Prefabricated composite slab with pre-support positioning function and prefabricated building

Abstract

The application discloses a prefabricated laminated slab with pre-support positioning function and a prefabricated building, which comprises a pre-embedded part at a preset position of a prefabricated beam; the prefabricated laminated slab comprises a base plate, a plurality of reinforcing rib plates and a connecting truss, the connecting truss comprises a top reinforcing rib, a bottom reinforcing rib and a connecting rib, and the support positioning part comprises a pre-embedded plate and a positioning plate; when the support end of the base plate is installed on the prefabricated beam, the position of the positioning plate corresponds to the position of the pre-embedded plate. The pre-embedded part is pre-embedded at the preset position of the prefabricated beam, and the support positioning part is pre-embedded at the preset position of the prefabricated laminated slab; when the support end of the prefabricated laminated slab is installed on the prefabricated beam, the position of the positioning plate of the support positioning part corresponds to the position of the pre-embedded part and is suitable for fixed connection with the pre-embedded part, so that the prefabricated laminated slab can be supported and positioned when the prefabricated laminated slab is placed on the prefabricated beam, and the stability and accuracy of the prefabricated laminated slab installed on the prefabricated beam are improved.

Description

Technical Field

[0001] This invention relates to the field of construction, and more particularly to a prefabricated composite slab with pre-support positioning function and a prefabricated building. Background Technology

[0002] In the development of industrialized building and green building technologies, prefabricated concrete systems have been widely used in floor slab structures of residential buildings, public buildings, and industrial plants due to their advantages such as high on-site construction efficiency, less wet work, and easy quality control of components. Composite slabs, as the core load-bearing component of prefabricated floor slabs, have become a key direction for technological optimization in the industry.

[0003] However, the existing installation of composite slabs mostly relies on the on-site erection of full-span scaffolding or the post-installation of temporary supports. The support positions need to be marked and positioned on-site, which not only makes the construction process cumbersome and the installation efficiency low, but also does not meet the requirements of rapid construction of prefabricated buildings. In addition, it is easy to have support positioning deviations, which will cause the support positions to be misaligned with the stress ribs of the composite slab, resulting in unreasonable stress on the composite slab and easily causing quality problems such as excessive support settlement and cracking at the ends of the composite slab. Summary of the Invention

[0004] To address the aforementioned technical problems, the present invention aims to provide a prefabricated composite slab and prefabricated building with pre-support positioning function. Embedded parts are pre-embedded at predetermined positions in the precast beam, and support positioning parts are pre-embedded at predetermined positions in the precast composite slab. When the support end of the precast composite slab is installed on the precast beam, the position of the positioning plate of the support positioning part corresponds to the position of the embedded part and is suitable for fixed connection with the embedded part. This provides support and pre-positioning for the precast composite slab when it is placed on the precast beam, thereby improving the stability and accuracy of the precast composite slab installation on the precast beam.

[0005] To achieve the above objectives, the present invention aims to provide an assembled composite plate with pre-support positioning function, comprising:

[0006] A precast beam, wherein the precast beam has embedded parts at predetermined positions;

[0007] A precast composite slab includes a base plate, multiple reinforcing ribs, and a connecting truss. The connecting truss includes a top reinforcing rib, a bottom reinforcing rib, and a connecting rib. The multiple reinforcing ribs are installed above the base plate at a predetermined distance from it. The top reinforcing rib is embedded in the reinforcing rib, the bottom reinforcing rib is embedded in the base plate, and one end of the connecting rib is connected to the bottom reinforcing rib, while the other end is connected to the top reinforcing rib.

[0008] A support positioning component includes an embedded plate and a positioning plate, the embedded plate and the positioning plate being connected to each other. The embedded plate is embedded in the support end of the substrate, and the positioning plate extends to the outside of the support end of the substrate. When the support end of the substrate is installed on the precast beam, the position of the positioning plate corresponds to the position of the embedded plate and is adapted to be fixedly connected to the embedded plate.

[0009] In some embodiments, the positioning plate includes a vertical positioning plate, the embedded plate includes a first horizontal embedded plate, the length extension direction of the first horizontal embedded plate is consistent with the span direction of the substrate, and the extension direction of the vertical positioning plate is perpendicular to the length extension direction of the first horizontal embedded plate.

[0010] The embedded parts include vertical embedded parts, which are disposed on the first side of the precast beam;

[0011] When the supporting end of the substrate is installed on the precast beam, the vertical positioning plate is stacked on the first side of the precast beam, corresponding to the position of the vertical embedded part, and is adapted to be fixedly connected with the vertical embedded part.

[0012] In some embodiments, the positioning plate further includes a horizontal positioning plate, wherein the length extension direction of the horizontal positioning plate is consistent with the span direction of the substrate;

[0013] The embedded part also includes a horizontal embedded part, which is disposed on the top surface of the precast beam;

[0014] When the supporting end of the substrate is installed on the precast beam, the horizontal positioning plate is adapted to be stacked on the top surface of the precast beam, corresponding to the position of the horizontal embedded part, and adapted to be fixedly connected to the horizontal embedded part.

[0015] In some embodiments, the support positioning member further includes a vertical extension plate, the embedded plate includes a second horizontal embedded plate, the second horizontal embedded plate is embedded in the reinforcing rib, one end of the vertical extension plate is connected to the first horizontal embedded plate, and the other end is connected to the second horizontal embedded plate.

[0016] In some embodiments, the top surface of the precast beam has a slot, the vertical embedded part is installed on the side wall of the slot, and when the support end of the base plate is installed on the precast beam, the vertical positioning plate is adapted to be inserted into the slot, corresponding to the position of the vertical embedded part, and adapted to be fixedly connected with the vertical embedded part.

[0017] In some embodiments, the top surface of the precast beam has a support boss at a predetermined position, and the reinforcing ribs extend from both ends of the base plate along the span direction to form support reinforcing ends;

[0018] When the prefabricated composite plate is installed on the prefabricated beam, the supporting end of the base plate is adapted to be placed on the top surface of the prefabricated beam and abut against the side of the supporting boss, and the supporting reinforcing end is adapted to be placed on the top surface of the supporting boss.

[0019] In some embodiments, there are two bottom reinforcing ribs, which are spaced apart by a predetermined distance. The length extension direction of the bottom reinforcing ribs is the same as the span direction of the substrate. The length extension direction of the top reinforcing ribs is along the length extension direction of the reinforcing ribs.

[0020] The prefabricated composite plate with pre-support positioning function further includes prestressed tendons installed in the substrate, the prestressed tendons extending along the span direction of the substrate.

[0021] In some embodiments, the connecting rib includes a first connecting end, a second connecting end, and a main body segment located between the first connecting end and the second connecting end. The first connecting end is bent around to form a first through hole, the second connecting end is bent around to form a second through hole, and the main body segment is bent around to form a third through hole. The first through hole, the second through hole, and the third through hole are arranged in a triangular pattern.

[0022] The top reinforcing rib passes through the third through hole, and the two bottom reinforcing ribs pass through the first through hole and the second through hole, respectively.

[0023] In some embodiments, the prefabricated composite slab further includes two end ribs and two end trusses. The two end ribs extend along a span direction perpendicular to the substrate. The two end ribs are located at both ends of the reinforcing ribs. Each end rib is connected to the ends of a plurality of reinforcing ribs. One end of the end truss is connected to the end rib, and the other end is connected to the substrate.

[0024] According to another aspect of this application, a prefabricated building is further provided, including prefabricated composite panels with pre-support positioning function as described in any of the above claims. Attached Figure Description

[0025] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0026] Figure 1This is a three-dimensional structural diagram of a pre-supported positioning plate with pre-positioning function according to a preferred embodiment of the present invention.

[0027] Figure 2 This is a side view of a pre-supported positioning plate according to a preferred embodiment of the present invention.

[0028] Figure 3 This is a front structural diagram of a pre-supported and positioned assembled plate according to a preferred embodiment of the present invention.

[0029] Figure 4 yes Figure 3 Enlarged structural diagram at point A;

[0030] Figure 5 This is a schematic diagram of a first modified embodiment of the prefabricated composite plate with pre-support positioning function, which is a preferred embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of a second modified embodiment of the prefabricated composite plate with pre-support positioning function, which is a preferred embodiment of the present invention.

[0032] Figure 7 This is a structural schematic diagram of a third modified embodiment of the prefabricated composite plate with pre-support positioning function according to a preferred embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the fourth modified embodiment of the prefabricated composite plate with pre-support positioning function according to a preferred embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the connecting ribs of a prefabricated composite slab with pre-support positioning function according to a preferred embodiment of the present invention.

[0035] Icon labels:

[0036] 100. Prefabricated composite slab with pre-support positioning function; 10. Precast beam; 11. Embedded part; 112. Vertical embedded part; 113. Horizontal embedded part; 12. First side; 13. Insertion groove; 14. Support boss; 20. Prefabricated composite slab; 21. Base plate; 211. Support end; 22. Reinforcing rib; 221. Support reinforcing end; 23. Connecting truss; 231. Top reinforcing rib; 232. Bottom reinforcing rib; 233. Connecting rib; 2 331, First connecting end; 23310, First through hole; 2332, Second connecting end; 23320, Second through hole; 2333, Main body section; 23330, Third through hole; 24, End rib plate; 30, Support positioning component; 31, Embedded plate; 311, First horizontal embedded plate; 312, Second horizontal embedded plate; 32, Positioning plate; 321, Vertical positioning plate; 322, Horizontal positioning plate; 33, Vertical extension plate; 40, Prestressed tie rod. Detailed Implementation

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0038] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0039] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0040] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] refer to Figures 1 to 9 This application provides a prefabricated composite slab 100 with pre-support positioning function, the prefabricated composite slab 100 including a precast beam 10, a precast composite slab 20 and a support positioning component 30.

[0043] The precast beam 10 has a pre-embedded part 11 at a predetermined position. The precast composite slab 20 includes a base plate 21, a plurality of reinforcing ribs 22 and a connecting truss 23. The connecting truss 23 includes a top reinforcing rib 231, a bottom reinforcing rib 232 and a connecting rib 233. The plurality of reinforcing ribs 22 are installed above the base plate 21 at a predetermined distance from the base plate 21. The top reinforcing rib 231 is pre-embedded in the reinforcing rib 22. The bottom reinforcing rib 232 is pre-embedded in the base plate 21. One end of the connecting rib 233 is connected to the bottom reinforcing rib 232 and the other end is connected to the top reinforcing rib 231.

[0044] The support positioning component 30 includes a pre-embedded plate 31 and a positioning plate 32. The pre-embedded plate 31 and the positioning plate 32 are connected to each other. The pre-embedded plate 31 is pre-embedded in the support end 211 of the base plate 21. The positioning plate 32 extends to the outside of the support end 211 of the base plate 21. When the support end 211 of the base plate 21 is installed on the precast beam 10, the position of the positioning plate 32 corresponds to the position of the pre-embedded plate 31 and is adapted to be fixedly connected to the pre-embedded plate 31.

[0045] In this application, the embedded part 11 is pre-embedded at a preset position of the precast beam 10, and the support positioning part 30 is pre-embedded at a preset position of the precast composite slab 20. When the support end 211 of the precast composite slab 20 is installed on the precast beam 10, the position of the positioning plate 32 of the support positioning part 30 corresponds to the position of the embedded part 11 and is adapted to be fixedly connected with the embedded part 11, so as to support and pre-position the precast composite slab 20 when it is placed on the precast beam 10, thereby improving the stability and accuracy of the precast composite slab 20 when it is installed on the precast beam 10.

[0046] refer to Figure 4Furthermore, the positioning plate 32 includes a vertical positioning plate 321, and the embedded plate 31 includes a first horizontal embedded plate 311. The length extension direction of the first horizontal embedded plate 311 is consistent with the span direction of the base plate 21, and the extension direction of the vertical positioning plate 321 is perpendicular to the length extension direction of the first horizontal embedded plate 311. The embedded part 11 includes a vertical embedded part 112, which is disposed on the first side surface 12 of the precast beam 10.

[0047] When the support end 211 of the substrate 21 is installed on the precast beam 10, the vertical positioning plate 321 is stacked on the first side 12 of the precast beam 10, corresponding to the position of the vertical embedded part 112, and is adapted to be fixedly connected to the vertical embedded part 112.

[0048] Preferably, the embedded part 11 is a threaded sleeve with an internal threaded hole, or it can be described as an embedded connector. The positioning plate 32 has a mounting hole corresponding to the position of the embedded part 11. When the support end 211 of the base plate 21 is installed on the precast beam 10, the position of the positioning plate 32 corresponds to the position of the embedded part 11, and the mounting hole of the positioning plate 32 corresponds to the threaded hole inside the embedded part 11. The assembled composite plate 100 with pre-support positioning function further includes a screw, which is adapted to pass through the mounting hole of the positioning plate 32 and insert into the threaded hole of the embedded part 11 to fix the positioning plate 32 and the embedded part 11 together.

[0049] refer to Figure 5 In one modified embodiment, the positioning plate 32 further includes a horizontal positioning plate 322, the length extension direction of which is consistent with the span direction of the base plate 21. The embedded part 11 further includes a horizontal embedded part 113, which is disposed on the top surface of the precast beam 10. When the support end 211 of the base plate 21 is installed on the precast beam 10, the horizontal positioning plate 322 is adapted to be stacked on the top surface of the precast beam 10, corresponding to the position of the horizontal embedded part 113, and adapted to be fixedly connected to the horizontal embedded part 113.

[0050] In this modified embodiment, there are two positioning plates 32. When the base plate 21 is installed on the precast beam 10, the vertical positioning plate 321 is located on one side of the precast beam 10, and the horizontal positioning plate 322 is located on the top of the precast beam 10. This allows the precast composite plate 20 to be fixed on two different sides of the precast beam 10, further improving the stability of the precast composite plate 20 when it is installed on the precast beam 10.

[0051] refer to Figure 7 In a modified embodiment, the support positioning member 30 further includes a vertical extension plate 33, and the embedded plate includes a second horizontal embedded plate 312. The second horizontal embedded plate 312 is embedded in the reinforcing rib plate 22. One end of the vertical extension plate 33 is connected to the first horizontal embedded plate 311, and the other end is connected to the second horizontal embedded plate 312.

[0052] The number of vertical extension plates 33 and the number of second horizontal embedded plates 312 are both multiple, specifically corresponding to the number of multiple reinforcing ribs 22. The base plate 21 has a clearance through hole corresponding to the position of the vertical extension plate 33, and the vertical extension plate 33 extends through the clearance through hole toward the reinforcing rib 22.

[0053] Preferably, both the substrate 21 and the reinforcing rib 22 are made of cast concrete. The reinforcing rib 22 is preferably made of ultra-high performance concrete, such as UHPC, while the substrate 21 is preferably made of ordinary concrete, such as NC. For example, the ultra-high performance concrete used for the reinforcing rib 22 has a compressive strength grade ≥C100, which is much higher than the C40 ordinary concrete used for the substrate 21. Relying on the high strength characteristics of the reinforcing rib 22 material, the bending and shear bearing capacity requirements of the composite slab can be met while reducing the rib cross-sectional dimensions, thus achieving a lightweight design for the composite slab. In this embodiment, for the precast composite slab 20 with a standard size of 2.4m width and 3.6m span, the concrete thickness of the substrate 21 is 35mm, and the rib height of the reinforcing rib 22 is 20mm and the rib width is 100mm. Compared to a fully ordinary concrete composite slab with the same bearing capacity, the overall self-weight is reduced. Before casting the precast beam 10, the embedded part 11 is placed in a specific mold, and then cement is poured into the mold. After the cement has solidified, the embedded part 11 is fixed in the preset position of the precast beam 10. Similarly, before casting the precast composite slab 20, the embedded plate 31 is placed in the preset position of the mold, and then cement is poured into the mold. After the cement has solidified, the embedded plate 31 is fixed.

[0054] refer to Figure 6 In a modified embodiment, the top surface of the precast beam 10 has a insertion groove 13, and the vertical embedded part 112 is installed on the side wall of the insertion groove 13. When the support end 211 of the base plate 21 is installed on the precast beam 10, the vertical positioning plate 321 is adapted to be inserted into the insertion groove 13, corresponding to the position of the vertical embedded part 112, and adapted to be fixedly connected with the vertical embedded part 112.

[0055] In this modified embodiment, when the precast composite slab 20 is installed on the precast beam 10, the vertical positioning plate 321 can be inserted into the insertion groove 13 at the top of the precast beam 10. The precast beam 10 can limit the installation position of the vertical positioning plate 321, improving the accuracy of the installation position of the vertical positioning plate 321. On the other hand, after the vertical positioning plate 321 is installed in the insertion groove 13, the position of the vertical positioning plate 321 and the precast beam 10 is relatively fixed, which facilitates the alignment of the mounting holes on the vertical positioning plate 321 with the threaded through holes on the embedded part 11, thus facilitating the installation of the fixing screw.

[0056] refer to Figure 8 In one modified embodiment, the top surface of the precast beam 10 has a supporting boss 14 at a predetermined position, and the reinforcing ribs 22 extend from both ends of the base plate 21 along the span direction to form supporting reinforcing ends 221. When the precast composite plate 20 is installed on the precast beam 10, the supporting ends 211 of the base plate 21 are adapted to be placed on the top surface of the precast beam 10 and abut against the side of the supporting boss 14, and the supporting reinforcing ends 221 are adapted to be placed on the top surface of the supporting boss 14.

[0057] In this modified embodiment, a support boss is provided at a predetermined position on the top surface of the precast beam 10. When the precast composite plate 20 is installed on the precast beam 10, the support end 211 of the base plate 21 is placed on the top surface of the precast beam 10, and the support reinforcing end 221 of the reinforcing rib 22 is placed on the top surface of the support boss 14. The precast beam 10 can simultaneously contact the base plate 21 and the reinforcing rib 22 of the precast composite plate 20, which helps to improve the overall structural strength of the precast composite plate 20.

[0058] refer to Figure 9 The bottom reinforcing ribs 232 are two in number, and the two bottom reinforcing ribs 232 are spaced apart by a predetermined distance. The length extension direction of the bottom reinforcing ribs 232 is the same as the span direction of the base plate 21. The length extension direction of the top reinforcing ribs 231 is along the length extension direction of the reinforcing rib plate 22. The assembled composite plate 100 with pre-support positioning function further includes a prestressed tie 40 installed in the base plate, and the prestressed tie 40 extends along the span direction of the base plate 21.

[0059] It should be noted that there are two precast beams 10, which are spaced a certain distance apart. The two ends of the precast composite plate 20 are respectively installed on the two precast beams 10. The direction from one precast beam 10 to the other precast beam 10 refers to the span direction of the substrate 21.

[0060] Preferably, the prestressed tie bar 40 comprises multiple prestressed steel bars, which are arranged at equal intervals along a span direction perpendicular to the base plate 21 and generally extend along the span direction of the base plate 21, and are integrally anchored and cast into the interior of the base plate 21. Preferably, the prestressed steel bars are made of... The prestress-relaxed spiral ribs are designed to eliminate stress and have a spacing of 100 mm. By applying prestress to the substrate 21 through tensioning the prestressed steel bars, the tensile stress generated by the load during the service stage can be effectively offset, reducing the risk of cracking of the precast composite slab 20.

[0061] refer to Figure 9 In one modified embodiment, the connecting rib 233 includes a first connecting end 2331, a second connecting end 2332, and a main body segment 2333 located between the first connecting end 2331 and the second connecting end 2332. The first connecting end 2331 is bent to form a first through hole 23310, the second connecting end 2332 is bent to form a second through hole 23320, and the main body segment 2333 is bent to form a third through hole 23330. The first through hole 23310, the second through hole 23320, and the third through hole 23330 are triangularly distributed. The top reinforcing rib 231 passes through the third through hole 23330, and the two bottom reinforcing ribs 232 pass through the first through hole 23310 and the second through hole 23320, respectively.

[0062] In this modified embodiment, the connecting rib 233 is bent around to form the first through hole 23310, the second through hole 23320, and the third through hole 23330. When connecting with the top reinforcing rib 231 and the bottom reinforcing rib 232 to form the connecting truss 23, it is only necessary to pass the top reinforcing rib 231 and the bottom reinforcing rib 232 through the corresponding through holes of the connecting rib 233. This can greatly reduce the amount of welding work in the assembly process of the connecting truss 23, improve assembly efficiency, and at the same time maintain the integrity of the structure of the top reinforcing rib 231, the bottom reinforcing rib 232, and the connecting rib 233 to the greatest extent, thereby improving the structural strength.

[0063] In some modified embodiments, the prefabricated composite slab 20 further includes two end ribs 24 and two end trusses (not shown in the figure). The two end ribs 24 extend along a span direction perpendicular to the base plate 21, and are located at both ends of the reinforcing ribs 22. Each end rib 24 is connected to the ends of the plurality of reinforcing ribs 22. One end of the end truss is connected to the end rib 24, and the other end is connected to the base plate 21. The length extension directions of the two end ribs 24 are staggered with the length extension directions of the plurality of reinforcing ribs 22, which enables the plurality of reinforcing ribs 22 to be connected as a whole, improving the stability of the structure of the plurality of reinforcing ribs 22. On the other hand, the length extension direction of the end ribs 24 is the same as the length extension direction of the positioning plate 32, which can strengthen the structural strength of the base plate 21 and one end of the support positioning member 30.

[0064] In this application, the base plate 21 and the reinforcing rib 22 are connected to each other as a whole through the tie action of the connecting truss 23, which can avoid layered stress and improve the overall shear resistance of the precast composite slab 20. In this embodiment, all the steel bars of the connecting truss 23 are HRB400 grade steel bars, the diameter of the connecting bar is 6mm, and the diameter of the top reinforcing bar 231 and the bottom reinforcing bar 232 is 8mm.

[0065] According to another aspect of this application, a prefabricated building is further provided, including the prefabricated composite slab 100 with pre-support positioning function as described in any of the preceding claims.

[0066] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A prefabricated composite slab with pre-support positioning function, characterized in that, include: A precast beam, wherein the precast beam has embedded parts at predetermined positions; A precast composite slab includes a base plate, multiple reinforcing ribs, and a connecting truss. The connecting truss includes a top reinforcing rib, a bottom reinforcing rib, and a connecting rib. The multiple reinforcing ribs are installed above the base plate at a predetermined distance from it. The top reinforcing rib is embedded in the reinforcing rib, the bottom reinforcing rib is embedded in the base plate, and one end of the connecting rib is connected to the bottom reinforcing rib, while the other end is connected to the top reinforcing rib. A support positioning component includes an embedded plate and a positioning plate, the embedded plate and the positioning plate being connected to each other. The embedded plate is embedded in the support end of the substrate, and the positioning plate extends to the outside of the support end of the substrate. When the support end of the substrate is installed on the precast beam, the position of the positioning plate corresponds to the position of the embedded plate and is adapted to be fixedly connected to the embedded plate.

2. The prefabricated composite slab with pre-support positioning function according to claim 1, characterized in that, The positioning plate includes a vertical positioning plate, and the embedded plate includes a first horizontal embedded plate. The length extension direction of the first horizontal embedded plate is consistent with the span direction of the substrate, and the extension direction of the vertical positioning plate is perpendicular to the length extension direction of the first horizontal embedded plate. The embedded parts include vertical embedded parts, which are disposed on the first side of the precast beam; When the supporting end of the substrate is installed on the precast beam, the vertical positioning plate is stacked on the first side of the precast beam, corresponding to the position of the vertical embedded part, and is adapted to be fixedly connected with the vertical embedded part.

3. The prefabricated composite slab with pre-support positioning function according to claim 2, characterized in that, The positioning plate also includes a horizontal positioning plate, the length extension direction of which is consistent with the span direction of the substrate; The embedded part also includes a horizontal embedded part, which is disposed on the top surface of the precast beam; When the supporting end of the substrate is installed on the precast beam, the horizontal positioning plate is adapted to be stacked on the top surface of the precast beam, corresponding to the position of the horizontal embedded part, and adapted to be fixedly connected to the horizontal embedded part.

4. The prefabricated composite slab with pre-support positioning function according to claim 2, characterized in that, The supporting positioning component also includes a vertical extension plate, and the embedded plate includes a second horizontal embedded plate. The second horizontal embedded plate is embedded in the reinforcing rib plate, and one end of the vertical extension plate is connected to the first horizontal embedded plate and the other end is connected to the second horizontal embedded plate.

5. The prefabricated composite slab with pre-support positioning function according to claim 2, characterized in that, The top surface of the precast beam has a slot for insertion. The vertical embedded part is installed on the side wall of the slot. When the supporting end of the base plate is installed on the precast beam, the vertical positioning plate is adapted to be inserted into the slot, corresponding to the position of the vertical embedded part, and adapted to be fixedly connected with the vertical embedded part.

6. The prefabricated composite slab with pre-support positioning function according to any one of claims 1 to 5, characterized in that, The top surface of the precast beam has a support boss at a predetermined position, and the reinforcing rib extends from both ends of the base plate along the span direction to form a support and reinforcing end; When the prefabricated composite plate is installed on the prefabricated beam, the supporting end of the base plate is adapted to be placed on the top surface of the prefabricated beam and abut against the side of the supporting boss, and the supporting reinforcing end is adapted to be placed on the top surface of the supporting boss.

7. The prefabricated composite slab with pre-support positioning function according to claim 6, characterized in that, The number of bottom reinforcing ribs is two, and the two bottom reinforcing ribs are set at a preset distance from each other. The length extension direction of the bottom reinforcing ribs is the same as the span direction of the substrate. The length extension direction of the top reinforcing ribs is set along the length extension direction of the reinforcing ribs. The prefabricated composite plate with pre-support positioning function further includes prestressed tendons installed in the substrate, the prestressed tendons extending along the span direction of the substrate.

8. The prefabricated composite slab with pre-support positioning function according to claim 7, characterized in that, The connecting rib includes a first connecting end, a second connecting end, and a main body segment located between the first connecting end and the second connecting end. The first connecting end is bent around to form a first through hole, the second connecting end is bent around to form a second through hole, and the main body segment is bent around to form a third through hole. The first through hole, the second through hole, and the third through hole are distributed in a triangular pattern. The top reinforcing rib passes through the third through hole, and the two bottom reinforcing ribs pass through the first through hole and the second through hole, respectively.

9. The prefabricated composite slab with pre-support positioning function according to claim 8, characterized in that, The prefabricated composite slab further includes two end ribs and two end trusses. The two end ribs extend along a span direction perpendicular to the substrate. The two end ribs are located at both ends of the reinforcing ribs. Each end rib is connected to the ends of a plurality of reinforcing ribs. One end of the end truss is connected to the end rib, and the other end is connected to the substrate.

10. A prefabricated building, characterized in that, The assembled composite plate with pre-support positioning function as described in any one of claims 1 to 9.

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