L-shaped shear wall formwork for modular building

Abstract

The utility model provides an L-shaped shear wall formwork for a modular building, which comprises a first formwork shell and a second formwork shell which are L-shaped and are oppositely arranged, and a first reinforcing steel bar group, a second reinforcing steel bar group and an internal reinforcing steel bar group are accommodated in an L-shaped accommodating cavity formed between the first formwork shell and the second formwork shell; 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 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 first reinforcing mesh is connected with the second reinforcing mesh through the first reinforcing steel bar group and the second reinforcing steel bar group. The technical problems that a large number of steel bars of a shear wall need to be bound on site, and a prefabricated 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, and in particular to an L-shaped shear wall formwork for modular buildings. Background Art

[0002] The precast shear wall is 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 the traditional cast-in-place concrete shear wall, the precast shear wall has the advantages of short manufacturing cycle, controllable quality, fast construction speed, energy conservation and environmental protection.

[0003] The existing precast 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 formwork is only used as a formwork and does not participate in the structural stress of the shear wall, wasting materials and making the shear wall thicker, occupying the available indoor area.

[0004] The precast shear wall for concrete modular buildings includes an L-shaped shear wall, which is 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 reason, 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 formwork is only used as a formwork.

[0008] (2) Technical Solutions

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

[0010] The utility model provides an L-shaped shear wall formwork for modular buildings, which includes a first formwork and a second formwork that are both L-shaped and arranged oppositely. An L-shaped cavity is formed between the first formwork and the second formwork, and a first steel bar group, a second steel bar group and an internal steel bar group are accommodated in the L-shaped cavity;

[0011] The internal steel bar group includes a first steel bar mesh, a second steel bar mesh, and a first truss and a second truss extending along the height direction of the shear wall; 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 prefabricated 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 prefabricated component; both ends of the first steel bar mesh are fixedly connected to the first steel bar group and the second steel bar group respectively, and both ends of the second steel bar mesh are fixedly connected to the first steel bar group and the second steel bar group respectively, connecting the first prefabricated component and the second prefabricated component.

[0012] Optionally, the first formwork has a first straight portion and a second straight portion connected in sequence to form an L shape. The first steel bar group is fixedly arranged at the first end of the first straight portion, and the second steel bar group is fixedly arranged at the second end of the first straight portion. 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 prefabricated 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, connecting the first prefabricated component and the second prefabricated component.

[0013] Optionally, the L-shaped shear wall formwork for modular buildings further includes a third steel bar group and wall-installing longitudinal bars; the third steel bar group is fixedly arranged on the second straight portion. The stirrups of the third steel bar group extending out of the second straight portion 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 portion. The wall-installing longitudinal bars extending along the height direction of the shear wall are inserted into the overlapping portion, and both the second steel bar group and the third steel bar group are fixedly connected to the wall-installing longitudinal bars.

[0014] Optionally, the first steel bar mesh includes multiple first horizontal bars extending along the horizontal direction. The first truss includes a first planar steel bar, a second planar steel bar, and a first 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; the included angles between the first planar steel bar and the first steel bar mesh and between the second planar steel bar and the first steel bar mesh are the same;

[0015] 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, and the end of 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, and the end of the second end of the second planar steel bar is bent and inserted into the first formwork.

[0016] Optionally, the L-shaped shear wall formwork for modular buildings further includes installation bolts and installation nuts. An installation groove and a through hole that are sequentially communicated from the outside to the inside are formed in the second formwork shell; the installation nut extends in the direction from the first formwork shell to the second formwork shell, the first end of the installation nut is fixedly connected to the first truss vertical bar, and the second end of the installation nut corresponds to the position of the through hole; the screw rod of the installation bolt passes through the through hole and is threadedly connected to the second end of the installation nut, and the head of the installation bolt is received in the installation groove.

[0017] Optionally, a convex portion protruding toward the first formwork shell is provided on the inner surface of the second formwork shell corresponding to the position of the installation groove. The convex portion is located inside the nut installation groove, and the through hole penetrates through the convex portion.

[0018] Optionally, the second truss includes a third planar steel bar, a fourth planar steel bar, and a second 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 triangular waveforms by continuously bending a 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 to the second formwork shell; the included angles between the third planar steel bar and the second steel mesh sheet, and between the fourth planar steel bar and the second steel mesh sheet 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 second truss vertical bar. The second end of the third planar steel bar is bent and inserted into the second formwork shell, and the second end of the fourth planar steel bar is bent and inserted into the second formwork shell; the second truss is located between two adjacent first trusses.

[0019] Optionally, the first steel mesh sheet includes multiple first horizontal bars extending in the horizontal direction and multiple first vertical bars arranged perpendicular to the first horizontal bars; the second steel mesh sheet includes multiple second horizontal bars extending in the horizontal direction and multiple second vertical bars arranged perpendicular to the second horizontal bars; the first vertical bars and the second vertical bars are arranged in one-to-one correspondence, and both the first vertical bars and the second vertical bars are stress-bearing steel bars.

[0020] Optionally, one first vertical bar and one second vertical bar are arranged at the middle position between adjacent first trusses and second trusses.

[0021] Optionally, the second horizontal bar is embedded in the convex portion.

[0022] (III) Beneficial effects

[0023] The beneficial effects of the present utility model are:

[0024] The L-shaped shear wall formwork provided by the present invention uses an L-shaped first formwork and a second formwork, which simplifies the construction process of the L-shaped shear wall; the internal structure is divided into two parts, both of which are two-dimensional structures, facilitating the automatic binding or welding of steel bars during the production of the internal structure; furthermore, the first part of the internal structure is pre-buried in the first formwork to form a first prefabricated component, and the second part of the internal structure is pre-buried in the second formwork to form a second prefabricated component. Only by using the first steel bar group and the second steel bar group to connect the first part and the second part of the internal structure can the shaped 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 and the second formwork can be effectively superimposed with the concrete poured in the formwork and jointly participate in the structural force, making the first formwork and the second formwork become part of the shear wall, that is, the first formwork and the second formwork 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 improving the stiffness of the first formwork and the second formwork, reducing the cracks that may occur during the transportation and installation of the formwork. Description of the Drawings

[0025] The present utility model is described with the aid of the following drawings:

[0026] Figure 1 It is a structural schematic diagram of the L-shaped shear wall formwork according to Embodiment 1 of the present utility model;

[0027] Figure 2 It is a structural schematic diagram of the first prefabricated component according to Embodiment 1 of the present utility model;

[0028] Figure 3 It is an exploded schematic diagram of the first prefabricated component according to Embodiment 1 of the present utility model;

[0029] Figure 4 It is a structural schematic diagram of the second prefabricated component according to Embodiment 1 of the present utility model;

[0030] Figure 5 It is an exploded schematic diagram of the second prefabricated component according to Embodiment 1 of the present utility model.

[0031]

Description of the Reference Numerals

[0032] 11: First formwork; 12: First truss; 13: First steel bar mesh; 14: First steel bar group; 15: Second steel bar group;

[0033] 111: Protruding part;

[0034] 121: First planar steel bar; 122: Second planar steel bar; 123: First truss vertical bar;

[0035] 131: First horizontal bar; 132: First vertical bar;

[0036] 141: Stirrup; 142: Tie bar;

[0037] 21: Second formwork; 22: Second truss; 23: Second steel bar mesh;

[0038] 231: Second horizontal bar; 232: Second vertical bar;

[0039] 32: Third steel bar group;

[0040] 41: Wall longitudinal bar for installation;

[0041] 51: Installation bolt; 52: Installation nut;

[0042] 61: First structural column; 62: Second structural column. Detailed implementation mode

[0043] Example 1

[0044] 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.

[0045] As Figure 1 shown, the L-shaped shear wall formwork includes a first formwork 11 and a second formwork 21 both in an L shape. The first formwork 11 and the second formwork 21 are arranged oppositely, and an L-shaped cavity is formed between the first formwork 11 and the second formwork 21. An inner steel bar cage is accommodated in the L-shaped cavity. The inner steel bar 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 concealed columns at the edges, end columns at the edges, and corner walls at the edges in a concrete structure.

[0046] 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. 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, so that the second steel bar mesh 23 is laid flat on the second formwork 21 to form a second prefabricated component.

[0047] The steel bar group includes a first steel bar group 14 and a second steel bar group 15. The two ends of the first steel bar mesh 13 are respectively fixedly connected to the first steel bar group 14 and the second steel bar group 15, and the two ends of the second steel bar mesh 23 are respectively fixedly connected to the first steel bar group 14 and the second steel bar group 15, so as to connect the first prefabricated component and the second prefabricated component.

[0048] In this way, the internal structure 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 structure. Furthermore, the first part of the internal structure is pre-buried in the first formwork 11 to form the first prefabricated component, and the second part of the internal structure is pre-buried in the second formwork 21 to form the second prefabricated component. Only by using the first steel bar group 14 and the second steel bar group 15 to connect the first part and the second part of the internal structure can the fixed connection between 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 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 serving 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 formworks.

[0049] It should be noted that the fixed connection between the steel bars involved in this embodiment is binding or welding.

[0050] Preferably, as Figure 2 and Figure 3 shown, the first formwork 11 has a first flat part and a second flat part. The first flat part and the second flat part are connected to form an L shape. The first steel bar group 14 is fixedly arranged at the first end of the first flat part, the second steel bar group 15 is fixedly arranged at the second end of the first flat part, and the two ends of the first steel bar mesh 13 are respectively fixedly connected to the first steel bar group 14 and the second steel bar group 15 to form the first prefabricated component; the two ends of the second steel bar mesh 23 are respectively fixedly connected to the first steel bar group 14 and the second steel bar group 15 to connect the first prefabricated component and the second prefabricated component.

[0051] Preferably, as Figure 2 and Figure 4As shown in the figure, the L-shaped shear wall formwork further includes a third steel bar group 32 and wall longitudinal bars 4; the third steel bar group 32 is fixedly arranged on the second straight part, and the stirrups of the third steel bar group 32 extending out of the second straight part 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 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 longitudinal bars 4.

[0052] Preferably, the projection shape of the overlapping part on the horizontal plane is rectangular. Four wall longitudinal bars 4 are inserted into the overlapping part and are respectively located at the four corners of the overlapping part. Both the second steel bar group 15 and the third steel bar group 32 are fixedly connected to each wall longitudinal bar 4.

[0053] 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 141 added around the vertical bars; the first steel bar group 14 also has a first tie bar 142 fixedly connected to the vertical bar. The part of the first tie bar extending out of the stirrup is buried in the first formwork 11, so that the first steel bar group 14 is fixedly arranged on the first formwork 11; the second steel bar group 14 also has a second tie bar fixedly connected to the vertical bar. The part of the second tie bar extending out of the stirrup is buried in the first formwork 11, so that the second steel bar group 15 is fixedly arranged on the first formwork 11; the third steel bar group 32 also has a third tie bar fixedly connected to the vertical bar. The part of the third tie bar extending out of the stirrup is buried in the first formwork 11, so that the third steel bar group 32 is fixedly arranged on the first formwork 11.

[0054] Preferably, as Figure 2 and Figure 3 shown in the figure, the first steel bar mesh 13 includes a plurality of first horizontal bars 131 extending along the horizontal direction. The first truss 12 includes a first planar steel bar 121, a second planar steel bar 122 and a first truss vertical bar 123 extending along 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 steel bar into a triangular waveform. Both the first planar steel bar 121 and the second planar steel bar 122 have opposite first ends and second ends in the direction from the first formwork 11 to the second formwork 21; the included angles between the first planar steel bar 121 and the first steel bar mesh 13 and between the second planar steel bar 122 and the first steel bar mesh 13 are the same; 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, and the end of 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, and the end of the second end of the second planar steel bar 122 is bent and inserted into the first formwork 11.

[0055] Preferably, the L-shaped shear wall formwork further includes a mounting bolt 51 and a mounting nut 52. The second formwork shell 21 is provided with a mounting groove and a through hole that are sequentially communicated from the outside to the inside; the mounting nut 52 extends in the direction from the first formwork shell 11 to the second formwork shell 21. The first end of the mounting nut 52 is fixedly connected to the first truss vertical bar 123, and the second end of the mounting nut 52 corresponds to the position of the through hole; the screw rod of the mounting bolt 51 passes through the through hole and is threadedly connected to the second end of the mounting nut 52, and the head of the mounting bolt 51 is received in the mounting groove. With such a 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 or cracking.

[0056] Further preferably, a convex portion 111 protruding toward the first formwork shell 11 is provided on the inner surface of the second formwork shell 21 corresponding to the position of the mounting groove. The convex portion 111 is located inside the nut mounting groove, and the through hole penetrates through the convex portion 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 bolt 51 is stabilized.

[0057] As Figure 4 and Figure 5 shown, the second truss 22 includes a third planar steel bar, a fourth planar steel bar, and a second 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 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 included angle between the third planar steel bar and the second steel mesh 23 is the same as the included angle between the fourth planar steel bar and the second steel mesh 23; the first end of the third planar steel bar is fixedly connected to the first end of the fourth planar steel bar through the second truss vertical bar. The second end of the third planar steel bar is bent and inserted into the second formwork shell 21, and 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.

[0058] Preferably, the first steel mesh 13 includes a plurality of first horizontal bars 131 extending in the horizontal direction and a plurality of first vertical bars 132 extending along the height direction of the shear wall. The first horizontal bars 131 and the first vertical bars 232 are perpendicular to each other and fixedly connected to form the first steel mesh 23; the second steel mesh 23 includes a plurality of second horizontal bars 231 extending in the horizontal direction and a plurality of second vertical bars 232 extending along the height direction of the shear wall. The second horizontal bars 231 and the second vertical bars 232 are perpendicular to each other and fixedly connected to form the second steel mesh 23; the first vertical bars 132 and the second vertical bars 232 are arranged in one-to-one correspondence, and both the first vertical bars 132 and the second vertical bars 232 are stress-bearing steel bars. In this way, a double-layer and double-direction (horizontal direction and shear wall height direction) stress-bearing steel bar cage is formed.

[0059] Further preferably, both the first truss vertical bars 123 and the second truss vertical bars are structural bars. Specifically, the diameter of the stress-bearing bars is 10 - 16 mm, and the diameter of the structural bars is 6 - 8 mm. In this way, while ensuring the structural stability of the reinforcement cage, the consumption of steel bars is saved and the cost is reduced.

[0060] Further preferably, in this embodiment, a first vertical bar 132 and a second vertical bar 232 are arranged at the middle position between adjacent first trusses 12 and second trusses 22.

[0061] Further preferably, the second horizontal bar 231 is embedded in the convex part 111.

[0062] 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 straight part, and the second structural column 62 is connected to the end of the second straight part far from the second steel bar group. 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.

[0063] In this embodiment, the first steel bar mesh 13, the second steel bar 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.

[0064] Embodiment 2

[0065] 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:

[0066] S1. Connect the first truss and the first steel bar mesh, connect the second truss and the second steel bar mesh, and pour concrete into the first formwork table and the second formwork table respectively.

[0067] S2. Before the concrete in the first formwork table solidifies, press the first end of the first truss into the concrete, and after curing and demolding, form a first precast component; before the concrete in the second formwork table solidifies, press the first end of the second truss into the concrete, and after curing and demolding, form a second precast component.

[0068] S3. Connect the first steel bar mesh and the second steel bar mesh through the first steel bar group and the second steel bar group.

[0069] Further, S1 further includes: connecting the two ends of the first steel mesh sheet to the first steel bar group and the second steel bar group respectively; S2 further includes: before the concrete in the third formwork platform solidifies, pressing the tie bars of the third steel bar group into the concrete; in S3, connecting the first steel mesh sheet and the second steel mesh sheet through the first steel bar group and the second steel bar group as: connecting the two ends of the second steel mesh sheet to the first steel bar group and the second steel bar group respectively.

[0070] Further, S3 further includes: connecting the mounting nut and the mounting bolt.

[0071] Embodiment 3

[0072] Based on the L-shaped shear wall formwork provided in Embodiment 1, this embodiment provides a construction method for an L-shaped shear wall, including the following steps:

[0073] Insert four wall-installing longitudinal bars into the overlapping part and be respectively located at the four corners of the overlapping part, and connect both the second steel bar group and the third steel bar group to each wall-installing longitudinal bar; pour concrete into the L-shaped closed cavity, and after curing, removing the first formwork and the second formwork, an L-shaped shear wall is obtained.

[0074] 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 understood 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.

[0075] In the present invention, unless otherwise clearly specified 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 integrated; 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 situations.

[0076] In the present utility model, unless otherwise clearly defined and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0077] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. means 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 may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] 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 form for modular building, characterized in that: It comprises a first formwork (11) and a second formwork (21) both of which are L-shaped and arranged opposite to each other, an L-shaped cavity is formed between the first formwork (11) and the second formwork (21), and a first steel bar group (14), a second steel bar group (15) and an internal steel bar group are accommodated in the L-shaped cavity; The internal steel bar group comprises a first steel bar mesh (13), a second steel bar mesh (23), and a first truss (12) and a second truss (22) extending in the height direction of the shear wall; 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 embedded 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 embedded 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 two ends of the first steel mesh (13) are respectively fixedly connected to the first steel bar group (14) and the second steel bar group (15), and the two ends of the second steel mesh (23) are respectively fixedly connected to the first steel bar group (14) and the second steel bar group (15), so as to connect the first prefabricated component and the second prefabricated component.

2. The L-shaped shear wall formwork for modular construction according to claim 1, characterized in that: The first mold shell (11) has a first straight portion and a second straight portion connected in sequence to form an L-shape, a first steel bar group (14) is fixedly arranged at a first end of the first straight portion, a second steel bar group (15) is fixedly arranged at a second end of the first straight portion, and two ends of the first steel bar mesh (13) are respectively fixedly connected to the first steel bar group (14) and the second steel bar group (15) to form a first prefabricated component; The two ends of the second steel mesh (23) are respectively fixedly connected to the first steel bar group (14) and the second steel bar group (15), so as to connect the first prefabricated component with the second prefabricated component.

3. The L-shaped shear wall formwork for modular construction according to claim 2, characterized in that: It also includes a third steel bar group (32) and wall longitudinal bars (4); The third steel bar group (32) is fixedly arranged on the second straight portion, and the stirrups of the third steel bar group (32) extending from the second straight portion and the stirrups of the second steel bar group (15) extending from the first formwork (11) are overlapped and staggered to form an overlapped portion, and the wall longitudinal reinforcement (4) extending in the height direction of the shear wall is inserted into the overlapped portion, and the second steel bar group (15) and the third steel bar group (32) are both fixedly connected to the wall longitudinal reinforcement (4).

4. The L-shaped shear wall form for modular construction according to claim 1, characterized in that: The first steel mesh (13) comprises a plurality of first horizontal bars (131) extending in a horizontal direction, the first truss (12) comprises a first plane steel bar (121), a second plane steel bar (122) and a first truss vertical bar (123) extending in a height direction of the shear wall, the first plane steel bar (121) and the second plane steel bar (122) are both formed by continuously bending a steel bar to form a triangular waveform, the first plane steel bar (121) and the second plane steel bar (122) both have a first end and a second end opposite to each other in a direction from the first formwork (11) to the second formwork (21); the angle between the first plane steel bar (121) and the first steel mesh (13) is consistent with the angle between the second plane steel bar (122) and the first steel mesh (13); The first end of the first planar steel bar (121) is fixedly connected to the first end of the second planar steel bar (122) via 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), and the second end of the first planar steel bar (121) is inserted into the first formwork (11) in a bent shape, the second end of the second planar steel bar (122) is fixedly connected to the first horizontal bar (131), and the second end of the second planar steel bar (122) is inserted into the first formwork (11) in a bent shape.

5. The L-shaped shear wall form for modular construction according to claim 4, characterized in that: It also includes a mounting bolt (51) and a mounting nut (52), and the second mold shell (21) is provided with a mounting groove and a through hole which are connected in sequence from the outside to the inside; The mounting nut (52) extends in a direction from the first mold shell (11) to the second mold shell (21), the first end of the mounting nut (52) is fixedly connected to the first truss vertical rib (123), and the second end of the mounting nut (52) corresponds to the position of the through hole; the screw rod of the mounting bolt (51) passes through the through hole and is threadedly connected to the second end of the mounting nut (52), and the head of the mounting bolt (51) is accommodated in the mounting groove.

6. The L-shaped shear wall form for modular construction according to claim 5, characterized in that: A protrusion (111) protruding toward the first mold shell (11) is provided on the inner surface of the second mold shell (21) at a position corresponding to the installation groove, the protrusion (111) is located on the inner side of the nut installation groove, and a through hole is provided through the protrusion (111).

7. The L-shaped shear wall form for modular construction according to claim 4, characterized in that: The second truss (22) comprises a third plane steel bar, a fourth plane steel bar and a second truss vertical bar extending in the height direction of the shear wall, the third plane steel bar and the fourth plane steel bar are both formed by continuously bending a steel bar to form a triangular waveform, and the third plane steel bar and the fourth plane steel bar both have opposite first and second ends in the direction from the first formwork (11) to the second formwork (21); The angle between the third plane steel bar and the second steel mesh (23) is consistent with the angle between the fourth plane steel bar and the second steel mesh (23); the first end of the third plane steel bar is fixedly connected to the first end of the fourth plane steel bar through the second truss vertical bar, the second end of the third plane steel bar is bent and inserted into the second formwork (21), and the second end of the fourth plane steel bar is bent and inserted into the second formwork (21); the second truss (22) is located between two adjacent first trusses (12).

8. The L-shaped shear wall form for modular construction according to any one of claims 1 to 7, characterized in that: The first steel mesh sheet (13) comprises a plurality of first horizontal ribs (131) extending in a horizontal direction and a plurality of first vertical ribs (132) arranged perpendicularly to the first horizontal ribs (131); the second steel mesh sheet (23) comprises a plurality of second horizontal ribs (231) extending in a horizontal direction and a plurality of second vertical ribs (232) arranged perpendicularly to the second horizontal ribs (231); The first vertical reinforcement (132) and the second vertical reinforcement (232) are arranged in a one-to-one correspondence, and both the first vertical reinforcement (132) and the second vertical reinforcement (232) are stress-bearing reinforcements.

9. The L-shaped shear wall form for modular construction according to claim 8, characterized in that: A first vertical rib (132) and a second vertical rib (232) are arranged at a middle position between adjacent first trusses (12) and second trusses (22).

10. The L-shaped shear wall form for modular construction according to claim 8, characterized in that: The second horizontal rib (231) is embedded in the raised portion (111).

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