Connecting joint combination structure of modular building

Abstract

The invention discloses a connection node combination structure of a modular building. The connection node combination structure comprises two lower module frame columns arranged side by side at an interval, two upper module frame columns arranged at the tops of the two lower module frame columns correspondingly, and upper and lower module connection plates connected between the two upper module frame columns and the two lower module frame columns. A lower module top frame beam is arranged at the top of one side of the lower module frame column; an upper module bottom frame beam is arranged at the top of one side, close to the lower module top frame beam, of the upper module frame column; a first slurry blocking structure is arranged between the two upper module bottom frame beams, and a second slurry blocking structure is arranged between the two lower module top frame beams; and a third slurry blocking structure is arranged between the upper module bottom frame beam and the corresponding lower module top frame beam. Gaps between beams are filled through the first slurry blocking structures, the second slurry blocking structures and the third slurry blocking structures, the overall performance of the structure is improved, and the problems of cold bridges, fire prevention, wind prevention and insect prevention existing between modules of the connection joint are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a connection node combination structure of a modular building. Background Art

[0002] Modular buildings are conducive to comprehensively improving building quality, reducing environmental pollution and ecological damage, and are in line with the country's green development concept and the policy orientation of building a resource-saving society. As a new type of building form, modular buildings have developed rapidly in my country in recent years with their excellent performance and outstanding features.

[0003] However, since the modular building floor is prefabricated in blocks, the box is separated and only connected by steel plates at the nodes, the integrity is poor. Therefore, ordinary stacked boxes are usually not suitable for high-rise buildings. If the safety of high-rise modular buildings is to be ensured, it is necessary to adopt cast-in-place roofs, rigid joints, set up internal supports, performance-based design, increase lateral force resistance structures and other strengthening measures, which reduce its economic efficiency.

[0004] Connection nodes are the core technology of modular design. The selection of nodes is directly related to structural safety, economy, and construction convenience. The nodes of each project are not exactly the same, and standardization and generalization have not been achieved, which limits the application and promotion. At the same time, in terms of nodes: the corner box is larger than that of competing products, the node connection plate is thicker, and the amount of steel used is larger. In terms of system: the double beams and double columns of the module use a lot of steel. Due to functional needs, the bottom frame structure and frame support conversion will increase the amount of structural steel used; the larger the proportion of modules, the greater the average amount of steel used; application in hospitals, schools, and high-rise buildings requires performance-based design or measures such as energy dissipation and shock absorption. Higher performance requirements and energy dissipation and shock absorption components increase the cost of the structure, and the design is also more complicated. Modular buildings have no connection between the beam-column connection nodes of the upper and lower modules, resulting in gaps, cold bridges, and difficulties in fire and waterproof sealing. Summary of the invention

[0005] Therefore, the present invention aims to solve the problem in the prior art that there are gaps between the beam-column connection nodes of the upper and lower modules in modular buildings, and the resulting cold bridges lead to difficulties in fire prevention, waterproofing and sealing, thereby providing a connection node combination structure of a modular building.

[0006] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0007] A connection node combination structure of a modular building, comprising two lower module frame columns arranged side by side at intervals, two upper module frame columns respectively arranged on the top of the two lower module frame columns, and upper and lower module connection plates connected between the two upper module frame columns and the two lower module frame columns; a lower module top frame beam is arranged on the top of one side of the two lower module frame columns; an upper module bottom frame beam is arranged on the top of one side of the two upper module frame columns close to the lower module top frame beam; the two upper module bottom frame beams are respectively arranged above the two lower module top frame beams; a first slurry blocking structure is arranged between the two upper module bottom frame beams, and a second slurry blocking structure is arranged between the two lower module top frame beams; a third slurry blocking structure is arranged between the upper module bottom frame beam and the corresponding lower module top frame beam.

[0008] Furthermore, the two upper bottom frame beams are arranged opposite to each other in a C shape, and a pouring space suitable for pouring concrete is provided between the two upper bottom frame beams. A lower connecting piece with one end extending into the pouring space is provided on the top frame beam of the lower module, and an upper connecting piece with one end extending into the pouring space is provided on the bottom frame beam of the upper module.

[0009] Furthermore, the upper connecting member and the lower connecting member are both connecting pins, and the diameter of one end of the connecting pin located in the injection space is larger than the diameter of the other end thereof.

[0010] Furthermore, the inner tops of the two upper bottom frame beams are provided with ribs fixedly connected to the upper module frame columns.

[0011] Furthermore, the two upper module frame columns are respectively arranged directly above the two lower module frame columns, and the top of the lower module top frame beam is flush with the top of the lower module frame column.

[0012] Furthermore, an upper module floor is arranged on the upper module frame column, and a lower module floor is arranged on the lower module frame column.

[0013] Furthermore, an upper module bottom plate fixedly connected to the corresponding upper module frame column is fixedly arranged between the upper module floor slab and the corresponding upper module bottom frame beam.

[0014] Furthermore, a lower module top plate fixedly connected to the corresponding lower module frame column is fixedly arranged between the lower module floor plate and the corresponding lower module top frame beam.

[0015] Furthermore, the upper module bottom plate and the lower module top plate are both made of grouting.

[0016] Furthermore, the first slurry blocking structure, the second slurry blocking structure, and the third slurry blocking structure are all made of PE slurry blocking material.

[0017] The technical solution of the present invention has the following advantages:

[0018] 1. The connection node combination structure of the modular building provided by the present invention can fill the node gaps on the left and right sides of the upper module by arranging a first slurry blocking structure between the bottom frame beams of the two upper modules, thereby improving the cold bridge effect here; a second slurry blocking structure is arranged between the two lower module top frame beams, so as to fill the node gaps on the left and right sides of the lower module, thereby improving the node cold bridge effect; a third slurry blocking structure is arranged between the bottom frame beam of the upper module and the corresponding top frame beam of the lower module, so as to fill the node gap between the upper module and the lower module, thereby improving the cold bridge effect between the connection nodes of the upper module and the lower module; the gaps between the beams are filled by the first slurry blocking structure, the second slurry blocking structure, and the third slurry blocking structure, so as to improve the overall performance of the structure, and effectively improve the existing cold bridge, fire prevention, wind prevention, and insect prevention problems.

[0019] 2. The connection node combination structure of the modular building provided by the present invention, the two upper bottom frame beams are arranged opposite to each other in a C shape, a pouring space suitable for pouring concrete is provided between the two upper bottom frame beams, a lower connecting piece with one end extending into the pouring space is provided on the lower module top frame beam, and an upper connecting piece with one end extending into the pouring space is provided on the upper module bottom frame beam. In this way, by setting a pouring space suitable for pouring concrete, the connection strength and connection stability between the two upper module bottom frame beams can be guaranteed after the poured concrete solidifies, and the setting of the pouring space can improve the bearing capacity of the unit module; by setting an upper connecting piece with one end extending into the pouring space on the bottom frame beam of the upper module, the connection stability between the concrete here and the bottom frame beam of the upper module can be improved after the concrete in the pouring space solidifies; and by setting a lower connecting piece with one end extending into the pouring space on the top frame beam of the lower module, the connection stability between the concrete here and the top frame beam of the lower module can be improved after the concrete in the pouring space solidifies; thereby, the overall performance of the connection node can be improved, the connection between the modules on the same layer can be strengthened, and the bearing capacity of the connection node can be improved.

[0020] 3. The connection node combination structure of the modular building provided by the present invention, the upper connection piece and the lower connection piece are both connection bolts, and the diameter of one end of the connection bolt located in the pouring space is larger than the diameter of the other end. In this way, the diameter of one end of the connection bolt located in the pouring space is larger than the diameter of the other end, which can form a limiting effect. When there is solidified concrete in the pouring space, the connection strength between the connection bolt and the solidified concrete can be effectively strengthened, avoiding the risk of failure between the connection bolt and the solidified concrete, and ensuring the reliable connection between the modules.

[0021] 4. The connection node combination structure of the modular building provided by the present invention has beard bars fixedly connected to the upper module frame columns at the top of the two upper bottom frame beams. With such arrangement, the beard bars can improve the connection strength and connection stability between the upper module frame columns and the upper module bottom frame beams after the concrete poured in the later stage of the pouring space solidifies; it can also ensure the connection reliability between the upper bottom frame beam and the concrete poured in the later stage of the pouring space, and avoid the risk of the beard bars coming out and failing; and the beard bars have high installation efficiency, no additional positioning auxiliary measures are required, and they can also be prefabricated in the factory, which can effectively improve the construction efficiency.

[0022] 5. The connection node combination structure of the modular building provided by the present invention is provided with an upper module bottom plate fixedly connected to the corresponding upper module frame column between the upper module floor plate and the corresponding upper module bottom frame beam. In this way, the upper module floor plate, the upper module bottom frame beam and the upper module frame beam are connected and communicated through the upper module bottom plate, thereby improving the integrity of the upper module and strengthening the connection between modules on the same floor.

[0023] 6. The connection node combination structure of the modular building provided by the present invention is that a lower module top plate fixedly connected to the corresponding lower module frame column is fixedly arranged between the lower module floor plate and the corresponding lower module top frame beam. In this way, the lower module floor plate, the lower module top frame beam and the lower module frame beam are connected and communicated through the lower module bottom plate, thereby improving the integrity of the lower module and strengthening the connection between modules on the same floor.

[0024] 7. The connection node combination structure of the modular building provided by the present invention, so the upper module bottom plate and the lower module top plate are both made by grouting. In this way, the upper module bottom plate and the lower module top plate are made by grouting, which can effectively fill the gap between the connection structures, and can reduce the amount of steel while ensuring the bearing capacity of the unit module, and can also use a smaller cross-section to meet higher bearing capacity requirements.

[0025] 8. The connection node combination structure of the modular building provided by the present invention, the first slurry blocking structure, the second slurry blocking structure, and the third slurry blocking structure are all made of PE slurry blocking material. In this way, since the PE material has strong corrosion resistance and long service life, it can be suitable for use in various corrosive environments, which can provide a guarantee for the structural strength of the connection node; at the same time, the PE material has good explosion-proof and fire-proof properties, and can remain stable in harsh environments such as high temperature and high pressure, which can provide a guarantee for the fire-proof performance of the connection node. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a three-dimensional structural diagram of the traditional unit connection nodes;

[0028] Figure 2 A three-dimensional structural diagram of step S3 provided in an embodiment of the present invention;

[0029] Figure 3 A three-dimensional structural diagram of part of the structure in step S7 provided in an embodiment of the present invention;

[0030] Figure 4 A three-dimensional structural diagram of step S8 provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure after pouring concrete into the pouring space in step S11 provided in an embodiment of the present invention.

[0032] Explanation of the reference numerals: 1. frame column of lower module; 2. frame column of upper module; 3. connecting plates of upper and lower modules; 4. top frame beam of lower module; 5. bottom frame beam of upper module; 6. first slurry blocking structure; 7. second slurry blocking structure; 8. third slurry blocking structure; 9. pouring space; 10. lower connecting piece; 11. upper connecting piece; 12. beard rib; 13. upper module floor slab; 14. lower module floor slab; 15. bottom plate of upper module; 16. top plate of lower module; 17. longitudinal reinforcement. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1 The traditional unit connection node shown in the figure uses steel beams as the bottom frame beam of the upper module and the top frame beam of the lower module on both the upper module and the lower module, which greatly increases the amount of steel used and also increases the cost of engineering construction; and the upper and lower beams of the module are separate structures and cannot work together and coordinate internal forces; there is a gap between the beams and columns of the upper and lower modules, which will produce a cold bridge effect, and fire and waterproof sealing are also difficult.

[0038] like Figure 2-5 A connection node combination structure of a modular building is shown, comprising two lower module frame columns 1 arranged side by side at intervals, two upper module frame columns 2 respectively arranged on the top of the two lower module frame columns 1, and upper and lower module connecting plates 3 connected between the two upper module frame columns 2 and the two lower module frame columns 1; a lower module top frame beam 4 is arranged on the top of one side of the two lower module frame columns 1; an upper module bottom frame beam 5 is arranged on the top of one side of the two upper module frame columns 2 close to the lower module top frame beam 4; the two upper module bottom frame beams 5 are respectively arranged above the two lower module top frame beams 4; a first slurry blocking structure 6 is arranged between the two upper module bottom frame beams 5, and a second slurry blocking structure 7 is arranged between the two lower module top frame beams 4; a third slurry blocking structure 8 is arranged between the upper module bottom frame beam 5 and the corresponding lower module top frame beam 4.

[0039] The connection node combination structure of this modular building can fill the node gaps on the left and right sides of the upper module by setting a first slurry blocking structure 6 between the two upper module bottom frame beams 5, so as to improve the cold bridge effect here; the second slurry blocking structure 7 is set between the two lower module top frame beams 4, so as to fill the node gaps on the left and right sides of the lower module, so as to improve the node cold bridge effect; the third slurry blocking structure 8 is set between the upper module bottom frame beam 5 and the corresponding lower module top frame beam 4, so as to fill the node gap between the upper module and the lower module, so as to improve the cold bridge effect between the connection nodes of the upper module and the lower module; the gaps between the beams are filled by the first slurry blocking structure 6, the second slurry blocking structure 7, and the third slurry blocking structure 8, so as to improve the overall performance of the structure, and effectively improve the existing cold bridge, fire prevention, wind prevention, and insect prevention problems.

[0040] In this embodiment, the first slurry blocking structure 6, the second slurry blocking structure 7, and the third slurry blocking structure 8 are all made of PE slurry blocking material. With this arrangement, since the PE material has strong corrosion resistance and long service life, it can be suitable for use in various corrosive environments, and can provide protection for the structural strength of the connection node; at the same time, the PE material has good explosion-proof and fire-proof properties, and can remain stable in harsh environments such as high temperature and high pressure, and can provide protection for the fire-proof performance of the connection node. Specifically, the first slurry blocking structure 6 and the second slurry blocking structure 7 are both PE slurry blocking rods, and the third slurry blocking structure 8 is a PE slurry blocking strip. In an alternative embodiment, the slurry blocking structure can also be made of other corrosion-resistant and high-temperature resistant materials.

[0041] In this embodiment, the two upper bottom frame beams are arranged opposite to each other in a C shape, and a pouring space 9 suitable for pouring concrete is provided between the two upper bottom frame beams. A lower connecting member 10 with one end extending into the pouring space 9 is fixedly provided on the lower module top frame beam 4, and an upper connecting member 11 with one end extending into the pouring space 9 is fixedly provided on the upper module bottom frame beam 5. In this way, by setting a pouring space 9 suitable for pouring concrete, the connection strength and connection stability between the two upper module bottom frame beams 5 can be guaranteed after the poured concrete solidifies, and the setting of the pouring space 9 can improve the bearing capacity of the unit module; by fixing an upper connecting member 11 with one end extending into the pouring space 9 on the bottom frame beam 5 of the upper module, the connection stability between the concrete here and the bottom frame beam 5 of the upper module can be improved after the concrete in the pouring space 9 solidifies; a lower connecting member 10 with one end extending into the pouring space 9 is fixedly provided on the top frame beam 4 of the lower module, and the connection stability between the concrete here and the top frame beam 4 of the lower module can be improved after the concrete in the pouring space 9 solidifies; thereby, the overall performance of the connection node can be improved, the connection between the modules on the same layer can be strengthened, and the bearing capacity of the connection node can be improved.

[0042] Specifically, the two upper module frame columns 2 are respectively arranged directly above the two lower module frame columns 1 , and the top of the lower module top frame beam 4 is flush with the top of the lower module frame column 1 .

[0043] In this embodiment, the upper connecting member 11 and the lower connecting member 10 are both connecting bolts, and the diameter of one end of the connecting bolt located in the pouring space 9 is larger than the diameter of the other end. In this way, the diameter of one end of the connecting bolt located in the pouring space 9 is larger than the diameter of the other end, which can form a limiting effect. When solidified concrete is provided in the pouring space 9, the connection strength between the connecting bolt and the solidified concrete can be effectively strengthened, avoiding the risk of failure of the connecting bolt and the solidified concrete coming out, and ensuring the reliable connection between the modules.

[0044] In this embodiment, the top of the two upper bottom frame beams is provided with a beard rib 12 fixedly connected to the upper module frame column 2. In this way, the beard rib 12 can improve the connection strength and connection stability between the upper module frame column 2 and the upper module bottom frame beam 5 after the concrete poured in the later stage of the pouring space 9 solidifies; it can also ensure the connection reliability between the upper bottom frame beam and the concrete poured in the later stage of the pouring space 9, and avoid the risk of the beard rib 12 coming out and failing; and the beard rib 12 has high installation efficiency, no additional positioning auxiliary measures are required, and it can also be prefabricated in the factory, which can effectively improve the construction efficiency. Specifically, longitudinal steel bars 17 fixedly connected to the upper module frame column 2 are also provided on the opposite sides of the beard rib 12. In this way, after the concrete material in the pouring space 9 solidifies to form a concrete column, the structural stability and bearing capacity of the concrete column can be improved, and the crack resistance of the concrete column can be improved.

[0045] Specifically, the lower connecting member 10 is vertically fixed to the top frame beam 4 of the lower module, the upper connecting member 11 is horizontally fixed to the inner wall of the side of the bottom frame beam 5 of the upper module, the beard rib 12 is vertically fixed to the inner wall of the top of the bottom frame beam 5 of the upper module, and one end extends into the pouring space 9, the longitudinal reinforcement 17 is horizontally fixed to the side wall of the frame column 2 of the upper module, and the longitudinal reinforcement 17 and the upper connecting member 11 are arranged perpendicular to each other. In an alternative embodiment, the beard rib and the bolt can be used interchangeably, or other connecting nails, connecting members, connecting structures or limiting structures can be used instead.

[0046] In this embodiment, an upper module floor 13 is provided on the upper module frame column 2, and a lower module floor 14 is provided on the lower module frame column 1. Specifically, an upper module floor 15 fixedly connected to the corresponding upper module frame column 2 is fixedly provided between the upper module floor 13 and the corresponding upper module bottom frame beam 5. In this way, the upper module floor 13, the upper module bottom frame beam 5 and the upper module frame beam are communicated and connected through the upper module floor 15, thereby improving the integrity of the upper module and strengthening the connection between the modules on the same floor. Specifically, a lower module top plate 16 fixedly connected to the corresponding lower module frame column 1 is fixedly provided between the lower module floor 14 and the corresponding lower module top frame beam 4. In this way, the lower module floor 14, the lower module top frame beam 4 and the lower module frame beam are communicated and connected through the lower module bottom plate, thereby improving the integrity of the lower module and strengthening the connection between the modules on the same floor.

[0047] Specifically, the upper module bottom plate 15 and the lower module top plate 16 are both made of grouting. In this way, the upper module bottom plate 15 and the lower module top plate 16 are made of grouting, which can effectively fill the gap between the connection structures, and can reduce the amount of steel while ensuring the bearing capacity of the unit module, and can also use a smaller cross-section to meet higher bearing capacity requirements.

[0048] In this embodiment, the connection node assembly structure of the modular building of the present application further includes the following construction steps:

[0049] S1: Install the lower module of the module, and fill the PE plugging rod or PE plugging strip between the modules for plugging treatment;

[0050] S2: Install two lower module frame columns 1;

[0051] S3: Filling PE plugging rods or PE plugging strips between two lower module frame columns 1;

[0052] S4: Install two upper module frame columns 2;

[0053] S5: Filling PE plugging rods or PE plugging strips between the two upper module frame columns 2;

[0054] S6: Install the lower module top frame beam 4 on the top of the side walls of the two lower module frame columns 1;

[0055] S7: Filling PE plugging rods or PE plugging strips between the two lower module top frame beams 4;

[0056] S8: Install the upper module bottom frame beam 5 at the bottom of the side walls of the two upper module frame columns 2. The two upper module bottom frame beams 5 are C-shaped and arranged opposite to each other, thereby forming a through pouring space 9;

[0057] S9: Filling PE plugging rods or PE plugging strips between the two upper module bottom frame beams 5;

[0058] S10: Horizontal studs fixed to the bottom frame beam 5 of the upper module, vertical studs fixed to the top frame beam of the lower module, and longitudinal steel bars 17 and beard bars 12 fixed to the frame column 2 of the upper module are respectively arranged in the pouring space 9;

[0059] S11: pouring concrete into the pouring space 9 , and forming an upper module bottom plate above the pouring space 9 after the concrete flows out.

[0060] In summary, the connection node combination structure of this modular building can fill the node gaps on the left and right sides of the upper module by setting the first slurry blocking structure 6 between the two upper module bottom frame beams 5, so as to improve the cold bridge effect here; the second slurry blocking structure 7 is set between the two lower module top frame beams 4, so as to fill the node gaps on the left and right sides of the lower module, so as to improve the node cold bridge effect; the third slurry blocking structure 8 is set between the upper module bottom frame beam 5 and the corresponding lower module top frame beam 4, so as to fill the node gap between the upper module and the lower module, so as to improve the cold bridge effect between the connection nodes of the upper module and the lower module; the first slurry blocking structure 6, the second slurry blocking structure 7, and the third slurry blocking structure 8 are used to fill the gaps between the beams, improve the overall performance of the structure, and effectively improve the existing cold bridge, fire prevention, wind prevention, and insect prevention problems.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A connection node combination structure of a modular building, characterized in that: The invention comprises two lower module frame columns (1) arranged side by side and spaced apart, two upper module frame columns (2) respectively arranged on the top of the two lower module frame columns (1), and an upper and lower module connecting plate (3) connected between the two upper module frame columns (2) and the two lower module frame columns (1); a lower module top frame beam (4) is arranged on the top of one side of the two lower module frame columns (1); an upper module bottom frame beam (5) is arranged on the top of one side of the two upper module frame columns (2) close to the lower module top frame beam (4); the two upper module bottom frame beams (5) are respectively arranged above the two lower module top frame beams (4); a first slurry blocking structure (6) is arranged between the two upper module bottom frame beams (5), and a second slurry blocking structure (7) is arranged between the two lower module top frame beams (4); and a third slurry blocking structure (8) is arranged between the upper module bottom frame beam (5) and the corresponding lower module top frame beam (4).

2. The connection node assembly structure of a modular building according to claim 1, characterized in that: The two upper bottom frame beams are arranged opposite to each other in a C shape, a pouring space (9) suitable for pouring concrete is arranged between the two upper bottom frame beams, a lower connecting piece (10) having one end extending into the pouring space (9) is arranged on the lower module top frame beam (4), and an upper connecting piece (11) having one end extending into the pouring space (9) is arranged on the upper module bottom frame beam (5).

3. The connection node assembly structure of modular building according to claim 2, characterized in that: The upper connecting piece (11) and the lower connecting piece (10) are both connecting bolts, and the diameter of one end of the connecting bolt located in the injection space (9) is larger than the diameter of the other end.

4. The connection node assembly structure of modular building according to claim 2, characterized in that: The inner tops of the two upper bottom frame beams are both provided with beard ribs (12) fixedly connected to the upper module frame columns (2).

5. The connection node assembly structure of modular building according to claim 1, characterized in that: The two upper module frame columns (2) are respectively arranged directly above the two lower module frame columns (1), and the top of the lower module top frame beam (4) is flush with the top of the lower module frame column (1).

6. The connection node assembly structure of modular building according to claim 1, characterized in that: An upper module floor slab (13) is arranged on the upper module frame column (2), and a lower module floor slab (14) is arranged on the lower module frame column (1).

7. The connection node assembly structure of modular building according to claim 6, characterized in that: An upper module bottom plate (15) fixedly connected to the corresponding upper module frame column (2) is fixedly arranged between the upper module floor plate (13) and the corresponding upper module bottom frame beam (5).

8. The connection node assembly structure of modular building according to claim 7, characterized in that: A lower module top plate (16) fixedly connected to the corresponding lower module frame column (1) is fixedly arranged between the lower module floor plate (14) and the corresponding lower module top frame beam (4).

9. The connection node assembly structure of modular building according to claim 8, characterized in that: The upper module bottom plate (15) and the lower module top plate (16) are both made by grouting.

10. The connection node assembly structure of modular building according to claim 1, characterized in that: The first slurry blocking structure (6), the second slurry blocking structure (7) and the third slurry blocking structure (8) are all made of PE slurry blocking material.

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