A prefabricated beam-slab integrated floor slab and its construction method

Abstract

An integrated prefabricated beam-slab floor system and its construction method are disclosed. A T-slab unit includes a top slab, rib beams, and transverse diaphragms. The top surface of the top slab on the splicing side has a groove communicating with the splicing side, extending longitudinally along the T-slab unit. Transverse diaphragms are fixed to the spans and ends of the rib beams, connecting the top slab and rib beams into a whole. After adjacent T-slab units are connected, the grooves of adjacent top slabs are spliced ​​to form a connecting groove for casting UHPC (Unified High-Pressure Polymer). A spacing for casting UHPC is provided between the corresponding transverse diaphragms of adjacent T-slab units. Adjacent T-slab units are connected by casting UHPC within the connecting groove and the spacing between adjacent transverse diaphragms. Simultaneously, the outermost transverse beams at both longitudinal ends of the T-slab cooperate with the sliding support beams for sliding construction. After sliding is completed, the two are connected by casting UHPC to form an integral load-bearing edge beam, thereby further improving the load-bearing capacity and integrity of the floor system. This invention improves both the construction convenience of prefabricated floor systems and the load-bearing capacity and overall rigidity of prefabricated floor systems.

Description

Technical Field

[0001] This invention relates to the field of prefabricated modular floor slabs and their construction technology, and in particular to a prefabricated beam-slab integrated floor slab and its construction method. Background Technology

[0002] In recent years, the use of prefabricated buildings in modern construction has gradually increased. T-shaped slabs, with their excellent structural mechanical properties, high economic efficiency, and convenient construction, are widely used in structures with large spans and large areas. In structures using T-shaped slabs, the connection between adjacent T-shaped slabs is crucial to the overall structural integrity. Traditional slab connection methods often use connectors or welded steel plates. While these methods are simple to operate, they result in poor overall connection integrity, and cracks are prone to appear at the slab joints, making them unsuitable for seismic fortification areas.

[0003] Furthermore, in prefabricated building construction technology, existing prefabricated floor slabs are generally installed using hoisting methods. However, prefabricated floor slabs used in large-span buildings require large cranes due to their heavy weight. When there are obstacles above the building (such as building a large-span building under a track or adding an elevated floor inside a factory), the space below the obstacle may be too small to allow for hoisting. T-slab floor slabs are inconvenient to install in such situations, greatly reducing construction efficiency. Moreover, the inconvenience of installation exacerbates the problem of slab joints. Therefore, how to install prefabricated floor slabs under large-span buildings is an urgent problem to be solved. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a prefabricated beam-slab integrated floor system and its construction method that offers high-performance joints, improves the overall integrity and rigidity of the floor system, and enhances construction convenience.

[0005] To achieve the above objectives, this invention first proposes a prefabricated beam-slab integrated floor slab, comprising one or more T-slab units. Each T-slab unit includes a top slab, rib beams, and transverse diaphragms. The top slab has a groove on its top surface near the splicing side, communicating with the splicing side. The groove extends longitudinally along the T-slab unit. Transverse diaphragms are fixed to the spans and ends of the rib beams, connecting the top slab and rib beams into a whole. Pre-installed outward reinforcing bars are provided in the groove, as well as on the splicing side and bottom of the transverse diaphragms. After adjacent T-slab units are connected, the grooves of adjacent top slabs splice... A connecting groove is formed for casting UHPC. A spacing for casting UHPC is provided between the transverse diaphragms corresponding to adjacent T-plate units. Adjacent T-plate units are connected by casting UHPC within the connecting groove and the spacing between adjacent transverse diaphragms. After multiple T-plate units are connected as a whole, the transverse diaphragms placed at the outermost ends of their longitudinal direction are connected to form a whole T-plate end beam. The T-plate end beam cooperates with the sliding support beam for sliding construction. After the sliding is completed, the T-plate end beam and the sliding support beam are connected by casting UHPC to form an integral load-bearing edge beam.

[0006] In this embodiment, horizontally arranged steel mesh is pre-embedded in the top plate, on its top side and bottom side. The steel mesh on the top side of the top plate extends horizontally from the splicing side of the top plate into the groove to form transverse steel bars. The transverse steel bars extend and cover the top of the groove. The top plate pre-embeds pre-embedded steel bars at the bottom of the groove. The pre-embedded steel bars are parallel to and in the same direction as the transverse steel bars, and the pre-embedded steel bars cover the bottom of the groove.

[0007] In this embodiment, the transverse steel bars and the embedded steel bars constitute the extended steel bars of the T-plate; after the adjacent T-plate units are connected as a whole, the extended steel bars of the T-plates of the adjacent T-plate units are connected by the additional transverse steel bars of the T-plate. The additional transverse steel bars of the T-plate are provided in two layers, and the two layers of additional transverse steel bars of the T-plate correspond to the transverse steel bars and the embedded steel bars respectively, thereby connecting the corresponding transverse steel bars and the embedded steel bars of the adjacent T-plate units.

[0008] In this embodiment, the groove is also provided with additional longitudinal reinforcement bars for the T-plate arranged perpendicularly to the additional transverse reinforcement bars of the T-plate. The additional longitudinal reinforcement bars for the T-plate are arranged horizontally and there are two layers. The additional longitudinal reinforcement bars for the T-plate on both sides are connected by two layers of additional transverse reinforcement bars to form a steel mesh structure.

[0009] In this embodiment, the transverse beam includes a first transverse beam and a second transverse beam. Adjacent rib beams are connected by multiple first transverse beams. Multiple second transverse beams are fixed on the outer side of the outermost rib beam of the T-plate unit. The first and second transverse beams on the outermost sides of the T-plate unit in the longitudinal direction are connected to the rib beams to form the T-plate end transverse beams.

[0010] In this embodiment, both the first and second transverse diaphragms have vertically arranged longitudinal outward reinforcing bars at their bottoms. One end of each longitudinal outward reinforcing bar is embedded in the first and second transverse diaphragms, and the other end extends vertically out of their bottoms. The side of the second transverse diaphragm has transverse outward reinforcing bars arranged parallel to the transverse reinforcing bars. One end of each transverse outward reinforcing bar is embedded in the second transverse diaphragm, and the other end extends horizontally out of the second transverse diaphragm. After adjacent T-plate units are connected as a whole, there is a gap between the corresponding second transverse diaphragms of adjacent T-plate units. The transverse outward reinforcing bars are placed in the gaps. The corresponding transverse outward reinforcing bars in the gaps are connected by additional transverse reinforcing bars. The additional transverse reinforcing bars in the same vertical direction are connected by vertically arranged additional longitudinal reinforcing bars. The two ends of the additional longitudinal reinforcing bars are provided with hooks and connected to the additional transverse reinforcing bars to form a reinforcing mesh structure.

[0011] In this embodiment, multiple first transverse beams are arranged longitudinally along the T-plate unit in the span of the rib beam, and multiple second transverse beams are arranged longitudinally along the T-plate unit at the span ends of the rib beam. The distance between adjacent first transverse beams is 6~10m, and the distance between adjacent second transverse beams is 6~10m.

[0012] In this embodiment, the length of the transverse outward extension bar of the transverse diaphragm extending beyond the second transverse diaphragm is 8d to 10d, where d is the diameter of the transverse outward extension bar of the transverse diaphragm.

[0013] In this embodiment, the width of the T-slab end beam and the sliding support beam are the same. The sliding support beam also has pre-reserved outward reinforcing bars corresponding to the longitudinal outward reinforcing bars of the transverse diaphragm. The longitudinal outward reinforcing bars of the transverse diaphragm on the T-slab end beam and the outward reinforcing bars on the sliding support beam are staggered. After the sliding construction is completed, the joint between the T-slab end beam and the sliding support beam is formed into an integral load-bearing frame beam by UHPC casting.

[0014] This invention also includes a construction method for an integrated beam-slab floor system, specifically comprising the following steps:

[0015] S1, T-plate units are manufactured according to actual engineering requirements;

[0016] S2, transport the prefabricated T-slab units to the construction site, and select the sliding equipment according to the sliding distance and weight. The sliding equipment includes hydraulic crawlers and steel rail slides;

[0017] S3, erect a temporary support platform, and plan the sliding route on the sliding support beam at the top of the support platform. Fix the rail slide to the sliding support beam with rail pressure plates. The spacing between the rail pressure plates shall not exceed 800mm.

[0018] S4. Hoist the prefabricated T-plate unit onto the rail slide. After the T-plate unit is in place, install the hydraulic crawler.

[0019] S5, start the hydraulic crawler to slide the T-plate unit along the rail slide to the set position. During the sliding process, monitor the sliding speed, sliding direction and sliding distance to ensure smooth sliding.

[0020] S6. After the T-plate unit is slid into place, it is precisely positioned to ensure that it matches the design position.

[0021] S7. Repeat steps S4, S5, and S6. After all T-slab units are installed in place, connect adjacent T-slab units with the outward reinforcing bars, and pour UHPC into the connection groove formed by the groove splicing and the gap formed between the adjacent transverse beams to form an integral load-bearing T-slab floor slab, and then cure it.

[0022] S8, retain the rail slideway, use additional steel bars to connect the longitudinal outward reinforcing bars of the transverse beam on the T-slab end beam to the outward reinforcing bars on the sliding support beam, and cast UHPC on site in one go to cast the T-slab end beam, sliding support beam and rail slideway into a whole, and cure it, and finally remove the support platform.

[0023] Due to the above structure, the present invention has the following advantages:

[0024] 1. Based on the ultra-high strength and durability of UHPC, the present invention uses UHPC to cast the groove at the joint of T-plates, which can be fully anchored with the steel bars in the groove, greatly improving the integrity of the T-plate connection and reducing cracks at the joint; at the same time, the use of UHPC to cast at the joint can also achieve tight short joints between components, thereby reducing material usage and improving the assembly rate.

[0025] 2. Depending on its span and stress characteristics, the T-slab unit can be either a conventional concrete beam-slab unit or a prestressed concrete beam-slab unit. Transverse diaphragms are arranged between the T-slab ribs, and these diaphragms are connected by anchoring with extended steel bars and casting UHPC, making the T-slab a two-way load-bearing member. This enhances the overall integrity and rigidity of the floor slab. Moreover, this type of T-slab floor slab with high inherent rigidity is suitable for sliding construction in environments with obstacles above, which can improve construction efficiency. In addition, the end frame beams are split into T-slab end beams and sliding support beams, which not only meet the requirements of sliding construction and reduce costs, but also make the T-slab and frame beams and columns form an integral floor slab, thereby improving its overall load-bearing performance.

[0026] 3. The groove on the top of the T-slab of this invention can serve as a template for casting UHPC, eliminating the need for formwork erection and dismantling. It can also be rigidly connected based on its stress characteristics, with the T-slab connection and the transverse beam connection section flush. Outward-extending reinforcing bars are placed at the T-slab connection section and connected by additional reinforcing bars. When the T-slab and transverse beam are connected, a template is used to jointly cast the UHPC to form an integral floor slab, meeting higher rigidity requirements. The transverse beams arranged between the T-slab ribs are connected by anchoring with outward-extending reinforcing bars and casting UHPC, making the T-slab a two-way load-bearing component, enhancing the overall integrity and rigidity of the floor slab. Furthermore, this type of T-slab floor slab with high inherent rigidity is suitable for sliding construction in environments with overhead obstacles, improving construction efficiency.

[0027] 4. In this invention, after multiple T-slab units are connected as a whole, the transverse diaphragm beams placed at the outermost ends of the longitudinal direction are connected to form a whole T-slab end beam. The T-slab end beam cooperates with the sliding support beam for sliding construction. After the sliding is completed, the T-slab end beam and the sliding support beam are connected by casting UHPC to form an integral load-bearing edge beam. In this way, the construction convenience of the precast floor slab is improved, and the load-bearing capacity and overall rigidity of the prefabricated floor slab are also improved.

[0028] In summary, compared with traditional hoisting construction, the sliding construction method of this invention has relatively smaller errors. Side sliding installation effectively avoids obstacles from the overhead structure that may be encountered in traditional hoisting operations. Furthermore, the end frame beams are split into T-slab end beams and sliding support beams, which not only meets the requirements of sliding construction and reduces costs, but also allows the T-slab to form an integral floor slab with the frame beams and columns, thereby improving its overall load-bearing performance. In addition, the T-slab units of this invention can be selected and manufactured according to the actual transportation and hoisting conditions of the project. Compared with ordinary concrete, ultra-high performance concrete (UHPC) has higher strength, better durability, and better resistance to chemical corrosion. In particular, the steel fibers allow tensile forces to still be transmitted between cracked concrete. Casting UHPC at the joints ensures sufficient anchorage between the reinforcing steel and the UHPC. Combined with the ultra-high strength and durability of UHPC, this greatly enhances the integrity and rigidity of the assembled floor slab. Attached Figure Description

[0029] Figure 1 This is a perspective view of the T-plate unit of the present invention.

[0030] Figure 2 This is a schematic diagram of the connection node structure of the present invention.

[0031] Figure 3 This is the present invention. Figure 2 Enlarged view of point A.

[0032] Figure 4 This is a structural schematic diagram of the T-plate unit of the present invention, with one side being the splicing side.

[0033] Figure 5 This is a structural diagram of the T-plate unit of the present invention, where both sides are splicing sides.

[0034] Figure 6 This is a structural schematic diagram of an integrated beam-slab floor system according to the present invention.

[0035] Figure 7 This is another structural schematic diagram of the prefabricated beam-slab integrated floor slab of the present invention.

[0036] Figure 8 This is a schematic diagram of the sliding construction of the present invention.

[0037] In the diagram, 1. T-slab unit; 2. Groove; 3. Top slab; 4. T-slab extended reinforcement; 41. Transverse reinforcement; 42. Bottom embedded reinforcement; 5. Additional transverse reinforcement of T-slab; 6. Additional longitudinal reinforcement of T-slab; 7. First transverse diaphragm beam; 8. Transverse extended reinforcement of transverse diaphragm beam; 9. Longitudinal extended reinforcement of transverse diaphragm beam; 10. Additional transverse reinforcement of transverse diaphragm beam; 11. T-slab end beam; 12. Sliding support beam; 13. Second transverse diaphragm beam; 14. Rib beam; 15. UHPC; 16. Support platform. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0040] like Figures 1 to 8 The prefabricated beam-slab integrated floor system shown includes one or more prefabricated beam-slab integrated units, referred to as T-slab units 1. Each T-slab unit 1 has an identical structure, including a top slab 3, rib beams 14, and transverse diaphragms. Depending on the span and stress characteristics, T-slab units 1 can be either ordinary concrete beam-slab units or prestressed concrete beam-slab units. On the top surface of the splicing side of the top slab 3, there is a groove 2 communicating with the splicing side. The groove 2 extends longitudinally along the T-slab unit 1. In this embodiment, the longitudinal direction is along the connection joint direction of the T-slab unit, and the transverse direction is perpendicular to the connection joint direction of the T-slab unit. After adjacent T-slab units are connected as a whole, the grooves of adjacent T-slab units are spliced ​​to form a connecting groove for casting UHPC (Ultra-High-Pressure Polymer), and the protruding reinforcing bars are placed within the connecting groove. Adjacent T-slab units 1 are connected by casting UHPC within the connecting groove.

[0041] Furthermore, horizontally arranged steel mesh is pre-embedded in the top plate 3, on its top and bottom sides. The steel mesh on the top side of the top plate 3 extends horizontally from the splicing side of the top plate 3 into the groove 2 to form a transverse steel bar 41. The transverse steel bar 41 extends to cover the top of the groove 2. The top plate 3 pre-embeds a pre-embedded steel bar 42 at the bottom of the groove 2. The pre-embedded steel bar 42 is parallel to and in the same direction as the transverse steel bar 41. The pre-embedded steel bar 42 covers the bottom of the groove.

[0042] The transverse reinforcing bars 41 and the embedded reinforcing bars 42 constitute the T-plate extended reinforcing bars 4; after adjacent T-plate units 1 are connected as a whole, the T-plate extended reinforcing bars 4 of adjacent T-plate units 1 are connected by T-plate additional transverse reinforcing bars 5. The T-plate additional transverse reinforcing bars 5 are provided in two layers, and the two layers of T-plate additional transverse reinforcing bars 5 correspond to the transverse reinforcing bars 41 and the embedded reinforcing bars 42 respectively, thereby connecting the corresponding transverse reinforcing bars 41 and the embedded reinforcing bars 42 of adjacent T-plate units 1; the groove 2 is also provided with T-plate additional longitudinal reinforcing bars 6 arranged perpendicularly to the T-plate additional transverse reinforcing bars 5. The T-plate additional longitudinal reinforcing bars 6 are arranged horizontally and are provided in two layers. The T-plate additional longitudinal reinforcing bars 6 on both sides are connected by two layers of T-plate additional transverse reinforcing bars 5 to form a reinforcing mesh structure.

[0043] like Figure 1 , 2 As shown, the T-plate unit has transverse diaphragms fixed on the span and ends of the rib beam 14. The transverse diaphragms are perpendicular to the top plate and the rib beam 14. The transverse diaphragms connect the top plate and the rib beam 14 into a whole. The transverse diaphragms include a first transverse diaphragm 7 and a second transverse diaphragm 13. Adjacent rib beams 14 are connected by multiple first transverse diaphragms 7. Multiple second transverse diaphragms 13 are fixed on the outer side of the outermost rib beam 14 of the T-plate unit 1. The rib beams, first transverse diaphragms 7 and second transverse diaphragms 13 on both ends of the T-plate unit along the longitudinal direction are connected to form the T-plate end transverse beam 11. The T-plate end transverse beam 11 cooperates with the sliding support beam 12 for sliding construction.

[0044] The bottom of the transverse diaphragm is provided with vertically arranged longitudinal outward reinforcing bars 9. One end of the longitudinal outward reinforcing bars 9 is embedded in the transverse diaphragm, and the other end extends vertically out of its bottom. The side of the second transverse diaphragm 13 is provided with transverse outward reinforcing bars 8 arranged parallel to the transverse reinforcing bars 41. One end of the transverse outward reinforcing bars 8 is embedded in the second transverse diaphragm 13, and the other end extends horizontally out of the second transverse diaphragm 13. After the adjacent T-plate units 1 are connected as a whole, there is a gap between the corresponding second transverse diaphragms 13 of the adjacent T-plate units 1. The transverse outward reinforcing bars 8 of the transverse diaphragm are set in the gap. The corresponding transverse outward reinforcing bars 8 of the transverse diaphragm in the gap are connected by additional transverse reinforcing bars 10 of the transverse diaphragm. The additional transverse reinforcing bars 10 of the transverse diaphragm in the same vertical direction are connected by vertically arranged additional longitudinal reinforcing bars of the transverse diaphragm. The two ends of the additional longitudinal reinforcing bars are provided with hooks and connected with the additional transverse reinforcing bars 10 of the transverse diaphragm to form a reinforcing mesh structure.

[0045] Furthermore, multiple first transverse diaphragm beams 7 are arranged longitudinally along the T-plate unit in the span of the rib beam 14, and multiple second transverse diaphragm beams 13 are arranged longitudinally along the T-plate unit at the ends of the rib beam 14. The spacing between adjacent first transverse diaphragm beams 7 is 6~10m, and the spacing between adjacent second transverse diaphragm beams 13 is 6~10m. The height H of the transverse diaphragm beam is 3 / 4 of the height of the rib beam, and the length of the transverse outward extension bar 8 of the transverse diaphragm beam extending beyond the second transverse diaphragm beam 13 is 8d~10d (d is the diameter of the transverse outward extension bar 8 of the transverse diaphragm beam).

[0046] Furthermore, the width of the T-slab end beam 11 is the same as that of the sliding support beam 12. The sliding support beam 12 also has pre-reserved outward reinforcing bars corresponding to the longitudinal outward reinforcing bars 9 of the transverse diaphragm. The longitudinal outward reinforcing bars 9 of the transverse diaphragm on the T-slab end beam 11 and the outward reinforcing bars on the sliding support beam 12 are staggered. The reinforcement configuration in the T-slab end beam 11 and the sliding support beam 12 both meet the load-bearing capacity requirements of the sliding construction and the final overall work. After the sliding construction, the joint between the T-slab end beam 11 and the sliding support beam 12 is cast using UHPC to form an integral load-bearing frame beam.

[0047] like Figure 8 The construction method of the prefabricated beam-slab integrated floor slab of the present invention specifically includes the following steps:

[0048] S1, T-plate units are manufactured according to actual engineering requirements;

[0049] S2, transport the prefabricated T-slab units to the construction site, and select the sliding equipment according to the sliding distance and weight. The sliding equipment includes hydraulic crawlers and steel rail slides;

[0050] S3, erect a temporary support platform 16, and on the sliding support beam at the top of the support platform 16, plan the sliding route, and fix the rail slide to the sliding support beam through the rail pressure plate, with the rail pressure plate spacing not exceeding 800mm;

[0051] S4. Hoist the prefabricated T-plate unit onto the rail slide. After the T-plate unit is in place, install the hydraulic crawler.

[0052] S5, start the hydraulic crawler to slide the T-plate unit along the rail slide to the set position. During the sliding process, monitor the sliding speed, sliding direction and sliding distance to ensure smooth sliding.

[0053] S6. After the T-plate unit is slid into place, it is precisely positioned to ensure that it matches the design position.

[0054] S7. Repeat steps S4, S5, and S6. After all T-slab units are installed in place, connect adjacent T-slab units with the outward reinforcing bars, and pour UHPC into the connection groove formed by the groove splicing and the gap formed between the adjacent transverse beams to form an integral load-bearing T-slab floor slab, and then cure it.

[0055] S8, retain the rail slideway, use additional steel bars to connect the longitudinal outward reinforcing bars of the transverse beam on the T-slab end beam to the outward reinforcing bars on the sliding support beam, and cast UHPC on site in one go to cast the T-slab end beam, sliding support beam and rail slideway into a whole, and cure it, and finally remove the support platform.

[0056] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A prefabricated beam-slab integrated floor slab, characterized in that: The T-plate unit (1) includes a top plate (3), rib beams (14), and transverse beams. The top plate (3) has a groove (2) on its top surface near the splicing side, which is connected to the splicing side. The groove (2) extends longitudinally along the T-plate unit (1). Transverse beams are fixed on the spans and ends of the rib beams (14). The transverse beams connect the top plate (3) and the rib beams (14) into a whole. The groove (2) and the splicing side and bottom of the transverse beams are provided with reserved outward reinforcing bars. After the adjacent T-plate units (1) are connected, the grooves (2) of the adjacent top plates (3) are spliced ​​to form a UHPC (1) for casting. 5) The connecting groove is provided between the transverse diaphragms corresponding to the adjacent T plate units (1) for casting UHPC (15). The adjacent T plate units (1) are connected by casting UHPC (15) in the connecting groove and the spacing between the adjacent transverse diaphragms. After the multiple T plate units (1) are connected as a whole, the transverse diaphragms placed at the outermost ends of their longitudinal direction are connected to form the T plate end beam (11). The T plate end beam (11) and the sliding support beam (12) are used for sliding construction. After the sliding is completed, the T plate end beam (11) and the sliding support beam (12) are connected by casting UHPC to form an integral load-bearing side beam.

2. The prefabricated beam-slab integrated floor slab according to claim 1, characterized in that: The top plate (3) has horizontally arranged steel mesh embedded in its top and bottom sides. The steel mesh on the top side of the top plate (3) extends horizontally from the splicing side of the top plate (3) to the groove (2) to form a transverse steel bar (41). The transverse steel bar (41) extends to cover the top of the groove (2). The top plate (3) has pre-embedded steel bars at the bottom of the groove (2). The pre-embedded steel bars are parallel to and in the same direction as the transverse steel bars (41). The pre-embedded steel bars cover the bottom of the groove (2).

3. The prefabricated beam-slab integrated floor slab according to claim 2, characterized in that: The transverse steel bars (41) and the embedded steel bars together constitute the T-plate extended steel bars (4); after the adjacent T-plate units (1) are connected as a whole, the T-plate extended steel bars (4) of the adjacent T-plate units (1) are connected by the T-plate additional transverse steel bars (5). The T-plate additional transverse steel bars (5) are provided in two layers. The two layers of T-plate additional transverse steel bars (5) correspond to the transverse steel bars (41) and the embedded steel bars respectively, connecting the corresponding transverse steel bars (41) and the embedded steel bars of the adjacent T-plate units (1).

4. The prefabricated beam-slab integrated floor slab according to claim 3, characterized in that: The groove (2) is also provided with T-plate additional longitudinal reinforcement (6) arranged perpendicular to the T-plate additional transverse reinforcement (5). The T-plate additional longitudinal reinforcement (6) is arranged horizontally and has two layers. The T-plate additional longitudinal reinforcement (6) on both sides is connected with the two layers of T-plate additional transverse reinforcement (5) to form a steel mesh structure.

5. The prefabricated beam-slab integrated floor slab according to claim 1, characterized in that: The transverse beams include a first transverse beam (7) and a second transverse beam (13). Adjacent rib beams (14) are connected by multiple first transverse beams (7). Multiple second transverse beams (13) are fixed on the outer side of the outermost rib beam (14) of the T-plate unit (1).

6. The prefabricated beam-slab integrated floor slab according to claim 5, characterized in that: Both the first transverse diaphragm (7) and the second transverse diaphragm (13) are provided with vertically arranged longitudinal outward reinforcing bars (9) at their bottoms. One end of the longitudinal outward reinforcing bar (9) is embedded in the first transverse diaphragm (7) and the second transverse diaphragm (13), and the other end extends vertically out of its bottom. The side of the second transverse diaphragm (13) is provided with transverse outward reinforcing bars (8) arranged parallel to the transverse reinforcing bars (41). One end of the transverse outward reinforcing bars (8) is embedded in the second transverse diaphragm (13), and the other end extends horizontally out of the second transverse diaphragm (13). After the T-plate units (1) are connected as a whole, there is a gap between the second transverse diaphragm beams (13) corresponding to adjacent T-plate units (1). The transverse outward reinforcing bars (8) of the transverse diaphragm beams are set in the gap. The transverse outward reinforcing bars (8) of the corresponding transverse diaphragm beams in the gap are connected by the additional transverse reinforcing bars (10) of the transverse diaphragm beams. The additional transverse reinforcing bars (10) of the transverse diaphragm beams in the same vertical direction are connected by the vertically arranged additional longitudinal reinforcing bars of the transverse diaphragm beams. The two ends of the additional longitudinal reinforcing bars are provided with hooks and connected with the additional transverse reinforcing bars (10) of the transverse diaphragm beams to form a steel mesh structure.

7. The prefabricated beam-slab integrated floor slab according to claim 6, characterized in that: Multiple first transverse beams (7) are arranged longitudinally along the T-plate unit (1) in the span of the rib beam (14), and multiple second transverse beams (13) are arranged longitudinally along the T-plate unit (1) at the ends of the rib beam (14). The distance between adjacent first transverse beams (7) is 6~10m, and the distance between adjacent second transverse beams (13) is 6~10m.

8. The prefabricated beam-slab integrated floor slab according to claim 7, characterized in that: The length of the transverse outward extension bar (8) of the transverse diaphragm extending beyond the second transverse diaphragm (13) is 8d~10d, where d is the diameter of the transverse outward extension bar (8) of the transverse diaphragm.

9. The prefabricated beam-slab integrated floor slab according to claim 1, characterized in that: The width of the T-plate end beam (11) and the sliding support beam (12) are the same. The sliding support beam (12) has a pre-reserved extension bar corresponding to the longitudinal extension bar (9) of the transverse diaphragm at the connection with the T-plate unit. The longitudinal extension bar (9) of the transverse diaphragm on the T-plate end beam (11) and the extension bar on the sliding support beam (12) are staggered. After the sliding construction is completed, the joint between the T-plate end beam (11) and the sliding support beam (12) is cast into an integral load-bearing frame beam by UHPC (15).

10. A construction method for a prefabricated beam-slab integrated floor slab according to any one of claims 1 to 9, characterized in that: Specifically, the steps include the following: S1, T-plate units are manufactured according to actual engineering requirements; S2, transport the prefabricated T-slab units to the construction site, and select the sliding equipment according to the sliding distance and weight. The sliding equipment includes hydraulic crawlers and steel rail slides; S3, erect a temporary support platform, and plan the sliding route on the sliding support beam at the top of the support platform. Fix the rail slide to the sliding support beam with rail pressure plates. The spacing between the rail pressure plates shall not exceed 800mm. S4. Hoist the prefabricated T-plate unit onto the rail slide. After the T-plate unit is in place, install the hydraulic crawler. S5, start the hydraulic crawler to slide the T-plate unit along the rail slide to the set position. During the sliding process, monitor the sliding speed, sliding direction and sliding distance to ensure smooth sliding. S6. After the T-plate unit is slid into place, it is precisely positioned to ensure that it matches the design position. S7. Repeat steps S4, S5, and S6. After all T-slab units are installed in place, connect adjacent T-slab units with the outward reinforcing bars, and pour UHPC into the connection groove formed by the groove splicing and the gap formed between the adjacent transverse beams to form an integral load-bearing T-slab floor slab, and then cure it. S8, retain the rail slideway, use additional steel bars to connect the longitudinal outward reinforcing bars of the transverse beam on the T-slab end beam to the outward reinforcing bars on the sliding support beam, and cast UHPC on site in one go to form an integral load-bearing side beam of the T-slab end beam, the sliding support beam and the rail slideway, and cure it, and finally remove the support platform.

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