Modular building spliced beam joint structure and construction method thereof

Abstract

The application relates to the technical field of building construction, and discloses a node structure of modular building parallel girder connection and a construction method thereof, which comprises the following steps: one end of a first steel girder is adapted to be connected with a first steel column, and the other end extends towards a direction away from the first steel column; one end of a second steel girder is adapted to be connected with a second steel column, and the other end extends towards a direction away from the second steel column, so that the second steel girder is arranged in opposite spacing with the first steel girder; a grouting plate is connected with the bottom side of the first steel girder and the bottom side of the second steel girder at the same time, the first steel girder, the second steel girder and the grouting plate enclose a pouring cavity, a pouring opening is formed between the top side of the first steel girder and the top side of the second steel girder, and the pouring opening is arranged in communication with the pouring cavity. The first steel girder and the second steel girder are connected in parallel through pouring of concrete into the pouring cavity, so that independent double girders jointly bear stress, discrete module units are connected into integral units, 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 and construction method of modular building beam connection. 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 application and promotion. Currently, each module in modular construction is a discrete unit, resulting in relatively poor structural integrity, and the splicing of modules presents difficulties in handling joints. The novel parallel beam grouting node can effectively solve all of the above problems. Summary of the Invention

[0003] In view of this, the present invention provides a modular building beam-connected node structure and its construction method, which solves 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 beam-joint node structure, comprising: a first steel beam, one end of which is adapted to connect to a first steel column, and the other end of which extends away from the first steel column; a second steel beam, one end of which is adapted to connect to a second steel column, and the other end of which extends away from the second steel column, such that the second steel beam and the first steel beam are spaced apart; and a grouting plate, which connects the bottom sides of the first steel beam and the second steel beam, wherein the first steel beam, the second steel beam, and the grouting plate enclose a casting cavity, and a casting port is formed between the top sides of the first steel beam and the top sides of the second steel beam, the casting port being connected to the casting cavity.

[0005] Beneficial effects: By pouring concrete into the casting cavity, the first steel beam and the second steel beam are connected side by side, so that the independent double beams can be subjected to joint force, and the discrete modular units can be connected into an integral unit, thereby improving the overall performance of the structure and the load-bearing capacity of the modular building.

[0006] In one optional embodiment, the first steel beam includes a first steel plate, a second steel plate, and a third steel plate. The first steel plate is vertically disposed on the side wall of the first steel column. The first end of the second steel plate is connected to the upper end of the first steel plate, and the second end of the second steel plate extends toward the second steel beam. The first end of the third steel plate is connected to the lower end of the first steel plate, and the second end of the third steel plate extends toward the second steel beam and is connected to the grout-blocking plate.

[0007] In one optional embodiment, the second steel beam includes a fourth steel plate, a fifth steel plate, and a sixth steel plate. The fourth steel plate is vertically disposed on the side wall of the second steel column. The first end of the fifth steel plate is connected to the upper end of the second steel plate, and the second end of the fifth steel plate extends toward the first steel beam. The first end of the sixth steel plate is connected to the lower end of the fifth steel plate, and the second end of the sixth steel plate extends toward the first steel beam and is connected to the grout-blocking plate.

[0008] In one optional embodiment, the grout-blocking plate has insertion slots on both sides, and the third steel plate and the sixth steel plate are respectively inserted into the insertion slots on both sides.

[0009] Beneficial effects: By sealing the bottom surface with grout-blocking plates, the outflow of poured concrete is prevented, thus avoiding impact on construction quality. Furthermore, the grout-blocking plates are equipped with interlocking slots, facilitating the connection between the first and second steel beams and improving construction efficiency.

[0010] In one alternative embodiment, the modular building and beam-connected node structure further includes a reinforcing component disposed within the casting cavity.

[0011] Beneficial effects: By setting up reinforcing components, the connection between the first and second steel beams is made more stable, improving the overall structural performance after beam merging and further enhancing the load-bearing capacity.

[0012] In one alternative embodiment, the reinforcing component includes a plurality of studs disposed within the casting cavity, and the plurality of studs are respectively connected to the first steel beam and the second steel beam.

[0013] Beneficial effects: By setting shear studs, the connection performance between the concrete and the first and second steel beams is improved after the concrete is poured, thereby further improving the load-bearing capacity of the first and second steel beams.

[0014] In one alternative embodiment, the reinforcing component further includes a steel cage structure disposed within the casting cavity.

[0015] Beneficial effects: By setting up a steel cage structure, the tensile strength of the concrete after pouring is improved, and the load-bearing capacity of the beam structure is further enhanced.

[0016] In one optional embodiment, the modular building beam-connected node structure further includes a grouting rod, wherein the first steel column and the second steel column are arranged side by side and spaced apart from each other, and the grouting rod is arranged vertically between the first steel column and the second steel column, and is located at one end of the first steel column and the second steel column near the first steel beam and the second steel beam.

[0017] Beneficial effects: By setting up grout-blocking rods, the poured concrete is prevented from flowing between the first and second steel columns, thus improving the structural integrity of the first and second steel beams after pouring.

[0018] In one optional embodiment, the modular building beam-connected node structure further includes a first floor slab and a second floor slab. The first floor slab is connected to the top side of the first steel beam, and the second floor slab is connected to the top side of the second steel beam. A connection space is formed between the first floor slab and the second floor slab. The connection space is connected to the pouring cavity through the pouring port. The connection space is adapted to accommodate concrete to connect the first floor slab and the second floor slab.

[0019] Secondly, the present invention also provides a construction method for parallel beam connection, applied to the above-mentioned modular parallel beam connection node structure, including the following steps: S1: Install the first steel beam onto the first steel column; S2: Pre-install the grouting plate onto the bottom side of the first steel beam; S3: Install the second steel beam onto the second steel column; S4: Adjust the position of the grouting plate so that the bottom side of the first steel beam and the bottom side of the second steel beam are simultaneously connected to the grouting plate; S5: Pour concrete into the casting cavity so that the first steel beam, the grouting plate and the second steel beam form an integral structure. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the modular building beam-connected node structure according to an embodiment of the present invention;

[0022] Figure 2 This is a front view of the modular building and beam-connected node structure according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the modular building with beam-connected node structure after casting, according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. First steel beam; 101. First steel plate; 102. Second steel plate; 103. Third steel plate; 2. Second steel beam; 201. Fourth steel plate; 202. Fifth steel plate; 203. Sixth steel plate; 3. Grouting plate; 4. Casting cavity; 5. Reinforcing components; 501. Stud; 502. Reinforcing cage structure; 6. Grouting rod; 7. First floor slab; 8. Second floor slab; 9. First steel column; 10. Second steel column; 11. Casting port; 12. Post-cast strip. Detailed Implementation

[0026] 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.

[0027] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0028] According to embodiments of the present invention, in one aspect, such as Figure 1 and Figure 2 As shown, a modular building beam-joint node structure is provided, including: a first steel beam 1, a second steel beam 2, and a grouting plate 3. One end of the first steel beam 1 is adapted to connect with a first steel column 9, and the other end of the first steel beam 1 extends away from the first steel column 9. One end of the second steel beam 2 is adapted to connect with a second steel column 10, and the other end of the second steel beam 2 extends away from the second steel column 10, so that the second steel beam 2 and the first steel beam 1 are spaced apart. The grouting plate 3 connects the bottom side of the first steel beam 1 and the bottom side of the second steel beam 2. The first steel beam 1, the second steel beam 2, and the grouting plate 3 enclose a casting cavity 4. A casting port 11 is formed between the top side of the first steel beam 1 and the top side of the second steel beam 2, and the casting port 11 is connected to the casting cavity 4.

[0029] By pouring concrete into the casting cavity 4, the first steel beam 1 and the second steel beam 2 are connected together, so that the independent double beams can bear the load together, and the discrete modular units are connected into an integral unit, which improves the overall performance of the structure and the load-bearing capacity of the modular building.

[0030] It should be noted that the steel beams and 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, large-section steel columns or thick-walled steel columns are required to meet the load-bearing requirements. The modular units use a large amount of steel, resulting in high costs. However, in this embodiment, by pouring concrete into the casting cavity 4, the first steel beam 1 and the second steel beam 2 are merged into a parallel beam, which effectively improves the load-bearing capacity of the first steel beam 1 and the second steel beam 2.

[0031] It should be noted that after the concrete is filled between the first steel beam 1 and the second steel beam 2, there is no gap in the floor slab between the beams, which can meet the usage requirements of multi-module parallel connection to form a large space building. Furthermore, after the beams are grouted, the load-bearing capacity of the first steel beam 1 and the second steel beam 2 is improved, the floor comfort is improved, and the filling measures for the gaps between the modules are optimized.

[0032] It should be noted that high-rise steel structure buildings have high requirements for fire resistance. Therefore, in this embodiment, concrete is poured into the casting cavity 4. Concrete has good fire resistance, which helps to enhance the fire resistance of the first steel beam 1 and the second steel beam 2, and meets the requirement that the fire resistance of high-rise structures is not less than 3 hours.

[0033] In one embodiment, such as Figures 1 to 3 As shown, the first steel beam 1 includes a first steel plate 101, a second steel plate 102, and a third steel plate 103. The first steel plate 101 is vertically disposed on the side wall of the first steel column 9. The first end of the second steel plate 102 is connected to the upper end of the first steel plate 101, and the second end of the second steel plate 102 extends toward the second steel beam 2. The first end of the third steel plate 103 is connected to the lower end of the first steel plate 101, and the second end of the third steel plate 103 extends toward the second steel beam 2 and is connected to the grouting plate 3.

[0034] In one embodiment, such as Figures 1 to 3 As shown, the second steel beam 2 includes a fourth steel plate 201, a fifth steel plate 202, and a sixth steel plate 203. The fourth steel plate 201 is vertically arranged on the side wall of the second steel column 10. The first end of the fifth steel plate 202 is connected to the upper end of the second steel plate 102, and the second end of the fifth steel plate 202 extends towards the first steel beam 1. The first end of the sixth steel plate 203 is connected to the lower end of the fifth steel plate 202, and the second end of the sixth steel plate 203 extends towards the first steel beam 1 and is connected to the grouting plate 3.

[0035] In one embodiment, such as Figures 1 to 3As shown, the grout-blocking plate 3 has insertion slots on both sides, and the third steel plate 103 and the sixth steel plate 203 are respectively inserted into the insertion slots on both sides. By setting the grout-blocking plate 3 to seal the bottom surface, the outflow of poured concrete is prevented, which would affect the construction quality. By setting the insertion slots on the grout-blocking plate 3, the connection between the first steel beam 1 and the second steel beam 2 is facilitated, thereby improving construction efficiency.

[0036] Specifically, the grout-blocking board 3 can be any component that can block concrete; no limitation is made here.

[0037] In one embodiment, such as Figures 1 to 3 As shown, the modular building beam-connecting node structure also includes a reinforcing component 5, which is installed inside the casting cavity 4. By setting the reinforcing component 5, the connection between the first steel beam 1 and the second steel beam 2 is made more stable, improving the overall structural performance after beam connection and further enhancing the load-bearing capacity.

[0038] In one embodiment, such as Figures 1 to 3 As shown, the reinforcing component 5 includes several studs 501, which are disposed within the casting cavity 4 and connected to the first steel beam 1 and the second steel beam 2 respectively. By using studs 501, the connection performance between the concrete and the first steel beam 1 and the second steel beam 2 after the concrete is poured is improved, further enhancing the load-bearing capacity of the first steel beam 1 and the second steel beam 2.

[0039] In one embodiment, such as Figures 1 to 3 As shown, the reinforcing component 5 also includes a steel cage structure 502, which is disposed within the casting cavity 4. By providing the steel cage structure 502, the tensile strength of the concrete after casting is improved, thereby further enhancing the load-bearing capacity of the beam structure.

[0040] Specifically, in this embodiment, the steel cage structure 502 includes stirrups and transverse steel bars. The stirrups are bent and connected end to end to form a rectangular frame. The transverse steel bars are located at the four vertices of the rectangular frame. Several stirrups are provided, and the stirrups are spaced apart along the extension direction of the first steel beam 1. The stirrups are welded to the transverse steel bars to form the steel cage structure 502.

[0041] In one embodiment, such as Figures 1 to 3As shown, the modular building's beam-joint node structure also includes a grout-blocking rod 6. The first steel column 9 and the second steel column 10 are arranged side-by-side with relative intervals. The grout-blocking rod 6 is vertically positioned between the first steel column 9 and the second steel column 10, and located at the end of the first steel column 9 and the second steel column 10 closest to the first steel beam 1 and the second steel beam 2. By setting the grout-blocking rod 6, the flow of poured concrete between the first steel column 9 and the second steel column 10 is prevented, thus improving the structural integrity of the first steel beam 1 and the second steel beam 2 after pouring.

[0042] Specifically, in this embodiment, the plugging rod 6 is a polyethylene rod. Polyethylene rods have stable chemical properties, excellent electrical insulation properties, low water absorption rate, and low water vapor permeability, thereby sealing the poured concrete and preventing the concrete from flowing out of the pouring cavity 4.

[0043] In one embodiment, such as Figure 3 As shown, the modular building beam-connected node structure also includes a first floor slab 7 and a second floor slab 8. The first floor slab 7 is connected to the top side of the first steel beam 1, and the second floor slab 8 is connected to the top side of the second steel beam 2. A connection space is formed between the first floor slab 7 and the second floor slab 8. The connection space is connected to the pouring cavity 4 through the pouring port 11. The connection space is suitable for accommodating concrete to connect the first floor slab 7 and the second floor slab 8.

[0044] It should be noted that, since traditional modules are all independent units and the floor slabs of each module are discrete slabs, calculations often require the assumption of rigid partitions, which does not conform to our conventional calculation assumptions. However, in this embodiment, the modules can be connected as a whole through the connection nodes of the parallel beams, and concrete can be filled between the floor slabs of the two modules to meet the requirements of the floor rigidity assumption and improve the load-bearing capacity of the steel beams.

[0045] According to an embodiment of the present invention, another aspect provides a construction method for parallel beam connection, applied to the above-mentioned modular parallel beam connection node structure, comprising the following steps: S1: installing the first steel beam 1 onto the first steel column 9; S2: pre-installing the grouting plate 3 onto the bottom side of the first steel beam 1; S3: installing the second steel beam 2 onto the second steel column 10; S4: adjusting the position of the grouting plate 3 so that the bottom side of the first steel beam 1 and the bottom side of the second steel beam 2 are simultaneously connected to the grouting plate 3; S5: pouring concrete into the casting cavity 4 so that the first steel beam 1, the grouting plate 3, and the second steel beam 2 form an integral structure.

[0046] Specifically, in step S1, after the first steel beam 1 is installed, the first floor slab 7 needs to be placed on the first steel beam 1, and the studs 501 need to be placed on the first steel beam 1.

[0047] Specifically, in step S2, the third steel plate 103 of the first steel beam 1 is first inserted into the insertion groove on one side of the grouting plate 3. The depth of the insertion groove is not less than the length of the third steel plate 103 so that the third steel plate 103 is completely inserted into the insertion groove. Then, the reinforcing cage structure 502 is placed on the grouting plate 3 and moved to abut against the first steel beam 1. At this time, an installation gap can be left to facilitate the installation of the second steel beam 2 and the second steel column 10.

[0048] Specifically, in step S3, after the second steel beam 2 is installed, the second floor slab 8 needs to be placed on the second steel beam 2, and the studs 501 need to be placed on the second steel beam 2.

[0049] Specifically, in step S4, the grout-blocking plate 3 is moved so that the sixth steel plate 203 is inserted into the insertion groove on the other side of the grout-blocking plate 3, and the reinforcing cage structure 502 is placed between the first steel beam 1 and the second steel beam 2.

[0050] Specifically, in step S5, the poured concrete will form a post-pouring strip 12 in the connecting space. The upper surface of the post-pouring strip 12 is flush with the first floor slab 7 and the second floor slab 8 to improve floor comfort and further enhance load-bearing capacity.

[0051] When using the modular beam-connected node structure of this embodiment, firstly, the overall structure consisting of the first steel column 9, the first steel beam 1, and the first floor slab 7 is positioned and installed; then, the grouting plate 3 is inserted into the first steel beam 1 and the reinforcing cage structure 502 is placed, while reserving installation gaps for the second steel column 10, the second steel beam 2, and the second floor slab 8; then, the second steel beam 2, the second steel column 10, and the second floor slab 8 are installed on the other side corresponding to the grouting plate 3, and the grouting rod 6 is installed between the first steel column 9 and the second steel column 10; after that, the position of the grouting plate 3 and the reinforcing cage structure 502 is adjusted to facilitate subsequent concrete pouring; finally, concrete is poured into the pouring cavity 4 from the pouring port 11 until the connection space between the first floor slab 7 and the second floor slab 8 is filled with concrete, and the concrete is flush with the upper surfaces of the first floor slab 7 and the second floor slab 8, indicating that the pouring is complete.

[0052] 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 beam-joint node structure, characterized in that, include: A first steel beam (1), one end of which is adapted to be connected to a first steel column (9), and the other end of which extends toward a direction away from the first steel column (9); The second steel beam (2) has one end adapted to be connected to the second steel column (10), and the other end of the second steel beam (2) extends away from the second steel column (10) so that the second steel beam (2) and the first steel beam (1) are arranged at a distance from each other. The grouting plate (3) connects the bottom side of the first steel beam (1) and the bottom side of the second steel beam (2). The first steel beam (1), the second steel beam (2) and the grouting plate (3) enclose a casting cavity (4). A casting port (11) is formed between the top side of the first steel beam (1) and the top side of the second steel beam (2). The casting port (11) is connected to the casting cavity (4). The first steel beam (1) includes a first steel plate (101), a second steel plate (102) and a third steel plate (103). The first steel plate (101) is vertically arranged on the side wall of the first steel column (9). The first end of the second steel plate (102) is connected to the upper end of the first steel plate (101). The second end of the second steel plate (102) extends towards the second steel beam (2). The first end of the third steel plate (103) is connected to the lower end of the first steel plate (101). The second end of the third steel plate (103) extends towards the second steel beam (2) and is connected to the grouting plate (3). The second steel beam (2) includes a fourth steel plate (201), a fifth steel plate (202) and a sixth steel plate (203). The fourth steel plate (201) is vertically arranged on the side wall of the second steel column (10). The first end of the fifth steel plate (202) is connected to the upper end of the second steel plate (102). The second end of the fifth steel plate (202) extends towards the first steel beam (1). The first end of the sixth steel plate (203) is connected to the lower end of the fifth steel plate (202). The second end of the sixth steel plate (203) extends towards the first steel beam (1) and is connected to the grouting plate (3). The grouting plate (3) has insertion slots on both sides, and the third steel plate (103) and the sixth steel plate (203) are respectively inserted into the insertion slots on both sides. The modular building beam-connected node structure also includes a reinforcing component (5), which is disposed within the casting cavity (4); The reinforcing component (5) includes studs (501), and a plurality of studs (501) are provided. The plurality of studs (501) are provided in the casting cavity (4), and the plurality of studs (501) are respectively connected to the first steel beam (1) and the second steel beam (2). The modular building beam-connected node structure also includes a first floor slab (7) and a second floor slab (8). The first floor slab (7) is connected to the top side of the first steel beam (1), and the second floor slab (8) is connected to the top side of the second steel beam (2). A connection space is formed between the first floor slab (7) and the second floor slab (8). The connection space is connected to the pouring cavity (4) through the pouring port (11). The connection space is suitable for accommodating concrete to connect the first floor slab (7) and the second floor slab (8).

2. The modular building beam-connected node structure according to claim 1, characterized in that, The reinforcing component (5) also includes a steel cage structure (502), which is disposed inside the casting cavity (4).

3. The modular building beam-connected node structure according to claim 2, characterized in that, The modular building and beam connection node structure also includes a grouting rod (6). The first steel column (9) and the second steel column (10) are arranged side by side and spaced apart. The grouting rod (6) is arranged vertically between the first steel column (9) and the second steel column (10) and is located at one end of the first steel column (9) and the second steel column (10) near the first steel beam (1) and the second steel beam (2).

4. A construction method for parallel beam connection, applied to the modular parallel beam connection node structure according to any one of claims 1 to 3, characterized in that, Including the following steps: S1: Install the first steel beam (1) onto the first steel column (9); S2: Pre-install the grouting plate (3) onto the bottom side of the first steel beam (1); S3: Install the second steel beam (2) onto the second steel column (10); S4: Adjust the position of the grouting plate (3) so that the bottom side of the first steel beam (1) and the bottom side of the second steel beam (2) are connected to the grouting plate (3) at the same time; S5: Pour concrete into the casting cavity (4) so ​​that the first steel beam (1), the grouting plate (3), and the second steel beam (2) form an integral structure.

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