A concrete box module and a method of producing the same

Abstract

The application provides a concrete box module and a production method thereof, wherein the box module comprises a first prefabricated wall body, a first post-cast wall body, a second prefabricated wall body and a second post-cast wall body which are sequentially connected, the first prefabricated wall body and the second prefabricated wall body are oppositely arranged, and the first post-cast wall body and the second post-cast wall body are oppositely arranged; the first prefabricated wall body and the second prefabricated wall body each comprise a partition wall and a shear wall formwork which are sequentially connected, one side of the shear wall formwork facing the inside of the module serves as an inner surface of the module, one side of the shear wall formwork facing away from the inside of the module is paved with a steel mesh sheet used for connecting two adjacent edge steel bar groups, the steel mesh sheet is fixedly connected with a truss extending along the height direction of the shear wall at a position corresponding to the two adjacent edge steel bar groups, a first end of the truss is inserted into the shear wall formwork to fix the steel mesh sheet on the shear wall formwork, and a second end of the truss is arranged towards the outside of the module. The problems that the shear wall steel bars need to be bound on site in a large amount and the shear wall formwork does not participate in force bearing are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modular building, in particular to a concrete box module and a production method thereof. BACKGROUND

[0002] Traditional cast-in-situ concrete structure building requires a large number of formworks to be assembled and disassembled during on-site construction, which consumes a large amount of manpower and material resources and increases the construction period. Concrete modular building technology has been widely used worldwide due to its advantages of fast construction speed and high construction quality.

[0003] Concrete modular building refers to a concrete structure building formed by standard prefabricated concrete box modules with functional use, which are fabricated in a factory and connected on site. The concrete box module uses a prefabricated shear wall formwork as a formwork for pouring shear walls with on-site concrete, and a prefabricated beam formwork as a formwork for pouring beams with on-site concrete, greatly reducing the time for on-site formwork and interior decoration, and achieving fast construction speed and high construction quality.

[0004] However, in the current concrete box module, the shear wall formwork and the beam formwork do not participate in the force and are only used as formworks. During the construction process of pouring concrete, the thickness of the shear wall formwork and the beam formwork is not included in the specified concrete thickness, resulting in thicker walls that occupy indoor usable area and waste materials. Meanwhile, during the construction process, the steel bars of the shear wall and the beam need to be tied on site, which consumes a lot of time and limits production efficiency.

[0005] Furthermore, in the current production process of concrete box modules, a mold completely matching the module is often designed according to the size and shape of the module. The mold structure and shape are relatively complex, and a set of mold can only be used for one project, making it difficult to achieve common molding. Therefore, the mold utilization rate in the production process of concrete box modules is usually low, and the cost is high.

[0006] Therefore, there is an urgent need for an improved concrete box module and a production method thereof. SUMMARY

[0007] (I) Technical problems to be solved

[0008] In view of the above technical problems, the present application at least solves them to some extent. To this end, the present application provides a concrete box module and a production method thereof.

[0009] (II) Technical solutions

[0010] In order to achieve the above purpose, the main technical solutions adopted by the present application include:

[0011] In a first aspect, the present application provides a concrete box module, comprising a module bottom plate, a module top plate, a beam formwork, and a first prefabricated wall, a first post-cast wall, a second prefabricated wall and a second post-cast wall connected in sequence around the edge of the module top plate, the first prefabricated wall and the second prefabricated wall are oppositely arranged, and the first post-cast wall and the second post-cast wall are oppositely arranged;

[0012] The first prefabricated wall and the second prefabricated wall each comprise a partition wall and a shear wall formwork connected in sequence, one side of the shear wall formwork facing the interior of the module serves as an inner surface of the module, and the other side of the shear wall formwork away from the interior of the module is paved with a steel mesh for connecting two adjacent edge steel bar groups, the steel mesh is fixedly connected with a truss extending along the height direction of the shear wall at a position corresponding to the space between the two adjacent edge steel bar groups, the first end of the truss is inserted into the shear wall formwork to fix the steel mesh on the shear wall formwork, and the second end of the truss is arranged towards the exterior of the module.

[0013] The top of the shear wall formwork is connected with the edge of the module top plate, the top of the partition wall is connected with the edge of the module top plate through the beam formwork, the top of the first post-cast wall is connected with the edge of the module top plate, and the bottom of the second post-cast wall is connected with the edge of the module top plate; the top of the shear wall formwork is connected with the edge of the module bottom plate, the bottom of the partition wall is connected with the edge of the module bottom plate, the bottom of the first post-cast wall is connected with the edge of the module bottom plate, and the bottom of the second post-cast wall is connected with the edge of the module bottom plate; the thickness of the beam formwork is within 30 mm, and the thickness of the shear wall formwork is within 30 mm.

[0014] Optionally, when the first prefabricated wall is used as the outer wall of the module, the first prefabricated wall comprises an L-shaped shear wall first formwork and an L-shaped shear wall second formwork oppositely arranged with the L-shaped shear wall first formwork, the L-shaped shear wall first formwork and the L-shaped shear wall second formwork are both connected with the partition wall, one side of the L-shaped shear wall first formwork facing the interior of the module serves as an inner surface of the module, and the other side of the L-shaped shear wall second formwork away from the interior of the module serves as an outer surface of the module.

[0015] The first side of the L-shaped shear wall first formwork away from the inside of the module is paved with a first steel mesh sheet for connecting two adjacent edge steel reinforcement groups, the first steel mesh sheet is fixedly connected with a first truss extending in the height direction of the shear wall at a position corresponding to the position between the two adjacent edge steel reinforcement groups, the first truss is in the shape of a steel mesh sheet, the first end of the first truss is inserted into the L-shaped shear wall first formwork to fix the first steel mesh sheet on the L-shaped shear wall first formwork, and the second end of the first truss is arranged towards the L-shaped shear wall second formwork; the first side of the L-shaped shear wall second formwork away from the inside of the module is paved with a second steel mesh sheet for connecting two adjacent edge steel reinforcement groups, the second steel mesh sheet is fixedly connected with a second truss extending in the height direction of the shear wall at a position corresponding to the position between the two adjacent edge steel reinforcement groups, the first end of the second truss is inserted into the L-shaped shear wall second formwork to fix the second steel mesh sheet on the L-shaped shear wall second formwork, and the second end of the second truss is arranged towards the L-shaped shear wall first formwork.

[0016] Optionally, the L-shaped shear wall second formwork is provided with a mounting groove and a through hole sequentially communicating from the outside to the inside, the second end of the first truss is fixedly provided with a mounting nut, and the mounting nut corresponds to the through hole in position; the L-shaped shear wall second formwork is embedded with a steel mesh and a plurality of support steel plates, the plurality of support steel plates are arranged in sequence and at intervals in the horizontal direction, the support steel plates are arranged at positions corresponding to the mounting groove, the support steel plates are located on the inner side of the mounting groove, the support steel plates are provided with through holes, the support steel plates are welded on the steel mesh, and the support steel plates are provided with pouring holes between adjacent through holes; the screw rod of the T-shaped mounting bolt can be threadedly connected with the mounting nut through the through hole, and the head of the T-shaped mounting bolt is accommodated in the mounting groove.

[0017] Optionally, when the prefabricated wall is used as a module inner wall, the prefabricated wall comprises a partition wall and a T-shaped shear wall first formwork connected in sequence, and the T-shaped shear wall first formwork is used for splicing with a T-shaped shear wall second formwork of a prefabricated wall of a subsequent box module to form a T-shaped shear wall module;

[0018] The first end of the third truss is inserted into the shear wall formwork to fix the third steel mesh sheet on the shear wall first formwork, and the second end of the third truss is arranged towards the outside of the module.

[0019] Optionally, when the prefabricated wall is used as a module inner wall, the prefabricated wall comprises a partition wall and a T-shaped shear wall second mold shell connected in sequence, and the T-shaped shear wall second mold shell is used to splice with the T-shaped shear wall first mold shell of the prefabricated wall of the previous box module to form a T-shaped shear wall mold;

[0020] The fourth steel mesh sheet for connecting the third and fourth edge steel bar groups is arranged on one side of the T-shaped shear wall second mold shell facing away from the inside of the module, and the fourth steel mesh sheet is fixedly connected with a fourth truss extending along the height direction of the shear wall at positions corresponding to the third and fourth edge steel bar groups, the first end of the fourth truss is inserted into the T-shaped shear wall second mold shell to fix the fourth steel mesh sheet on the T-shaped shear wall second mold shell, and the second end of the fourth truss is arranged towards the outside of the module.

[0021] Optionally, the T-shaped shear wall second mold shell is provided with a mounting slot and a through hole connected in sequence from the outside to the inside, and the second end of the third truss is fixedly provided with a mounting nut; the T-shaped shear wall first mold shell and the T-shaped shear wall second mold shell are spliced to form a T-shaped shear wall mold, the mounting nut corresponds to the through hole in position, the threaded shank of a T-shaped mounting bolt can be threadedly connected with the mounting nut by penetrating through the through hole, and the head of the T-shaped mounting bolt is accommodated in the mounting slot.

[0022] Optionally, the beam mold shell is used to splice with the beam mold shell of the previous box module to form a beam mold; the beam mold shell is provided with a mounting hole, and after the beam mold shell is spliced with the beam mold shell of the previous box module to form a beam mold, the mounting hole corresponds to the mounting hole provided on the beam mold shell of the previous box module in position, and a pull bolt can penetrate through the two mounting holes in sequence and be fastened on the beam mold by a pull nut.

[0023] In a second aspect, the present application provides a production method of the concrete box module as described above, comprising:

[0024] S1, installing the first prefabricated wall and the second prefabricated wall on the first side and the second side of the mold in the module, respectively;

[0025] S2, installing the first steel cage and the second steel cage on the third side and the fourth side of the mold in the module, respectively, and the two ends of the first steel cage are respectively matched with the first prefabricated wall and the second prefabricated wall to form a steel lap joint structure, and the two ends of the second steel cage are respectively matched with the first prefabricated wall and the second prefabricated wall to form a steel lap joint structure;

[0026] S3, installing the prefabricated module top plate on the top of the mold in the module, and the top of the first prefabricated wall, the top of the second prefabricated wall, the top of the first steel cage and the top of the second steel cage are respectively matched with the edge part of the prefabricated module top plate in position to form a steel lap joint structure;

[0027] S4, install the outer mold of the mold module corresponding to the position of the first steel reinforcement cage, the second steel reinforcement cage and the steel reinforcement lap joint structure to form a first pouring cavity; pour concrete into the first pouring cavity to form a five-dimensional module.

[0028] S5, after the five-dimensional module has a certain strength, the mold of the cast-in-place wall body is removed, then the bottom plate steel reinforcement is tied on the bottom mold platform, and finally the module bottom plate is poured to form a complete six-dimensional module.

[0029] Optionally, the production process of the L-shaped shear wall mold is further included before S1:

[0030] A01, forming a first steel reinforcement mesh, a second steel reinforcement mesh, a first edge steel reinforcement group, a second edge steel reinforcement group, a first truss and a second truss through automatic welding; connecting the two ends of the first steel reinforcement mesh with the first edge steel reinforcement group and the second edge steel reinforcement group respectively through automatic welding, connecting the first end of the first truss with the first steel reinforcement mesh, and connecting the first end of the second truss with the second steel reinforcement mesh; pouring concrete into the flat first mold platform, the second mold platform and the third mold platform respectively;

[0031] A02, before the concrete in the first mold platform solidifies, pressing the first end of the first truss into the concrete, and the first steel reinforcement mesh is located above the concrete, and after demolding, a first prefabricated component is formed; before the concrete in the second mold platform solidifies, pressing the first end of the second truss into the concrete, and the second steel reinforcement mesh is located above the concrete, and after demolding, a second prefabricated component is formed; before the concrete in the third mold platform solidifies, pressing the first steel reinforcement group into the concrete, and after demolding, a third prefabricated component is formed;

[0032] A03, connecting the first end of the third prefabricated component with the second end of the first prefabricated component to form an L shape, arranging the first prefabricated component and the second prefabricated component face to face, connecting the second end of the first truss with the second steel reinforcement mesh through automatic welding, and connecting the two ends of the second steel reinforcement mesh with the first edge steel reinforcement group and the second edge steel reinforcement group respectively to obtain an L-shaped shear wall mold.

[0033] Optionally, the production process of the T-shaped shear wall first mold shell and the T-shaped shear wall second mold shell is further included before S1:

[0034] B01, forming a third steel reinforcement mesh, a third truss, a fourth steel reinforcement mesh, a fourth truss, a third edge steel reinforcement group and a fourth edge steel reinforcement group through automatic welding; connecting the third edge steel reinforcement group and the fourth edge steel reinforcement group with the two ends of the third steel reinforcement mesh respectively through automatic welding, connecting the first end of the third truss with the third steel reinforcement mesh, and connecting the first end of the fourth truss with the fourth steel reinforcement mesh; pouring concrete into the flat fourth mold platform, the fifth mold platform, the sixth mold platform and the seventh mold platform respectively;

[0035] B02、in the fourth formwork before the concrete is not solidified, the first end of the third truss is pressed into the concrete, and the third steel mesh is located above the concrete, and the first wall form is formed after demolding; in the fifth formwork before the concrete is not solidified, the first end of the fourth truss is pressed into the concrete, and the fourth steel mesh is located above the concrete, and the second wall form is formed after demolding; in the sixth formwork before the concrete is not solidified, the pull bar of the second steel bar group is pressed into the concrete, and the third wall form is formed after demolding; in the seventh formwork before the concrete is not solidified, the pull bar of the third steel bar group is pressed into the concrete, and the fourth wall form is formed after demolding;

[0036] Step B03, the second end of the first wall form is connected with the first end of the third wall form to form an L shape, and a T-shaped shear wall first form shell is obtained; the second end of the second wall form is connected with the first end of the fourth wall form to form an L shape, and a T-shaped shear wall second form shell is obtained.

[0037] (Three) beneficial effects

[0038] The beneficial effects of the present application are:

[0039] The concrete box module provided by the present application, the first prefabricated wall and the second prefabricated wall contain a part of the shear wall internal steel bar group embedded in the shear wall form shell in advance, so that the connection of the shear wall steel bar is generated in the production process of the box module, reducing the amount of on-site connection of the shear wall steel bar in the construction process, and the steel bar embedded in the shear wall form shell is a two-dimensional structure, facilitating the automatic binding or welding of the steel bar in the production process of the box module, and improving the production efficiency. In addition, by arranging the truss on the shear wall form shell, the truss can effectively overlap with the concrete of the shear wall during the construction process of pouring concrete to form a shear wall, and jointly participate in the structure stress, so that the shear wall form shell becomes a part of the shear wall, that is, the shear wall form shell also becomes a force member, instead of only being used as a temporary formwork, improving the material utilization rate and increasing the available building area indoors. BRIEF DESCRIPTION OF DRAWINGS

[0040] The present application is described with the help of the following drawings:

[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the concrete box module of Example 1;

[0042] Figure 2 It is a schematic diagram of the top view structure of the concrete box module of Example 1, wherein the mold in the module is shown;

[0043] Figure 3 It is a schematic diagram of the assembly structure of the prefabricated wall used as the outer wall of the module of Example 1;

[0044] Figure 4 It is a schematic diagram of the overall structure of the L-shaped shear wall of Example 1;

[0045] Figure 5 exploded structural view of the L-shaped shear wall of Example 1;

[0046] Figure 6 structural view of the first truss of Example 1;

[0047] Figure 7 perspective structural view of the first truss of Example 1;

[0048] Figure 8 structural view of the steel mesh and the plurality of support steel plates embedded in the second formwork of the L-shaped shear wall of Example 1;

[0049] Figure 9 structural view of the assembled L-shaped shear wall of Example 1;

[0050] Figure 10 structural view of the assembled prefabricated wall used as a module interior wall of Example 1;

[0051] Figure 11 structural view of the assembled T-shaped shear wall of Example 1;

[0052] Figure 12 exploded structural view of the T-shaped shear wall of Example 1;

[0053] Figure 13 structural view of two transversely spliced concrete box modules of Example 1;

[0054] Figure 14 Figure 13 cross-sectional view at A-A showing one module layer;

[0055] Figure 15 Figure 13 cross-sectional view at B-B showing two module layers;

[0056] Figure 16 Figure 13 cross-sectional view at C-C showing two module layers;

[0057] Figure 17 Figure 13 cross-sectional view at D-D showing two module layers.

[0058]

BRIEF DESCRIPTION OF DRAWINGS

[0059] 1: module top plate;

[0060] 2: first prefabricated wall;

[0061] ​​​​21: first formwork of L-shaped shear wall; 22: second formwork of L-shaped shear wall; 23: first steel mesh; 24: first truss; 25: second steel mesh; 26: second truss; 27: first edge steel group; 28: second edge steel group; 29: first steel group;

[0062] 211: first flat portion; 212: second flat portion;

[0063] 221: mounting slot; 222: through hole; 223: steel mesh; 224: support steel plate; 225: pouring hole;

[0064] 241: mounting nut; 242: T-shaped mounting bolt; 243: first flat steel; 244: first truss vertical rib; 245: supporting steel; 246: first vertical rib;

[0065] 261: second flat steel; 262: third flat steel;

[0066] 281: wall-mounted longitudinal rib; 282: tie;

[0067] 3: first post-cast wall;

[0068] 4: second prefabricated wall;

[0069] 41: first formwork of T-shaped shear wall; 42: second formwork of T-shaped shear wall; 43: third steel mesh; 44: third truss; 45: fourth steel mesh; 46: fourth truss; 47: third edge steel group; 48: fourth edge steel group;

[0070] 411: third flat portion; 412: fourth flat portion;

[0071] 421: fifth flat portion; 422: sixth flat portion;

[0072] 5: second post-cast wall;

[0073] 61: beam formwork; 63: tie bolt; 64: protrusion;

[0074] 71: spiral stirrup; 72: connecting steel; 73: threaded sleeve. DETAILED DESCRIPTION

[0075] Example 1

[0076] As Figure 1 and Figure 2As shown, the box module comprises a module top plate 1, and a first prefabricated wall 2, a first post-cast wall 3, a second prefabricated wall 4 and a second post-cast wall 5 connected in turn around the edge of the module top plate 1. In this embodiment, the first prefabricated wall 2 and the second prefabricated wall 4 are oppositely arranged, and the first post-cast wall 3 and the second post-cast wall 5 are oppositely arranged, and the box module is in the shape of a cuboid.

[0077] The shear wall mold generally comprises oppositely arranged first and second shear wall mold shells, and a flat-shaped cavity is formed between the first and second shear wall mold shells, and a reinforcement cage is accommodated in the flat-shaped cavity, the reinforcement cage comprises edge reinforcement groups and internal reinforcement groups for connecting adjacent two edge reinforcement groups, and the edge reinforcement group refers to a cage-shaped structure formed by processing steel bars in a concrete structure for constructing edge hidden columns, edge end columns and edge corner walls.

[0078] The first prefabricated wall 2 and the second prefabricated wall 4 each comprise a partition wall and a shear wall mold shell connected in turn, one side of the shear wall mold shell facing the interior of the module serves as an inner surface of the module, and the other side of the shear wall mold shell away from the interior of the module is paved with a steel mesh sheet for connecting adjacent two edge reinforcement groups, the steel mesh sheet is fixedly connected with a truss extending in the height direction of the shear wall at a position corresponding to the position between the adjacent two edge reinforcement groups, the first end of the truss is inserted into the shear wall mold shell to fix the steel mesh sheet on the shear wall mold shell, and the second end of the truss is arranged towards the exterior of the module.

[0079] The top of the shear wall mold shell is connected with the edge of the module top plate 1, the top of the partition wall is connected with the edge of the module top plate 1 through the beam mold shell 61, the top of the first post-cast wall 3 is connected with the edge of the module top plate 1, and the bottom of the second post-cast wall 5 is connected with the edge of the module top plate 1; the top of the shear wall mold shell is connected with the edge of the module bottom plate, the bottom of the partition wall is connected with the edge of the module bottom plate, the bottom of the first post-cast wall 3 is connected with the edge of the module bottom plate, and the bottom of the second post-cast wall 5 is connected with the edge of the module bottom plate.

[0080] The thickness of the beam mold shell is within 30mm, and the thickness of the shear wall mold shell is within 30mm.

[0081] In this type of concrete box-type module, a portion of the internal steel reinforcement of the shear wall is pre-embedded in the shear wall formwork of the first precast wall 2 and the second precast wall 4. This allows the connection of the shear wall reinforcement to occur during the production process of the box-type module, reducing the amount of on-site connection of the shear wall reinforcement during construction. Furthermore, the steel reinforcement embedded in the shear wall formwork is a two-dimensional structure, facilitating automated binding or welding of the reinforcement during the production of the box-type module, thus improving production efficiency. In addition, by setting trusses on the shear wall formwork, the trusses can effectively overlap with the concrete of the shear wall during construction, jointly participating in the structural stress. This makes the shear wall formwork an integral part of the shear wall, i.e., the shear wall formwork also becomes a load-bearing component, rather than merely a temporary formwork, thereby improving material utilization and increasing the usable indoor building area.

[0082] The structure of prefabricated walls varies depending on whether they are used as interior or exterior walls of modules, and will be described in detail below.

[0083] When precast walls (which can be either the first precast wall 2 or the second precast wall 4) are used as modular exterior walls, such as Figure 3 As shown, the precast wall includes a first shear wall formwork and a second shear wall formwork opposite to it. Both the first and second shear wall formworks are connected to the partition wall. The side of the first shear wall formwork facing the interior of the module serves as the inner surface of the module, and the side of the second shear wall formwork facing away from the interior of the module serves as the outer surface of the module. A first steel mesh 23 for connecting two adjacent edge steel reinforcement groups is laid on the side of the first shear wall formwork facing away from the interior of the module. A first truss 24 extending along the height direction of the shear wall is fixedly connected to the first steel mesh 23 at the position between the two adjacent edge steel reinforcement groups. The first end of the first truss 24 is inserted into the first shear wall formwork to fix the first steel mesh 23 to the first shear wall formwork, and the second end of the first truss 24 faces the second shear wall formwork. A second steel mesh 25 for connecting two adjacent edge steel reinforcement groups is laid on the inner side of the second formwork of the shear wall. A second truss 26 extending along the height of the shear wall is fixedly connected to the second steel mesh 25 at the position between the two adjacent edge steel reinforcement groups. The first end of the second truss 26 is inserted into the second formwork of the shear wall to fix the second steel mesh 25 to the second formwork of the shear wall. The second end of the second truss 26 is set towards the first formwork of the shear wall. The second end of the first truss 24 is fixedly connected to the second steel mesh 25.

[0084] Thus, a part of the internal steel bar group of the shear wall is embedded in the second formwork of the shear wall, reducing the amount of on-site connection of the steel bars of the shear wall during construction, and the steel bars embedded in the second formwork of the shear wall are two-dimensional structures, facilitating automatic binding or welding of the steel bars during the production process of the box module, improving production efficiency; in addition, by arranging the second truss 26 on the second formwork of the shear wall, the second truss 26 can effectively overlap with the concrete of the shear wall during the pouring of the concrete to form the shear wall, and participate in the structure stress together, so that the second formwork of the shear wall becomes a part of the shear wall, i.e. the second formwork of the shear wall also becomes a force-bearing component, rather than just a temporary formwork, improving the material utilization rate and increasing the available indoor building area.

[0085] Preferably, as shown in Figure 3 the first prefabricated wall 2 is used as a module outer wall, the first prefabricated wall 2 comprises a partition wall and an L-shaped shear wall first formwork 21 connected in sequence, and an L-shaped shear wall second formwork arranged opposite to the L-shaped shear wall first formwork.

[0086] Preferably, as shown in Figures 4 to 9 the L-shaped shear wall first formwork 21 has a first straight portion 211 and a second straight portion 212, the second end of the first straight portion 211 and the second straight portion 212 are connected to form an L shape, and the L-shaped shear wall second formwork 22 is straight and corresponds to the first straight portion 211; the first edge steel bar group 27 is fixedly arranged at the first end of the first straight portion 211, the second edge steel bar group 28 is fixedly arranged at the second end of the first straight portion 211, the two ends of the first steel mesh 23 are fixedly connected with the first edge steel bar group 27 and the second edge steel bar group 28 respectively, and the two ends of the second steel mesh 25 are fixedly connected with the first edge steel bar group 27 and the second edge steel bar group 28 respectively.

[0087] Preferably, the first steel bar group 29 is fixedly arranged on the second straight portion 212, the stirrups of the first steel bar group 29 extending out of the second straight portion 212 are staggered and overlapped with the stirrups of the second edge steel bar group 28 extending out of the first straight portion 211 to form an overlapping portion, the wall longitudinal bars 281 extending along the height direction of the shear wall are inserted into the overlapping portion, and the second edge steel bar group 28 and the first steel bar group 29 are both fixedly connected with the wall longitudinal bars 281.

[0088] Preferably, the projection shape of the overlapping portion on the horizontal plane is a rectangle, four wall longitudinal bars 281 are inserted into the overlapping portion and are respectively located at the four corner portions of the overlapping portion, and the second edge steel bar group 28 and the first steel bar group 29 are both fixedly connected with each wall longitudinal bar 281.

[0089] It should be noted that the first edge reinforcement group 27, the second edge reinforcement group 28 and the first reinforcement group 29 are all structures in which the stirrups are additionally provided with the hoop reinforcement; the first edge reinforcement group 27, the second edge reinforcement group 28 and the first reinforcement group 29 all have the tensioning reinforcement 28 fixedly connected to the vertical reinforcement, and the part of the tensioning reinforcement 28 extending out of the hoop reinforcement is embedded in the L-shaped shear wall formwork, so that the first edge reinforcement group 27, the second edge reinforcement group 28 and the first reinforcement group 29 are fixedly arranged on the L-shaped shear wall formwork.

[0090] Preferably, the L-shaped shear wall second formwork 22 is provided with the mounting groove 221 and the through hole 222 which are sequentially communicated from the outside to the inside, the first truss 24 is fixedly provided with the mounting nut 241, the mounting nut 241 is in position correspondence with the through hole 222, the screw rod of the T-shaped mounting bolt 242 can penetrate through the through hole 222 and be threadedly connected with the mounting nut 241, and the head of the T-shaped mounting bolt 242 is accommodated in the mounting groove 221. In this way, the L-shaped shear wall first formwork 21 and the L-shaped shear wall second formwork 22 can be formed into a tension connection, the side stress is formed between the L-shaped shear wall first formwork 21 and the L-shaped shear wall second formwork 22, and the deformation and rupture of the formwork in the subsequent construction process can be prevented.

[0091] Preferably, the first truss 24 comprises the first plane reinforcement 243 and the first truss vertical reinforcement 244 which extend along the height direction of the shear wall, the first plane reinforcement 243 is formed into a triangular wave shape by continuously bending one reinforcement, the first plane reinforcement 243 has the opposite first end and second end in the direction in which the first formwork points to the second formwork, the first plane reinforcement 243 is arranged perpendicularly to the first reinforcement mesh 23, the first end of the first plane reinforcement 243 is fixedly connected to the first reinforcement mesh 23 through the first truss vertical reinforcement 244, the first end of the first plane reinforcement 243 is in a bent shape and is inserted into the first formwork, and the second end of the first plane reinforcement 243 is fixedly connected to the second reinforcement mesh 25.

[0092] Further, the mounting nut 241 is fixed to the second end of the first plane reinforcement 243.

[0093] Further preferably, the first end of the supporting reinforcement 245 which extends along the direction in which the L-shaped shear wall first formwork 21 points to the L-shaped shear wall second formwork 22 is bent and inserted into the L-shaped shear wall first formwork 21, and the second end of the supporting reinforcement 245 is fixedly connected to the mounting nut 241. In this way, the supporting reinforcement 245 can support the mounting nut 241, which is conducive to the stable installation of the mounting nut 241 on the first truss 24. Further, the first end of the supporting reinforcement 245 is also fixedly connected to the first reinforcement mesh 23.

[0094] Preferably, the second truss 26 comprises a second plane steel bar 261, a third plane steel bar 262 and a second truss 26 vertical bar extending along the height direction of the shear wall, the second plane steel bar 261 and the third plane steel bar 262 are both formed by continuously bending a steel bar into a triangular wave shape, and both the second plane steel bar 261 and the third plane steel bar 262 have opposite first ends and second ends in the direction in which the first formwork points to the second formwork; the angle between the second plane steel bar 261 and the second steel mesh 25 is consistent with the angle between the third plane steel bar 262 and the second steel mesh 25; the first end of the second plane steel bar 261 is fixedly connected to the first end of the third plane steel bar 262 through the second truss 26 vertical bar, the second end of the second plane steel bar 261 is bent and inserted into the L-shaped shear wall second formwork 22, and the second end of the third plane steel bar 262 is bent and inserted into the L-shaped shear wall second formwork 22; the second truss 26 is located between two adjacent first trusses 24. Further, the second truss 26 is arranged in a spaced manner with the first steel mesh 23.

[0095] Preferably, the horizontal steel bars in the first steel mesh 23 are stress steel bars, and the horizontal steel bars in the second steel mesh 25 are stress steel bars; the second steel mesh 25 has a first vertical bar 246 fixedly connected to the second end of the first plane steel bar 243, and the first truss vertical bar 244 and the first vertical bar 246 are stress steel bars. In this way, a double-layer and double-direction (horizontal direction and height direction of the shear wall) stress steel bar cage is formed, which not only ensures the stability of the steel bar cage structure, but also saves steel bar materials and reduces costs. Specifically, the diameter of the stress steel bar is 10-16 mm.

[0096] Preferably, the L-shaped shear wall second formwork 22 is embedded with a steel mesh 223 and a plurality of support steel plates 224 arranged in a spaced manner along the horizontal direction; the support steel plates 224 are arranged at positions corresponding to the nut mounting grooves 221, and are located on the inner side of the nut mounting grooves 221; the support steel plates 224 are welded to the steel mesh 223, and extend from the top of the second formwork to the bottom of the second formwork; the support steel plates 224 are provided with through holes 222 for the T-shaped mounting bolts 242 to pass through, and are provided with pouring holes 225 between adjacent through holes 222. In this way, the structural strength of the second formwork is improved, the connection between the mounting nuts 241 and the T-shaped mounting bolts 242 is stabilized, and the pouring and forming of the second prefabricated component are facilitated through the pouring holes 225.

[0097] When the prefabricated wall (which can be the first prefabricated wall 2 or the second prefabricated wall 4) is used as an inner wall of a module, as shown in FIG. 6, the first prefabricated wall 2 is arranged in a spaced manner with the second prefabricated wall 4, and the first prefabricated wall 2 and the second prefabricated wall 4 are connected through the T-shaped mounting bolts 242 and the mounting nuts 241. Figure 10As shown, the prefabricated wall body includes the partition wall and the T-shaped shear wall first formwork 41 connected in sequence, and is used for splicing with the T-shaped shear wall second formwork 42 of the prefabricated wall body of the subsequent box module to form a T-shaped shear wall wall form. The T-shaped shear wall first formwork 41 has a third flat part 411 and a fourth flat part 412, the second end of the third flat part 411 and the fourth flat part 412 are connected to form an L shape, one side of the third flat part 411 facing away from the inside of the module is paved with a third steel mesh 43, a third edge steel bar group 47 is fixedly arranged at the first end of the third flat part 411, a fourth edge steel bar group 48 is fixedly arranged at the second end of the third flat part 411, and the two ends of the third steel mesh 43 are fixedly connected with the third edge steel bar group 47 and the fourth edge steel bar group 48 respectively; the third steel mesh 43 is fixedly connected with a third truss 44 extending in the height direction of the shear wall at a position corresponding to the first and fourth edge steel bar groups 48, the first end of the third truss 44 is inserted into the shear wall formwork to fix the third steel mesh 43 on the shear wall formwork, and the second end of the third truss 44 is arranged towards the outside of the module.

[0098] In this way, most of the T-shaped shear wall steel bars are pre-arranged in the T-shaped shear wall first formwork 41, and a small part of the T-shaped shear wall steel bars are pre-arranged in the T-shaped shear wall second formwork 42, so that when the box modules are assembled during construction, the T-shaped shear wall second formwork 42 of the subsequent module is conveniently moved to be aligned and spliced with the T-shaped shear wall first formwork 41 of the previous module to form a T-shaped shear wall wall form, and the situation of steel bar collision during splicing is reduced.

[0099] When the prefabricated wall body (which can be the first prefabricated wall body 2 or the second prefabricated wall body 4) is used as the inner wall of the module, the prefabricated wall body includes the partition wall and the T-shaped shear wall second formwork 42 connected in sequence, and is used for splicing with the T-shaped shear wall first formwork 41 of the prefabricated wall body of the previous box module to form a T-shaped shear wall wall form. The T-shaped shear wall second formwork 42 has a fifth flat part 421 and a sixth flat part 422, the second end of the fifth flat part 421 and the sixth flat part 422 are connected to form an L shape, one side of the fifth flat part 421 facing away from the inside of the module is paved with a fourth steel mesh 45 for connecting the first and fourth edge steel bar groups 48, the fourth steel mesh 45 is fixedly connected with a fourth truss 46 extending in the height direction of the shear wall at a position corresponding to the first and fourth edge steel bar groups 48, the first end of the fourth truss 46 is inserted into the T-shaped shear wall second formwork 42 to fix the fourth steel mesh 45 on the T-shaped shear wall second formwork 42, and the second end of the fourth truss 46 is arranged towards the outside of the module.

[0100] In this way, when assembling the box-type modules during construction, it is convenient to move the second formwork shell 42 of the T-shaped shear wall of the next module to align and splice with the first formwork shell 41 of the T-shaped shear wall of the previous module to form the T-shaped shear wall formwork, reducing the occurrence of steel bar collisions during the splicing process.

[0101] It should be noted that "front" and "back" refer to the order in which the box-type modules are installed during the construction process.

[0102] like Figure 11 and Figure 12 As shown, preferably, the second steel reinforcement group is fixedly installed on the fourth straight section 412, and the third steel reinforcement group is fixedly installed on the sixth straight section 422; the first formwork shell 41 and the second formwork shell 42 of the T-shaped shear wall are spliced ​​together to form the T-shaped shear wall formwork, and the second steel reinforcement group, the fourth edge steel reinforcement group 48 extending out of the third straight section 411, and the third steel reinforcement group are arranged sequentially in the horizontal direction.

[0103] It should be noted that the third edge reinforcement group 47, the fourth edge reinforcement group 48, the second reinforcement group, and the third reinforcement group are all structures with stirrups added around the vertical reinforcement; the third edge reinforcement group 47, the fourth edge reinforcement group 48, the second reinforcement group, and the third reinforcement group all have tie bars 28 fixedly connected to the vertical reinforcement. The part of the tie bar 28 extending out of the stirrup is embedded in the T-shaped shear wall formwork, so that the third edge reinforcement group 47, the fourth edge reinforcement group 48, the second reinforcement group, and the third reinforcement group are fixedly set on the T-shaped shear wall formwork.

[0104] Preferably, the second formwork shell 42 of the T-shaped shear wall has an installation groove 221 and a through hole 222 connected sequentially from the outside to the inside, and an installation nut 241 is fixedly installed at the second end of the third truss 44; the first formwork shell 41 and the second formwork shell 42 of the T-shaped shear wall are spliced ​​together to form the T-shaped shear wall formwork, the installation nut 241 corresponds to the through hole 222, the screw of the T-shaped installation bolt 242 can pass through the through hole 222 and be threaded to the installation nut 241, and the head of the T-shaped installation bolt 242 is accommodated in the installation groove 221. In this way, after the first formwork shell 41 and the second formwork shell 42 of the T-shaped shear wall are spliced ​​together to form the T-shaped shear wall formwork, the first formwork shell 41 and the second formwork shell 42 of the T-shaped shear wall can form a tension connection, and lateral stress is generated between the first formwork shell 41 and the second formwork shell 42 of the T-shaped shear wall, preventing the formwork from deforming or cracking during subsequent construction.

[0105] Preferably, the structure of the third truss 44 is the same as that of the first truss 24 described above, and will not be repeated here.

[0106] Further preferably, the first end of the supporting steel bars 245 is bent and inserted into the T-shaped shear wall first formwork 41 in a direction pointing to the T-shaped shear wall second formwork 42, and the second end of the supporting steel bars 245 is fixedly connected with the mounting nut 241. In this way, the supporting steel bars 245 can support the mounting nut 241, which is conducive to the stable installation of the mounting nut 241 on the third truss 44. Further, the first end of the supporting steel bars 245 is also fixedly connected with the third steel mesh 43.

[0107] Preferably, the fourth truss 46 has the same structure as the second truss 26, which will not be described herein again.

[0108] Preferably, the T-shaped shear wall second formwork 42 is also embedded with the steel mesh 223 and the plurality of supporting steel plates 224, which have the same structure as the steel mesh 223 and the plurality of supporting steel plates 224 embedded in the L-shaped shear wall second formwork 22, which will not be described herein again.

[0109] In summary, according to the structures of the first prefabricated wall 2 and the second prefabricated wall 4, the concrete box module generally has the following four types. The first type of concrete box module, the first prefabricated wall 2 is used as the outer wall of the module, and the second prefabricated wall 4 is used as the inner wall of the module, and the second prefabricated wall 4 includes the partition wall and the T-shaped shear wall first formwork 41 connected in sequence. The second type of concrete box module, the first prefabricated wall 2 is used as the inner wall of the module, and the first prefabricated wall 2 includes the partition wall and the T-shaped shear wall second formwork 42 connected in sequence, and the second prefabricated wall 4 is used as the outer wall of the module. The third type of concrete box module, the first prefabricated wall 2 is used as the inner wall of the module, and the first prefabricated wall 2 includes the partition wall and the T-shaped shear wall first formwork 41 connected in sequence, and the second prefabricated wall 4 is used as the inner wall of the module, and the second prefabricated wall 4 includes the partition wall and the T-shaped shear wall second formwork 42 connected in sequence.

[0110] As shown in Figure 13 and Figure 14 The beam form generally includes two beam form formworks 61 oppositely arranged, and a straight cavity is formed between the two beam form formworks 61 for accommodating a steel reinforcement cage.

[0111] The top of the partition wall, the first post-cast wall body 3 and the second post-cast wall body 5 is formed with a beam formwork 61, and the top of the beam formwork 61 is connected with the edge of the module top plate 1. The side of the beam formwork 61 facing the inside of the module serves as the inner surface of the module, and the beam formwork 61 is provided with a mounting hole. After the beam formwork 61 is spliced with the beam formwork 61 of the adjacent box module to form a beam form, the mounting hole is positioned corresponding to the mounting hole provided on the beam formwork 61 of the adjacent box module, and the pull bolt 63 can be sequentially penetrated through the two mounting holes and fastened on the beam form by the pull nut. The beam formwork 61 arranged in this way can form a pull connection between the two formworks of the beam form after the beam formwork 61 is spliced with the beam formwork 61 of the adjacent box module to form a beam form, and form a lateral stress between the two formworks of the beam form to prevent the beam formwork 61 from deforming or cracking during subsequent construction.

[0112] Preferably, the side of the beam formwork 61 facing the outside of the module is provided with a protrusion 64 corresponding to the position of the mounting hole, and the mounting hole is provided through the protrusion 64. In this way, the structural strength of the beam formwork 61 is improved, and the connection of the pull bolt 63 and the pull nut is stabilized.

[0113] Embodiment 2

[0114] As shown in Figures 13 to 17 Based on the concrete box module provided in Embodiment 1, this embodiment provides a concrete modular building spliced by the concrete box module provided in Embodiment 1.

[0115] The concrete modular building includes at least two layers of vertically connected concrete module layers, each layer of concrete module layers includes at least two laterally spliced concrete box modules, and the shear wall form in the upper layer of concrete module layers is positionally corresponding to the shear wall form in the lower layer of concrete module layers, and the positionally corresponding upper layer of shear wall form and the lower layer of shear wall form are overlapped by steel bars.

[0116] Specifically, the L-shaped shear wall form in the upper layer of concrete module layers is positionally corresponding to the L-shaped shear wall form in the lower layer of concrete module layers, and the T-shaped shear wall form in the upper layer of concrete module layers is positionally corresponding to the T-shaped shear wall form in the lower layer of concrete module layers.

[0117] The first edge steel bar group 27 and the second edge steel bar group 28 of the lower L-shaped shear wall form are respectively vertically inserted with the spiral stirrup 71, and the spiral stirrup 71 is fixedly connected with the first edge steel bar group 27 and the second edge steel bar group 28, one end of the spiral stirrup 71 upwardly extending out of the lower L-shaped shear wall form is inserted into the first edge steel bar group 27 and the second edge steel bar group 28 of the upper L-shaped shear wall form; the two end vertical steel bars of the first truss 24 of the lower L-shaped shear wall form are upwardly inserted into the upper L-shaped shear wall form; the connecting steel bar 72 is vertically inserted into the first steel bar group 29 of the lower L-shaped shear wall form, the first end of the connecting steel bar 72 is fixedly connected with the first steel bar group 29, the second end of the connecting steel bar 72 upwardly extends out of the lower L-shaped shear wall form and is inserted into the first steel bar group 29 of the upper L-shaped shear wall form, and the second end of the connecting steel bar 72 is provided with the screw sleeve 73 for being threadedly connected with the first end of the connecting steel bar 72 vertically inserted into the upper L-shaped shear wall form.

[0118] The first edge steel bar group 27 and the second edge steel bar group 28 of the lower L-shaped shear wall form are respectively vertically inserted with the spiral stirrup 71, and the spiral stirrup 71 is fixedly connected with the first edge steel bar group 27 and the second edge steel bar group 28, one end of the spiral stirrup 71 upwardly extending out of the lower L-shaped shear wall form is inserted into the first edge steel bar group 27 and the second edge steel bar group 28 of the upper L-shaped shear wall form; the two end vertical steel bars of the first truss 24 of the lower L-shaped shear wall form are upwardly inserted into the upper L-shaped shear wall form; the connecting steel bar 72 is vertically inserted into the first steel bar group 29 of the lower L-shaped shear wall form, the first end of the connecting steel bar 72 is fixedly connected with the first steel bar group 29, the second end of the connecting steel bar 72 upwardly extends out of the lower L-shaped shear wall form and is inserted into the first steel bar group 29 of the upper L-shaped shear wall form, and the second end of the connecting steel bar 72 is provided with the screw sleeve 73 for being threadedly connected with the first end of the connecting steel bar 72 vertically inserted into the upper L-shaped shear wall form.

[0119] The upper and lower concrete module layers are connected more stably through the above arrangement.

[0120] Embodiment 3

[0121] The embodiment provides a production method of the concrete box-type module as described in Embodiment 1, and the method comprises the following steps:

[0122] In step S1, the first prefabricated wall body and the second prefabricated wall body are respectively arranged at the first side and the second side of the mold in the module, and the first end of the first prefabricated wall body is positionally corresponding to the first end of the second prefabricated wall body, and the second end of the first prefabricated wall body is positionally corresponding to the second end of the second prefabricated wall body.

[0123] Step S2, install the first reinforcement cage on the third side of the in-module mold, and between the first precast wall and the second precast wall, the first end of the first precast wall and the first end of the first reinforcement cage form a steel lap joint structure, and the first end of the second precast wall and the second end of the first reinforcement cage form a steel lap joint structure; install the second reinforcement cage on the fourth side of the in-module mold, and between the first precast wall and the second precast wall, the second end of the first precast wall and the first end of the second reinforcement cage form a steel lap joint structure, and the second end of the second precast wall and the second end of the second reinforcement cage form a steel lap joint structure.

[0124] Step S3, install the precast module top plate on the top of the in-module mold, the precast module top plate is located in the surrounding area of the first precast wall, the second precast wall, the first reinforcement cage and the second reinforcement cage, and the top of the first precast wall, the top of the second precast wall, the top of the first reinforcement cage and the top of the second reinforcement cage respectively cooperate with the edge part of the precast module top plate corresponding to its position to form a steel lap joint structure.

[0125] Step S4, install the out-module mold at the position corresponding to the first reinforcement cage, the second reinforcement cage and the steel lap joint structure to form a first pouring cavity; pour concrete into the first pouring cavity to form a first post-cast wall at the first reinforcement cage and a second post-cast wall at the second reinforcement cage, and connect the precast module top plate with the first precast wall, the second precast wall, the first post-cast wall and the second post-cast wall.

[0126] Step S5, install the steel structure on the bottom of the in-module mold, and the bottom of the first precast wall, the bottom of the second precast wall, the bottom of the first reinforcement cage and the bottom of the second reinforcement cage respectively cooperate with the steel structure corresponding to its position to form a steel lap joint structure.

[0127] Step S6, install the out-module mold at the position corresponding to the steel lap joint structure to form a second pouring cavity; pour concrete into the second pouring cavity to obtain a concrete box module.

[0128] It should be noted that the in-module mold refers to a mold for matching the internal shape and structure of the concrete box module, and the out-module mold refers to a mold for matching the external shape and structure of the concrete box module.

[0129] The production method of the concrete box module as described above has low requirements for the module mold, does not require the mold to be completely matched with the shape and size of the module, makes the shape and structure of the mold simpler, improves the applicability of the mold, and further improves the utilization rate of the mold, so that the mold can be applied to multiple projects and reduce costs.

[0130] Preferably, the production process of the L-shaped shear wall wall mold is further included before step S1, such as Figure 9As shown, the production process of the L-shaped shear wall wall mold includes:

[0131] Step A01, forming a first steel mesh, a second steel mesh, a first edge steel bar group, a second edge steel bar group, a first truss and a second truss by automatic welding; connecting the two ends of the first steel mesh with the first edge steel bar group and the second edge steel bar group respectively by automatic welding, connecting the first end of the first truss with the first steel mesh, and connecting the first end of the truss with the second steel mesh; pouring concrete into the first mold table, the second mold table and the third mold table respectively.

[0132] Among them, the first mold table corresponds to the first straight part, the second mold table corresponds to the second mold shell of the L-shaped shear wall, and the third mold table corresponds to the second straight part.

[0133] Among them, step A01 can further include: welding a plurality of support steel plates on the steel mesh to form a support structure, and pouring concrete into the second mold table after installing the support structure in the second mold table.

[0134] Step A02, before the concrete in the first mold table solidifies, press the first end of the first truss into the concrete, and the first steel mesh is located above the concrete, and after curing and demolding, a first prefabricated component is formed; before the concrete in the second mold table solidifies, press the first end of the truss into the concrete, and the second steel mesh is located above the concrete, and after curing and demolding, a second prefabricated component is formed; before the concrete in the third mold table solidifies, press the first steel group into the concrete, and after curing and demolding, a third prefabricated component is formed.

[0135] Among them, step A02 can further include: before the concrete in the first mold table solidifies, press the tie bar of the first edge steel bar group and the second edge steel bar group into the concrete, and the stirrup of the first edge steel bar group and the second edge steel bar group is located above the concrete.

[0136] Among them, step A02 can further include: before the concrete in the third mold table solidifies, press the tie bar of the first steel group into the concrete, and the stirrup of the first steel group is located above the concrete.

[0137] Step A03, connecting the first end of the second straight part with the second end of the first straight part to form an L shape, arranging the first prefabricated component and the second prefabricated component face to face, connecting the second end of the first truss with the second steel mesh by automatic welding, connecting the two ends of the second steel mesh with the first edge steel bar group and the second edge steel bar group respectively, and obtaining an L-shaped shear wall mold.

[0138] Among them, step A03 can further include: connecting the T-shaped mounting bolt with the mounting nut.

[0139] The step A03 can further include: the first edge reinforcement group and the second edge reinforcement group are fixedly connected with the wall longitudinal reinforcement.

[0140] Thus, in the production process of the first prefabricated component and the second prefabricated component, the automatic binding or welding of the first internal reinforcement group can be realized, the amount of reinforcement binding and reinforcement welding in the field construction is greatly reduced, and the production efficiency is greatly improved.

[0141] Preferably, before the step S1, the production process of the first prefabricated wall body is further included, the production process of the first prefabricated wall body occurs after the production process of the L-shaped shear wall mold, and the production process of the first prefabricated wall body includes: connecting the L-shaped shear wall mold and the partition wall mold, and separating the L-shaped shear wall mold cavity and the partition wall mold cavity, pouring concrete into the partition wall mold cavity, and forming the first prefabricated wall body after curing and demolding.

[0142] Preferably, before the step S1, the production process of the first prefabricated wall body is further included, the production process of the first prefabricated wall body occurs after the production process of the L-shaped shear wall mold, and the production process of the first prefabricated wall body includes: connecting the L-shaped shear wall mold and the partition wall mold, and separating the L-shaped shear wall mold cavity and the partition wall mold cavity, pouring concrete into the partition wall mold cavity, and forming the first prefabricated wall body after curing and demolding.

[0143] The step B01 forms the third reinforcement mesh, the third truss, the fourth reinforcement mesh, the fourth truss, the third edge reinforcement group and the fourth edge reinforcement group through automatic welding; the first edge reinforcement group and the second edge reinforcement group are connected with both ends of the third reinforcement mesh through automatic welding; the first end of the third truss is connected with the third reinforcement mesh; the first end of the fourth truss is connected with the fourth reinforcement mesh; and concrete is poured into the fourth mold table, the fifth mold table, the sixth mold table and the seventh mold table respectively.

[0144] The fourth mold table corresponds to the third straight part, the fifth mold table corresponds to the fifth straight part, the sixth mold table corresponds to the fourth straight part, and the seventh mold table corresponds to the sixth straight part.

[0145] The step B01 can further include: welding a plurality of support steel plates on the steel mesh to form a support structure, and pouring concrete into the second mold table after installing the support structure in the fourth mold table.

[0146] Step B02, before the concrete in the fourth formwork platform is not solidified, the first end of the third truss is pressed into the concrete, and the third steel mesh is located above the concrete, and after curing and demolding, a first wall form is formed; before the concrete in the fifth formwork platform is not solidified, the first end of the fourth truss is pressed into the concrete, and the fourth steel mesh is located above the concrete, and after curing and demolding, a second wall form is formed; before the concrete in the sixth formwork platform is not solidified, the tie bars of the second steel bar group are pressed into the concrete, and the stirrups of the second steel bar group are located above the concrete, and after curing and demolding, a third wall form is formed; before the concrete in the seventh formwork platform is not solidified, the tie bars of the third steel bar group are pressed into the concrete, and the stirrups of the third steel bar group are located above the concrete, and after curing and demolding, a fourth wall form is formed.

[0147] In step B02, the tie bars of the first edge steel bar group and the second edge steel bar group can also be pressed into the concrete before the concrete in the fourth formwork platform is not solidified, and the stirrups of the first edge steel bar group and the second edge steel bar group are located above the concrete.

[0148] Step B03, the second end of the first flat part is connected with the first end of the second flat part to form an L shape, and a T-shaped shear wall first form shell is obtained; the second end of the third flat part is connected with the first end of the fourth flat part to form an L shape, and a T-shaped shear wall second form shell is obtained.

[0149] In this way, during the production of the first wall form and the second wall form, the automatic binding or welding of the second internal steel bar group can be realized, greatly reducing the amount of steel bar binding and steel bar welding in the field construction, and greatly improving the production efficiency.

[0150] Before step S1, a second prefabricated wall production process is further included, which occurs after the production of the T-shaped shear wall first form shell and the T-shaped shear wall second form shell, and includes: connecting the T-shaped shear wall first form shell and / or the T-shaped shear wall second form shell with a partition wall form, separating the T-shaped shear wall form shell and the partition wall form cavity, pouring concrete into the partition wall form cavity, and after curing and demolding, a second prefabricated wall is formed.

[0151] It should be noted that the beam form of the partition wall is formed in the production process of the first prefabricated wall and the second prefabricated wall, and the connection between the beam form of the partition wall and the top plate of the prefabricated module is formed in step S4. The beam form of the first post-cast wall and the beam form of the second post-cast wall are formed in step S4.

[0152] Embodiment 4

[0153] The embodiment provides a construction method of a concrete modular building spliced based on the concrete box type module provided in embodiment 1, and includes the following steps.

[0154] Step 10, assemble the concrete box modules in the transverse direction (i.e. horizontal direction) to form a first layer of modules.

[0155] Step 11, insert a steel bar lapping structure into the shear wall membrane cavity of the first layer of modules, with the first end of the steel bar lapping structure inserted into the shear wall membrane cavity and the second end of the steel bar lapping structure extending upwardly out of the first layer of modules.

[0156] Specifically, the steel bar lapping structure includes the spiral stirrups, connecting steel bars and the like described in Embodiment 2.

[0157] Step 12, cast the first layer of modules.

[0158] Step 13, stack a second layer of modules above the first layer of modules and insert the second end of the steel bar lapping structure into the shear wall membrane cavity of the second layer of modules.

[0159] Step 14, repeat steps 11 to 13 with the second layer of modules as the first layer of modules.

[0160] It should be understood that the above description of specific embodiments of the present application is merely intended for the purpose of illustrating the technical route and features of the present application, and its purpose is to enable those skilled in the art to understand the content of the present application and to implement it, but the present application is not limited to the above specific embodiments. Any changes or modifications made within the scope of the claims of the present application should be covered within the protection scope of the present application.

Claims

1. A concrete box-type module, characterized in that, It includes a module base plate, a module top plate (1), a beam mold shell (61), and a first precast wall (2), a first post-cast wall (3), a second precast wall (4), and a second post-cast wall (5) connected sequentially around the edge of the module top plate. The first precast wall (2) and the second precast wall (4) are arranged opposite to each other, and the first post-cast wall (3) and the second post-cast wall (5) are arranged opposite to each other. When either the first precast wall (2) or the second precast wall (4) is used as an interior wall of the module, it includes a partition wall and a first formwork shell (41) or a second formwork shell (42) of a T-shaped shear wall connected to the partition wall; the first formwork shell (41) of the T-shaped shear wall has a third straight section (411) and a fourth straight section (412) that are cast and connected into an L shape respectively, and a third steel mesh (43) is laid on the side of the third straight section (411) facing away from the interior of the module, and the two ends of the third steel mesh (43) are fixedly connected to the third edge steel reinforcement group (47) and the fourth edge steel reinforcement group (48) respectively. 3) A third truss (44) extending along the height of the wall is fixedly connected between the third and fourth edge steel reinforcement groups. The first end of the third truss (44) is inserted into the first formwork shell (41) of the T-shaped shear wall. The second end of the third truss (44) faces the outside of the module and is fixed with a mounting nut (241). The second formwork shell (42) of the T-shaped shear wall has a fifth straight part (421) and a sixth straight part (422) that are cast and connected into an L shape. The side of the fifth straight part (421) facing away from the inside of the module is covered with a fourth steel mesh (45). A through hole (222) is opened on the fifth straight part (421). The first T-shaped shear wall formwork (41) on the first module and the second T-shaped shear wall formwork (42) on the second module are spliced ​​together to form a T-shaped shear wall formwork. In the T-shaped shear wall formwork, the T-shaped mounting bolt (242) is threadedly connected to the mounting nut (241) through the through hole (222). The top of the shear wall formwork is connected to the edge of the module top plate (1), the top of the partition wall is connected to the edge of the module top plate (1) through the beam formwork (61), the top of the first post-cast wall (3) is connected to the edge of the module top plate (1), and the top of the second post-cast wall (5) is connected to the edge of the module top plate (1); the bottom of the shear wall formwork is connected to the edge of the module bottom plate, the bottom of the partition wall is connected to the edge of the module bottom plate, the bottom of the first post-cast wall (3) is connected to the edge of the module bottom plate, and the bottom of the second post-cast wall (5) is connected to the edge of the module bottom plate; the thickness of the beam formwork (61) is within 30mm, and the thickness of the shear wall formwork is within 30mm.

2. The concrete box-type module according to claim 1, characterized in that, When the first precast wall (2) is used as the outer wall of the module, the first precast wall (2) includes an L-shaped shear wall first formwork (21) and an L-shaped shear wall second formwork (22) arranged opposite to the L-shaped shear wall first formwork (21). Both the L-shaped shear wall first formwork (21) and the L-shaped shear wall second formwork (22) are connected to the partition wall. The side of the L-shaped shear wall first formwork (21) facing the inside of the module serves as the inner surface of the module, and the side of the L-shaped shear wall second formwork (22) facing away from the inside of the module serves as the outer surface of the module. On the side of the first formwork shell (21) of the L-shaped shear wall facing away from the interior of the module, there is a first steel mesh (23) for connecting two adjacent edge steel reinforcement groups (27, 28). The first steel mesh (23) is fixedly connected to a first truss (24) extending along the height direction of the shear wall at the position between the two adjacent edge steel reinforcement groups (27, 28). The first truss (24) is in the shape of a steel mesh. The first end of the first truss (24) is inserted into the first formwork shell (21) of the L-shaped shear wall to fix the first steel mesh (23) on the first formwork shell (21) of the L-shaped shear wall. The second end of the first truss (24) is set facing the second formwork shell (22) of the L-shaped shear wall. The second formwork shell (22) of the L-shaped shear wall has a second steel mesh (25) for connecting two adjacent edge steel reinforcement groups (27, 28) on the side facing the inside of the module. The second steel mesh (25) is fixedly connected to a second truss (26) extending along the height direction of the shear wall at the position between the two adjacent edge steel reinforcement groups (27, 28). The second truss (26) is a triangular truss. The first end of the second truss (26) is inserted into the second formwork shell (22) of the L-shaped shear wall to fix the second steel mesh (25) on the second formwork shell (22) of the L-shaped shear wall. The second end of the second truss (26) is set towards the first formwork shell (21) of the L-shaped shear wall.

3. The concrete box-type module according to claim 2, characterized in that, The second formwork of the L-shaped shear wall is provided with an installation groove (221) and a through hole (222) that are connected sequentially from the outside to the inside. The second end of the first truss (24) is fixedly provided with an installation nut (241), and the installation nut (241) corresponds to the position of the through hole (222). The second formwork of the L-shaped shear wall is embedded with wire mesh (223) and multiple supporting steel plates (224). The multiple supporting steel plates (224) are arranged sequentially and spaced apart in the horizontal direction. The supporting steel plates (224) are set at the positions corresponding to the installation grooves (221). The supporting steel plates (224) are located inside the installation grooves (221). Through holes (222) are opened on the supporting steel plates (224). The supporting steel plates (224) are welded to the wire mesh (223). Casting holes (225) are opened between adjacent through holes (222) on the supporting steel plates (224). The shank of the T-mount bolt (242) can pass through the through hole (222) and be threaded to the mounting nut (241), and the head of the T-mount bolt (242) is accommodated in the mounting groove (221).

4. The concrete box-type module according to claim 1, characterized in that, The third truss (44) is made of steel mesh.

5. The concrete box-type module according to claim 1, characterized in that, The fourth steel mesh (45) is fixedly connected to the third and fourth edge steel reinforcement groups (48) with a fourth truss (46) extending along the height direction of the shear wall. The first end of the fourth truss (46) is inserted into the second formwork (42) of the T-shaped shear wall to fix the fourth steel mesh (45) on the second formwork (42) of the T-shaped shear wall. The second end of the fourth truss (46) is set facing the outside of the module.

6. The concrete box-type module according to claim 1, characterized in that, The second formwork shell (42) of the T-shaped shear wall is provided with an installation groove (221) and a through hole (222) that are connected sequentially from the outside to the inside; the first formwork shell (41) and the second formwork shell (42) of the T-shaped shear wall are spliced ​​together to form the T-shaped shear wall formwork. The screw of the T-shaped mounting bolt (242) can pass through the through hole (222) and be threadedly connected to the mounting nut (241), and the head of the T-shaped mounting bolt (242) is accommodated in the installation groove (221).

7. The concrete box-type module according to claim 1, characterized in that, The beam mold shell (61) is used to splice with the beam mold shell (61) of the previous box module to form a beam mold; The beam mold shell (61) has mounting holes. After the beam mold shell (61) is spliced ​​with the beam mold shell (61) of the previous box module to form a beam mold, the mounting holes correspond to the mounting holes on the beam mold shell (61) of the previous box module. The tie bolts (63) can pass through the two mounting holes in sequence and be fastened to the beam mold by the tie nuts.

8. A method for producing a concrete box-type module as described in any one of claims 1 to 7, comprising: S1. Install the first precast wall (2) and the second precast wall (4) on the first and second sides of the mold inside the module, respectively. S2. The first steel cage and the second steel cage are installed on the third and fourth sides of the mold inside the module, respectively. The two ends of the first steel cage are respectively connected with the first precast wall (2) and the second precast wall (4) to form a steel reinforcement lap structure. The two ends of the second steel cage are respectively connected with the first precast wall (2) and the second precast wall (4) to form a steel reinforcement lap structure. S3. Install the precast module top plate (1) on the top of the mold inside the module. The top of the first precast wall (2), the top of the second precast wall (4), the top of the first steel cage, and the top of the second steel cage respectively cooperate with the edge of the precast module top plate (1) corresponding to their positions to form a steel reinforcement lap structure. S4. Install the module outer mold at the positions corresponding to the first steel cage, the second steel cage, and the steel lap structure to form the first pouring cavity; pour concrete into the first pouring cavity to form a five-sided module; S5. After the pentahedral module has reached a certain strength, the mold of the cast-in-place wall is removed, and then the bottom plate reinforcement is tied on the bottom mold plate. Finally, the module bottom plate is poured to form a complete hexahedral module.

9. The method for producing concrete box-type modules according to claim 8, characterized in that, S1 also includes the production process of L-shaped shear wall formwork: A01. A first steel mesh (23), a second steel mesh (25), a first edge steel reinforcement group (27), a second edge steel reinforcement group (28), a first truss (24), and a second truss (26) are formed by automated welding. The two ends of the first steel mesh (23) are connected to the first edge steel reinforcement group (27) and the second edge steel reinforcement group (28) respectively by automated welding. The first end of the first truss (24) is connected to the first steel mesh (23). The first end of the second truss (26) is connected to the second steel mesh (25). Concrete is poured into the straight first mold, second mold, and third mold respectively. A02. Before the concrete in the first mold is solidified, the first end of the first truss (24) is pressed into the concrete, and the first steel mesh (23) is located above the concrete. After demolding, the first precast component is formed. Before the concrete in the second mold is solidified, the first end of the second truss (26) is pressed into the concrete, and the second steel mesh (25) is located above the concrete. After demolding, the second precast component is formed. Before the concrete in the third mold is solidified, the first steel bar group is pressed into the concrete. After demolding, the third precast component is formed. A03. Connect the first end of the third prefabricated component to the second end of the first prefabricated component to form an L-shape. Set the first prefabricated component and the second prefabricated component face to face. Connect the second end of the first truss (24) to the second steel mesh (25) by automated welding. Connect the two ends of the second steel mesh (25) to the first edge steel bar group (27) and the second edge steel bar group (28) respectively to obtain the L-shaped shear wall formwork.

10. The method for producing concrete box-type modules according to claim 8, characterized in that, Before S1, the production processes of the first T-shaped shear wall formwork (41) and the second T-shaped shear wall formwork (42) also include: B01. The third steel mesh (43), the third truss (44), the fourth steel mesh (45), the fourth truss (46), the third edge steel reinforcement group (47), and the fourth edge steel reinforcement group (48) are formed by automated welding. The third edge steel reinforcement group (47) and the fourth edge steel reinforcement group (48) are connected to the two ends of the third steel mesh (43) by automated welding, the first end of the third truss (44) is connected to the third steel mesh (43), and the first end of the fourth truss (46) is connected to the fourth steel mesh (45). Concrete is poured into the straight fourth formwork, fifth formwork, sixth formwork, and seventh formwork respectively. B02. Before the concrete in the fourth formwork is solidified, the first end of the third truss (44) is pressed into the concrete, and the third steel mesh (43) is located above the concrete. After demolding, the first wall formwork is formed. Before the concrete in the fifth formwork is solidified, the first end of the fourth truss (46) is pressed into the concrete, and the fourth steel mesh (45) is located above the concrete. After demolding, the second wall formwork is formed. Before the concrete in the sixth formwork is solidified, the tie bars of the second steel reinforcement group are pressed into the concrete. After demolding, the third wall formwork is formed. Before the concrete in the seventh formwork is solidified, the tie bars of the third steel reinforcement group are pressed into the concrete. After demolding, the fourth wall formwork is formed. Step B03: Connect the second end of the first wall formwork to the first end of the third wall formwork to form an L-shape, thereby obtaining the first formwork shell of the T-shaped shear wall (41); connect the second end of the second wall formwork to the first end of the fourth wall formwork to form an L-shape, thereby obtaining the second formwork shell of the T-shaped shear wall (42).

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