A connection node for staggered stacked steel structural modules

Abstract

The utility model relates to the technical field of building engineering, especially interlaced steel structure module's connecting joint of stacking. The utility model discloses two groups of connecting components oppositely arranged up and down, every connecting component includes the horizontal setting connecting end plate, the outer sleeve and inner sleeve that are all connected with the connecting end plate perpendicularly and are horizontally interval arrangement, and the inner wall on the outer sleeve and the outer wall on the inner sleeve all are equipped with annular protruding, two connecting components with its connecting end plate and outer sleeve are connected in the bottom of upper module and the top of lower module, the outer sleeve and inner sleeve located in the upper can be inserted with the inner sleeve and outer sleeve located in the lower, and the inner sleeve after corresponding insertion is located in the inside of outer sleeve and forms the grouting space between both. Through being equipped with annular protruding on the inner wall of outer sleeve and the outer wall of inner sleeve, it can enhance the anti -pulling capacity of connecting joint, and the structure appearance is simple, and the production difficulty is reduced obviously.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a connection node for staggered stacked steel structure modules. Background Technology

[0002] As the construction industry accelerates its transformation and upgrading towards new industrialized construction, prefabricated buildings, with their green, low-carbon, high-quality, and high-efficiency development trends, are gradually becoming the industry mainstream. Among them, modular buildings, with the highest degree of integration, have received widespread attention and promotion due to their advantages such as fast construction speed, controllable construction quality, and high degree of industrialization.

[0003] In the field of modular steel structure buildings, with continuous breakthroughs and in-depth research on key technologies, various node forms with reliable connections, convenient installation, and superior structural performance have emerged, providing strong support for the safety and applicability of modular buildings. However, such buildings still suffer from prominent problems such as large steel consumption and low space utilization, which restrict their further promotion and development in the market and have become core technical challenges that modular buildings urgently need to overcome.

[0004] Against this backdrop, staggered stacked structures, as an innovative structural arrangement, effectively avoid the redundant structural problems of double columns, double beams, and double slabs found in traditional stacked structures, thereby significantly reducing the amount of steel used and improving the utilization efficiency of the building's interior space. From an engineering practice perspective, developing a connection node that is simple to construct, easy to install, and possesses excellent structural performance is key to realizing the widespread application of staggered stacked structures.

[0005] In existing technologies, the connection nodes of staggered stacked structural systems typically consist of an outer cylinder and pull-out members. Capped studs are evenly distributed on the inner wall of the outer cylinder and the outer wall of the pull-out members, arranged in a staggered pattern. Pull-out force is transferred through short, compressed columns formed by grouting between the pull-out members and the outer cylinder, thus achieving the pull-out connection function of the node. However, this type of node still faces problems in practical applications, such as complex construction, high processing precision requirements, and significant on-site construction difficulties, affecting its promotion and application efficiency in engineering projects.

[0006] Therefore, in view of the shortcomings of the existing technology, there is an urgent need for a connection node structure that is simple to construct, easy to build, and has strong structural performance in order to improve the mechanical properties of the connection node. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a connection node for staggered stacked steel structure modules, which solves the technical problems of the existing connection nodes using capped studs, which are complex in structure, require high processing precision, and are difficult to construct.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] This utility model provides a connection node for staggered stacked steel structure modules. The steel structure modules include an upper module and a lower module. The connection node includes two sets of connection components arranged opposite each other. Each connection component includes a horizontally arranged connection end plate, an outer sleeve and an inner sleeve that are vertically connected to the connection end plate and horizontally spaced apart. The inner wall of the outer sleeve and the outer wall of the inner sleeve are provided with annular protrusions. The two connection components are connected to the bottom of the upper module and the top of the lower module respectively by their connection end plates and the outer sleeves. The upper outer sleeve and the inner sleeve can be inserted into the lower inner sleeve and the outer sleeve, and the inner sleeve after corresponding insertion is located inside the outer sleeve, and a grouting space is formed between the two for injecting grout to fix the upper module and the lower module together.

[0012] Preferably, the plurality of annular protrusions on the inner wall of the outer sleeve are arranged vertically and evenly and at intervals along the axis of the outer sleeve, and the plurality of annular protrusions on the outer wall of the inner sleeve are arranged vertically and evenly and at intervals along the axis of the inner sleeve; on the correspondingly inserted outer sleeve and inner sleeve, the annular protrusions are staggered in the vertical direction.

[0013] Preferably, the outer contours of the plurality of annular protrusions protruding from the outer wall of the outer sleeve and the inner wall of the inner sleeve are all arc-shaped.

[0014] Preferably, the outer sleeve, the inner sleeve, and the annular protrusion all have rectangular cross-sections.

[0015] Preferably, the connecting assembly further includes a plurality of stiffening ribs; the plurality of stiffening ribs are respectively fixedly connected to the inner wall of the outer sleeve at the four corners near the connecting end plate.

[0016] Preferably, there is a horizontal gap between the stiffening rib and the annular protrusion on the outer wall of the inner sleeve that is inserted into the outer sleeve corresponding to it.

[0017] Preferably, a gap is provided between the end of the inner sleeve that is away from the connecting end plate after insertion and the connecting end plate that is connected to the outer sleeve, and the gap is in communication with the grouting space.

[0018] Preferably, the upper module includes an upper beam and an upper column; the lower module includes a lower beam and a lower column; the upper connecting end plate is fixedly connected to the bottom of the upper column, and the upper outer sleeve is fixedly connected to the end of the upper beam facing the upper column; the lower connecting end plate is fixedly connected to the top of the lower column, and the lower outer sleeve is fixedly connected to the end of the lower beam facing the lower column.

[0019] Preferably, the upper column is provided with a grout storage chamber, and the outer wall of the upper column is provided with a grouting port communicating with the grout storage chamber. A grouting pipe is inserted into the grouting port. The upper connecting end plate is provided with multiple grouting holes and multiple grouting outlet holes. The multiple grouting holes communicate with the grout storage chamber and the lower outer sleeve, and the multiple grouting outlet holes communicate with the outside and the lower outer sleeve. The grouting pipe can inject the grouting material into the grout storage chamber, so that the grouting material is injected into the grouting space through the multiple grouting holes communicating with the grout storage chamber. After the grouting space is full, the grouting material overflows from the multiple grouting outlet holes.

[0020] (III) Beneficial Effects

[0021] The beneficial effects of this utility model are:

[0022] This invention utilizes a connecting end plate, an outer sleeve, and an inner sleeve as a set of connecting components. These components connect to the upper and lower modules respectively, enabling rapid positioning and installation in staggered stacked steel structure modules. The outer sleeve and inner sleeve can be directly plugged in for assembly, and grouting material is injected into the grouting space to secure the upper and lower modules, thus achieving rapid installation of the steel structure modules, improving construction efficiency, and reducing construction difficulty. The annular protrusions on the inner wall of the outer sleeve and the outer wall of the inner sleeve enhance the pull-out resistance of the connection joint. The inner sleeve acts as a pull-out resistant component; the tension in the inner sleeve is transmitted to the inner wall of the outer sleeve through short columns of pressurized grouting material formed by the annular protrusions on its outer and inner walls, effectively converting and transmitting force, thereby improving the overall stress performance and safety reliability of the connection joint. Furthermore, the annular protrusions on the inner and outer walls of the outer sleeve can be formed by fillet welding of the rigid pad layer or by integral casting. Existing capped studs require precise positioning during installation, which greatly increases the difficulty of manufacturing and construction, making it hard to guarantee processing quality and increasing production complexity. In contrast, the annular protrusion structure in this invention has a simple shape, significantly reduces production difficulty, greatly improves production efficiency, and makes processing quality easier to control. Attached Figure Description

[0023] Figure 1This is a schematic cross-sectional view of the connection node of an interlaced stacked steel structure module after installation, according to the present invention.

[0024] Figure 2 This is a cross-sectional structural diagram of the connection nodes of an interlaced stacked steel structure module during alignment and positioning according to this utility model.

[0025] Figure 3 This is a cross-sectional structural diagram of the connection node of an interlaced stacked steel structure module of the present invention during insertion.

[0026] Figure 4 This is a cross-sectional structural diagram of the connection nodes of an interlaced stacked steel structure module after insertion according to the present invention.

[0027] Figure 5 This is a cross-sectional structural diagram of the connection node of an interlaced stacked steel structure module during casting according to the present invention.

[0028] Figure 6 This is a top sectional view of a set of connecting components for the connection nodes of an interlocking stacked steel structure module according to the present invention.

[0029] Figure 7 This is a cross-sectional schematic diagram of the corresponding insertion of the outer sleeve and inner sleeve of the connection node of the staggered stacked steel structure module of this utility model, in which the annular protrusions on the outer sleeve and the grouting material form a short column of pressurized grouting material.

[0030] [Explanation of Labels in the Attached Image]

[0031] 1: Upper module; 11: Upper beam; 12: Upper column; 121: Grouting port; 122: Grout storage chamber; 2: Lower module; 21: Lower beam; 22: Lower column; 3: Connecting component; 31: Connecting end plate; 311: Grouting hole; 3111: First hole; 3112: Second hole; 312: Grout outlet hole; 3121: Third hole; 3122: Fourth hole; 32: Outer sleeve; 33: Inner sleeve; 34: Annular protrusion; 4: Grouting space; 5: Grouting material; 6: Stiffening rib; 7: Grouting pipe; 8: Pressurized grouting material short column. Detailed Implementation

[0032] 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.

[0033] Example 1

[0034] In a connection node of an interleaved stacked steel structure module in this embodiment, the steel structure module includes an upper module 1 and a lower module 2, and the connection node includes two sets of connection components 3 arranged opposite to each other.

[0035] Specifically, such as Figures 1-5 As shown, each connecting component 3 includes a horizontally arranged connecting end plate 31, an outer sleeve 32 and an inner sleeve 33, both vertically connected to the connecting end plate 31 and horizontally spaced apart. Both the inner wall of the outer sleeve 32 and the outer wall of the inner sleeve 33 are provided with annular protrusions 34. The two connecting components 3 are connected to the bottom of the upper module 1 and the top of the lower module 2 respectively via their connecting end plates 31 and outer sleeves 32. The upper outer sleeve 32 and inner sleeve 33 can be inserted into the lower inner sleeve 33 and outer sleeve 32. After insertion, the inner sleeve 33 is located inside the outer sleeve 32, forming a grouting space 4 between them for injecting grouting material 5 to fix the upper module 1 and lower module 2 together. By setting up a connecting end plate 31, an outer sleeve 32, and an inner sleeve 33, which together form a set of connecting components 3, and connecting to the upper module 1 and the lower module 2 respectively through the two sets of connecting components 3, rapid positioning and installation can be achieved in the staggered stacked steel structure modules. The outer sleeve 32 and the inner sleeve 33 can be directly plugged into each other for assembly, and by injecting grout 5 into the grouting space 4, the upper module 1 and the lower module 2 can be fixedly connected, thereby achieving rapid installation of the steel structure modules, improving construction efficiency and reducing construction difficulty. By providing annular protrusions 34 on the inner wall of the outer sleeve 32 and the outer wall of the inner sleeve 33, the pull-out resistance of the connection nodes can be enhanced, i.e. Figure 7 As shown, the inner sleeve 33 acts as an anti-pull-out component. The tensile force of the inner sleeve 33 is transmitted to the inner wall of the outer sleeve 32 through the short columns 8 of pressurized grout formed by the annular protrusions 34 on its outer wall and the inner wall of the outer sleeve 32, thus forming an effective force conversion and transmission, thereby improving the overall stress performance and safety reliability of the connection node. Moreover, the annular protrusions 34 provided on the inner wall of the outer sleeve 32 and the outer wall of the inner sleeve 33 can be formed by fillet weld of the rigid pad layer or by integral casting. The capped studs in the prior art require precise positioning during installation, which is extremely difficult to manufacture and construct, making it difficult to guarantee processing quality and increasing production difficulty. In contrast, the annular protrusions 34 in this embodiment have a simple structure, significantly reducing production difficulty, significantly improving production efficiency, and making it easier to control processing quality.

[0036] It should be noted that the inner sleeve 33 is a closed structure, that is, it has an inner cavity, and the end away from the connecting end plate 31 is closed, thereby preventing the grouting material 5 from entering the inner cavity of the inner sleeve 33.

[0037] Furthermore, such as Figure 2The multiple annular protrusions 34 on the inner wall of the outer sleeve 32 are arranged vertically and evenly at intervals along the axis of the outer sleeve 32. Similarly, the multiple annular protrusions 34 on the outer wall of the inner sleeve 33 are arranged vertically and evenly at intervals along the axis of the inner sleeve 33. This arrangement allows the pressure-bearing grouting material short columns 8 formed by the annular protrusions 34 on the outer wall of the inner sleeve 33 and the inner wall of the outer sleeve 32 to uniformly, continuously, and efficiently transfer the tension to the outer sleeve 32 when the inner sleeve 33 is under tension, thereby improving force transmission and conversion. Figure 4 As shown, on the corresponding inserted outer sleeve 32 and inner sleeve 33, the annular protrusions 34 are staggered in the vertical direction, which can enhance the connection stability between the grouting material 5 and the outer sleeve 32 and inner sleeve 33, effectively improve the load-bearing capacity and deformation coordination capacity of the connection node under tension, and thus significantly improve the overall structural safety and stress uniformity of the connection node.

[0038] Furthermore, the outer contours of the multiple annular protrusions 34 protruding from the outer wall of the outer sleeve 32 and the inner wall of the inner sleeve 33 are all arc-shaped. This reduces the friction between the grout 5 and the annular protrusions 34 when the grout 5 is injected into the grouting space 4, allowing the grout 5 to enter the grouting space 4 more smoothly and fill it. This can be achieved without complex processes, improving grouting efficiency. In the prior art, capped studs, due to the different diameters of the cap and the stud, result in greater friction between the capped stud and the grout 5, making it difficult for the grout 5 to flow smoothly into the grouting space 4. Moreover, this may lead to local voids or incomplete compaction of the injected grout 5, affecting the final structural strength and durability. Compared to the capped studs in the prior art, the annular protrusion 34 in this embodiment is arc-shaped, which can reduce the friction between the grout 5 and the annular protrusion 34, so that the grout 5 can smoothly enter the grouting space 4, thereby improving the density of the grout 5 and avoiding the presence of voids in the grout 5 after injection.

[0039] Furthermore, such as Figure 6 As shown, the transverse cross-sections of the outer sleeve 32, inner sleeve 33, and annular protrusion 34 are all rectangular, which has stronger torsional resistance and helps to enhance the overall stability and load-bearing performance of the connection node under multi-directional stress.

[0040] Furthermore, such as Figure 6 As shown, the connecting assembly 3 also includes multiple stiffening ribs 6. The multiple stiffening ribs 6 are respectively fixedly connected to the inner wall of the four corners of the outer sleeve 32 near the connecting end plate 31. They can improve the local stiffness and load-bearing capacity of the outer sleeve 32 under compression and bending conditions, suppress local buckling or instability caused by concentrated force, and thus enhance the overall structural reliability and durability of the connecting node under complex loads.

[0041] Furthermore, such as Figure 4 As shown, there is a horizontal gap between the stiffening rib 6 and the annular protrusion 34 on the outer wall of the inner sleeve 33 that is inserted into the outer sleeve 32. This effectively avoids interference between the stiffening rib 6 and the annular protrusion 34 during the insertion process of the corresponding outer sleeve 32 and inner sleeve 33, ensuring smooth assembly between the outer sleeve 32 and inner sleeve 33, thereby improving the construction quality of the connection node and the stability of the steel structure module.

[0042] Furthermore, such as Figure 4 As shown, a gap is provided between the end of the inner sleeve 33 that is furthest from the connecting end plate 31 it is connected to and the connecting end plate 31 that is connected to the outer sleeve 32. The gap communicates with the grouting space 4. This gap can prevent a hard collision between the inner sleeve 33 and the connecting end plate 31. Since the inner diameter of the inner sleeve 33 is small, it can prevent deformation, bending or damage after the inner sleeve 33 collides with the connecting end plate 31, thereby improving the structural stability of the inner sleeve 33 and the connecting end plate 31. Moreover, the gap can also help improve the density of the grout 5 and provide a buffer for the stress redistribution of the connection node under stress, thereby enhancing the overall adaptability and durability of the connection node.

[0043] Furthermore, such as Figure 2 As shown, the upper module 1 includes an upper beam 11 and an upper column 12. The lower module 2 includes a lower beam 21 and a lower column 22. The upper connecting end plate 31 is fixedly connected to the bottom of the upper column 12, and the upper outer sleeve 32 is fixedly connected to the end of the upper beam 11 facing the upper column 12. The lower connecting end plate 31 is fixedly connected to the top of the lower column 22, and the lower outer sleeve 32 is fixedly connected to the end of the lower beam 21 facing the lower column 22. This allows the upper module 1 and the lower module 2 to form a complete force-bearing system with the two sets of connecting components 3, enabling the connecting nodes to effectively transmit the horizontal loads and bending moments from the upper module 1, ensuring the continuity of the vertical force transmission path between the connecting nodes and the lower module 2, making the steel structure modules more stable and robust, and improving the stability and safety of the staggered stacked steel structure modules under complex stress conditions.

[0044] Furthermore, such as Figures 1-5As shown, the upper column 12 is equipped with a grout storage chamber 122 for temporary storage of grout 5. Because there are slight gaps between the bottom of the upper outer sleeve 32 and the lower connecting end plate 31 when the two sets of connecting components 3 are inserted, the grout 5 may overflow from these gaps when it is injected into the grouting space 4, affecting its density. By providing the grout storage chamber 122, grout 5 can be injected into the grouting space 4 in real time. Even if some grout 5 overflows from the gaps, the grout 5 in the storage chamber 122 replenishes the grouting space 4, ensuring the density of the grout 5 within the grouting space 4. A grouting port 121 communicating with the grout storage chamber 122 is provided on the outer wall of the upper column 12. A grouting pipe 7 is inserted into the grouting port 121 for injecting grout 5 into the storage chamber 122 through the grouting port 121. The upper connecting end plate 31 has multiple injection holes and multiple outlet holes 312. The injection holes connect the grout storage chamber 122 to the outer sleeve 32 below, allowing the grout 5 to flow from the storage chamber 122 into the grouting space 4 between the outer sleeve 32 and the inner sleeve 33 from top to bottom. The outlet holes 312 connect to the outside and the outer sleeve 32 below, used to expel air and excess grout 5 generated during the grouting process. They also serve as observation windows to determine whether the grout 5 has been compacted and grouting is complete. That is, when the grout 5 overflows from the outlet holes 312, the grout 5 has filled the grouting space 4. The injection pipe 7 can inject the grout 5 into the storage chamber 122, so that the grout 5 is injected into the grouting space 4 through the multiple injection holes connected to the storage chamber 122. After the grout 5 fills the grouting space 4, it overflows from the multiple outlet holes 312.

[0045] Furthermore, such as Figures 1-5 As shown, the grouting holes include a first hole 3111 and a second hole 3112. The grout outlet 312 includes a third hole 3121 and a fourth hole 3122. The first hole 3111, the second hole 3112, the third hole 3121, and the fourth hole 3122 are all located on the upper connecting end plate 31. The first hole 3111 and the second hole 3112 communicate with the grout storage chamber 122 and the outer sleeve 32 below it, while the third hole 3121 and the fourth hole 3122 communicate with the outside and the outer sleeve 32 below it. Figure 7Specifically, the third hole 3121 is located to the left of the first hole 3111, and the fourth hole 3122 is located to the right of the second hole 3112, with the third hole 3121 and the fourth hole 3122 respectively facing the two grouting spaces 4. During grouting, the first hole 3111 and the third hole 3121 form a grouting path, and the second hole 3112 and the fourth hole 3122 form a grouting path, thereby achieving the filling of the grouting material 5. Preferably, the axis of the first hole 3111 is aligned with the axis of the outer sleeve 32 and the axis of the inner sleeve 33, so that the grouting material 5 flows from the grout storage chamber 122 through the first hole 3111, passes through the top wall of the inner sleeve 33 installed on the lower connecting end plate 31, and simultaneously flows into the grouting spaces 4 in opposite directions, thereby ensuring that the grouting material 5 travels the same distance and at the same rate into the grouting spaces 4, increasing the grouting rate, increasing the density of the grouting material 5, and increasing work efficiency. Once the grouting material 5 fills the grouting space 4, it overflows from the third hole 3121, allowing for direct observation of whether the grouting material 5 is full. Since the inner sleeve 33 is a closed structure, the second hole 3112 can only be located above the grouting space 4 formed by the upper inner sleeve 33 and the lower outer sleeve 32. The grouting material 5 enters the grouting space 4 directly from the storage chamber 122 through the second hole 3112, gradually filling the grouting space 4. When the grouting material 5 overflows from the fourth hole 3122, the grouting space 4 is full, completing the grouting process. Of course, the first hole 3111, second hole 3112, third hole 3121, and fourth hole 3122 are simply four types of holes classified according to their location and function, not a number. Depending on the size and space of the connecting end plate 31, one or more of the first hole 3111, second hole 3112, third hole 3121, and fourth hole 3122 can be provided.

[0046] Additionally, it should be noted that the staggered stacking of steel structure modules refers to the arrangement of adjacent modules at intervals within the same floor. Between two vertically adjacent floors, the modules are stacked in a staggered manner according to a certain offset relationship, forming a spatial layout of "staggered inter-floor, spaced intra-floor". For example, taking an upper module 1 as an example, the left column of upper module 1 corresponds to the left or right column of lower module 2, and the right column of upper module 1 corresponds to the right or left column of lower module 2. This makes the overall building's stress distribution closer to that of a traditional cast-in-place or steel frame structure, avoiding the redundant component problems such as "double columns, double beams, and double slabs" commonly found in traditional "vertically aligned" modular buildings. This effectively reduces steel consumption, improves space utilization, and enhances the building's ability to adapt to complex functional requirements. Specifically, a set of connecting components 3 is installed at the top four corners of a steel structure module, that is, at both ends of the upper beam 11 and the top of the two columns in the same steel structure module; and a set of connecting components 3 is installed at both ends of the lower beam 21 and the bottom of the two columns in the same steel structure module. In other words, a steel structure module has four sets of connecting components 3. Furthermore, the two sets of connecting components 3 on the upper beam 11 of a steel structure module are positioned opposite to the two sets of connecting components 3 on the lower beam 21 of the same steel structure module. When modules of two vertically adjacent floors are stacked in an alternating manner, it is only necessary to insert the two sets of connecting components 3 at the bottom of the upper module 1 with the two sets of connecting components 3 at the top of the opposite sides of the two lower modules 2, and then inject grout 5 after insertion. This allows for faster installation of the upper module 1 and the two lower modules 2, thus enabling quicker positioning during the alternating stacking of steel structure modules, improving construction efficiency, and saving construction time.

[0047] Example 2

[0048] This embodiment provides a method for installing the staggered stacked steel structure modules from Embodiment 1, comprising the following steps:

[0049] S1: As Figure 2 As shown, two connecting end plates 31 are horizontally installed at the bottom of the upper column 12 and the top of the lower column 22 in the steel structure module, respectively. Two outer sleeves 32 are vertically connected to the upper beam 11 and the lower beam 21, respectively. The upper outer sleeve 32 is positioned opposite to the lower inner sleeve 33, and the upper inner sleeve 33 is positioned opposite to the lower outer sleeve 32.

[0050] S2: Move the upper module 1 and the lower module 2 so that the upper outer sleeve 32 is aligned with the axis of the lower inner sleeve 33, and the upper inner sleeve 33 is aligned with the axis of the lower outer sleeve 32.

[0051] S3: As Figure 3As shown, the upper module 1 is lowered vertically so that the upper outer sleeve 32 is fitted over the lower inner sleeve 33, and the upper inner sleeve 33 is inserted into the lower outer sleeve 32, as shown. Figure 4 As shown, a grouting space 4 is formed between the two.

[0052] S4: As Figure 5 As shown, a grouting pipe 7 is inserted at the grouting port 121, and grouting material 5 is injected into the grout storage chamber 122 through the grouting pipe 7. The grouting material 5 enters the two grouting spaces 4 through the first hole 3111 and the second hole 3112 respectively, until the grouting material 5 steadily overflows from the third hole 3121 and the fourth hole 3122 respectively, then the grouting is stopped and the grouting is completed.

[0053] S5: As Figure 1 As shown, after the grout 5 has solidified, the upper module 1 and the lower module 2 are fixedly connected.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 connection node for staggered stacked steel structure modules, the steel structure modules comprising an upper module (1) and a lower module (2), characterized in that, The connection node includes two sets of connection components (3) arranged vertically opposite each other; Each of the connecting components (3) includes a horizontally arranged connecting end plate (31), an outer sleeve (32) and an inner sleeve (33) that are vertically connected to the connecting end plate (31) and horizontally spaced apart. The inner wall of the outer sleeve (32) and the outer wall of the inner sleeve (33) are provided with annular protrusions (34). The two connecting components (3) are connected to the bottom of the upper module (1) and the top of the lower module (2) respectively by their connecting end plates (31) and outer sleeves (32). The upper outer sleeve (32) and the inner sleeve (33) can be inserted into the lower inner sleeve (33) and the outer sleeve (32). After being inserted, the inner sleeve (33) is located inside the outer sleeve (32) and a grouting space (4) is formed between them for injecting grout (5) to fix the upper module (1) and the lower module (2) together.

2. The connection node of the staggered stacked steel structure modules as described in claim 1, characterized in that: The multiple annular protrusions (34) on the inner wall of the outer sleeve (32) are arranged vertically and evenly and at intervals along the axis of the outer sleeve (32), and the multiple annular protrusions (34) on the outer wall of the inner sleeve (33) are arranged vertically and evenly and at intervals along the axis of the inner sleeve (33). On the correspondingly inserted outer sleeve (32) and inner sleeve (33), the annular protrusions (34) of the two are staggered in the vertical direction.

3. The connection node of the staggered stacked steel structure modules as described in claim 2, characterized in that: The outer contours of the plurality of annular protrusions (34) protruding from the outer wall of the outer sleeve (32) and the inner wall of the inner sleeve (33) are all arc-shaped.

4. The connection node of the staggered stacked steel structure modules as described in claim 1, characterized in that: The transverse cross-sections of the outer sleeve (32), the inner sleeve (33), and the annular protrusion (34) are all rectangular.

5. The connection node of the staggered stacked steel structure modules as described in claim 4, characterized in that: The connecting component (3) also includes a plurality of stiffening ribs (6); Multiple stiffening ribs (6) are fixedly connected to the inner wall of the outer sleeve (32) at the four corners near the connecting end plate (31).

6. The connection node of the staggered stacked steel structure modules as described in claim 5, characterized in that: The stiffening rib (6) and the annular protrusion (34) on the outer wall of the inner sleeve (33) to which it is inserted are spaced apart in the horizontal direction.

7. The connection node of the staggered stacked steel structure modules as described in claim 1, characterized in that: A gap is provided between the end of the inner sleeve (33) that is far from the connecting end plate (31) to which it is connected and the connecting end plate (31) to which the outer sleeve (32) is connected, and the gap is in communication with the grouting space (4).

8. The connection node of the staggered stacked steel structure modules as described in claim 1, characterized in that: The upper module (1) includes an upper beam (11) and an upper column (12); The lower module (2) includes a lower beam (21) and a lower column (22); The connecting end plate (31) located above is fixedly connected to the bottom of the upper column (12), and the outer sleeve (32) located above is fixedly connected to one end of the upper beam (11) facing the upper column (12); The connecting end plate (31) located below is fixedly connected to the top of the lower column (22), and the outer sleeve (32) located below is fixedly connected to one end of the lower beam (21) facing the lower column (22).

9. The connection node of the staggered stacked steel structure modules as described in claim 8, characterized in that: The upper column (12) is provided with a grout storage chamber (122), and the outer wall of the upper column (12) is provided with a grouting port (121) communicating with the grout storage chamber (122), and a grouting pipe (7) is inserted into the grouting port (121); The connecting end plate (31) located above is provided with a plurality of grouting holes (311) and a plurality of grouting holes (312). The plurality of grouting holes (311) are connected to the grout storage chamber (122) and the outer sleeve (32) below it, and the plurality of grouting holes are connected to the outside and the outer sleeve (32) below it. The grouting pipe (7) can inject the grouting material (5) into the grout storage chamber (122) so that the grouting material (5) is injected into the grouting space (4) through a plurality of grouting holes (311) connected to the grout storage chamber (122), and the grouting material (5) overflows from the plurality of grout outlet holes (312) after filling the grouting space (4).

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