Composite beam-and-slab structure having composite slabs and composite beam-and-slab system

Abstract

The present application relates to the field of building beams and slabs, and discloses a composite beam-and-slab structure having composite slabs and a composite beam-and-slab system. Said composite beam-and-slab structure comprises a support member, a prefabricated slab assembly, and a post-pouring layer. The support member comprises an upper wing, a web, and a lower wing which are fixedly arranged, a groove having an upward opening is formed in the upper wing, and a lower connecting plate is arranged at the upper end of the upper wing in a lap joint manner. According to the present application, the post-pouring layer fills and covers the space between an upper connecting plate and the lower connecting plate and the groove inner cavity at the upper wing, so that the support member, the prefabricated slab assembly and the post-pouring layer can jointly form an integrally connected component, and the lower connecting plate is in lap joint with one side of the upper wing and extends towards the upper end of the groove, so that after the post-pouring layer is cured, the lower connecting plate in contact and lap joint with the upper wing is better limited, thereby increasing connecting strength. The present application has high connection strength and high construction efficiency, the reliability of the whole composite beam-and-slab system can be improved, and the present application has the advantage of high degree of industrialization.

Description

Composite beam-slab structure and composite beam-slab system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on February 20, 2024, with application number 202410188870.X and invention name “A composite beam-slab structure and composite beam-slab system of composite plates”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of building beams and slabs, and in particular to a composite beam and slab structure of a composite slab and a composite beam and slab system. Background Art

[0004] Traditional composite beam-slab systems comprise steel beams, precast panels, and post-cast layers. The steel beams typically employ single I-beam or box-shaped cross-sections. The precast panels are lapped onto the upper flanges of the beams, and the upper and side surfaces are covered and connected by post-cast layers, ensuring structural integrity. Shear connectors enhance the shear strength of the components. This composite structure combines the tensile properties of steel with the compressive properties of concrete, maximizing the performance of the materials.

[0005] However, its manufacturing process is usually implemented in the actual area, so there are a lot of on-site wet operations, which prolongs the construction period; the connection strength between the steel and concrete is insufficient, which reduces the reliability of the overall composite beam-slab system.

[0006] Summary of the Invention

[0007] The technical problem to be solved, or at least partially solved, by this application is that, during practical implementation, extensive on-site wet work is often involved, prolonging the construction period; and the connection strength between steel and concrete is insufficient, reducing the reliability of the overall composite beam-slab system. This application proposes a composite beam-slab system with a high degree of industrialization, improved construction efficiency, and significantly enhanced component integrity.

[0008] The present application provides a composite beam-slab structure comprising:

[0009] The bracket comprises a fixed upper wing, a web and a lower wing; the upper wing and the lower wing are respectively arranged on both sides of the web along the height direction thereof; the upper wing is provided with a groove opening upward;

[0010] The prefabricated panel assembly includes a plurality of upper connecting panels and a plurality of lower connecting panels arranged in the same layer; the upper connecting panels and the lower connecting panels are spaced apart in the height direction, the lower connecting panels are overlapped and arranged at the upper end of the upper wing, and at least one of the lower connecting panels overlaps one side of the upper wing and extends toward the upper end of the groove;

[0011] and a post-cast layer suitable for being cast in the spacing space between the upper connecting plate and the lower connecting plate and in the groove, so as to fixedly connect the prefabricated panel assembly and the bracket member after the post-cast layer is solidified.

[0012] Optionally, upper lap joints are provided between the upper connecting plates arranged on the same layer, and the post-cast layer is suitable for filling the upper lap joints; and / or

[0013] Lower lap joints are provided between the lower connection plates arranged on the same layer, and the post-cast layer is suitable for filling the lower lap joints.

[0014] Optionally, the upper lap joint is provided with two upper connecting plates spaced apart in the width direction, the two upper connecting plates are connected by a plurality of upper lap steel bars, the plurality of upper lap steel bars are spaced apart in the horizontal direction in the upper lap joint, and at least one end of the upper lap steel bar extends into the upper connecting plate and is fixed therein;

[0015] There are two lower connecting plates overlapped on the upper wing along the width direction, and the two lower connecting plates are connected by multiple lower overlapping steel bars. The multiple lower overlapping steel bars are arranged in the lower overlapping seam at intervals along the horizontal direction, and at least one end of the lower overlapping steel bar extends to the corresponding lower connecting plate and is fixed.

[0016] Optionally, the cross section of the post-cast layer is set to a cross structure.

[0017] Optionally, the upper wing is fixedly connected with a plurality of shear anchor bars arranged at intervals, the shear anchor bars extend and distribute along the height direction, one end of the shear anchor bar is connected to the groove, the other end of the shear anchor bar is fixedly connected to the upper lap steel bar, and the middle section of the shear anchor bar is fixedly connected to the lower lap steel bar.

[0018] Optionally, the cross-sectional width of the lower wing is greater than the cross-sectional width of the upper wing.

[0019] Optionally, the cross-section of the upper wing is set to a C-shaped structure or a U-shaped structure, and the cross-section of the lower wing is set to an I-shaped structure.

[0020] Optionally, it further comprises a plurality of steel bar trusses arranged at intervals, wherein the steel bar trusses are arranged in the interval space between the upper connecting plate and the lower connecting plate.

[0021] Optionally, the steel truss is configured as a three-sided steel truss, the steel truss is staggered and has a tip and a bottom, the tip is spaced apart from any prefabricated panel, and the bottom is fixedly connected to the upper connecting plate or the lower connecting plate adjacent thereto.

[0022] A composite beam-slab system comprises the above-mentioned composite beam-slab structure.

[0023] The technical solution provided by this application has the following advantages:

[0024] 1. The composite beam-slab structure of the composite slab provided in the present application includes a support member, a precast slab assembly and a post-cast layer. The support member includes a fixed upper wing, a web and a lower wing. The upper wing and the lower wing are respectively arranged on both sides of the web along the first direction thereof; a groove with an opening facing upward is provided on the upper wing. The precast slab assembly includes a number of upper connecting plates arranged on the same layer and a number of lower connecting plates arranged on the same layer; the upper connecting plates and the lower connecting plates are spaced apart in the first direction, the lower connecting plates are overlapped and arranged at the upper end of the upper wing, and at least one lower connecting plate overlaps one side of the upper wing and extends toward the upper end of the groove. The post-cast layer is suitable for being cast in the spacing space between the upper connecting plate and the lower connecting plate and in the groove to fixedly connect the precast slab assembly and the support member after the post-cast layer is solidified.

[0025] The beam-slab structure of this structure is filled with a post-cast layer to cover the space between the upper connecting plate and the lower connecting plate and the inner cavity of the groove at the upper wing, so that the bracket, prefabricated plate assembly and the post-cast layer can together form an integrally connected component, wherein the lower connecting plate is overlapped and arranged at the upper end of the upper wing, and at least one lower connecting plate is overlapped on one side of the upper wing and extends toward the upper end of the groove, so that after the post-cast layer is solidified, it can better limit the contact with the lower connecting plate overlapped at the upper wing. This arrangement can increase the connection contact area between the post-cast layer and the lower connecting plate, so that the lower connecting plate and the post-cast layer distributed in the groove form a connection limit, thereby improving the connection strength; the main structure of the beam and slab can be manufactured in a prefabricated factory, which is conducive to shortening the construction period and speeding up the subsequent construction efficiency of the actual site. Its connection strength is high, which effectively improves the reliability of the overall composite beam-slab system and has the advantage of a high degree of industrialization.

[0026] 2. In the composite beam-slab structure provided in this application, shear anchor bars are welded to the upper wings of the bracket members. This welding of the shear anchor bars can be prefabricated in the factory, improving the assembly efficiency of the component. The shear anchor bars are covered by a post-cast layer, significantly improving the shear strength of the component. Furthermore, the shear anchor bars are welded to some of the overlapping steel bars, enhancing the stability of the structure.

[0027] 3. The composite beam-slab structure of the composite slab provided in this application has a steel truss that can be divided into two parts. One part is the bottom end of the steel truss, which is arranged in the precast slab assembly and located above the lower lap steel bar. It is prefabricated together with the precast slab assembly in the factory; the other part is the tip of the steel truss, which extends out of the precast slab assembly at the corresponding lap joint. The tip of the steel truss of the upper connecting plate is set downward; the tip of the steel truss of the lower connecting plate is set upward, and the steel trusses of the upper and lower connecting plates are staggered and connected by a post-cast layer, which greatly improves the overall stability and overall load-bearing performance of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] FIG1 is a schematic structural diagram of a composite beam-slab structure of a laminated plate provided in this application;

[0030] FIG2 is a schematic structural diagram of the front view of the composite beam-slab structure of the composite slab provided in this application;

[0031] FIG3 is a schematic diagram of a top view of a composite beam-slab structure of a laminated slab provided in the present application;

[0032] FIG4 is a schematic structural diagram of a side view of a composite beam-slab structure of a composite slab provided in the present application;

[0033] FIG5 is a partial schematic diagram of a composite beam-slab structure of a laminated plate provided in this application;

[0034] Description of reference numerals:

[0035] 1- bracket; 11- upper wing; 111- groove; 12- belly bar; 13- lower wing;

[0036] 2- precast panel assembly; 21- upper connecting plate; 22- lower connecting plate; 23- upper lap joint; 24- lower lap joint; 25- upper lap reinforcement; 26- lower lap reinforcement;

[0037] 3- shear anchor bar; 4- steel truss; 41- tip; 42- bottom. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0042] Example 1

[0043] This embodiment provides a composite beam-slab structure of a composite slab, as shown in Figures 1 to 5, which includes a bracket member 1, a prefabricated slab assembly 2 and a post-cast layer (not shown in the figures).

[0044] 2 , the bracket 1 comprises a fixed upper wing 11, a web 12 and a lower wing 13. The upper wing 11 and the lower wing 13 are respectively arranged on both sides of the web 12 along a first direction thereof; the upper wing 11 is provided with a groove 111 opening upward.

[0045] Referring to Figures 1 and 2, the precast panel assembly 2 includes a plurality of upper connecting plates 21 and a plurality of lower connecting plates 22 arranged in the same layer. The upper connecting plates 21 and the lower connecting plates 22 are spaced apart in a first direction, and the lower connecting plates 22 are overlapped at the upper end of the upper wing 11. At least one lower connecting plate 22 overlaps one side of the upper wing 11 and extends toward the upper end of the groove 111. Specifically, one lower connecting plate 22 in the same layer overlaps one side of the upper wing 11 and extends toward the upper end of the groove 111. In some embodiments, the lower connecting plates 22 arranged in groups on the same layer overlap one side of the upper wing 11 and extend toward the upper end of the groove 111.

[0046] The post-cast layer is suitably poured into the space between the upper and lower connecting plates 21, 22, and into the groove 111, thereby securely connecting the precast panel assembly 2 and the bracket member 1 after the post-cast layer solidifies. By filling and covering the groove 111 of the upper wing 11 with the post-cast layer, the compressive performance of the composite beam-slab structural system is improved, thereby enhancing the overall strength of the component. The post-cast layer fills and covers the lap joint between the upper and lower connecting plates 21, 22, and the groove 111 at the edge of the upper wing 11 of the special-shaped steel beam, thereby connecting the precast panels and the post-cast layer to the special-shaped steel beam, forming a single, integrated component.

[0047] In this embodiment, referring to FIG. 1 , the upper connecting plates 21 are overlapped on the lower connecting plates 22 in an alternating manner, and the lower connecting plates 22 are overlapped on both sides of the upper wing 11 of the bracket member 1 .

[0048] In this embodiment, referring to FIG1 , upper lap joints 23 are provided between upper connecting plates 21 arranged on the same layer, and the post-cast layer is suitable for filling the upper lap joints 23. In some embodiments, the upper lap joints 23 are provided with two upper connecting plates 21 spaced apart along the second direction. The two upper connecting plates 21 are connected by a plurality of upper lap steel bars 25. The plurality of upper lap steel bars 25 are spaced apart horizontally within the upper lap joints 23, and at least one end of the upper lap steel bars 25 extends into the upper connecting plates 21 for fixed installation. The extension direction of the upper lap joints 23 is arranged parallel to the extension direction of the bracket member 1.

[0049] In this embodiment, referring to Figure 1 , lower lap joints 24 are provided between lower connecting plates 22 arranged in the same layer, and the post-cast layer is suitable for filling lower lap joints 24. In some embodiments, two lower connecting plates 22 are provided, overlapping the upper wing 11 along the second direction. The two lower connecting plates 22 are connected by a plurality of lower lap steel bars 26. The plurality of lower lap steel bars 26 are arranged in a horizontally spaced relationship within the lower lap joints 24, and at least one end of the lower lap steel bars 26 extends into the corresponding lower connecting plate 22 for fixed installation. The extension direction of the lower lap joints 24 is arranged parallel to the extension direction of the bracket member 1.

[0050] Wherein, at the front end and the rear end of the bracket member 1 along the third direction, the areas of the lower connecting plate 22 that are not vertically covered by the upper connecting plate 21 can be covered and connected by a post-cast layer.

[0051] The composite beam-slab structure of the composite slab provided in this embodiment, as shown in Figures 1 and 2, has an upper connecting plate 21 and a lower connecting plate 22 that are staggered and overlapped along the height projection direction. The front and end areas of the lower connecting plate 22 can be covered and connected by a post-cast layer; in the middle, the lower connecting plate 22 is covered by the upper connecting plate 21. That is, at the front and end of the floor slab, the floor slab structure consists of a post-cast layer and a lower connecting plate 22; in the middle, the structure consists of an upper connecting plate 21, a post-cast layer, and a lower connecting plate 22. The use of the precast panel assembly 2 can greatly improve the assembly rate of the overall component and shorten the construction period. At the same time, the staggered overlap form is conducive to exerting the various performance properties of the structure and improving the integrity of the component.

[0052] In one embodiment, the width of the upper lap seam 23 is smaller than the width of the lower lap seam 24 .

[0053] The composite beam-slab structure provided in this embodiment utilizes upper and lower connecting plates 21, 22, reducing the need for formwork. Once the precast panel assembly 2 is overlapped and positioned on the support member 1, it can serve as the formwork for the subsequent pouring layer. Furthermore, the use of upper and lower connecting plates 21, 22 reduces on-site wet work in the composite beam-slab system, improving component assembly efficiency, construction efficiency, and industrialization. This highly assembled structure also reduces the environmental impact of construction.

[0054] Optionally, the cross section of the post-cast layer is configured as a cross structure, which is a plane defined by the first direction and the second direction shown in FIG2 .

[0055] In this embodiment, referring to Figures 1, 2, and 5, a plurality of spaced-apart shear anchor bars 3 are fixedly connected to the upper wing 11. The shear anchor bars 3 extend along a first direction. One end of each shear anchor bar 3 is connected to the groove 111, the other end of each shear anchor bar 3 is fixedly connected to the upper lap reinforcement 25, and the middle section of each shear anchor bar 3 is fixedly connected to the lower lap reinforcement 26. The shear anchor bars 3 enhance the shear resistance of the composite beam-slab structural system.

[0056] In the above description, the upper lap reinforcement 25 extends out of the upper connecting plate 21 and is tied and fixed in the upper lap joint 23, and part of the upper lap reinforcement 25 is connected to the shear anchor bar 3 by welding;

[0057] The lower lap reinforcement bars 26 extend out of the lower connecting plate 22 and are tied and fixed in the lower lap joint 24 . Part of the lower lap reinforcement bars 26 is connected to the shear anchor bars 3 by welding.

[0058] The shear anchor bars 3 extend to the upper lap reinforcement bars 25 extending from the upper connecting plate 21 and are connected to the corresponding lap reinforcement bars extending from the upper connecting plate 21 and the lower connecting plate 22 respectively.

[0059] In the composite slab beam-slab structure provided in this embodiment, the shear anchor bars 3 are welded to the upper wing 11 of the bracket member 1. The welding of the shear anchor bars 3 can be prefabricated in the factory, which can improve the assembly efficiency of the component. The connection covered by the post-cast layer can greatly improve the shear strength of the component. Furthermore, the shear anchor bars 3 are welded to some overlapping steel bars, which can improve the stability of the structure.

[0060] In this embodiment, the bracket member 1 is configured as a special-shaped steel beam. The special-shaped steel beam can be an independent steel member welded together, or an integrally formed steel beam, which can be selected according to actual needs.

[0061] The cross-sectional width of the lower wing 13 is greater than the cross-sectional width of the upper wing 11. This arrangement is beneficial to improving the tensile performance of the bracket member 1.

[0062] In some embodiments, the edge of the upper wing 11 is configured as a channel steel cross section; specifically, the cross section of the upper wing 11 is configured as a U-shaped structure or a U-shaped structure.

[0063] In some embodiments, the lower wing 13 is configured as an I-shaped steel cross-section; specifically, the cross-section of the lower wing 13 is configured as an I-shaped structure.

[0064] The bracket member 1 and the prefabricated panel assembly 2 can be specifically configured with an actual design structure according to the size of the prefabricated construction.

[0065] In this embodiment, in order to enhance the connection strength of the beam-slab structure, the beam-slab structure further includes a plurality of steel trusses 4 arranged at intervals. The steel trusses 4 are arranged in the space between the upper connecting plate 21 and the lower connecting plate 22 .

[0066] Optionally, referring to FIG4 , the steel truss 4 is configured as a three-sided steel truss 4 , the steel truss 4 is staggered and spaced apart, and the steel truss 4 has a tip 41 and a bottom 42 , the tip 41 is spaced apart from any prefabricated panel, and the bottom 42 is fixedly connected to the upper connecting plate 21 or the lower connecting plate 22 adjacent thereto.

[0067] In the composite beam-slab structure of the composite slab provided in this embodiment, the steel truss 4 can be divided into two parts. One part is the bottom end 42 of the steel truss 4, which is arranged in the precast slab assembly 2 and is located above the lower lap steel bar 26. It is prefabricated together with the precast slab assembly 2 in the factory; the other part is the tip 41 of the steel truss 4, which extends out of the precast slab assembly 2 at the corresponding lap joint. The tip 41 of the steel truss 4 of the upper connecting plate 21 is set downward; the tip 41 of the steel truss 4 of the lower connecting plate 22 is set upward, and the steel trusses 4 of the upper connecting plate 21 and the lower connecting plate 22 are staggered, and the upper connecting plate 21 and the lower connecting plate 22 are connected by a post-cast layer, which greatly improves the overall stability and overall load-bearing performance of the component.

[0068] The composite beam-slab structure of the composite slab provided in this embodiment is filled with a post-cast layer to cover the space between the upper connecting plate 21 and the lower connecting plate 22 and the inner cavity of the groove 111 at the upper wing 11, so that the bracket 1, the precast slab assembly 2 and the post-cast layer can together form an integrally connected component, wherein the lower connecting plate 22 is overlapped and arranged at the upper end of the upper wing 11, and at least one lower connecting plate 22 is overlapped on one side of the upper wing 11 and extends toward the upper end of the groove 111, so that after the post-cast layer is solidified, it can better limit the contact with the lower connecting plate 22 overlapped at the upper wing 11. This arrangement can increase the connection contact area between the post-cast layer and the lower connecting plate 22, so that the lower connecting plate 22 and the post-cast layer distributed in the groove 111 form a connection limit, thereby improving the connection strength; the main structure of the beam and slab can be manufactured in a prefabricated factory, which is conducive to shortening the construction period and accelerating the construction efficiency of the subsequent actual site. Its connection strength is high, which effectively improves the reliability of the overall composite beam-slab system and has the advantage of a high degree of industrialization.

[0069] The composite beam-slab structure of the composite slab provided in this embodiment is connected into a whole by covering and filling the precast slabs, the bracket members 1 and other components through the concrete covering and filling after the post-cast layer is cured, which effectively solves the problem of poor integrity of the assembled structure.

[0070] In the above description, the first direction is set as the height direction of the bracket member 1 , the second direction is set as the width direction of the bracket member 1 , and the third direction is set as the length direction of the bracket member 1 .

[0071] Example 2

[0072] This embodiment provides a composite beam-slab system. Referring to FIG1 , the composite beam-slab system includes the composite beam-slab structure of the composite plate of embodiment 1. Thus, it has the advantages of high connection strength of the composite beam-slab structure of the composite plate, good reliability of the composite beam-slab system, and high degree of industrialization.

[0073] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of this application.

Claims

1. A composite beam-slab structure comprising: include: The bracket member (1) comprises a fixed upper wing (11), a web (12) and a lower wing (13); the upper wing (11) and the lower wing (13) are respectively arranged on both sides of the web (12) along the height direction thereof; the upper wing (11) is provided with a groove (111) with an opening facing upward; A prefabricated panel assembly (2) comprises a plurality of upper connecting panels (21) and a plurality of lower connecting panels (22) arranged in the same layer; the upper connecting panels (21) and the lower connecting panels (22) are spaced apart in a height direction, the lower connecting panels (22) are overlapped and arranged on the upper end of the upper wing (11), and at least one of the lower connecting panels (22) overlaps one side of the upper wing (11) and extends toward the upper end of the groove (111); and a post-cast layer suitable for being cast in the spacing space between the upper connecting plate (21) and the lower connecting plate (22) and in the groove (111) so as to fixedly connect the prefabricated panel assembly (2) and the bracket member (1) after the post-cast layer is solidified.

2. The composite beam-slab structure of claim 1, wherein: An upper lap joint (23) is provided between the upper connecting plates (21) arranged on the same layer, and the post-cast layer is suitable for filling the upper lap joint (23); and / or A lower lap joint (24) is provided between the lower connection plates (22) arranged on the same layer, and the post-cast layer is suitable for filling the lower lap joint (24).

3. The composite beam-slab structure of claim 2, wherein: The upper lap joint (23) is provided with two upper connecting plates (21) spaced apart in the width direction, and the two upper connecting plates (21) are connected by a plurality of upper lap steel bars (25), and the plurality of upper lap steel bars (25) are spaced apart in the horizontal direction in the upper lap joint (23), and at least one end of the upper lap steel bar (25) extends into the upper connecting plate (21) and is fixed therein; Two lower connecting plates (22) are provided which are overlapped on the upper wing (11) along the width direction. The two lower connecting plates (22) are connected by a plurality of lower overlapping steel bars (26). The plurality of lower overlapping steel bars (26) are arranged in the lower overlapping seam (24) at intervals along the horizontal direction. At least one end of the lower overlapping steel bar (26) extends to the corresponding lower connecting plate (22) and is fixed therein.

4. The composite beam-slab structure of claim 3, wherein: The cross section of the post-cast layer is arranged as a cross structure.

5. The composite beam-slab structure of claim 3, wherein: The upper wing (11) is fixedly connected with a plurality of spaced-apart shear anchoring bars (3), the shear anchoring bars (3) extending and distributed along the height direction, one end of the shear anchoring bar (3) connected to the groove (111), the other end of the shear anchoring bar (3) fixedly connected to the upper lap steel bar (25), and the middle section of the shear anchoring bar (3) fixedly connected to the lower lap steel bar (26).

6. The composite beam-slab structure according to any one of claims 1 to 5, characterized in that: The cross-sectional width of the lower wing (13) is greater than the cross-sectional width of the upper wing (11).

7. The composite beam-slab structure of claim 6, wherein: The cross section of the upper wing (11) is configured as a U-shaped structure or a U-shaped structure, and the cross section of the lower wing (13) is configured as an I-shaped structure.

8. The composite beam-slab structure of claim 6, wherein: It also includes a plurality of steel bar trusses (4) arranged at intervals, wherein the steel bar trusses (4) are arranged in the interval space between the upper connecting plate (21) and the lower connecting plate (22).

9. The composite beam-slab structure of claim 8, characterized in that: The steel truss (4) is configured as a three-sided steel truss (4), the steel truss (4) is arranged at staggered intervals, the steel truss (4) has a tip (41) and a bottom (42), the tip (41) is arranged at intervals from any prefabricated plate, and the bottom (42) is fixedly connected to the adjacent upper connecting plate (21) or the lower connecting plate (22).

10. A composite beam-slab system, characterized in that: The composite beam-slab structure comprises the composite slab structure described in any one of claims 1-9.

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