Modular building and column connection node structure and construction method thereof

Abstract

The application relates to the technical field of building construction, and discloses a node structure of modular building and column connection and a construction method thereof, which comprises a first steel column, a second steel column, and a connecting plate. The first steel column is provided with a first pouring cavity and a first plug-in part. The second steel column is provided with a second pouring cavity and a second plug-in part which is vertically inserted into the first plug-in part. The first steel column, the second steel column, the first plug-in part and the second plug-in part form a third pouring cavity. The connecting plate is connected with the bottom of the first steel column, the second steel column, the first plug-in part and the second plug-in part. The first plug-in part and the second plug-in part are inserted into each other, and concrete is poured into the first pouring cavity, the second pouring cavity and the third pouring cavity, so that the first steel column and the second steel column are connected, discrete module units are connected into an integral unit, the overall performance of the structure is improved, and the bearing capacity of the modular building is improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to the node structure for connecting columns in modular buildings and its construction method. Background Technology

[0002] Modular construction is beneficial for comprehensively improving building quality, reducing environmental pollution and ecological damage, and aligns with the national green development concept and the policy orientation of building a resource-saving society. As a new type of building, modular construction has experienced rapid development in my country in recent years due to its superior performance and distinctive features. Connection nodes are the core technology of modular design; the selection of nodes directly affects structural safety, economy, and construction convenience. The nodes are not entirely identical for each project, lacking standardization and universality, which limits its application and promotion. Currently, each module in modular construction is a discrete unit; each module must not only meet its own strength requirements but also the overall structural load-bearing requirements of the building, resulting in relatively poor structural integrity. Summary of the Invention

[0003] In view of this, the present invention provides a nodal structure for connecting columns in modular buildings and its construction method, in order to solve the problem that each module in a modular building is a discrete unit and the overall structural integrity is relatively poor.

[0004] This invention provides a modular building column connection node structure, comprising: a first steel column with a protruding first insertion part disposed on the side wall of the first steel column, the first steel column having a first casting cavity; a second steel column arranged parallel to and spaced apart from the first steel column, the second steel column having a protruding second insertion part on its side wall near the first insertion part, the second insertion part being vertically inserted into the first insertion part, the second steel column having a second casting cavity; and the first steel column, the second steel column, the first insertion part, and the second insertion part enclosing a third casting cavity; and a connecting plate connected to the bottom of the first steel column, the second steel column, the first insertion part, and the second insertion part, and sealing the bottom surface of the first casting cavity, the bottom surface of the second casting cavity, and the bottom surface of the third casting cavity.

[0005] Beneficial effects: By interlocking the first and second plug-in parts and pouring concrete into the first, second, and third pouring cavities, the first and second steel columns are connected side by side, allowing the independent double columns to bear the load together. This connects the discrete modular units into an integral unit, improving the overall structural performance and the load-bearing capacity of the modular building.

[0006] In one optional embodiment, the first plug-in portion has a first bending structure forming a first plug-in space, the second plug-in portion has a second bending structure forming a second plug-in space, the first bending structure is inserted into the second plug-in space, and the second bending structure is inserted into the first plug-in space, so that the second plug-in portion and the first plug-in portion are engaged.

[0007] Beneficial effects: By inserting the first bending structure and the second bending structure into the second insertion space and the first insertion space respectively, the first steel column and the second steel column are connected. This eliminates the need to locate the relative position between the first steel column and the second steel column during installation, thus improving the installation accuracy of the first steel column and the second steel column.

[0008] In one optional embodiment, there are two first plug-in portions, which are arranged on opposite sides of the side wall of the first steel column near the second steel column. There are also two second plug-in portions, which are arranged on opposite sides of the side wall of the second steel column facing the first steel column. The two first plug-in portions and the two second plug-in portions are connected in a one-to-one correspondence.

[0009] In one optional embodiment, a first grout passage hole is provided on the side wall of the first steel column near the second steel column, and a second grout passage hole is provided on the side wall of the second steel column near the first steel column. The first grout passage hole and the second grout passage hole are sequentially connected to the first casting cavity, the third casting cavity and the second casting cavity.

[0010] Beneficial effects: By setting the first and second grout passage holes, it is easier to pour the first, second and third pouring cavities, thus improving the convenience of construction.

[0011] In one optional embodiment, the modular building column connection node structure further includes a first steel cage structure and a second steel cage structure, wherein the first steel cage structure is disposed in the first casting cavity and the second steel cage structure is disposed in the second casting cavity.

[0012] Beneficial effects: By setting up a first steel cage structure and a second steel cage structure, the strength of the poured concrete is higher, which is conducive to further improving the connection performance of the first steel column and the second steel column.

[0013] In one optional embodiment, the modular building column connection node structure further includes a first sleeve and a second sleeve. The first sleeve is disposed in the first casting cavity and connects the connecting plate and the first reinforcing cage structure, and the second sleeve is disposed in the second casting cavity and connects the connecting plate and the second reinforcing cage structure.

[0014] Beneficial effects: By setting the first sleeve and the second sleeve to connect the first steel cage structure and the second steel cage structure to the connecting plate, the connection performance between the first steel cage structure and the second steel cage structure and the connecting plate is improved, thereby further improving the connection strength between the concrete and the connecting plate after the concrete is poured.

[0015] In one optional embodiment, a plurality of first sleeves are provided, the first reinforcing cage structure includes a plurality of first vertical reinforcing bars and a plurality of first horizontal reinforcing bars, the lower ends of the plurality of first sleeves are connected to the connecting plate, the lower ends of the plurality of first vertical reinforcing bars are connected to the upper ends of the plurality of first sleeves, and the plurality of first horizontal reinforcing bars are connected to the plurality of first vertical reinforcing bars.

[0016] In one optional embodiment, a plurality of second sleeves are provided, the second reinforcing cage structure includes a plurality of second vertical reinforcing bars and a plurality of second horizontal reinforcing bars, the lower ends of the plurality of second sleeves are connected to the connecting plate, the lower ends of the plurality of second vertical reinforcing bars are connected to the upper ends of the plurality of second sleeves, and the plurality of second horizontal reinforcing bars are connected to the plurality of second vertical reinforcing bars.

[0017] In one optional embodiment, the modular building and column-connected node structure further includes a plurality of steel beams, which are respectively connected to the first steel column and the second steel column.

[0018] Secondly, the present invention also provides a construction method for column connection, applied to the above-mentioned modular building column connection node structure, including the following steps: S1: positioning and installing the connecting plate in the modular building; S2: installing the first steel column on the connecting plate; S3: interlocking the second plug-in part with the first plug-in part to install the second steel column onto the connecting plate; S4: pouring concrete or grout into the first pouring cavity, the second pouring cavity and the third pouring cavity. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the modular building column connection node structure according to an embodiment of the present invention;

[0021] Figure 2 This is a top view of the modular building and column connection node structure according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the first steel cage structure, the second steel cage structure, and the connecting plate of the modular building column connection node structure according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First steel column; 101. First casting cavity; 2. Second steel column; 201. Second casting cavity; 3. First insertion part; 4. Second insertion part; 5. Third casting cavity; 6. Connecting plate; 7. First grout passage hole; 8. Second grout passage hole; 9. First reinforcing cage structure; 901. First vertical reinforcing bar; 902. First horizontal reinforcing bar; 10. Second reinforcing cage structure; 1001. Second vertical reinforcing bar; 1002. Second horizontal reinforcing bar; 11. First sleeve; 12. Second sleeve; 13. Steel beam. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0027] According to embodiments of the present invention, in one aspect, such as Figure 1 and Figure 2As shown, a modular building joint structure with connecting columns is provided, including: a first steel column 1, a second steel column 2, and a connecting plate 6. The first steel column 1 has a protruding first insertion part 3, which is disposed on the side wall of the first steel column 1. The first steel column 1 has a first casting cavity 101. The second steel column 2 is arranged parallel to and spaced apart from the first steel column 1. A second insertion part 4 protrudes from the side wall of the second steel column 2 near the first insertion part 3, and the second insertion part 4 is vertically inserted into the first insertion part 3. The second steel column 2 has a second casting cavity 201. The first steel column 1, the second steel column 2, the first insertion part 3, and the second insertion part 4 enclose a third casting cavity 5. The connecting plate 6 connects to the bottom of the first steel column 1, the second steel column 2, the first insertion part 3, and the second insertion part 4, and seals the bottom surfaces of the first casting cavity 101, the second casting cavity 201, and the third casting cavity 5.

[0028] By interlocking the first plug-in part 3 and the second plug-in part 4 and pouring concrete into the first pouring cavity 101, the second pouring cavity 201 and the third pouring cavity 5, the first steel column 1 and the second steel column 2 are connected side by side, so that the independent double columns can be subjected to joint force, and the discrete modular units can be connected into an integral unit, thereby improving the overall structural performance and the load-bearing capacity of the modular building.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the second steel column 2 is disposed on one side of the protruding end of the first insertion part 3, so that the first steel column 1 and the second steel column 2 are arranged side by side and spaced apart.

[0030] It should be noted that high-rise steel structure buildings have high requirements for fire resistance. Therefore, columns often require thick-coated fire-retardant paint or fireproof panels to meet the fire resistance requirements. However, thick-coated fire-retardant paint is easily damaged during transportation, and finished product protection is difficult to achieve. Fireproof panels need to be installed after the modules are installed, and the spaces between columns need to be filled with rock, making construction relatively complex and labor-intensive. Therefore, in this embodiment, by pouring concrete into the first casting cavity 101, the second casting cavity 201, and the third casting cavity 5, the fire resistance of the first steel column 1 and the second steel column 2 is enhanced, meeting the requirement of a fire resistance of not less than 3 hours for high-rise structures. This eliminates the need to apply fire-retardant paint or fireproof panels to the columns to meet the fire resistance requirements, saving costs.

[0031] It should be noted that in modular buildings, there are double beams and double columns between the modules, which can lead to gaps. However, in this embodiment, there is no gap between the first steel column 1 and the second steel column 2, and the cross-section of the column behind the column is smaller than that of the double column with gaps. This reduces the area occupied by the structural columns in the building, increases the usable space, and improves the floor area ratio.

[0032] It should be noted that the steel beams 13 and steel columns in the modular building structure not only need to meet their own stress requirements, but also the stress and seismic requirements of the entire building. Since there is no connection between the modular beam units, steel columns with large cross sections or thick walls are required to meet the load-bearing requirements. The modular units use a large amount of steel and have high costs. In this embodiment, by connecting the first steel column 1 and the second steel column 2 through the first insertion part 3 and the second insertion part 4, and using concrete pouring to merge the two columns into a single column, the load-bearing capacity of the first steel column 1 and the second steel column 2 is effectively improved.

[0033] In one embodiment, such as Figure 1 and Figure 2 As shown, the first insertion part 3 has a first bending structure forming a first insertion space, and the second insertion part 4 has a second bending structure forming a second insertion space. The first bending structure is inserted into the second insertion space, and the second bending structure is inserted into the first insertion space, so that the second insertion part 4 and the first insertion part 3 are engaged. By inserting the first bending structure and the second bending structure into the second insertion space and the first insertion space respectively, the first steel column 1 and the second steel column 2 are connected, eliminating the need to locate the relative positions of the first steel column 1 and the second steel column 2 during installation, thus improving the installation accuracy of the first steel column 1 and the second steel column 2.

[0034] In one embodiment, such as Figure 1 and Figure 2 As shown, there are two first plug-in parts 3, which are located on opposite sides of the side wall of the first steel column 1 near the second steel column 2. There are also two second plug-in parts 4, which are located on opposite sides of the side wall of the second steel column 2 facing the first steel column 1. The two first plug-in parts 3 and the two second plug-in parts 4 are connected in a one-to-one correspondence.

[0035] In one embodiment, such as Figure 1 As shown, a first grout passage hole 7 is provided on the side wall of the first steel column 1 near the second steel column 2, and a second grout passage hole 8 is provided on the side wall of the second steel column 2 near the first steel column 1. The first grout passage hole 7 and the second grout passage hole 8 are sequentially connected to the first pouring cavity 101, the third pouring cavity 5, and the second pouring cavity 201. By providing the first grout passage hole 7 and the second grout passage hole 8, it is convenient to pour the first pouring cavity 101, the second pouring cavity 201, and the third pouring cavity 5, thereby improving the convenience of construction.

[0036] In one embodiment, such as Figures 1 to 3As shown, the modular building's column connection node structure also includes a first reinforcing cage structure 9 and a second reinforcing cage structure 10. The first reinforcing cage structure 9 is located within the first pouring cavity 101, and the second reinforcing cage structure 10 is located within the second pouring cavity 201. By setting the first reinforcing cage structure 9 and the second reinforcing cage structure 10, the strength of the poured concrete is increased, which is beneficial to further improving the connection performance of the first steel column 1 and the second steel column 2.

[0037] It is worth noting that by setting the first steel cage structure 9 and the second steel cage structure 10 in the first steel column 1 and the second steel column 2, and pouring concrete, the column bases of the first steel column 1 and the second steel column 2 after pouring meet the rigid connection calculation assumption and the rigid connection requirements of the column bases of high-rise modules. No welding operation is required on the construction site, which simplifies the construction process and improves the construction efficiency.

[0038] In one embodiment, such as Figure 3 As shown, the modular building's column-connected node structure also includes a first sleeve 11 and a second sleeve 12. The first sleeve 11 is disposed within the first pouring cavity 101 and connects the connecting plate 6 and the first reinforcing cage structure 9. The second sleeve 12 is disposed within the second pouring cavity 201 and connects the connecting plate 6 and the second reinforcing cage structure 10. By using the first sleeve 11 and the second sleeve 12 to connect the first reinforcing cage structure 9 and the second reinforcing cage structure 10 to the connecting plate 6, the connection performance between the first reinforcing cage structure 9 and the second reinforcing cage structure 10 and the connecting plate 6 is improved, thereby further improving the connection strength between the concrete and the connecting plate 6 after pouring.

[0039] In one embodiment, such as Figure 3 As shown, there are several first sleeves 11, and the first steel cage structure 9 includes several first vertical steel bars 901 and several first horizontal steel bars 902. The lower ends of several first sleeves 11 are connected to the connecting plate 6, the lower ends of several first vertical steel bars 901 are connected to the upper ends of several first sleeves 11, and several first horizontal steel bars 902 are connected to several first vertical steel bars 901.

[0040] In one embodiment, such as Figure 3 As shown, several second sleeves 12 are provided, and the second steel cage structure 10 includes several second vertical steel bars 1001 and several second horizontal steel bars 1002. The lower ends of several second sleeves 12 are connected to the connecting plate 6, the lower ends of several second vertical steel bars 1001 are connected to the upper ends of several second sleeves 12, and several second horizontal steel bars 1002 are connected to several second vertical steel bars 1001.

[0041] In one embodiment, such as Figure 1 and Figure 2As shown, the modular building's column-connected node structure also includes several steel beams 13, which are respectively connected to the first steel column 1 and the second steel column 2.

[0042] According to an embodiment of the present invention, another aspect provides a construction method for column connection, applied to the above-mentioned modular building column connection node structure, comprising the following steps: S1: positioning and installing the connecting plate 6 in the modular building; S2: installing the first steel column 1 on the connecting plate 6; S3: interlocking the second plug-in part 4 with the first plug-in part 3 to install the second steel column 2 onto the connecting plate 6; S4: pouring concrete or grout into the first pouring cavity 101, the second pouring cavity 201 and the third pouring cavity 5.

[0043] Specifically, modular construction, as a new type of prefabricated building construction technology, uses digital design for standardized construction, enabling "building houses like building blocks". In this embodiment, the first steel column 1 and the second steel column 2 only need to be placed on the connecting plate 6, and then the first steel column 1 and the second steel column 2 are fixed by the first sleeve 11, the second sleeve 12, the first steel cage structure 9, and the second steel cage structure 10.

[0044] Specifically, in this embodiment, after positioning the connecting plate 6 in the modular building, the first steel cage structure 9 and the second steel cage structure 10 need to be connected to the connecting plate 6 through the first sleeve 11 and the second sleeve 12 respectively.

[0045] When using the modular building and column connection node structure of this embodiment, firstly, the position of the connecting plate 6 is located in the modular building; then, the first steel cage structure 9 and the second steel cage structure 10 are installed on the connecting plate 6; then, the first steel column 1 is installed; after that, the second steel column 2 is positioned and installed by inserting the second plug-in part 4 into the first plug-in part 3; finally, concrete or grout is poured into the first pouring cavity 101, the second pouring cavity 201 and the third pouring cavity 5, so that the first steel column 1 and the second steel column 2 are connected to form an integral structure.

[0046] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A modular building column connection node structure, characterized in that, include: The first steel column (1) has a first insertion part (3) protruding out. The first insertion part (3) is disposed on the side wall of the first steel column (1). The first steel column (1) has a first casting cavity (101). The second steel column (2) is arranged side by side with the first steel column (1) and spaced apart from each other. The second steel column (2) has a second plug-in part (4) protruding from the side wall near the first plug-in part (3). The second plug-in part (4) is vertically plugged into the first plug-in part (3). The second steel column (2) has a second casting cavity (201). The first steel column (1), the second steel column (2), the first plug-in part (3) and the second plug-in part (4) enclose a third casting cavity (5). The connecting plate (6) is connected to the bottom of the first steel column (1), the second steel column (2), the first plug-in part (3) and the second plug-in part (4), and seals the bottom surface of the first casting cavity (101), the bottom surface of the second casting cavity (201) and the bottom surface of the third casting cavity (5); The first plug-in part (3) has a first bending structure, the first bending structure forms a first plug-in space, the second plug-in part (4) has a second bending structure, the second bending structure forms a second plug-in space, the first bending structure is inserted into the second plug-in space, and the second bending structure is inserted into the first plug-in space, so that the second plug-in part (4) and the first plug-in part (3) are engaged. There are two first plug-in parts (3), and the two first plug-in parts (3) are arranged on opposite sides of the side wall of the first steel column (1) facing the second steel column (2). There are two second plug-in parts (4), and the two second plug-in parts (4) are arranged on opposite sides of the side wall of the second steel column (2) facing the first steel column (1). The two first plug-in parts (3) and the two second plug-in parts (4) are connected in a one-to-one correspondence. The first steel column (1) has a first grout passage hole (7) on its side wall near the second steel column (2), and the second steel column (2) has a second grout passage hole (8) on its side wall near the first steel column (1). The first grout passage hole (7) and the second grout passage hole (8) are connected in sequence to the first casting cavity (101), the third casting cavity (5), and the second casting cavity (201).

2. The modular building column connection node structure according to claim 1, characterized in that, The modular building and column connection node structure also includes a first steel cage structure (9) and a second steel cage structure (10). The first steel cage structure (9) is set in the first casting cavity (101), and the second steel cage structure (10) is set in the second casting cavity (201).

3. The modular building column connection node structure according to claim 2, characterized in that, The modular building and column connection node structure also includes a first sleeve (11) and a second sleeve (12). The first sleeve (11) is set in the first casting cavity (101) and connects the connecting plate (6) and the first steel cage structure (9). The second sleeve (12) is set in the second casting cavity (201) and connects the connecting plate (6) and the second steel cage structure (10).

4. The modular building column connection node structure according to claim 3, characterized in that, The first sleeve (11) is provided in several parts. The first steel cage structure (9) includes several first vertical steel bars (901) and several first horizontal steel bars (902). The lower ends of several first sleeves (11) are connected to the connecting plate (6). The lower ends of several first vertical steel bars (901) are connected to the upper ends of several first sleeves (11). Several first horizontal steel bars (902) are connected to several first vertical steel bars (901).

5. The modular building column connection node structure according to claim 4, characterized in that, The second sleeve (12) is provided in several units. The second steel cage structure (10) includes several second vertical steel bars (1001) and several second horizontal steel bars (1002). The lower ends of several second sleeves (12) are connected to the connecting plate (6). The lower ends of several second vertical steel bars (1001) are connected to the upper ends of several second sleeves (12). Several second horizontal steel bars (1002) are connected to several second vertical steel bars (1001).

6. The modular building column connection node structure according to claim 1, characterized in that, The modular building and column connection node structure also includes several steel beams (13), which are respectively connected to the first steel column (1) and the second steel column (2).

7. A construction method for parallel column connection, applied to the joint structure of parallel column connection in modular buildings according to any one of claims 1 to 6, characterized in that, Including the following steps: S1: Position and install the connecting plate (6) in the modular building; S2: Install the first steel column (1) on the connecting plate (6); S3: The second plug-in part (4) and the first plug-in part (3) are plugged into each other so that the second steel column (2) is installed on the connecting plate (6); S4: Pour concrete or grout into the first pouring cavity (101), the second pouring cavity (201) and the third pouring cavity (5).

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