extends out of the sleeve, and a gap is provided between the bottom of the support column and the bottom opening of the sleeve; a slurry inlet pipe and a slurry outlet pipe are connected to the sleeve, and the inlet end of the slurry inlet pipe and the outlet end of the slurry outlet pipe both conflict with the side templates; an observation tube is also included, the observation tube extends upward from the bottom template, and the bottom template is provided with a second through hole corresponding to the observation tube; the outlet end of the observation tube conflicts with the side template, and the outlet end of the observation tube is higher than the outlet end of the slurry outlet pipe.

[0007] Preferably, the top surface of the bottom template is provided with concave-convex pattern grooves.

[0008] Preferably, the inlet of the slurry inlet pipe is arranged lower than the outlet of the slurry outlet pipe.

[0009] Preferably, the number of the support members is four, and the four support members are respectively arranged close to the four corners of the bottom template.

[0010] Preferably, one of the support members includes three of the sleeves, and the centers of the three sleeves are connected to form an isosceles triangle or an equilateral triangle.

[0011] Preferably, the observation tube is L-shaped, including a vertical observation tube and a horizontal observation tube that are connected; the vertical observation tube extends upward from the bottom template, the outlet of the horizontal observation tube extends to the side template, and the outlet of the horizontal observation tube is higher than the outlet of the slurry outlet pipe.

[0012] The present invention also provides a prefabricated column, which is made by the template for making the prefabricated column.

[0013] Preferably, the prefabricated column comprises: a prefabricated column body, a plurality of the support members are symmetrically arranged in the prefabricated column body; wherein the bottom opening of the sleeve is located at the bottom surface of the prefabricated column body, and the top of the support column extends out of the top surface of the prefabricated column body; the inlet of the slurry inlet pipe and the outlet of the slurry outlet pipe are both located on the side of the prefabricated column body, The inlet of the observation tube is located at the bottom surface of the precast column body, the outlet of the observation tube is located at the side surface of the precast column body, and the outlet of the observation tube is higher than the outlet of the slurry outlet pipe.

[0014] Preferably, the inlet of the slurry inlet pipe, the outlet of the slurry outlet pipe and the outlet of the observation tube are located on the same side of the prefabricated column body.

[0015] The present invention also provides a method for assembling and connecting prefabricated columns, the method comprising: Arrange the two prefabricated columns up and down respectively, wherein the top of the support column of the lower prefabricated column is inserted into the sleeve of the upper prefabricated column; Inserting a plurality of spacers between two of the prefabricated columns so that a leveling gap is formed between the upper and lower prefabricated columns, so as to facilitate leveling of the prefabricated columns; Apply a circle of sealing slurry on the outer edge between the upper and lower prefabricated columns, so that the leveling gap between the upper and lower prefabricated columns forms a closed cavity; Inject slurry from the slurry inlet of the slurry inlet pipe, and the slurry injected into the sleeve will first flow downward until it flows into the leveling gap between the upper and lower prefabricated columns; After the leveling gap is filled with slurry, part of the slurry continuously injected into the leveling gap will enter from the inlet of the vertical observation tube until it flows out from the outlet of the horizontal observation tube; at the same time, part of the slurry continuously injected will move upward in the sleeve, filling the sleeve until it flows out from the slurry outlet of the slurry outlet pipe.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the present invention provides a template for making prefabricated columns, a prefabricated column, and an assembly and connection method for prefabricated columns, the template comprising: a rectangular template frame, which comprises a bottom template and four side templates; a plurality of support members, and a plurality of the support members are symmetrically mounted on the bottom template; the support member comprises a sleeve, the sleeve is vertically fixed on the bottom template, and the bottom template is provided with a first through hole corresponding to the sleeve; a support column is inserted in the sleeve, the top of the support column extends out of the sleeve, and there is a gap between the bottom of the support column and the bottom opening of the sleeve; a slurry inlet pipe and a slurry outlet pipe are connected to the sleeve, and the inlet end of the slurry inlet pipe and the outlet end of the slurry outlet pipe are both in conflict with the side template; an observation tube is also included, the observation tube extends upward from the bottom template, and the bottom template is provided with a second through hole corresponding to the observation tube; the outlet end of the observation tube is in conflict with the side template, and the outlet end of the observation tube is higher than the outlet end of the slurry outlet pipe. The template for making prefabricated columns of the present invention can conveniently and quickly make prefabricated columns. The made prefabricated columns have a stable and reliable structure and high strength, and can conveniently and quickly achieve docking assembly, and can achieve stable and reliable assembly docking between two adjacent prefabricated columns.

[0017] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is one of the structural schematic diagrams of an embodiment of a template for making a prefabricated column according to the present invention; Figure 2 This is a second structural schematic diagram of an embodiment of a template for making prefabricated columns according to the present invention (top view); Figure 3 This is a third structural schematic diagram of an embodiment of a template for making prefabricated columns according to the present invention (top view); Figure 4 This is a fourth structural schematic diagram of an embodiment of a template for making prefabricated columns according to the present invention; Figure 5 This is one of the structural schematic diagrams of an embodiment of a prefabricated column of the present invention; Figure 6 This is the second structural schematic diagram of an embodiment of the prefabricated column of the present invention; Figure 7This is a third structural schematic diagram of an embodiment of a prefabricated column of the present invention; Figure 8 This is a fourth structural schematic diagram of an embodiment of a prefabricated column of the present invention; Fig. 9 yes Figure 8 Enlarged view of part A in the middle; Fig.10 This is the fifth structural schematic diagram of an embodiment of the prefabricated column of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 4 As shown, the template for making prefabricated columns in this embodiment includes: a rectangular template frame, which includes a bottom template 31 and four side templates 32; a plurality of support members, which are symmetrically installed on the bottom template 31; the support member includes a sleeve 21, the sleeve 21 is vertically erected on the bottom template 31, and the bottom template 31 is provided with a first through hole 33 corresponding to the sleeve 21; a support column 22 is inserted into the sleeve 21, the top of the support column 22 extends out of the sleeve 21, and there is a gap between the bottom of the support column 22 and the bottom opening of the sleeve 21; a slurry inlet pipe and a slurry outlet pipe 25 are connected to the sleeve 21, and the inlet end of the slurry inlet pipe and the outlet end of the slurry outlet pipe 25 are both in conflict with the side templates 32; it also includes an observation tube, which extends upward from the bottom template 31, and the bottom template 31 is provided with a second through hole 34 corresponding to the observation tube; the outlet end of the observation tube is in conflict with the side template 32, and the outlet end of the observation tube is higher than the outlet end of the slurry outlet pipe 25.

[0021] In this embodiment, the template frame is a rectangular hollow structure with an opening at the top, and the template frame includes a bottom template 31 and four side templates 32. The bottom template 31 and the four side templates 32 are detachably connected together, and the specific detachable connection method is a detachable connection method commonly used in the technical field, and is not specifically limited here.

[0022] For example, the four sides of the bottom template 31 are respectively provided with sockets 35, and the inner side of the side template 32 is provided with plug posts (not shown in the figure) corresponding to the sockets 35. The plug posts are inserted into the sockets 35, so that the side template 32 can be inserted and installed on the bottom template 31.

[0023] The bottom formwork 31 and the four side formworks 32 are detachably connected. After the pouring is completed, the four side formworks 32 and the bottom formwork 31 can be removed so that the poured prefabricated columns can be exposed and taken out.

[0024] The top surface of the bottom template 31 is provided with concave-convex grooves (not shown in the figure), so that the bottom surface of the cast prefabricated column can be formed with a concave-convex pattern.

[0025] In this embodiment, there are four support members, which are respectively arranged near the four corners of the bottom template 31. The four support members are symmetrically distributed, so that the cast prefabricated column structure can be stable and reliable with high strength, and can make the two prefabricated columns stably and reliably assembled and connected together.

[0026] In this embodiment, Figure 2 As shown, the template for making prefabricated columns also includes a limiting ring 30, which is used to encircle and tighten the four support members. Specifically, the limiting ring 30 is in contact with the outer wall of the sleeve 21 of the four support members to tighten the four support members, so that the four support members can be stably and reliably arranged on the bottom template 31, avoiding the support members from being affected by the slurry during the pouring process and moving or tilting.

[0027] In this embodiment, there is no fixed connection between the support member and the template, and the support member will not hinder the removal of the template; the sleeve 21 can be set in the template by a common connection method in the field, and no specific limitation is made here.

[0028] A support member includes at least one sleeve 21, which is not particularly limited herein.

[0029] In this embodiment, a support member includes three sleeves 21, and the centers of the three sleeves 21 can be connected to form an isosceles triangle or an equilateral triangle, so that the cast prefabricated column structure can be stable and reliable with high strength; and two prefabricated columns can be assembled and connected together stably and reliably.

[0030] The material of the sleeve 21 can be stainless steel, which is not specifically limited here. The sleeve 21 is a hollow structure with openings at both ends. The sleeve 21 extends vertically upward from the top surface of the bottom template 31, and the bottom opening of the sleeve 21 corresponds to the first through hole 33 on the bottom template 31. The aperture of the bottom opening of the sleeve 21 is equal to the aperture of the first through hole 33, which is not specifically limited here.

[0031] The support column 22 is inserted into the sleeve 21 . The diameter of the support column 22 is smaller than the inner diameter of the sleeve 21 . There is a gap between the support column 22 and the sleeve 21 , into which slurry can be injected, so that the support column 22 is firmly and reliably inserted and fixed in the sleeve 21 .

[0032] A fixing piece (not shown) is provided in the sleeve 21 for fixing the support column 22 to prevent the support column 22 from falling to the bottom of the sleeve 21 , so that a distance h can be formed between the bottom of the support column 22 and the bottom opening of the sleeve 21 .

[0033] The fixing member may include a fixing hole (not shown in the figure) arranged through the sleeve 21 and the support column 22, and a fixing bolt (not shown in the figure) is inserted into the fixing hole, so that the support column 22 can be limited and fixed to prevent the support column 22 from falling to the bottom of the sleeve 21.

[0034] In other preferred embodiments, the fixing piece may also be in other shapes and structures, as long as it can satisfy the requirement of limiting and fixing the support column 22 to prevent the support column 22 from falling to the bottom of the sleeve 21, and no specific limitation is made here.

[0035] The sleeve 21 is connected with a slurry inlet pipe (not shown in the figure) and a slurry outlet pipe 25, and the axial directions of the slurry inlet pipe and the slurry outlet pipe 25 are both horizontal; and the slurry outlet pipe 25 is arranged higher than the slurry inlet pipe, that is, the slurry outlet 24 of the slurry outlet pipe 25 is arranged higher than the slurry inlet 23 of the slurry inlet pipe.

[0036] The slurry outlet 24 of the slurry outlet pipe 25 and the slurry inlet 23 of the slurry inlet pipe are both in conflict with the side formwork, and the slurry outlet 24 of the slurry outlet pipe 25 and the slurry inlet 23 of the slurry inlet pipe are blocked by the side formwork 32, which can prevent the slurry from entering the slurry outlet 24 of the slurry outlet pipe 25 and the slurry inlet 23 of the slurry inlet pipe when casting the precast column. After the casting is completed, the slurry outlet 24 of the slurry outlet pipe 25 and the slurry inlet 23 of the slurry inlet pipe are both located on the side of the precast column.

[0037] The observation tube is an L-shaped integrated tube, including a vertical observation tube 13 and a horizontal observation tube 14 that are connected; the vertical observation tube 13 is erected on the bottom template 31, and the vertical observation tube 13 extends upward from the bottom surface of the bottom template 31. The bottom template 31 is provided with a second through hole 34 corresponding to the inlet 11 of the vertical observation tube 13. The outlet 12 of the horizontal observation tube 14 conflicts with the side template 32, and the outlet 12 of the horizontal observation tube 14 is higher than the slurry outlet 24 of the slurry outlet pipe 25.

[0038] In this embodiment, there is no fixed connection between the observation tube and the template, and the observation tube will not hinder the disassembly of the template; the observation tube can be set in the template by a common connection method in the field. For example, the observation tube can be connected to the limit ring 30 or the sleeve 21, so that the observation tube can be stably set in the template. No specific limitation is made here.

[0039] like Figure 5-Figure 10As shown, the prefabricated column made by the template for making the prefabricated column of this embodiment includes: a prefabricated column body 10, and a plurality of support members are symmetrically arranged in the prefabricated column body 10; wherein, the bottom opening of the sleeve 21 is located at the bottom surface of the prefabricated column body 10, and the top of the support column 22 extends out of the top surface of the prefabricated column body 10; the slurry inlet of the slurry inlet pipe and the slurry outlet 24 of the slurry outlet pipe 25 are both located on the side of the prefabricated column body 10, and the slurry outlet 24 of the slurry outlet pipe 25 is higher than the slurry inlet of the slurry inlet pipe; the inlet 11 of the vertical observation tube 13 is located on the bottom surface of the prefabricated column body 10, and the outlet 12 of the horizontal observation tube 14 is located on the side of the prefabricated column body 10, and the outlet 12 of the horizontal observation tube 14 is higher than the slurry outlet 24 of the slurry outlet pipe 25.

[0040] In this embodiment, the cast prefabricated column body 10 is a rectangular parallelepiped structure, and an uneven pattern is formed on the bottom surface of the prefabricated column body 10. When two adjacent prefabricated columns are assembled and docked, slurry is filled between the two adjacent prefabricated columns to achieve the bonding connection of the two adjacent prefabricated columns. By forming the uneven pattern on the bottom surface of the prefabricated column body 10, the bonding connection between the pattern and the slurry can be strengthened, so that the two adjacent prefabricated columns can be firmly and reliably assembled and connected together.

[0041] The number of the supporting members is four, and the four supporting members are located inside the prefabricated column body 10 and are respectively arranged near the four corners of the prefabricated column body 10 .

[0042] By arranging support members at the four corners of the prefabricated column body 10, the prefabricated column body structure can be made stable, reliable and strong; and the assembly strength and connection strength between two adjacent prefabricated columns can be enhanced, so that the two adjacent prefabricated columns can be firmly and reliably assembled and connected together.

[0043] Each support member includes three sleeves 21, and the centers of the three sleeves 21 can be connected to form an isosceles triangle or an equilateral triangle, that is, the three sleeves 21 are symmetrically distributed, which can make the prefabricated column body structure stable, reliable and high in strength.

[0044] The top of the support column 22 extends out of the top surface of the prefabricated column body 10, and there is a gap h between the bottom of the support column 22 and the bottom surface of the prefabricated column body 10, that is, the support column 22 does not extend to the bottom of the sleeve 21, and there is still a gap at the bottom of the sleeve 21. When the upper and lower prefabricated columns are assembled and docked, the top of the support column 22 of the lower prefabricated column can be inserted into the sleeve 21 of the upper prefabricated column, so that the upper and lower prefabricated columns can be assembled and docked.

[0045] In this embodiment, the method for assembling and connecting two prefabricated columns includes: connecting the two prefabricated columns relative to each other, and arranging the two prefabricated columns up and down respectively, wherein the top of the support column 22 of the lower prefabricated column is inserted into the sleeve 21 of the upper prefabricated column; inserting a plurality of pads 15 between the upper and lower prefabricated columns (between the bottom surface of the upper prefabricated column and the top surface of the lower prefabricated column) to form a leveling gap between the upper and lower prefabricated columns to facilitate leveling of the prefabricated columns; and then applying a circle of sealing slurry on the outer edge between the upper and lower prefabricated columns to form a closed cavity in the leveling gap between the upper and lower prefabricated columns. Then, grouting is performed, and slurry is injected from the slurry inlet 23 of the slurry inlet pipe. The slurry injected into the sleeve 21 will first flow downward until it flows into the leveling gap between the upper and lower prefabricated columns; after the leveling gap is filled with slurry, part of the slurry that is continuously injected into the leveling gap will enter from the inlet 11 of the vertical observation tube 13 until it flows out from the outlet 12 of the horizontal observation tube 14; at the same time, part of the slurry that is continuously injected will move upward in the sleeve 21, filling the sleeve 21 until it flows out from the slurry outlet 24 of the slurry outlet pipe 25. Since the outlet 12 of the horizontal observation tube 14 is higher than the slurry outlet 24 of the slurry outlet pipe 25, the slurry flows out of the slurry outlet 24 of the slurry outlet pipe 25 first, and the slurry flows out of the outlet 12 of the horizontal observation tube 14 later; when the slurry flows out after the outlet 12 of the horizontal observation tube 14, it means that the grouting operation is completed. Stop grouting, and then use rubber plugs to block all outlets and inlets.

[0046] In this embodiment, the inlets 23 of the slurry inlet pipes are located at the same height, so that the grouting operation can be easily realized.

[0047] In this embodiment, the slurry outlet 24 of the slurry outlet pipe 25 is higher than the slurry inlet of the slurry inlet pipe. In the sleeve 21, the slurry moves from bottom to top, so that the gaps in the sleeve 21 can be filled with slurry, so that the support column 22 can be firmly and reliably inserted and fixed in the sleeve 21, so that two adjacent prefabricated columns can be firmly and reliably connected and assembled together.

[0048] In this embodiment, the distance m between the outlet 12 of the transverse observation tube 14 and the slurry outlet 24 of the slurry outlet pipe 25 is 8-20 mm, preferably 10 mm. That is, the outlet 12 of the transverse observation tube 14 is 10 mm higher than the slurry outlet 24 of the slurry outlet pipe 25, which can ensure that the leveling gap between the upper and lower prefabricated columns can be filled with slurry and grouting is dense; and it can ensure that the sleeve 21 is filled with slurry and grouting is dense, so that the two prefabricated columns are firmly and reliably assembled and connected together.

[0049] In this embodiment, multiple pads 15 can be evenly spaced along the edge of the leveling gap to seal the gaps around the leveling gap. The gaps are filled with grouting material to connect the upper and lower prefabricated columns so that the leveling gap between the upper and lower prefabricated columns forms a closed cavity. Grouting construction is then carried out after the seat grout solidifies.

[0050] In this embodiment, the height t of the leveling gap is the thickness of the cushion block 15. The thickness of the cushion block 15 may be 15-25 mm, preferably 20 mm, and no specific limitation is made here.

[0051] In this embodiment, the height n of the top of the support column 22 extending from the top surface of the prefabricated column body 10 is greater than the height t of the leveling gap, so that the top of the support column 22 of the lower prefabricated column can pass through the leveling gap and be inserted into the sleeve 21 of the upper prefabricated column, thereby realizing the connection between the two prefabricated columns.

[0052] In this embodiment, the distance h between the bottom of the support column 22 and the bottom surface of the prefabricated column body 10 plus the height t of the leveling gap is greater than the height n of the top of the support column 22 extending from the top surface of the prefabricated column body 10, that is, h+t is greater than n. Therefore, a distance s can be formed between the upper and lower support columns 22, and the grout can fill the leveling gap between the upper and lower support columns 22, and the grouting is dense, so that the upper and lower support columns 22 can be bonded and fixed together, thereby strengthening the firm and reliable assembly connection of the upper and lower prefabricated columns.

[0053] The prefabricated column structure of this embodiment is stable and reliable, has high strength, can be conveniently and quickly butted and assembled, and can achieve stable and reliable assembly and docking between two adjacent prefabricated columns.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A formwork for making prefabricated columns, characterized in that: include: A rectangular template frame, which includes a bottom template and four side templates; A plurality of support members, wherein the plurality of support members are symmetrically mounted on the bottom template; The support member comprises a sleeve, the sleeve is vertically erected on the bottom template, and the bottom template is provided with a first through hole corresponding to the sleeve; A support column is inserted into the sleeve, the top of the support column extends out of the sleeve, and there is a gap between the bottom of the support column and the bottom opening of the sleeve; The sleeve is connected with a slurry inlet pipe and a slurry outlet pipe, and the inlet end of the slurry inlet pipe and the outlet end of the slurry outlet pipe both conflict with the side template; It also includes an observation tube, which extends upward from the bottom template. The bottom template is provided with a second through hole corresponding to the observation tube; the outlet end of the observation tube is in conflict with the side template.

2. The template for making prefabricated columns according to claim 1, characterized in that: The top surface of the bottom template is provided with concave-convex pattern grooves.

3. The template for making prefabricated columns according to claim 1, characterized in that: The slurry inlet of the slurry inlet pipe is arranged lower than the slurry outlet of the slurry outlet pipe.

4. The template for making prefabricated columns according to claim 1, characterized in that: The number of the support members is four, and the four support members are respectively arranged close to the four corners of the bottom template.

5. The formwork for making prefabricated columns according to claim 1, characterized in that: The observation tube is L-shaped, including a vertical observation tube and a horizontal observation tube that are connected; The vertical observation tube extends upward from the bottom template, and the outlet of the horizontal observation tube extends toward the side template.

6. A prefabricated column, characterized in that: The prefabricated column is made of the template for making prefabricated columns according to any one of claims 1-5.

7. The prefabricated column according to claim 6, characterized in that: The prefabricated column comprises: A prefabricated column body, wherein a plurality of the support members are symmetrically arranged in the prefabricated column body; The bottom opening of the sleeve is located on the bottom surface of the prefabricated column body, and the top of the support column extends out of the top surface of the prefabricated column body.

8. The prefabricated column according to claim 7, characterized in that: The inlet of the slurry inlet pipe and the outlet of the slurry outlet pipe are both located on the side of the prefabricated column body. The inlet of the observation tube is located at the bottom surface of the prefabricated column body, and the outlet of the observation tube is located at the side surface of the prefabricated column body.

9. A method for assembling and connecting prefabricated columns as claimed in claim 6, characterized in that: The method comprises: Arrange the two prefabricated columns up and down respectively, wherein the top of the support column of the lower prefabricated column is inserted into the sleeve of the upper prefabricated column; Inserting a plurality of spacers between two of the prefabricated columns so that a leveling gap is formed between the upper and lower prefabricated columns, so as to facilitate leveling of the prefabricated columns; Apply a circle of sealing slurry on the outer edge between the upper and lower prefabricated columns, so that the leveling gap between the upper and lower prefabricated columns forms a closed cavity; Inject slurry from the slurry inlet of the slurry inlet pipe, and the slurry injected into the sleeve will first flow downward until it flows into the leveling gap between the upper and lower prefabricated columns; After the leveling gap is filled with slurry, part of the slurry continuously injected into the leveling gap will enter from the inlet of the vertical observation tube until it flows out from the outlet of the horizontal observation tube; at the same time, part of the slurry continuously injected will move upward in the sleeve, filling the sleeve until it flows out from the slurry outlet of the slurry outlet pipe.

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