Fabricated interlayer floor slab structure

Abstract

The utility model discloses an assembly type interlayer floor slab structure, and particularly relates to the technical field of assembly type decoration, the assembly type interlayer floor slab structure comprises brick walls and an interlayer floor slab assembly, the interlayer floor slab assembly is fixedly installed between the two brick walls, and reinforced concrete ring beams are arranged in the brick walls. The interlayer floor slab assembly comprises a floor layer, a cement mortar leveling layer and a sound insulation layer which are fixedly laid from top to bottom, the sound insulation layer comprises two H-shaped steel beams, a plurality of light steel beams, a concrete slab layer, an arch-shaped steel sheet layer and a sound absorption cotton layer, and the arch-shaped steel sheet layer is bent towards the concrete slab layer; the two ends of the two H-shaped steel beams are fixedly connected with reinforced concrete ring beams of the two brick walls respectively, the multiple light steel beams are installed between the two H-shaped steel beams at intervals in the length direction of the H-shaped steel beams, and a concrete slab layer, an arch-shaped steel sheet layer and a sound absorption cotton layer are sequentially laid between every two adjacent light steel beams from top to bottom. The sound insulation floor slab is easy to carry, install and construct, the integrity, the shock resistance and the stability of the floor slab are improved, and the sound insulation effect is good.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated decoration technology, and in particular to a prefabricated mezzanine floor slab structure. Background Technology

[0002] With the accelerating pace of urbanization, the demand for intensive use of building space has spurred the large-scale application of LOFT mezzanine structures. However, many problems still need to be addressed in the practical application of LOFT mezzanine structures.

[0003] In terms of structural performance, LOFT mezzanine structures mostly use lightweight steel keel systems, whose natural frequency range easily resonates with the walking and jumping frequencies of the human body, severely restricting the user experience. Regarding sound insulation, LOFT mezzanine structures often use lightweight rigid materials, and ordinary floor slabs and partitions are insufficient to effectively block sound transmission, leading to noise interference between upper and lower floors and adjacent spaces, making it difficult to create a quiet environment. In terms of safety, current LOFT mezzanine structures lack proper design of the structural system and connection nodes, generally exhibiting insufficient design standards. Furthermore, most rely on on-site welding, resulting in inconsistent steel structure quality. Some projects also use excessively heavy structural systems, leading to poor overall structural stability under external loads, posing safety hazards and affecting durability. Moreover, many current LOFT mezzanine structures lack modular component design and involve large-scale wet concrete work. Some large components and materials still require cranes to lift them from high-rise outdoor balconies into the interior, causing significant difficulties in material handling, construction, and project management, increasing construction costs, extending the construction period, and reducing construction efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated mezzanine floor structure to solve the problems existing in the prior art. It is easy to transport, install and construct, and can improve the integrity, seismic resistance and stability of the floor, and has a good sound insulation effect.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a prefabricated mezzanine floor structure, including brick walls and mezzanine floor components. The mezzanine floor components are fixedly installed between two opposing brick walls. Reinforced concrete ring beams and reinforced concrete structural columns are provided within the brick walls. The mezzanine floor components include a floor layer, a cement mortar leveling layer, and a sound insulation layer, which are fixedly laid from top to bottom. The sound insulation layer includes two H-shaped steel beams, multiple light steel beams, a concrete slab, an arched steel sheet layer, and a sound-absorbing cotton layer. The arched steel sheet layer is bent towards the concrete slab. The two ends of the two H-shaped steel beams are fixedly connected to the reinforced concrete ring beams of the two brick walls, respectively. Multiple light steel beams are installed at intervals between the two H-shaped steel beams along the length of the H-shaped steel beams. The concrete slab, the arched steel sheet layer, and the sound-absorbing cotton layer are laid sequentially from top to bottom between adjacent light steel beams.

[0007] Preferably, the reinforced concrete ring beam is pre-embedded with embedded parts for connection with the H-shaped steel structure.

[0008] Preferably, the embedded part includes four L-shaped steel bars and a C-shaped steel component. The C-shaped steel component includes a steel top plate, a steel bottom plate, and steel side plates. The two ends of the steel side plates are respectively vertically fixed to the steel top plate and the steel bottom plate. The steel bottom plate protrudes from the steel top plate. The four corners of the side plates away from the steel top plate are fixedly connected to the four L-shaped steel bars. The four L-shaped steel bars, the steel top plate, the steel side plates, and part of the steel bottom plate are embedded in the reinforced concrete ring beam. The H-shaped steel beam is inserted and fixed to the C-shaped steel component.

[0009] Preferably, the partition floor assembly further includes a gypsum board layer, which is fixedly laid under the sound insulation layer, and the gypsum board layer includes double-layer gypsum board.

[0010] Preferably, the light steel beam has connecting holes at both ends near the H-shaped steel beam. Fixing screws pass through the H-shaped steel beam and are inserted into the connecting holes to fix the H-shaped steel beam to the light steel beam. The light steel beam has a first mounting groove and a second mounting groove along its own length. The side of the light steel beam connected to the brick wall away from the brick wall has the first mounting groove and the second mounting groove. The light steel beam located in the middle of the sound insulation layer has the first mounting groove and the second mounting groove on both sides. The two ends of the concrete slab layer are installed in two adjacent first mounting grooves, and the two ends of the arched steel sheet layer are installed in two adjacent second mounting grooves.

[0011] Preferably, the concrete slab is composed of multiple concrete slabs spliced ​​together, and the joint between two adjacent concrete slabs is filled with silicone structural adhesive.

[0012] Preferably, the concrete slab is an autoclaved lightweight concrete slab.

[0013] Preferably, the sound-absorbing cotton layer comprises multiple spliced ​​and fixed sound-absorbing cotton pieces, which are snapped and fixed between two adjacent light steel beams, and there is a gap between the top of the sound-absorbing cotton and the arched steel sheet layer, the gap being used for installing pipelines.

[0014] Preferably, each H-beam comprises multiple H-beams, and adjacent H-beams are fixedly connected by connecting members.

[0015] Preferably, the connecting component includes an upper cover plate, a lower cover plate, two side sealing plates, and fixing screws. The upper cover plate includes a top plate and an upper T-shaped block. The crossbeam of the upper T-shaped block is fixedly connected to the bottom surface of the top plate, and the crossbeam of the upper T-shaped block is perpendicular to the length direction of the top plate. The lower cover plate includes a bottom plate and a lower T-shaped block. The crossbeam of the lower T-shaped block is fixedly connected to the top surface of the bottom plate, and the crossbeam of the lower T-shaped block is perpendicular to the length direction of the bottom plate. The two ends of the top plate along the length direction are fixed to the top surface of two adjacent H-beams by the fixing screws. The two ends of the bottom plate along the length direction are fixed to the bottom surface of two adjacent H-beams by the fixing screws. At the same time, the vertical beam of the upper T-shaped block fits against the vertical beam of the lower T-shaped block, so that the upper T-shaped block and the lower T-shaped block are spliced ​​into an I-shape with the same cross-section as the H-beam. The two side sealing plates are respectively fixed to the sides of two adjacent H-beams by the fixing screws.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a prefabricated mezzanine floor structure. The sound insulation layer includes two H-shaped steel beams, multiple light steel beams, a concrete slab, an arched steel sheet layer, and a sound-absorbing cotton layer. The sound insulation layer is assembled using a prefabricated and modular small component method, which facilitates the handling, installation, and construction of the floor slab. The two ends of the two H-shaped steel beams are fixedly connected to the reinforced concrete ring beams of two brick walls, forming an integral whole between the H-shaped steel beams and the reinforced concrete ring beams. This not only transmits vertical loads but also resists horizontal forces and bending moments, preventing relative displacement or rotation at the connection points, and significantly improving the structure's load-bearing capacity, seismic resistance, and space utilization. The curved structure of the arched steel sheet layer can evenly distribute concentrated loads to the concrete layer, reducing local stress concentration, lowering the risk of concrete layer cracking, and improving the floor slab's crack resistance and durability. The sound-absorbing cotton layer can effectively absorb airborne sound and impact sound, consuming sound energy through friction between fibers and air vibration, reducing the penetration of high-frequency noise, and creating a quiet environment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a prefabricated mezzanine floor structure.

[0020] Figure 2 This is a sectional view of a prefabricated mezzanine floor structure.

[0021] Figure 3 This is a sectional view of the mezzanine floor slab assembly;

[0022] Figure 4 This is a structural schematic diagram of the embedded parts;

[0023] Figure 5 This is a schematic diagram showing the connection between an H-beam and a light steel beam;

[0024] Figure 6 This is a structural diagram of an H-beam.

[0025] Figure 7 This is a structural diagram of the connecting components;

[0026] Figure 8 This is a schematic diagram of the arched steel sheet structure;

[0027] Figure 9 This is a schematic diagram of the structure of sound-absorbing cotton;

[0028] Figure 10 An exploded view of the sound insulation layer;

[0029] Figure 11 This is a schematic diagram illustrating the splicing process of light steel beams, concrete slabs, and arched steel sheet layers.

[0030] Figure 12 This is a schematic diagram showing the completed splicing of light steel beams, concrete slabs, and arched steel sheets.

[0031] In the diagram: 1-Brick wall; 2-Reinforced concrete ring beam; 3-Reinforced concrete structural column; 4-Floor slab assembly; 5-Floor layer; 6-Cement mortar leveling layer; 7-H-beam; 8-Light steel beam; 9-Concrete slab; 10-Arched steel sheet; 11-Sound-absorbing cotton; 12-Embedded parts; 13-L-shaped steel bar; 14-C-shaped steel component; 15-Steel sleeve; 16-Double-layer gypsum board; 17-C-shaped pipeline fixing component; 18-Connecting hole; 19-Fixing bolt; 20-Connecting component; 21-Upper cover plate; 22-Lower cover plate; 23-Side sealing plate; 24-Fixing screw; 25-Silicone structural adhesive. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The purpose of this utility model is to provide a prefabricated mezzanine floor structure to solve the problems existing in the prior art. It is easy to transport, install and construct, and can improve the integrity, seismic resistance and stability of the floor, and has a good sound insulation effect.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] This utility model provides a prefabricated mezzanine floor structure, such as Figure 1-3 As shown, the system includes brick walls 1 and a mezzanine floor assembly 4. The mezzanine floor assembly 4 is fixedly installed between two opposing brick walls 1. The brick walls 1 are equipped with reinforced concrete ring beams 2 and reinforced concrete structural columns 3. The mezzanine floor assembly 4 includes a floor layer 5, a cement mortar leveling layer 6, and a sound insulation layer, which are fixedly laid from top to bottom. The sound insulation layer includes two H-shaped steel beams, multiple light steel beams 8, a concrete slab, an arched steel sheet layer, and 11 layers of sound-absorbing cotton. The arched steel sheet layer is bent towards the concrete slab layer. The two ends of the two H-shaped steel beams are fixedly connected to the reinforced concrete ring beams 2 of the two brick walls 1, respectively. Multiple light steel beams 8 are installed at intervals between the two H-shaped steel beams along the length of the H-shaped steel beams. Between two adjacent light steel beams 8, a concrete slab, an arched steel sheet layer, and 11 layers of sound-absorbing cotton are laid from top to bottom. The sound insulation layer comprises two H-shaped steel beams, multiple light steel beams 8, a concrete slab layer, an arched steel sheet layer, and 11 layers of sound-absorbing cotton. The sound insulation layer is assembled using a modular, prefabricated method, facilitating the handling, installation, and construction of the floor slab. The two H-shaped steel beams are fixedly connected at both ends to the reinforced concrete ring beams 2 of the two brick walls 1, forming a unified structure. This not only transmits vertical loads but also resists horizontal forces and bending moments, preventing relative displacement or rotation at the connection points and significantly improving the structure's load-bearing capacity, seismic resistance, and space utilization. The curved structure of the arched steel sheet layer evenly distributes concentrated loads to the concrete layer, reducing local stress concentration, lowering the risk of concrete cracking, and improving the floor slab's crack resistance and durability. The 11 layers of sound-absorbing cotton effectively absorb airborne and impact noise, consuming sound energy through fiber friction and air vibration, reducing the penetration of high-frequency noise, and creating a quiet environment.

[0036] In a further preferred embodiment of this utility model, a pre-embedded part 12 for structural connection with the H-beam 7 is pre-embedded in the reinforced concrete ring beam 2.

[0037] A further preferred embodiment of this utility model is, as follows: Figure 4 As shown, the embedded part 12 includes four L-shaped steel bars 13 and C-shaped steel components 14. The C-shaped steel components 14 include a steel top plate, a steel bottom plate, and steel side plates. The two ends of the steel side plates are vertically fixed to the steel top plate and the steel bottom plate, respectively. The steel bottom plate protrudes from the steel top plate. Steel sleeves 15 are provided at the four corners of the side of the steel side plate away from the steel top plate. One end of the L-shaped steel bars 13 is fixedly connected to the steel sleeves 15. The four L-shaped steel bars 13, the four steel sleeves 15, the steel top plate, the steel side plates, and part of the steel bottom plate are embedded in the reinforced concrete ring beam 2. The H-shaped steel beam is inserted and fixed to the C-shaped steel components 14. The part of the steel bottom plate protruding from the reinforced concrete ring beam 2 can provide a certain bearing force to the H-shaped steel beam.

[0038] In a further preferred embodiment of this utility model, the partition floor assembly 4 also includes a gypsum board layer, which is fixedly laid under the sound insulation layer, and the gypsum board layer is a double-layer gypsum board 16.

[0039] A further preferred embodiment of this utility model is, as follows: Figure 5 As shown, the light steel beam 8 has connecting holes 18 at both ends near the H-shaped steel beam. Fixing screws 19 pass through the H-shaped steel beam and are inserted into the connecting holes 18, thus fixing the H-shaped steel beam to the light steel beam 8. The light steel beam 8 has a first mounting groove and a second mounting groove along its length. The side of the light steel beam 8 connected to the brick wall 1 away from the brick wall 1 has a first mounting groove and a second mounting groove. The light steel beam 8 located in the middle of the sound insulation layer has a first mounting groove and a second mounting groove on both sides. The two ends of the concrete slab layer are installed in two adjacent first mounting grooves, and the two ends of the arched steel sheet layer are installed in two adjacent second mounting grooves. Preferably, as... Figure 8 As shown, the arched steel sheet layer includes multiple arched steel sheets 10 that are sequentially attached and spliced ​​together.

[0040] A further preferred embodiment of this utility model is, as follows: Figure 6 As shown, each H-beam consists of multiple H-beams 7, and two adjacent H-beams 7 are fixedly connected by connecting members 20.

[0041] A further preferred embodiment of this utility model is, as follows: Figure 7As shown, the connecting component 20 includes an upper cover plate 21, a lower cover plate 22, two side sealing plates 23, and fixing screws 24. The upper cover plate 21 includes a top plate and an upper T-shaped block. The crossbeam of the upper T-shaped block is fixedly connected to the bottom surface of the top plate, and the crossbeam of the upper T-shaped block is perpendicular to the length direction of the top plate. The lower cover plate 22 includes a bottom plate and a lower T-shaped block. The crossbeam of the lower T-shaped block is fixedly connected to the top surface of the bottom plate, and the crossbeam of the lower T-shaped block is perpendicular to the length direction of the bottom plate. The two ends of the top plate along the length direction are fixed to the top surface of two adjacent H-beams 7 by fixing screws 24. The two ends of the bottom plate along the length direction are fixed to the bottom surface of two adjacent H-beams 7 by fixing screws 24. At the same time, the vertical beam of the upper T-shaped block fits into the vertical beam of the lower T-shaped block, so that the upper T-shaped block and the lower T-shaped block are spliced ​​into an I-shape with the same cross-section as the H-beam 7. The two side sealing plates 23 are respectively fixed to the sides of two adjacent H-beams 7 by fixing screws 24. The upper cover plate 21 and the lower cover plate 22 can strengthen and fix the upper and lower flange plates of two adjacent H-beams 7, and the two side sealing plates 23 can strengthen and fix the middle web of two adjacent H-beams 7, ensuring the stability of the connection.

[0042] The sound insulation layer structure adopts a dry splicing process, effectively avoiding multiple safety hazards in traditional welding operations through modular assembly. This technical solution not only eliminates the risks of hot work and smoke pollution, but also significantly improves the stability of project quality. Through precise docking of standardized components, it not only eliminates the over-reliance on manual welding techniques, but also fundamentally solves the durability problem of easy corrosion at weld points.

[0043] In a further preferred embodiment of this invention, the concrete slab is composed of multiple concrete slabs 9 spliced ​​together, with the joints between adjacent concrete slabs 9 filled with silicone structural adhesive 25. The concrete slabs 9 are autoclaved lightweight concrete slabs 9. The autoclaved lightweight concrete slabs 9 are lightweight, reducing the overall building load and making them suitable for high-rise and large-span buildings. Furthermore, the internal microporous structure of the autoclaved lightweight concrete slabs 9 can form a sound-absorbing barrier, meeting the high sound insulation requirements of residences and offices.

[0044] A further preferred embodiment of this utility model is, as follows: Figure 9 As shown, the sound-absorbing cotton layer 11 comprises multiple spliced ​​and fixed sound-absorbing cotton 11s. The sound-absorbing cotton 11s are snapped and fixed between two adjacent light steel beams 8, and there is a gap between the top of the sound-absorbing cotton 11 and the arched steel sheet layer. C-shaped pipeline fixing components 17 are installed in the gap for pipeline installation. The cross-section of the sound-absorbing cotton 11 is trapezoidal, and the sides of the trapezoidal sound-absorbing cotton 11 can fit against the light steel beam 8 and the arched steel sheet 10, ensuring the firmness of the sound-absorbing cotton 11.

[0045] The construction process of the prefabricated mezzanine floor structure adopted in this embodiment is as follows: Figure 10-12 As shown, it includes the following steps:

[0046] Step 1: The embedded parts 12, floor layer 5, two H-shaped steel beams of the sound insulation layer, multiple light steel beams 8, concrete slab layer, arched steel sheet layer and sound-absorbing cotton layer 11 are processed in the factory.

[0047] Step 2: During the early construction process, when building the brick wall 1, the positions of the reinforced concrete ring beam 2 and the reinforced concrete structural column 3 are reserved. After the formwork is erected and the steel bars are tied, the concrete is poured and the above-mentioned embedded parts 12 are embedded, so that the embedded parts 12 are fixedly connected to the reinforced concrete ring beam 2.

[0048] Step 3: After the concrete has set, insert the H-beams 7 into the recessed holes of the embedded parts 12 on both sides of the brick wall 1, and fix multiple H-beams 7 together to form an H-beam beam through the connecting components 20.

[0049] Step 4: Move multiple light steel beams 8 into the side recesses of the H-shaped steel beam structure on both sides, and screw the fixing screws 19 through the reserved holes of the H-shaped steel beams into the reserved connection holes 18 of the light steel beams 8 to fix the light steel beams 8 to the H-shaped steel beams. Then, arched steel plates 10 are placed in the two adjacent light steel beams 8.

[0050] Step 5: Install C-shaped pipeline fixing component 17 at the lower part of the arched steel sheet 10, install autoclaved lightweight concrete slab 9 at the upper part of the arched steel sheet 10, and fill the splice joint between adjacent autoclaved lightweight concrete slabs 9 with silicone structural adhesive 25.

[0051] Step 6: Then, fill a certain amount of cement mortar into the floor slab surface formed by the autoclaved lightweight concrete slab 9 and level it to form an ultra-thin cement mortar leveling layer 6. After passing the inspection, install the floor layer 5 on the ultra-thin cement mortar leveling layer 6.

[0052] Step 7: Install the pipeline in the C-shaped pipeline fixing component 17. After installation, insert the trapezoidal sound-absorbing cotton 11. Then, install the double-layer gypsum board 16 at the bottom of the sound insulation layer through the gypsum board fixing component.

[0053] The mezzanine floor slab assembly 4 uses an ultra-thin cement mortar leveling layer, autoclaved lightweight concrete slab 9, and light steel structure, which can reduce the overall structural weight and improve safety and durability.

[0054] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A prefabricated floor structure, characterized in that: The system includes brick walls and a mezzanine floor assembly. The mezzanine floor assembly is fixedly installed between two opposing brick walls. The brick walls contain reinforced concrete ring beams and reinforced concrete structural columns. The mezzanine floor assembly includes a floor layer, a cement mortar leveling layer, and a sound insulation layer, which are fixedly laid from top to bottom. The sound insulation layer includes two H-shaped steel beams, multiple light steel beams, a concrete slab, an arched steel sheet layer, and a sound-absorbing cotton layer. The arched steel sheet layer is bent towards the concrete slab. The two ends of the two H-shaped steel beams are fixedly connected to the reinforced concrete ring beams of the two brick walls, respectively. The multiple light steel beams are installed at intervals between the two H-shaped steel beams along the length of the H-shaped steel beams. Between adjacent light steel beams, the concrete slab, the arched steel sheet layer, and the sound-absorbing cotton layer are laid from top to bottom.

2. The prefabricated floor deck structure according to claim 1, characterized in that: The reinforced concrete ring beam is pre-embedded with embedded parts for connection with the H-shaped steel structure.

3. The prefabricated floor deck structure according to claim 2, characterized in that: The embedded component includes four L-shaped steel bars and a C-shaped steel member. The C-shaped steel member includes a steel top plate, a steel bottom plate, and steel side plates. The two ends of the steel side plates are respectively vertically fixed to the steel top plate and the steel bottom plate. The steel bottom plate protrudes from the steel top plate. The four corners of the side plates away from the steel top plate are fixedly connected to the four L-shaped steel bars. The four L-shaped steel bars, the steel top plate, the steel side plates, and part of the steel bottom plate are embedded in the reinforced concrete ring beam. The H-shaped steel beam is inserted and fixed to the C-shaped steel member.

4. The prefabricated floor deck structure according to claim 1, wherein: The floor slab assembly also includes a gypsum board layer, which is fixedly laid under the sound insulation layer, and the gypsum board layer includes double-layer gypsum board.

5. The prefabricated floor deck structure according to claim 1, wherein: The light steel beam has connecting holes at both ends near the H-shaped steel beam. Fixing screws pass through the H-shaped steel beam and are inserted into the connecting holes to fix the H-shaped steel beam to the light steel beam. The light steel beam has a first mounting groove and a second mounting groove along its own length. The side of the light steel beam connected to the brick wall away from the brick wall has the first mounting groove and the second mounting groove. The light steel beam located in the middle of the sound insulation layer has the first mounting groove and the second mounting groove on both sides. The two ends of the concrete slab layer are installed in two adjacent first mounting grooves, and the two ends of the arched steel sheet layer are installed in two adjacent second mounting grooves.

6. The prefabricated floor deck structure according to claim 1, wherein: The concrete slab is composed of multiple concrete slabs spliced ​​together, and the joints between two adjacent concrete slabs are filled with silicone structural adhesive.

7. The prefabricated floor structure according to claim 6, characterized in that: The concrete slab is an autoclaved lightweight concrete slab.

8. The prefabricated floor deck structure according to claim 1, wherein: The sound-absorbing cotton layer includes multiple spliced ​​and fixed sound-absorbing cotton pieces, which are snapped and fixed between two adjacent light steel beams. There is a gap between the top of the sound-absorbing cotton and the arched steel sheet layer, which is used for installing pipelines.

9. The prefabricated floor deck structure according to claim 1, wherein: Each H-beam comprises multiple H-beams, and adjacent H-beams are fixedly connected by connecting members.

10. The prefabricated floor structure according to claim 9, characterized in that: The connecting components include an upper cover plate, a lower cover plate, two side sealing plates, and fixing screws. The upper cover plate includes a top plate and an upper T-shaped block. The crossbeam of the upper T-shaped block is fixedly connected to the bottom surface of the top plate, and the crossbeam of the upper T-shaped block is perpendicular to the length direction of the top plate. The lower cover plate includes a bottom plate and a lower T-shaped block. The crossbeam of the lower T-shaped block is fixedly connected to the top surface of the bottom plate, and the crossbeam of the lower T-shaped block is perpendicular to the length direction of the bottom plate. The two ends of the top plate along the length direction are fixed to the top surface of two adjacent H-beams by the fixing screws. The two ends of the bottom plate along the length direction are fixed to the bottom surface of two adjacent H-beams by the fixing screws. At the same time, the vertical beam of the upper T-shaped block fits against the vertical beam of the lower T-shaped block, so that the upper T-shaped block and the lower T-shaped block are spliced ​​into an I-shape with the same cross-section as the H-beam. The two side sealing plates are respectively fixed to the sides of two adjacent H-beams by the fixing screws.

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