Modular building and method of construction thereof

Abstract

The application discloses a kind of modular building and its construction method, prefabricated part in module unit is completed production in factory, same floor adjacent module unit is formed into whole by post-cast module superposed column, module superposed beam one, module superposed beam two or post-cast superposition layer of module shear wall or roof, and upper and lower layer module is formed into whole by module superposed column inner through force steel bar connection and reserved vertical hole post-cast concrete, and modular building is formed frame structure or frame-shear wall structure by different module unit assembly.Compared with prior art, the modular unit of the application can be assembled to form frame-shear wall structure, which significantly improves the lateral stiffness of modular building, effectively improves the applicable height and seismic performance of modular building;upper and lower layer module is reliably connected by module superposed column inner through force steel bar connection and reserved vertical hole post-cast, which optimizes the node connection structure, reliable force transmission and clear path, simple structure and convenient construction.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building, and particularly relates to a modular building and a construction method thereof. BACKGROUND

[0002] Modular buildings use factory prefabricated modules and efficient assembly on site, providing an industrialized, green, and standardized construction method. Its core advantage is to reduce on-site wet work through factory prefabrication, thereby significantly improving construction efficiency, shortening construction period, and reducing environmental pollution and carbon emissions on site, in line with the development trend of green buildings and low-carbon buildings. With the increasing market demand, the application prospect of modular buildings is broad, especially in rapid construction and low-carbon economy.

[0003] There are some problems in the application of existing modular buildings that need to be solved, mainly focusing on structural performance and construction technology. First, the overall lateral stiffness of existing modular buildings is low, and the seismic performance is poor, which limits its applicable height and makes it difficult to meet the needs of high-rise buildings and high seismic fortification intensity areas. Second, the connection node design of existing modular buildings is complex, and the construction process requires high technical precision, increasing the construction difficulty and affecting the efficiency and quality of on-site assembly. More importantly, the stiffness, bearing capacity, and force transmission path of the core area of the existing modular building nodes are not clear and the force transmission efficiency is low, which leads to poor integrity and seismic performance of the overall structure. In order to improve the promotion and application level of modular buildings, it is urgent to develop a modular building and a construction method thereof to solve the problems of low lateral stiffness, poor seismic performance, unclear force transmission path, complex node connection, on-site construction difficulty, limited applicable height, etc. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide a modular building and a construction method thereof to solve the problems of low lateral stiffness, poor seismic performance, unclear force transmission path, complex node connection, on-site construction difficulty, and limited applicable height of existing modular buildings.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions.

[0006] The modular building is formed by any one, two or three combinations of three types of module units, the module units including several of module composite columns, module composite beams one, module composite beams two and module shear walls, the length of the module composite beams one being along the X direction, the length of the module composite beams two and the module shear walls being along the Y direction; wherein, the module unit one is composed of four module composite columns, two module composite beams one, two module composite beams two and a roof; the module unit two is composed of four module composite columns, two module composite beams one, one module composite beam two, one module shear wall and a roof; the module unit three is composed of four module composite columns, two module composite beams one, two module shear walls and a roof.

[0007] In one embodiment, the module composite column includes a prefabricated column body, a force longitudinal reinforcement and a steel joint; the prefabricated column body is provided with a vertical hole, the force longitudinal reinforcement is arranged through the vertical hole and extends out of the top of the vertical hole, the upper and lower force longitudinal reinforcements are reliably connected through the steel joint, wherein the top extension length of the force longitudinal reinforcement is different; the vertical hole is composed of an outer vertical hole adjacent to the module composite beam one and an inner vertical hole away from the module composite beam one; the force longitudinal reinforcement includes a main force longitudinal reinforcement and a structural force longitudinal reinforcement, the main force longitudinal reinforcement is arranged in the outer vertical hole, and the structural force longitudinal reinforcement is arranged in the inner vertical hole.

[0008] In one embodiment, a groove is arranged in the node core area of the module composite column, the grooves of the adjacent module composite columns in the same layer are connected and post-poured concrete or grouting material is formed into an integral whole.

[0009] In one embodiment, the module composite beam one includes a prefabricated beam body one, a post-poured composite layer two and a top reinforcement one, the top reinforcement one penetrating the post-poured composite layer two of the adjacent module composite beam one in the same layer and the post-poured composite layer one of the adjacent module composite column in the same layer;

[0010] The module composite beam two includes a prefabricated beam body two, a post-poured composite layer three and a top reinforcement two, the top reinforcement two penetrating the module composite beam two along the length direction of the module composite beam two, and the end of the top reinforcement two extending into the post-poured composite layer one of the adjacent module composite column in the same layer;

[0011] The wall thickness of the module shear wall is smaller than that of the ordinary shear wall, the longitudinal reinforcement of the module shear wall is a structural reinforcement, and the longitudinal reinforcements of the module shear walls of the adjacent module units in the upper and lower layers are not connected.

[0012] In one embodiment, the modular building further includes a filler wall, the filler wall being arranged below the module composite beam two.

[0013] In one embodiment, the module shear wall is arranged between two adjacent module composite columns in one module unit, perpendicular to the connecting direction of the module composite columns of adjacent module units in the same layer, and the module composite columns serve as edge concealed columns of the connected module shear walls; the first module composite beam is parallel to the connecting direction of the module composite columns of adjacent module units in the same layer; and the second module composite beam is perpendicular to the connecting direction of the module composite columns of adjacent module units in the same layer.

[0014] In one embodiment, the frame structure or frame-shear wall structure is formed by assembling different module units:

[0015] Only the module unit one is used to form a frame structure.

[0016] Only the module unit three is used to form a frame-shear wall structure.

[0017] The frame-shear wall structure is formed by using a plurality of module unit one and a plurality of module unit two, or a plurality of module unit one and a plurality of module unit three, or a plurality of module unit two and a plurality of module unit three, or a plurality of module unit one, a plurality of module unit two and a plurality of module unit three.

[0018] The application also provides a construction method of the modular building, and the steps are as follows:

[0019] Step 1, factory prefabrication

[0020] According to different module units, the production of corresponding parts of the prefabricated column body of the module composite column, the prefabricated beam body one of the first module composite beam, the prefabricated beam body two of the second module composite beam and the prefabricated shear wall body of the module shear wall is completed in the factory.

[0021] Step 2, assembly construction of module units in the same layer

[0022] The module units in the same layer are hoisted and positioned at the construction site, the top bar one of the first module composite beam penetrates the post-cast composite layer two of adjacent first module composite beams in the same layer and the post-cast composite layer one of adjacent module composite columns in the same layer; after assembly, the post-cast composite layer of the module units in the same layer is integrally poured to form the module units in the same layer as a whole.

[0023] Step 3, assembly construction of module units in the upper and lower layers

[0024] The module units in the upper layer are hoisted and positioned at the construction site, the stress longitudinal reinforcement of the module composite columns in the upper and lower layers is connected by using a reinforcement joint, and the vertical hole of the module composite column is poured to form the module units in the upper and lower layers as a whole.

[0025] In one embodiment, when the filler wall is arranged, the filler wall is arranged below the second module composite beam in the step 2.

[0026] In one embodiment, when the top plate is arranged to be a prefabricated composite plate, the prefabricated top plate in step 1 is collectively produced with other components of the module unit in a factory, and in step 2, the post-cast composite layer of the top plate is integrally cast and formed with other post-cast composite layers; when the top plate is arranged to be made on site, the top plate is integrally cast and formed with other post-cast composite layers in step 2.

[0027] Compared with the prior art, the beneficial effects of the present application are:

[0028] 1) The modular unit of the present application can be assembled to form a frame-shear wall structure, which significantly improves the lateral stiffness of the modular building and effectively improves the applicable height and seismic performance of the modular building.

[0029] 2) The upper and lower modules of the present application are reliably connected through the through load-bearing steel bars in the module composite column and the reserved vertical hole post-cast, which optimizes the node connection structure, reliably transmits force, clearly shows the path, is simple in structure and convenient in construction.

[0030] 3) The module composite column of the present application serves as an edge hidden column of the connected module shear wall, so that the longitudinal steel bars in the adjacent module shear walls of the upper and lower layers can be not connected, and the thickness of the module shear wall can be smaller than that of the ordinary shear wall, which can simplify the end connection structure of the shear wall, save materials, increase indoor space, reduce cost and reduce construction difficulty under the premise of ensuring the stress performance of the module. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1 It is a three-dimensional schematic view of a module unit structure of the present application.

[0033] Figure 2 It is a three-dimensional schematic view of a module unit structure of the present application.

[0034] Figure 3 It is a three-dimensional schematic view of a module unit structure of the present application.

[0035] Figure 4 It is a three-dimensional schematic view of a modular frame structure in the embodiment of the present application (only module unit one is used)

[0036] Figure 5Three-dimensional schematic diagram of the modular frame-shear wall structure in the embodiment of the present application (only using module unit three).

[0037] Figure 6 Three-dimensional schematic diagram of the modular frame-shear wall structure in the embodiment of the present application (including module unit two).

[0038] Figure 7 Three-dimensional schematic diagram of the module composite column in the embodiment of the present application.

[0039] Figure 8 Top view of the module composite column in the embodiment of the present application.

[0040] Figure 9 Three-dimensional schematic diagram of the module composite column node core area in the embodiment of the present application.

[0041] Figure 10 Three-dimensional schematic diagram of the module composite beam one in the embodiment of the present application.

[0042] Figure 11 Three-dimensional schematic diagram of the module composite beam two in the embodiment of the present application.

[0043] Figure 12 Three-dimensional schematic diagram of the full prefabricated shear wall in the embodiment of the present application.

[0044] Figure 13 Three-dimensional schematic diagram of the prefabricated composite hollow shear wall in the embodiment of the present application.

[0045] In the figure:

[0046] 1-module composite column; 11-vertical hole; 111-outer vertical hole; 112-inner vertical hole; 12-longitudinal force bar; 121-main force bar; 122-structural force bar; 13-steel bar joint; 14-groove; 15-prefabricated column body; 16-post-cast composite layer one; 2-module composite beam one; 21-top bar; 22-post-cast composite layer two; 23-prefabricated beam body one; 3-module composite beam two; 31-prefabricated beam body two; 32-post-cast composite layer three; 4-module shear wall; 41-longitudinal steel bar; 42-prefabricated shear wall body; 43-post-cast composite layer four; 44-full prefabricated shear wall; 45-prefabricated composite hollow shear wall; 5-module unit one; 6-module unit two; 7-module unit three; 8-filling wall; 9-top plate. DETAILED DESCRIPTION

[0047] The embodiments of the present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0048] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0050] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0054] The current modular building still needs to be improved in overall lateral stiffness, seismic performance, applicable height, construction difficulty, etc. Based on this, the present application provides a modular building which is composed of any one, two or three combinations of three types of module units.

[0055] Reference Figure 1 , Figure 2 and Figure 3As shown, the three types of module units of the present application are module unit one 5, module unit two 6 and module unit three 7. Each module unit further includes several of the module composite column 1, the module composite beam one 2, the module composite beam two 3 and the module shear wall 4. For ease of description, the present application defines the module composite beam one 2 as a beam with length along the X direction, the module composite beam two 3 as a beam with length along the Y direction, and the module shear wall 4 as a wall with length along the Y direction. The definition of the XY direction is shown in Figure 1 、 Figure 2 and Figure 3 .

[0056] Specifically, the module unit one 5 is composed of four module composite columns 1, two module composite beams one 2, two module composite beams two 3 and one roof 9, as shown in Figure 1 , i.e. the module unit one 5 has no module shear wall 4. The module unit two 6 is composed of four module composite columns 1, two module composite beams one 2, one module composite beam two 3, one module shear wall 4 and one roof 9, as shown in Figure 2 , i.e. the module unit two 6 has only one module composite beam two 3 and one module shear wall 4, and the module shear wall 4 is arranged on the side without the module composite beam two 3. The module unit three 7 is composed of four module composite columns 1, two module composite beams one 2, two module shear walls 4 and one roof 9, i.e. the module unit three 7 has no module composite beam two 3.

[0057] The Y-direction lateral stiffness of each type of module unit of the present application: module unit one 5 < module unit two 6 < module unit three 7.

[0058] According to the above module units, different module units of the present application can be assembled with each other to form a frame structure or a frame-shear wall structure, and typical combinations are as follows:

[0059] Combination one: only module unit one 5 is used to form a frame structure, as shown in Figure 4 . Compared with the previous modular frame structure, the frame structure of the present application has simple module composite column joint structure, clear force transmission path, good integrity and convenient construction.

[0060] Combination two: only module unit three 7 is used to form a frame-shear wall structure, as shown in Figure 5 . The frame-shear wall structure has good overall lateral stiffness and seismic performance, and the applicable height is higher than that of the existing modular frame structure. According to this combination, when each module unit is assembled along the X direction, the lateral stiffness in the Y direction is weak, and the lateral stiffness in the Y direction can be improved by adding the module shear wall 4 along the Y direction, thereby effectively improving the applicable height of the modular building.

[0061] The remaining combinations, i.e. introducing module unit two 6, are combined with the remaining module units, as shown in Figure 6For example, a combination of several module units one 5, several module units two 6, or a combination of several module units one 5, several module units three 7, or a combination of several module units two 6, several module units three 7, or a combination of several module units one 5, several module units two 6, and several module units three 7 can be adopted. These combinations form a frame-shear wall structure. In these combinations, the advantages of the aforementioned combination one and combination two are combined.

[0062] According to the combination of the present application, the frame structure is suitable for a multi-story building with a low height, and when the shear wall is arranged, a frame-shear wall structure is formed, the Y-direction rigidity of the modular building is increased, and the multi-story building with a high height is suitable, which breaks through the height limit.

[0063] The prefabricated parts of the module superposed column 1, the module superposed beam one 2, the module superposed beam two 3, or the module shear wall 4 in each module unit of the present application are all produced in a factory; the top plate 9 is made of a prefabricated superposed plate or is made on a construction site, and when the prefabricated superposed plate is adopted, the prefabricated part of the prefabricated superposed plate is also produced in a factory. Therefore, the on-site construction link is greatly reduced, and the construction difficulty is reduced.

[0064] In further embodiments of the present application, with reference to Figure 1 、 Figure 2 、 Figure 3 and Figure 7 shown, the module superposed column 1 includes a prefabricated column body 15, a stress longitudinal reinforcement 12, and a steel bar joint 13. Among them, a vertical hole 11 is arranged in the prefabricated column body 15, and the vertical hole 11 includes but is not limited to a shaped channel, which can adopt a form of a weldable thin-walled metal pipeline, a plastic pipeline, or a core-pulling hole forming. The stress longitudinal reinforcement 12 is arranged through the vertical hole 11 and extends out of the top of the vertical hole 11, and is reliably connected to the stress longitudinal reinforcement 12 of the module superposed column 1 of the module unit of the upper layer through the steel bar joint 13. For example, the vertical hole 11 is provided as at least two, and is preferentially arranged symmetrically along the column axis, and the top extension lengths of the stress longitudinal reinforcements 12 of different vertical holes 11 are preferentially arranged as different lengths, so that the steel bar joints 13 of the stress longitudinal reinforcements 12 of the upper and lower layers are not at the same height, the connection performance is improved, the number of longitudinal reinforcements for alignment is reduced, the construction process is simplified, and the construction difficulty is reduced.

[0065] For example, when the cross section of the module composite column 1 is square, the vertical holes 11 can be four, and are defined as outer vertical holes 111 and inner vertical holes 112, wherein the vertical holes 11 adjacent to one side of the module composite beam 2 are defined as the outer vertical holes 111, and the vertical holes 11 away from one side of the module composite beam 2 are defined as the inner vertical holes 112. At the same time, the stress reinforcement 12 is defined as two types of main stress reinforcement 121 and structural stress reinforcement 122, wherein the main stress reinforcement 121 is arranged in the outer vertical hole 111, and the structural stress reinforcement 122 is arranged in the inner vertical hole 112. At this time, the main stress reinforcement 121 in the two module composite columns 1 adjacent to the same layer bears the main load, and the diameter of the structural stress reinforcement 122 can be reduced to save materials and reduce costs.

[0066] In further embodiments of the application, referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 、 Figure 8 and Figure 9 , the node core area of the module composite column 1 is provided with a groove 14, which is a notch structure at the top of the prefabricated column 15, and the grooves 14 of the adjacent module composite columns 1 in the same layer are connected and post-poured to form a whole. In this embodiment, by designing the groove 14 at the top of the prefabricated column 15, the node core area of the adjacent module units in the same layer is integrally poured, ensuring that the node core area of the assembled modules bears force together and improving the node stress performance.

[0067] Further preferably, the gap between the grooves 14 of the adjacent module composite columns 1 in the same layer is the same as the installation gap of the module composite column 1 of the adjacent module unit, and is usually not more than 2 cm. Different materials can be selected for pouring according to actual engineering needs, including ordinary concrete, ultra-high performance concrete or high-strength grouting material, etc., to ensure the stress performance of the node core area.

[0068] Further preferably, considering the transmission of beam end shear force in the node core area, to enhance the interfacial shear bearing capacity of the post-poured composite layer 16 of the module composite column 1 and the prefabricated column 15, the interface between the post-poured composite layer 16 and the side surface of the groove 14 is preferably a rough surface or a key groove, and a naturally formed surface can also be used.

[0069] In further embodiments of the application, referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 9 and Figure 10As shown, the module composite beam one 2 includes a precast beam body one 23, a post-cast composite layer two 22, and a top bar 21. The top bar 21 penetrates the post-cast composite layer two 22 of the adjacent module composite beam one 2 in the same layer and the post-cast composite layer one 16 of the adjacent module composite column 1 in the same layer. It is easy to understand that the basic steel cage structure such as longitudinal bars and stirrups can also be designed in the module composite beam one 2 according to the needs.

[0070] In further embodiments of the present application, with reference to Figure 1 、 Figure 2 、 Figure 3 and Figure 11 As shown, the module composite beam two 3 includes a precast beam body two 31, a post-cast composite layer three 32, and a top bar two 33. The top bar two 33 penetrates the module composite beam two 3 along the length direction of the module composite beam two 3, and the end thereof extends into the post-cast composite layer one 16 of the module composite column. It is easy to understand that the basic steel cage structure such as longitudinal bars and stirrups can also be designed in the module composite beam two 3 according to the needs. Further, to enhance anchoring, an anchoring plate can be arranged at the end of the top bar two 33 extending into the post-cast composite layer one 16.

[0071] In further embodiments of the present application, the module shear wall 4 of the present application includes but is not limited to a full precast shear wall 44, a precast composite hollow shear wall 45, a precast double-face composite shear wall, a composite shear wall with one side membrane shell, etc. The appropriate shear wall can be selected according to the local conditions, in combination with the structural construction, vertical connection, overall weight of the module, etc.

[0072] Figure 12 The structure of the full precast shear wall 44 is shown, which includes a precast shear wall body 42 and a post-cast composite layer four 43, and the longitudinal bars 41 extend from the precast shear wall body 42 into the post-cast composite layer four 43.

[0073] Figure 13 The structure of the precast composite hollow shear wall 45 is shown, which includes a precast shear wall body 42 and a post-cast composite layer four 43, and the longitudinal bars 41 extend from the precast shear wall body 42 into the post-cast composite layer four 43, and vertical holes are arranged through the height. The construction difficulty of the upper and lower horizontal joints of the existing full precast wall is large, and the horizontal joints of the precast composite hollow shear wall can be realized by pouring through the vertical holes.

[0074] With reference to Figure 1 、 Figure 2 、 Figure 3 、 Figure 12 and Figure 13As shown, various forms of module shear wall 4, including longitudinal reinforcement 41, which can be used in the construction of reinforcement. In further embodiments of the application, the module shear wall 4 is provided between two adjacent module composite columns 1 in a module unit, perpendicular to the connection direction of the adjacent module composite columns 1 in the same layer of the module unit, and the module composite column 1 serves as the edge hidden column of the connected module shear wall 4, so that the upper and lower adjacent longitudinal reinforcement 41 can not be connected, and the thickness of the module shear wall 4 can be smaller than the thickness of the ordinary shear wall, generally 100-120mm, which can simplify the shear wall end connection structure, save materials, increase indoor space, reduce cost and construction difficulty. Module composite beam one 2 is parallel to the connection direction of the adjacent module composite columns 1 in the same layer of the module unit; module composite beam two 3 is perpendicular to the connection direction of the adjacent module composite columns 1 in the same layer of the module unit. Among them, there is a splicing joint between the adjacent module composite beam two 3, the adjacent module composite beam two 3 and the module shear wall 4 or the adjacent module shear wall 4 in the same layer, and the width of the splicing joint is usually not more than 2cm, which can effectively prevent the leakage of cement slurry during pouring, simplify the construction process, reduce the adjustment and repair time, ensure the pouring quality, improve the construction efficiency, reduce the material and labor cost, and ensure the close connection between the modules, reduce the influence of the gap on the overall structure.

[0075] In further embodiments of the application, the modular building further comprises a filler wall 8, which can be provided below the module composite beam two 3, including but not limited to autoclaved sand aerated concrete board, foamed cement board, foamed particle concrete board, light steel keel, block, etc.

[0076] According to the structure of the modular building of the application, the construction difficulty is greatly reduced, and the main construction steps are as follows:

[0077] Step 1, module unit one 5, module unit two 6, module unit three 7 explain the prefabrication steps of the module unit factory.

[0078] Module unit one 5, complete the production of the prefabricated column body 15 of the module composite column 1, the prefabricated beam body one 23 of the two module composite beam one 2 and the prefabricated beam body two 31 of the two module composite beam two 3 in the factory;

[0079] Module unit two 6, complete the production of the prefabricated column body 15 of the four module composite columns 1, the prefabricated beam body one 23 of the two module composite beams one 2, the prefabricated beam body two 31 of the one module composite beam two 3 and the prefabricated shear wall body 42 of the one module shear wall 4 in the factory;

[0080] Module unit three 7, complete the production of the prefabricated column body 15 of the four module composite columns 1, the prefabricated beam body one 23 of the two module composite beams one 2 and the prefabricated shear wall body 42 of the two module shear walls 4 in the factory.

[0081] Further, the various types of module units of the present application can be integrally processed and cast in the factory, or the wall panels, columns, beams, and roof panels can be separately prefabricated and then assembled into modules in the factory.

[0082] This step is the basis of the construction process. Before the binding operation is implemented, all steel materials must be strictly checked to ensure that they meet the design specifications, including size specifications, quantity configuration, and strength grade. The surface of the steel must be kept clean to prevent rust and impurities from contaminating it to ensure the quality of the connection. The design of the steel cage must take into account its load-carrying capacity and seismic performance to ensure that the concrete has sufficient strength and stability after pouring.

[0083] The core task of this step is to implement the pouring operation of the prefabricated module. During the construction process, the flow characteristics of the poured material must be accurately controlled to prevent material separation and bubble formation. After pouring is complete, the poured material must be vibrated using a vibrating device to remove internal bubbles and increase its density. Proper curing is required after pouring to maintain a suitable humidity environment, thereby avoiding the occurrence of cracks and ensuring that the strength meets the standards.

[0084] Step 2: Same-layer module unit assembly construction.

[0085] The same-layer module units are hoisted into place at the construction site, and the top reinforcement 21 of the module composite beam 2 is placed so that it can penetrate the post-cast composite layer 22 of the same-layer adjacent module composite beam 2 and the post-cast composite layer 16 of the same-layer adjacent module composite column 1. By threading the top reinforcement 21, the reliability of the structural connection is ensured, and the overall integrity of the structure is improved. This step can be performed after the same-layer module units are assembled, and the post-cast composite layer of the same-layer module is integrally poured to form the overall same-layer module unit. After pouring is complete, sufficient curing is required to ensure the strength performance of the poured material and the overall stability of the structure.

[0086] When the filler wall 8 is set, the construction of the filler wall 8 also needs to be completed in this step. Specifically, the filler wall 8 is set below the module composite beam 3 in this step.

[0087] Further, this step requires the joints between the same-layer adjacent module units to be sealed, for example, using a sealant or a cover plate as a sealing material to prevent concrete slurry from leaking.

[0088] The core objective of this step is to effectively seal the joints. After the module connection is completed, an appropriate sealant should be selected based on the width of the joint and the design specifications, or a cover plate should be used for covering, to prevent slurry leakage and water infiltration. The use of sealant must ensure the complete sealing of the joint to avoid water infiltration or structural stability problems during subsequent construction or use.

[0089] Step 3: Up-and-down-layer module unit assembly construction.

[0090] In the construction site, the adjacent upper layer module unit is hoisted in place, the upper layer stress longitudinal reinforcement 12 is connected with the stress longitudinal reinforcement 12 in the lower layer module composite column 1 through the steel bar joint 13 one by one, the vertical hole 11 of the module composite column 1 is poured to form the whole of the upper and lower layer module units.

[0091] In this step, the position of the stress longitudinal reinforcement 12 needs to be accurately controlled when hoisting the upper layer module unit to avoid hindering the falling of the upper layer module unit. The leveling bolt can be used to adjust the height of the horizontal joint between the upper layer module unit and the lower layer module unit, and to correct the perpendicularity of the upper layer module unit, so as to lift the stirrup in the bottom horizontal joint to the designed position and bind and fix it with the lower layer stress longitudinal reinforcement 12. Then the bottom horizontal joint is closed, and the post-pouring in the bottom horizontal joint and the vertical hole 11 is completed; finally, the formwork is removed after maintenance, the connection of the upper and lower layer module units is completed, the stress longitudinal reinforcement 12 in the upper and lower layer module composite columns 1, the vertical hole 11 and the post-pouring are formed as a whole, and they bear stress together.

[0092] Since the top plate 9 of the present application can be made of prefabricated composite plate, it can also be made on site. Therefore, when it is made of prefabricated composite plate, it can be produced in the factory together with other prefabricated parts in step 1, and the post-poured composite layer of the top plate 9 is integrally poured and formed with other post-poured composite layers in step 2; when the top plate 9 is made on site, the top plate 9 is integrally poured and formed with other post-poured composite layers in step 2. For example, the non-formwork floor bottom plate or the floor formwork template can be laid on site, and the floor concrete is post-poured.

Claims

1. Modular building, characterized in that, Any one, two or three combinations of three types of module units are formed, the module units include several of module composite column (1), module composite beam one (2), module composite beam two (3) and module shear wall (4), the length of the module composite beam one (2) is along the X direction, the length of the module composite beam two (3) and the module shear wall (4) is along the Y direction;Wherein, the module unit one (5) is composed of four module composite columns (1), two module composite beams one (2), two module composite beams two (3) and a roof (9);The module unit two (6) is composed of four module composite columns (1), two module composite beams one (2), one module composite beam two (3), one module shear wall (4) and a roof (9);The module unit three (7) is composed of four module composite columns (1), two module composite beams one (2), two module shear walls (4) and a roof (9). The module composite column (1) includes a prefabricated column body (15), a stress longitudinal reinforcement (12) and a steel bar joint (13), the prefabricated column body (15) is provided with a vertical hole (11), the stress longitudinal reinforcement (12) is provided in the vertical hole (11) and extends out of the top of the vertical hole (11), the stress longitudinal reinforcement (12) of the upper and lower layers is connected reliably through the steel bar joint (13), wherein the top of the stress longitudinal reinforcement (12) has different extension lengths, the vertical hole (11) is composed of an outer vertical hole (111) adjacent to the module composite beam one (2) and an inner vertical hole (112) away from the module composite beam one (2), the stress longitudinal reinforcement (12) includes a main stress reinforcement (121) and a structural stress reinforcement (122), the main stress reinforcement (121) is arranged in the outer vertical hole (111), and the structural stress reinforcement (122) is arranged in the inner vertical hole (112). The module composite beam one (2) includes a prefabricated beam body one (23), a post-poured composite layer two (22) and a top bar one (21), the top bar one (21) penetrates the post-poured composite layer two (22) of the adjacent module composite beam one (2) and the post-poured composite layer one (16) of the adjacent module composite column (1) in the same layer. The module composite beam two (3) includes a prefabricated beam body two (31), a post-poured composite layer three (32) and a top bar two (33), the top bar two (33) penetrates the module composite beam two (3) along the length direction of the module composite beam two (3), and the end of the top bar two (33) extends into the post-poured composite layer one (16) of the adjacent module composite column (1) in the same layer. The wall thickness of the module shear wall (4) is smaller than that of the ordinary shear wall, the longitudinal reinforcement (41) of the module shear wall (4) is used as structural reinforcement, and the longitudinal reinforcement (41) of the module shear wall (4) of the adjacent module unit in the upper and lower layers is not connected.

2. The modular building of claim 1, wherein, The node core area of the module composite column (1) is provided with a groove (14), the grooves (14) of the adjacent module composite columns (1) in the same layer are connected and post-poured to form a whole.

3. The modular building of claim 1, wherein, The modular building further comprises a filler wall (8) arranged below the second modular composite beam (3).

4. The modular building of claim 1, wherein, The module shear wall (4) is arranged between two adjacent module composite columns (1) in a module unit, perpendicular to the connection direction of the module composite columns (1) of adjacent module units in the same layer, and the module composite columns (1) serve as edge concealed columns of the connected module shear walls (4); the first module composite beam (2) is parallel to the connection direction of the module composite columns (1) of adjacent module units in the same layer; and the second module composite beam (3) is perpendicular to the connection direction of the module composite columns (1) of adjacent module units in the same layer.

5. The modular building of any of claims 1 to 4, wherein, Different module units are assembled to form a frame structure or a frame-shear wall structure: Only the module unit one (5) is used to form a frame structure; Only the module unit three (7) is used to form a frame-shear wall structure; The module unit one (5), the module unit two (6), the module unit three (7), or the module unit one (5), the module unit two (6), and the module unit three (7) are used to form a frame-shear wall structure.

6. The method of constructing a modular building according to any one of claims 1-5, wherein, The steps are as follows: Step 1: factory prefabrication According to different module units, the corresponding parts of the prefabricated column body (15) of the module composite column (1), the prefabricated beam body one (23) of the first module composite beam (2), the prefabricated beam body two (31) of the second module composite beam (3), and the prefabricated shear wall body (42) of the module shear wall (4) are produced in the factory; Step 2: assembly construction of module units in the same layer The module units in the same layer are hoisted and positioned at the construction site, the top bar one (21) of the first module composite beam (2) penetrates the post-cast composite layer two (22) of adjacent first module composite beams (2) in the same layer and the post-cast composite layer one (16) of adjacent module composite columns (1) in the same layer; after assembly, the post-cast composite layers of the module units in the same layer are integrally poured to form a whole; Step 3: assembly construction of module units in the upper and lower layers The module units in the upper and lower layers are hoisted and positioned at the construction site, the stress longitudinal reinforcement (12) of the module composite columns (1) in the upper and lower layers is connected by a reinforcement joint (13), and the vertical hole (11) of the module composite column (1) is poured to form a whole.

7. The method of constructing a modular building according to claim 6, wherein, When the filler wall (8) is arranged, the filler wall (8) is arranged below the second module composite beam (3) in step 2.

8. The method of constructing a modular building according to claim 6, wherein, When the roof (9) is arranged as a prefabricated composite plate, the prefabricated roof and other components of the module unit are collectively produced in the factory in step 1, and the post-cast composite layer of the roof (9) is integrally poured and formed with other post-cast composite layers in step 2; when the roof (9) is made on site, the roof (9) is integrally poured and formed with other post-cast composite layers in step 2.

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