Fabricated concrete hollow composite floor slab and manufacturing method thereof

Abstract

The invention relates to the technical field of floor slabs, and discloses a fabricated concrete hollow composite floor slab and a manufacturing method thereof.The fabricated concrete hollow composite floor slab comprises a first floor slab body and a second floor slab body, the second floor slab body is located below the first floor slab body, and fixing bottom plates are fixed to the two sides and the center of the bottom of the first floor slab body; fixed top plates are fixed to the two sides and the center of the top of the second floor body. A middle reinforcing seat is fixed to the bottom center of the fixing bottom plate, a middle supporting seat is fixed to the top center of the fixing top plate, a groove is formed in the bottom center of the middle reinforcing seat, and a plurality of through holes are formed in the two sides, corresponding to the top of the groove, in the middle reinforcing seat. According to the invention, a mechanical connection mode and a clamping connection mode are used for replacing traditional steel bar welding or post-pouring concrete, so that the field operation procedures are reduced, vibration and temperature deformation can be effectively resisted by multidirectional constraint, the connection strength and stability are remarkably improved, and the connection is stable and reliable in an environment with large vibration or temperature change. And the phenomenon of looseness or failure can be effectively prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of floor, in particular to a fabricated concrete hollow composite floor and a manufacturing method thereof. BACKGROUND

[0002] In the modern construction industry, with the rapid development of high-rise buildings, large public buildings and residential areas, higher requirements are put forward for the safety, economy, construction efficiency and environmental performance of building structures. As an important part of building structures, the design and manufacturing level of concrete floors directly affect the overall performance of buildings.

[0003] The existing connection and fixing mode of floor depends on steel welding or concrete pouring, which not only has complex construction, but also is difficult to guarantee the connection strength and stability. Especially in the environment with large vibration or temperature change, it is easy to produce looseness or failure. At the same time, the existing solid concrete floor is heavy, which not only increases the load of building structure, but also improves the transportation and installation difficulty, and the anti-seismic performance in natural disasters such as earthquake is poor. In addition, the heat and sound insulation performance is weak, the conventional hollow floor is only filled with single material, which is difficult to balance the lightweight and thermal performance, and cannot meet the comfort requirements of modern buildings. SUMMARY

[0004] In order to make up for the above shortcomings, the present application provides a fabricated concrete hollow composite floor and a manufacturing method thereof, which solves the problems of insufficient connection strength, poor anti-seismic performance and weak heat and sound insulation performance in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an assembled concrete hollow composite floor slab, comprising a floor slab body one and a floor slab body two, the floor slab body two is located below the floor slab body one, fixed bottom plates are fixed on both sides and the center of the bottom of the floor slab body one, and fixed top plates are fixed on both sides and the center of the top of the floor slab body two; a reinforced middle seat is fixed on the bottom center of the fixed bottom plate, and a supporting middle seat is fixed on the top center of the fixed top plate, a groove is provided at the bottom center of the reinforced middle seat, and a plurality of through holes are provided in the interior thereof on both sides corresponding to the top of the groove, and a plurality of threaded rods one are fixed on both sides of the top of the supporting middle seat, and the top of the threaded rod one passes through the outside of the through hole; reinforced side seats are fixed on both sides of the bottom of the fixed bottom plate, and the fixed The top of the top plate is provided with a supporting side seat, and the top center of the supporting side seat is provided with a slot, and screw slots are provided on both sides of the top of the reinforcing side seat. A clamping plate is fixed to the bottom center of the reinforcing side seat, and the clamping plate is inserted into the clamping slot and clamped. Threaded rod two is fixed on both sides of the bottom of the reinforcing side seat, and the threaded rod two is inserted into the screw groove and clamped. Several hollow holes are provided in the floor body one and the floor body two, and a reinforcement pipe is fixed on the inner wall of the hollow hole, and an inner reinforcement support plate is provided inside the reinforcement pipe, and a connecting plate is fixed on the outer side of the inner reinforcement support plate, and the connecting plate is fixedly connected to the inner wall of the reinforcement pipe, and an environmentally friendly material filling body is filled between the reinforcement pipe, the inner reinforcement support plate and the connecting plate, and the bottom and side end surfaces of the floor body one and the floor body two are fixed with a heat insulation layer.

[0006] As a further description of the above technical solution: a fixing nut 1 is provided on the top of the threaded rod 1, and the fixing nut 1 is threadedly connected to the threaded rod 1 and fits tightly with the surface of the top of the reinforced middle seat.

[0007] As a further description of the above technical solution: a positioning groove 1 is opened at the center of the top of the corresponding groove inside the reinforced middle seat, and a positioning plate 1 is fixedly connected to the center of the top of the supporting middle seat, and the top of the positioning plate 1 passes through the interior of the positioning groove 1 and is clamped with the positioning groove 1.

[0008] As a further description of the above technical solution: a fixing nut 2 is sleeved on the top position of the surface of the second threaded rod, the second fixing nut is threadedly connected to the second threaded rod, and its bottom end is in press contact with the top of the supporting side seat.

[0009] As a further description of the above technical solution: the bottom of the card slot is fixedly connected to a support plate, the center of the bottom of the card plate is provided with a second positioning groove, the center of the top of the support plate is fixedly connected to a second positioning plate, and the second positioning plate is inserted into the interior of the second positioning groove and is engaged with the second positioning groove.

[0010] As a further description of the above technical solution: a fixing groove is opened at the center position of both sides of the card plate, a push plate is provided at the top position of both sides of the supporting side seat, and the opposite sides of the two push plates are fixedly connected with a fixing plate, and the side of the fixing plate away from the push plate passes through the supporting side seat and the card plate in sequence and extends to the inside of the fixing groove and is clamped in the fixing groove.

[0011] As a further description of the above technical solution: the hollow holes are distributed in a matrix with equal spacing in the first floor slab body and the second floor slab body, and the axes of adjacent hollow holes are parallel.

[0012] As a further description of the above technical solution: the environmentally friendly material filling body is centrifugal glass wool with a filling density of 300~600kg / m³.

[0013] A method for manufacturing an assembled concrete hollow composite floor slab comprises the following steps:

[0014] Step S1: Prefabricate the first and second floor slab bodies according to the design drawings and reserve a number of hollow holes to ensure that the sizes of the two are precisely matched. At the bottom of the first floor slab body, near both sides and the center, a fixed bottom plate is fixedly connected. At the corresponding position on the top of the second floor slab body, a fixed top plate is fixedly connected.

[0015] Step S2: Install a reinforced middle seat at the bottom center of the fixed bottom plate and ensure that it is stable. Open a groove at the bottom center of the reinforced middle seat and open through holes on both sides of its top. Install a supporting middle seat at the top center of the fixed top plate and securely connect threaded rod 1 to both sides of its top. Pass threaded rod 1 through the through holes. Install reinforced side seats on both sides of the bottom of the fixed bottom plate and support side seats on both sides of the top of the fixed top plate. Open slots and screw slots for subsequent connection.

[0016] Step S3: Insert the clamping plate at the bottom of the reinforced side seat into the clamping groove of the supporting side seat to achieve preliminary clamping. In the fixing grooves opened on both sides of the clamping plate, push the fixing plate into the fixing groove through the combination of the push plate and the fixing plate to achieve further fixation. Pass the threaded rod 2 through the screw groove and install the fixing nut 2 on the top of the threaded rod. Tighten the fixing nut 2 to ensure a firm connection between the reinforced side seat and the supporting side seat. Install the fixing nut 1 on the top of the threaded rod 1 and tighten it to tightly connect the supporting middle seat with the reinforced middle seat.

[0017] Step S4: Install reinforcement pipes on the inner walls of the hollow holes reserved inside the floor slab body 1 and the floor slab body 2, set internal reinforcement support plates inside the reinforcement pipes, and fix them to the inner walls of the reinforcement pipes through connecting plates to form a stable support structure. Fill the space between the reinforcement pipes, the internal reinforcement support plates and the connecting plates with environmentally friendly material filling bodies. Subsequently, install insulation layers on the bottom and side surfaces of the floor slab body 1 and the floor slab body 2 to complete the production.

[0018] The present invention has the following beneficial effects:

[0019] 1、The reinforced middle seat of the bottom of the floor body one is precisely connected with the supporting middle seat of the top of the floor body two through the positioning groove one and the positioning plate one, so that the centers of the upper and lower floors are aligned, and stress concentration caused by installation deviation is avoided; the threaded rod one of the supporting middle seat penetrates the through hole of the reinforced middle seat, is axially pressed in cooperation with the fixed nut one, a central shear joint is formed, the clamping plate of the reinforced side seat is inserted into the clamping groove of the supporting side seat, the bottom is positioned twice through the positioning groove two and the positioning plate two, and transverse alignment is ensured; the fixed slots on the two sides of the clamping plate are clamped with the fixed plate of the supporting side seat, transverse constraint is formed, and horizontal shear force is resisted; meanwhile, the threaded rod two penetrates the screw rod groove and is axially fastened through the fixed nut two, so that the vertical bearing capacity of the side joint is improved; the traditional steel bar welding or post-poured concrete is replaced by the connecting mode, on-site operation procedures are reduced, multidirectional constraint can effectively resist vibration and temperature deformation, the strength and stability of the connection are significantly improved, and the occurrence of loosening or failure can be effectively prevented in an environment with large vibration or temperature change.

[0020] 2、In the application, equal-interval matrix hollow holes are formed in the floor body one and the floor body two, the amount of concrete is reduced, and the self weight is significantly reduced; the reinforcing pipe of the inner wall of the hollow hole is in close contact with the inner reinforcing support plate through the connecting plate, a pipe-rib rigid skeleton is formed, stress is dispersed, and the bending bearing capacity of the floor is improved; the overall weight of the floor is effectively reduced, the load of the building structure is reduced, good bearing performance is maintained, the convenience of transportation and installation is improved, and the anti-seismic performance of the floor is also enhanced, so that the floor has better performance in natural disasters such as earthquakes.

[0021] 3、In the application, centrifugal glass wool is filled in the hollow hole, and a heat insulation layer is installed at the bottom and the side end surface of the floor, the centrifugal glass wool can effectively isolate the transmission of noise and heat, and the heat insulation layer further enhances the heat preservation effect of the floor, significantly improves the sound insulation, heat insulation and heat preservation performance of the floor, and provides a more comfortable living environment for the residents. DRAWINGS

[0022] Figure 1 It is a structural section schematic view of the fabricated concrete hollow composite floor in the application;

[0023] Figure 2 It is a partial enlarged schematic view of A in the application; Figure 1

[0024] Figure 3 It is a partial enlarged schematic view of B in the application; Figure 1

[0025] Figure 4 It is a partial enlarged schematic view of C in the application; Figure 1

[0026] ​​​ Figure 5 This is a three-dimensional structural diagram of the reinforced center seat of the assembled concrete hollow composite floor slab of the present invention;

[0027] Figure 6 It is a three-dimensional structural diagram of the inner reinforcement support plate of the assembled concrete hollow composite floor slab in the present invention.

[0028] Legend:

[0029] 1. Floor slab body one; 2. Floor slab body two; 3. Fixed bottom plate; 4. Fixed top plate; 5. Supporting middle seat; 6. Reinforced middle seat; 7. Groove; 8. Positioning groove one; 9. Positioning plate one; 10. Through hole; 11. Threaded rod one; 12. Fixing nut one; 13. Reinforced side seat; 14. Supporting side seat; 15. Clamping groove; 16. Screw groove; 17. Clamping plate; 18. Positioning groove two; 19. Abutment plate; 20. Positioning plate two; 21. Threaded rod two; 22. Fixing nut two; 23. Fixing groove; 24. Push plate; 25. Fixing plate; 26. Hollow hole; 27. Reinforcement pipe; 28. Inner reinforcement support plate; 29. ​​Connecting plate; 30. Environmentally friendly material filling body; 31. Insulation layer. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1-6, the present invention provides an embodiment: an assembled concrete hollow composite floor slab, including a floor slab body 1 and a floor slab body 2, the floor slab body 2 is located below the floor slab body 1, and fixed bottom plates 3 are fixed to both sides and the center of the bottom of the floor slab body 1, and fixed top plates 4 are fixed to both sides and the center of the top of the floor slab body 2; a reinforcing middle seat 6 is fixed to the bottom center of the fixed bottom plate 3, and a supporting middle seat 5 is fixed to the top center of the fixed top plate 4. A groove 7 is provided at the bottom center of the reinforcing middle seat 6, and a plurality of through holes 10 are provided on both sides of the top of the reinforcing middle seat 6 corresponding to the groove 7. A plurality of threaded rods 11 are fixed to both sides of the top of the supporting middle seat 5, and the tops of the threaded rods 11 extend to the outside of the through holes 10; reinforcing side seats 13 are fixed to both sides of the bottom of the fixed bottom plate 3, and supporting side seats 14 are fixed to both sides of the top of the fixed top plate 4 , a card slot 15 is provided at the top center of the supporting side seat 14, and screw slots 16 are provided on both sides of its top. A card plate 17 is fixed to the bottom center of the reinforced side seat 13, and the card plate 17 passes through the card slot 15 and is clamped. Threaded rods 21 are fixed on both sides of the bottom of the reinforced side seat 13, and the threaded rods 21 pass through the screw slots 16 and are clamped. A number of hollow holes 26 are provided in the floor body 1 and the floor body 2 2. A reinforcing pipe 27 is fixed to the inner wall of the hollow hole 26, and an inner reinforcing support plate 28 is provided inside the reinforcing pipe 27. A connecting plate 29 is fixed to the outer side of the inner reinforcing support plate 28, and the connecting plate 29 is fixedly connected to the inner wall of the reinforcing pipe 27. An environmentally friendly material filling body 30 is filled between the reinforcing pipe 27, the inner reinforcing support plate 28 and the connecting plate 29, and an insulating layer 31 is fixed to the bottom and side end surfaces of the floor body 1 and the floor body 2;

[0032] Multiple mechanical connections, including central threaded rod connections, side clamping, and screw fastening, replace traditional steel bar welding or post-cast concrete connections, reducing on-site work steps. The multi-directional constraints created by these multiple mechanical connections effectively resist vibration and temperature deformation, significantly improving the strength and stability of the connection and preventing loosening or failure in environments subject to significant vibration or temperature fluctuations. A matrix of equally spaced hollow holes 26 is provided within the first and second floor slab bodies 1 and 2, reducing concrete usage and significantly lowering deadweight. Reinforcement tubes 27 on the inner walls of the hollow holes 26 are in close contact with the internal reinforcement support plates 28 via connecting plates 29, forming a rigid tube-rib skeleton that disperses stress and enhances the slab's bending bearing capacity. This effectively reduces the overall weight of the slab and reduces the load on the building structure, while maintaining good load-bearing performance, improving transportation and installation convenience, and enhancing the slab's seismic resistance, making it more resilient to natural disasters such as earthquakes. The combination of the environmentally friendly material filler 30 and the thermal insulation layer 31 integrates sound insulation, heat insulation, and thermal insulation, meeting the requirements of green buildings.

[0033] Specifically, the top of the threaded rod 11 is provided with a fixed nut 12, which is threadedly connected with the threaded rod 11 and closely adheres to the surface of the top of the reinforced middle seat 6; ensuring the close adhesion of the supporting middle seat 5 and the reinforced middle seat 6, avoiding the gap loosening caused by long-term use or vibration, and improving the shear bearing capacity and structural stability of the central connection node.

[0034] Specifically, the inside of the reinforced middle seat 6 is provided with a positioning groove 8 at the top of the center of the groove 7, and the top of the supporting middle seat 5 is fixedly connected with a positioning plate 9, which penetrates into the inside of the positioning groove 8 and is clamped with the positioning groove 8; through the precise cooperation of the positioning plate 9 and the positioning groove 8, the alignment accuracy of the upper and lower floor bodies at the central connection position is ensured, the installation deviation is reduced, the stress concentration caused by the central deviation is avoided, and the stress uniformity of the overall structure is improved.

[0035] The top of the surface of the threaded rod 21 is provided with a fixed nut 22, which is threadedly connected with the threaded rod 21, and the bottom end thereof is in close contact with the top of the supporting side seat 14; the vertical constraint of the side connection node is strengthened, the longitudinal pressure of the reinforced side seat 13 and the supporting side seat 14 is enhanced, the anti-pulling performance of the side connection is improved, the relative displacement of the upper and lower floor bodies at the side is prevented, and the stability of the overall structure is further ensured.

[0036] Specifically, the bottom of the clamping groove 15 is fixedly connected with a stop plate 19, the center of the bottom of the clamping plate 17 is provided with a positioning groove 18, the center of the top of the stop plate 19 is fixedly connected with a positioning plate 20, and the positioning plate 20 is inserted into the inside of the positioning groove 18 and clamped with the positioning groove 18; the stop plate 19 provides bottom support for the clamping plate 17 and disperses the clamping force; the cooperation of the positioning plate 20 and the positioning groove 18 ensures the precise alignment of the clamping plate 17 in the clamping groove 15, avoids the horizontal deviation of the side connection, and improves the side shear capacity.

[0037] Specifically, the center of both sides of the clamping plate 17 is provided with a fixed groove 23, the top of both sides of the supporting side seat 14 is provided with a push plate 24, and the opposite side of the two push plates 24 is fixedly connected with a fixed plate 25, and the side of the fixed plate 25 away from the push plate 24 penetrates the supporting side seat 14 and the clamping plate 17 in sequence and extends into the inside of the fixed groove 23 and is clamped with the fixed groove 23; forming a double side fixation of longitudinal clamping and transverse fixed plate constraint, effectively resisting the horizontal shear force, preventing the clamping plate 17 from being pulled out of the clamping groove 15, and improving the anti-deformation capacity of the side connection.

[0038] Specifically, the hollow holes 26 are distributed in a matrix with equal spacing in the floor body 1 and the floor body 2 2, and the axes of adjacent hollow holes 26 are parallel; ensuring that the hollow holes 26 are evenly distributed in the floor, avoiding insufficient local stiffness caused by dense or sparse holes, ensuring uniform distribution of the floor's own weight, and improving the overall bearing performance and crack resistance.

[0039] Specifically, the environmentally friendly material filling body 30 is centrifugal glass wool with a filling density of 500kg / m³. Centrifugal glass wool has the characteristics of lightness, sound insulation and heat insulation, and when the density is controlled at 300~600kg / m³, it can balance weight reduction and functional effects, avoiding being too light to cause insufficient strength or being too heavy to affect the weight reduction goal.

[0040] In order to further better explain the above embodiment, the present invention also provides a method for manufacturing an assembled hollow concrete composite floor slab. When manufacturing the assembled hollow concrete composite floor slab, the specific steps are as follows:

[0041] Step S1: According to the design drawings, concrete prefabricated floor slab body 1 and floor slab body 2 with a strength grade of not less than C30 are used. During prefabrication, a standardized steel mold is used to control the dimensional deviation to ≤2mm, and a plurality of hollow holes 26 are reserved. A fixed bottom plate 3 is fixedly connected to the bottom of the floor slab body 1 on both sides and at the center. A fixed top plate 4 is fixedly connected to the corresponding position on the top of the floor slab body 2 using the same standard process, and the flatness of the fixed top plate 4 is calibrated using a spirit level.

[0042] Step S2: Fix the reinforced middle seat 6 at the bottom center of the fixed base plate 3 with M12 high-strength bolts, open a groove 7 at the bottom center of the reinforced middle seat 6, and machine through holes 10 on both sides of the top; install the support middle seat 5 at the top center of the fixed top plate 4, and fix the threaded rods 11 on both sides of the top. When pre-installed, the length of the threaded rods 11 passing through the through holes 10 is ≥50mm; install reinforced side seats 13 symmetrically on both sides of the bottom of the fixed base plate 3 and fix them with bolts, and install support side seats 14 at corresponding positions on both sides of the top of the fixed top plate 4; open a slot 15 at the top center of the support side seat 14 and open screw slots 16 on both sides of the top by CNC machining;

[0043] Step S3: Hoist the floor slab body 1 to above the floor slab body 2, so that the clamping plate 17 at the bottom of the reinforced side seat 13 is vertically inserted into the clamping groove 15 of the supporting side seat 14, and the insertion depth is ≥ 90% of the depth of the clamping groove 15, while ensuring that the positioning plate 19 at the top of the supporting middle seat 5 is accurately embedded in the positioning groove 8 of the reinforcing middle seat 6; push the push plates 24 on both sides of the supporting side seat 14 so that the fixing plate 25 horizontally penetrates the supporting side seat 14 and the clamping plate 17, and the insertion depth of the fixing groove 23 is ≥ 20mm, and use a feeler gauge to check the gap between the fixing plate 25 and the fixing groove 23 is ≤ 0.2mm to ensure that the lateral constraint is effective; align the threaded rod 21 at the bottom of the reinforcing side seat 13 and penetrate the screw groove 16, and sleeve the fixing nut 22 on its top, and use a torque wrench to tighten it in a symmetrical order to ensure that the top of the supporting side seat 14 is tightly fitted with the fixing nut 22; synchronously tighten the fixing nut 12 on the top of the threaded rod 11 to make the supporting middle seat 5 completely fit with the reinforcing middle seat 6;

[0044] Step S4: During the prefabrication stage of the floor slab body 1 and the floor slab body 2, a number of hollow holes 26 are reserved through a core-pulling and hole-forming process, which are distributed in a matrix with equal spacing; a special construction adhesive is used to fix the reinforcement tube 27 on the inner wall of the hollow hole 26; an inner reinforcement support plate 28 (welded to the connecting plate 29) is installed inside the reinforcement tube 27, and the connecting plate 29 is in close contact with the inner wall of the reinforcement tube 27 to form a rigid skeleton of the tube-rib; centrifugal glass wool is filled between the reinforcement tube 27, the inner reinforcement support plate 28 and the connecting plate 29 using pressure perfusion equipment, and the filling is allowed to stand for 24 hours after perfusion to ensure density; a heat insulation layer 31 is pasted on the bottom and side end surfaces of the floor slab body 1 and the floor slab body 2 by a combination of point bonding and strip bonding, and pressed for 2 hours after pasting to ensure a firm fit, and the production is completed.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An assembled concrete hollow composite floor slab, comprising a floor slab body 1 (1) and a floor slab body 2 (2), characterized in that: The second floor plate body (2) is located below the first floor plate body (1), and the bottom sides and center of the first floor plate body (1) are fixed with fixed bottom plates (3), and the top sides and center of the second floor plate body (2) are fixed with fixed top plates (4); the bottom center of the fixed bottom plate (3) is fixed with a reinforcing middle seat (6), and the top center of the fixed top plate (4) is fixed with a supporting middle seat (5), the bottom center of the reinforcing middle seat (6) is provided with a groove (7), and the inside thereof is provided with a plurality of through holes (10) on both sides corresponding to the top of the groove (7), and the top sides of the supporting middle seat (5) are fixed with a plurality of threaded rods (11), and the tops of the threaded rods (11) extend to the outside of the through holes (10); the bottom sides of the fixed bottom plate (3) are fixed with reinforcing side seats (13), and the top sides of the fixed top plate (4) are fixed with supporting side seats (14), and the top center of the supporting side seat (14) is provided with a slot (15), and the top sides of the A screw groove (16) is provided, a clamping plate (17) is fixed to the bottom center of the reinforced side seat (13), the clamping plate (17) is inserted into the clamping groove (15) and clamped, threaded rods (21) are fixed to both sides of the bottom of the reinforced side seat (13), the threaded rods (21) are inserted into the screw groove (16) and clamped, a plurality of hollow holes (26) are provided in the floor slab body (1) and the floor slab body (2), and the inner wall of the hollow hole (26) is fixed with a reinforcement pipe (21). 7), an inner reinforcing support plate (28) is provided inside the reinforcing tube (27), a connecting plate (29) is fixed on the outer side of the inner reinforcing support plate (28), the connecting plate (29) is fixedly connected to the inner wall of the reinforcing tube (27), an environmentally friendly material filling body (30) is filled between the reinforcing tube (27), the inner reinforcing support plate (28) and the connecting plate (29), and a heat insulation layer (31) is fixed to the bottom and side end surfaces of the floor slab body 1 (1) and the floor slab body 2 (2).

2. The assembled hollow concrete composite floor slab according to claim 1, characterized in that: A fixing nut (12) is provided at the top of the threaded rod (11), and the fixing nut (12) is threadedly connected to the threaded rod (11) and is tightly fitted with the surface of the top of the reinforced middle seat (6).

3. The assembled hollow concrete composite floor slab according to claim 1, characterized in that: A positioning groove (8) is provided at the center of the top of the corresponding groove (7) inside the reinforcing middle seat (6), and a positioning plate (9) is fixedly connected to the center of the top of the supporting middle seat (5). The top of the positioning plate (9) passes through the interior of the positioning groove (8) and is clamped with the positioning groove (8).

4. The assembled concrete hollow composite floor slab according to claim 1, characterized in that: A fixing nut 2 (22) is sleeved on the top of the surface of the second threaded rod (21). The second fixing nut (22) is threadedly connected to the second threaded rod (21), and its bottom end is in tight contact with the top of the supporting side seat (14).

5. The assembled concrete hollow composite floor slab according to claim 1, characterized in that: The bottom of the card slot (15) is fixedly connected to a support plate (19), the center of the bottom of the card plate (17) is provided with a second positioning groove (18), the center of the top of the support plate (19) is fixedly connected to a second positioning plate (20), and the second positioning plate (20) is inserted into the interior of the second positioning groove (18) and is engaged with the second positioning groove (18).

6. The assembled concrete hollow composite floor slab according to claim 1, characterized in that: A fixing groove (23) is provided at the center of both sides of the clamping plate (17), and a push plate (24) is provided at the top of both sides of the supporting side seat (14). The two push plates (24) are fixedly connected to the opposite sides thereof with a fixing plate (25), and the side of the fixing plate (25) away from the push plate (24) sequentially penetrates the supporting side seat (14) and the clamping plate (17) and extends to the inside of the fixing groove (23) to be clamped with the fixing groove (23).

7. The assembled concrete hollow composite floor slab according to claim 1, characterized in that: The hollow holes (26) are distributed in a matrix with equal spacing in the first floor slab body (1) and the second floor slab body (2), and the axes of adjacent hollow holes (26) are parallel.

8. The assembled concrete hollow composite floor slab according to claim 1, characterized in that: The environmentally friendly material filling body (30) is centrifugal glass wool with a filling density of 300-600 kg / m 3 .

9. A method for manufacturing an assembled hollow concrete composite floor slab, comprising the assembled hollow concrete composite floor slab according to any one of claims 1 to 8, characterized in that: The steps include: Step S1: Prefabricate the first floor slab body (1) and the second floor slab body (2) according to the design drawings and reserve a number of hollow holes (26) to ensure that the sizes of the two are precisely matched. At the bottom of the first floor slab body (1), near both sides and the center, a fixed bottom plate (3) is fixedly connected. At the corresponding position on the top of the second floor slab body (2), a fixed top plate (4) is fixedly connected. Step S2: Install the reinforcing middle seat (6) at the bottom center of the fixed bottom plate (3) and ensure that it is stable, open a groove (7) at the bottom center of the reinforcing middle seat (6), and open through holes (10) on both sides of its top, install the supporting middle seat (5) at the top center of the fixed top plate (4), and fix the threaded rod (11) on both sides of its top, so that the threaded rod (11) passes through the through holes (10), install the reinforcing side seats (13) on both sides of the bottom of the fixed bottom plate (3), install the supporting side seats (14) on both sides of the top of the fixed top plate (4), and open a card slot (15) and a screw slot (16) for subsequent connection; Step S3: insert the clamping plate (17) at the bottom of the reinforcing side seat (13) into the clamping groove (15) of the supporting side seat (14) to achieve preliminary clamping, and push the fixing plate (25) into the fixing groove (23) opened on both sides of the clamping plate (17) through the combination of the push plate (24) and the fixing plate (25) to achieve further fixation, pass the threaded rod (21) through the screw groove (16), and install the fixing nut (22) on the top thereof, tighten the fixing nut (22) to ensure that the reinforcing side seat (13) and the supporting side seat (14) are firmly connected, install the fixing nut (12) on the top of the threaded rod (11), and tighten it to make the supporting middle seat (5) and the reinforcing middle seat (6) tightly connected; Step S4: Install a reinforcement pipe (27) on the inner wall of the hollow hole (26) reserved inside the floor slab body 1 (1) and the floor slab body 2 (2), set an inner reinforcement support plate (28) inside the reinforcement pipe (27), and fix it to the inner wall of the reinforcement pipe (27) through the connecting plate (29) to form a stable support structure, fill the space between the reinforcement pipe (27), the inner reinforcement support plate (28) and the connecting plate (29) with an environmentally friendly material filling body (30), and then install a heat insulation layer (31) on the bottom and side surface of the floor slab body 1 (1) and the floor slab body 2 (2), and the production is completed.

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