A concrete modular building

Abstract

The utility model relates to the technical field of modularization building, especially a concrete modularization building, the utility model discloses a modularization steel frame and connecting assembly, the bottom of upper column and the top of lower column each embed a modularization steel frame, and the outer wall of two modularization steel frames is the bottom outer wall of upper column and the top outer wall of lower column respectively, the connecting assembly is covered and embeds two modularization steel frames in the bottom of upper column and the top of lower column, and connecting assembly is fixedly connected with two modularization steel frames, and the inner wall of connecting assembly is attached with the outer wall of two modularization steel frames, to connect upper column and lower column into an integral structure through connecting assembly and two modularization steel frames, embed one modularization steel frame in the bottom of upper column and the top of lower column respectively, and the connecting assembly is fixedly installed on two modularization steel frames, so that the connecting node structure can still realize good bearing performance and deformation coordination ability under the action of vertical load and lateral load.

Description

Technical Field

[0001] This utility model relates to the field of modular building technology, and in particular to a concrete modular building. Background Technology

[0002] With the continuous development of industrialized construction and prefabricated building technologies, modular concrete buildings, as a highly integrated and efficient new type of building, have gradually gained widespread attention and practical application. This type of building system completes the prefabrication and integration of the main structure, interior decoration, and water and electricity pipeline systems in the factory, enabling standardized hoisting and rapid assembly on the construction site. This significantly shortens the construction cycle, improves the stability of project quality, and offers excellent energy-saving and environmental benefits.

[0003] Although modular concrete buildings demonstrate strong system integration and ease of construction in engineering practice, they still face numerous technical challenges in practical applications, particularly regarding structural connection systems. Existing modular concrete buildings are typically assembled from multiple prefabricated modular units. The connection nodes between adjacent modules often struggle to achieve continuous force transmission and reliable connection, leading to uneven stiffness distribution and insufficient seismic performance, thus affecting the building's safety and durability. Especially under seismic loading or complex load conditions, traditional connection methods are prone to weak joints and insufficient load-bearing capacity, limiting the widespread application of modular concrete buildings.

[0004] Therefore, there is an urgent need for a concrete modular building that can improve the load transmission continuity and seismic resistance of modular buildings, and promote its application in a wider range of engineering scenarios. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a modular concrete building that solves the technical problem that the connection nodes between adjacent modules in the existing modular concrete building are difficult to achieve a continuous force distribution, clear force transmission and reliable connection effect, resulting in uneven stiffness distribution and insufficient seismic resistance.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] This utility model provides a modular concrete building, including an upper module and a lower module stacked vertically. The upper module includes an upper column, and the lower module includes a lower column. It also includes a connecting node structure for connecting the upper and lower columns. The connecting node structure includes a modular steel frame and a connecting component. One modular steel frame is pre-embedded at the bottom of the upper column and one at the top of the lower column, with the outer walls of the two modular steel frames being the bottom outer wall of the upper column and the top outer wall of the lower column, respectively. The connecting component covers the two modular steel frames pre-embedded at the bottom of the upper column and the top of the lower column. The connecting component is fixedly connected to the two modular steel frames, and the inner wall of the connecting component is fitted to the outer walls of the two modular steel frames, thereby connecting the upper and lower columns into a single structure through the connecting component and the two modular steel frames.

[0010] Preferably, the modular steel frame includes two vertically arranged and oppositely arranged first steel plates and a plurality of horizontally arranged connecting rods; the two first steel plates are respectively embedded in the front and rear side walls of the upper column or the lower column, so that the opposite side walls of the two first steel plates serve as the front and rear side walls of the bottom of the upper column and the top of the lower column, and the bottom wall of the first steel plate embedded in the upper column is flush with the bottom wall of the upper column, and the top wall of the first steel plate embedded in the lower column is flush with the top wall of the lower column; the plurality of connecting rods are all pre-embedded in the upper column or the lower column, and the two ends of the plurality of connecting rods are respectively fixedly connected to the opposite side walls of the two first steel plates; the connecting assembly is fixedly installed on the opposite outer side walls of the two first steel plates.

[0011] Preferably, the connecting assembly includes two vertically arranged and oppositely arranged second steel plates and two sets of horizontally arranged bolts; the two second steel plates are respectively fixedly installed on the four first steel plates by the two sets of bolts, and each second steel plate is in contact with the two first steel plates on the same side of the upper column and the lower column; each set of bolts has multiple bolts, and the multiple bolts pass through the second steel plates and the first steel plates in sequence and are screwed into the multiple connecting rods one by one, so as to install the second steel plates on the two first steel plates on the same side of the upper column and the lower column.

[0012] Preferably, both ends of the connecting rod are provided with screwing spaces, and the two bolts corresponding to the two ends of the connecting rod are respectively screwed into the two screwing spaces.

[0013] Preferably, the connecting rod is a hollow structure, and two bolts corresponding to the two ends of the connecting rod are respectively screwed into the hollow structure, and the opposite ends of the two bolts can abut against each other.

[0014] Preferably, the outer contour of the second steel plate is consistent with the outer contour formed by the two first steel plates on the same side of the upper column and the lower column.

[0015] Preferably, the outer wall of the second steel plate away from the first steel plate is flush with the outer wall on the same side of the upper column and the lower column.

[0016] Preferably, the lower module further includes a composite beam connected to one side wall of the lower column, and the top wall of the composite beam is flush with the top wall of the lower column; both the top walls of the composite beam and the lower column are cast with a cast-in-place layer to initially connect the upper column and the lower column.

[0017] Preferably, there are two upper modules and two lower modules. The two upper modules are arranged horizontally and adjacent to each other, and the two lower modules are arranged horizontally and adjacent to each other, with the two upper modules and the two lower modules arranged vertically in a one-to-one correspondence. A modular steel frame is pre-embedded at the bottom of two adjacent upper columns of the two upper modules and at the top of two adjacent lower columns of the two lower modules, and the outer walls of the four modular steel frames are the outer walls of the bottom of the two upper columns and the top of the two lower columns, respectively. The connecting component covers the four modular steel frames pre-embedded at the bottom of the two upper columns and the top of the two lower columns. The connecting component is fixedly installed on the four modular steel frames, and the inner wall of the connecting component is in contact with the outer wall of the four modular steel frames, so as to connect the two upper columns and the two lower columns into an integral structure through the connecting component and the four modular steel frames.

[0018] Preferably, a composite beam is connected to the opposite sidewalls of the two lower columns, and the top walls of the two composite beams are flush with the top walls of the two lower columns; a cast-in-place layer is poured on the top walls of the two composite beams and the top walls of the two lower columns to initially correspond and connect the two upper columns and the two lower columns.

[0019] (III) Beneficial Effects

[0020] The beneficial effects of this utility model are:

[0021] This invention involves fixing a modular steel frame at the bottom of the upper column and the top of the lower column, and fixing a connecting component to the two modular steel frames. The connecting component covers the two modular steel frames, and the outer wall of the modular steel frame is tightly fitted with the inner wall of the connecting component. This achieves effective coverage and connection of the modular steel frames on the upper and lower columns, forming a multi-directional constraint structure. This ensures that the connecting node structure can maintain good load-bearing performance and deformation coordination under vertical and lateral loads, thereby improving the load-bearing capacity of the connecting node structure and enhancing its deformation coordination during stress. This makes the connecting node less prone to damage or instability under seismic action or complex loads, significantly improving the overall seismic performance and structural safety of the concrete modular building. Moreover, the connecting components can firmly connect the two modular steel frames into one, thereby achieving a stable connection between the upper and lower columns and forming an integral structure between the upper and lower modules. This effectively ensures the clarity and continuity of the force path between the upper and lower modules. In other words, when the concrete modular building is subjected to external vibration, the force borne by the upper module can be smoothly transmitted to the lower module, avoiding problems such as weak connection nodes and poor force transmission, thereby improving the stiffness uniformity and structural integrity of the entire modular structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a first embodiment of the present invention, a modular concrete building.

[0023] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0024] Figure 3 This is a schematic diagram of the overall three-dimensional disassembly structure of a first embodiment of the present invention, a modular concrete building.

[0025] Figure 4 This is a cross-sectional structural diagram of a modular steel frame, which is an embodiment of a modular concrete building according to this utility model.

[0026] Figure 5 This is a cross-sectional structural diagram illustrating the connection between the modular steel frame and connecting components in an embodiment of a modular concrete building according to this utility model.

[0027] Figure 6 This is a cross-sectional structural diagram of the modular steel frame of a second embodiment of the present invention for a modular concrete building.

[0028] Figure 7 This is a cross-sectional structural diagram illustrating the connection between the modular steel frame and connecting components in a second embodiment of a modular concrete building according to this utility model.

[0029] Figure 8 This is a schematic diagram of the overall three-dimensional structure of a third embodiment of the present invention, a modular concrete building.

[0030] Figure 9 This is a schematic diagram of the overall three-dimensional disassembly structure of a third embodiment of the present invention, which is a modular concrete building.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1: Upper module; 11: Upper column; 2: Lower module; 21: Lower column; 22: Composite beam; 3: Modular steel frame; 31: First steel plate; 32: Connecting rod; 321: Screw space; 4: Connecting component; 41: Second steel plate; 42: Bolt; 5: Cast-in-place layer. Detailed Implementation

[0033] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0034] Example 1

[0035] like Figure 1 As shown, this embodiment of a modular concrete building includes an upper module 1 and a lower module 2 stacked vertically. The upper module 1 includes an upper column 11, and the lower module 2 includes a lower column 21. It also includes a connecting node structure for connecting the upper column 11 and the lower column 21. Figure 2 and Figure 3 As shown, the connection node structure includes modular steel frames 3 and connecting components 4. A modular steel frame 3 is pre-embedded at the bottom of the upper column 11 and the top of the lower column 21, with the outer walls of the two modular steel frames 3 being the bottom outer wall of the upper column 11 and the top outer wall of the lower column 21, respectively. The connecting components 4 cover the two modular steel frames 3 pre-embedded at the bottom of the upper column 11 and the top of the lower column 21. The connecting components 4 are fixedly connected to the two modular steel frames 3, and the inner wall of the connecting components 4 is fitted to the outer walls of the two modular steel frames 3, thereby connecting the upper column 11 and the lower column 21 into a single structure through the connecting components 4 and the two modular steel frames 3.

[0036] By pre-embedding a modular steel frame 3 at the bottom of the upper column 11 and the top of the lower column 21, and fixing the connecting component 4 to the two modular steel frames 3, the connecting component 4 covers the two modular steel frames 3, and the outer wall of the modular steel frame 3 is tightly fitted with the inner wall of the connecting component 4, so as to achieve effective coverage and connection of the modular steel frames 3 on the upper column 11 and the lower column 21 by the connecting component 4, so as to form a multi-directional constraint structure. This allows the connecting node structure to still achieve good load-bearing performance and deformation coordination ability under vertical and lateral loads, thereby improving the load-bearing capacity of the connecting node structure, enhancing the deformation coordination of the connecting node structure during the stress process, and making the connecting node structure less prone to damage or instability under seismic action or complex load action, significantly improving the overall seismic performance and structural safety of the concrete modular building. Moreover, the connecting component 4 can firmly connect the two modular steel frames 3 into one, thereby achieving a stable connection between the upper column 11 and the lower column 21, making the upper module 1 and the lower module 2 form an integral structure, so as to effectively ensure the clarity and continuity of the force path between the upper module 1 and the lower module 2. That is, when the concrete modular building is subjected to external vibration, the force borne by the upper module 1 can be smoothly transmitted to the lower module 2, avoiding problems such as weak connection nodes and poor force transmission, thereby improving the stiffness uniformity and structural integrity of the entire modular structure.

[0037] Furthermore, such as Figure 3As shown, the modular steel frame 3 includes two vertically arranged and oppositely positioned first steel plates 31 and multiple horizontally arranged connecting rods 32. The two first steel plates 31 are respectively embedded in the front and rear side walls of the upper column 11 or the lower column 21, so that the opposite side walls of the two first steel plates 31 serve as the front and rear side walls of the bottom of the upper column 11 and the top of the lower column 21. The bottom wall of the first steel plate 31 embedded in the upper column 11 is flush with the bottom wall of the upper column 11, and the top wall of the first steel plate 31 embedded in the lower column 21 is flush with the top wall of the lower column 21. This improves the flatness of the connection node with the upper column 11 and the lower column 21, enabling the connection node to achieve stable assembly during the assembly process. It avoids installation errors or local stress concentration problems caused by the protrusion of the first steel plate 31, thereby effectively improving the overall flatness and stress uniformity at the connection node. Multiple connecting rods 32 are pre-embedded in the upper column 11 or the lower column 21, and both ends of the multiple connecting rods 32 are fixedly connected to the opposite side walls of the two first steel plates 31, which not only enhances the structural rigidity of the modular steel frame 3 itself, but also significantly improves the connection strength between the modular steel frame 3 and the upper column 11 or the lower column 21, thereby improving the structural stability of the upper module 1 and the lower module 2 during transportation and hoisting, and providing a foundation for the reliable installation of the subsequent connecting component 4. The connecting component 4 is fixedly installed on the opposite outer walls of the two first steel plates 31, which can connect the two modular steel frames 3 on the upper column 11 and the lower column 21 into an integral structure, that is, the upper module 1 and the lower module 2 form an integral structure, and form a multi-directional constraint structure in the vertical and horizontal directions, so as to achieve good shear, tensile and bending bearing capacity under vertical load, lateral load or complex working conditions, significantly improving the mechanical performance and deformation coordination capacity of the connection node structure, and improving the continuity of force transmission and seismic resistance of the concrete modular building.

[0038] It should be noted that each modular steel frame 3 is prefabricated together with the upper column 11 or the lower column 21. That is, before the upper column 11 or the lower column 21 is poured, the modular steel frame 3 is placed inside the template of the upper column 11 or the lower column 21, and then the upper column 11 or the lower column 21 with the pre-embedded modular steel frame 3 is formed. Moreover, each modular steel frame 3 is an integral structure and is also a prefabricated structure.

[0039] Furthermore, such as Figure 3As shown, the connecting component 4 includes two vertically arranged and oppositely positioned second steel plates 41 and two sets of horizontally arranged bolts 42. The two second steel plates 41 are respectively fixedly installed on the four first steel plates 31 by the two sets of bolts 42, thereby improving the installation efficiency between the second steel plates 41 and the first steel plates 31. Furthermore, the installation of the two second steel plates 41 stably connects the upper column 11 and the lower column 21 into a unified structure, ensuring a clear force path and continuous force transmission at the connection node, effectively solving the problems of weak connection nodes and discontinuous stiffness in traditional modular buildings. Moreover, each second steel plate 41 is abutted against the two first steel plates 31 on the same side as the upper column 11 and the lower column 21, so that the two second steel plates 41 can completely cover the four first steel plates 31, achieving effective coverage and a stable connection between the two modular steel frames 3 and the connecting component 4.

[0040] Each group of bolts 42 has multiple bolts, which pass sequentially through the second steel plate 41 and the first steel plate 31 and are screwed into the connecting rods 32 one by one. This allows the second steel plate 41 to be installed on the two first steel plates 31 on the same side of the upper column 11 and the lower column 21. This significantly improves the connection strength between the second steel plate 41 and the first steel plate 31, and also improves the rigidity of the connecting rods 32, as well as the overall rigidity and load-bearing capacity of the connection node. Alternatively, each bolt 42 can be fixed to the second steel plate 41 by welding after being screwed into the connecting rod 32, preventing the bolts 42 from loosening, thereby improving the connection strength and stability between the modular steel frame 3 and the connecting components 4.

[0041] Furthermore, such as Figure 4 and Figure 5 As shown, both ends of the connecting rod 32 are provided with screw-in spaces 321. Two bolts 42, corresponding to the two ends of the connecting rod 32, are screwed into the two screw-in spaces 321 respectively, so that the first steel plate 31 and the second steel plate 41 can form an integral structure, thereby making the upper column 11 and the lower column 21 form an integral structure, so that the upper module 1 can transmit force to the lower module 2, improving the continuity of force transmission. Moreover, it can also improve the strength of the connecting rod 32, so that the bolts 42 can withstand the component force of the connecting rod 32, avoiding problems such as stress concentration in the connecting rod 32 leading to deformation and damage.

[0042] Furthermore, such as Figure 1 As shown, the outer contour of the second steel plate 41 is consistent with the outer contour formed by the two first steel plates 31 on the same side of the upper column 11 and the lower column 21. This can improve the assembly accuracy and fit of the connection node structure during the assembly process, avoid stress concentration or local deformation caused by structural misalignment, and further enhance the uniformity of force and structural integrity at the connection node.

[0043] Furthermore, such as Figure 1As shown, the outer wall of the second steel plate 41 away from the first steel plate 31 is flush with the outer wall of the upper column 11 and the lower column 21 on the same side. This makes the outer wall surface of the connecting node structure more flat with the outer wall surface of the upper column 11 and the lower column 21, making the appearance of the concrete modular building more beautiful and improving the structural integrity and flatness of the concrete modular building.

[0044] Furthermore, such as Figures 1-3 As shown, the lower module 2 also includes a composite beam 22, which is connected to one side wall of the lower column 21, and the top wall of the composite beam 22 is flush with the top wall of the lower column 21. Both the composite beam 22 and the top wall of the lower column 21 are reinforced with a cast-in-place layer 5, which allows the bottom of the upper column 11 to be initially embedded in the cast-in-place layer 5, thus initially connecting the upper column 11 and the lower column 21 and improving the safety and stability of on-site assembly.

[0045] Example 2

[0046] Unlike Example 1, as Figure 6 and Figure 7 As shown, the connecting rod 32 in this embodiment is a hollow structure. Two bolts 42, corresponding to both ends of the connecting rod 32, are screwed into the hollow structure, enabling the second steel plate 41 to be stably installed on the modular steel frame 3. This allows the first steel plate 31 and the second steel plate 41 to form an integral structure, thereby making the upper column 11 and the lower column 21 form an integral structure. This allows the upper module 1 to transfer force to the lower module 2, improving the continuity of force. Furthermore, it also increases the strength of the connecting rod 32, giving the connection node structure good shear, tensile, and bending resistance under vertical loads, horizontal loads, or seismic action. The opposing ends of the two bolts 42 abut against each other, effectively preventing instability of the connection node due to loosening of one side of the bolts 42, further enhancing the reliability and durability of the connection node structure.

[0047] Example 3

[0048] Unlike Embodiment 1 and Embodiment 2, as Figure 8 and Figure 9As shown, in this embodiment, there are two upper modules 1 and two lower modules 2. The two upper modules 1 are arranged horizontally and adjacently, and the two lower modules 2 are arranged horizontally and adjacently, with the two upper modules 1 and the two lower modules 2 arranged vertically in a one-to-one correspondence. A modular steel frame 3 is pre-embedded at the bottom of the two adjacent upper columns 11 of the two upper modules 1 and at the top of the two adjacent lower columns 21 of the two lower modules 2, and the outer walls of the four modular steel frames 3 are the outer walls of the bottom of the two upper columns 11 and the top of the two lower columns 21, respectively. The connecting component 4 covers the four modular steel frames 3 pre-embedded at the bottom of the two upper columns 11 and the top of the two lower columns 21. The connecting component 4 is fixedly installed on the four modular steel frames 3, and the inner wall of the connecting component 4 is in contact with the outer wall of the four modular steel frames 3, so as to connect the two upper columns 11 and the two lower columns 21 into an integrated structure through the connecting component 4 and the four modular steel frames 3.

[0049] For the connection nodes of the two upper modules 1 and the two lower modules 2, a modular steel frame 3 is installed at the bottom of the two upper columns 11 and the top of the two lower columns 21, and connected to the four modular steel frames 3 by a set of connecting components 4. The inner wall of the connecting components 4 is in contact with the outer wall of the four modular steel frames 3, so that the connecting components 4 can fully cover the four modular steel frames 3. This allows the set of connecting components 4 to connect the two upper columns 11 and the two lower columns 21 to form an integral structure. In other words, the two upper modules 1 and the two lower modules 2 form an integral structure and a multi-directional force transmission structure. That is, the force on the two upper modules 1 can be transmitted to the two lower modules 2 through the four modular steel frames 3 and the set of connecting components 4, realizing the transmission of vertical and horizontal loads. This improves the continuity of force transmission, significantly improves the overall stiffness and safety of the concrete modular building, as well as the load-bearing capacity and deformation coordination of the connection node structure during the stress process.

[0050] Furthermore, a composite beam 22 is connected to each of the opposite sidewalls of the two lower columns 21, and the top walls of the two composite beams 22 are flush with the top walls of the two lower columns 21. A cast-in-place layer 5 is poured on the top walls of both the two composite beams 22 and the two lower columns 21 to initially connect the two upper columns 11 and the two lower columns 21. By providing composite beams 22 on the opposite sidewalls of the two lower columns 21, with their top walls flush with the top walls of the lower columns 21, the top walls of the composite beams 22 and the lower columns 21 together form a flat supporting surface. During construction, by pouring the cast-in-place layer 5 on the flat supporting surface formed by the top walls of the composite beams 22 and the lower columns 21, the bottoms of the two upper columns 11 can be initially embedded in the cast-in-place layer 5, achieving an initial connection between the two upper modules 1 and the two lower modules 2, thus improving the safety and stability of on-site assembly.

[0051] Example 4

[0052] The construction steps of a modular concrete building in this embodiment are as follows:

[0053] like Figures 1-3 As shown, in this embodiment, there is one upper module 1 and one lower module 2, two modular steel frames 3, and one set of connecting components 4.

[0054] S1: The upper column 11 and the modular steel frame 3 at the bottom of the upper column 11 are prefabricated integrated structures in the factory, and the lower column 21 and the modular steel frame 3 at the top of the lower column 21 are prefabricated integrated structures in the factory. That is, during the pouring, the two modular steel frames 3 are pre-embedded at the bottom of the upper column 11 and the top of the lower column 21 respectively. At this time, the inner walls of the two first steel plates 31 in the same modular steel frame 3 are respectively attached to the front and rear side walls of the upper column 11 or the lower column 21, and multiple connecting rods 32 are placed in the upper column 11 or the lower column 21.

[0055] S2: Hoist the lower module 2 and tie the reinforcing bars on the top of the lower column 21 and the top of the composite beam 22.

[0056] S3: After the reinforcing bars are tied, cast-in-place layer 5 is poured on the top of composite beam 22 and the top of lower column 21.

[0057] S4: Hoist the upper module 1 so that the vertical center lines of the upper column 11 and the lower column 21 are aligned, and the bottom of the upper column 11 is initially connected and fixed to the lower column 21 through the cast-in-place layer 5.

[0058] S5: The two second steel plates 41 are respectively attached to the four first steel plates 31, so that the second steel plate 41 fully covers the two first steel plates 31 on the same side, that is, the outer contour formed by the two first steel plates 31 on the same side is consistent with the outer contour of the second steel plate 41. The outer wall of the second steel plate 41 away from the first steel plate 31 is flush with the wall on the same side of the upper column 11 and the lower column 21, and the axis of each screw hole on the second steel plate 41 is aligned with the axis of each screw hole on the first steel plate 31 and the axis of each connecting rod 32.

[0059] S6: Each set of bolts 42 passes through the second steel plate 41 and the first steel plate 31 in sequence, and is screwed into the connecting rod 32 one by one, so that the two second steel plates 41 connect the two modular steel frames 3 into a whole structure, thereby connecting the upper module 1 and the lower module 2 into a whole structure.

[0060] Example 5

[0061] Unlike Example 4, the construction steps for a modular concrete building in this example are as follows:

[0062] like Figure 8 indivual Figure 9As shown, in this embodiment, there are two upper modules 1 and two lower modules 2, four modular steel frames 3, and one set of connecting components 4.

[0063] S1: The two upper columns 11 and the modular steel frame 3 at the bottom of the two upper columns 11 are prefabricated in the factory as an integrated structure. The two lower columns 21 and the modular steel frame 3 at the top of the two lower columns 21 are prefabricated in the factory as an integrated structure. That is, during the pouring, the four modular steel frames 3 are pre-embedded at the bottom of the two upper columns 11 and the top of the two lower columns 21 respectively. At this time, the inner walls of the two first steel plates 31 in the same modular steel frame 3 are respectively attached to the front and rear side walls of the corresponding upper column 11 or lower column 21. Multiple connecting rods 32 are placed in the upper column 11 or lower column 21.

[0064] S2: Hoist a lower module 2 and tie steel bars at the top of the lower column 21 and the top of the composite beam 22.

[0065] S3: Hoist another lower module 2 so that the two adjacent lower columns 21 of the two lower modules 2 fit together, and tie steel bars on the top of the lower column 21 and the top of the composite beam 22.

[0066] S4: After the steel bars are tied, cast-in-place layer 5 is poured on the top of the two composite beams 22 and the top of the two lower columns 21, so that the two lower modules 2 form an integral module.

[0067] S5: Hoist an upper module 1 so that the vertical centerline of the upper column 11 and its corresponding lower column 21 in the upper module 1 are aligned, and the bottom of the upper column 11 is initially connected and fixed to its corresponding lower column 21 through the cast-in-place layer 5.

[0068] S6: Hoist another upper module 1 so that the vertical centerline of the upper column 11 and its corresponding lower column 21 in the upper module 1 are aligned, the two adjacent upper columns 11 of the two upper modules 1 are attached together, and the bottom of the upper column 11 is initially connected and fixed to its corresponding lower column 21 through the cast-in-place layer 5.

[0069] S7: The two second steel plates 41 are respectively attached to the eight first steel plates 31, so that the second steel plates 41 fully cover the four first steel plates 31 on the same side, that is, the outer contour formed by the four first steel plates 31 on the same side is consistent with the outer contour of the second steel plate 41. The outer wall of the second steel plate 41 away from the first steel plate 31 is flush with the wall on the same side of the upper column 11 and the lower column 21, and the axis of each screw hole on the second steel plate 41 is aligned with the axis of each screw hole on the first steel plate 31 and the axis of each connecting rod 32 in a one-to-one correspondence.

[0070] S6: Each set of bolts 42 passes through the second steel plate 41 and the first steel plate 31 in sequence, and is screwed into the connecting rod 32 one by one, so that the two second steel plates 41 connect the four modular steel frames 3 into a whole structure, thereby connecting the two upper modules 1 and the two lower modules 2 into a whole structure.

[0071] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0073] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A concrete modular building comprising an upper module (1) and a lower module (2) stacked one above the other, the upper module (1) comprising an upper column (11) and the lower module (2) comprising a lower column (21), characterized in that, It also includes a connection node structure for connecting the upper column (11) and the lower column (21); The connection node structure includes a modular steel frame (3) and a connection component (4). A modular steel frame (3) is pre-embedded at the bottom of the upper column (11) and the top of the lower column (21), and the outer walls of the two modular steel frames (3) are the bottom outer wall of the upper column (11) and the top outer wall of the lower column (21), respectively. The connecting component (4) covers the two modular steel frames (3) embedded at the bottom of the upper column (11) and the top of the lower column (21). The connecting component (4) is fixedly connected to the two modular steel frames (3), and the inner wall of the connecting component (4) fits against the outer wall of the two modular steel frames (3) to connect the upper column (11) and the lower column (21) into an integral structure through the connecting component (4) and the two modular steel frames (3).

2. The modular concrete building as described in claim 1, characterized in that: The modular steel frame (3) includes two vertically arranged first steel plates (31) and multiple horizontally arranged connecting rods (32); Two first steel plates (31) are respectively embedded in the front and rear side walls of the upper column (11) or the lower column (21), so that the opposite side walls of the two first steel plates (31) serve as the front and rear side walls of the bottom of the upper column (11) and the top of the lower column (21), and the bottom wall of the first steel plate (31) embedded in the upper column (11) is flush with the bottom wall of the upper column (11), and the top wall of the first steel plate (31) embedded in the lower column (21) is flush with the top wall of the lower column (21); Multiple connecting rods (32) are pre-embedded in the upper column (11) or the lower column (21), and the two ends of the multiple connecting rods (32) are respectively fixedly connected to the opposite side walls of the two first steel plates (31); The connecting component (4) is fixedly installed on the opposite outer walls of the two first steel plates (31).

3. The modular concrete building as described in claim 2, characterized in that: The connecting assembly (4) includes two vertically arranged and oppositely arranged second steel plates (41) and two sets of horizontally arranged bolts (42); Two second steel plates (41) are fixedly installed on four first steel plates (31) by two sets of bolts (42), and each second steel plate (41) is in contact with two first steel plates (31) on the same side of the upper column (11) and the lower column (21); Each set of bolts (42) has multiple bolts, which pass through the second steel plate (41) and the first steel plate (31) in sequence and are screwed into the multiple connecting rods (32) in a corresponding manner, so as to install the second steel plate (41) on the two first steel plates (31) on the same side of the upper column (11) and the lower column (21).

4. The modular concrete building as described in claim 3, characterized in that: Both ends of the connecting rod (32) are provided with screwing spaces (321), and the two bolts (42) corresponding to the two ends of the connecting rod (32) are respectively screwed into the two screwing spaces (321).

5. The modular concrete building as described in claim 3, characterized in that: The connecting rod (32) is a hollow structure, and two bolts (42) corresponding to the two ends of the connecting rod (32) are respectively screwed into the hollow structure, and the opposite ends of the two bolts (42) can abut against each other.

6. The modular concrete building as described in claim 3, characterized in that: The outer contour of the second steel plate (41) is consistent with the outer contour formed by the two first steel plates (31) on the same side of the upper column (11) and the lower column (21).

7. The modular concrete building as described in claim 6, characterized in that: The outer wall of the second steel plate (41) away from the first steel plate (31) is flush with the outer wall of the upper column (11) and the lower column (21) on the same side.

8. The modular concrete building as described in claim 1, characterized in that: The lower module (2) also includes a composite beam (22), which is connected to one side wall of the lower column (21), and the top wall of the composite beam (22) is flush with the top wall of the lower column (21). The top walls of the composite beam (22) and the lower column (21) are both cast-in-place layers (5) to initially connect the upper column (11) and the lower column (21).

9. The modular concrete building as described in claim 1, characterized in that: The upper module (1) and the lower module (2) are provided in twos. The two upper modules (1) are arranged horizontally and adjacent to each other, and the two lower modules (2) are arranged horizontally and adjacent to each other. The two upper modules (1) and the two lower modules (2) are arranged vertically in a one-to-one correspondence. A modular steel frame (3) is pre-embedded at the bottom of the two adjacent upper columns (11) of the two upper modules (1) and at the top of the two adjacent lower columns (21) of the two lower modules (2), and the outer walls of the four modular steel frames (3) are the outer walls of the bottom of the two upper columns (11) and the top of the two lower columns (21), respectively. The connecting component (4) covers the four modular steel frames (3) embedded in the bottom of the two upper columns (11) and the top of the two lower columns (21). The connecting component (4) is fixedly installed on the four modular steel frames (3), and the inner wall of the connecting component (4) is in contact with the outer wall of the four modular steel frames (3) to connect the two upper columns (11) and the two lower columns (21) into an integrated structure through the connecting component (4) and the four modular steel frames (3).

10. The modular concrete building as described in claim 9, characterized in that: A composite beam (22) is connected to the opposite sidewalls of the two lower columns (21), and the top walls of the two composite beams (22) are flush with the top walls of the two lower columns (21). The top wall of the two superposed beams (22) and the top wall of the two lower columns (21) are each cast with a cast-in-place layer (5) to preliminarily correspondingly connect the two upper columns (11) and the two lower columns (21).

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