Construction method of double-layered hoop concrete formwork support system

Abstract

The application discloses a construction method of a double-layered hoop concrete formwork support system, which comprises the following steps: setting a lower support hoop device on the outer wall of a prestressed concrete pipe pile, installing an inner platform and an outer platform, and establishing a lower-layered hoop concrete formwork support system; setting an upper support hoop device on the outer wall of the prestressed concrete pipe pile above the inner platform, installing a concrete support formwork, and establishing an upper-layered hoop concrete formwork support system; and setting a support connecting rod between the concrete support formwork and the inner platform or the outer platform. The construction method of the double-layered hoop concrete formwork support system is simple in procedure, convenient and fast in operation, and high in efficiency, can provide a stable support device for the reinforced concrete required by the splicing of the prestressed concrete pipe pile, and can provide a stable operation platform for the splicing operation, thereby improving the stability of the splicing operation, being high in stability and firmness, high in support strength, and greatly improving the operation efficiency and convenience of the post-stage splicing.

Description

Technical Field

[0001] This invention relates to the field of construction equipment technology, specifically to a construction method for a double-layer clamp concrete formwork support system. Background Technology

[0002] Prestressed concrete pipe piles are hollow cylindrical precast concrete components manufactured using a pre-tensioned prestressed centrifugal molding process and cured under high pressure and high temperature steam. The standard section length is 10m. Due to their advantages of high single-pile bearing capacity, good bending and tensile strength, and low cost, prestressed concrete pipe piles are widely used in industrial and civil high-rise buildings, railways, highways, bridges, ports, docks, water conservancy, municipal engineering, and other construction technologies.

[0003] Currently, splicing prestressed concrete pipe piles typically involves using a separate pipe pile splicer and bolts. While this method is fast, the splicer and bolts corrode and rust during long-term immersion in moist sludge, affecting the stability of the upper prestressed concrete pipe piles and posing significant safety hazards to the structures built upon them. Reinforcing the joint of two prestressed concrete pipe piles with reinforced concrete, although slower, effectively prevents corrosion and rust, improving structural stability. However, the construction method for a double-layered clamp concrete formwork support system required for reinforced concrete splicing of prestressed concrete pipe piles is currently uncommon. Therefore, developing a construction method for a double-layered clamp concrete formwork support system for reinforced concrete splicing of prestressed concrete pipe piles is essential. Summary of the Invention

[0004] The purpose of this invention is to provide a construction method for a double-layer clamp concrete formwork support system to solve the above-mentioned defects.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A construction method for a double-layer clamp-on concrete formwork support system includes the following steps:

[0007] S1. Establish a lower-level clamp support system:

[0008] S11. As needed, at a certain height on the upper end of the prestressed concrete pipe pile, place the two arc-shaped stirrups in the lower support clamping device horizontally opposite each other and clamp them on the outer wall of the prestressed concrete pipe pile, and tighten and fix the two arc-shaped stirrups with fastening bolts.

[0009] S12. Insert the front ends of several cantilever support steel bars into several embedded nuts on the outer end face of the arc-shaped stirrup in the lower support clamp device. The external thread on the front end of the cantilever support steel bar matches the internal thread of the embedded nut of the clamp to fix the cantilever support steel bar to the embedded nut of the clamp, thereby realizing the establishment of the lower clamp support system on the prestressed concrete pipe pile.

[0010] S2. Construct the lower-level frictional internal and external platform:

[0011] S21. Fit the prefabricated plate-shaped inner platform with a pile hole in the center onto the prestressed concrete pipe pile, and make the inner platform tightly attached to several cantilevered support steel bars installed on the lower support clamp device.

[0012] S22. Fit the prefabricated plate-shaped outer platform with a central hole in the outer platform onto the outside of the inner platform, and make the wall of the central hole of the outer platform fit against the outer peripheral wall of the inner platform.

[0013] S23. Screw several clamping screws one by one into several clamping nut holes pre-set on the end faces of the outer platform and the inner platform by means of thread engagement;

[0014] S24. When the front end of the tightening screw is exposed into the pile hole, install the prefabricated tightening end one by one on the front end of the tightening screw, and then continue to screw in the tightening screw so that the tightening end of the tightening screw is pressed against the outer wall of the prestressed concrete pipe pile, thereby realizing the construction of the friction-type inner and outer platforms.

[0015] S3. Construct the upper-level clamp support system:

[0016] S31. As needed, on the outer wall of the prestressed concrete pipe pile at a certain height above the inner platform, place two arc-shaped stirrups in the upper support clamping device horizontally opposite each other and clamp them on the outer wall of the prestressed concrete pipe pile, and tighten and fix the two arc-shaped stirrups with fastening bolts.

[0017] S32. Insert the front ends of several cantilever support steel bars into several embedded nuts on the outer end faces of the two arc-shaped stirrups fixed in the upper support clamp device. The cantilever support steel bars are fixed to the clamp nuts by matching the external threads on the front ends of the cantilever support steel bars with the internal threads of the embedded nuts.

[0018] S33. Next, fit the prefabricated plate-shaped concrete support template with a pile hole in the center onto the prestressed concrete pipe pile, and make the concrete support template tightly attached to several cantilever support steel bars installed on the upper support clamp device.

[0019] S34. Several connecting rod holes are pre-set on the concrete support formwork and the inner or outer platform. Finally, the upper and lower ends of several supporting connecting rods are installed in the connecting rod holes of the concrete support formwork and the inner or outer platform, and the two nuts are fixed to the two ends of the supporting connecting rods by thread engagement, thereby realizing the construction of the upper clamp support system on the prestressed concrete pipe pile; the entire construction process of the double-layer clamp concrete formwork support system is thus completed.

[0020] Preferably, both the lower support clamp device and the upper support clamp device are composed of two arc-shaped stirrups, one end of the two arc-shaped stirrups is fixed together by hinge, and the other end is fixed by fastening bolts; or both ends of the two arc-shaped stirrups are fixed by fastening bolts.

[0021] Preferably, the cantilevered support steel bars in the lower support clamp device and the upper support clamp device are arranged radially with the center of the central hole formed by the two arc-shaped stirrups as the center point, and the cantilevered support steel bars and the embedded nuts in the clamps are all arranged in the same horizontal plane.

[0022] Preferably, the lower support clamp device, the upper support clamp device, and the inner platform are all attached to the outer wall of the prestressed concrete pipe pile, and the prestressed concrete pipe pile is located at the center of the pile hole in the center of the inner platform and the center hole formed by the two arc-shaped stirrups of the lower support clamp device and the upper support clamp device.

[0023] Preferably, the inner platform and the outer platform are on the same plane, and the plurality of clamping nut holes and clamping screws are arranged radially with the center of the pile hole of the inner platform as the center point.

[0024] Preferably, in step S2, the clamping end is suspended in the pile hole in the center of the inner platform and fixed to the front end of the clamping screw. The clamping end consists of a steel component at the rear end and a rubber component at the front end, and the rubber component is pressed against the outer wall of the prestressed concrete pipe pile.

[0025] Preferably, in step S2, the inner platform and the outer platform are integrally formed or assembled and fixed from multiple parts, and are plate-type platforms with a circular or square metal or plastic structure; and the wall of the central hole of the outer platform is in contact with the outer peripheral wall of the inner platform.

[0026] Preferably, in step S2, the clamping nut hole is provided with a clamping internal thread, and the clamping screw is provided with a clamping external thread that matches the clamping internal thread. The clamping screw is installed in the clamping nut hole by means of thread engagement.

[0027] Preferably, in step S3, the concrete support formwork is a plate platform of metal or plastic structure that is integrally formed or assembled and fixed from multiple parts, and is circular or square in shape.

[0028] The beneficial effects of this invention are as follows:

[0029] This invention discloses a construction method for a double-layer clamp concrete formwork support system. A lower clamp concrete formwork support system is established by attaching a lower support clamp device to the outer wall of a prestressed concrete pipe pile and installing an inner platform and an outer platform fixed by a clamping device, thus providing a stable operating platform for the splicing of prestressed concrete pipe piles. An upper clamp concrete formwork support system is established by attaching an upper support clamp device to the outer wall of the prestressed concrete pipe pile above the inner platform and installing a concrete support formwork, thus providing a stable support formwork for the reinforced concrete required for splicing prestressed concrete pipe piles. Furthermore, by setting several supporting connecting rods between the concrete support formwork and the inner or outer platform, the connection between the upper concrete support formwork and the lower inner or outer platform is strengthened, improving the support stability of the upper concrete support formwork and the lower inner or outer platform. This invention discloses a construction method for a double-layer clamp concrete formwork support system. The procedure is simple, convenient, quick, and efficient. It provides a stable support device for the reinforced concrete required for splicing prestressed concrete pipe piles and a stable operating platform for splicing operations, thereby improving the stability of the splicing process. The double-layer clamp concrete formwork support system constructed by this invention has a simple and compact structure, high stability, and strong support strength, which can also significantly improve the efficiency and convenience of subsequent pipe pile operations. Attached Figure Description

[0030] Figure 1 : A schematic flowchart of the method of the present invention;

[0031] Figure 2 : A schematic diagram of the structure of the double-layer clamp concrete formwork support system of the present invention;

[0032] Figure 3 : A schematic diagram of the support clamp device of the double-layer clamp concrete formwork support system of the present invention. Detailed Implementation

[0033] Combined with appendix Figure 1-3 The specific embodiments of the present invention are described below:

[0034] like Figure 2-3As shown, a double-layer clamp concrete formwork support system includes a lower support clamp device 1 and an upper support clamp device 5 attached to the outer wall of a prestressed concrete pipe pile 100. An inner platform 2 and a concrete support formwork 6 are respectively fitted onto the lower support clamp device 1 and the upper support clamp device 5. The prestressed concrete pipe pile 100 is set in the pile hole 21 set in the center of the inner platform 2 and the concrete support formwork 6.

[0035] Both the lower support clamp device 1 and the upper support clamp device 5 are composed of two arc-shaped stirrups 11 placed horizontally opposite each other and fixed by fastening bolts 12. One end of each arc-shaped stirrup 11 is hinged together, and the other end is fixed by the fastening bolt 12; or both ends of each arc-shaped stirrup 11 are fixed by fastening bolts 12. The prestressed concrete pipe pile 100 is installed in the pile hole 21 in the center of the inner platform 2 and in the central hole formed by the two arc-shaped stirrups 11 of the lower support clamp device 1 and the upper support clamp device 5. By adjusting the tightness of the fastening bolts 12, the tightness between the lower support clamp device 1, the upper support clamp device 5, and the outer wall of the prestressed concrete pipe pile 100 can be adjusted to facilitate the installation of the lower support clamp device 1 and the upper support clamp device 5.

[0036] In this device, both the lower support clamping device 1 and the upper support clamping device 5 have several clamping nuts 13 embedded in their outer circumferential surfaces on their arc-shaped stirrups 11, and each is fitted with a cantilevered support steel rod 14. The front end of each cantilevered support steel rod 14 has an external thread that mates with the internal thread of the clamping nut 13. Each cantilevered support steel rod 14 corresponds one-to-one with a clamping nut 13, and the front end of each cantilevered support steel rod 14 is inserted and screwed into the clamping nut 13. The cantilevered support steel rods 14 are arranged radially with the center of the central hole formed by the two arc-shaped stirrups 11 as the center point. All clamping nuts 13 and cantilevered support steel rods 14 are located on the same horizontal plane. The inner platform 2 and the concrete support formwork 6 are pressed tightly against the cantilevered support steel rods 14 in the lower support clamping device 1 and the upper support clamping device 5 by their own weight.

[0037] An outer platform 3 is provided on the outer side of the inner platform 2. The inner platform 2 and the outer platform 3 are pressed and fixed to the outer wall of the prestressed concrete pipe pile 100 by a clamping device 4. The inner platform 2 and the outer platform 3 are on the same plane. Several clamping nut holes 22 are provided on the end face of the outer platform 3, which are connected to the end faces of the outer platform 3 and the inner platform 2. The clamping device 4 includes a clamping screw 41 and a clamping end 42. The clamping nut hole 22 is provided with a clamping internal thread. The clamping screw 41 is provided with a clamping external thread that matches the clamping internal thread. The clamping screw 41 is screwed into the clamping nut holes 22 of the outer platform 3 and the inner platform 2 in sequence by thread engagement. Finally, the clamping end 42 is suspended in the pile hole 21 in the center of the inner platform 2 and fixed to the front end of the clamping screw 41. The several clamping screws 41 are arranged radially with the center of the pile hole 21 as the center point. The clamping end 42 consists of a steel component at the rear end and a rubber component at the front end, with the rubber component pressing against the outer wall of the prestressed concrete pipe pile 100. By rotating the clamping screw 41, the rubber component of the clamping end 42 at the front end of the clamping screw 41 can be pressed against the outer wall of the prestressed concrete pipe pile 100. By continuing to screw the clamping screw 41 in, the clamping force between the clamping device 4 and the outer wall of the prestressed concrete pipe pile 100 can be adjusted. The supporting clamping device 1, fixed by the clamping nut 13, and the clamping devices 4 installed on the inner platform 2 and outer platform 3, form a side-pillar clamping force with the prestressed concrete pipe pile 100, using the friction force generated by the clamping force to achieve the stability of the platform auxiliary support.

[0038] The inner platform 2, outer platform 3, and concrete support formwork 6 are all integrally formed or assembled and fixed from multiple parts, forming a circular or square metal or plastic plate platform; the outer platform 3 has a central hole at its center, and the hole wall of the outer platform 3 fits against the outer peripheral wall of the inner platform 2.

[0039] Several supporting connecting rods 7 are provided between the concrete support formwork 6 and the inner platform 2 or outer platform 3. The supporting connecting rods 7 can strengthen the connection between the upper concrete support formwork 6 and the lower inner platform 2 or outer platform 3, thereby improving the support stability of the upper concrete support formwork 6 and the lower inner platform 2 or outer platform 3.

[0040] like Figure 1 , 2 As shown in Figure 3, the construction method of the present invention based on the above-mentioned double-layer clamp concrete formwork support system specifically includes the following steps:

[0041] S1. Establish a lower-level clamp support system:

[0042] S11. As needed, at a certain height on the upper end of the prestressed concrete pipe pile 100, place the two arc-shaped stirrups 11 in the lower support clamping device 1 horizontally and clamp them onto the outer wall of the prestressed concrete pipe pile 100, and tighten and fix the two arc-shaped stirrups 11 with fastening bolts 12.

[0043] S12. Insert the front ends of several cantilever support steel bars 14 into several clamp embedded nuts 13 set on the outer end face of the arc-shaped stirrups 11 in the lower support clamp device 1. The cantilever support steel bars 14 and clamp embedded nuts 13 are fixed by matching the external threads of the front ends of the cantilever support steel bars 14 with the internal threads of the clamp embedded nuts 13, thereby realizing the establishment of the lower clamp support system on the prestressed concrete pipe pile 100.

[0044] S2. Construct the lower-level frictional internal and external platform:

[0045] S21. Fit the prefabricated plate-shaped inner platform 2 with a central pile hole 21 onto the prestressed concrete pipe pile 100, and make the inner platform 2 tightly attached to several cantilever support steel bars 14 installed on the lower support clamp device 1.

[0046] S22. The prefabricated plate-shaped outer platform 3 with a central hole in the outer platform is fitted onto the outside of the inner platform 2, and the hole wall of the outer platform central hole of the outer platform 3 is fitted with the outer peripheral wall of the inner platform 2.

[0047] S23. Screw several clamping screws 41 one by one into several clamping nut holes 22 pre-set on the end faces of the outer platform 3 and the inner platform 2 by means of thread engagement;

[0048] S24. When the front end of the clamping screw 41 is exposed into the pile hole 21, install the prefabricated clamping end 42 one by one on the front end of the clamping screw 41, and then continue to screw the clamping screw 41 in, so that the clamping end 42 at the front end of the clamping screw 41 is pressed against the outer wall of the prestressed concrete pipe pile 100, thereby realizing the construction of the friction-type inner and outer platforms.

[0049] S3. Construct the upper-level clamp support system:

[0050] S31. As needed, on the outer wall of the prestressed concrete pipe pile 100 at a certain height above the inner platform 2, place two arc-shaped stirrups 11 in the upper support clamping device 5 horizontally and clamp them onto the outer wall of the prestressed concrete pipe pile 100, and tighten and fix the two arc-shaped stirrups 11 with fastening bolts 12.

[0051] S32. Insert the front ends of several cantilever support steel bars 14 into several clamping nuts 13 set on the outer end face of two arc-shaped stirrups 11 fixed in the upper support clamping device 5, and use the external thread of the front end of the cantilever support steel bar 14 to match the internal thread of the clamping nut 13 to fix the cantilever support steel bar 14 and the clamping nut 13.

[0052] S33. Then, the prefabricated plate-shaped concrete support template 6 with a central pile hole 21 is fitted onto the prestressed concrete pipe pile 100, and the concrete support template 6 is tightly attached to several cantilever support steel bars 14 installed on the upper support clamp device 5.

[0053] S34, the concrete support formwork 6 and the inner platform 2 or outer platform 3 are pre-set with several connecting rod holes. Finally, the upper and lower ends of several supporting connecting rods 7 are respectively installed in the connecting rod holes of the concrete support formwork 6 and the inner platform 2 or outer platform 3, and the two nuts are fixed to the two ends of the supporting connecting rods 7 by thread engagement, thereby realizing the construction of the upper clamp support system on the prestressed concrete pipe pile 100; thus completing the entire construction process of the double-layer clamp concrete formwork support system.

[0054] This invention discloses a construction method for a double-layer clamp concrete formwork support system. A lower clamp concrete formwork support system is established by attaching a lower support clamp device 1 to the outer wall of a prestressed concrete pipe pile 100 and installing an inner platform 2 and an outer platform 3 fixed by a clamping device 4, thus providing a stable operating platform for the splicing operation at the upper end of the prestressed concrete pipe pile 100. An upper clamp concrete formwork support system is established by attaching an upper support clamp device 5 to the outer wall of the prestressed concrete pipe pile 100 above the inner platform 2 and installing a concrete support formwork 6, thus providing a stable support formwork for the reinforced concrete required for splicing the prestressed concrete pipe pile 100. Furthermore, by setting several support connecting rods 7 between the concrete support formwork 6 and the inner platform 2 or outer platform 3, the connection between the upper concrete support formwork 6 and the lower inner platform 2 or outer platform 3 can be strengthened, improving the support stability of the upper concrete support formwork 6 and the lower inner platform 2 or outer platform 3.

[0055] This invention discloses a construction method for a double-layer clamp concrete formwork support system. The procedure is simple, convenient, quick, and efficient. It provides a stable support device for the reinforced concrete required for splicing prestressed concrete pipe piles and a stable operating platform for splicing operations, thereby improving the stability of the splicing process. The double-layer clamp concrete formwork support system constructed by this invention has a simple and compact structure, high stability, and strong support strength, which can also significantly improve the efficiency and convenience of subsequent pipe pile operations.

[0056] The invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the invention, or the direct application of the inventive concept and technical solution to other situations without modification, is within the protection scope of the invention.

Claims

1. A construction method for a double-layer clamp-on concrete formwork support system, characterized in that, The steps include the following: S1. Establish a lower-level clamp support system: S11. As needed, at a certain height on the upper end of the prestressed concrete pipe pile (100), place the two arc-shaped stirrups (11) in the lower support clamping device (1) horizontally and clamp them on the outer wall of the prestressed concrete pipe pile (100), and tighten and fix the two arc-shaped stirrups (11) with fastening bolts (12). S12. Insert the front ends of several cantilever support steel bars (14) into several clamping nuts (13) set on the outer end face of the arc-shaped stirrup (11) in the lower support clamping device (1). The external thread of the cantilever support steel bar (14) matches the internal thread of the clamping nut (13) to fix the cantilever support steel bar (14) and the clamping nut (13), thereby realizing the establishment of the lower clamping support system on the prestressed concrete pipe pile (100). S2. Construct the lower-level frictional internal and external platform: S21. The prefabricated plate-shaped inner platform (2) with a central pile hole (21) is fitted onto the prestressed concrete pipe pile (100), and the inner platform (2) is tightly attached to several cantilevered support steel bars (14) installed on the lower support clamp device (1). S22. The prefabricated plate-shaped outer platform (3) with a central hole in the outer platform is fitted onto the outside of the inner platform (2), and the hole wall of the central hole of the outer platform (3) is fitted to the outer peripheral wall of the inner platform (2). S23. Screw several clamping screws (41) one by one into several clamping nut holes (22) pre-set on the end faces of the outer platform (3) and the inner platform (2) by means of thread engagement; S24. When the front end of the tightening screw (41) is exposed into the pile hole (21), install the prefabricated tightening end (42) one by one on the front end of the tightening screw (41), and then continue to screw in the tightening screw (41) so that the tightening end (42) at the front end of the tightening screw (41) is pressed against the outer wall of the prestressed concrete pipe pile (100), thereby realizing the construction of the friction-type inner and outer platform; S3. Construct the upper-level clamp support system: S31. As needed, on the outer wall of the prestressed concrete pipe pile (100) at a certain height above the inner platform (2), place the two arc-shaped stirrups (11) in the upper support clamping device (5) horizontally and clamp them on the outer wall of the prestressed concrete pipe pile (100), and tighten and fix the two arc-shaped stirrups (11) with fastening bolts (12). S32. Insert the front ends of several cantilever support steel bars (14) into several clamping nuts (13) set on the outer end face of two arc-shaped stirrups (11) fixed in the upper support clamping device (5). The cantilever support steel bars (14) and clamping nuts (13) are fixed by matching the external thread of the front end of the cantilever support steel bars (14) with the internal thread of the clamping nuts (13). S33. Then, the prefabricated plate-shaped concrete support template (6) with a pile hole (21) in the center is fitted onto the prestressed concrete pipe pile (100), and the concrete support template (6) is tightly attached to several cantilever support steel bars (14) installed on the upper support clamp device (5). S34. Several connecting rod holes are pre-set on the concrete support formwork (6) and the inner platform (2) or outer platform (3). Finally, the upper and lower ends of several supporting connecting rods (7) are installed in the connecting rod holes of the concrete support formwork (6) and the inner platform (2) or outer platform (3), and the two nuts are fixed to the two ends of the supporting connecting rods (7) by thread engagement, thereby realizing the construction of the upper clamp support system on the prestressed concrete pipe pile (100); the entire construction process of the double-layer clamp concrete formwork support system is completed.

2. The construction method of the double-layer clamp concrete formwork support system according to claim 1, characterized in that, The lower support clamp device (1) and the upper support clamp device (5) are both composed of two arc-shaped stirrups (11). One end of the two arc-shaped stirrups (11) is fixed together by hinge, and the other end is fixed by fastening bolts (12); or both ends of the two arc-shaped stirrups (11) are fixed by fastening bolts (12).

3. The construction method of the double-layer clamp concrete formwork support system according to claim 2, characterized in that, The lower support clamp device (1) and the upper support clamp device (5) have several cantilevered support steel bars (14) arranged radially with the center of the central hole formed by two arc-shaped stirrups (11) as the center point. The several clamps with embedded nuts (13) and cantilevered support steel bars (14) are all arranged in the same horizontal plane.

4. The construction method of the double-layer clamp concrete formwork support system according to claim 3, characterized in that, The lower support clamp device (1), the upper support clamp device (5) and the inner platform (2) are all attached to the outer wall of the prestressed concrete pipe pile (100). The prestressed concrete pipe pile (100) is located at the center of the pile hole (21) in the center of the inner platform (2) and the center hole formed by the two arc-shaped stirrups (11) of the lower support clamp device (1) and the upper support clamp device (5).

5. The construction method of the double-layer clamp concrete formwork support system according to claim 1, characterized in that, The inner platform (2) and the outer platform (3) are on the same plane. Several of the clamping nut holes (22) and clamping screws (41) are arranged radially with the center of the pile hole (21) of the inner platform (2) as the center point.

6. The construction method of the double-layer clamp concrete formwork support system according to claim 4, characterized in that, In step S2, the clamping end (42) is suspended in the pile hole (21) in the center of the inner platform (2) and fixed to the front end of the clamping screw (41). The clamping end (42) consists of a steel component at the rear end and a rubber component at the front end, and the rubber component is pressed against the outer wall of the prestressed concrete pipe pile (100).

7. The construction method of the double-layer clamp concrete formwork support system according to claim 1, characterized in that, In step S2, the inner platform (2) and the outer platform (3) are both integrally formed or assembled and fixed from multiple parts, and are plate-type platforms with a circular or square metal or plastic structure; and the hole wall of the outer platform center hole of the outer platform (3) is in contact with the outer peripheral wall of the inner platform (2).

8. The construction method of the double-layer clamp concrete formwork support system according to claim 1, characterized in that, In step S3, the concrete support formwork (6) is a plate platform with a circular or square shape, made of metal or plastic, or formed by the integral molding or splicing and fixing of multiple parts.

Images