Construction method of main structure of free secondary anchor bar formwork construction column

Abstract

The application discloses a main body structure construction method of a secondary-anchoring-free formwork supporting structure column, which replaces the anchoring technology by adopting a pre-buried mode for horizontal connecting tendons of a frame column and a structure column, realizes synchronous formwork supporting of the structure column and the main body structure concrete and one-time concrete pouring, breaks the conventional structure column construction method of constructing after the formwork support frame is removed after main body structure concrete pouring, avoids secondary anchoring and anchoring construction required pulling test, saves time of anchoring construction required main body structure reaching design strength and time of anchoring construction required waiting for anchoring glue solidification strength to reach a requirement for anchoring pulling test, saves anchoring and pulling test construction cost, thereby avoiding secondary measurement positioning, formwork supporting and concrete pouring processes, shortens construction intervals, saves construction period, reduces secondary construction danger, and improves one-time concrete forming construction quality.

Description

Technical Field

[0001] The present invention relates to the technical field of structural column construction, and in particular to a main structure construction method of a structural column without secondary reinforcement planting and formwork support. Background Art

[0002] As a crucial component of a frame structure, structural columns not only serve as partitions and enclosures but also significantly enhance a building's overall seismic performance. In modern construction, the proper design and construction of structural columns are crucial for ensuring building quality and safety. Structural columns are often placed at key locations such as the junction of interior and exterior walls, stairwells, and elevator shafts. By enhancing the building's integrity and stability, they effectively protect against the impact of natural disasters like earthquakes.

[0003] There are many problems with traditional structural column construction methods. First, structural column construction usually needs to be carried out after the main structure construction is completed and the formwork is removed, which leads to a long interval during the construction process and increases the overall construction period of the project. Secondly, the construction of a large number of structural columns places extremely high demands on measurement and layout, which not only increases the difficulty of construction, but may also lead to positioning errors. In addition, traditional rebar planting and pull-out tests are not only affected by the strength of the main structure, but also by the limitations of rebar planting materials and construction processes, which can easily lead to safety hazards. During the process of supporting formwork and pouring concrete, high-altitude operations are frequent, which is prone to safety accidents. At the same time, a single formwork system can easily lead to formwork expansion, increasing construction costs.

[0004] The shortcomings of existing technologies are primarily reflected in the following aspects: First, the construction period is long. Traditional methods require waiting for the main structure to be completed before beginning structural column construction, which delays the overall project schedule. Second, the construction cost is high. The extensive surveying and layout work and high-altitude operations increase the investment in manpower and materials. Third, the safety risks are significant. The rebar planting and pull-out tests present significant safety hazards, and the formwork is prone to expansion during concrete pouring, affecting construction quality. These issues not only affect construction efficiency but also increase the overall cost and safety risks of the project. Summary of the Invention

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present application is to provide a main structure construction method for secondary anchor rod free formwork constructional column, which replaces the anchor rod process by using the pre-buried method for the horizontal tie rod of the frame column and the constructional column, realizes the synchronous formwork and one-time concrete pouring of the constructional column and the main structure concrete, breaks the conventional construction method of the constructional column, that is, the method of removing the formwork support frame after the main structure concrete pouring and then constructing, avoids the secondary anchor rod and anchor rod construction required pulling test, saves the time required for anchor rod construction and the time required for anchor rod construction after the anchor rod solidification strength reaches the requirement for anchor rod pulling test, saves the construction cost of anchor rod and pulling test, thereby avoiding the process of secondary measurement positioning, formwork setting and concrete pouring, shortens the construction interval, saves the construction period, reduces the danger of secondary construction, and improves the construction quality of one-time molding of concrete.

[0006] According to one aspect of the present application, a main structure construction method for secondary anchor rod free formwork constructional column is provided, comprising:

[0007] S100, installing the prefabricated constructional column steel according to the positioning of the constructional column to the top of the lower constructional column steel arranged on the lower floor slab, connecting the prefabricated constructional column steel and the lower constructional column steel through the binding of the wire, and extending the top of the prefabricated constructional column steel into the beam slab steel of the upper floor slab, and then installing the extruded plate on the upper surface and side surface of the contact surface between the prefabricated constructional column steel and the upper floor slab;

[0008] S200, on the basis of step S100, formwork reinforcement is performed on the prefabricated constructional column steel and the upper floor slab, the horizontal tie rod position required for the brickwork of the infilled wall is accurately positioned and holed on the formwork, the horizontal tie rod passes through the positioning hole on the formwork, penetrates the prefabricated constructional column steel, and passes through the positioning hole on the other end of the formwork, so as to ensure that the length of the horizontal tie rod exposed from the formwork meets the requirement of the brickwork of the infilled wall; the pull rod passes through the reinforcement hole on the formwork, penetrates the prefabricated constructional column steel, and is fastened by the nut to ensure that the constructional column does not deform and swell during the pouring of the concrete;

[0009] S300, on the basis of step S200, the concrete is poured for the constructional column, the upper floor slab and the frame column, the extruded plate is removed after pouring for one week, the surface where the constructional column and the upper floor slab meet is chiseled and washed to ensure that the adjacent concrete aggregate is exposed;

[0010] S400, on the basis of step S300, the area where the extruded plate is removed is filled and poured with high one-mark micro-expanding fine aggregate concrete to ensure that the micro-expanding fine aggregate concrete is closely connected with the constructional column and the upper floor slab, and the formwork is removed after the initial setting of the concrete to complete the construction of the constructional column.

[0011] Further, the method further comprises: cleaning and straightening the concrete spattered on the lower floor slab in advance, and chiseling the part of the lower floor slab contacted by the constructional column to expose the concrete aggregate on the lower floor slab, thereby increasing the adhesion between the lower floor slab and the constructional column.

[0012] Further, the installing the extruded slab in step S100 comprises: passing the extruded slab through the main reinforcement of the prefabricated constructional column and abutting against the stirrup, and checking whether the installation of the extruded slab is firm to avoid displacement during concrete pouring.

[0013] Further, the step S200 further comprises: formwork supporting and reinforcing the frame column and pre-burying the horizontal tie, so that the horizontal tie is exposed outside the formwork of the frame column and has a length meeting the requirements of the infill wall masonry.

[0014] Further, the sequence of the concrete pouring in step S300 comprises: pouring the frame column first, then pouring the upper floor slab, and finally pouring the constructional column.

[0015] Further, the concrete should be pre-wetted before the concrete pouring in step S300, which is to flush the sundries generated in the formwork reinforcing process and to keep the surface of the formwork and the bottom of the constructional column and the frame column wet, thereby preventing the concrete from being rapidly dehydrated and affecting the pouring quality.

[0016] Further, 20-30mm of mortar should be pre-poured at the bottom of the constructional column and the frame column before the concrete pouring in step S300 to form a joint, so that the coarse aggregate of the concrete at the bottom is buffered and the pouring quality is ensured; the mortar has the same concrete grade as the concrete used in the pouring.

[0017] Further, in the process of pouring the constructional column, the concrete can be poured to the side of the extruded slab close to the constructional column, thereby preventing the constructional column and the upper floor slab from being poured as a whole.

[0018] Further, the method further comprises: masonry of the infill wall, and connecting the horizontal tie pre-buried on the frame column and the constructional column with the horizontal joint of the infill wall to ensure the stability of the wall and the main body.

[0019] Further, the construction method is applicable not only to the case that the constructional column is located on the outer wall of the building, but also to the case that the constructional column is located in the indoor of the building.

[0020] The beneficial effects of the present application are as follows:

[0021] 1. The method realizes synchronous formwork erection and one-time concrete pouring of the structural column and the main structure concrete by replacing the post-embedded anchoring process with the pre-embedded horizontal tie of the frame column and the structural column, breaks the conventional method of constructing the structural column after the main structure concrete is poured and the formwork support frame is removed, avoids the secondary anchoring and the anchoring construction requires the pull-out test, saves the time of waiting for the main structure to reach the design strength and the time of waiting for the anchoring to reach the required solidification strength for the pull-out test after the anchoring construction is completed, saves the construction cost of anchoring and pull-out test, thereby avoiding the process of secondary measurement positioning, formwork erection and concrete pouring, shortening the construction interval, saving the construction period, reducing the danger of secondary construction, and improving the construction quality of one-time molding of concrete.

[0022] 2. The method separates the top end of the structural column from the main structure of the upper floor slab by using the extruded sheet, which does not change the force transmission system of the building structure, speeds up the construction of the structural column, and the extruded sheet material does not react with concrete in any way, has a good separation effect, and is easy to remove.

[0023] 3. The extruded sheet, formwork, and tension screw used in the method are common materials on the construction site, without the need to customize any components, and the method is convenient to construct and easy to operate, and has wide applicability.

[0024] 4. The structural column reinforcement used in the method is pre-fabricated in a steel reinforcement processing plant, effectively improving the efficiency of production and installation, and reducing the construction danger of high-altitude operation of on-site binding construction.

[0025] 5. The upper and lower stirrups of the structural column reinforcement are encrypted and bound during the production of the structural column reinforcement, effectively improving the overall seismic performance of the structural column.

[0026] 6. The method is not only suitable for the case where the structural column is located at the edge of the building structure, but also suitable for the case where the structural column is located indoors, which can effectively improve the overall efficiency of building construction.

[0027] Additional aspects and advantages of the application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0029] Figure 1 is a flow chart of a main structure construction method for a secondary anchoring formwork-free structural column in an embodiment of the application;

[0030] Figure 2is a main structure construction schematic diagram of a secondary-plant-bar-free formwork constructional column in an embodiment of the present application;

[0031] Figure 3 is a constructional column and floor structure schematic diagram after construction in an embodiment of the present application;

[0032] In all the drawings, the same reference signs refer to the same technical features, specifically:

[0033] 1 - lower floor, 2 - lower constructional column steel bars, 3 - upper floor, 4 - prefabricated constructional column steel bars, 5 - main bars, 6 - stirrups, 7 - extruded plates, 8 - formworks, 9 - opposite-pulling screw rods, 10 - nuts, 11 - horizontal tie bars, 12 - constructional columns, 13 - frame columns, 14 - infill walls. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0035] Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "an", and "the" as used herein include plural forms. It should be further understood that the phrase "comprising" as used in the specification of the present application means that the features, integers, steps, operations, elements, and / or components exist, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0036] Those skilled in the art can understand that, unless otherwise defined, all the terms (including technical terms and scientific terms) used herein have the same meaning as that generally understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood as having meanings consistent with those in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as such in the embodiments of the present application.

[0037] The present invention provides a main structure construction method of structural columns without secondary anchoring and formwork support. The method replaces the anchoring process with pre-buried horizontal tie bars of frame columns and structural columns, thereby realizing synchronous formwork support and one-time concrete pouring of structural columns and main structure concrete, breaking the conventional construction method of structural column construction which requires waiting for the main structure concrete to be poured and then dismantling the formwork support frame before construction, avoiding secondary anchoring and pull-out tests required for anchoring construction, saving time required for anchoring construction to wait for the main structure to reach the design strength and time required for anchoring glue to wait for the required solidification strength to be reached for anchoring pull-out tests, and saving construction costs for anchoring and pull-out tests, thereby avoiding the processes of secondary measurement and positioning, formwork support and concrete pouring, shortening construction intervals, saving construction period, reducing the risk of secondary construction, and improving the construction quality of one-time concrete forming.

[0038] Example 1:

[0039] like Figure 1 As shown, this embodiment provides a main structure construction method for structural columns without secondary reinforcement and formwork, including:

[0040] S100, installing the prefabricated structural column reinforcement on top of the lower structural column reinforcement provided on the lower floor slab according to the positioning of the structural column, and connecting the prefabricated structural column reinforcement and the lower structural column reinforcement by wire binding, and extending the top of the prefabricated structural column reinforcement into the beam and slab reinforcement of the upper floor slab, and then installing extruded panels on the upper surface and side surfaces of the contact surface between the prefabricated structural column reinforcement and the upper floor slab;

[0041] S200, based on step S100, the prefabricated structural column reinforcement and the upper floor slab are reinforced with formwork, and according to the position of the horizontal tie bars required for the infill wall masonry, the template is accurately positioned and holes are drilled, and the horizontal tie bars pass through the positioning holes on the template, penetrate the prefabricated structural column reinforcement, and pass through the positioning holes at the other end of the template, ensuring that the length of the horizontal tie bars exposed from the template meets the requirements of the infill wall masonry; the tension screws pass through the reinforcement holes on the template, penetrate the prefabricated structural column reinforcement, and are tightened with nuts to ensure that the structural column will not deform or the template will not expand during the pouring of concrete;

[0042] S300, pouring concrete for the structural columns, upper floor slabs, and frame columns based on step S200, removing the extruded panels one week after pouring, and roughening and washing the surfaces where the structural columns and upper floor slabs meet to ensure that adjacent concrete aggregates are exposed;

[0043] S400. Based on step S300, the area where the extruded board is removed is filled and poured with slightly expansive fine aggregate concrete of a higher grade to ensure that the slightly expansive fine aggregate concrete is tightly connected to the structural columns and the upper floor slabs. After the concrete is initially set, the formwork is removed to complete the construction of the structural columns.

[0044] Example 2

[0045] like Figure 2 Figure 3 As shown, based on Example 1, this embodiment provides a specific construction method for the main structure of a structural column without secondary reinforcement and formwork, including:

[0046] Phase 1: On the completed lower floor slab 1, the concrete that may be splashed on the lower structural column steel bars 2 is cleaned and straightened, and the part of the lower floor slab 1 that is in contact with the structural column 12 is roughened so that the concrete aggregate on the lower floor slab 1 is exposed, thereby increasing the adhesion between the lower floor slab 1 and the structural column 12.

[0047] The second stage: while constructing the formwork support frame of the upper floor slab 3, the prefabricated structural column steel bars 4 that have been prepared in advance in the steel bar processing plant are installed on the top of the lower structural column steel bars 2 according to the positioning of the structural column 12. The prefabricated structural column steel bars 4 and the lower structural column steel bars 2 are connected by wire binding, and the top of the prefabricated structural column steel bars 4 extends into the beam and slab steel bars of the upper floor slab 3.

[0048] The third stage: After the prefabricated structural column reinforcement 4 is installed, the extruded board 7 is installed on the upper surface and side surfaces where the prefabricated structural column reinforcement 4 contacts the upper floor slab 3. The specific installation method is to pass the extruded board 7 through the main reinforcement 5 of the prefabricated structural column reinforcement 4, close to the stirrups 6, and check whether the extruded board 7 is firmly installed to avoid displacement during concrete pouring.

[0049] The fourth stage: after the installation of the extruded sheet 7, the formwork of the constructional column 12 and the upper floor 3 is supported and reinforced, the horizontal tie 11 is accurately positioned and holed on the formwork 8 according to the position of the horizontal tie 11 required by the filling wall 14, the horizontal tie 11 is passed through the positioning hole on the formwork 8, the prefabricated constructional column steel 4 of the constructional column 12, and the positioning hole on the formwork 8 at the other end, and the length of the horizontal tie 11 exposed from the formwork 8 meets the requirements of the filling wall 14. In addition, the counter-pulling screw rod 9 is also passed through the reinforcing hole on the formwork 8, and is passed through the prefabricated constructional column steel 4 of the constructional column 12 and the reinforcing hole on the formwork 8 at the other end, and the two ends of the counter-pulling screw rod 9 are fastened by the nut 10 to ensure that the constructional column 12 will not be deformed or expanded during the pouring of concrete. Similarly, when the formwork of the frame column 13 is reinforced, the horizontal tie 11 is also embedded in the frame column 13 in the same way, so that the horizontal tie 11 is exposed outside the formwork 8 of the frame column 13, and the length meets the requirements of the filling wall 14. Finally, the overall formwork 8 support system of the upper floor 3 is reinforced and checked.

[0050] The fifth stage: after the formwork support system is checked, the constructional column 12 is poured with concrete together with the upper floor 3 and the frame column 13, and the pouring sequence is: first pouring the frame column 13, then pouring the upper floor 3, and finally pouring the constructional column 12. Before pouring the concrete, the water should be poured first to moisten, on the one hand to flush the wood chips, rust and other debris generated during the formwork 8 reinforcement process, and on the other hand to keep the surface of the formwork 8 and the bottom of the constructional column 12 and the frame column 13 moist to prevent the concrete from rapid water loss and affect the pouring quality. At the same time, at the bottom of the constructional column 12 and the frame column 13, 20-30mm of mortar with the same grade as the concrete should be poured first to make the joint, so that the coarse aggregate of the concrete at the bottom of the column is buffered to ensure the quality of pouring. It should be noted that in order to ensure that the force transmission system of the building structure is not changed, when pouring the constructional column 12, only the concrete needs to be poured to the side of the extruded sheet 7 close to the constructional column 12, and the concrete of the constructional column 12 and the upper floor 3 cannot be poured as a whole.

[0051] The sixth stage: after the concrete of the constructional column 12 and the upper floor 3 is poured, at least 7 days are waited for the settlement of the upper floor 3 to be uniform, and then the extruded sheet 7 is removed, and the surface of the constructional column 12 and the upper floor 3 is roughened and washed to ensure that the adjacent concrete aggregate is exposed and kept clean.

[0052] The seventh stage: the area where the extruded sheet 7 is removed is filled and poured with micro-expansion fine aggregate concrete with a higher grade, and the formwork, steel bar and concrete are hammered and inserted to ensure that the fine aggregate concrete is vibrated and compacted fully and connected closely with the constructional column 12 and the upper floor 3.

[0053] Phase 8: After filling and pouring fine aggregate concrete on the top of the structural column 12, the formwork 8 on the side of the structural column can be removed after the concrete has initially set. Note that the horizontal tie bars 11 should be protected from damage and their positions should not be shifted during removal. This completes the construction of the structural column.

[0054] While removing the formwork 8 of the structural columns 12, the formwork of the frame columns 13 and upper floor slab 3 is also removed. The sides of the structural columns 12 and frame columns 13 are cleaned and rinsed to ensure that there are no missing reinforcement, honeycombs, or rough surfaces on the surface. Furthermore, the infill wall 14 is constructed according to the drawing requirements. Note that the bottom of the infill wall 14 should be laid flat with two or three small bricks. The upper portion of the small bricks is then constructed with autoclaved aerated concrete blocks (according to the design drawing requirements). Staggered construction is important to control the quality of the construction and avoid blind, false, continuous, or transparent joints. During construction, the horizontal tie bars 11 embedded in the frame columns 13 and structural columns 12 should be connected to the horizontal joints of the infill wall to ensure the stability of the wall and the main structure. Finally, 14 days after the autoclaved aerated concrete blocks are laid, the top of the infill wall 14 is constructed with small bricks at an angle to complete the construction.

[0055] In the components used in the above construction method, the lower floor 1 is a building structure that has been poured and completed, which can be the ground floor of a building or the floor structure of the second floor and above of a building; the lower structural column reinforcement 2 is the exposed reinforcement at the top of the structural column 12 that has been poured and completed in the lower floor. The upper floor 3 is the building structure that is about to be constructed, which is poured with the structural column 12 between the upper floor and the lower floor; the prefabricated structural column reinforcement 4 is the structural column reinforcement that is made in advance according to the drawings in the reinforcement processing yard, which, compared with the traditional on-site binding method, improves the efficiency of production and installation and reduces the danger of on-site construction. The main reinforcement 5 is the vertical component of the prefabricated structural column reinforcement, which forms a structural column reinforcement frame with the stirrup 6. The stirrup 6 is the horizontal restraint component of the prefabricated structural column reinforcement 4, which forms a structural column reinforcement frame with the main reinforcement 5. The extruded board 7 is a common material on the construction site, which is full name extruded polystyrene foam board, has the characteristics of high compression resistance, light weight, non-water absorption, air tightness, wear resistance, and degradation resistance, and is light in texture, easy to use, and has good corrosion resistance, and is commonly used for thermal insulation construction. The formwork 8 is a common construction material on the construction site, which has wood formwork, steel formwork, aluminum formwork, etc. according to the material, the formwork used in the present application is the most common wood formwork, which can also use formwork of other materials according to the actual situation. The tension screw 9 is a common construction material on the construction site, which is a component used for supporting and fixing the formwork 8 in engineering construction, which is composed of a screw and two nuts arranged at both ends of the screw and threaded with the screw. The nut 10 is arranged at both ends of the formwork 8, which plays a role in fastening the tension screw 9 and the formwork 8, and constraining the formwork 8 from deforming under the external force generated by the concrete pouring. The horizontal tie reinforcement 11 is the reinforcement that ties the filler wall 14 and the concrete component together according to certain structural requirements. The structural column 12 is a column commonly used in frame (frame-shear) structures to enhance the overall stability and stability of the building, which is often connected with the filler wall 14 or the door and window, and does not bear the vertical load. The frame column 13 is a vertical support structure that bears the load transmitted by the beam and the plate and transmits the load to the foundation, which is the main vertical support structure. The filler wall 14 is a wall that plays a role in enclosure and separation in the frame (frame-shear) structure, the weight of which is borne by the beam column, and the filler wall does not bear the weight.

[0056] In summary, the method uses the pre-buried mode to replace the anchoring process of the horizontal tie bars of the frame column and the construction column, realizes the synchronous formwork of the construction column and the main structure concrete and one-time concrete pouring, breaks the conventional construction method of the construction column, avoids the secondary anchoring and the anchoring construction needs the pull-out test, saves the time of the anchoring construction needs the main structure to reach the design strength and the time of the anchoring construction needs to wait for the anchoring glue to solidify the strength to reach the requirement to do the anchoring pull-out test, saves the construction cost of the anchoring and the pull-out test, thereby avoids the process of the secondary measurement positioning, the formwork support and the concrete pouring, shortens the construction interval, saves the construction period, reduces the danger of the secondary construction, improves the construction quality of the one-time forming of the concrete.

[0057] It should be understood that although each step in the flowchart of the accompanying drawings is shown in sequence according to the indication of the arrow, these steps are not necessarily executed in sequence according to the indication of the arrow. Unless explicitly stated herein, the execution of these steps is not strictly limited in sequence, and they can be executed in other sequences. Moreover, at least part of the steps in the flowchart of the accompanying drawings can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or sub-steps or stages of other steps.

Claims

1. A method for constructing a main structure of a formwork construction column with no second time anchoring, characterized in that, Comprise: S100, install prefabricated construction column reinforcement according to the positioning of the construction column to the top of the lower layer construction column reinforcement provided on the lower floor, and connect the prefabricated construction column reinforcement and the lower layer construction column reinforcement by twisting wire binding, and extend the top of the prefabricated construction column reinforcement into the beam slab reinforcement of the upper floor, and then install the extruded plate on the upper surface and side surface of the contact surface between the prefabricated construction column reinforcement and the upper floor; S200, on the basis of step S100, support and reinforce the prefabricated construction column reinforcement and the upper floor, according to the required arrangement of the horizontal tieback reinforcement position for the infilled wall masonry, accurately position and open a hole on the formwork, the horizontal tieback reinforcement passes through the positioning hole on the formwork, penetrates the prefabricated construction column reinforcement, and passes through the positioning hole on the other end of the formwork, to ensure that the length of the horizontal tieback reinforcement exposed outside the formwork meets the requirements of the infilled wall masonry; the pull rod passes through the reinforcing hole on the formwork, penetrates the prefabricated construction column reinforcement, and is fastened by a nut to ensure that the construction column does not deform and swell during concrete pouring; S300, on the basis of step S200, pour concrete for the construction column, the upper floor and the frame column, remove the extruded plate after pouring for one week, and chisel and rinse the surface where the construction column and the upper floor meet, to ensure that the adjacent concrete aggregates are exposed; S400, on the basis of step S300, fill and pour the micro-expanding fine aggregate concrete with a higher standard in the area where the extruded plate is removed, to ensure that the micro-expanding fine aggregate concrete is closely connected with the construction column and the upper floor, and remove the formwork after the concrete is initially set, to complete the construction of the construction column.

2. The method according to claim 1, wherein Also include: Clean the concrete spattered on the lower layer construction column reinforcement on the lower floor in advance, straighten it, then chisel the part of the lower floor contacted by the construction column, so that the concrete aggregates on the lower floor are exposed, and increase the adhesion between the lower floor and the construction column.

3. The method according to claim 1, wherein the method is characterized by: The installation of the extruded plate in step S100 includes: passing the extruded plate through the main reinforcement of the prefabricated construction column reinforcement and tightly attaching it to the stirrup, checking whether the installation of the extruded plate is firm to avoid displacement during concrete pouring.

4. The method according to claim 1, wherein the method is characterized by: Step S200 further includes supporting and reinforcing the frame column and pre-burying the horizontal tieback reinforcement, so that the horizontal tieback reinforcement is exposed outside the formwork of the frame column, and the length meets the requirements of the infilled wall masonry.

5. The method according to claim 1, wherein the method is characterized in that, The sequence of concrete pouring in step S300 includes: pouring the frame column first, then pouring the upper floor, and finally pouring the construction column.

6. The method according to claim 5, wherein the method is characterized in that, The concrete should be pre-wetted before pouring in step S300, on the one hand to rinse the debris generated during the formwork reinforcement process, and on the other hand to keep the surface of the formwork and the bottom of the construction column and frame column wet, to prevent the concrete from affecting the pouring quality due to rapid water loss.

7. The method according to claim 5, wherein the method is characterized by: The concrete should be pre-wetted before pouring in step S300, on the one hand to rinse the debris generated during the formwork reinforcement process, and on the other hand to keep the surface of the formwork and the bottom of the construction column and frame column wet, to prevent the concrete from affecting the pouring quality due to rapid water loss.

8. The method of claim 5, wherein the method is characterized by: In the process of pouring the constructional column, in order to prevent the constructional column from being poured into an integral body with the upper floor, only the concrete is poured to the side of the extruded sheet close to the constructional column.

9. The method according to any one of claims 1-8, wherein the method is a method for constructing a main structure of a formwork column without secondary anchoring, characterized in that, The method also comprises the process of building the filling wall, and the horizontal tie bars embedded in the frame column and the constructional column are connected with the horizontal joints of the filling wall during the building process, so as to ensure the stability of the wall and the main body.

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