A construction method combining outer climbing formwork and inner supporting formwork with steel and aluminum formwork for core tube

Abstract

The invention provides a construction method for a core tube using a combination of an outer climbing formwork and an inner supporting formwork of steel and aluminum formworks, and relates to the technical field of super-high-rise core tube construction, comprising the steps of installing an outer climbing steel formwork on the outer side of an outer wall of a super-high-rise core tube structure; installing an aluminum formwork on the inner side of the outer wall, the inner wall and the horizontal structure; splicing the steel formwork with the aluminum formwork, and casting after fixing; after the casting of the upper concrete is completed and the demolding conditions are met, removing the aluminum formwork and withdrawing the steel formwork at the same time; the outer climbing steel formwork climbs, and after the steel bars are tied on the working layer, the steel formwork is closed and the aluminum formwork is installed; splicing the steel formwork with the aluminum formwork, and casting after fixing, and the like steps. By adopting a system combining inner and outer steel and aluminum formworks, it is ensured that the vertical and horizontal structures of the core tube can be constructed simultaneously, thereby solving the problems existing in the construction of the core tube mentioned above and effectively improving the construction quality of the core tube.

Description

Technical Field

[0001] The invention relates to the technical field of super-high-rise core tube construction, and in particular to a construction method combining an outer climbing formwork and an inner supporting formwork with a steel-aluminum formwork for a core tube. Background Art

[0002] In the current construction industry, with the acceleration of urbanization and the increasing shortage of land resources, the construction of super high-rise towers has gradually become an important part of the city skyline. These towers are not only of astonishing height, but also of complex structure, which puts extremely high demands on construction technology. In the core tube construction of super high-rise towers, the method of constructing the vertical structure before the horizontal structure, especially the use of top formwork technology to construct the core tube wall first, has become a mainstream practice.

[0003] The top form technology has unique advantages, such as climbing is not dependent on the concrete strength of the working layer, which significantly improves the construction progress of the core tube wall. However, this construction method is not perfect, and it has exposed a series of shortcomings in practical application.

[0004] First, the delayed construction of horizontal structures is a major defect of the existing technology. Since the vertical structure is constructed first, the construction of horizontal structures (such as floor slabs, beams, etc.) is often postponed to a later stage. This delayed construction not only affects the coordination of the overall construction progress, but also may lead to unreasonable structural stress state, increasing construction risks.

[0005] Secondly, the increased pressure on safety protection is also an issue that cannot be ignored by existing technologies. When the vertical structure is constructed first, the working surface is often in a high-altitude cantilevered state, and the difficulty and complexity of safety protection measures are significantly increased. Construction workers need to face higher safety risks, which also brings greater challenges to on-site safety management.

[0006] In addition, the chaotic construction of the working layer is also a significant disadvantage of the existing technology. Due to the asynchronous construction sequence of the vertical structure and the horizontal structure, the working layer often has multiple types of work cross-operation and chaotic material stacking. This not only affects the cleanliness and work efficiency of the construction site, but may also cause safety accidents and quality problems.

[0007] These shortcomings are mainly due to the unreasonable arrangement of the construction sequence of vertical and horizontal structures in the existing construction technology. Although the vertical structure construction can speed up the construction progress of the core tube wall, it ignores the importance and coordination of horizontal structure construction. At the same time, the existing technology is also insufficient in safety protection measures for high-altitude operations and the organization and management of working layer construction.

[0008] Therefore, in view of these shortcomings of the prior art, the purpose of the present invention is to provide a more reasonable, efficient and safe method for constructing a core tube of a super-high-rise tower, so as to overcome the shortcomings of the prior art, improve construction efficiency and quality, reduce construction risks and costs, and at the same time improve the quality and efficiency of core tube construction. Summary of the invention

[0009] An embodiment of the present invention provides a construction method for a core tube combining an outer climbing formwork and an inner supporting formwork with a steel-aluminum formwork. By adopting a system combining inner and outer steel-aluminum formworks, it ensures that the vertical and horizontal structures of the core tube can be constructed simultaneously, thereby solving the problems existing in the above-mentioned core tube construction.

[0010] In view of the above problems, the technical solution proposed by the present invention is:

[0011] A construction method for combining an outer climbing formwork and an inner supporting formwork with a steel-aluminum formwork for a core tube comprises the following steps:

[0012] Install external climbing steel formwork on the outer side of the outer wall of the super high-rise core tube structure;

[0013] Install aluminum formwork on the inside of exterior walls, interior walls and horizontal structures;

[0014] The steel formwork and the aluminum formwork are spliced ​​together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips, and then poured after being fixed;

[0015] After the upper concrete pouring is completed and the demoulding conditions are met, the aluminum formwork is removed and the steel formwork is withdrawn;

[0016] The external climbing steel formwork is raised, and after the steel bars are tied on the working layer, the steel formwork is closed and the aluminum formwork is installed;

[0017] The steel formwork and the aluminum formwork are spliced ​​together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips, and then poured after being fixed;

[0018] Repeat the above steps until the construction is completed.

[0019] In order to better implement the technical solution of the present invention, the following technical measures are also adopted.

[0020] Furthermore, the installation of the steel formwork and the aluminum formwork includes the following steps:

[0021] Confirm the number and size of the intersections between the steel formwork and the aluminum formwork according to the construction drawings;

[0022] Make corresponding external corner strips according to the number and size of the intersections of the external corners;

[0023] During the splicing process of the steel formwork and the aluminum formwork, the external corner strips are installed at the intersection of the external corners;

[0024] Lock the locks on the back ribs of steel and aluminum formworks;

[0025] Adjust the gap between the external angle strip and the lock to ensure close contact between the back rib, lock, external angle strip, steel formwork and aluminum formwork.

[0026] Furthermore, the external angle strip comprises a triangular tube, the inclined side wall of the triangular tube has a long hole, a tensioning structure is provided inside the triangular tube to interfere with the lock through the long hole, and a mounting groove is provided on the side edge of the outer surface of the triangular tube close to the right-angle side wall, and a seal is detachably installed inside the triangular tube.

[0027] Furthermore, the sealing member includes a rubber strip to which the insertion rod is fixed.

[0028] Furthermore, the installation of the steel formwork and the aluminum formwork also includes the following steps:

[0029] Apply release agent to the rubber strip of the seal;

[0030] Insert the seal into the interior of the mounting groove;

[0031] Insert the external angle strip into the intersection of the external angle of the steel formwork and the aluminum formwork;

[0032] The rubber strip is clamped during the assembly of steel formwork and aluminum formwork.

[0033] Furthermore, the tensioning structure includes a pushing slider and a tensioning strip abutting against it, wherein the back of the tensioning strip abuts against the right-angle side wall of the triangular tube, the front of the tensioning strip abuts against the back of the pushing slider, and the front of the pushing slider is arranged inside the long hole.

[0034] Furthermore, the push slider includes a push block arranged inside the long hole, and a circle of flange is provided outwardly at the edge of one side of the back side of the push block to limit the position of the push block and prevent it from falling out of the long hole. There are several arc-shaped protrusions arranged at equal intervals on the back side of the push block.

[0035] Furthermore, the tensioning strip includes a bar, wherein the shape of the back of the bar is consistent with the shape of the right-angle side wall of the triangular tube, a column is provided at the top of the bar, and a plurality of arc-shaped grooves matching the shape of the arc-shaped protrusions are provided on the front of the bar, and a raised structure is formed at the edge of the arc-shaped groove close to one side of the column.

[0036] Furthermore, the front side of the tensioning strip can slide on the back side of the pushing slider. During the assembly process of the steel formwork and the aluminum formwork, the arc groove and the arc protrusion are in a coaxial state. During the process of adjusting the gap between the external angle strip and the lock, the arc groove and the arc protrusion are in an eccentric state. At this time, the protruding structure runs away from the column.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows: by adopting external climbing steel formwork on the outer side of the outer wall of the super-high-rise core tube structure, and adopting aluminum formwork on the inner side of the outer wall, the inner wall and the horizontal structure, by adopting this system combining internal and external steel and aluminum formworks, it is ensured that the vertical and horizontal structures of the core tube can be constructed simultaneously, which solves the problems of delayed construction of the horizontal structure, high pressure on safety protection, and chaotic construction on the working layer in the current core tube construction.

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a flow chart of the construction method of combining the outer climbing formwork and the inner supporting formwork of the steel and aluminum formwork for the core tube disclosed in an embodiment of the present invention;

[0040] Figure 2 It is a schematic diagram of the existing template positive angle connection structure;

[0041] Figure 3 A schematic diagram of the template external corner connection structure disclosed in an embodiment of the present invention;

[0042] Figure 4 A schematic diagram of the structure of a positive angle strip disclosed in an embodiment of the present invention;

[0043] Figure 5 for Figure 4 A magnified schematic diagram of the local structure;

[0044] Figure 6 for Figure 4 A schematic diagram of the structure of the middle push slider;

[0045] Figure 7 for Figure 4 Schematic diagram of the structure of the middle tension strip;

[0046] Figure 8 It is a schematic diagram of different states of the push slider and the tensioning strip disclosed in the embodiment of the present invention;

[0047] Fig. 9 A schematic diagram of an installation position structure of a positive angle strip and a template disclosed in an embodiment of the present invention (the push block does not extend out of the long hole);

[0048] Fig.10 This is a schematic diagram of another installation position structure of the external angle strip and the template disclosed in an embodiment of the present invention (the push block extends out from the long hole and conflicts with the lock).

[0049] : 1. template; 2. back rib; 3. lock; 4. external angle strip; 41. triangular tube; 41a. long hole; 41b. right-angle side wall; 41c. inclined side wall; 41d. mounting groove; 42. tensioning structure; 421. push slider; 421a. push block; 421b. flange; 421c. arc-shaped protrusion; 422. tensioning strip; 422a. column; 422b. bar; 422c. arc-shaped groove; 422d. raised structure; 43. sealing member; 431. plug rod; 432. rubber strip. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0051] The shortcomings of the current super high-rise tower core tube construction process, in which the vertical structure is constructed before the horizontal structure, can be summarized as follows:

[0052] (1) Delayed construction of horizontal structures.

[0053] (2) The pressure of safety protection increases.

[0054] (3) The construction on the working layer is rather chaotic.

[0055] The reason for this problem is that the segmented construction process causes the construction sequence of the vertical structure and the horizontal structure to be out of sync, which leads to the above-mentioned problems.

[0056] In order to solve the above problems, according to the current core tube construction of super high-rise towers, the present invention proposes a construction method combining an external climbing formwork and an internal supporting formwork with a steel-aluminum formwork for the core tube. During the core tube construction of the super high-rise tower, the vertical structure and the horizontal structure can be constructed simultaneously.

[0057] in,

[0058] The external climbing steel formwork adopts the climbing formwork system in the existing technology, and the core tube formwork of the super high-rise office building adopts an external climbing and internal supporting steel-aluminum composite formwork system (a composite formwork system of steel formwork + aluminum formwork). The climbing formwork has two layers of structure hanging vertically downward and two layers of structure extending upward. The climbing formwork itself has a total of six layers, two layers of upper steel bar binding, one layer of concrete pouring, one layer of climbing frame lifting operation, and two layers of concrete defect repair.

[0059] The integrated electric climbing formwork system includes the formwork system, the load-bearing system, the climbing system, the formwork opening and closing traction system and the intelligent control system. The formwork system includes the formwork and the scaffolding (upper platform). The load-bearing system includes the working platform composed of the wall-mounted support, the support frame and the horizontal truss. The climbing system includes the wall-mounted support, the guide rail and the power equipment. The formwork opening and closing traction system includes the slide rail, the pulley, the up and down fine-tuning device and the traction power equipment. The intelligent control system includes the gravity sensor, the synchronous controller and the remote control safety device.

[0060] The aluminum formwork adopts the aluminum alloy formwork support technology in the existing technology. The aluminum formwork referred to in the present invention refers to aluminum alloy formwork. The horizontal structure (beams, slabs, stairs, etc.) in the core tube of the tower adopts aluminum formwork, which mainly includes wall, beam and stair formwork support.

[0061] like Figure 1 As shown, the present invention proposes a construction method for combining an outer climbing formwork and an inner supporting formwork with a steel-aluminum formwork for a core tube, comprising the following steps:

[0062] S1, install external climbing steel formwork on the outer side of the outer wall of the super high-rise core tube structure;

[0063] S2, install aluminum formwork on the inner side of the exterior wall, interior wall and horizontal structure;

[0064] S3, splicing the steel formwork and the aluminum formwork together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips, and then poured after being fixed;

[0065] S4, after the upper concrete pouring is completed and the demoulding conditions are met, the aluminum formwork is removed and the steel formwork is demoulded;

[0066] S5, the external climbing steel formwork is raised, after the steel bars are tied on the working layer, the steel formwork is closed and the aluminum formwork is installed;

[0067] S6, splicing the steel formwork and the aluminum formwork together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips, and then poured after being fixed;

[0068] S7, repeat the above steps until the construction is completed.

[0069] In the above step S3, in the prior art, the steel formwork and the aluminum formwork are spliced ​​together by using angle aluminum or C grooves for connection, such as Figure 2 As shown, the specific process of connection is: using the openings on the steel formwork and the aluminum formwork and the openings on the angle aluminum or C-slot, use bolts to connect.

[0070] Due to the inconsistent sizes of the steel formwork and the aluminum formwork, hole position deviation will occur during the installation process, making installation difficult. At the same time, the joints at the intersection of the steel formwork and the aluminum formwork's external corners are difficult to keep completely sealed, and slight leakage is prone to occur after pouring concrete, resulting in poor quality of the external corner forming after pouring.

[0071] In this regard, the present invention has made improvements in the step of assembling the steel formwork and the aluminum formwork, and the installation of the steel formwork and the aluminum formwork also includes the following steps:

[0072] Confirm the number and size of the intersections between the steel formwork and the aluminum formwork according to the construction drawings;

[0073] According to the number and size of the intersections of the external corners, corresponding external corner strips 4 are made;

[0074] During the splicing process of the steel formwork and the aluminum formwork, the external angle strip 4 is installed at the intersection of the external angles, such as Figure 3 As shown;

[0075] Lock the lock 3 on the steel formwork and the aluminum formwork back rib 2, such as Figure 3 As shown;

[0076] Adjust the gap between the external angle strip 4 and the lock 3 to ensure close contact between the back rib 2, the lock 3, the external angle strip 4, the steel formwork and the aluminum formwork.

[0077] like Figure 3 As shown, the external angle strip 4 is used to replace the existing angle aluminum or C groove to connect the steel formwork and the aluminum formwork at the external angle, which has the following advantages:

[0078] 1. When assembling the steel formwork and the aluminum formwork, the seal 43 of the external angle strip 4 can seal the joint at the intersection of the steel formwork and the external angle of the aluminum formwork to avoid leakage during the pouring of concrete and maintain the forming quality of the external angle after the pouring is completed.

[0079] 2. There is no need to use bolts to connect the external angle strip 4 and the template 1 (steel template, aluminum template). Not only is the disassembly and assembly speed fast, but it is also suitable for the connection between templates 1 (steel template, aluminum template) of different sizes, has a wide range of adaptability, and is easy to use.

[0080] like Figure 4 As shown, the male angle strip 4 includes a triangular tube 41, the inclined side wall 41c of the triangular tube 41 has a long hole 41a, a tensioning structure 42 is provided inside the triangular tube 41 to abut against the lock 3 through the long hole 41a, and an installation groove 41d is provided on the side edge of the outer surface of the triangular tube 41 close to the right-angle side wall 41b, and a seal 43 is detachably installed inside the triangular tube 41.

[0081] The sealing member 43 includes a plug rod 431 and a rubber strip 432 fixed thereto. Figure 5As shown, the installation process of steel formwork and aluminum formwork includes the following steps:

[0082] Apply a release agent on the rubber strip 432 of the sealing member 43;

[0083] Insert the seal 43 into the interior of the mounting groove 41d;

[0084] Insert the external angle strip 4 into the intersection of the external angle of the steel formwork and the aluminum formwork;

[0085] During the assembly of the steel formwork and the aluminum formwork, the rubber strip 432 is clamped. Fig. 9 shown.

[0086] The cross-sectional shape of the triangular tube 41 is a right triangle. Figures 9 and 10 As shown, the right-angle side wall 41b of the triangular tube 41 is two mutually perpendicular side walls where the right-angle side of the triangular tube 41 is located, and the inclined side wall 41c is the side wall where the inclined side of the triangular tube 41 is located.

[0087] like Figures 9 and 10 As shown, the process of installing the external corner strip 4 (the external corner strip 4 is connected to the aluminum formwork and the steel formwork respectively) includes the following steps:

[0088] Insert the external corner strip 4 into the external corner assembly of the steel formwork and the aluminum formwork;

[0089] Steel formwork and aluminum formwork clamp the rubber strip 432;

[0090] Locking the lock 3 on the back rib 2 (composed of a locking mechanism and a connecting rod, the two locking mechanisms are respectively installed on the back rib 2 of the steel formwork and the aluminum formwork);

[0091] By striking the upright post 422a on the tensioning strip 422, the tensioning strip 422 moves in the striking direction. Figure 8 As shown, the pushing slider 421 is gradually pushed out from the long hole 41a and abuts against the lock 3 (at this time, the right-angle surface of the external angle strip 4 is in tight contact with the steel formwork and the aluminum formwork. At the same time, as the lock 3 is tightened, the steel formwork and the aluminum formwork extrude the rubber strip 432 to form a complete sealing structure, achieving the effect of not needing to use bolts to connect the external angle strip 4 and the formwork 1, and the effect of sealing the joint seam between the steel formwork and the aluminum formwork).

[0092] like Figure 6-7 As shown, the tensioning structure 42 includes a pushing slider 421 and a tensioning strip 422 that abuts against it, wherein the back of the tensioning strip 422 abuts against the right-angle side wall 41b of the triangular tube 41, and the front of the tensioning strip 422 abuts against the back of the pushing slider 421, and the front of the pushing slider 421 is arranged inside the long hole 41a.

[0093] like Figure 6As shown, the push slider 421 includes a push block 421a arranged inside the long hole 41a, and a circle of flange 421b is provided outwardly at the edge of one side of the back side of the push block 421a to limit the position of the push block 421a to prevent it from slipping out of the long hole 41a, and a plurality of arc-shaped protrusions 421c are arranged at equal intervals on the back side of the push block 421a.

[0094] The size of the flange 421b is larger than that of the long hole 41a, that is, the push block 421a can pass through the long hole 41a, but the flange 421b cannot pass through the long hole 41a, thereby limiting the movement position of the push block 421a.

[0095] like Figure 7 As shown, the tensioning strip 422 includes a bar 422b, wherein the back shape of the bar 422b is consistent with the shape of the right-angle side wall 41b of the triangular tube 41, a column 422a is provided on the top of the bar 422b, and a plurality of arc-shaped grooves 422c that are adapted to the shape of the arc-shaped protrusion 421c are provided on the front of the bar 422b, and a protruding structure 422d is formed at the edge of the arc-shaped groove 422c close to the side of the column 422a.

[0096] like Figure 8 As shown, the front side of the tensioning strip 422 can slide on the back side of the pushing slider 421. During the assembly process of the steel formwork and the aluminum formwork, the arc groove 422c and the arc protrusion 421c are in a coaxial state. During the process of adjusting the gap between the external angle strip 4 and the lock 3, the arc groove 422c and the arc protrusion 421c are in an eccentric state. At this time, the protruding structure 422d runs in the direction away from the column 422a.

[0097] As the column 422a is subjected to impact force, the arc-shaped groove 422c on the tensioning strip 422 and the arc-shaped protrusion 421c on the pushing slider 421 gradually change from a coaxial state to an eccentric state (the protruding structure 422d slides along the surface of the arc-shaped protrusion 421c). During this process, in the coaxial state, the distance h1 between the tensioning strip 422 and the pushing slider 421 gradually increases to h2. At this time, the pushing block 421a of the pushing slider 421 is pushed out of the long hole 41a and conflicts with the lock 3.

[0098] During the dismantling process, the fixing state between the external corner strip 4 and the lock 3 can be loosened by knocking the bar 422b in the opposite direction or using the column 422a to pull out the tensioning strip 422, and the template 1 can be removed to take out the external corner strip 4 according to the normal construction sequence.

[0099] The present invention adopts an external climbing steel formwork on the outer side of the outer wall of the super-high-rise core tube structure, and an aluminum formwork on the inner side of the outer wall, the inner wall and the horizontal structure. By adopting this system of combining internal and external steel-aluminum formworks, it is ensured that the vertical and horizontal structures of the core tube can be constructed simultaneously, and the problems of delayed construction of the horizontal structure, high safety protection pressure, and chaotic construction of the working layer in the current core tube construction are solved. At the same time, in the process of splicing the aluminum formwork and the steel formwork, the existing splicing method is improved, which can increase the speed of template disassembly and assembly during the construction of the super-high-rise core tube, and can also effectively improve the forming quality of the splicing of the positive corners of the aluminum formwork and the steel formwork. The improvement of the above-mentioned splicing method effectively improves the construction quality of the combined construction method of external climbing formwork and internal supporting formwork steel-aluminum formwork for the core tube proposed by the present invention.

[0100] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A construction method for combining outer climbing formwork and inner supporting formwork with steel and aluminum formwork for a core tube, characterized in that: The following steps are involved: S1, install external climbing steel formwork on the outer side of the outer wall of the super high-rise core tube structure; S2, install aluminum formwork on the inner side of the exterior wall, interior wall and horizontal structure; S3, splicing the steel formwork and the aluminum formwork together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips (4), and then poured after being fixed; Among them, the installation of steel formwork and aluminum formwork includes the following steps: S31, confirm the number and size of the intersections between the steel formwork and the aluminum formwork according to the construction drawings; S32, manufacturing corresponding external corner strips (4) according to the number and size of the external corner intersections; S33, during the splicing process of the steel formwork and the aluminum formwork, a positive corner strip (4) is installed at the intersection of the positive corners; S34, a lock (3) for locking the steel formwork and the aluminum formwork back rib (2); S35, adjusting the gap between the external angle strip (4) and the lock (3) so that the back rib (2), the lock (3), the external angle strip (4), the steel formwork, and the aluminum formwork are in close contact; The external angle strip (4) comprises a triangular tube (41), the inclined side wall (41c) of the triangular tube (41) having a long hole (41a), a tensioning structure (42) being arranged inside the triangular tube (41) and contacting the lock (3) through the long hole (41a), a side edge of the outer surface of the triangular tube (41) close to the right-angle side wall (41b) having a mounting groove (41d), a sealing member (43) being detachably mounted inside the sealing member (43), the sealing member (43) comprising an insert rod (431) and a rubber strip (432) fixed thereto; The tensioning structure (42) comprises a pushing slider (421) and a tensioning strip (422) abutting against the pushing slider, wherein the back side of the tensioning strip (422) abuts against the right-angle side wall (41b) of the triangular tube (41), the front side of the tensioning strip (422) abuts against the back side of the pushing slider (421), and the front side of the pushing slider (421) is arranged inside the long hole (41a); Adjusting the gap between the external angle strip (4) and the lock (3) comprises: striking the upright post (422a) on the tension strip (422), driving the tension strip (422) to move along the striking direction, and gradually pushing the push slider (421) out of the long hole (41a) to contact the lock (3); S4, after the upper concrete pouring is completed and the demoulding conditions are met, the aluminum formwork is removed and the steel formwork is demoulded; S5, the external climbing steel formwork is raised, after the steel bars are tied on the working layer, the steel formwork is closed and the aluminum formwork is installed; S6, splicing the steel formwork and the aluminum formwork together, wherein the outer corners of the steel formwork and the aluminum formwork are connected by outer corner strips (4), and then poured after being fixed; S7, repeat the above steps until the construction is completed.

2. The method according to claim 1, characterized in that: The installation of steel formwork and aluminum formwork also includes the following steps: Apply a release agent to the rubber strip (432) of the sealing member (43); Insert the sealing member (43) into the interior of the mounting groove (41d); Insert the external corner strip (4) into the intersection of the external corners of the steel formwork and the aluminum formwork; The rubber strip (432) is clamped during the assembly of the steel formwork and the aluminum formwork.

3. The method according to claim 1, characterized in that: The push slider (421) comprises a push block (421a) arranged inside the long hole (41a), a flange (421b) is provided outwardly at the edge of one side of the back side of the push block (421a) to limit the position of the push block (421a) to prevent it from slipping out of the long hole (41a), and a plurality of arc-shaped protrusions (421c) are arranged at equal intervals on the back side of the push block (421a).

4. The method according to claim 3, characterized in that: The tensioning strip (422) comprises a bar (422b), wherein the shape of the back side of the bar (422b) is consistent with the shape of the right-angle side wall (41b) of the triangular tube (41), a column (422a) is provided on the top of the bar (422b), and a plurality of arc-shaped grooves (422c) matching the shape of the arc-shaped protrusion (421c) are provided on the front side of the bar (422b), and a protruding structure (422d) is formed at the edge of the arc-shaped groove (422c) on one side close to the column (422a).

5. The method according to claim 4, characterized in that: The front side of the tensioning strip (422) can slide on the back side of the push slider (421); during the assembly process of the steel template and the aluminum template, the arc-shaped groove (422c) and the arc-shaped protrusion (421c) are in a coaxial state; during the adjustment of the gap between the external angle strip (4) and the lock (3), the arc-shaped groove (422c) and the arc-shaped protrusion (421c) are in an off-axis state, and at this time, the protruding structure (422d) moves in a direction away from the column (422a).

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