Core mold component of composite shear wall formwork, precast concrete formwork and manufacturing method

Abstract

A core mold component of a composite shear wall formwork, a precast concrete formwork and a manufacturing method. The core mold component of a composite shear wall formwork comprises a first core mold assembly (10) and a second core mold assembly (20), wherein the first core mold assembly (10) comprises a first side plate (11), a first arc-shaped end plate (13) and a second side plate (12) which are connected in sequence; the second core mold assembly (20) comprises a third side plate (21), a second arc-shaped end plate (23) and a fourth side plate (22) which are connected in sequence; snap fastener structures (30) capable of snap-fitting the first core mold assembly (10) and the second core mold assembly (20) are arranged at ends of the first core mold assembly (10) and the second core mold assembly (20); and the third side plate (21) and the fourth side plate (22) are further provided with first force-bearing rods (26) capable of making the third side plate (21) and the fourth side plate (22) approach each other and deform. The core mold component is convenient to manufacture, has high efficiency, and is stable and reliable to use.

Description

Core mold components, precast concrete mold shells, and manufacturing methods for composite shear wall formwork Technical Field

[0001] This application relates to the field of prefabricated concrete construction technology, and in particular to a core mold component for a composite shear wall formwork, a precast concrete formwork, and a manufacturing method thereof. Background Technology

[0002] In recent years, in order to alleviate the labor shortage and achieve short construction periods and low carbon emissions, my country has begun to promote prefabricated buildings. As an emerging green, environmentally friendly and energy-saving building type, it has advantages such as fast construction speed, less impact from climate conditions, saving on-site labor, and improving building quality, and has become a new direction for the future development of the construction industry.

[0003] The self-weight of fully precast concrete shear walls places high demands on the performance of transportation and hoisting equipment, and the on-site assembly process is complicated and the construction quality is difficult to inspect.

[0004] Prefabricated composite shear walls are typically constructed by connecting two layers of precast reinforced concrete slabs with trusses or connectors to form a wall panel component with a central cavity. After on-site installation, concrete is poured into the central cavity. Prefabricated composite shear walls are now being used in engineering projects. Compared to fully precast concrete shear walls, prefabricated composite shear walls offer advantages such as lighter weight, lower precision requirements for processing and installation, and greater tolerance for errors, making them a promising prefabricated concrete structural system.

[0005] Precast concrete formwork is a crucial component of assembled composite shear walls. The process of precasting requires creating an internal cavity, necessitating the use of core mold components. Currently, the production of precast concrete formwork suffers from cumbersome procedures and low production efficiency. Furthermore, the application of precast composite shear walls in construction presents challenges such as ensuring the quality of reinforcement connections, difficulties in concrete pouring and vibration, and the inability of the precast concrete formwork to overlap with the cast-in-place concrete for load-bearing. These issues hinder the timely progress of the project and pose potential structural safety hazards. Summary of the Invention

[0006] In order to improve the production efficiency of prefabricated composite shear walls and reduce the production cost of precast concrete formwork, this application provides a core mold component for composite shear wall formwork, a precast concrete formwork, and a manufacturing method thereof.

[0007] In a first aspect, this application provides a core mold component for a composite shear wall formwork, comprising a first core mold assembly and a second core mold assembly. The first core mold assembly includes a first side plate and a second side plate spaced apart from each other. The first side plate and the second side plate are fixedly connected at one end by a first arc-shaped end plate, and a first opening is formed between the other ends of the first side plate and the second side plate. The second core mold assembly includes a third side plate and a fourth side plate spaced apart from each other. The third side plate and the fourth side plate are fixedly connected at one end by a second arc-shaped end plate, and a second opening is formed between the other ends of the third side plate and the fourth side plate. A snap-fit ​​structure is provided at the end of the first side plate near the first opening, the end of the third side plate near the second opening, and the end of the second side plate near the first opening, and the end of the fourth side plate near the second opening, capable of engaging the ends of the first side plate and the third side plate, and the end of the second side plate and the fourth side plate together. A first support rod is also provided on the third side plate and the fourth side plate, enabling them to deform towards each other.

[0008] By adopting the above technical solution, the first core mold assembly and the second core mold assembly can be conveniently assembled and disassembled, which can effectively realize the hole-forming process of precast concrete mold shells, improve the production and demolding efficiency of precast concrete mold shells, increase the production efficiency of precast concrete mold shells, reduce the production cost of precast concrete mold shells, and ensure the molding quality and structural stability of precast concrete mold shells.

[0009] Optionally, the snap-fit ​​structure includes grooves on the outer surfaces of the ends of the third side plate and the fourth side plate, and protrusions on the inner surfaces of the ends of the first side plate and the second side plate. The protrusions can be fitted into the corresponding grooves to form a snap-fit.

[0010] By adopting the above-mentioned technical solution, the groove and protrusion design of the interlocking structure allows the first core mold assembly and the second core mold assembly to be tightly connected, ensuring the integrity and stability of the core mold components and preventing misalignment or detachment during the pouring process. Furthermore, this snap-fit ​​method facilitates the assembly and disassembly of the core mold components, improves their reusability, and reduces the production cost of precast concrete mold shells.

[0011] Optionally, the third side plate and the fourth side plate have a first groove recessed towards the opposite side, and the first force-bearing rod is inserted into the corresponding first groove, wherein the groove width of the first groove is smaller than the diameter of the first force-bearing rod.

[0012] By adopting the above technical solution, the first support rod is firmly fixed on the third and fourth side plates, preventing it from falling off during the application of pressure. This ensures the stability and reliability of the core mold component, improves the hole formation quality of the precast concrete mold shell, and facilitates installation.

[0013] Optionally, a support rib is provided between the first side plate and the second side plate, and a follower rod is provided on the support rib; a second support rod is provided on both the first side plate and the second side plate.

[0014] Optionally, the first side plate and the second side plate have a second groove recessed to the opposite side, and the second force-bearing rod is inserted into the corresponding second groove. The groove width of the second groove is smaller than the diameter of the second force-bearing rod. The upper side of the support rib is provided with a third groove, and the follower rod is inserted into the corresponding third groove. The groove width of the third groove is smaller than the diameter of the follower rod.

[0015] By adopting the above technical solution, the second supporting rod and the driven rod can be securely inserted into their corresponding second and third slots, preventing them from loosening or falling off during the use of the core mold component due to vibration or other external factors, thus ensuring the stability and reliability of the core mold component. Furthermore, the design of the slot width of the second and third slots being smaller than the diameter of the second supporting rod and the driven rod further enhances their locking effect, ensuring that the core mold component maintains good structural integrity under external forces, and improving the manufacturing quality and production efficiency of the precast concrete mold shell.

[0016] Optionally, the distance between the support rib and the protrusions on the first side plate and the second side plate is 15 to 50 mm.

[0017] Optionally, the sides of the first holding rod, the second holding rod, and the following rod all have planes, and the maximum radial dimension h of the first holding rod, the second holding rod, and the following rod perpendicular to the corresponding plane is less than the width b of the plane.

[0018] By adopting the above technical solution, these rods can be inserted and fixed more stably in the corresponding slots, preventing them from coming loose during use, thereby ensuring the overall stability of the core mold components.

[0019] Optionally, the first side plate, the second side plate, and the first arc-shaped end plate are integrally formed, and the third side plate, the fourth side plate, and the second arc-shaped end plate are integrally formed. The outer peripheral surfaces of the first arc-shaped end plate and the second arc-shaped end plate have protrusions. The slope of one side of the protrusion is greater than the slope of the other side.

[0020] By adopting the above technical solution, the overall stability and strength of the core mold component are improved. The protruding parts allow the precast concrete mold shell to make better contact with the cast-in-place concrete during the concrete pouring process, enhancing the stability and reliability of the entire composite shear wall. The slope of one side of the protruding part is greater than that of the other side, making it easier to pull the core mold component out of the concrete during removal, reducing resistance during the removal process and improving work efficiency.

[0021] Secondly, the precast concrete formwork for a composite shear wall provided in this application adopts the following technical solution:

[0022] A precast concrete formwork for a composite shear wall is made using the aforementioned core mold component. The precast concrete formwork includes a first concrete slab and a second concrete slab arranged in parallel and spaced apart. A plurality of longitudinal ribs are spaced apart between the first concrete slab and the second concrete slab. Two adjacent longitudinal ribs, together with the first concrete slab and the second concrete slab, form a through vertical hole. The through vertical hole is formed by the core mold component. The outermost longitudinal rib, together with the first concrete slab and the second concrete slab, forms a through semi-hole. The through semi-hole is formed by the first core mold assembly or the second core mold assembly in the core mold component.

[0023] The first and second concrete slabs are provided with wire mesh, the longitudinal ribs are provided with tie bars, and the top of the first concrete slab, the second concrete slab, or the longitudinal ribs is provided with a lifting device.

[0024] The precast concrete formwork in this application has several through vertical holes, a relatively thin formwork, and internal wire mesh to enhance its rigidity. The precast concrete formwork in this application can effectively improve the quality of precast concrete formwork and reduce its cost.

[0025] Thirdly, the method for manufacturing a precast concrete formwork for a composite shear wall provided in this application adopts the following technical solution:

[0026] A method for manufacturing a precast concrete formwork for a composite shear wall, comprising the above-mentioned core mold component, and the method comprising the following steps:

[0027] S1: Set up the formwork: Set up two parallel and spaced templates, and tie wire mesh and reinforcing bars between the two templates;

[0028] S2: Setting core mold components: According to the set position of the middle cavity of the precast concrete mold shell, several sets of core mold components are set. When setting the core mold components, pressure is applied to the support rod on the second core mold assembly to cause the third side plate and the fourth side plate of the second core mold assembly to deform and move closer together, so that the snap-fit ​​structure on the first core mold assembly and the second core mold assembly forms a snap-fit ​​connection, and the first core mold assembly and the second core mold assembly form a core mold component.

[0029] S3: Pouring: Pouring concrete and vibrating it;

[0030] S4: Demolding: After the concrete strength is increased, remove the core mold components and the platform mold; when removing the core mold components, install the rotating shaft mechanism on the driven rod and the second supporting rod in the first core mold assembly. The rotating shaft component drives the driven rod in the first core mold assembly to move, the supporting rib in the first core mold assembly to deform, and the snap-fit ​​structure to move outward; at the same time, apply pressure to the first supporting rod in the second core mold assembly, and the snap-fit ​​structure to deform. At this time, the second core mold assembly can be separated from the first core mold assembly and pulled out along the length of the mold shell to realize the separation of the core mold components from the concrete mold shell to form a hole.

[0031] By adopting the above technical solutions, a highly efficient hole-forming process for precast concrete formwork of composite shear walls has been achieved, which has improved the production efficiency of precast concrete formwork, reduced production costs, and ensured the quality and reliability of the formwork.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. The specially designed core mold component in this application enables convenient assembly and disassembly of the first core mold assembly and the second core mold assembly, which can effectively realize the hole-forming process of precast concrete mold shells, improve the production and demolding efficiency of precast concrete mold shells, increase the production efficiency of precast concrete mold shells, reduce the production cost of precast concrete mold shells, and ensure the molding quality and structural stability of precast concrete mold shells.

[0034] 2. By setting a first support rod in this application, the third side plate and the fourth side plate can be deformed to move closer together when pressure is applied, thereby facilitating the assembly of the first core mold assembly and the second core mold assembly into a whole, simplifying the installation process of the core mold components and improving the convenience of construction.

[0035] 3. In this application, a follower rod is set on the support rib, which, together with the rotating shaft mechanism, can effectively deform the first core mold assembly, causing the snap-fit ​​structure to shift outward, thereby realizing the smooth separation of the core mold component from the precast concrete mold shell, avoiding the damage to the mold shell that may be caused during the traditional demolding process, and improving the reusability of the mold shell. Attached Figure Description

[0036] Figure 1 is a schematic diagram of the structure when the first core mold assembly and the second core mold assembly are separated in Embodiment 1 of this application.

[0037] Figure 2 is a schematic diagram of the structure of the first core mold assembly and the second core mold assembly combined in Embodiment 1 of this application.

[0038] Figure 3 is a schematic diagram of the cross-sectional structure of the first supporting rod, the second supporting rod, and the follower rod in Embodiment 1 of this application.

[0039] Figure 4 is a three-dimensional structural diagram of the rotating shaft mechanism in this application.

[0040] Figure 5 is a schematic diagram of the structure when the first core mold assembly and the second core mold assembly are separated in Embodiment 2 of this application.

[0041] Figure 6 is a schematic diagram of the structure of the first core mold assembly and the second core mold assembly combined in Embodiment 2 of this application.

[0042] Figure 7 is a schematic diagram of the protrusion portion in Embodiment 2 of this application.

[0043] Figure 8 is a top view of the composite shear wall formwork in this application.

[0044] Figure 9 is a three-dimensional structural diagram of the composite shear wall formwork in this application.

[0045] In the diagram: 10. First core mold assembly; 11. First side plate; 12. Second side plate; 13. First arc-shaped end plate; 14. First opening; 15. Second slot; 16. Second support rod; 17. Support rib; 18. Third slot; 19. Driven rod; 20. Second core mold assembly; 21. Third side plate; 22. Fourth side plate; 23. Second arc-shaped end plate; 24. Second opening; 25. First slot; 26. First support rod; 30. Snap-fit ​​structure; 31. Groove; 32. Protrusion; 40. Protruding part; 50. First concrete slab; 51. Second concrete slab; 52. Longitudinal rib; 53. Through vertical hole; 54. Through half hole; 55. Wire mesh; 56. Tie rod; 57. Lifting component; 58. Limiting component; 60. Rotating shaft mechanism; 61. Rotating shaft part; 62. Rotating mold part; 63. Connecting rod. Detailed Implementation

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to Figures 1 to 9. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0047] Example 1

[0048] Referring to Figures 1 and 2, the core mold component of the composite shear wall formwork provided in this embodiment includes a first core mold assembly 10 and a second core mold assembly 20. The first core mold assembly 10 includes a first side plate 11 and a second side plate 12 arranged at relatively intervals. The first side plate 11 and the second side plate 12 are fixedly connected at one end by a first arc-shaped end plate 13. The first side plate 11, the second side plate 12 and the first arc-shaped end plate 13 are integrally formed. The outer peripheral surfaces of the first side plate 11, the second side plate 12 and the first arc-shaped end plate 13 are smooth surfaces. A first opening 14 is formed between the other end of the first side plate 11 and the other end of the second side plate 12. The second core mold assembly 20 includes a third side plate 21 and a fourth side plate 22 arranged at relatively intervals. The third side plate 21 and the fourth side plate 22 are fixedly connected at one end by a second arc-shaped end plate 23. The third side plate 21, the fourth side plate 22, and the second arc-shaped end plate 23 are integrally formed. The outer peripheral surfaces of the third side plate 21, the fourth side plate 22, and the second arc-shaped end plate 23 are smooth surfaces. A second opening 24 is formed between the other end of the third side plate 21 and the other end of the fourth side plate 22. A snap-fit ​​structure 30 is provided between the end of the first side plate 11 near the first opening 14 and the end of the third side plate 21 near the second opening 24, and between the end of the second side plate 12 near the first opening 14 and the end of the fourth side plate 22 near the second opening 24, which can engage the ends of the first side plate 11 and the third side plate 21, and the ends of the second side plate 12 and the fourth side plate 22 together. A first support rod 26 is also provided on the third side plate 21 and the fourth side plate 22, which can deform by bringing them together.

[0049] Referring to Figures 1 and 2, the snap fastener structure 30 includes a groove 31 provided on the outer side surface of the end of the third side plate 21 and the fourth side plate 22, and a protrusion 32 provided on the inner side surface of the end of the first side plate 11 and the second side plate 12. The protrusion 32 can be embedded in the corresponding groove 31 to form a snap fastener. The protrusion 32 has a hemispherical curved surface, which makes it easy to slide into the groove 31.

[0050] Referring to Figures 1 and 2, a support rib 17 is also provided between the first side plate 11 and the second side plate 12. The support rib 17 enhances the stability of the first side plate 11 relative to the second side plate 12, improves the overall rigidity of the core mold component, and prevents deformation of the first side plate 11 and the second side plate 12 due to external forces during the pouring process, thus ensuring the accurate forming of the precast concrete mold shell. A follower rod 19 is provided on the support rib 17, and a second support rod 16 is provided on both the first side plate 11 and the second side plate 12. The provision of the follower rod 19 and the second support rod 16 makes it easier for the core mold component to deform during dismantling, thereby smoothly achieving the separation of the core mold component from the precast concrete mold shell, improving demolding efficiency and reducing operational difficulty.

[0051] Referring to Figures 2 and 3, both the first side plate 11 and the second side plate 12 have a second recessed groove 15 facing opposite sides. A second force-bearing rod 16 is inserted into the corresponding second groove 15, and the width of the groove 15 is smaller than the diameter of the second force-bearing rod 16. A third groove 18 is provided on the side of the support rib 17, and a follower rod 19 is inserted into the corresponding third groove 18. The width of the groove 18 is smaller than the diameter of the follower rod 19. Both the third side plate 21 and the fourth side plate 22 have a first recessed groove 25 facing opposite sides. A first force-bearing rod 26 is inserted into the corresponding first groove 25, and the width of the groove 25 is smaller than the diameter of the first force-bearing rod 26. This design allows the second supporting rod 16 to be securely inserted into its corresponding second slot 15, and the driven rod 19 to be securely inserted into its corresponding third slot 18. The first supporting rod 26 is firmly fixed to the third side plate 21 and the fourth side plate 22, preventing the first supporting rod 26, the second supporting rod 16, and the driven rod 19 from loosening or falling off due to vibration or other external factors during the use of the core mold component, thereby ensuring the stability and reliability of the core mold component. Furthermore, the slot width design of the first slot 25, the second slot 15, and the third slot 18 further enhances the locking effect of the first supporting rod 26, the second supporting rod 16, and the driven rod 19, ensuring that the core mold component maintains good structural integrity when subjected to external forces, thus improving the manufacturing quality and production efficiency of the precast concrete mold shell.

[0052] Furthermore, referring to Figures 2 and 3, in this application, the support rib 17 has a gap between itself and the protrusions 32 on the first side plate 11 and the second side plate 12, and this gap is 15-50 mm, for example, 10 mm. This allows the support rib 17 to deform appropriately when subjected to external force, thereby ensuring that the snap-fit ​​structure 30 can be smoothly disengaged during the demolding process of the core mold component. This avoids insufficient deformation of the support rib 17 due to too small a gap, which would affect the demolding effect, and also prevents insufficient support force of the support rib 17 due to too large a gap, which would affect the overall stability of the core mold component. The first support rod 26, the second support rod 16, and the driven rod 19 are all rigid rods and can be made of metals such as stainless steel. Each rod can be installed in the corresponding mounting groove by screwing or pushing in. The first support rod 26, the second support rod 16, and the follower rod 19 all have flat surfaces on their sides. The maximum radial dimension h of the first support rod 26, the second support rod 16, and the follower rod 19, which is perpendicular to the plane, is less than the width b of the plane. After the first support rod 26, the second support rod 16, and the follower rod 19 are installed in place, the plane of the second support rod 16 is flush with the outer surface of the corresponding first side plate 11 and the second side plate 12, the plane of the first support rod 26 is flush with the outer surface of the corresponding third side plate 21 and the fourth side plate 22, and the plane of the follower rod 19 is flush with the other side of the support rib 17.

[0053] In this application, the third side plate 21 and the fourth side plate 22 may be made of elastic materials, including but not limited to organic non-metallic materials.

[0054] The implementation principle is as follows: The core mold components are divided into a first core mold assembly 10 and a second core mold assembly 20 according to their structural differences. The second core mold assembly 20 is provided with a first force-bearing rod 26 that can be applied with pressure. In use, pressure is applied to the first force-bearing rod 26 on the second core mold assembly 20 to deform the third side plate 21 and the fourth side plate 22, thereby enabling the first core mold assembly 10 and the second core mold assembly 20 to fit together and form a snap-fit ​​connection through the snap-fit ​​structure 30. The first core mold assembly 10 and the second core mold assembly 20 form the core mold component.

[0055] Referring to FIG4, the core mold component in this application can be operated using a rotating shaft mechanism 60. The rotating shaft mechanism 60 includes a rotating shaft portion 61 and two spaced-apart rotating mold portions 62. The two rotating mold portions 62 are symmetrically arranged on both sides of the rotating shaft portion 61 and are rotatably connected to the rotating shaft portion 61 via connecting rods 63. The included angle between the two connecting rods 63 is less than 180 degrees. The rotating shaft portion 61 is structurally matched with the driven rod 19, and can be fitted onto the driven rod 19. The rotating mold portions 62 are structurally matched with the second supporting rods 16, and the two rotating mold portions 62 can be respectively fitted onto the two second supporting rods 16. Both the rotating mold portions 62 and the rotating shaft portion 61 are rotatable.

[0056] Referring to Figures 1 and 2, the rotating shaft mechanism 60 is installed onto the corresponding second supporting rod 16 and driven rod 19 in the first core mold assembly 10. Simultaneously, pressure is applied to the first supporting rod 26 on the second core mold assembly 20 and the rotating shaft mechanism 60 on the first core mold assembly 10. This causes a pair of grooves 31 in the snap-fit ​​structure 30 to displace inwards, and a pair of protrusions 32 in the snap-fit ​​structure 30 to displace outwards. The snap-fit ​​structure 30 can then detach from the mold shell, allowing it to be pulled out and form a vertical hole. Example 2

[0057] Referring to Figures 5, 6, and 7, this embodiment is largely the same as Embodiment 1, except that the outer peripheral surfaces of the first arc-shaped end plate 13 and the second arc-shaped end plate 23 in this embodiment have protrusions 40, and the slope of one side of the protrusions 40 is greater than the slope of the other side. Embodiment 3

[0058] Referring to Figures 8 and 9, this embodiment discloses a precast concrete formwork for a composite shear wall, which is made using the core mold component from Embodiment 1 or Embodiment 2. The precast concrete formwork in this embodiment includes a first concrete slab 50 and a second concrete slab 51 arranged in parallel intervals, with a plurality of longitudinal ribs 52 spaced apart between the first concrete slab 50 and the second concrete slab 51. Two adjacent longitudinal ribs 52, together with the first concrete slab 50 and the second concrete slab 51, form a through vertical hole 53, which is formed by the core mold component. The outermost longitudinal rib 52, together with the first concrete slab 50 and the second concrete slab 51, forms a through semi-hole 54, which is formed by the first core mold component 10 or the second core mold component 20. A wire mesh 55 is provided inside the first concrete slab 50 and the second concrete slab 51. The wire mesh 55 is connected by a combination of horizontal and vertical steel bars and has a coating or plating on its surface. Tie bars 56 are provided inside the longitudinal ribs 52. A hanging member 57 is provided at the top of the first concrete slab 50, the second concrete slab 51 or the longitudinal ribs 52, and a limiting member 58 is provided at the bottom.

[0059] The thickness of the precast concrete formwork shell in this application is between 20 and 40 mm. The dimensions of the through vertical hole 53 and the core mold component can be adjusted according to the thickness of the formwork shell. The structural shape includes, but is not limited to, a rounded rectangle. The forming process of the wire mesh 55 includes, but is not limited to, welding and binding connections. The diameter of the wire mesh 55 is between 2 and 8 mm. The arrangement of the tie rods 56 includes, but is not limited to, an X-shaped or quincunx arrangement. The diameter of the tie rods 56 is between 4 and 10 mm.

[0060] The precast concrete formwork in this application has several through vertical holes 53. The formwork thickness is small, and a wire mesh 55 is installed inside to improve the rigidity of the formwork. The precast concrete formwork in this application can effectively improve the quality of precast concrete formwork and reduce its cost. Example 4

[0061] This application discloses a method for manufacturing a precast concrete formwork shell for a composite shear wall. The method uses the core mold component from Embodiment 1 or Embodiment 2 to manufacture the precast concrete formwork shell from Embodiment 3. The manufacturing method includes the following steps:

[0062] S1: Set up the formwork: Set up two parallel and spaced templates, and tie wire mesh 55 and tie rod 56 between the two templates;

[0063] S2: Setting core mold components: According to the set position of the middle cavity of the precast concrete mold shell, several sets of core mold components are set. When setting the core mold components, pressure is applied to the support rod on the second core mold assembly 20 to cause the third side plate 21 and the fourth side plate 22 of the second core mold assembly 20 to deform and move closer together, so that the snap-fit ​​structure 30 on the first core mold assembly 10 and the second core mold assembly 20 forms a snap-fit ​​connection, and the first core mold assembly 10 and the second core mold assembly 20 form a core mold component.

[0064] S3: Pouring: Pouring concrete and vibrating it;

[0065] S4: Demolding: After the concrete strength is improved, the core mold components and the platform mold are removed. When removing the core mold components, the rotating shaft mechanism is installed on the driven rod 19 and the second supporting rod 16 in the first core mold assembly 10. The rotating shaft component drives the driven rod 19 in the first core mold assembly 10 to move, the supporting rib 17 in the first core mold assembly 10 to deform, and the snap-fit ​​structure 30 to move outward. At the same time, pressure is applied to the first supporting rod 26 in the second core mold assembly 20, and the snap-fit ​​structure 30 to deform. At this time, the second core mold assembly 20 can be separated from the first core mold assembly 10 and pulled out along the length of the mold shell to realize the separation of the core mold components from the concrete mold shell to form a hole.

[0066] This embodiment realizes an efficient hole-forming process for precast concrete formwork of composite shear walls, which improves the production efficiency of precast concrete formwork, reduces production costs, and ensures the quality and reliability of the formwork.

[0067] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A core module component of a composite shear wall formwork, characterized in that, It includes a first core mold assembly (10) and a second core mold assembly (20); The first core mold assembly (10) includes a first side plate (11) and a second side plate (12) arranged at a distance from each other. The first side plate (11) and the second side plate (12) are fixedly connected at one end by a first arc-shaped end plate (13). A first opening (14) is formed between the other end of the first side plate (11) and the other end of the second side plate (12). The second core mold assembly (20) includes a third side plate (21) and a fourth side plate (22) arranged at opposite intervals. The third side plate (21) and the fourth side plate (22) are fixedly connected at one end by a second arc-shaped end plate (23). A second opening (24) is formed between the other end of the third side plate (21) and the other end of the fourth side plate (22). The first side plate (11) near the first opening (14), the third side plate (21) near the second opening (24), the second side plate (12) near the first opening (14), and the fourth side plate (22) near the second opening (24) are provided with a snap-fit ​​structure (30) for engaging the ends of the first side plate (11) and the third side plate (21), and the ends of the second side plate (12) and the fourth side plate (22) together; the third side plate (21) and the fourth side plate (22) are also provided with a first support rod (26) that can make the two move closer together and deform.

2. The core module component of a composite shear wall formwork according to claim 1, wherein, The snap-fit ​​structure (30) includes a groove (31) on the outer side surface of the end of the third side plate (21) and the fourth side plate (22) and a protrusion (32) on the inner side surface of the end of the first side plate (11) and the second side plate (12). The protrusion (32) is used to be embedded in the corresponding groove (31) to form a snap-fit.

3. The core module component of a composite shear wall formwork according to claim 2, wherein, Both the third side plate (21) and the fourth side plate (22) have a first groove (25) recessed towards the opposite side. The first force-bearing rod (26) is inserted into the corresponding first groove (25). The groove width of the first groove (25) is smaller than the diameter of the first force-bearing rod (26).

4. The core module component of a composite shear wall formwork according to claim 3, wherein, A support rib (17) is provided between the first side plate (11) and the second side plate (12), and a follower rod (19) is provided on the support rib (17); a second support rod (16) is provided on both the first side plate (11) and the second side plate (12).

5. The core module component of a composite shear wall formwork according to claim 4, wherein, Both the first side plate (11) and the second side plate (12) have a second groove (15) recessed towards the opposite side. The second force-bearing rod (16) is inserted into the corresponding second groove (15). The groove width of the second groove (15) is smaller than the diameter of the second force-bearing rod (16). The upper side of the support rib (17) is provided with a third groove (18). The follower rod (19) is inserted into the corresponding third groove (18). The groove width of the third groove (18) is smaller than the diameter of the follower rod (19).

6. The core module component of a composite shear wall sleeve according to claim 4, wherein, The distance between the support rib (17) and the protrusions (32) on the first side plate (11) and the second side plate (12) is 15-50 mm.

7. The core module component of a composite shear wall sleeve according to claim 4, wherein, The sides of the first force-bearing rod (26), the second force-bearing rod (16), and the follower rod (19) all have planes. The maximum radial dimension h of the first force-bearing rod (26), the second force-bearing rod (16), and the follower rod (19) that is radially perpendicular to the corresponding plane is less than the width b of the plane.

8. The core model part of the composite shear wall formwork according to claim 1, characterized in that, The first side plate (11), the second side plate (12) and the first arc-shaped end plate (13) are integrally formed, and the third side plate (21), the fourth side plate (22) and the second arc-shaped end plate (23) are integrally formed. The outer peripheral surfaces of the first arc-shaped end plate (13) and the second arc-shaped end plate (23) have protrusions (40); the slope of one side of the protrusions (40) is greater than the slope of the other side.

9. A precast concrete form for a composite shear wall, characterized by, The precast concrete mold shell is made using any one of the core mold components described in claims 1 to 8. The precast concrete mold shell includes a first concrete slab (50) and a second concrete slab (51) arranged in parallel intervals. A plurality of longitudinal ribs (52) are arranged between the first concrete slab (50) and the second concrete slab (51). Two adjacent longitudinal ribs (52) together with the first concrete slab (50) and the second concrete slab (51) form a through vertical hole (53). The through vertical hole (53) is formed by the core mold component. The outermost longitudinal rib (52) together with the first concrete slab (50) and the second concrete slab (51) form a through half hole (54). The through half hole (54) is formed by the first core mold component (10) or the second core mold component (20) in the core mold component. The first concrete slab (50) and the second concrete slab (51) are provided with wire mesh (55), the longitudinal rib (52) is provided with tie rod (56), and the top of the first concrete slab (50), the second concrete slab (51) or the longitudinal rib (52) is provided with a hanging member (57).

10. A method of manufacturing a prefabricated concrete formwork of a composite shear wall, characterized in that, The precast concrete mold shell of claim 9 is manufactured using the core mold component described in any one of claims 1 to 8, and the manufacturing method includes the following steps: S1: Set up the formwork: Set up two parallel and spaced templates, and tie wire mesh (55) and tie rods (56) between the two templates; S2: Setting core mold components: According to the set position of the middle cavity of the precast concrete mold shell, several sets of core mold components are set. When setting the core mold components, pressure is applied to the support rod on the second core mold assembly (20) to cause the third side plate (21) and the fourth side plate (22) of the second core mold assembly (20) to deform and move closer together, so that the snap-fit ​​structure (30) on the first core mold assembly (10) and the second core mold assembly (20) forms a snap-fit ​​connection, and the first core mold assembly (10) and the second core mold assembly (20) form a core mold component; S3: Pouring: Pouring concrete and vibrating it; S4: Demolding: After the concrete strength is improved, the core mold components and the platform mold are removed; when the core mold components are removed, the rotating shaft mechanism (60) is installed on the follower rod (19) and the second support rod (16) in the first core mold assembly (10). The rotating shaft component drives the follower rod (19) in the first core mold assembly (10) to move, the support rib (17) in the first core mold assembly (10) to deform, and the snap-fit ​​structure (30) to move outward; at the same time, pressure is applied to the first support rod (26) in the second core mold assembly (20), and the snap-fit ​​structure (30) to deform. At this time, the second core mold assembly (20) can be separated from the first core mold assembly (10) and pulled out along the length of the mold shell, so as to realize the separation of the core mold components from the concrete mold shell to form a hole.

Images