Steel bar planting-free construction method for frame column side secondary structure masonry wall

Abstract

The invention discloses a steel bar planting-free construction method for a secondary structure masonry wall on the side of a frame column, which comprises the following construction steps: S1, prefabricating a template assembly of the frame column, the template assembly comprises a plurality of groups of cross-shaped template tie frames and four templates used for encircling to form a column die sleeve, a plurality of connecting positioning holes corresponding to the arrangement positions of the tie bars of the secondary structure masonry wall are preset in each formwork; s2, on-site installation of a formwork assembly: according to the positions of connecting positioning holes in a formwork, all the cross-shaped formwork pulling frames are fixedly installed in the column formwork sleeves correspondingly; s3, frame column concrete pouring; s4, removing the mold; s5, steel bar planting-free construction of the tie bars is directly completed through the exposed ends of the cross-shaped formwork tie frames; s6, secondary structure masonry wall construction is completed; by the adoption of the construction method, 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 the frame column tie bars can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a construction method for implanting-free construction of secondary structural masonry walls on the side of frame columns. Background Art

[0002] As a core vertical load-bearing member in a building structure, a frame column plays an important role in load transfer in a frame structure system. In the conventional construction process, a frame column is usually cast in place synchronously with main structures such as beams and slabs. However, after the main structure construction is completed, it is often necessary to add secondary structural masonry walls around the frame column, such as various non-load-bearing walls like partition walls and infill walls. To ensure the reliable connection between these secondary structures and the main structure, the current code requires the installation of tie bars on the frame column.

[0003] Currently, there are mainly two construction methods for tie bars in the industry: the traditional post-implantation technology and the implanting-free technology. The traditional post-implantation technology has many drawbacks: drilling operations may not only damage the main bars in the column, affecting the structural safety, but also generate a large amount of construction dust, causing serious environmental pollution. At the same time, the processes such as drilling, hole cleaning, and glue injection are cumbersome, significantly reducing the construction efficiency. Although the existing implanting-free technologies avoid drilling operations, they still have their own technical defects: the method of pre-buried tie bars has the problem that the exposed bars are too long, which will interfere with formwork reinforcement and easily lead to formwork explosion accidents during concrete pouring; the method of welding pre-buried iron parts has the problem that it is difficult to control the positioning accuracy, and the rework cost is high after the iron parts are displaced; the expansion bolt tie bar method is limited by mechanical properties and is only applicable to lightweight walls, and still requires drilling operations.

[0004] These existing technologies generally have common problems such as unstable construction quality, serious environmental pollution, complex processes and low efficiency. Especially in high-rise buildings and large-scale projects, these problems will significantly affect the construction progress and project quality. Therefore, it is urgent to develop a new type of implanting-free construction technology that can not only ensure the construction quality of the frame column main structure, but also effectively control environmental pollution, and at the same time significantly improve the construction efficiency and installation accuracy of secondary structural tie bars. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a construction method for implanting-free construction of secondary structural masonry walls on the side of frame columns, which has the advantages of stable construction quality, environmental protection and no pollution, simple and efficient processes, etc.

[0006] To achieve the above purpose, the present invention provides the following technical solution: a construction method for implanting-free construction of secondary structural masonry walls on the side of frame columns, including the following construction steps:

[0007] S1: Template components for precast frame columns. Among them, the template components include multiple groups of cross-shaped template tie rods and four templates used to enclose and form a column formwork sleeve. Multiple connection positioning holes corresponding to the layout positions of the tie bars of the secondary structure masonry wall are preset on each template;

[0008] S2: On-site installation of the template components: According to the positions of the connection positioning holes on the templates, fix and install each cross-shaped template tie rod in the column formwork sleeve respectively;

[0009] S3: Casting the concrete of the frame column;

[0010] S4: Demoulding;

[0011] S5: Use each cross-shaped template tie rod to directly complete the construction of the tie bars without implanting steel bars at the exposed ends of the cast frame column main body;

[0012] S6: Complete the construction of the secondary structure masonry wall.

[0013] Furthermore, the cross-shaped template tie rod includes a first tie rod and a second tie rod that are arranged in a cross and are clamped with each other.

[0014] Furthermore, both the first tie rod and the second tie rod are made of solid steel bars.

[0015] Furthermore, 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 template tie rod respectively, and the connection blocks are abutted against the inner wall of the column formwork sleeve.

[0016] Furthermore, the connection block and the column formwork sleeve are fixed by connection bolts. Threaded connection holes are provided on the connection block, and the connection bolts are inserted from the outside of the column formwork sleeve and then threadedly connected to the threaded connection holes.

[0017] Furthermore, leak-proof sealant is applied to the abutting surface between the connection block and the column formwork sleeve.

[0018] Furthermore, the connection block and the cross-shaped template tie rod are fixedly connected by welding.

[0019] Furthermore, the tie bars are arranged in groups of two. Connection plates are welded and fixed to the ends on the same side of the two tie bars, and the connection plates are fixedly connected to the corresponding connection blocks through connection bolts.

[0020] Furthermore, waist-shaped holes are provided on the connection plate and are arranged along the height direction for the connection bolts to pass through.

[0021] Furthermore, all four templates described in step S1 are wooden templates.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] By adopting the construction method of implant-free rebar for the secondary structural masonry wall on the side of the frame column provided by the present invention, it is beneficial to ensure the construction quality of the frame column itself, reduce dust pollution, and at the same time, it is beneficial to improve the construction efficiency and quality of the tie bars of the secondary structural masonry wall around the frame column. It has the advantages of stable construction quality, environmental protection and no pollution, simple and efficient processes, etc. Specifically, it is reflected in:

[0024] From the perspective of being beneficial to ensuring the construction quality of the frame column: In this formwork assembly structure, through the multiple groups of cross-shaped formwork tie racks provided, it is beneficial to evenly disperse stress to the surrounding, thereby improving the overall stiffness and stability of the column formwork sleeve, and further effectively improving the ability of the column formwork sleeve to resist the lateral pressure of concrete, reducing the risk of formwork bulging, deformation or displacement, and being beneficial to ensuring the casting and forming quality of the frame column; during the subsequent construction process of the tie bars of the secondary structural masonry wall, it is not necessary to drill holes and implant rebars in the main body of the frame column, thus avoiding damage to the steel bars of the main structure of the frame column and being beneficial to ensuring the construction quality of the frame column.

[0025] From the perspective of being beneficial to improving the construction efficiency and quality of the tie bars of the secondary structural masonry wall around the frame column: In this formwork assembly structure, by cleverly setting the height positions of each group of cross-shaped formwork tie racks to correspond to the layout positions of the tie bars of the secondary structural masonry wall to be constructed around the frame column respectively, after the formwork sleeve is removed, the tie bars of the secondary structural masonry wall can be directly fixedly installed on the corresponding ends of the cross-shaped formwork tie racks, saving construction steps such as marking and drilling in the traditional post-implantation rebar construction method, thus being beneficial to improving the construction efficiency of the tie bars; since after the frame column is cast, the cross-shaped formwork tie racks are integrally embedded in the main structure of the frame column, the connection strength between the vertically and horizontally arranged cross-shaped formwork tie racks and the frame column can fully meet 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 ensuring the construction quality of the tie bars; compared with traditional implant-free construction methods, such as embedded iron parts and expansion bolts, the process of conducting pull-out tests on the cross-shaped formwork tie racks can be omitted, which is also beneficial to improving the construction efficiency of the tie bars; in this formwork assembly structure, since the cross-shaped formwork tie racks can be conveniently and stably fixedly installed on the column formwork sleeve and are basically not disturbed by concrete pouring and displaced, this can effectively ensure the embedding position accuracy of the cross-shaped formwork tie racks in the frame column, thus being beneficial to effectively ensuring the construction accuracy of the tie bars, reducing the risk of rework and rework costs, and thus ensuring the construction efficiency and quality of the tie bars.

[0026] From the perspective of reducing environmental pollution: By adopting this formwork assembly, the subsequent construction of the tie bars of the secondary structural masonry wall is implant-free construction, without the need to drill holes in the frame column, reducing dust pollution.

[0027] 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 columns be facilitated, but also, by ingeniously arranging the positions of the cross-shaped formwork tie rods corresponding to the positions of the tie bars of the secondary structure masonry walls to be constructed around the frame columns, the cross-shaped formwork tie rods can perform multiple functions, combining formwork reinforcement and tie bar construction, simplifying the construction process; effectively ensuring the construction efficiency and quality of the subsequent tie bars; and having good market promotion and application value.

[0028] Other advantages, objects and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. The objects and other advantages of the present invention can be realized and obtained through the following specification. Brief Description of the Drawings

[0029] Figure 1 is the construction flow chart of the construction method proposed by the present invention;

[0030] Figure 2 is the axonometric structure diagram of an embodiment of the present invention;

[0031] Figure 3 is the cross-sectional structure diagram of an embodiment of the present invention;

[0032] Figure 4 is the axonometric structure diagram of the cross-shaped formwork tie rod;

[0033] Figure 5 is the partial structure diagram after the installation of the tie bar in an embodiment of the present invention;

[0034] Figure 6 is the axonometric structure diagram of the installation of the tie bar on the frame column in an embodiment of the present invention.

[0035] Reference numerals: 1-column formwork sleeve; 101-formwork; 1a-connection positioning hole; 2-cross-shaped formwork 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-oval hole. Detailed Embodiments

[0036] The following uses specific specific examples to illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation manners. 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 utility model. It should be noted that the diagrams provided in the following embodiments are only used to illustrate the basic concept of the present utility model. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0037] Please refer to Figures 1-5 , in this embodiment, a construction method for implanting-free reinforcement of a secondary structure masonry wall on the side of a frame column is disclosed, including the following construction steps:

[0038] S1: Prefabricate the formwork assembly of the frame column 3. Among them, the formwork assembly includes multiple groups of cross-shaped formwork tie rods 2 and four formworks 101 used to enclose and form a column formwork sleeve 1. A plurality of connection positioning holes 1a corresponding to the layout positions of the tie bars 6 of the secondary structure masonry wall are respectively preset on each formwork 101.

[0039] S2: Install the formwork assembly on site: According to the positions of the connection positioning holes 1a on the formwork 101, fix each cross-shaped formwork tie rod 2 in the column formwork sleeve 1 respectively. Specifically, the cross-shaped formwork tie rod 2 can be fixed to the formwork 101 by bolts to ensure that it does not displace during the concrete pouring process.

[0040] S3: Pour the concrete of the frame column 3; in this regard, it is necessary to pay attention to vibrating the concrete densely during the pouring process to avoid disturbing the cross-shaped formwork tie rods.

[0041] S4: Remove the formwork; when removing the formwork, it is necessary to operate carefully to avoid damaging the exposed ends of the cross-shaped formwork tie rods 2.

[0042] The concrete pouring in step S3 and the formwork removal in step S4 are basically the same as the existing construction processes of pouring and formwork removal, and will not be elaborated here.

[0043] S5: Use each cross-shaped formwork tie rod 2 to directly complete the implanting-free reinforcement construction of the tie bars at the exposed ends of the already poured frame column main body; for example, the tie bars can be directly welded or bolt-connected to the exposed ends of the cross-shaped formwork tie rods.

[0044] S6: Complete the construction of the secondary structure masonry wall. The construction of the secondary structure masonry wall is consistent with the prior art and will not be elaborated here.

[0045] In step S1, specifically, the template 101 can be a steel formwork or a wooden formwork, etc. The spacing between the connecting positioning holes 1a is determined according to the specified spacing of the masonry wall tie bars 6. The connecting positioning holes 1a are prefabricated and processed according to the designed positions on the construction drawings of the tie bars 6, which is conducive to ensuring the position accuracy of the connecting positioning holes 1a, thereby facilitating the guarantee of the position accuracy of the subsequent cross-shaped formwork tie frame 2 and improving the on-site construction efficiency. In a preferred embodiment, the tie bars 6 are fixedly connected to the corresponding ends of the cross-shaped formwork tie frame 2 after passing through the connecting positioning holes 1a by bolts.

[0046] It can be understood that the column formwork sleeve 1 here is adapted to the outer shape of the frame column to be poured, and common ones include a rectangular cylinder or a circular cylinder structure, etc. In this embodiment, the column formwork sleeve 1 adopts a rectangular cylinder structure formed by assembling four prefabricated formworks for pouring a rectangular frame column. Of course, in other embodiments, the column formwork sleeve structure of the corresponding shape can be formed by splicing multiple plates according to the shape of the frame column to be poured. Of course, it can be understood that the four ends of the cross-shaped formwork tie frame 2 need to be fixedly connected to the inner wall of the column formwork sleeve 1 respectively to form a stable tie effect on the four sides of the column formwork sleeve 1. When constructing the secondary structure masonry wall around the frame column 3, it is necessary to first set the tie bars 6 on the frame column 3 to enhance the connection strength with the frame column 3. The tie bars 6 are usually arranged in multiple groups in the full height direction of the frame column 3, and the spacing between the groups of tie bars 6 in the height direction is set according to the national standard regulations of the corresponding type of masonry wall. In this embodiment, the number of the cross-shaped formwork tie frames 2 is equal to the number of the tie bars 6 required for constructing the single-sided secondary structure masonry wall, and the height positions of the groups of cross-shaped formwork tie frames 2 are set in one-to-one correspondence with the installation positions of the tie bars 6.

[0047] Of course, in building construction, it is not necessary to construct the secondary structure masonry wall on each side around the frame column 3. It is only necessary to perform anti-corrosion treatment on the exposed ends of the cross-shaped formwork tie frames 2 on the side where the secondary structure masonry wall does not need to be constructed. 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., which is the same as the prior art and will not be elaborated here.

[0048] By adopting the formwork assembly for pouring the frame column provided in this embodiment, it is conducive to ensuring the construction quality of the frame column 3 itself, reducing dust pollution, and at the same time, it is conducive to improving the construction efficiency and construction quality of the tie bars 6 of the secondary structure masonry wall around the frame column 3. Specifically manifested in:

[0049] In terms of facilitating the guarantee of the construction quality of frame columns: In the structure of this formwork assembly, 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 enhancing 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 molding 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 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.

[0050] In terms of facilitating the improvement of the construction efficiency and quality of the tie bars 6 of the secondary structure masonry wall around the frame column 3: In the structure of this formwork assembly, 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, saving 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 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 bar-free implantation 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 assembly, 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, thus 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 quality of the tie bars 6.

[0051] In terms of reducing environmental pollution: By adopting this formwork assembly, the subsequent construction of the tie bars 6 of the secondary structure masonry wall is a bar-free implantation construction, without the need to drill holes in the frame column 3, reducing dust pollution.

[0052] 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, effectively ensuring the construction efficiency and quality of the subsequent tie bars 6; it has good market promotion and application value.

[0053] In this embodiment, the cross-shaped formwork tie rod 2 includes a first tie rod 201 and a second tie rod 202 which are arranged in a cross shape and are snap-connected to each other. The first tie rod 201 and the second tie rod 202 form a stable spatial structure through the cross arrangement, and the snap connection method is adopted at the cross part to achieve rapid assembly. As a preferred implementation manner, the snap connection structure in this embodiment adopts the following form: slot 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 are directly snap-connected by buckling the two slots. Specifically, the first tie rod 201 and the second tie rod 202 can be made of steel bars or steel pipes, etc. By adopting a rod-shaped structure, the structure is simple, the material consumption is small, and it is beneficial to save the manufacturing cost. By adopting the snap connection method, the installation convenience is good, which is beneficial to improving the formwork closing and installation efficiency of the column formwork sleeve 1.

[0054] Specifically, in this embodiment, the installation process of the on-site installation of the formwork assembly in step S2 specifically includes: first, slide out the formwork installation positioning line on the foundation according to the drawing design. Here, the four formworks 101 of the column formwork sleeve 1 are sequentially denoted as the first formwork, the second formwork, the third formwork, and the fourth formwork; then, a plurality of first tie rods 201 are respectively fixedly connected to the first formwork; then, taking the drawn formwork installation positioning line as a reference, the first formwork is installed first, and then the second formwork adjacent to the first formwork is installed; then, a plurality of second tie rods 202 are respectively fixedly installed at the connection positioning holes of the first formwork and form a cross-shaped formwork tie rod 2 with the corresponding first tie rods 201 at the corresponding positions; finally, the docking installations of the third formwork and the fourth formwork are respectively completed; after the four formworks are all closed, external reinforcement construction is carried out on the completed formwork of the column formwork sleeve 1. For example, column hoops, wooden square back ribs can be used for fixing, etc. The external reinforcement construction of the column formwork sleeve 1 is consistent with the reinforcement method of the existing frame column formwork, which is the prior art and will not be elaborated here. Of course, it can be understood that the frame column 3 needs to be reinforced with steel bars before the on-site installation of the formwork assembly. The steel bar binding installation is basically the same as the existing construction process, but it should be noted that the binding positions of the vertical bars and the horizontal bars need 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.

[0055] In this embodiment, both the first tie rod 201 and the second tie rod 202 are made of solid steel bars. A solid steel bar refers to a steel bar with a solid circular cross-section, which is different from hollow steel pipes or other special-shaped steel materials. During implementation, HRB400 grade or HRB500 grade hot-rolled ribbed steel bars can be used, and the diameter range is preferably 6 - 12 mm. As a preferred implementation method, the first tie rod 201 and the second tie rod 202 can use steel bars with the same diameter to ensure the balanced force of the cross-shaped joint; or use a combination of steel bars with different diameters. For example, the tie rod in the main stress direction uses a larger diameter (such as 10 mm), and the secondary stress direction uses a smaller diameter (such as 8 mm). In addition, the surface of the solid steel bar can be processed with threads to enhance the bond strength with concrete, or maintain a smooth surface for easy on-site welding operations. Thus, the cross-shaped formwork tie frame 2 formed by solid steel bars has the following advantages: First, solid steel bars have higher tensile strength and shear strength, which can effectively withstand the lateral pressure during concrete pouring and prevent formwork deformation; Second, solid steel bars are convenient for welding and fixing, and can form a reliable connection with connection blocks or other components; Third, the thermal expansion coefficient of solid steel bars is similar to that of concrete, which can reduce the influence of temperature stress on the structure. Compared with using hollow steel pipes or non-metallic materials, solid steel bars are more adaptable to complex working conditions in building construction, and have lower material costs and are easier to obtain.

[0056] 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 frame 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 stepped cylindrical sleeve, and the connection block 4 is welded and fixed to the cross-shaped formwork tie frame 2. By setting the connection block 4, it is beneficial to improve the connection stability between the cross-shaped formwork tie frame 2 and the column form sleeve 1, which is beneficial to better disperse the transmission of concrete vibration force, thereby reducing the risk of local deformation at the abutting part between the cross-shaped formwork tie frame 2 and the column form sleeve 1, and further being beneficial to better ensuring the installation position accuracy of the cross-shaped formwork tie frame 2; the setting of the connection block 4 makes the fixation of the tie frame in the formwork more reliable, avoiding the problem of easy displacement of traditional embedded parts. 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 frame 2 after the frame column 3 is poured, which is beneficial to better ensuring the construction quality of the subsequent tie bars 6.

[0057] In this embodiment, the connecting block 4 and the column formwork sleeve 1 are fixed by connecting bolts 5. A threaded connection hole 4a is provided on the connecting block 4, and the connecting bolt 5 is inserted from the outside of the column formwork sleeve 1 and then threadedly connected to the threaded connection hole 4a. It can be understood that the connecting bolt 5 is inserted from the positioning connection hole 1a at the corresponding position. Specifically, the threaded connection hole 4a is a pre-machined internal threaded hole on the connecting block 4, and its aperture matches the external thread size of the connecting bolt. The connecting bolt can be an ordinary hexagonal head bolt or an expansion bolt, and the bolt length needs to ensure that it can penetrate the thickness of the formwork 101 and leave enough thread engagement length. The connecting bolt connection method in this structural design is conducive to ensuring the convenience of subsequent formwork removal construction. At the same time, through the pulling effect of the connecting bolt 5, the connection and fixation between the connecting block 4 and the column formwork sleeve 1 can be effectively ensured. Here, in order to enhance the connection stability of the connecting block 4, a backing plate structure is also provided between the outer side of the column formwork sleeve 1 and the connecting bolt 5. At the same time, here, after the formwork is removed, the threaded connection hole 4a can directly serve as the connection positioning hole for the tie bar 6, eliminating the need for welding and fire construction, which is conducive to further improving the construction efficiency of the subsequent tie bar 6.

[0058] In this embodiment, a leak-proof sealant is applied to the abutting surface of the connecting block 4 and the column formwork sleeve 1. By applying a leak-proof sealant to the abutting surface of the connecting block 4 and the column formwork sleeve 1, the risk of slurry leakage at this connection part can be reduced. Specifically, polyurethane sealant is used here. Polyurethane sealant has good adhesive effects on both metal and wood and has a good leak-proof effect.

[0059] In this embodiment, the connecting block 4 and the cross-shaped formwork tie bar 2 are welded and fixed. The welded connection has good connection strength and high connection reliability. The method of separately manufacturing the connecting block 4 and the cross-shaped formwork tie bar 2 and then welding them together is conducive to reducing the material consumption of the formwork tie bar 2 and saving the manufacturing cost.

[0060] In this embodiment, the tie bars 6 are arranged in groups of two. At the ends on the same side of the two tie bars 6, a connecting plate 7 is fixedly welded. The connecting plate 7 is fixedly connected to the connecting block 4 at the corresponding position through a connecting bolt 5. Specifically, the connecting plate 7 can be made of a steel plate with a thickness of 5-8 mm, and its width matches the spacing between the two tie bars 6. As a preferred implementation manner, the connecting plate and the tie bars are welded and fixed by double-sided full welding. Thus, through the provided connecting plate, a reliable connection between the tie bars and the connecting block is achieved. Compared with the prior art, this solution avoids on-site welding operations, simplifies the construction process through bolt connection, and at the same time, the setting of the connecting plate makes the force on the tie bars more uniform, which is beneficial to ensuring the connection quality between the secondary structural masonry wall and the frame column. During specific implementation, the tie bar assembly with a connecting plate can be prefabricated in the factory first, and only bolt tightening is required on-site to complete the installation, significantly improving the construction efficiency. In this embodiment, the specific construction process of the tie bar 6 is as follows: 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.

[0061] In this embodiment, a waist-shaped hole 7a is provided on the connecting plate 7, and the length of the waist-shaped hole is arranged along the height direction for the connecting bolt 5 to pass through. Specifically, the waist-shaped hole is an oblong through hole, and its length direction is parallel to the height direction of the frame column. The setting of the waist-shaped hole allows the connecting bolt to adjust its position in the height direction, so as to adapt to the position deviation during the installation of the tie bars. As a preferred implementation manner, the length of the waist-shaped hole 7a is 5-10 mm larger than the diameter of the connecting bolt, and the width matches the diameter of the connecting bolt. The connecting plate can be made of a steel plate with a thickness of 6-10 mm, and the waist-shaped hole is formed by stamping or drilling. During installation, the connecting bolt can move up and down along the waist-shaped hole. After the position of the tie bars is adjusted in place, it is fixed by tightening the nut. Thus, by setting the waist-shaped hole, the installation position of the tie bars in the height direction is adjustable, and it can effectively compensate for the dimensional deviation during the construction process. This design solves the problem of difficult installation caused by the fixed position of traditional embedded iron parts, and avoids rework caused by the deviation of the embedded position. At the same time, the waist-shaped hole structure is simple and reliable, does not increase the additional manufacturing cost, and is convenient for on-site installation operation. Compared with the connection method with fixed hole positions in the prior art, this solution significantly improves the error tolerance rate and construction efficiency of the tie bar installation.

[0062] In this embodiment, the four templates described in step S1 are all wooden templates. A wooden template refers to a template made of wood materials, usually processed from plywood or solid wood boards. As a preferred implementation, the thickness of the wooden template can be plywood with a thickness of 15-18 mm, and its surface can be treated with waterproofing to increase the number of reuse times. For example, phenolic resin film covering treatment or special mold release agent for templates can be used. The connection positioning holes of the wooden template can be processed by mechanical drilling, the hole diameter is 2-3 mm larger than the diameter of the connection bolt, and the hole position deviation is controlled within the range of ±1 mm. Further, the edges and corners of the wooden template can be treated with aluminum alloy edge wrapping to enhance the wear resistance and overall stiffness of the template edge. Thus, using wooden templates has the following advantages: wooden templates are lighter in weight, facilitating on-site handling and installation; the wood texture is softer, being easy to process and drill holes, and can ensure the processing accuracy of connection positioning holes; the adhesion between the wooden template and concrete is moderate, and the concrete surface is not easily damaged during demolding; the cost of wooden templates is relatively low, being suitable for large-scale construction applications. Compared with steel templates, wooden templates are easier to cut and adjust according to the on-site dimensions to meet the construction requirements of frame columns with different cross-sectional sizes. At the same time, the wooden template has good heat insulation performance, which can reduce the temperature stress during concrete pouring and is beneficial to ensuring the forming quality of the frame column.

[0063] Of course, it can be understood that before installing the template components on site, there are also some construction preparation works and steps for steel bar binding and installation; the construction preparations include:

[0064] Technical preparations: being familiar with the drawings, construction plans, technical disclosures, etc.;

[0065] Material preparations: concrete, steel bars, prefabricated template components, curing materials, etc.;

[0066] Tool preparations: vibrating rods, shovels, lighting equipment (for night construction), etc.;

[0067] Personnel preparations: the operating workers are trained in place and the division of labor is clear;

[0068] On-site preparations: cleaning the inside of the template thoroughly, wetting the template sufficiently, cleaning the surface of the steel bars, erecting a reliable operating platform or scaffolding, etc.

[0069] These are basically the same as the construction preparations for existing frame columns and will not be elaborated here.

[0070] 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 spirit 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 construction method for the secondary structural masonry wall on the side of a frame column without post-inserted bars, characterized in that, It includes the following construction steps: S1: Prefabricate the formwork components of the frame columns. Among them, the formwork components include multiple groups of cross-shaped formwork tie rods and four formworks used to enclose and form the column formwork sleeve. Multiple connection positioning holes corresponding to the layout positions of the tie bars of the secondary structural masonry walls are preset on each formwork respectively; S2: Install the formwork components on site: Fix and install each cross-shaped formwork tie rod in the column formwork sleeve respectively according to the positions of the connection positioning holes on the formwork; S3: Pour the concrete of the frame columns; S4: Remove the formwork; S5: Use each cross-shaped formwork tie rod to directly complete the construction of the tie bars without drilling and implanting in the exposed ends of the cast frame column main body; S6: Complete the construction of the secondary structural masonry walls.

2. The construction method for the non-embedded reinforcement of the secondary structural masonry wall on the side of the frame column according to claim 1, characterized in that: The cross-shaped formwork tie rod includes a first tie rod and a second tie rod which are arranged in a cross and are clamped with each other.

3. The construction method without post-inserted bars for the secondary structural masonry wall on the side of the frame column according to claim 2, characterized in that: Both the first tie rod and the second tie rod are made of solid steel bars.

4. The construction method for the secondary structural masonry wall on the side of the frame column without planting bars according to claim 1, characterized in that: 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.

5. The construction method for the secondary structural masonry wall on the side of the frame column without implanting steel bars according to claim 4, characterized in that: 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 with the threaded connection holes.

6. The construction method for the secondary structural masonry wall on the side of the frame column without implanting steel bars according to claim 4, characterized in that: Leak-proof sealant is smeared on the abutting surfaces of the connection blocks and the column formwork sleeve.

7. The construction method for the secondary structural masonry wall on the side of the frame column without planting bars according to claim 4, characterized in that: The connection blocks and the cross-shaped formwork tie rod are fixedly connected by welding.

8. The construction method without post-inserted bars for the secondary structural masonry wall on the side of the frame column according to claim 5, characterized in that: The tie bars are arranged in groups of two. Connection plates are welded and fixed to the ends on the same side of the two tie bars. The connection plates are fixedly connected to the corresponding connection blocks through connection bolts.

9. The construction method for the secondary structural masonry wall on the side of the frame column without post-inserted bars according to claim 8, characterized in that: Waist-shaped holes for the connection bolts to pass through are provided on the connection plates and are arranged along the height direction.

10. The construction method for the secondary structural masonry wall on the side of the frame column without post-inserted bars according to claim 1, characterized in that: The four formworks described in step S1 are all wooden formworks.

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