A prefabricated formwork suitable for shear walls with side grooves

Abstract

The present invention discloses a prefabricated formwork suitable for shear walls with grooves on the sides, belonging to the field of building technology. The formwork comprises a longitudinal beam and parallel and symmetrically arranged transverse beams. The longitudinal beam comprises an inner module and an outer module. The outer module is detachably connected to both ends of the transverse beam and forms a rectangular casting area therewith. The transverse beam is provided with a card interface. The outer module is provided with a plug-in protrusion for blocking the card interface. A plug-in hole is formed between the plug-in protrusion and the card interface for the inner module to extend into the rectangular casting area. The inner module comprises two wedge-shaped blocks distributed vertically. The ends of the wedge-shaped blocks are provided with a knocking portion that can cause the two wedge-shaped blocks to be staggered. The knocking portion is detachably connected to the outer module via a connecting piece. After casting is completed, a groove can be formed at the wedge-shaped block on the side of the prefabricated wall panel. When disassembling, knocking the knocking portion can cause the two wedge blocks to be dislocated, so that the groove loses its pressure on the wedge block, making it easier to remove. This solves the problem of difficult demoulding of shear walls with grooves and the inability to produce them efficiently.

Description

Technical Field

[0001] The invention relates to the technical field of construction equipment, in particular to a prefabricated template suitable for shear walls with side grooves. Background Art

[0002] Prefabricated shear wall formwork is a temporary support structure used in the production of prefabricated shear walls. After bolting it to the formwork, a steel cage is tied into the prefabricated shear wall formwork. Concrete is then poured and steam-cured to complete the formation of the prefabricated shear wall. Prefabricated shear wall formwork is typically square-shaped. For example, the utility model patent with the patent number "201820671802.9," entitled "Formwork for Prefabricated Wall Panels," discloses an assemblable square-shaped formwork comprising parallel longitudinal beams and parallel transverse beams. The transverse beams have insertion holes at both ends, and the longitudinal beams have insertion protrusions at both ends. The two insertion protrusions of one longitudinal beam are inserted into the insertion holes of the two transverse beams, respectively, while the two insertion protrusions of the other longitudinal beam are inserted into the other insertion holes of the two transverse beams. Fixing holes are provided on the transverse beams and the longitudinal beams. Once the longitudinal and transverse beams are assembled, they form a square-shaped formwork for casting prefabricated shear wall panels.

[0003] However, both the existing technology and the above-mentioned patents can only produce prefabricated shear wall panels without grooves on the sides, and there are few prefabricated formworks that can produce shear walls with grooves on the sides. The reason why there are few studies and designs on prefabricated formworks for shear walls with grooves on the sides is that in order to form rectangular grooves on the longitudinal sides of such shear walls during production, a rectangular protrusion must be pre-set on the longitudinal beam. After the pouring is completed, if the rectangular protrusion in the side groove of the shear wall is demolded during the initial setting period, it is easy to cause cracks or even fractures in the groove wall of the shear wall, thereby reducing the quality of the prefabricated wall. If the mold is demolded after the prefabricated wall is autoclaved and cured, the rectangular protrusion will be squeezed by the concrete on three sides of the groove, which will make demolding difficult, making it difficult to achieve high production efficiency, thereby hindering the promotion and application of shear walls with grooves. Summary of the Invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems and provide a prefabricated formwork suitable for shear walls with grooves on the side. A rectangular casting area can be formed between the outer module and the transverse beam, and an insertion hole for the inner module to be inserted into the concrete casting area can be formed between the plug-in interface of the outer module and the transverse beam. After the two wedge blocks are inserted into the concrete casting area and the casting is completed, grooves can be formed at the wedge blocks on the side of the prefabricated wall panel. When disassembling, after removing the outer module, the wedge blocks are knocked laterally to cause the upper and lower wedge blocks to be misaligned, so that the groove loses the squeezing of the two wedge blocks, making it easier to remove the wedge blocks, thereby solving the problems of difficult demoulding of prefabricated shear walls with grooves, harsh demoulding time, and inability to produce efficient large quantities.

[0005] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention discloses a prefabricated formwork suitable for a shear wall with side grooves, comprising a longitudinal beam and parallel and symmetrically arranged transverse beams, the longitudinal beam comprising an inner module and an outer module, the outer module being detachably connected to both ends of the transverse beam and forming a rectangular casting area with the transverse beam, the transverse beam being provided with a card interface, the outer module being provided with a plug-in protrusion for inserting into and sealing the opening of the card interface, a plug-in hole being provided between the plug-in protrusion and the bottom of the card interface for the inner module to extend into the rectangular casting area, the inner module comprising two wedge-shaped blocks distributed up and down and capable of being fitted into a rectangular strip, the end of the wedge-shaped block being provided with a knocking part which is subjected to force and can cause the two wedge blocks to be staggered, the knocking part being located outside the plug-in hole, and the knocking part being detachably connected to the outer module via a connecting piece.

[0006] Preferably, the two wedge-shaped blocks are identical.

[0007] Preferably, the plug-in protrusion is provided with a mounting groove for clamping the end of the rectangular transverse reinforcement and a clamping groove for clamping the rectangular stirrup.

[0008] Preferably, the outer module is a box-shaped module with an opening on one side, and the plug-in protrusion is located on a side of the box-shaped module away from the opening.

[0009] Preferably, the box-shaped module is provided with reinforcing ribs inside.

[0010] Preferably, the connecting member includes an end fixing plate, and the end fixing plate includes an inner mold connecting portion and an outer mold connecting portion, the inner mold connecting portion is bolted to the wedge block, and the outer mold connecting portion is bolted to the box-type module.

[0011] Preferably, a mounting plate is provided on the top of the transverse beam, and the mounting plate is connected to the top of the box-type module by bolts.

[0012] Preferably, the transverse beam is provided with a through hole for the circular tube mold to pass through.

[0013] Preferably, the mounting plate is provided with a lifting lug plate for easy lifting.

[0014] Preferably, a buried hole for inserting a straight threaded sleeve is provided on the transverse beam used to form the top of the shear wall.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] 1. The precast formwork of the present invention is suitable for precast side shear walls with grooves. It is mainly composed of a longitudinal beam and a transverse beam, and a rectangular concrete pouring area can be formed between the longitudinal beam and the transverse beam. The longitudinal beam is composed of an inner module and an outer module, and an insertion hole for the inner module to be inserted into the concrete pouring area can be formed between the outer module and the plug-in interface of the transverse beam. The inner module is composed of two wedge-shaped blocks that can form a rectangular strip. After the steel cage is tied, the two wedge blocks are inserted into the concrete pouring area through the insertion hole and then pouring can be carried out. The precast wall panel forms a groove at the inner module and the plug-in protrusion; when disassembling, after the outer module is removed, the wedge block has space to move toward the opening direction of the plug-in interface. By knocking the knocking part of the upper wedge block end in the direction of the plug-in interface opening, the upper and lower wedge blocks can be dislocated, so that the groove loses the squeezing of the two wedge blocks, which facilitates the removal of the wedge blocks, solves the problems of difficult demoulding of precast shear walls with grooves, harsh demoulding time, and inability to produce efficient and large quantities.

[0017] 2. The outer module of the present invention is a hollow box-shaped module, which can effectively reduce the weight of the outer module, thereby reducing the weight of the entire prefabricated template and facilitating transportation and assembly.

[0018] 3. The wedge-shaped block and the outer module of the present invention are connected by end fixing plates and bolts, which can ensure the stability of the wedge-shaped block during the casting process. At the same time, it is easy to separate the outer module from the wedge-shaped block after maintenance.

[0019] 4. The transverse beam of the present invention is connected to the top of the outer module through the mounting plate by bolts, which can ensure the stability of the outer module and facilitate disassembly.

[0020] 5. The transverse beams of the present invention are provided with through holes for the circular tube molds to pass through, and prefabricated shear wall panels with cylindrical through holes in the middle can be prefabricated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the prefabricated template;

[0023] Figure 2 It is a side view of the prefabricated formwork;

[0024] Figure 3 This is the front view of the prefabricated template;

[0025] Figure 4It is a front view of a prefabricated formwork without end fixing plates;

[0026] Figure 5 Schematic diagram of the inner three-dimensional structure of the longitudinal beam;

[0027] Figure 6 Schematic diagram of the outer three-dimensional structure of the longitudinal beam;

[0028] Figure 7 Schematic diagram of the inner three-dimensional structure of the transverse beam;

[0029] Figure 8 Schematic diagram of the outer three-dimensional structure of the transverse beam;

[0030] Figure 9 Schematic diagram of the three-dimensional structure of the upper wedge block;

[0031] Figure 10 Schematic diagram of the three-dimensional structure of the lower wedge block;

[0032] Figure 11 Schematic diagram of the three-dimensional structure of the end fixing plate;

[0033] Figure 12 This is the front view of the precast formwork without the wedge blocks inserted.

[0034] Explanation of the accompanying reference numerals: 1. Horizontal beam; 2. External module; 3. Wedge block; 4. End fixing plate; 5. Mounting plate bolt hole; 11. Card interface; 12. Through hole; 13. Mounting plate; 14. Lifting ear plate; 21. Plug-in protrusion; 22. Card slot; 23. Plug-in hole; 24. Mounting slot; 25. Reinforcing rib; 26. External module bolt hole; 31. Striking part; 32. Wedge block bolt hole; 41. Inner mold bolt hole; 42. External mold bolt hole. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] This embodiment provides a prefabricated template suitable for shear walls with side grooves, such as Figures 1 to 12As shown, it includes two transverse beams 1 and two longitudinal beams. The two transverse beams 1 are arranged in parallel and symmetrically, and a card interface 11 is provided on the transverse beams 1. Specifically, the longitudinal beams each include an inner module and an outer module 2. The outer module 2 is detachably connected to the two ends of the two transverse beams 1, and a rectangular casting area for casting is formed between the two outer modules 2 and the two transverse beams 1. The outer modules 2 have a plug-in protrusion 21. After the plug-in protrusion 21 is inserted into the card interface 11, it can block the opening of the upper card interface 11. The plug-in protrusion 21 is a certain distance away from the bottom of the card interface 11. This distance forms a plug-in hole 23 between the plug-in protrusion 21 and the bottom of the card interface 11. After the inner module is inserted into the plug-in hole 23 of one transverse beam 1, it can extend into the rectangular casting area and then extend out of the plug-in hole 23 of the other transverse beam 1. The inner module comprises two wedge-shaped blocks 3, which are arranged vertically and fit together to form a rectangular strip. One side of each wedge-shaped block 3 fits against the insertion protrusion 21, while the other side fits against the bottom of the latch interface 11, thereby forming a groove in the precast wall panel during pouring. The ends of the wedge-shaped blocks 3 are provided with striking portions 31, which are designed to withstand force and cause the two wedge-shaped blocks 3 to stagger. These striking portions 31 are located at the end of the inner module extending beyond the insertion hole 23, facilitating striking. These striking portions 31 are detachably connected to the outer module 2 via connectors. Once these striking portions 31 are connected, the longitudinal reinforcement formed by the inner and outer modules 2 remains parallel and symmetrical. After pouring concrete into the rectangular pouring area between the two transverse beams 1 and the two outer modules 2, the presence of the inner module creates a groove on the side of the precast wall at the pouring location. By removing the outer module 2, removing the two wedge-shaped blocks 3, and pulling the transverse beam 1 upward, a precast shear wall with grooved sides is formed. The top transverse beam 1 of the two transverse beams 1 can be adjusted along the height direction of the inner module to realize the production of walls of different heights. Figure 1 For example, the transverse beam 1 at the right end can move forward and backward along the length direction of the inner module.

[0037] Production process:

[0038] First, on the production mold platform, according to the design size, the plug-in protrusions 21 of the two outer modules 2 are respectively inserted into the card interfaces 11 at both ends of the two transverse beams 1, and then the outer modules 2 and the transverse beams 1 are fixed; then, a steel cage composed of transverse steel bars and longitudinal steel bars is arranged in the rectangular casting area formed by the outer modules 2 and the transverse beams 1; then, the wedge block 3 located at the bottom is first installed on the two transverse beams 1 through the plug-in hole 23, and then the wedge block 3 located above is inserted into the wedge block 3 at the bottom to assemble into a rectangular inner module, and the knocking part 31 and the outer module 2 are connected with the connecting piece to fix the wedge block 3 and the outer module 2. Fixed; then, pour concrete into the rectangular pouring area; then, after autoclaving and curing, remove the connectors and remove the outer module 2 from the two transverse beams 1. At this time, the wedge blocks 3 in the card interface 11 have a certain amount of activity space in the horizontal direction. Slightly tap the knocking part 31 in the direction of the opening of the card interface 11, and the two wedge blocks 3 will shift, and then the wedge blocks 3 will be easily peeled off from the prefabricated wall, and the wedge blocks 3 can be pulled out from the card interface 11. After pulling out, grooves are formed on the sides of the prefabricated shear wall; finally, pull out the two transverse beams 1 upward to complete the production of the concrete shear wall with grooves on the side arms.

[0039] In this embodiment, Figures 1 to 12 As shown, the two wedge blocks 3 are completely identical. On the one hand, the completely identical wedge blocks 3 are easier to fit together. On the other hand, when the striking portion 31 is struck, the two wedge blocks 3 are more likely to be dislocated.

[0040] In this embodiment, Figures 1 to 12 As shown, the plug-in protrusion 21 is provided with a mounting groove 24 and a clamping groove 22. The clamping groove 22 and the mounting groove 24 form a group, and the plug-in protrusion 21 is provided with several groups of clamping grooves 22 and mounting grooves 24. The mounting grooves 24 are used to clamp the ends of the rectangular transverse reinforcement, thereby replacing the transverse reinforcement with rectangular transverse reinforcement. Compared with the transverse reinforcement, the ends of the rectangular transverse reinforcement are respectively clamped into the mounting grooves 24 on the two plug-in protrusions 21. This not only improves the connection between the two outer modules 2, but also surrounds the longitudinal reinforcement. After binding, it can effectively improve the integrity of the reinforcement cage. The clamping grooves 22 are used to clamp the ends of the rectangular stirrups. Several rectangular stirrups can be poured later to improve the strength of the grooves on the side of the shear wall.

[0041] In this embodiment, Figures 1 to 12 As shown, the outer module 2 is a box-shaped module with one side open, and the plug-in protrusion 21 is located on the side of the box-shaped module away from the opening. Setting the outer module 2 as a hollow box-shaped module can effectively reduce the weight of the prefabricated template as a whole, making it easier to carry and assemble.

[0042] Furthermore, in order to ensure the structural strength of the outer module 2, in this embodiment, Figures 1 to 12 As shown, reinforcing ribs 25 are provided inside the box-shaped module.

[0043] In this embodiment, Figures 1 to 12 As shown, the connector includes an end fixing plate 4, which includes an inner mold connecting portion and an outer mold connecting portion. The inner mold connecting portion is provided with inner mold bolt holes 41, and the outer mold connecting portion is provided with outer mold bolt holes 42. The corresponding wedge block 3 has wedge block bolt holes 32 at both ends, and the outer module 2 (box-shaped module) has outer module bolt holes 26 at both ends. After aligning the inner mold bolt holes 41 with the wedge block bolt holes 32 and the outer mold bolt holes 42 with the outer module bolt holes 26, bolts are inserted to secure the end fixing plate 4 to the wedge block 3 and outer module 2, thus securing the wedge block 3 and outer module 2.

[0044] In this embodiment, Figures 1 to 12 As shown, a mounting plate 13 is provided on the top of the transverse beam 1. This mounting plate 13 is bolted to the top of the box-shaped module (outer module 2). Specifically, mounting plate bolt holes 5 are provided on mounting plate 13, and longitudinal beam bolt holes are provided on the top of outer module 2. Aligning mounting plate bolt holes 5 with longitudinal beam bolt holes and inserting bolts secures transverse beam 1 to outer module 2. Preferably, transverse beam 1 and mounting plate 13 are integrally formed.

[0045] Furthermore, in this embodiment, if Figures 1 to 12 As shown, a through hole 12 is provided on the transverse beam 1, through which a circular tube mold can be inserted between the two transverse beams 1. After pouring concrete in the rectangular pouring area, the middle of the prefabricated shear wall has a cylindrical through hole.

[0046] Furthermore, in order to facilitate lifting the transverse beam 1 upward, in this embodiment, Figures 1 to 12 Shown, be provided with the lifting lug plate 14 of convenient lifting on the mounting plate 13. Hook the lifting eye of the lifting lug plate 14 by a hook, just can lift the transverse beam 1 by the lifting lug plate 14.

[0047] Furthermore, in this embodiment, an embedded hole is provided on the top transverse beam 1 (used to form the transverse beam 1 at the top of the shear wall, i.e., the top transverse beam 1), and the embedded hole is for the straight threaded sleeve to be inserted. After the shear wall is formed and demoulded, the straight threaded sleeve is used to facilitate on-site lifting.

[0048] The invention uses specific examples to illustrate the principles and implementation methods of the invention. The above examples are only intended to help understand the method and core concept of the invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the invention. In summary, the contents of this specification should not be construed as limiting the invention.

Claims

1. A prefabricated formwork suitable for shear walls with side grooves, characterized in that: The invention comprises a longitudinal beam and a transverse beam arranged in parallel and symmetrically, the longitudinal beam comprising an inner module and an outer module, the outer module being detachably connected to both ends of the transverse beam and forming a rectangular casting area with the transverse beam, the transverse beam being provided with a card interface, the outer module being provided with a plug-in protrusion for inserting into and blocking the opening of the card interface, a plug-in hole for the inner module to extend into the rectangular casting area being provided between the plug-in protrusion and the bottom of the card interface, the inner module comprising two wedge-shaped blocks distributed up and down and capable of being fitted into a rectangular strip, the ends of the wedge blocks being provided with a force capable of causing the two The wedge block has an offset knocking portion, and the knocking portion is located outside the plug-in hole, and the knocking portion is detachably connected to the outer module through a connecting piece; the outer module is a box-shaped module with an opening on one side, and the plug-in protrusion is located on the side of the box-shaped module away from the opening; the connecting piece includes an end fixing plate, and the end fixing plate includes an inner mold connecting portion and an outer mold connecting portion, the inner mold connecting portion is bolted to the wedge block, and the outer mold connecting portion is connected to the box-shaped module through bolts; a mounting plate is provided on the top of the transverse beam, and the mounting plate is connected to the top of the box-shaped module through bolts.

2. A prefabricated formwork suitable for shear walls with side grooves according to claim 1, characterized in that: The two wedge-shaped blocks are identical.

3. The prefabricated formwork suitable for shear walls with side grooves according to claim 1, characterized in that: The plug-in protrusion is provided with a mounting groove for clamping the end of the rectangular transverse reinforcement and a clamping groove for clamping the rectangular stirrup.

4. The prefabricated formwork suitable for shear walls with side grooves according to claim 1, characterized in that: The interior of the box-shaped module is provided with reinforcing ribs.

5. The prefabricated formwork suitable for shear walls with side grooves according to claim 1, characterized in that: The transverse beam is provided with a through hole for the circular tube mold to pass through.

6. The prefabricated formwork suitable for shear walls with side grooves according to claim 5, characterized in that: The installation plate is provided with a lifting lug plate for easy lifting.

7. The prefabricated formwork for shear walls with side grooves according to claim 6, characterized in that: The transverse beam used to form the top of the shear wall is provided with an embedded hole for the straight thread sleeve to be inserted.

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