Formwork assembly for frame column pouring

Abstract

The formwork assembly comprises a column formwork sleeve and a plurality of sets of cross-shaped formwork tie frames fixedly arranged in the column formwork sleeve, and the height positions of the cross-shaped formwork tie frames correspond to the arrangement positions of tie bars of a to-be-constructed secondary structure masonry wall around a frame column. The cross-shaped template tie frame is used for providing a mounting position for tie bars after the template is removed; by the adoption of the formwork assembly for frame column pouring, the construction quality of the frame column can be guaranteed, flying dust pollution is reduced, and meanwhile the construction efficiency and the construction quality of secondary structure masonry wall tie bars around the frame column can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a formwork assembly for the casting of frame columns. Background Art

[0002] Frame columns are important vertical load-bearing members in building structures and are mainly used in frame structure systems. In building construction, frame columns are generally cast synchronously with beams and slabs and belong to the content of the main structure (primary structure) construction stage. After the construction of the frame columns is completed, it is often necessary to construct secondary structure masonry walls around the frame columns, such as partition walls and infill walls. Before the construction of the secondary structure masonry walls, it is necessary to construct tie bars on the frame columns to enhance the integrity and prevent the walls from cracking or collapsing. At present, the methods for constructing tie bars on frame columns mainly include the traditional post-implantation construction method and the non-implantation construction method. The traditional post-implantation construction method requires drilling holes in the frame columns, which may damage the main structure steel bars and is not conducive to ensuring the construction quality; in addition, drilling will cause dust pollution and the overall construction efficiency is low. At present, the common non-implantation construction methods mainly include the pre-buried tie bar method, the pre-buried iron piece + welding method, and the expansion bolt + tie piece method, etc. The pre-buried tie bar method is not conducive to the formwork reinforcement construction of the frame columns due to the long exposed tie bars. If the formwork reinforcement is not in place, the formwork explosion accident is likely to occur during the casting of the frame columns. In the pre-buried iron piece + welding method, the pre-buried iron pieces are generally fixed on the steel reinforcement cage of the frame column, which is inconvenient for reinforcement and is prone to displacement during concrete casting, and it is difficult to ensure the embedding accuracy of the pre-buried iron pieces. If the embedding position is offset, the rework cost is high. The expansion bolt + tie piece method needs to check the tensile pull-out force of the bolts and is generally only applicable to light block walls. Since it also requires scribing and drilling, it will cause dust pollution and the overall construction efficiency is low.

[0003] Therefore, it is necessary to provide a new device to facilitate ensuring the construction quality of the frame columns themselves, reducing dust pollution, and at the same time facilitating improving the construction efficiency and construction quality of the tie bars of the secondary structure masonry walls around the frame columns. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a formwork assembly for the casting of frame columns. By adopting this formwork assembly, it is possible to facilitate ensuring the construction quality of the frame columns themselves, reducing dust pollution, and at the same time facilitating improving the construction efficiency and construction quality of the tie bars of the secondary structure masonry walls around the frame columns.

[0005] To achieve the above object, the present invention provides the following technical solution: A formwork assembly for the casting of frame columns, including a column formwork sleeve and a plurality of cross-shaped formwork tie rods fixedly arranged in the column formwork sleeve respectively. The height positions of the plurality of cross-shaped formwork tie rods respectively correspond to the arrangement positions of the tie bars of the secondary structure masonry walls to be constructed around the frame columns, and the cross-shaped formwork tie rods are used to provide an installation position for the tie bars after formwork removal.

[0006] Further, connection blocks for increasing the contact area with the inner wall of the column formwork sleeve are fixedly connected to the four ends of the cross-shaped formwork tie rod respectively, and the connection blocks are abutted against the inner wall of the column formwork sleeve.

[0007] Further, the connection blocks and the column formwork sleeve are fixed by connection bolts. Threaded connection holes are provided on the connection blocks, and the connection bolts are inserted from the outside of the column formwork sleeve and then threadedly connected to the threaded connection holes.

[0008] Further, leak-proof sealant is smeared on the abutting surfaces of the connection blocks and the column formwork sleeve.

[0009] Further, the connection blocks and the cross-shaped formwork tie rods are fixedly connected by welding.

[0010] Further, the cross-shaped formwork tie rod includes a first tie rod and a second tie rod arranged in a cross.

[0011] Further, the first tie rod and the second tie rod are connected at the intersection point in a clamping manner.

[0012] Further, both the first tie rod and the second tie rod are made of solid steel bars.

[0013] Further, connection holes corresponding to the connection ends of the respective cross-shaped formwork tie rods are preset on the column formwork sleeve.

[0014] Further, the column formwork sleeve is formed by enclosing four wooden formworks.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] By adopting the formwork assembly for the casting of frame columns provided by the present invention, it is beneficial to ensure the construction quality of the frame columns themselves, reduce dust pollution, and at the same time, it is beneficial to improve the construction efficiency and construction quality of the tie bars of the secondary structure masonry walls around the frame columns, and has the advantages of stable construction quality, environmental protection and pollution-free, simple and efficient processes, etc. Specifically reflected in:

[0017] In terms of facilitating the quality assurance of the construction of frame columns: In the structure of this formwork component, multiple groups of cross-shaped formwork tie rods are provided, which can facilitate the uniform dispersion of stress in all directions, thereby improving the overall stiffness and stability of the column formwork sleeve. Furthermore, it can effectively enhance the ability of the column formwork sleeve to resist the lateral pressure of concrete, reduce the risk of formwork bulging, deformation or displacement, and is conducive to ensuring the casting quality of the frame column; during the subsequent construction of the tie bars for the secondary structure masonry walls, there is no need to drill and implant bars in the main body of the frame column, thus avoiding damage to the steel bars in the main structure of the frame column and facilitating the quality assurance of the construction of the frame column.

[0018] In terms of facilitating the construction efficiency and quality of the tie bars for the secondary structure masonry walls around the frame column: In the structure of this formwork component, the height positions of each group of cross-shaped formwork tie rods are ingeniously set to correspond to the layout positions of the tie bars for the secondary structure masonry walls to be constructed around the frame column. In this way, after the formwork sleeve is removed, the tie bars for the secondary structure masonry walls can be directly fixed and installed on the corresponding ends of the cross-shaped formwork tie rods, eliminating construction steps such as scribing and drilling in the traditional post-implantation bar construction method, thus facilitating the improvement of the construction efficiency of the tie bars; since the cross-shaped formwork tie rods are integrally embedded in the main structure of the frame column after the frame column is cast, the connection strength between the cross-shaped formwork tie rods arranged longitudinally and transversely and the frame column fully meets the strength requirements of the tie bar pull-out test, effectively ensuring the connection strength between the tie bars and the main body of the frame column and the construction quality of the tie bars; compared with traditional non-implantation bar construction methods such as embedded iron parts and expansion bolts, the process of conducting a pull-out test on the cross-shaped formwork tie rods can be omitted, which is also conducive to improving the construction efficiency of the tie bars; in the structure of this formwork component, since the cross-shaped formwork tie rods can be conveniently and stably fixed and installed on the column formwork sleeve and are basically not disturbed by the concrete pouring and displaced, the embedding position accuracy of the cross-shaped formwork tie rods in the frame column can be effectively guaranteed, thus facilitating the effective guarantee of the construction accuracy of the tie bars, reducing the risk and cost of rework, and ensuring the construction efficiency and quality of the tie bars.

[0019] In terms of reducing environmental pollution: By adopting this formwork component, the subsequent construction of the tie bars for the secondary structure masonry walls is a non-implantation bar construction method, without the need to drill holes in the frame column, reducing dust pollution.

[0020] In summary, by adopting the formwork component for the casting of frame columns provided by the present invention, it is not only conducive to the construction quality of the frame column, but also, by ingeniously arranging the cross-shaped formwork tie rods corresponding to the layout positions of the tie bars for the secondary structure masonry walls to be constructed around the frame column, the cross-shaped formwork tie rods play a multi-functional role; combining formwork reinforcement and tie bar construction simplifies the construction process; it can effectively guarantee the construction efficiency and quality of the subsequent tie bars; and it has good market promotion and application value.

[0021] Other advantages, objects and features of the present invention will be set forth to some extent in the following description, and to some extent, will be apparent to those skilled in the art from a review of the following, or may be learned from the practice of the present invention. The objects and other advantages of the present invention can be realized and obtained by the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Isometric structural schematic diagram of an embodiment of the present invention;

[0023] Figure 2 Cross-sectional structural schematic diagram of an embodiment of the present invention;

[0024] Figure 3 Isometric structural schematic diagram of the cruciform template tie rod 2;

[0025] Figure 4 Partial structural schematic diagram after installation of the tie bar in an embodiment of the present invention;

[0026] Figure 5 Isometric structural schematic diagram of the tie bar installed on the frame column in an embodiment of the present invention.

[0027] Reference numerals: 1-column form sleeve; 101-wood form; 1a-connection hole; 2-cruciform template tie rod; 201-first tie rod; 202-second tie rod; 3-frame column; 4-connection block; 4a-threaded connection hole; 5-connection bolt; 6-tie bar; 7-connection plate; 7a-elongated hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] Please refer to Figures 1-5, in this embodiment, a formwork assembly for the casting of frame columns is disclosed, which includes a column formwork sleeve 1 and multiple groups of cross-shaped formwork tie rods 2 fixedly arranged inside the column formwork sleeve 1 respectively. The height positions of the multiple groups of cross-shaped formwork tie rods 2 correspond to the layout positions of the tie bars 6 of the secondary structural masonry walls to be constructed around the frame column 3 respectively, and the cross-shaped formwork tie rods 2 are used to provide an installation position for the tie bars 6 after form removal. It can be understood that the column formwork sleeve 1 is adapted to the outer shape of the frame column to be cast, and common ones include rectangular tube or circular tube structures, etc. In this embodiment, the column formwork sleeve 1 adopts a rectangular tube structure formed by combining four precast formworks for the casting of rectangular frame columns. Of course, in other embodiments, the column formwork sleeve structure of the corresponding shape can be formed by splicing multiple boards according to the shape of the frame column to be cast. Of course, it can be understood that the four ends of the cross-shaped formwork tie rods 2 need to be fixedly connected to the inner wall of the column formwork sleeve 1 respectively to form a stable tying effect on the four sides of the column formwork sleeve 1. When constructing the secondary structural masonry walls around the frame column 3, tie bars 6 need to be set on the frame column 3 first to enhance the connection strength with the frame column 3. The tie bars 6 are usually set in multiple groups in the full height direction of the frame column 3, and the spacing of each group of tie bars 6 in the height direction is set according to the national standard of the corresponding type of masonry wall. In this embodiment, the number of the cross-shaped formwork tie rods 2 is equal to the number of tie bars 6 required for the construction of the secondary structural masonry wall on one side, and the height positions of each group of cross-shaped formwork tie rods 2 are set in one-to-one correspondence with the installation positions of each tie bar 6. The meaning that the cross-shaped formwork tie rods 2 are used to provide an installation position for the tie bars 6 after form removal is that the tie bars 6 can be directly fixedly connected to the corresponding ends of the cross-shaped formwork tie rods 2. Of course, it can be understood that the four ends of the cross-shaped formwork tie rods 2 correspond to the installation positions of the tie bars at the corresponding positions around the four sides of the frame column 3 respectively. Since the secondary structural masonry walls are basically symmetrically arranged around the frame column 3, during layout, the four ends of the cross-shaped formwork tie rods 2 are fixedly connected to the middle positions of the corresponding side formworks respectively. In this embodiment, each cross-shaped formwork tie rod 2 is linearly arranged at equal intervals along the height direction of the column formwork sleeve 1 according to the layout spacing of the tie bars 4. Of course, during building construction, it is not necessary to construct secondary structural masonry walls on each side around the frame column 3. Only the exposed ends of the cross-shaped formwork tie rods 2 on the side where the secondary structural masonry walls do not need to be constructed need to be treated with anti-corrosion. Of course, it can be understood that during the construction process, a reinforcement structure still needs to be set outside the column formwork sleeve 1, such as column hoops, wooden square back braces for reinforcement, etc. The same as the prior art, it will not be elaborated here.

[0030] By adopting the formwork assembly for the casting of frame columns provided in this embodiment, it is beneficial to ensure the construction quality of the frame column 3 itself, reduce dust pollution, and at the same time, it is beneficial to improve the construction efficiency and construction quality of the tie bars 6 of the secondary structural masonry walls around the frame column 3, and has the advantages of stable construction quality, environmental protection and pollution-free, simple and efficient processes, etc. Specifically reflected in:

[0031] In terms of facilitating the guarantee of the construction quality of frame columns: In the structure of this formwork component, multiple groups of cross-shaped formwork tie rods 2 are provided to facilitate the uniform dispersion of stress in all directions, thereby improving the overall stiffness and stability of the column formwork sleeve 1, and further effectively improving the ability of the column formwork sleeve 1 to resist the lateral pressure of concrete, reducing the risk of formwork bulging, deformation or displacement, and facilitating the guarantee of the casting and forming quality of the frame column 3; during the subsequent construction of the tie bars 6 of the secondary structure masonry wall, it is not necessary to drill holes and implant bars in the main body of the frame column 3, thus avoiding damage to the steel bars of the main structure of the frame column 3 and facilitating the guarantee of the construction quality of the frame column 3.

[0032] In terms of facilitating the improvement of the construction efficiency and construction quality of the tie bars 6 of the secondary structure masonry wall around the frame column 3: In the structure of this formwork component, by cleverly setting the height positions of each group of cross-shaped formwork tie rods 2 to correspond to the layout positions of the tie bars 6 of the secondary structure masonry wall to be constructed around the frame column 3, after the formwork sleeve 1 is removed, the tie bars 6 of the secondary structure masonry wall can be directly fixedly installed on the corresponding ends of the cross-shaped formwork tie rods 2, eliminating construction steps such as scribing and drilling in the traditional post-implantation bar construction method, thereby facilitating the improvement of the construction efficiency of the tie bars 6; since after the frame column 3 is cast, the cross-shaped formwork tie rods 2 are integrally embedded in the main structure of the frame column 3, the connection strength between the cross-shaped formwork tie rods 2 arranged longitudinally and transversely and the frame column 3 can fully meet the strength requirements of the pull-out test of the tie bars 6, effectively ensuring the connection strength between the tie bars 6 and the main body of the frame column 3 and guaranteeing the construction quality of the tie bars 6; compared with traditional non-implantation bar construction methods such as embedded iron parts and expansion bolts, the process of conducting a pull-out test on the cross-shaped formwork tie rods 2 can be omitted, which also facilitates the improvement of the construction efficiency of the tie bars 6; in the structure of this formwork component, since the cross-shaped formwork tie rods 2 can be conveniently and stably fixedly installed on the column formwork sleeve 1 and are basically not displaced due to the disturbance of concrete pouring, the embedding position accuracy of the cross-shaped formwork tie rods 2 in the frame column can be effectively guaranteed, thereby facilitating the effective guarantee of the construction accuracy of the tie bars 6, reducing the risk of rework and rework costs, and thus guaranteeing the construction efficiency and construction quality of the tie bars 6.

[0033] In terms of reducing environmental pollution: By adopting this formwork component, the subsequent construction of the tie bars 6 of the secondary structure masonry wall is a non-implantation bar construction, without the need to drill holes in the frame column 3, reducing dust pollution.

[0034] In summary, by adopting the formwork assembly for the casting of frame columns provided by the present invention, not only can the construction quality of the frame column 3 be facilitated, but also, by skillfully arranging the positions of the cross-shaped formwork tie rods 2 corresponding to the tie bars 6 of the secondary structural masonry walls to be constructed around the frame column 3, the cross-shaped formwork tie rods 2 can perform multiple functions; combining formwork reinforcement and tie bar construction simplifies the construction process; it can effectively ensure the construction efficiency and construction quality of the subsequent tie bars 6; and it has good market promotion and application value.

[0035] In this embodiment, connection blocks 4 for increasing the contact area with the inner wall of the column form sleeve 1 are fixedly connected to the four ends of the cross-shaped formwork tie rod 2, and the connection blocks 4 abut against the inner wall of the column form sleeve 1. Specifically, the connection block 4 here is a circular plate, and the connection block 4 is fixedly welded to the cross-shaped formwork tie rod 2. By providing the connection blocks 4, it is beneficial to improve the connection stability between the cross-shaped formwork tie rod 2 and the column form sleeve 1, which is beneficial to better disperse the transmission of the concrete vibration force, thereby reducing the risk of local deformation at the abutting part between the cross-shaped formwork tie rod 2 and the column form sleeve 1, and further being beneficial to better ensuring the installation position accuracy of the cross-shaped formwork tie rod 2. At the same time, the connection block 4 can also play a role in enhancing the axial tensile strength of the cross-shaped formwork tie rod 2 after the casting of the frame column 3 is completed, thereby being beneficial to better ensuring the construction quality of the subsequent tie bars 6.

[0036] In this embodiment, the connection block 4 and the column form sleeve 1 are fixed by connection bolts 5. The connection block 4 is provided with threaded connection holes 4a, and the connection bolts 5 are inserted from the outside of the column form sleeve 1 and threadedly connected to the threaded connection holes 4a. The connection bolt connection method in this structural design is beneficial to ensuring the convenience of subsequent formwork removal construction. At the same time, through the tying action of the connection bolts 5, the connection and fixation between the connection block 4 and the column form sleeve 1 can be effectively ensured. Here, in order to enhance the connection stability of the connection block 4, a spacer structure is also provided between the outside of the column form sleeve 1 and the connection bolts 5. At the same time, here, the threaded connection holes 4a can directly serve as the connection holes for the tie bars 6 after formwork removal, and no welding and hot work construction are required, which is beneficial to further improving the construction efficiency of the subsequent tie bars 6.

[0037] In this embodiment, a leak-proof sealant is applied to the abutting surface between the connection block 4 and the column form sleeve 1. By applying the leak-proof sealant to the abutting surface between the connection block 4 and the column form sleeve 1, the risk of slurry leakage at this connection part can be reduced. Specifically, polyurethane sealant is used here, and polyurethane sealant has good bonding effects on both metals and woods and has good leak-proof effects.

[0038] In this embodiment, the connecting block 4 is fixedly welded to the cruciform formwork tie rod 2. The welded fixation has good connection strength and high connection reliability. The connecting block 4 and the cruciform formwork tie rod 2 are separately manufactured and then welded together, which can facilitate the material usage of the formwork tie rod 2 and save the manufacturing cost.

[0039] In this embodiment, the cruciform formwork tie rod 2 includes a first tie rod 201 and a second tie rod 202 arranged in a cruciform intersection; specifically, the first tie rod 201 and the second tie rod 202 can be made of steel bars or steel pipes, etc. Using a rod-shaped structure, the structure is simple, the material usage is small, which is conducive to saving the manufacturing cost.

[0040] In this embodiment, the first tie rod 201 and the second tie rod 202 are connected by a clamping method at the intersection point. Specifically, clamping groove structures are respectively provided at the middle positions of the first tie rod 201 and the second tie rod 202. During use, the first tie rod 201 and the second tie rod 202 can be directly clamped through the clamping groove structures. By adopting the clamping connection method, the installation convenience is good, which is conducive to improving the formwork closing installation efficiency of the column formwork sleeve 1.

[0041] In this embodiment, both the first tie rod 201 and the second tie rod 202 are made of solid steel bars. Using steel bars, the material is convenient to obtain. The solid steel bars can avoid the occurrence of pouring hollowing phenomenon, which is conducive to ensuring the pouring quality.

[0042] In this embodiment, connection holes 1a corresponding to the connection ends of each cruciform formwork tie rod 2 are preset on the column formwork sleeve 1. Of course, it can be understood that the positions of the connection holes 1a respectively correspond to the layout positions of the tie bars 6 of the secondary structure masonry wall to be constructed around the frame column 3. The connection holes 1a are preset and processed according to the design positions of the construction drawings of the tie bars 6, which can facilitate ensuring the position accuracy of the connection holes 1a, and thus is conducive to ensuring the position accuracy of the subsequent cruciform formwork tie rod 2 and improving the on-site construction efficiency. During specific use, the bolts pass through the connection holes 1a and are fixedly connected to the corresponding ends of the cruciform formwork tie rod 2.

[0043] In this embodiment, the column formwork sleeve 1 is formed by enclosing four wooden formboards 101. Using the material of the wooden formboards 101 is conducive to saving the construction material cost.

[0044] The formwork assembly for frame column pouring in this embodiment can be implemented and applied according to the following construction process:

[0045] S1: Construction preparation, including:

[0046] Technical preparation: Familiarize with the drawings, construction plan, technical disclosure, etc.;

[0047] Material preparation: Concrete, steel bars, each sub-component of the above-mentioned prefabricated formwork components, curing materials, etc.;

[0048] Tool preparation: Vibrating rods, shovels, lighting equipment (for night construction), etc.;

[0049] Personnel preparation: The operating workers are trained in place and the division of labor is clear;

[0050] Site preparation: Clean the inside of the formwork, fully moisten the formwork, clean the surface of the steel bars, set up a reliable operating platform or scaffolding, etc.

[0051] The construction preparation in step S1 is basically the same as that of the existing frame columns, and will not be elaborated here.

[0052] S2: Steel bar binding and installation: When binding and installing steel bars, the binding positions of the vertical bars and horizontal bars need to be noted to avoid the installation positions of the cross-shaped formwork tie rods 2 so as not to interfere with the installation of the cross-shaped formwork tie rods 2;

[0053] S3: Formwork component installation: including: First, slide out the formwork installation positioning line on the foundation according to the design drawing; for the convenience of distinction and description, the four wooden formworks 101 of the column formwork sleeve 2 are respectively denoted as the first formwork, the second formwork, the third formwork and the fourth formwork; then, respectively fixedly connect multiple first tie rods 201 to the first formwork; then, based on the drawn formwork installation positioning line, install the first formwork first; then install the second formwork adjacent to the first formwork; then, respectively fixedly install multiple second tie rods 202 at the respective connection holes 1a on the first formwork and form a cross-shaped formwork tie rod 2 with the corresponding first tie rods 201 at the corresponding positions; finally, complete the butt joint installation of the third formwork and the fourth formwork respectively; after all four wooden formworks 101 are closed, complete the reinforcement construction outside the column formwork sleeve 1, such as using column hoops, wooden square back ribs for fixation, etc. The reinforcement construction outside the column formwork sleeve 1 is consistent with the reinforcement method of the existing frame column formwork and is the prior art, which will not be elaborated here.

[0054] S4: Concrete pouring.

[0055] S5: Formwork removal.

[0056] Here, the concrete pouring in step S4 and the formwork removal in step S5 are basically the same as the existing construction processes of pouring and formwork removal, and will not be elaborated here.

[0057] S6: Install the tie bars: In this embodiment, each group of tie bars 6 is set to two, and the two are welded to a connecting plate 7 to form a tie bar assembly. Then, the connecting plate 7 is directly fixedly connected to the threaded connection hole 4a on the connection block 4 through the connecting bolt 5. The connecting bolt 5 is tightened by a torque wrench, and it is necessary to ensure that the torque of each connecting bolt 5 is qualified to ensure the connection stability of the connecting plate 7. To facilitate the alignment of the tie bars 6 with the block joints of the masonry wall, a waist-shaped hole 7a with a length arranged along the height direction is also provided on the connecting plate 7, which can finely adjust the height position of the tie bars 6, thereby facilitating better improvement of the construction quality and construction efficiency of the secondary structure masonry wall.

[0058] S7: Complete the construction of the secondary structure masonry wall on the corresponding side. The construction of the secondary structure masonry wall is the same as the prior art and will not be elaborated here.

[0059] Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A formwork component for the casting of frame columns, characterized in that: It includes a column formwork sleeve and multiple groups of cross-shaped formwork tie rods fixedly arranged in the column formwork sleeve respectively. The height positions of the multiple groups of cross-shaped formwork tie rods correspond to the arrangement positions of the tie bars of the secondary structure masonry walls to be constructed around the frame column, and the cross-shaped formwork tie rods are used to provide an installation position for the tie bars after form removal.

2. The formwork assembly for the casting of frame columns according to claim 1, wherein: Connection blocks for increasing the contact area with the inner wall of the column formwork sleeve are fixedly connected to the four ends of the cross-shaped formwork tie rod respectively, and the connection blocks abut against the inner wall of the column formwork sleeve.

3. The formwork assembly for the casting of frame columns according to claim 2, characterized in that: The connection block and the column formwork sleeve are fixed by connection bolts. The connection block is provided with threaded connection holes, and the connection bolts are inserted from the outside of the column formwork sleeve and threadedly connected with the threaded connection holes.

4. The formwork assembly for the casting of frame columns according to claim 2, characterized in that: A leak-proof sealant is applied to the abutting surface between the connection block and the column formwork sleeve.

5. The formwork assembly for the casting of frame columns according to claim 2, characterized in that: The connection block and the cross-shaped formwork tie rod are fixedly connected by welding.

6. The formwork assembly for the casting of frame columns according to claim 1, wherein: The cross-shaped formwork tie rod includes a first tie rod and a second tie rod arranged in a cross.

7. The formwork assembly for the casting of frame columns according to claim 6, characterized in that: The first tie rod and the second tie rod are connected at the intersection point in a clamping manner.

8. The formwork assembly for frame column pouring according to claim 6, characterized in that: Both the first tie rod and the second tie rod are made of solid steel bars.

9. The formwork assembly for the casting of frame columns according to claim 1, wherein: Connection holes corresponding to the connection ends of each cross-shaped formwork tie rod are preset on the column formwork sleeve.

10. The formwork assembly for the casting of frame columns according to claim 1, characterized in that: The column formwork sleeve is formed by enclosing four wooden formworks.

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