L-shaped shear wall formwork for modular building

Abstract

The utility model provides an L-shaped shear wall formwork for a modular building. The L-shaped shear wall formwork comprises a first formwork shell and a second formwork shell which are oppositely arranged, and an internal steel bar set located between the two formwork shells. The internal reinforcing steel bar group comprises a first reinforcing steel bar mesh, a second reinforcing steel bar mesh, a first truss and a second truss; the first truss and the second truss extend in the height direction of the shear wall. The first end of the first truss is fixedly connected with the first reinforcing mesh and the first formwork, so that the first reinforcing mesh is flatly laid on the first formwork, and a first prefabricated assembly is formed; the first end of the second truss is fixedly connected with the second reinforcing mesh and the second formwork, so that the second reinforcing mesh is flatly laid on the second formwork, and a second prefabricated assembly is formed; and the second end of the first truss is fixedly connected with the second reinforcing mesh, and the first prefabricated assembly and the second prefabricated assembly are connected. The technical problems that a large number of steel bars need to be bound on site, and a formwork is only used as a formwork are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of shear wall structures, in particular to an L-shaped shear wall formwork for modular buildings. Background Art

[0002] Prefabricated shear walls are a new type of shear wall that is processed and produced in a factory using advanced processes and technologies and then transported to the site for installation. Compared with traditional cast-in-place concrete shear walls, prefabricated shear walls have the advantages of short manufacturing cycle, controllable quality, fast construction speed, energy conservation and environmental protection.

[0003] Existing prefabricated shear walls for concrete modular buildings usually use precast formworks integrated into concrete modules as formworks for pouring concrete, and have the following disadvantages: 1. A large amount of steel bars of the shear wall need to be tied on site, which limits the production efficiency; 2. The precast formworks are only used as formworks and do not participate in the structural stress of the shear wall, wasting materials and making the shear wall body thicker, occupying the available indoor area.

[0004] The prefabricated shear walls for concrete modular buildings include L-shaped shear walls, which are arranged along the corners and joints of the modules to increase the rigidity and stability of the overall structure of the modules.

[0005] Therefore, there is an urgent need for an improved L-shaped shear wall formwork for modular buildings. Summary of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] In view of the problems existing in the above technology, the utility model solves them at least to a certain extent. For this purpose, the utility model provides an L-shaped shear wall formwork for modular buildings, which solves the technical problems that a large amount of steel bars of the shear wall need to be tied on site and the precast formworks are only used as formworks.

[0008] (2) Technical Solutions

[0009] In order to achieve the above purpose, the main technical solutions adopted by the utility model include:

[0010] In a first aspect, the utility model provides an L-shaped shear wall formwork for modular buildings, including a first formwork and a second formwork arranged oppositely, and an internal steel bar group located between the first formwork and the second formwork for connecting adjacent two steel bar groups; the internal steel bar group includes a first steel bar mesh, a second steel bar mesh, a first truss and a second truss; both the first truss and the second truss extend along the height direction of the shear wall, and both the first truss and the second truss have opposite first ends and second ends in the direction from the first formwork to the second formwork;

[0011] The first end of the first truss is fixedly connected to the first steel bar mesh, and the first end of the first truss is embedded in the first formwork, so that the first steel bar mesh is laid flat on the first formwork to form a first precast component; the first end of the second truss is fixedly connected to the second steel bar mesh, and the first end of the second truss is embedded in the second formwork, so that the second steel bar mesh is laid flat on the second formwork to form a second precast component; the second end of the first truss is fixedly connected to the second steel bar mesh to connect the first precast component and the second precast component.

[0012] Optionally, the L-shaped shear wall formwork further includes a first steel bar group and a second steel bar group; both the first formwork and the second formwork are straight; the first steel bar group is fixedly arranged at the first end of the first formwork, the second steel bar group is fixedly arranged at the second end of the first formwork, and both ends of the first steel bar mesh are fixedly connected to the first steel bar group and the second steel bar group respectively to form a first precast component; both ends of the second steel bar mesh are fixedly connected to the first steel bar group and the second steel bar group respectively to connect the first precast component and the second precast component.

[0013] Optionally, the L-shaped shear wall formwork further includes a third formwork, a third steel bar group and wall-mounted longitudinal bars; the third formwork is straight, and the third steel bar group is fixedly arranged on the third formwork to form a third precast component; the first formwork includes a first end, a connecting part and a second end connected in sequence in the horizontal direction, the second formwork is arranged corresponding to the connecting part of the first formwork, the first end of the third formwork is fixedly connected to the second end of the first formwork to form an L shape, the stirrups of the third steel bar group extending out of the third formwork and the stirrups of the second steel bar group extending out of the first formwork are overlapped in a staggered manner to form an overlapping part, and the wall-mounted longitudinal bars extending along the height direction of the shear wall are inserted into the overlapping part. Both the second steel bar group and the third steel bar group are fixedly connected to the wall-mounted longitudinal bars to connect the third precast component and the first precast component.

[0014] Optionally, the first steel bar mesh includes multiple first horizontal bars extending in the horizontal direction, the first truss includes a first planar steel bar, a second planar steel bar, a first truss vertical bar, a second truss vertical bar and a third truss vertical bar extending along the height direction of the shear wall. Both the first planar steel bar and the second planar steel bar are formed into a triangular waveform by continuously bending a steel bar. Both the first planar steel bar and the second planar steel bar have opposite first ends and second ends in the direction from the first formwork to the second formwork.

[0015] The included angle between the first planar steel bar and the first steel bar mesh is a right angle, and the included angle between the second planar steel bar and the first steel bar mesh is an acute angle; the first end of the first planar steel bar is fixedly connected to the first end of the second planar steel bar through the first truss vertical bar, the second end of the first planar steel bar is fixedly connected to the first horizontal bar through the second truss vertical bar, the second end of the first planar steel bar is bent and inserted into the first formwork, the second end of the second planar steel bar is fixedly connected to the first horizontal bar through the third truss vertical bar, and the second end of the second planar steel bar is bent and inserted into the first formwork; the first truss vertical bar is fixedly connected to the second steel bar mesh to connect the first prefabricated component and the second prefabricated component.

[0016] Optionally, the second steel bar mesh includes multiple second horizontal bars extending in the horizontal direction and multiple structural vertical bars extending in the height direction of the shear wall. The second horizontal bars and the structural vertical bars are perpendicular to each other and fixedly connected to form the second steel bar mesh; the structural vertical bars are located between two adjacent first trusses; the first horizontal bar, the second horizontal bar, the first truss vertical bar, and the second truss vertical bar are all stress-bearing steel bars, and the third truss vertical bar and the structural vertical bar are structural steel bars.

[0017] Optionally, the L-shaped shear wall formwork further includes a mounting stud and a mounting nut. The second formwork is provided with a nut mounting groove and a through hole that are sequentially communicated from the outside to the inside; the mounting stud extends in the direction from the first formwork to the second formwork. The first end of the mounting stud is fixedly connected to the first planar steel bar, the second end of the mounting stud passes through the through hole and is located in the nut mounting groove, and the mounting nut is threadedly connected to the second end of the mounting stud and is accommodated in the nut mounting groove.

[0018] Optionally, a support steel plate is embedded at the position corresponding to the nut mounting groove in the second formwork. The support steel plate is located inside the nut mounting groove, and the through hole penetrates through the support steel plate.

[0019] Optionally, the second truss includes a third planar steel bar, a fourth planar steel bar, and a fourth truss vertical bar that extend in the height direction of the shear wall. Both the third planar steel bar and the fourth planar steel bar are formed into a triangular waveform by continuously bending a single steel bar. The third planar steel bar and the fourth planar steel bar both have opposite first ends and second ends in the direction from the first formwork to the second formwork; the included angle between the third planar steel bar and the second steel bar mesh is the same as the included angle between the fourth planar steel bar and the second steel bar mesh; the first end of the third planar steel bar is fixedly connected to the first end of the fourth planar steel bar through the fourth truss vertical bar, the second end of the third planar steel bar is bent and inserted into the second formwork, and the second end of the fourth planar steel bar is bent and inserted into the second formwork; the second truss is located between two adjacent first trusses.

[0020] Optionally, a first connecting steel plate is clamped on the inner surface of the second end of the first formwork shell, and a second connecting steel plate is clamped on the inner surface of the first end of the third formwork shell. The first connecting steel plate has a first connecting portion extending out of the first formwork shell, and the second connecting steel plate has a second connecting portion extending out of the third formwork shell. The first connecting portion abuts against the second connecting portion to form a welding position.

[0021] (III) Beneficial effects

[0022] The beneficial effects of the present utility model are as follows:

[0023] The L-shaped shear wall formwork for modular buildings provided by the present utility model divides the internal steel bar group into two parts, both of which are two-dimensional structures, facilitating the automatic binding or welding of steel bars during the production process of the internal steel bar group. Furthermore, the first part of the internal steel bar group is pre-buried in the first formwork shell to form a first prefabricated component, and the second part of the internal steel bar group is pre-buried in the second formwork shell to form a second prefabricated component. Only by connecting the first part and the second part of the internal steel bar group can the fixed connection of the first prefabricated component and the second prefabricated component be achieved, and this process can be realized through automatic binding or welding; greatly reducing the amount of steel bar binding and steel bar welding in on-site construction and significantly improving the production efficiency. In addition, through the first truss and the second truss, the first formwork shell and the second formwork shell can be effectively superimposed with the concrete poured in the shear wall formwork and jointly participate in the structural force, making the first formwork shell and the second formwork shell become part of the shear wall, that is, the first formwork shell and the second formwork shell also become load-bearing members, rather than just serving as temporary formwork, improving the material utilization rate, increasing the available indoor floor area, and significantly increasing the stiffness of the first formwork shell and the second formwork shell, reducing the cracks that may occur during the transportation and installation of the formwork shell. Description of the drawings

[0024] The present utility model is described with the aid of the following drawings:

[0025] Figure 1 It is a schematic structural diagram of the L-shaped shear wall formwork according to Embodiment 1 of the present utility model;

[0026] Figure 2 It is Figure 1 The enlarged schematic diagram at A in

[0027] Figure 3 It is a schematic structural diagram of the first prefabricated component according to Embodiment 1 of the present utility model;

[0028] Figure 4 It is a schematic structural diagram of the second prefabricated component according to Embodiment 1 of the present utility model;

[0029] Figure 5 It is a schematic structural diagram of the third prefabricated component according to Embodiment 1 of the present utility model.

[0030]

Description of the Attached Drawing Reference Numerals

[0031] 11: First formwork; 12: First truss; 13: First steel mesh; 14: First steel bar group; 15: Second steel bar group;

[0032] 111: Support steel plate; 112: First connecting steel plate; 113: Wire mesh;

[0033] 121: First planar steel bar; 122: Second planar steel bar; 123: First truss vertical bar; 124: Second truss vertical bar; 125: Third truss vertical bar;

[0034] 131: First horizontal bar;

[0035] 21: Second formwork; 22: Second truss; 23: Second steel mesh;

[0036] 231: Second horizontal bar; 232: Structural vertical bar;

[0037] 31: Third formwork; 32: Third steel bar group;

[0038] 311: Second connecting steel plate;

[0039] 41: Wall longitudinal bar for installation;

[0040] 51: Installation stud; 52: Installation nut;

[0041] 61: First structural column; 62: Second structural column. Detailed Implementation Manner

[0042] Example 1

[0043] As Figures 1 to 5 shown, this example provides an L-shaped shear wall formwork for modular buildings. The L-shaped shear wall formwork will be described in detail below.

[0044] As Figure 1 shown, the L-shaped shear wall formwork includes a relatively arranged first formwork 11 and a second formwork 21, and a steel reinforcement cage located between the first formwork 11 and the second formwork 21. The steel reinforcement cage includes a steel bar group and an internal steel bar group for connecting two adjacent steel bar groups. The steel bar group refers to a cage-like structure formed by processing steel bars used for constructing edge dark columns, edge end columns, and edge corner walls in a concrete structure.

[0045] Among them, the internal steel bar group includes a first steel bar mesh 13, a second steel bar mesh 23, a first truss 12 and a second truss 22; both the first truss 12 and the second truss 22 extend along the height direction of the shear wall, and both the first truss 12 and the second truss 22 have opposite first ends and second ends in the direction from the first formwork 11 to the second formwork 21; the first end of the first truss 12 is fixedly connected to the first steel bar mesh 13, and the first end of the first truss 12 is buried in the first formwork 11, so that the first steel bar mesh 13 is laid flat on the first formwork 11 to form a first prefabricated component; the first end of the second truss 22 is fixedly connected to the second steel bar mesh 23, and the first end of the second truss 22 is buried in the second formwork 21, so that the second steel bar mesh 23 is laid flat on the second formwork 21 to form a second prefabricated component; the second end of the first truss 12 is fixedly connected to the second steel bar mesh 23 to connect the first prefabricated component and the second prefabricated component.

[0046] In this way, the internal steel bar group is divided into two parts, both of which are two-dimensional structures, facilitating the automatic binding or welding of steel bars during the production process of the internal steel bar group; furthermore, the first part of the internal steel bar group is pre-buried in the first formwork 11 to form a first prefabricated component, and the second part of the internal steel bar group is pre-buried in the second formwork 21 to form a second prefabricated component. Only by connecting the first part and the second part of the internal steel bar group can the fixed connection of the first prefabricated component and the second prefabricated component be realized, and this process can be achieved through automatic binding or welding; greatly reducing the amount of steel bar binding and steel bar welding in on-site construction and significantly improving the production efficiency. In addition, through the first truss 12 and the second truss 22, the first formwork 11 and the second formwork 21 can be effectively superimposed with the concrete poured in the wall formwork and jointly participate in the structural force, making the first formwork 11 and the second formwork 21 become part of the shear wall, that is, the first formwork 11 and the second formwork 21 also become load-bearing members, rather than just being used as temporary formworks, improving the material utilization rate, increasing the available indoor floor area, and significantly increasing the stiffness of the first formwork 11 and the second formwork 21, reducing the cracks that may occur during the transportation and installation of the formwork.

[0047] It should be noted that the fixed connection between the steel bars involved in this embodiment is binding or welding.

[0048] Preferably, as Figure 3As shown, the L-shaped shear wall formwork further includes a first steel bar group 14 and a second steel bar group 15; both the first formwork shell 11 and the second formwork shell 21 are straight; the first steel bar group 14 is fixedly arranged at the first end of the first formwork shell 11, the second steel bar group 15 is fixedly arranged at the second end of the first formwork shell 11, and both ends of the first steel bar mesh 13 are fixedly connected to the first steel bar group 14 and the second steel bar group 15 respectively, forming a first prefabricated component; both ends of the second steel bar mesh 23 are fixedly connected to the first steel bar group 14 and the second steel bar group 15 respectively, connecting the first prefabricated component and the second prefabricated component.

[0049] Preferably, as Figure 1 and Figure 5 shown, the L-shaped shear wall formwork further includes a third formwork shell 31, a third steel bar group 32 and wall-installed longitudinal bars 4; the third formwork shell 31 is straight, the third steel bar group 32 is fixedly arranged on the third formwork shell 31, forming a third prefabricated component; the first formwork shell 11 includes a first end, a connecting part and a second end connected in sequence in the horizontal direction, the second formwork shell 21 is arranged corresponding to the connecting part of the first formwork shell 11, the first end of the third formwork shell 31 is fixedly connected to the second end of the first formwork shell 11 to form an L shape, the stirrups of the third steel bar group 32 extending out of the third formwork shell 31 and the stirrups of the second steel bar group 15 extending out of the first formwork shell 11 are staggered and overlapped to form an overlapping part, the wall-installed longitudinal bars 4 extending along the height direction of the shear wall are inserted into the overlapping part, and both the second steel bar group 15 and the third steel bar group 32 are fixedly connected to the wall-installed longitudinal bars 4, connecting the third prefabricated component and the first prefabricated component.

[0050] Preferably, the projection shape of the overlapping part on the horizontal plane is rectangular, four wall-installed longitudinal bars 4 are inserted into the overlapping part and are respectively located at the four corners of the overlapping part, and both the second steel bar group 15 and the third steel bar group 32 are fixedly connected to each wall-installed longitudinal bar 4.

[0051] It should be noted that the first steel bar group 14, the second steel bar group 15 and the third steel bar group 32 are all structures with stirrups added around the vertical bars. The first steel bar group 14 further has a first stirrup fixedly connected to the vertical bar, and the part of the first stirrup extending out of the stirrup is buried in the first formwork shell 11, so that the first steel bar group 14 is fixedly arranged on the first formwork shell 11; the second steel bar group 14 further has a second stirrup fixedly connected to the vertical bar, and the part of the second stirrup extending out of the stirrup is buried in the first formwork shell 11, so that the second steel bar group 15 is fixedly arranged on the first formwork shell 11; the third steel bar group 32 further has a third stirrup fixedly connected to the vertical bar, and the part of the third stirrup extending out of the stirrup is buried in the third formwork shell 31, so that the third steel bar group 32 is fixedly arranged on the third formwork shell 31.

[0052] Preferably, as Figure 3As shown in the figure, the first steel bar mesh 13 includes multiple first horizontal bars 131 extending in the horizontal direction. The first truss 12 includes a first planar steel bar 121, a second planar steel bar 122, a first truss vertical bar 123, a second truss vertical bar 124, and a third truss vertical bar 125 extending in the height direction of the shear wall. Both the first planar steel bar 121 and the second planar steel bar 122 are formed by continuously bending a single steel bar into a triangular waveform. The first planar steel bar 121 and the second planar steel bar 122 both have opposite first ends and second ends in the direction from the first formwork 11 to the second formwork 21. The included angle between the first planar steel bar 121 and the first steel bar mesh 13 is a right angle, and the included angle between the second planar steel bar 122 and the first steel bar mesh 13 is an acute angle. The first end of the first planar steel bar 121 is fixedly connected to the first end of the second planar steel bar 122 through the first truss vertical bar 123. The second end of the first planar steel bar 121 is fixedly connected to the first horizontal bar 131 through the second truss vertical bar 124. The second end of the first planar steel bar 121 is bent and inserted into the first formwork 11. The second end of the second planar steel bar 122 is fixedly connected to the first horizontal bar 131 through the third truss vertical bar 125. The second end of the second planar steel bar 122 is bent and inserted into the first formwork 11. The first truss vertical bar 123 is fixedly connected to the second steel bar mesh 23 to connect the first prefabricated component and the second prefabricated component.

[0053] Further preferably, the second steel bar mesh 23 includes multiple second horizontal bars 231 extending in the horizontal direction and multiple structural vertical bars 232 extending in the height direction of the shear wall. The second horizontal bars 231 and the structural vertical bars 232 are perpendicular to each other and fixedly connected to form the second steel bar mesh 23. The structural vertical bars 232 are located between two adjacent first trusses 12. The first horizontal bar 131, the second horizontal bar 231, the first truss vertical bar 123, and the second truss vertical bar 124 are all stress-bearing steel bars, and the third truss vertical bar 125 and the structural vertical bars 232 are structural steel bars. Further, the diameter of the stress-bearing steel bars is 10 - 16 mm, and the diameter of the structural steel bars is 6 - 8 mm. In this way, a double-layer and two-way (horizontal direction and shear wall height direction) stress-bearing steel bar cage is formed, which saves the amount of steel bars used and reduces costs while ensuring the structural stability of the steel bar cage.

[0054] Preferably, the L-shaped shear wall formwork further includes a mounting stud 51 and a mounting nut 52. The second formwork shell 21 is provided with a nut mounting groove and a through hole that communicate with each other from outside to inside in sequence. The mounting stud 51 extends in the direction from the first formwork shell 11 to the second formwork shell 21. The first end of the mounting stud 51 is fixedly connected to the first planar steel bar 121. The second end of the mounting stud 51 penetrates through the through hole and is located in the nut mounting groove. The mounting nut 52 is threadedly connected to the second end of the mounting stud 51, and the mounting nut 52 is received in the nut mounting groove. With such connection, a lateral stress is formed between the first formwork shell 11 and the second formwork shell 21 to prevent subsequent formwork shells from deforming and cracking.

[0055] Further preferably, a support steel plate 111 is embedded at a position corresponding to the nut mounting groove inside the second formwork shell 21. The support steel plate 111 is located inside the nut mounting groove, and the through hole penetrates through the support steel plate 111. In this way, the structural strength of the second formwork shell 21 is improved, and the connection between the mounting nut 52 and the mounting stud 51 is stabilized.

[0056] As Figure 1 and Figure 4 shown, the second truss 22 includes a third planar steel bar, a fourth planar steel bar, and a fourth truss vertical bar that extend along the height direction of the shear wall. Both the third planar steel bar and the fourth planar steel bar are formed into a triangular waveform by continuously bending a single steel bar. The third planar steel bar and the fourth planar steel bar both have opposite first ends and second ends in the direction from the first formwork shell 11 to the second formwork shell 21. The angles between the third planar steel bar and the second steel mesh 23, and between the fourth planar steel bar and the second steel mesh 23 are the same. The first end of the third planar steel bar is fixedly connected to the first end of the fourth planar steel bar through the fourth truss vertical bar. The second end of the third planar steel bar is bent and inserted into the second formwork shell 21. The second end of the fourth planar steel bar is bent and inserted into the second formwork shell 21. The second truss 22 is located between two adjacent first trusses 12.

[0057] Further, in this embodiment, there is a second truss 22 and a structural vertical bar 232 between two adjacent first trusses 12. The structural vertical bar 232 is located at the middle position between the first end and the second end of the second truss 22, and is also located at the middle position between the third planar steel bar and the fourth planar steel bar.

[0058] Preferably, as Figure 1 and Figure 2 shown, a first connecting steel plate 112 is clamped on the inner surface of the second end of the first formwork shell 11, and a second connecting steel plate 311 is clamped on the inner surface of the first end of the third formwork shell 31. The first connecting steel plate 112 has a first connecting portion that extends out of the first formwork shell 11, and the second connecting steel plate 311 has a second connecting portion that extends out of the third formwork shell 31. The first connecting portion abuts against the second connecting portion to form a welding position.

[0059] Preferably, as Figure 1 and Figure 4 shown, a wire mesh 113 is embedded in the first formwork 11 and / or the second formwork 21 and / or the third formwork 31. In this way, the strength of the first formwork 11, the second formwork 21 and the third formwork 31 is improved.

[0060] Preferably, the L-shaped shear wall formwork further includes a first structural column 61 and a second structural column 62. The first structural column 61 is connected to the first end of the first formwork 11, and the second structural column 62 is connected to the second end of the third formwork 31. In this way, through the first structural column 61 and the second structural column 62, the connection between the shear wall and the decorative wall is facilitated.

[0061] In this embodiment, the first steel mesh 13, the second steel mesh 23, the first truss 12, the second truss 22, the first steel bar group 14, the second steel bar group 15 and the third steel bar group 32 are all welded by an automatic welding machine.

[0062] Embodiment 2

[0063] Based on the L-shaped shear wall formwork provided in Embodiment 1, this embodiment provides a preparation method for an L-shaped shear wall formwork, including the following steps:

[0064] S1. Connect the first truss and the first steel mesh, connect the second truss and the second steel mesh, and pour concrete into the first mold table and the second mold table respectively.

[0065] S2. Before the concrete in the first mold table solidifies, press the first end of the first truss into the concrete, and after curing and demolding, form a first prefabricated component; before the concrete in the second mold table solidifies, press the first end of the second truss into the concrete, and after curing and demolding, form a second prefabricated component.

[0066] S3. Connect the second end of the first truss to the second steel mesh.

[0067] Further, S1 further includes: connecting the two ends of the first steel mesh to the first steel bar group and the second steel bar group respectively; S3 further includes: connecting the two ends of the second steel mesh to the first steel bar group and the second steel bar group respectively.

[0068] Further, S3 further includes: connecting the mounting nut to the second end of the mounting stud.

[0069] Further, S1 further includes: pouring concrete into the third mold table; S2 further includes: before the concrete in the third mold table solidifies, press one end of the third steel bar group into the concrete, and after curing and demolding, form a third prefabricated component; S3 further includes: connecting the first end of the third formwork to the second end of the first formwork.

[0070] Example 3

[0071] Based on the L-shaped shear wall formwork provided in Example 1, this embodiment provides a construction method for an L-shaped shear wall, including the following steps:

[0072] Insert four wall-installing longitudinal steel bars into the overlapping part and locate them at the four corners of the overlapping part respectively, and connect both the second steel bar group and the third steel bar group to each wall-installing longitudinal steel bar; cover the first formwork on the first structural column and the first formwork shell, and cover the second formwork on the first formwork shell and the second structural column to form an L-shaped closed cavity, pour concrete into the L-shaped closed cavity, and after curing and removing the first formwork and the second formwork, obtain the L-shaped shear wall.

[0073] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0074] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0076] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0077] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. An L-shaped shear wall formwork for modular buildings, characterized in that, It includes a first formwork (11) and a second formwork (21) which are oppositely arranged, and an internal steel bar group located between the first formwork (11) and the second formwork (21) for connecting adjacent two steel bar groups; The internal steel bar group includes a first steel bar mesh (13), a second steel bar mesh (23), a first truss (12) and a second truss (22); both the first truss (12) and the second truss (22) extend along the height direction of the shear wall, and both the first truss (12) and the second truss (22) have opposite first ends and second ends in the direction from the first formwork (11) to the second formwork (21); The first end of the first truss (12) is fixedly connected to the first steel bar mesh (13), and the first end of the first truss (12) is buried in the first formwork (11), so that the first steel bar mesh (13) is laid flat on the first formwork (11) to form a first prefabricated component; the first end of the second truss (22) is fixedly connected to the second steel bar mesh (23), and the first end of the second truss (22) is buried in the second formwork (21), so that the second steel bar mesh (23) is laid flat on the second formwork (21) to form a second prefabricated component; The second end of the first truss (12) is fixedly connected to the second steel bar mesh (23) to connect the first prefabricated component and the second prefabricated component.

2. The L-shaped shear wall formwork for modular buildings according to claim 1, characterized in that, It also includes a first steel bar group (14) and a second steel bar group (15); Both the first formwork (11) and the second formwork (21) are straight; The first steel bar group (14) is fixedly arranged at the first end of the first formwork (11), the second steel bar group (15) is fixedly arranged at the second end of the first formwork (11), and both ends of the first steel bar mesh (13) are fixedly connected to the first steel bar group (14) and the second steel bar group (15) respectively to form a first prefabricated component; Both ends of the second steel bar mesh (23) are fixedly connected to the first steel bar group (14) and the second steel bar group (15) respectively to connect the first prefabricated component and the second prefabricated component.

3. The L-shaped shear wall formwork for modular buildings according to claim 2, characterized in that, It also includes a third formwork (31), a third steel bar group (32) and wall longitudinal steel bars (41); the third formwork (31) is straight, and the third steel bar group (32) is fixedly arranged on the third formwork (31) to form a third prefabricated component; The first formwork (11) includes a first end, a connecting part and a second end which are sequentially connected in the horizontal direction, the second formwork (21) is arranged corresponding to the connecting part of the first formwork (11), the first end of the third formwork (31) is fixedly connected to the second end of the first formwork (11) to form an L shape, the stirrups of the third steel bar group (32) extending out of the third formwork (31) and the stirrups of the second steel bar group (15) extending out of the first formwork (11) are overlapped in a staggered manner to form an overlapping part, the wall longitudinal steel bars (41) extending along the height direction of the shear wall are inserted into the overlapping part, and both the second steel bar group (15) and the third steel bar group (32) are fixedly connected to the wall longitudinal steel bars (41) to connect the third prefabricated component and the first prefabricated component.

4. The L-shaped shear wall formwork for modular buildings according to claim 1, characterized in that, The first steel bar mesh (13) includes a plurality of first horizontal bars (131) extending in the horizontal direction. The first truss (12) includes a first planar steel bar (121), a second planar steel bar (122), a first truss vertical bar (123), a second truss vertical bar (124), and a third truss vertical bar (125) extending in the height direction of the shear wall. Both the first planar steel bar (121) and the second planar steel bar (122) are formed by continuously bending a single steel bar into a triangular waveform. The first planar steel bar (121) and the second planar steel bar (122) each have a relative first end and a second end in the direction from the first formwork (11) to the second formwork (21). The included angle between the first planar steel bar (121) and the first steel bar mesh (13) is a right angle, and the included angle between the second planar steel bar (122) and the first steel bar mesh (13) is an acute angle. The first end of the first planar steel bar (121) is fixedly connected to the first end of the second planar steel bar (122) through the first truss vertical bar (123). The second end of the first planar steel bar (121) is fixedly connected to the first horizontal bar (131) through the second truss vertical bar (124). The second end of the first planar steel bar (121) is bent and inserted into the first formwork (11). The second end of the second planar steel bar (122) is fixedly connected to the first horizontal bar (131) through the third truss vertical bar (125). The second end of the second planar steel bar (122) is bent and inserted into the first formwork (11). The first truss vertical bar (123) is fixedly connected to the second steel bar mesh (23) to connect the first prefabricated component and the second prefabricated component.

5. The L-shaped shear wall formwork for modular buildings according to claim 4, characterized in that The second steel bar mesh (23) includes a plurality of second horizontal bars (231) extending in the horizontal direction and a plurality of structural vertical bars (232) extending in the height direction of the shear wall. The second horizontal bars (231) and the structural vertical bars (232) are perpendicular to each other and fixedly connected to form the second steel bar mesh (23). The structural vertical bars (232) are located between two adjacent first trusses (12). The first horizontal bar (131), the second horizontal bar (231), the first truss vertical bar (123), and the second truss vertical bar (124) are all stress-bearing steel bars, and the third truss vertical bar (125) and the structural vertical bar (232) are structural steel bars.

6. The L-shaped shear wall formwork for modular buildings according to claim 4, characterized in that, It further includes a mounting stud (51) and a mounting nut (52). The second formwork (21) is provided with a nut mounting groove and a through hole that are sequentially communicated from the outside to the inside. The mounting stud (51) extends in the direction from the first formwork (11) to the second formwork (21). The first end of the mounting stud (51) is fixedly connected to the first planar steel bar (121). The second end of the mounting stud (51) passes through the through hole and is located in the nut mounting groove. The mounting nut (52) is threadedly connected to the second end of the mounting stud (51), and the mounting nut (52) is accommodated in the nut mounting groove.

7. The L-shaped shear wall formwork for modular buildings according to claim 6, characterized in that, A support steel plate (111) is embedded at a position corresponding to the nut mounting groove in the second formwork (21). The support steel plate (111) is located inside the nut mounting groove, and the through hole penetrates through the support steel plate (111).

8. The L-shaped shear wall formwork for modular buildings according to claim 1, characterized in that The second truss (22) includes a third planar steel bar, a fourth planar steel bar, and a fourth truss vertical bar extending along the height direction of the shear wall. Both the third planar steel bar and the fourth planar steel bar are formed into a triangular waveform by continuously bending a single steel bar. The third planar steel bar and the fourth planar steel bar both have opposite first ends and second ends in the direction from the first formwork (11) to the second formwork (21); The angles between the third planar steel bar and the second steel mesh (23), and between the fourth planar steel bar and the second steel mesh (23) are the same; the first end of the third planar steel bar is fixedly connected to the first end of the fourth planar steel bar through the fourth truss vertical bar. The second end of the third planar steel bar is bent and inserted into the second formwork (21), and the second end of the fourth planar steel bar is bent and inserted into the second formwork (21); The second truss (22) is located between two adjacent first trusses (12).

9. The L-shaped shear wall formwork for modular buildings according to claim 3, characterized in that A first connecting steel plate (112) is clamped on the inner surface of the second end of the first formwork (11), and a second connecting steel plate (311) is clamped on the inner surface of the first end of the third formwork (31). The first connecting steel plate (112) has a first connecting portion extending out of the first formwork (11), and the second connecting steel plate (311) has a second connecting portion extending out of the third formwork (31). The first connecting portion and the second connecting portion are abutted to form a welding position.

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