Fabricated concrete formwork column construction method

Abstract

The invention belongs to the field of prefabricated component constructional engineering, and particularly relates to a fabricated concrete formwork column construction method which comprises the following steps: S100, construction preparation; s200, a beam and slab supporting system is installed; s300, a formwork column is installed; s400, a formwork column temporary support is installed, the formwork column temporary support comprises four steel pipes, and the four steel pipes connect the four faces of the formwork column with the beam and slab supporting system correspondingly; s500, concrete pouring is conducted in the formwork column; and S600, beam slab concrete pouring is conducted. According to the method, the beam and slab supporting system and the formwork column are installed firstly, then the four steel pipes are adopted to fixedly connect the four faces of the formwork column with the beam and slab supporting system, supporting of the formwork column is formed, temporary inclined supporting of the formwork column in the prior art is replaced, temporary supporting of the formwork column and the beam and slab supporting system are integrated, the site space is not occupied, and the formwork column supporting system is convenient to use. The problem that in the prior art, a formwork column temporary inclined support is large in occupied area can be effectively solved, and the supporting function is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of prefabricated component construction engineering, and particularly relates to a construction method of a fabricated concrete formwork column. BACKGROUND

[0002] The formwork column is a new type of vertical prefabricated component, which connects a formwork, a steel reinforcement protective layer, a steel reinforcement cage and mechanical and electrical pipelines into an integrated hollow prefabricated component. The hollow cavity greatly reduces the weight of the prefabricated component, reduces the burden of transportation and installation, and saves the amount of site labor and formworks. The surface is smooth and free of plastering, and the formwork column is a new favorite vertical prefabricated component.

[0003] At present, the construction sequence of the fabricated concrete formwork column in the construction technology is construction preparation, installation of the formwork column, installation of temporary inclined supports of the formwork column, erection of a beam slab support system, installation of beam slab formworks, installation of beam slab steel reinforcements, formwork column cavity concrete pouring and beam slab concrete pouring. Compared with the traditional cast-in-place concrete structure, the fabricated concrete formwork column structure has an additional construction process of installing temporary inclined supports of the formwork column, that is, adjustable temporary support fixing measures are arranged in four directions after the formwork column is installed in place, and each direction has not less than two constraint points, and verticality and torsion adjustment should be performed. Moreover, the overall installation of the temporary supports occupies a very large space, occupies 2.5m-3.5m of space around each formwork column, and affects the erection of the subsequent beam slab support system, reduces the construction efficiency and is not conducive to the control of the construction period. Moreover, the mechanical connection between the exposed steel reinforcement at the bottom of the formwork column and the floor embedded steel reinforcement often has a problem that the embedded longitudinal steel reinforcement and the exposed longitudinal steel reinforcement of the formwork column are not on the same verticality, which makes it difficult to align one by one during installation. SUMMARY

[0004] The application provides a construction method of a fabricated concrete formwork column, which aims to at least solve one of the above technical problems.

[0005] In one aspect, the application provides a construction method of a fabricated concrete formwork column, characterized in that the method comprises the following steps: S100, construction preparation; S200, installation of a beam slab support system; S300, installation of a formwork column; S400, installation of temporary supports of the formwork column, the temporary supports of the formwork column comprising four steel pipes, and the four steel pipes connecting four surfaces of the formwork column and the beam slab support system, respectively; S500, formwork column cavity concrete pouring; S600, beam slab concrete pouring.

[0006] The method has the advantages that the beam slab support system and the formwork column are installed first, four steel pipes are used to fix and connect four surfaces of the formwork column with the beam slab support system, support for the formwork column is formed, the temporary inclined support of the formwork column in the prior art is replaced, the temporary support of the formwork column is integrated with the beam slab support system, no space is occupied on site, the problem that the temporary inclined support of the formwork column in the prior art occupies a large area can be effectively reduced, and the support function is met.

[0007] In the technical scheme of one embodiment, in the step S400, the four steel pipes are arranged in a "#" shape to surround and support the formwork column, and two ends of each of the steel pipes are fixedly connected with the beam slab support system.

[0008] In the technical scheme of one embodiment, in the step S400, the formwork column is temporarily supported by a plurality of groups of the temporary supports of the formwork column, and the plurality of groups of the temporary supports of the formwork column are arranged in layers.

[0009] In the technical scheme of one embodiment, the step S100 comprises: S101, embedding longitudinal reinforcement at a position of the formwork column before pouring concrete of a current floor slab, pouring concrete of the current floor slab, and then placing a positioning edge line of the formwork column on the floor slab which has been constructed.

[0010] In the technical scheme of one embodiment, the step S100 comprises: S102, manufacturing three steel reinforcement hole position plates which are completely identical, the steel reinforcement hole position plates having steel reinforcement hole positions matched with longitudinal reinforcement of the formwork column; the first steel reinforcement hole position plate being used for positioning the longitudinal reinforcement of the formwork column during production of the formwork column; the second steel reinforcement hole position plate being used for positioning longitudinal reinforcement at a top of a lower formwork column on site; and the third steel reinforcement hole position plate being used for adjusting perpendicularity of the embedded longitudinal reinforcement.

[0011] In the technical scheme of one embodiment, the step S300 comprises: S301, stopping lowering of the formwork column when the formwork column is lifted to a distance of 1 m from a floor surface of a construction floor, slowly lowering the formwork column after workers support and align the positioning edge line, and completing installation of the formwork column.

[0012] In the technical scheme of one embodiment, the step S300 comprises: S302, mechanically connecting the embedded longitudinal reinforcement and an exposed part of the longitudinal reinforcement of the formwork column by using a straight thread sleeve, first screwing the sleeve on the embedded longitudinal reinforcement, then aligning the exposed part of the longitudinal reinforcement of the formwork column with the sleeve, rotating the longitudinal reinforcement of the formwork column to slowly rotate into the sleeve, and making the longitudinal reinforcement of the formwork column and the embedded longitudinal reinforcement abut against each other at a middle position of the sleeve to be tightly connected and fastened.

[0013] In the technical scheme of one embodiment, the step S400 comprises: S401, after the elevation is confirmed to be correct, four steel pipes are used to hoop the formwork column from four directions at the first step crossbar and the top crossbar position of the beam slab support system, and right angle fasteners are used to connect the intersection of the steel pipe and the beam slab support system, and the whole forms the temporary support of the formwork column.

[0014] In an embodiment of the technical solution, the step S400 comprises: S402, after the temporary support of the formwork column is installed, first measure the inclination of the formwork column relative to the horizontal plane using a level, place the level at different positions of the formwork column, observe the bubble position on the level, and judge whether the formwork column needs to be corrected, adjust the perpendicularity of the formwork column by moving the steel pipe at the intersection of the steel pipe and the structure support system through the right angle fastener, fix the right angle fastener after the correction is completed, complete the hoisting and positioning of one formwork column, and continue the hoisting of other formwork columns in the same way.

[0015] In an embodiment of the technical solution, the step S500 comprises: S501, clean the floor slab at the foot of the formwork column, then install and fix the formwork template at the foot of the formwork column; S502, after the installation of the formwork template at the foot of the formwork column is completed, pour the concrete in layers from the upper opening of the formwork column.

[0016] In an embodiment of the technical solution, the step S600 comprises: after the pouring of the concrete of the formwork column is completed, then install the beam slab formwork and the steel bars, and after the acceptance is passed, pour the concrete of the beam slab.

[0017] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings in the present application are used to show the preferred embodiments, facilitate the understanding of various other advantages and benefits by those skilled in the art, and cannot be considered as limiting the present application. Moreover, the same reference numerals are used to represent the same parts in all the drawings.

[0019] Figure 1 Flowchart of the prefabricated concrete formwork column construction method.

[0020] Figure 2 Cross-sectional view of the formwork column using the prefabricated concrete formwork column construction method.

[0021] Figure 3 Elevation view of the formwork column using the prefabricated concrete formwork column construction method.

[0022] Figure 4 This is a schematic diagram of the rebar hole plate.

[0023] Figure 5 A site photo showing temporary diagonal supports for existing formwork columns.

[0024] Figure 6 Second on-site photo of temporary diagonal supports for existing formwork columns.

[0025] The attached diagrams are labeled as follows: 1. Beam and slab support system; 2. Formwork column; 3. Temporary support for formwork column; 4. Formwork; 5. Beam and slab; 6. Rebar hole plate; 7. Rebar hole. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of this application, "multiple" means two or more (including two), unless otherwise explicitly specified. Technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the embodiments of this application and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0029] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0030] See Figure 5 and Figure 6 Currently, the construction sequence for prefabricated concrete formwork columns involves the following steps: construction preparation, installation of formwork columns, installation of temporary diagonal supports for the formwork columns, erection of the beam and slab support system, installation of beam and slab formwork, installation of beam and slab reinforcement, pouring of concrete into the cavity of the formwork column, and pouring of beam and slab concrete. Compared with traditional cast-in-place concrete structures, prefabricated concrete formwork column structures have an additional step of installing temporary diagonal supports for the formwork columns. To stabilize the formwork columns, adjustable temporary supports must be installed in four directions after the columns are in place, with at least two constraint points in each direction, and adjustments for verticality and torsion must be made. Furthermore, the temporary supports occupy a significant amount of space, taking up 2.5m-3.5m of space around each formwork column, which impacts the subsequent erection of the beam and slab support system, reduces construction efficiency, and hinders schedule control.

[0031] See Figures 1-4 This application provides an embodiment of a prefabricated concrete formwork column construction method, characterized by the following steps: S100, Construction Preparation: S101. Before pouring the current floor slab concrete, pre-embed the longitudinal reinforcing bars at the formwork column 3. Then pour the current floor slab concrete and mark the positioning line of formwork column 3 on the completed floor slab according to the positioning axis. Check and correct the pre-embedded longitudinal reinforcing bars of the mechanical connection between the upper and lower floors, confirm the number, and have technicians check the model, size, and appearance quality of formwork column 2, and observe whether there are cracks or damage.

[0032] In one embodiment of the technical solution, step S100 includes: S102. According to the specifications, quantity and protective layer thickness of the longitudinal reinforcement of the formwork column 2 in the design drawings, manufacture three identical reinforcement hole plates 6. The reinforcement hole plates 6 have reinforcement holes 7 that match the longitudinal reinforcement of the formwork column 2. The first rebar hole plate 6 is used to position the longitudinal rebars of the mold column 2 during production, ensuring that the position of the reserved holes for the bottom longitudinal rebars of the produced mold column 2 is consistent with the hole plate. The second piece is used to position the longitudinal reinforcement at the top of the lower formwork column 2 on site. After the longitudinal reinforcement at the top of the lower formwork column 2 is installed, the outline of the formwork column 2 is drawn according to the drawings. Then, the reinforcement hole plate 6 is welded to the position of the lower formwork column 2. Finally, the reinforcement is inserted into the reinforcement hole 7 and welded to fix it, with a length of 20cm protruding. The third piece is used to adjust the verticality of the embedded longitudinal reinforcement. After the current floor slab concrete is poured, the last piece of reinforcement hole plate 6 is used to adjust the verticality of the embedded longitudinal reinforcement caused by the construction. Assuming that the reinforcement hole plate 6 is the formwork column 2, it is placed on the embedded longitudinal reinforcement from top to bottom. The verticality of the embedded longitudinal reinforcement is adjusted until the hole plate can fall freely and fit the embedded longitudinal reinforcement. If the reinforcement hole plate 6 can pass through the embedded longitudinal reinforcement normally, it means that the verticality of the embedded longitudinal reinforcement meets the requirements, and the embedded longitudinal reinforcement and the exposed longitudinal reinforcement of the formwork column 2 can be quickly aligned one by one.

[0033] S200, Beam and Slab Support System 1 Installation: Place the base, uprights, longitudinal and transverse ground sweeping bars, etc. at the corresponding position of the current floor slab, and install uprights, horizontal bars and scissor braces and other reinforcement measures layer by layer upwards until the design height is reached. Finally, install the top support and adjust the height of the top support according to the design elevation to form the beam and slab support system 1, and install the formwork 4 on the beam and slab support system 1.

[0034] S300, Mold Column 2 Installation: S301. When the formwork column 2 is hoisted to 1m from the construction floor level, the descent is stopped. After the installation workers straighten it and align it with the positioning line, it is slowly lowered (ensuring that the pre-embedded steel bars of the lower layer are aligned with the exposed steel bars of the formwork column), thus completing the installation of formwork column 2.

[0035] S302. The exposed part of the pre-embedded longitudinal steel bar and the longitudinal steel bar of the formwork column 2 are mechanically connected by a straight threaded sleeve. First, put the sleeve on the pre-embedded longitudinal steel bar and tighten it. Then, align the exposed part of the longitudinal steel bar of the formwork column 2 with the sleeve, rotate the longitudinal steel bar of the formwork column 2 to slowly screw it into the sleeve, so that the longitudinal steel bar of the formwork column 2 and the pre-embedded longitudinal steel bar are pressed against each other in the middle of the sleeve, and the connection is firm.

[0036] S400, Temporary Support 3 for Formwork Columns is installed. Temporary Support 3 for Formwork Columns includes four steel pipes, which connect the four sides of the formwork column 2 to the beam-slab support system 1. Specifically, S401. After confirming the elevation is correct, four steel pipes are used to clamp the formwork column 2 from four directions at the first and top horizontal bars of the beam-slab support system 1. Right-angle fasteners are used to connect the steel pipes to the beam-slab support system 1, forming the temporary support 3 of the formwork column 2.

[0037] After the temporary support 3 for the formwork column S402 is installed, first use a level to measure the inclination of the formwork column 2 relative to the horizontal plane. Place the level at different positions of the formwork column 2 and observe the position of the bubble on the level to determine whether the formwork column 2 needs to be corrected. Adjust the verticality of the formwork column 2 by moving the steel pipe through the right-angle fastener at the intersection of the steel pipe and the structural support system. After the correction is completed, fix the right-angle fastener to complete the hoisting and positioning of one formwork column 2. Continue the hoisting of other formwork columns 2 in the same way.

[0038] In some embodiments, four steel pipes are configured in a "#" shape to surround and support the formwork column 2, and both ends of each steel pipe are fixedly connected to the beam-slab support system 1.

[0039] In some embodiments, the mold column 2 is temporarily supported by multiple sets of temporary mold column supports 3, which are arranged in upper and lower layers.

[0040] S500, concrete pouring inside the formwork column 2: S501. Clean the floor slab at the base of column 2 of the formwork to ensure there are no debris, and then install and fix the formwork at the base of column 2 of the formwork.

[0041] S502. After the column base formwork is installed, concrete is poured in layers from the top of the formwork column 2.

[0042] S600, Beam and Slab Concrete Pouring: After the concrete pouring of the formwork column 2 is completed, the formwork 4 and reinforcement of beam and slab 5 will be installed. After acceptance, the concrete pouring of beam and slab 5 will be carried out.

[0043] The above method involves first installing the beam-slab support system 1 and the formwork column 2, and then using four steel pipes to fix the four sides of the formwork column 2 to the beam-slab support system 1 to form a support for the formwork column 2. This replaces the temporary diagonal support of the formwork column in the prior art, and integrates the temporary support 3 of the formwork column with the beam-slab support system 1. This method does not occupy site space and can effectively reduce the problem of large area occupation of the temporary diagonal support of the formwork column in the prior art, while still satisfying its support function.

[0044] In summary, the innovative aspects of this invention are as follows: 1) By constructing the beam and slab support system 1 first and then installing the formwork column 2, firstly, it can quickly provide a working surface for subsequent processes such as formwork 4 installation, thereby shortening the construction period; secondly, it can serve as a platform for releasing the hook at a high position when hoisting the formwork column 2, thereby ensuring the safety of personnel operation.

[0045] 2) By using four steel pipes to connect the formwork column 2 to the beam and slab support system 1 to replace the temporary diagonal support of the formwork column 2, firstly, it avoids the need to pre-embed support nuts on the formwork column 2, thus maintaining the integrity of the formwork column 2 structure; secondly, it solves the problem that the temporary diagonal support takes up a lot of space when installed as a whole, which affects the subsequent erection of the beam and slab support system 1, thereby improving construction efficiency.

[0046] 3) By integrating the beam-slab support system 1 with the temporary support of the formwork column 2, firstly, the formwork column 2 can be temporarily fixed before the concrete is poured, achieving the effect of stabilizing the formwork column 2 and assisting in correction. Secondly, after the formwork column 2 is poured, it can serve as a column-holding structure for the beam-slab support system 1, effectively limiting the horizontal displacement and swaying of the beam-slab support system 1 and improving the overall stability of the beam-slab support system 1.

[0047] 4) By using three identical steel bar hole plates 6, the spacing of the longitudinal steel bars of the mold column 2 produced in the factory is consistent with that of the pre-embedded longitudinal steel bars on site, which solves the problem that it is difficult to align the pre-embedded longitudinal steel bars with the exposed longitudinal steel bars of the mold column 2 one by one, and achieves the effect of rapid positioning and placement of the mold column 2.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for constructing prefabricated concrete formwork columns, characterized in that, The method comprises the following steps: S100, construction preparation; S200, installation of beam-slab support system (1); S300, installation of formwork column (2); S400, installation of formwork column temporary support (3), which comprises four steel pipes, and the four steel pipes are connected with four sides of the formwork column (2) and the beam-slab support system (1) respectively; S500, pouring of concrete in the formwork column (2); S600, pouring of beam-slab concrete.

2. The fabricated concrete formwork column construction method according to claim 1, characterized by: In the step S400, the four steel pipes are arranged in a "#" shape to surround and support the formwork column (2), and the two ends of each steel pipe are fixedly connected with the beam-slab support system (1).

3. The fabricated concrete formwork column construction method according to claim 1 or 2, characterized by: The formwork column (2) is temporarily supported by a plurality of groups of formwork column temporary supports (3) arranged in layers.

4. The fabricated concrete formwork column construction method according to claim 1, characterized by: The step S100 comprises: S101, embedding longitudinal steel bars at the embedded formwork column (3) before pouring the current floor slab concrete, pouring the current floor slab concrete, and then placing the formwork column (3) positioning edge line on the completed floor slab according to the positioning axis.

5. The fabricated concrete formwork column construction method as claimed in claim 4, wherein: The step S100 comprises: S102, manufacturing three steel bar hole position plates (6) which are exactly the same, and the steel bar hole position plate (6) has steel bar hole positions (7) matched with the longitudinal steel bars of the formwork column (2); the first steel bar hole position plate (6) is used for positioning the longitudinal steel bars of the formwork column (2) during production of the formwork column (2); the second steel bar hole position plate (6) is used for positioning the longitudinal steel bars at the top of the lower formwork column (2) on site, and the third steel bar hole position plate (6) is used for adjusting the perpendicularity of the embedded longitudinal steel bars.

6. The prefabricated concrete formwork column construction method according to claim 1, wherein: S301, the formwork column (2) is hoisted to a position 1m away from the construction floor, and then the lowering is stopped, the installation worker aligns the positioning edge line, and then the formwork column (2) is slowly lowered to complete the installation; S302, the embedded longitudinal steel bar is mechanically connected with the exposed part of the longitudinal steel bar of the formwork column (2) by using a straight thread sleeve, the sleeve is first sleeved on the embedded longitudinal steel bar and tightened, then the exposed part of the longitudinal steel bar of the formwork column (2) is aligned with the sleeve, the longitudinal steel bar of the formwork column (2) is rotated to slowly rotate into the sleeve, and the longitudinal steel bar of the formwork column (2) and the embedded longitudinal steel bar are tightly pressed against each other at the middle position of the sleeve, and the connection is fastened.

7. The fabricated concrete formwork column construction method as claimed in claim 1, wherein: The step S400 comprises: S401, four steel pipes are used to clamp the formwork column (2) from four directions at the first horizontal rod and the top horizontal rod of the beam-slab support system (1), and right-angle fasteners are used to connect the intersection of the steel pipes and the beam-slab support system (1), and the formwork column temporary support (3) of the formwork column (2) is formed as a whole.

8. The fabricated concrete formwork column construction method as claimed in claim 7, wherein: The step S400 comprises: S402, after the installation of the formwork column temporary support (3), first measure the inclination of the formwork column (2) relative to the horizontal plane using a level, place the level at different positions of the formwork column (2), observe the bubble position on the level, determine whether the formwork column (2) needs to be corrected, adjust the perpendicularity of the formwork column (2) by moving the steel pipe at the right angle fastener intersection between the steel pipe and the structure support system, fix the right angle fastener after the correction is completed, complete the hoisting and positioning of one formwork column (2), and continue the hoisting of other formwork columns (2) by the same steps.

9. The fabricated concrete formwork column construction method as claimed in claim 1, wherein: The step S500 comprises: S501, clean the floor slab at the foot of the formwork column (2), then install and fix the formwork at the foot of the formwork column (2); S502, after the installation of the formwork at the foot of the formwork column (2) is completed, pour the concrete in layers from the upper opening of the formwork column (2).

10. The fabricated concrete formwork column construction method according to claim 9, wherein: The step S600 comprises: after the concrete pouring of the formwork column (2) is completed, then install the formwork (4) and the steel bars of the beam slab (5), and after the acceptance is qualified, pour the concrete of the beam slab (5).

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