Prestressed high-strength fiber reinforced concrete prefabricated composite slab

Abstract

The present invention discloses a precast prestressed high-strength fiber concrete composite slab, which specifically relates to the technical field of precast composite slabs, including a precast concrete base plate and a composite layer of concrete located on top of the precast concrete base plate, wherein the precast concrete base plate is provided with connecting grooves around the four sides, and the middle of the precast concrete base plate is provided with a first longitudinal stress steel bar and a first transverse stress steel bar perpendicular to each other. The present invention first welds the supporting vertical rods and connecting diagonal rods to the top of the first transverse stress steel bar, which is simpler than the structure in the prior art, is convenient for processing and manufacturing, and improves the welding and assembly efficiency. At the same time, the high-strength steel bar is located in the middle of the bending hook, and the two high-strength steel bars are tied together by tightening the steel wire tie. The tightening force of the high-strength steel bar can drive the two precast concrete base plates to squeeze toward the middle gap, thereby reducing the splicing gap, avoiding the poured composite layer concrete from falling off and causing waste, and improving the use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated composite panels, and more particularly to a prefabricated composite panel made of prestressed high-strength fiber concrete. Background Art

[0002] In modern architecture, precast composite slabs are an important building component and are widely used in various building structures. Composite slabs are a better structural form that combines precast and cast-in-place concrete. The precast concrete bottom slab and the upper cast-in-place concrete layer are combined into a whole and work together. The prestressed thin plate is used as the bottom formwork of the cast-in-place concrete layer. No additional formwork support is required to cast the top concrete layer and combine into a whole for support.

[0003] When pouring the top superimposed layer of concrete on existing precast concrete composite slabs, it is necessary to place and fix multiple precast concrete base plates, and then manually move the precast concrete base plates to make the two precast concrete base plates fit together, which easily leads to gaps, causing some concrete to drip when pouring the superimposed layer of concrete, resulting in waste, and it is inconvenient to narrow the gap between two adjacent precast concrete base plates when assembling multiple precast concrete base plates; and the "V"-shaped steel bar frame on the top of the existing prestressed steel bar is mostly connected by multiple "V"-shaped rods and supporting cross bars, which has a complex structure. During the early welding and production, it will affect the work efficiency, thereby affecting the processing and production efficiency. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a prefabricated prestressed high-strength fiber concrete composite slab to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a precast prestressed high-strength fiber concrete composite slab, comprising a precast concrete base plate and a composite layer of concrete located on top of the precast concrete base plate, wherein the precast concrete base plate is provided with connecting grooves on all sides, and a first longitudinal stress steel bar and a first transverse stress steel bar are provided in the middle of the precast concrete base plate, wherein the top of the first transverse stress steel bar is fixedly connected to an inclined connecting rod and a vertical supporting rod;

[0006] The inclination angles of the supporting uprights at the tops of two adjacent first transverse stress reinforcement bars are symmetrical, both ends of the first longitudinal stress reinforcement bar and the first transverse stress reinforcement bar are fixedly connected with bending hooks, the middle part of the composite layer concrete is provided with a second longitudinal stress reinforcement bar and a second transverse stress reinforcement bar, and an auxiliary pouring support mechanism is provided at part of the connection between the first longitudinal stress reinforcement bar and the first transverse stress reinforcement bar.

[0007] In a preferred embodiment, the bending hook is arranged in the middle of the connecting groove, and the bending hook is made by bending the two ends of the first longitudinal stress steel bar or the first transverse stress steel bar. The cross-sectional shape of the bending hook is set to be "L"-shaped, and the top end of the bending hook is lower than the top wall of the precast concrete base plate.

[0008] In a preferred embodiment, the first transverse stress reinforcement is arranged on the top of the first longitudinal stress reinforcement, the top end of the supporting vertical rod is fixedly connected to the middle part of the connecting diagonal rod, and the precast concrete base plate is made of a mixture of high-strength concrete and metal fiber.

[0009] In a preferred embodiment, the angle between the connecting diagonal rod and the first transverse stress reinforcement is set to degrees, the top end of the connecting diagonal rod extends to the middle of the composite layer concrete, and a top plate is provided on the top of the composite layer concrete.

[0010] In a preferred embodiment, a high-strength steel bar is provided in the middle of the connection groove, and the high-strength steel bar is provided on one side of the bending hook close to the middle of the precast concrete bottom plate.

[0011] In a preferred embodiment, a fastening steel wire tie is sleeved at a position corresponding to the bending hook between two adjacent high-strength steel bars, and the fastening steel wire tie is in contact with the bending hook.

[0012] In a preferred embodiment, the second longitudinal stress reinforcement is arranged between two adjacent connecting oblique rods, the second longitudinal stress reinforcement is in contact with the wall of the connecting oblique rods, and the wall of the second transverse stress reinforcement is in contact with the wall of the connecting oblique rods.

[0013] In a preferred embodiment, the auxiliary pouring support mechanism includes a partial concrete support block arranged at the bottom of the first transverse stress reinforcement and the first longitudinal stress reinforcement, the concrete support block is arranged directly below the connection between the first longitudinal stress reinforcement and the first transverse stress reinforcement, and a threaded barrel is fixedly connected to one side of the top of the concrete support block, and a threaded rod is inserted in the middle of the threaded barrel.

[0014] In a preferred embodiment, a limiting groove is provided on the top of the concrete support block, and the cross-sectional shape of the limiting groove is set to a "+" shape. The connection points of the first longitudinal stress steel bar and the first transverse stress steel bar are both set in the middle of the limiting groove. A pressure plate is provided on the top of the concrete support block, and one end of the pressure plate is sleeved on the middle of the threaded barrel.

[0015] In a preferred embodiment, the top end of the threaded rod is sleeved with an extrusion nut, the top of the threaded rod passes through the middle of the composite layer concrete and the top plate, the extrusion nut is arranged on the top of the top plate, and the threaded rod and the first longitudinal stress steel bar, the first transverse stress steel bar, the second longitudinal stress steel bar, and the second transverse stress steel bar are staggered with each other.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The present invention first welds the supporting vertical rod and the connecting diagonal rod to the top of the first transverse stress reinforcement bar. Compared with the structure in the prior art, it is simpler and convenient to weld on the top of the first transverse stress reinforcement bar, which is convenient for processing and manufacturing, improves the welding and assembly efficiency, and does not affect the overall strength. At the same time, the high-strength steel bar is located in the middle of the bending hook, and the two high-strength steel bars are tied tightly by tightening the steel wire tie. The tightening force of the high-strength steel bar can drive the two precast concrete base plates to squeeze toward the middle gap, narrow the splicing gap, avoid the pouring of the superimposed layer concrete, and avoid waste, thereby improving the use effect.

[0018] 2. The present invention also facilitates the generation of tension in the first transverse stress reinforcement and the first longitudinal stress reinforcement during the casting and production of the precast concrete base plate through the provision of a bending hook, thereby generating precompressive stress in the concrete and improving the overall strength. Furthermore, through the inclined arrangement of the multiple connecting oblique rods, a second longitudinal stress reinforcement can be provided on one side of the top of the connecting oblique rod. The height of the second longitudinal stress reinforcement is supported and limited by the multiple connecting oblique rods, facilitating the casting of the composite layer concrete and improving the stability of the second longitudinal stress reinforcement. Furthermore, the provision of the multiple second longitudinal stress reinforcements improves the overall strength of the composite layer concrete.

[0019] 3. The present invention also provides an auxiliary pouring support mechanism, which can support the prestressed mesh formed by welding the first longitudinal stress reinforcement and the first transverse stress reinforcement through the concrete support block and the pressure plate, so that the first longitudinal stress reinforcement and the first transverse stress reinforcement are located in the center of the precast concrete base plate, thereby improving the strength of the precast concrete base plate. The connection groove facilitates the installation of high-strength reinforcement for combined connection. The top plate, the extrusion nut, and the threaded rod cooperate to facilitate the height limitation of the top superimposed layer of concrete, thereby improving the overall strength and ensuring that multiple pouring positions are always level, thereby improving the quality of the finished product.

[0020] In summary, through the mutual influence of the above-mentioned multiple effects, the splicing gap can be reduced when laying the precast concrete base plate, avoiding the pouring of the composite layer concrete and waste. At the same time, it is convenient to process and manufacture the connecting parts, improve the welding assembly efficiency, and improve the overall strength of the composite layer concrete and limit the pouring height, so that multiple pouring positions are always level, thereby improving the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the connection structure of the precast concrete base plate and the second longitudinal stress reinforcement and the second transverse stress reinforcement of the present invention.

[0023] Figure 3 This is a schematic diagram from another angle of the connection structure between the second longitudinal stress reinforcement and the second transverse stress reinforcement and the precast concrete base plate of the present invention.

[0024] Figure 4 This is a schematic diagram of the connection structure of two precast concrete base plates after splicing.

[0025] Figure 5 This is a schematic diagram of the connection structure between the first transverse stress reinforcement bar, the first longitudinal stress reinforcement bar and the concrete support block of the present invention.

[0026] Figure 6 This is a schematic diagram of the disassembled structure of the concrete support block, threaded rod and top plate of the present invention.

[0027] The accompanying drawings are marked as follows: 1. Precast concrete base plate; 2. Connecting groove; 3. First longitudinal stress reinforcement; 4. First transverse stress reinforcement; 5. Bending hook; 6. Connecting diagonal rod; 7. Supporting vertical rod; 8. Concrete support block; 9. Threaded cylinder; 10. Limiting groove; 11. Threaded rod; 12. Extrusion nut; 13. High-strength reinforcement; 14. Fastening wire tie; 15. Second longitudinal stress reinforcement; 16. Second transverse stress reinforcement; 17. Composite layer concrete; 18. Top plate; 19. Pressure plate. DETAILED DESCRIPTION

[0028] 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.

[0029] As attached Figure 1-6The prestressed high-strength fiber concrete prefabricated composite slab shown in the figure comprises a precast concrete base plate 1 and a composite layer concrete 17 located on the top of the precast concrete base plate 1. The composite layer concrete 17 is cast and formed on the top of the precast concrete base plate 1 after laying, which can improve the connection strength between the composite layer concrete 17 and the precast concrete base plate 1 and improve the overall support strength. The precast concrete base plate 1 is provided with a connecting groove 2 around it, which makes it convenient to fill the middle of the connecting groove 2 when pouring the composite layer concrete 17, thereby improving the connection strength between the composite layer concrete 17 and the precast concrete base plate 1 and sealing the gap between the two precast concrete base plates 1, thereby improving the pouring effect and the precast concrete base plate 1. A first longitudinal stress reinforcement bar 3 and a first transverse stress reinforcement bar 4 perpendicular to each other are provided in the middle of the base plate 1. The cooperation of the first longitudinal stress reinforcement bar 3 and the first transverse stress reinforcement bar 4 improves the overall strength of the precast concrete base plate 1. The top of the first transverse stress reinforcement bar 4 is fixedly connected with an inclined connecting diagonal rod 6 and a vertically arranged supporting vertical rod 7. The supporting vertical rod 7 improves the connection strength between the connecting diagonal rod 6 and the first transverse stress reinforcement 4. The connecting diagonal rod 6 is fixed so that the top end of the connecting diagonal rod 6 is located in the middle of the superimposed layer concrete 17, thereby further improving the connection strength between the superimposed layer concrete 17 and the precast concrete base plate 1, so that the superimposed layer concrete 17 and the precast concrete base plate 1 form a whole.

[0030] The inclination angles of the support uprights 7 at the tops of the two adjacent first transverse stress reinforcement bars 4 are symmetrical. The support and positioning of the second longitudinal stress reinforcement bars 15 can be achieved by different angles of the support uprights 7, which is convenient for pouring the composite layer concrete 17 and positioning the second longitudinal stress reinforcement bars 15 during pouring. The first longitudinal stress reinforcement bars 3 and the first transverse stress reinforcement bars 4 are fixedly connected at both ends with bending hooks 5. The bending hooks 5 are convenient for tensioning the two ends of the first longitudinal stress reinforcement bars 3 and the first transverse stress reinforcement bars 4, so that precompressive stress is generated in the concrete. The middle part of the composite layer concrete 17 is provided with the second longitudinal stress reinforcement bars 15 and the second transverse stress reinforcement bars 16. The strength of the composite layer concrete 17 is improved by the second longitudinal stress reinforcement bars 15 and the second transverse stress reinforcement bars 16, further improving the overall strength. An auxiliary pouring support mechanism is provided at part of the connection between the first longitudinal stress reinforcement bars 3 and the first transverse stress reinforcement bars 4, which is convenient for positioning and supporting the position and height of the first longitudinal stress reinforcement bars 3 and the first transverse stress reinforcement bars 4 when pouring the precast concrete bottom plate 1, to avoid the first longitudinal stress reinforcement bars 3 and the first transverse stress reinforcement bars 4 moving during pouring, affecting the quality of the finished product.

[0031] As attached Figure 2-4As shown, the bending hook 5 is arranged in the middle of the connecting groove 2. The bending hook 5 is made by bending the two ends of the first longitudinal stress steel bar 3 or the first transverse stress steel bar 4. The cross-sectional shape of the bending hook 5 is set to be "L"-shaped. The top of the bending hook 5 is lower than the top wall of the precast concrete base plate 1, which improves the connection strength between the bending hook 5 and the first longitudinal stress steel bar 3 or the first transverse stress steel bar 4, facilitates production and use, and facilitates the combination and connection of two precast concrete base plates 1 through the bending hook 5, and improves the stress strength and overall strength.

[0032] As attached Figure 4 、 5 As shown, the first transverse stress reinforcement 4 is arranged on the top of the first longitudinal stress reinforcement 3, the top of the supporting vertical rod 7 is fixedly connected to the middle of the connecting diagonal rod 6, and the precast concrete base plate 1 is made of a mixture of high-strength concrete and metal fiber, which improves the strength of the connecting diagonal rod 6 and the overall strength of the precast concrete base plate 1.

[0033] As attached Figure 1 、 5 As shown, the angle between the connecting diagonal rod 6 and the first transverse stress reinforcement bar 4 is set to 45 degrees, and the top end of the connecting diagonal rod 6 extends to the middle of the composite layer concrete 17. A top plate 18 is provided on the top of the composite layer concrete 17. By checking whether the top connecting diagonal rods 6 of the two first transverse stress reinforcement bars 4 correspond to each other and adjusting the offset angle, the placement height of the top second longitudinal stress reinforcement bar 15 can be changed to improve the use effect. The top plate 18 can be used to assist in positioning the top wall of the composite layer concrete 17 during pouring and use.

[0034] As attached Figure 2 、 4 As shown, a high-strength steel bar 13 is provided in the middle of the connecting groove 2. The high-strength steel bar 13 is arranged on one side of the bending hook 5 close to the middle of the precast concrete base plate 1. The high-strength steel bar 13 is positioned by the bending hook 5, and the high-strength steel bar 13 is used to improve the supporting strength of the connection between the two precast concrete base plates 1 of the finished floor slab.

[0035] As attached Figure 2 、 4 As shown, a fastening steel wire tie 14 is provided at a position corresponding to the bending hook 5 between two adjacent high-strength steel bars 13. The fastening steel wire tie 14 fits the bending hook 5. The fastening steel wire tie 14 improves the connection strength of the two high-strength steel bars 13, thereby improving the fitting strength between the two precast concrete base plates 1. Moreover, the high-strength steel bars 13 pull the bending hook 5, thereby improving the prestressed strength of the first transverse stress steel bar 4.

[0036] As attached Figure 2-5As shown, the second longitudinal stress reinforcement bar 15 is arranged between two adjacent connecting diagonal bars 6, the second longitudinal stress reinforcement bar 15 is in contact with the wall of the connecting diagonal bars 6, and the wall of the second transverse stress reinforcement bar 16 is in contact with the wall of the connecting diagonal bars 6. The second longitudinal stress reinforcement bar 15 can be suspended on the top of the precast concrete base plate 1 by connecting the diagonal bars 6, which is convenient for pouring the composite layer concrete 17. The stability of the second longitudinal stress reinforcement bar 15 can be improved by connecting the diagonal bars 6, and the second transverse stress reinforcement bar 16 can be located directly above the first transverse stress reinforcement bar 4, and the second longitudinal stress reinforcement bar 15 can be located directly above the first longitudinal stress reinforcement bar 3, thereby improving the overall strength of the combination of the composite layer concrete 17 and the precast concrete base plate 1.

[0037] As attached Figure 5 、 6 As shown, the auxiliary pouring support mechanism includes a partial concrete support block 8 arranged at the bottom of the first transverse stress reinforcement 4 and the first longitudinal stress reinforcement 3. The concrete support block 8 is arranged directly below the connection between the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4. A threaded cylinder 9 is fixedly connected to one side of the top of the concrete support block 8. A threaded rod 11 is inserted into the middle of the threaded cylinder 9. The first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 are supported by the concrete support block 8. When the precast concrete base plate 1 is cast and formed, the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 are located in the center of the precast concrete base plate 1, thereby improving the strength of the precast concrete base plate 1 and being conveniently connected to the precast concrete base plate 1 for use through the threaded rod 11.

[0038] As attached Figure 6 As shown, a limiting groove 10 is provided on the top of the concrete support block 8, and the cross-sectional shape of the limiting groove 10 is set to a "+" shape. The connection points of the first longitudinal stress steel bar 3 and the first transverse stress steel bar 4 are both set in the middle of the limiting groove 10. A pressure plate 19 is provided on the top of the concrete support block 8, and one end of the pressure plate 19 is sleeved on the middle of the threaded tube 9. The placement of the first longitudinal stress steel bar 3 and the first transverse stress steel bar 4 is limited by the limiting groove 10, thereby improving the stability of the first longitudinal stress steel bar 3 and the first transverse stress steel bar 4, thereby improving the casting effect, and the pressure plate 19 squeezes the top of the first longitudinal stress steel bar 3 and the first transverse stress steel bar 4 to improve the connection strength of the first longitudinal stress steel bar 3 and the first transverse stress steel bar 4 with the concrete support block 8.

[0039] As attached Figure 6As shown, the top end of the threaded rod 11 is sleeved with an extrusion nut 12, and the top of the threaded rod 11 passes through the middle of the composite layer concrete 17 and the top plate 18. The extrusion nut 12 is set on the top of the top plate 18. The threaded rod 11 and the first longitudinal stress steel bar 3, the first transverse stress steel bar 4, the second longitudinal stress steel bar 15, and the second transverse stress steel bar 16 are staggered with each other. The top plate 18 is used to assist in positioning the top wall of the poured composite layer concrete 17, and the top threaded connection ring of the threaded rod 11 is used to facilitate the lifting and use of the precast concrete base plate 1. The extrusion nut 12 squeezes the top plate 18, thereby improving the extrusion strength of the top plate 18 on the supporting column 7 and improving the use effect.

[0040] Working principle of the present invention: When making and using, the concrete support block 8 is placed in the preset position, and the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 are vertically distributed, so that the intersection of the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 is located in the middle of the limit groove 10, as shown in the appendix of the manual. Figure 5 As shown, the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 are supported by the concrete support block 8, and then a pressure plate 19 is sleeved on the middle of the threaded cylinder 9 to squeeze and position the top of the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4;

[0041] Then, external tension is applied to the first transverse stress reinforcement 4 and the first longitudinal stress reinforcement 3 by the bending hook 5 to generate prestress, and the high-strength concrete mixed with metal fibers can be poured into the precast concrete base plate 1. At the same time, the bending hooks 5 at both ends of the first longitudinal stress reinforcement 3 and the first transverse stress reinforcement 4 are located at the connecting grooves 2 around the finished precast concrete base plate 1. At this time, the top end of the connecting diagonal rod 6 is located at the top of the precast concrete base plate 1.

[0042] When the precast concrete base plate 1 is assembled and poured into the superimposed layer concrete 17, a high-strength steel bar 13 is placed in the middle of the bending hook 5, and the two high-strength steel bars 13 are tied together by tightening the steel wire tie 14, so that the bending hooks 5 in the middle of the two precast concrete base plates 1 generate pressure to improve the combined strength;

[0043] Then, a second longitudinal stress steel bar 15 is placed on the top of multiple connecting diagonal rods 6 to support and limit the second longitudinal stress steel bar 15 through the connecting diagonal rods 6 to improve the stability of the second longitudinal stress steel bar 15. Then, a plurality of second transverse stress steel bars 16 are set on the top of the second longitudinal stress steel bar 15 on one side of the connecting diagonal rod 6, and the second transverse stress steel bars 16 and the second longitudinal stress steel bars 15 are bound and fixed by steel wire. Concrete can be poured to form an overlapping layer concrete 17, and the concrete is located in the middle of the connecting groove 2. The top of the connecting diagonal rod 6 is located in the middle of the overlapping layer concrete 17, thereby improving the connection strength between the overlapping layer concrete 17 and the precast concrete base plate 1 to avoid delamination, while improving the overall prestressing and support strength, thereby improving the use effect.

[0044] The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. In the absence of conflicts, the same embodiment and different embodiments of the present invention may be combined with each other.

[0045] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. A precast composite slab of prestressed high-strength fiber concrete, comprising a precast concrete base plate (1) and a composite layer of concrete (17) located on top of the precast concrete base plate (1), characterized in that: The precast concrete base plate (1) is provided with connection grooves (2) around its periphery, and a first longitudinal stress steel bar (3) and a first transverse stress steel bar (4) perpendicular to each other are provided in the middle of the precast concrete base plate (1), and the top of the first transverse stress steel bar (4) is fixedly connected with an inclined connecting rod (6) and a vertically arranged supporting rod (7); The supporting uprights (7) at the tops of two adjacent first transverse stress reinforcement bars (4) are symmetrical in inclination angles, both ends of the first longitudinal stress reinforcement bar (3) and the first transverse stress reinforcement bar (4) are fixedly connected with bending hooks (5), a second longitudinal stress reinforcement bar (15) and a second transverse stress reinforcement bar (16) are provided in the middle of the composite layer concrete (17), and an auxiliary pouring support mechanism is provided at a portion of the connection between the first longitudinal stress reinforcement bar (3) and the first transverse stress reinforcement bar (4); A bending hook (5) is provided in the middle of the connecting groove (2), and the bending hook (5) is made by bending the two ends of the first longitudinal stress steel bar (3) or the first transverse stress steel bar (4). The cross-sectional shape of the bending hook (5) is set to be "L"-shaped, and the top end of the bending hook (5) is lower than the top wall of the precast concrete bottom plate (1); A high-strength steel bar (13) is provided in the middle of the connecting groove (2), and the high-strength steel bar (13) is provided on one side of the bending hook (5) close to the middle of the precast concrete base plate (1), and the high-strength steel bar (13) is positioned by the bending hook (5); a fastening steel wire tie (14) is provided between two adjacent high-strength steel bars (13) at positions corresponding to the bending hook (5), and the fastening steel wire tie (14) is in contact with the bending hook (5).

2. The prefabricated prestressed high-strength fiber reinforced concrete composite slab according to claim 1, characterized in that: The first transverse stress reinforcement (4) is arranged on the top of the first longitudinal stress reinforcement (3), the top end of the supporting vertical rod (7) is fixedly connected to the middle part of the connecting diagonal rod (6), and the precast concrete base plate (1) is made of a mixture of high-strength concrete and metal fibers.

3. The prefabricated prestressed high-strength fiber reinforced concrete composite slab according to claim 1, characterized in that: The angle between the connecting diagonal rod (6) and the first transverse stress reinforcement bar (4) is set to 45 degrees, the top end of the connecting diagonal rod (6) extends to the middle of the laminated layer concrete (17), and a top plate (18) is provided on the top of the laminated layer concrete (17).

4. The prestressed high-strength fiber reinforced concrete prefabricated composite slab according to claim 1, characterized in that: The second longitudinal stress reinforcement bar (15) is arranged between two adjacent connecting oblique rods (6), the second longitudinal stress reinforcement bar (15) is in contact with the wall of the connecting oblique rod (6), and the wall of the second transverse stress reinforcement bar (16) is in contact with the wall of the connecting oblique rod (6).

5. The prefabricated prestressed high-strength fiber reinforced concrete composite slab according to claim 1, characterized in that: The auxiliary pouring support mechanism comprises a partial concrete support block (8) arranged at the bottom of the first transverse stress reinforcement (4) and the first longitudinal stress reinforcement (3); the concrete support block (8) is arranged directly below the connection between the first longitudinal stress reinforcement (3) and the first transverse stress reinforcement (4); a threaded barrel (9) is fixedly connected to one side of the top of the concrete support block (8); a threaded rod (11) is inserted into the middle of the threaded barrel (9).

6. The prefabricated prestressed high-strength fiber reinforced concrete composite slab according to claim 5, characterized in that: A limiting groove (10) is provided on the top of the concrete support block (8), and the cross-sectional shape of the limiting groove (10) is set to be a "+" shape. The connection points of the first longitudinal stress steel bar (3) and the first transverse stress steel bar (4) are both set in the middle of the limiting groove (10). A pressing plate (19) is provided on the top of the concrete support block (8), and one end of the pressing plate (19) is sleeved on the middle of the threaded cylinder (9).

7. The prefabricated prestressed high-strength fiber reinforced concrete composite slab according to claim 5, characterized in that: The top end of the threaded rod (11) is sleeved with an extrusion nut (12), the top of the threaded rod (11) passes through the middle of the laminated layer concrete (17) and the top plate (18), the extrusion nut (12) is arranged on the top of the top plate (18), and the threaded rod (11) and the first longitudinal stress steel bar (3), the first transverse stress steel bar (4), the second longitudinal stress steel bar (15), and the second transverse stress steel bar (16) are mutually dislocated.

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