Laminated slab with reinforcing ribs

Abstract

The utility model relates to the technical field of assembly type floor slabs, in particular to a laminated slab with reinforcing ribs. The laminated slab comprises a bottom plate and at least one reinforcing rib, the reinforcing rib is arranged above the bottom plate in the length direction of the bottom plate, and the lower portion of the reinforcing rib is immersed in the bottom plate; the reinforcing rib is of a reinforced concrete structure and comprises a plurality of longitudinal reinforcing ribs, and the axis of each longitudinal reinforcing rib is parallel to the length direction of the rib. Wherein at least one reinforcing longitudinal bar is located in the bottom plate and connected with the reinforcing mesh in the bottom plate. And the large-span support-free effect can be achieved, then the workload of workers in the fabricated building construction process is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled floor slabs, in particular to a composite slab with reinforcing ribs. Background Art

[0002] In existing prefabricated buildings, composite slabs or steel truss floor decks are usually used as formwork for cast-in-place floor slabs. However, the above two types of prefabricated formwork for prefabricated buildings have the problem of small span without support and the need to set up a large number of support structures (such as scaffolding, support rods, etc.) during the construction period, which makes the workers' workload heavy and the construction period long during the construction of prefabricated buildings, and cannot give full play to the advantages of prefabricated buildings.

[0003] Therefore, it is urgent to propose a new prefabricated formwork for prefabricated buildings, which can achieve the effect of large-span support-free, thereby reducing the workload of workers in the construction process of prefabricated buildings and shortening the construction period. Utility Model Content

[0004] The utility model aims to provide a composite slab with reinforcing ribs, which can at least partially overcome the above-mentioned technical problems and meet the needs of floor casting of prefabricated buildings under unsupported conditions, thereby saving the workload required for workers to support the formwork and shortening the construction time required for the prefabricated building.

[0005] The utility model provides a composite plate with reinforcing ribs, comprising a base plate and at least one reinforcing rib, wherein the reinforcing rib is arranged above the base plate along the length direction of the base plate, and the lower part of the reinforcing rib is immersed in the base plate; the reinforcing rib is a reinforced concrete structure, the reinforcing rib comprises a plurality of reinforcing longitudinal bars, and the axis of the reinforcing longitudinal bars is arranged parallel to the length direction of the ribs; wherein at least one of the reinforcing longitudinal bars is located inside the base plate and connected to the steel mesh inside the base plate.

[0006] Furthermore, the cross-section of the reinforcing rib is rectangular, and the number of the reinforcing longitudinal ribs is four; wherein two of the reinforcing longitudinal ribs are located at the lower part of the reinforcing rib and are both located inside the bottom plate.

[0007] Furthermore, the reinforcing rib also includes a plurality of stirrups, and the plurality of stirrups are distributed in an array along the length direction of the rib; for any stirrup, the stirrup is tied and connected with each of the reinforcing longitudinal bars and each of the reinforcing longitudinal bars is constrained inside the stirrup.

[0008] Furthermore, there are two stirrups located at both ends of the reinforcing rib; the stirrups are open rectangular stirrups, the opening direction of the open rectangular stirrups is toward the bottom plate, and the two ends of the open rectangular stirrups are bent inward to form hooks; wherein the inward bending angle is 135° to 180°, and the two reinforcing longitudinal reinforcements located at the lower part of the reinforcing rib are respectively in a hook.

[0009] Furthermore, the reinforcing rib also includes web ribs, which are located on both sides of the reinforcing rib; for any side of the reinforcing rib, the upper end of the web rib is connected to the reinforcing longitudinal rib above the side, and the lower end of the web rib is connected to the reinforcing longitudinal rib below the side.

[0010] Optionally, the reinforcing rib also includes web reinforcement, which is located on both sides of the reinforcing rib; the lower part of the web reinforcement is bent to form a bending angle and a bending section; for either side of the reinforcing rib, the upper end of the web reinforcement is welded to the outer side of the reinforcing longitudinal reinforcement above the side, the bending angle of the web reinforcement is welded to the inner side of the reinforcing longitudinal reinforcement below the side, and the bending section extends into the interior of the base plate and is tied and connected to the steel mesh in the base plate.

[0011] Furthermore, the web reinforcement is a wavy web reinforcement having a continuous bending structure, and a section of the wavy web reinforcement close to the trough is folded outward to form the bending angle and the bending section.

[0012] Furthermore, longitudinal through holes and transverse through holes are formed on the reinforcing ribs.

[0013] Furthermore, the first lower edge of the cross section of the longitudinal through hole is a straight line, and the first lower edge is flush with the upper surface of the base plate; and the longitudinal through hole does not intersect with any of the reinforcing longitudinal bars, stirrups, and web bars.

[0014] Furthermore, there are multiple transverse through holes, and for any transverse through hole, the second lower edge of the cross section of the transverse through hole is a straight line, and the second lower edge is flush with the upper surface of the base plate; and the transverse through hole does not intersect with any of the reinforcing longitudinal reinforcements, stirrups, and abdominal reinforcements.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] 1. A composite slab with reinforcing ribs provided by an embodiment of the present disclosure realizes a large-span support-free composite slab through the reinforcing ribs of the reinforced concrete structure, which is beneficial to shortening the construction period when the composite slab is used for pouring the floor slab of an assembled building; by connecting the reinforcing longitudinal reinforcements located below the reinforcing ribs with the steel mesh in the bottom plate, and then pouring concrete to form a prefabricated bottom plate and reinforcing ribs, the integrity of the bottom plate and the reinforcing ribs can be improved, and the bearing capacity of the bottom plate during the pouring of the floor slab can be enhanced, thereby preventing the bottom plate from being separated from the reinforcing ribs under the gravity of the cast-in-place concrete;

[0017] 2. A composite slab with reinforcing ribs provided by an embodiment of the present disclosure can ensure that the relative positions of the reinforcing longitudinal bars are correct during the prefabrication of the composite slab with reinforcing ribs by setting stirrups; more importantly, the stirrups improve the integrity of the composite slab with reinforcing ribs; when the composite slab with reinforcing ribs is subsequently used in the pouring of floor slabs of prefabricated buildings, after the cast-in-place concrete acts on the composite slab with reinforcing ribs, the stirrups can improve the shear strength of the oblique section of the reinforcing ribs, and under the stress characteristics of the upper concrete and the reinforcing longitudinal bars being compressed and the lower concrete and the reinforcing longitudinal bars being tensile, the stirrups can prevent the concrete and the reinforcing longitudinal bars from separating;

[0018] 3. A composite plate with reinforcing ribs provided by an embodiment of the present disclosure can connect the reinforcing longitudinal bars, stirrups and web reinforcements into an integral steel cage by arranging web reinforcements welded to the reinforcing longitudinal bars. In the steel cage, the two reinforcing longitudinal bars at the lower part of the reinforcing ribs are constrained and fixed by hooks and bending angles, thereby avoiding the problem of the reinforcing longitudinal bars deviating from their original positions during the prefabrication process of the composite plate with reinforcing ribs, thereby ensuring the quality of the prefabricated composite plate with reinforcing ribs; in addition, the arrangement of web reinforcements can share part of the tensile force when the composite plate with reinforcing ribs is subjected to external loads, thereby reducing the tensile stress on the concrete of the reinforcing ribs, thereby improving the bearing capacity of the reinforcing ribs, delaying the occurrence of concrete cracking, and effectively increasing the bending resistance of the concrete section of the reinforcing ribs; when the reinforcing ribs are subjected to lateral forces or shear forces, the web reinforcements can also effectively resist the shear damage of the concrete, thereby improving The overall stability of the structure; when the assembled building structure built with the composite slab with reinforcing ribs is subsequently subjected to external impact or earthquake loads, the web reinforcement can make the assembled building have a certain deformation capacity, thereby improving the seismic performance of the assembled building; moreover, the wavy web reinforcement with a continuous bending structure can be directly made by using the relevant equipment of the steel truss floor deck, which is simple and easy to obtain; moreover, the wavy web reinforcement can greatly increase the bonding area between the web reinforcement and the concrete, thereby further improving the integrity of the reinforcing ribs; the wavy web reinforcement can also provide more lateral support, which helps to further reduce the cracking of the concrete and enhance the seismic performance of the assembled building; in the process of prefabricating and pouring the composite slab with reinforcing ribs, such wavy web reinforcement can also play a role in guiding the concrete, thereby improving the fluidity of the concrete, making it easier to fill the concrete densely;

[0019] 4. A composite plate with reinforced ribs provided by an embodiment of the present disclosure can greatly reduce the self-weight of the composite plate with reinforced ribs of the steel-concrete structure by setting longitudinal through holes and transverse through holes, which is beneficial to reducing the difficulty of hoisting when it is used in prefabricated buildings. The use of a hoist with a small lifting capacity can meet the hoisting requirements, and the light self-weight of the composite plate with reinforced ribs can also facilitate the adjustment of the detailed posture during installation, making the construction convenient and quick; in addition, the provision of the longitudinal through holes and the transverse through holes can also facilitate the installation of pre-buried pipelines in the floor slabs of prefabricated buildings; and the opening of the longitudinal through holes and the transverse through holes also retains the compression-resistant part of the upper part of the reinforcing ribs, so that the reinforcing ribs present a structural feature of being thick on the upper part and thin on the lower part, which can reduce the self-weight of the composite plate without affecting the compression resistance of the composite plate with reinforced ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0021] Figure 1 It is a schematic diagram of a three-dimensional structure of a composite plate with reinforcing ribs according to an embodiment of the utility model;

[0022] Figure 2 It is a front view of a composite board with reinforcing ribs according to an embodiment of the utility model;

[0023] Figure 3 A side view of a composite plate with reinforcing ribs according to an embodiment of the utility model;

[0024] Figure 4 It is a cross-sectional view of a composite plate with reinforcing ribs according to an embodiment of the utility model, wherein the cutting plane is parallel to the cross section of the longitudinal through hole, and the cutting plane passes through the position where the stirrup is located;

[0025] Figure 5 Based on Figure 4 A partial enlarged view of area A is shown;

[0026] Figure 6 A longitudinal cross-sectional view of a laminated plate with reinforcing ribs according to an embodiment of the utility model;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of a wave-shaped web rib with a continuous bending structure according to an embodiment of the utility model;

[0028] Figure 8 The present invention is a schematic diagram of a three-dimensional structure of a steel cage composed of reinforced longitudinal bars, stirrups and web bars according to an embodiment of the present invention.

[0029] Marks and corresponding parts names in the attached drawings:

[0030] 1-bottom plate; 2-reinforcement ribs; 21-reinforcement longitudinal reinforcement; 22-hoops; 221-hook; 23-web reinforcement; 231-bending angle; 232-bending section; 24-longitudinal through hole; 241-first lower edge; 25-transverse through hole; 251-second lower edge. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0032] In existing prefabricated buildings, composite slabs or steel truss floor decking are usually used as formwork for cast-in-place floor slabs. However, the above-mentioned two types of prefabricated formworks for prefabricated buildings both have the problem of small support-free spans, which results in that when using the above-mentioned prefabricated formworks for the pouring construction of the floor slabs of prefabricated buildings, workers are still required to build a large number of support structures to ensure that the prefabricated formworks will not be crushed by the cast-in-place concrete during the pouring process, thereby ensuring the quality of the poured floor slabs. However, manually building support structures is time-consuming and labor-intensive, and it is difficult to replace them with mechanical means, which makes the construction time long and fails to give full play to the time-saving and labor-saving advantages of prefabricated buildings. The utility model proposes a composite slab with reinforced ribs, which can realize large-span support-free operations, thereby directly eliminating the workload of manual formwork and improving the construction efficiency of prefabricated buildings.

[0033] Embodiment 1:

[0034] like Figures 1 to 3 As shown, a composite plate with reinforcing ribs provided in this embodiment includes a bottom plate 1 and at least one reinforcing rib 2, wherein the reinforcing rib 2 is arranged above the bottom plate 1 along the length direction of the bottom plate 1, and the lower part of the reinforcing rib 2 is immersed in the bottom plate 1;

[0035] The reinforcing rib 2 is a reinforced concrete structure, and the reinforcing rib 2 includes a plurality of reinforcing longitudinal ribs 21, and the axes of the reinforcing longitudinal ribs 21 are arranged parallel to the length direction of the reinforcing rib 2;

[0036] Among them, at least one of the reinforcing longitudinal bars 21 is located inside the base plate 1 and connected to the steel mesh inside the base plate 1 (the steel mesh inside the base plate 1 is not shown in the drawings).

[0037] Preferably, the cross-section of the reinforcing rib 2 is rectangular, and the number of the reinforcing longitudinal ribs 21 is four; wherein two of the reinforcing longitudinal ribs 21 are located at the lower portion of the reinforcing rib 2 and are both located inside the bottom plate 1 .

[0038] It should be understood that the above-mentioned composite board with reinforcing ribs relies on the reinforcing ribs 2 to achieve a large span without support, so the number of reinforcing ribs 2 depends on the length and width of the bottom plate 1. The longer and wider the bottom plate 1 is, the more reinforcing ribs 2 are provided. When there are multiple reinforcing ribs 2, the multiple reinforcing ribs 2 are evenly distributed along the width direction of the bottom plate 1. More preferably, the distance between two adjacent reinforcing ribs 2 is twice the distance between the reinforcing ribs 2 at the edge and the edge of the bottom plate 1.

[0039] Based on this, the present embodiment provides a composite slab with reinforcing ribs, which realizes a large span and support-free composite slab through the reinforcing ribs 2 of the reinforced concrete structure, which is beneficial to shortening the construction period when the composite slab is used for pouring floor slabs of prefabricated buildings; by connecting the reinforcing longitudinal ribs 21 located below the reinforcing ribs 2 and the steel mesh in the bottom plate 1, and then pouring concrete to form a prefabricated bottom plate 1 and reinforcing ribs 2, the integrity of the bottom plate 1 and the reinforcing ribs 2 can be improved, and the bearing capacity of the bottom plate 1 during floor pouring can be enhanced, thereby preventing the bottom plate 1 from separating from the reinforcing ribs 2 under the gravity of the cast-in-place concrete.

[0040] Embodiment 2:

[0041] like Figure 4 , Figure 5 as well as Figure 8 As shown, this embodiment is based on embodiment 1, and the difference is that this embodiment provides a composite plate with reinforcing ribs, wherein the reinforcing ribs 2 also include a plurality of stirrups 22, and the plurality of stirrups 22 are distributed in an array along the length direction of the reinforcing ribs 2; for any stirrup 22, the stirrup 22 is tied and connected with each of the reinforcing longitudinal reinforcements 21 and each of the reinforcing longitudinal reinforcements 21 is constrained inside the stirrup 22.

[0042] Preferably, please refer to Figure 8 , the number of stirrups 22 is two and they are located at both ends of the reinforcing rib 2; preferably, please refer to Figure 4 , Figure 5 The stirrup 22 is an open rectangular stirrup 22, the opening direction of the open rectangular stirrup 22 is toward the bottom plate 1, and the two ends of the open rectangular stirrup 22 are bent inward to form hooks 221; wherein the inward bending angle is 135° to 180°, and the two reinforcing longitudinal bars 21 located at the lower part of the reinforcing rib 2 are respectively in one hook 221. Figure 5 The end of the stirrup 22 shown is bent inwardly at an angle of 180°, so that the U-shaped hook 221 formed can constrain the corresponding reinforcing longitudinal bar 21 within the hook 221 .

[0043] By arranging the stirrups 22, it can be ensured that the relative positions of the various reinforcing longitudinal bars 21 are correct during the prefabrication of the composite slab with reinforcing ribs; more importantly, the stirrups 22 improve the integrity of the composite slab with reinforcing ribs; when the composite slab with reinforcing ribs is subsequently used in the pouring of floor slabs of prefabricated buildings, after the cast-in-place concrete acts on the composite slab with reinforcing ribs, the stirrups 22 can improve the shear strength of the oblique section of the reinforcing ribs 2, and under the stress characteristics of the upper concrete and the reinforcing longitudinal bars 21 being compressed and the lower concrete and the reinforcing longitudinal bars 21 being tensile, the stirrups 22 can prevent the concrete and the reinforcing longitudinal bars 21 from separating.

[0044] Embodiment 3:

[0045] like Figure 7 , Figure 8 As shown, this embodiment is based on embodiment 2, and the difference is that this embodiment provides a composite plate with reinforcing ribs, wherein the reinforcing ribs 2 further include web ribs 23, and the web ribs 23 are located on both sides of the reinforcing ribs 2;

[0046] For any side of the reinforcing rib 2, the upper end of the web rib 23 is connected to the reinforcing longitudinal rib 21 above the side, and the lower end of the web rib 23 is connected to the reinforcing longitudinal rib 21 below the side. Preferably, the web rib 23 and the longitudinal rib 21 are connected by welding.

[0047] Based on this, the composite plate with reinforcing ribs provided in this embodiment can connect the reinforcing longitudinal reinforcement 21, the stirrups 22, and the web reinforcement 23 into an integral steel cage by providing the web reinforcement 23 connected to the reinforcing longitudinal reinforcement 21, thereby avoiding the problem of the reinforcing longitudinal reinforcement 21 deviating from the original position (translation and angular deflection) during the prefabrication process of the composite plate with reinforcing ribs, thereby ensuring the quality of the prefabricated composite plate with reinforcing ribs.

[0048] Optionally, the specific arrangement form of the web rib 23 also has another implementation scheme, specifically: the present embodiment provides a composite plate with reinforcing ribs, wherein the reinforcing rib 2 further includes web ribs 23, and the web ribs 23 are located on both sides of the reinforcing rib 2; the lower part of the web rib 23 is bent to form a bending angle 231 and a bending section 232;

[0049] For either side of the reinforcing rib 2, the upper end of the web reinforcement 23 is welded to the outer side of the reinforcing longitudinal reinforcement 21 above the side, the bending angle 231 of the web reinforcement 23 is welded to the inner side of the reinforcing longitudinal reinforcement 21 below the side, and the bending section 232 extends into the interior of the base plate 1 and is tied and connected to the steel mesh inside the base plate 1.

[0050] More preferably, the web rib 23 is a wave-shaped web rib 23 with a continuous bending structure, and the section of the wave-shaped web rib 23 close to the trough is folded outward to form the bending angle 231 and the bending section 232 .

[0051] Based on this, the composite plate with reinforcing ribs provided in this embodiment is an integral steel cage (such as Figure 8), the hook 221 of the stirrup 22 and the bending angle 231 of the web rib 23 constrain and fix the two reinforcing longitudinal ribs 21 at the lower part of the reinforcing rib 2, thereby avoiding the problem of the reinforcing longitudinal ribs 21 deviating from the original position (translation and angle deflection) during the prefabrication process of the composite plate with reinforcing ribs, thereby ensuring the quality of the prefabricated composite plate with reinforcing ribs; the bending section 232 formed by the web rib 23 extends into the interior of the bottom plate 1 and is tied and connected with the steel mesh in the bottom plate 1, which can further improve the integrity between the bottom plate 1 and the reinforcing rib 2, and the load loaded on the bottom plate will also The web reinforcement 23 is transmitted to the reinforcing longitudinal reinforcement 21 along the bending section 232, thereby facilitating the improvement of the support-free span of the composite plate with the reinforcing ribs; in addition, the arrangement of the web reinforcement 23 can share a part of the tensile force when the composite plate with the reinforcing ribs is subjected to external loads, thereby reducing the tensile stress on the concrete of the reinforcing ribs 2, thereby improving the force-bearing performance of the reinforcing ribs 2, delaying the occurrence of concrete cracking, and effectively increasing the bending resistance of the concrete section of the reinforcing ribs 2; when the reinforcing ribs 2 are subjected to lateral forces or shear forces, the web reinforcement 23 can also effectively resist the concrete Shear failure, thereby improving the overall stability of the structure; when the assembled building structure built using the composite plate with reinforced ribs is subsequently subjected to external impact or earthquake loads, the web reinforcement 23 can enable the assembled building to have a certain deformation capacity, thereby improving the seismic performance of the assembled building; and the web reinforcement 23 adopts a wavy web reinforcement 23 with a continuous bending structure, and the section of the wavy web reinforcement 23 close to the trough is folded outward to form a bending angle 231 and a bending section 232. This wavy web reinforcement 23 with a continuous bending structure can directly borrow the strength of the steel truss floor deck. The relevant equipment is simple and easy to obtain; and the wavy web reinforcement 23 can greatly increase the bonding area between the web reinforcement 23 and the concrete, thereby further improving the integrity of the reinforcing rib 2; the wavy web reinforcement 23 can also provide more lateral support, which helps to further reduce the cracking of the concrete and enhance the seismic performance of the prefabricated building; in the process of prefabricating and casting the composite slab with reinforcing ribs, the wavy web reinforcement 23 can also play a role in guiding the concrete, thereby improving the fluidity of the concrete and making the concrete easier to fill and compact.

[0052] Embodiment 4:

[0053] like Figures 1 to 6 As shown, this embodiment is based on the embodiment 1, and the difference is that this embodiment provides a composite plate with reinforcing ribs, and longitudinal through holes 24 and transverse through holes 25 are further formed on the reinforcing ribs 2.

[0054] Specifically, the first lower edge 241 of the cross section of the longitudinal through hole 24 is a straight line, and the first lower edge 241 is flush with the upper surface of the bottom plate 1; and the longitudinal through hole 24 does not intersect with any of the reinforcing longitudinal ribs 21, the stirrups 22, and the web ribs 23. There are multiple transverse through holes 25, and for any transverse through hole 25, the second lower edge 251 of the cross section of the transverse through hole 25 is a straight line, and the second lower edge 251 is flush with the upper surface of the bottom plate 1; and the transverse through hole 25 does not intersect with any of the reinforcing longitudinal ribs 21, the stirrups 22, and the web ribs 23.

[0055] Based on this, the embodiment provides a composite plate with reinforced ribs, which can greatly reduce the self-weight of the composite plate with reinforced ribs of the steel-concrete structure by setting the longitudinal through holes 24 and the transverse through holes 25, which is conducive to reducing the difficulty of hoisting when it is used in prefabricated buildings. The use of a hoisting device with a small lifting capacity can meet the hoisting requirements, and the light self-weight of the composite plate with reinforced ribs can also facilitate the adjustment of the detailed posture during installation, making the construction convenient and quick. In addition, the setting of the longitudinal through holes 24 and the transverse through holes 25 also It is convenient to install embedded pipelines in the floor of the prefabricated building, and the composite board with reinforcing ribs does not need to be separately processed to set hanging holes. During assembly and installation, the transverse through holes 25 can be directly used as hanging holes; and the longitudinal through holes 24 and the transverse through holes 25 are provided, and the compression-resistant part of the upper part of the reinforcing rib 2 is retained, so that the reinforcing rib 2 presents a structural feature of being thick at the upper part (wide at the upper part) and thin at the lower part. While reducing the self-weight of the composite board, it will not affect the compression resistance of the composite board with reinforcing ribs.

[0056] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A composite plate with reinforcing ribs, characterized in that: It comprises a bottom plate (1) and at least one reinforcing rib (2), wherein the reinforcing rib (2) is arranged above the bottom plate (1) along the length direction of the bottom plate (1), and the lower part of the reinforcing rib (2) is immersed in the bottom plate (1); The reinforcing rib (2) is a reinforced concrete structure, the reinforcing rib (2) comprises a plurality of reinforcing longitudinal ribs (21), and the axes of the reinforcing longitudinal ribs (21) are arranged parallel to the length direction of the reinforcing rib (2); Wherein, at least one of the reinforcing longitudinal bars (21) is located inside the base plate (1) and is connected to the steel mesh inside the base plate (1).

2. A composite plate with reinforcing ribs according to claim 1, characterized in that: The cross section of the reinforcing rib (2) is rectangular, and the number of the reinforcing longitudinal ribs (21) is four; The two reinforcing longitudinal ribs (21) are located at the lower part of the reinforcing rib (2) and are both located inside the bottom plate (1).

3. A composite plate with reinforcing ribs according to claim 2, characterized in that: The reinforcing rib (2) further comprises a plurality of stirrups (22), and the plurality of stirrups (22) are distributed in an array along the length direction of the reinforcing rib (2); For any stirrup (22), the stirrup (22) is tied and connected to each of the reinforcing longitudinal bars (21), and each of the reinforcing longitudinal bars (21) is constrained inside the stirrup (22).

4. A composite plate with reinforcing ribs according to claim 3, characterized in that: There are two stirrups (22) located at both ends of the reinforcing rib (2); The stirrup (22) is an open rectangular stirrup (22), the opening direction of the open rectangular stirrup (22) faces the bottom plate (1), and both ends of the open rectangular stirrup (22) are bent inwards to form hooks (221); The inward bending angle is 135° to 180°, and the two reinforcing longitudinal ribs (21) located at the lower part of the reinforcing rib (2) are respectively located in a bent hook (221).

5. A composite plate with reinforcing ribs according to claim 3, characterized in that: The reinforcing rib (2) further comprises web ribs (23), wherein the web ribs (23) are located on both sides of the reinforcing rib (2); For any side of the reinforcing rib (2), the upper end of the web rib (23) is connected to the reinforcing longitudinal rib (21) above the side, and the lower end of the web rib (23) is connected to the reinforcing longitudinal rib (21) below the side.

6. A composite plate with reinforcing ribs according to claim 3, characterized in that: The reinforcing rib (2) further comprises web ribs (23), wherein the web ribs (23) are located on both sides of the reinforcing rib (2); the lower portion of the web rib (23) is bent to form a bending angle (231) and a bending section (232); For any side of the reinforcing rib (2), the upper end of the web reinforcement (23) is welded to the outer side of the reinforcing longitudinal reinforcement (21) above the side, the bending angle (231) of the web reinforcement (23) is welded to the inner side of the reinforcing longitudinal reinforcement (21) below the side, and the bending section (232) extends into the interior of the bottom plate (1) and is tied and connected to the steel mesh inside the bottom plate (1).

7. A composite plate with reinforcing ribs according to claim 6, characterized in that: The web rib (23) is a wavy web rib (23) having a continuous bending structure, and the section of the wavy web rib (23) close to the trough is folded outwards to form the bending angle (231) and the bending section (232).

8. A composite panel with reinforcing ribs according to any one of claims 5 to 7, characterized in that: A longitudinal through hole (24) and a transverse through hole (25) are also formed on the reinforcing rib (2).

9. A composite plate with reinforcing ribs according to claim 8, characterized in that: The first lower edge (241) of the cross section of the longitudinal through hole (24) is a straight line, and the first lower edge (241) is flush with the upper surface of the bottom plate (1); and the longitudinal through hole (24) does not intersect with any of the reinforcing longitudinal reinforcement (21), the stirrups (22), and the web reinforcement (23).

10. The composite plate with reinforcing ribs according to claim 8, characterized in that: There are a plurality of transverse through holes (25); for any transverse through hole (25), a second lower edge (251) of a cross section of the transverse through hole (25) is a straight line, and the second lower edge (251) is flush with an upper surface of the bottom plate (1); and the transverse through hole (25) does not intersect with any of the reinforcing longitudinal reinforcement (21), the stirrup reinforcement (22), and the web reinforcement (23).

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