Prefabricated reinforced concrete composite slab and construction method thereof

Abstract

The application relates to a prefabricated reinforced concrete laminated slab and a construction method thereof, and belongs to the laminated slab field. The laminated slab comprises a thin plate and a laminated layer, the laminated layer is formed by pouring concrete on the thin plate, a rib is fixedly connected on the thin plate, a pressing strip is arranged on the thin plate, a reserved hole is formed in the rib, the reserved hole is used for passing through the pressing strip, the pressing strip comprises a bottom plate, a side plate and a limiting plate, the side plate and the bottom plate are fixedly connected, the bottom plate is attached to the thin plate, the bottom plate and the thin plate are slidingly connected, the limiting plate and the rib slide relative to each other, the sliding direction of the limiting plate is perpendicular to the length direction of the bottom plate, a control assembly is arranged on the thin plate, and the control assembly is used for controlling the sliding of the limiting plate. The height of the limiting plate is adjusted through the control assembly, manual movement of the limiting plate by an operator is not needed, the operation is relatively simple and manpower is saved, and the construction efficiency of the laminated slab is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laminated slab, in particular to a prefabricated reinforced concrete laminated slab and a construction method thereof. BACKGROUND

[0002] The laminated slab is a better structure form combining prefabricated and cast-in-situ concrete. The prestressed thin slab and the upper cast-in-situ concrete layer are combined into a whole and work together.

[0003] In the related art, the laminated slab includes a thin slab and a laminated layer, the laminated layer is formed by pouring concrete on the thin slab, high-strength prestressed steel bars are arranged in the thin slab, ribs are fixedly connected to the thin slab, the ribs are provided with reserved holes, a pressing strip is arranged on the thin slab, the reserved holes are for the pressing strip to pass through, the pressing strip includes a bottom plate, a side plate and a limiting plate, the side plate and the bottom plate are fixedly connected, the inner wall of the limiting plate is attached to the side plate, the ribs are provided with studs, the studs are threadedly connected to the limiting plate, the lower ends of the studs pass through the limiting plate and abut against the side plate, so that the bottom plate abuts against the thin slab. In actual operation, an operator installs the bottom plate and the side plate on the thin slab, manually adjusts the height of the limiting plate according to the diameter of the pipeline, and then screws the studs so that the lower ends of the studs pass through the limiting plate and abut against the side plate.

[0004] The above related technology has the following defects: when the operator adjusts the height of the limiting plate according to the diameter of the pipeline, the operator needs to manually move the limiting plate and rotate the stud, which is relatively complicated and consumes a lot of manpower, thereby reducing the installation efficiency of the limiting plate and the construction efficiency of the laminated slab. SUMMARY

[0005] In order to improve the problem that the operator manually moves the limiting plate and rotates the stud, which is relatively complicated and consumes a lot of manpower, the present application provides a prefabricated reinforced concrete laminated slab and a construction method thereof.

[0006] The prefabricated reinforced concrete laminated slab provided by the present application adopts the following technical scheme:

[0007] A prefabricated reinforced concrete laminated slab includes a thin slab and a laminated layer, the laminated layer is formed by pouring concrete on the thin slab, ribs are fixedly connected to the thin slab, a pressing strip is arranged on the thin slab, the ribs are provided with reserved holes, the reserved holes are for the pressing strip to pass through, the pressing strip includes a bottom plate, a side plate and a limiting plate, the side plate and the bottom plate are fixedly connected, the bottom plate and the thin slab are attached, the bottom plate and the thin slab are slidingly connected, the limiting plate and the ribs slide relative to each other, the sliding direction of the limiting plate is perpendicular to the length direction of the bottom plate, the thin slab is provided with a control assembly, and the control assembly is used to control the sliding of the limiting plate.

[0008] By adopting the technical scheme, in actual operation, the operator installs the limiting plate to the rib mountain, moves the bottom plate to the sheet, adjusts the height of the limiting plate through the control assembly, and does not need to manually move the limiting plate, so that the operation is relatively simple and saves manpower, improves the installation work efficiency of the limiting plate, and improves the construction efficiency of the laminated sheet.

[0009] Preferably, the control assembly comprises a control rod and a sliding rod, the control rod is installed on the rib, the control rod and the rib are rotationally connected, the control rod and the limiting plate are threadedly connected, the sliding rod and the sheet are slidingly connected, the sliding direction of the sliding rod is consistent with the sliding direction of the limiting plate, a sliding groove is formed in the limiting plate, and the sliding groove is embedded with the sliding rod.

[0010] By adopting the technical scheme, when the limiting plate is installed, the limiting plate is moved to embed the sliding rod in the sliding groove, the sliding rod can limit the limiting plate, the possibility of rotation of the limiting plate is reduced, the control rod is moved to be installed on the rib, one end of the control rod is screwed into the limiting plate, the operator can rotate the control rod to control the movement of the limiting plate, the height of the limiting plate is adjusted, the operator does not need to manually move the limiting plate, the operation is relatively simple and saves manpower.

[0011] Preferably, an auxiliary groove is formed in the hole wall of the reserved hole, an auxiliary block is fixedly connected to the sliding rod, and the auxiliary block slides in the auxiliary groove.

[0012] By adopting the technical scheme, when the limiting plate is installed, the limiting plate is moved to embed the sliding rod in the sliding groove, when the control rod controls the movement of the limiting plate, the movement of the limiting plate can drive the movement of the sliding rod, the movement of the sliding rod can drive the movement of the auxiliary block, the auxiliary block slides in the auxiliary groove, the auxiliary groove limits the auxiliary block, the sliding of the limiting plate is limited, and the stability of the limiting plate during sliding is improved.

[0013] Preferably, a positioning plate is fixedly connected to the bottom plate, a positioning groove is formed in the sheet, the positioning plate slides in the positioning groove, the cross section of the positioning plate is trapezoidal, and the side plate and the limiting plate are slidingly connected.

[0014] By adopting the technical scheme, when the operator installs the bottom plate, the bottom plate is moved to be attached to the sheet, the movement of the bottom plate can drive the movement of the positioning plate, the positioning plate slides in the positioning groove, the positioning groove limits the positioning plate, the bottom plate is limited, and the possibility of rotation of the bottom plate is reduced, so that the installation of the bottom plate is facilitated.

[0015] Preferably, a matching rod is arranged on the limiting plate, the matching rod and the limiting plate are slidingly connected, the sliding direction of the matching rod is consistent with the sliding direction of the limiting plate, a matching groove is formed in the side plate, and the matching groove is embedded with the matching rod.

[0016] By adopting the technical scheme, when the operator installs the limiting plate, the bottom plate is installed to drive the limiting plate to slide in the positioning groove, and the matching rod can be embedded in the matching groove, thereby improving the sealing degree of the limiting plate and the side plate, reducing the possibility of concrete flowing onto the bottom plate, and facilitating the protection of the pipeline.

[0017] Preferably, a connecting block is fixedly connected to the matching rod, and a connecting groove is formed in the limiting plate, and the connecting block slides in the connecting groove.

[0018] By adopting the technical scheme, when the operator installs the limiting plate and the bottom plate, the matching rod is embedded in the matching groove, thereby improving the sealing degree between the limiting plate and the side plate and reducing the possibility of concrete flowing onto the bottom plate, and when the limiting plate slides, the movement of the limiting plate can drive the movement of the matching rod, the movement of the matching rod can drive the movement of the connecting block, the connecting block slides in the connecting groove, the connecting groove limits the sliding of the connecting block, and the connection stability between the limiting plate and the side plate is improved.

[0019] Preferably, the pressing strip further comprises a pressing plate, both ends of the pressing plate are attached to the rib, and the pressing plate is attached to the side plate.

[0020] By adopting the technical scheme, when the limiting plate and the bottom plate are installed, the operator moves the pressing plate, both ends of the pressing plate are attached to the rib, and the pressing plate is attached to the side plate, thereby improving the sealing degree between the pressing plate and the side plate, reducing the possibility of concrete flowing onto the bottom plate, and facilitating the protection of the pipeline.

[0021] Preferably, a clamping block is fixedly connected to the rib, and a clamping groove is formed in both ends of the pressing plate, and the clamping block is embedded in the clamping groove.

[0022] By adopting the technical scheme, when the operator installs the pressing plate, the operator moves the pressing plate to embed the clamping block in the clamping groove, the clamping block limits the pressing plate, facilitating the installation of the pressing plate, and improving the installation efficiency of the pressing plate.

[0023] Preferably, a perforated steel bar is arranged on the rib, and one end of the perforated steel bar penetrates through the rib and the pressing plate.

[0024] By adopting the technical scheme, when the operator installs the pressing plate, the operator penetrates the perforated steel bar through the rib and the pressing plate, the perforated steel bar improves the stability of the rib, thereby improving the stability of the thin plate, and the perforated steel bar limits the pressing plate, reducing the possibility of the pressing plate being washed away by concrete.

[0025] The application also provides a prefabricated reinforced concrete composite slab construction method, comprising the following steps:

[0026] Moving the thin plate to the construction site, moving the limiting plate into the reserved hole, installing the control rod to the rib and one end of the control rod is screwed to the limiting plate;

[0027] Moving the bottom plate to embed the positioning plate into the positioning groove, and the matching rod is embedded into the matching groove;

[0028] Moving the pipeline between the bottom plate and the limiting plate, rotating the control rod to adjust the height of the limiting plate;

[0029] Moving the pressing plate to make both ends of the pressing plate fit the rib, and the clamping block is embedded into the clamping groove;

[0030] Moving the perforated steel bar through the rib and the pressing plate;

[0031] Pouring concrete on the thin plate to form a composite layer.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. By setting the limiting plate and the control assembly, in actual operation, the operator installs the limiting plate to the rib, moves the bottom plate to the thin plate, and adjusts the height of the limiting plate through the control assembly. The operator does not need to manually move the limiting plate, the operation is simple and saves manpower, improves the installation efficiency of the limiting plate, and improves the construction efficiency of the composite board;

[0034] 2. By setting the matching rod and the matching groove, when the operator installs the limiting plate, the operator installs the bottom plate to make the bottom plate drive the positioning plate to slide in the positioning groove, and the matching rod can be embedded in the matching groove. The sealing degree of the limiting plate and the side plate is improved, the possibility of concrete flowing into the bottom plate is reduced, and the protection of the pipeline is facilitated;

[0035] 3. By setting the perforated steel bar, when the operator installs the pressing plate, the operator passes the perforated steel bar through the rib and the pressing plate. The perforated steel bar can improve the stability of the rib, thereby improving the stability of the thin plate, and the perforated steel bar can limit the pressing plate, reducing the possibility of the pressing plate being opened by the concrete. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall structure schematic diagram for embodying the prefabricated reinforced concrete composite board in the embodiment of the present application.

[0037] Figure 2 It is the cooperation structure schematic diagram for embodying the pressing strip and the rib in the embodiment of the present application.

[0038] Figure 3 It is the cooperation structure schematic diagram for embodying the control assembly and the rib in the embodiment of the present application.

[0039] Figure 4 This is a schematic diagram illustrating the overall structure of the pressure strip in the embodiments of this application.

[0040] Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle.

[0041] Explanation of reference numerals in the attached drawings: 1. Thin plate; 11. Positioning groove; 12. High-strength prestressed steel bar; 2. Composite layer; 3. Rib; 31. Reserved hole; 311. Auxiliary groove; 32. Clip-on block; 33. Perforated steel bar; 34. Control groove; 35. Control hole; 4. Pressure strip; 41. Base plate; 411. Positioning plate; 42. Side plate; 421. Matching groove; 43. Limiting plate; 431. Sliding groove; 432. Matching rod; 4321. Connecting block; 433. Connecting groove; 44. Pressure plate; 441. Clip-on groove; 5. Control assembly; 51. Control rod; 52. Sliding rod; 521. Auxiliary block. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0043] This application discloses a precast reinforced concrete composite slab, such as... Figure 1 As shown, it includes a thin plate 1 and a composite layer 2. The thin plate 1 is prefabricated and installed on the construction site. The composite layer 2 is formed by pouring concrete on the thin plate 1 on site.

[0044] like Figure 1 and 2 As shown, high-strength prestressed steel bars 12 are inserted into the thin plate 1, and the high-strength prestressed steel bars 12 penetrate the thin plate 1 longitudinally. The high-strength prestressed steel bars can reduce the possibility of deformation of the thin plate 1. Several ribs 3 are provided at intervals along the transverse direction on the upper end surface of the thin plate 1. The ribs 3 are fixedly connected to the thin plate 1. The ribs 3 are rectangular and extend longitudinally. Several reserved holes 31 are provided at intervals along the longitudinal direction on the lower end surface of the ribs 3. The reserved holes 31 penetrate the ribs 3 transversely. The ribs 3 can also reduce the possibility of deformation of the thin plate 1 and improve the flatness of the thin plate 1.

[0045] like Figure 1 and 2As shown in the drawings, the thin plate 1 is provided with a pressing strip 4, a reserved hole 31 is provided for the pressing strip 4 to pass through, and the pressing strip 4 extends in the transverse direction. The pressing strip 4 comprises a bottom plate 41 and two side plates 42. The bottom plate 41 is placed on the thin plate 1 and the plate surface of the bottom plate 41 is attached to the thin plate 1. The two side plates 42 are arranged side by side and are located on the two longitudinal sides of the bottom plate 41, so that there is a space between the two side plates 42 for placing the pipeline. The lower end of the side plate 42 is fixedly connected to the bottom plate 41. The bottom plate 41 and the thin plate 1 are slidingly connected. The bottom plate 41 is integrally formed with a positioning plate 411. The length direction of the positioning plate 411 is consistent with the length direction of the bottom plate 41. The cross section of the positioning plate 411 is trapezoidal. The thin plate 1 is provided with a positioning groove 11. The length direction of the positioning groove 11 is consistent with the length direction of the positioning plate 411. When the bottom plate 41 is placed on the thin plate 1 and attached to the thin plate 1, the positioning plate 411 slides into the positioning groove 11. When it is necessary to install the bottom plate 41, the bottom plate 41 is attached to the thin plate 1 when the bottom plate 41 is moved. The movement of the bottom plate 41 can drive the movement of the positioning plate 411, so that the positioning plate 411 slides in the positioning groove 11. The positioning groove 11 can limit the positioning plate 411, thereby limiting the bottom plate 41, reducing the possibility of the bottom plate 41 deviating, and further reducing the possibility of the thin plate 1 bending.

[0046] As shown in the drawings, Figure 3 and 4 The pressing strip 4 further comprises a limiting plate 43. The limiting plate 43 can be installed in the reserved hole 31. The limiting plate 43 is attached to the hole wall of the reserved hole 31. The cross section of the limiting plate 43 is U-shaped. The inner wall of the U-shaped opening of the limiting plate 43 is attached to the side wall of the two side plates 42 opposite to each other. The operator can place the pipeline between the limiting plate 43 and the bottom plate 41. The limiting plate 43 slides relative to the thin plate 1. The sliding direction of the limiting plate 43 is perpendicular to the length direction of the side plate 42. The thin plate 1 is provided with a control assembly 5. The control assembly 5 comprises a control rod 51 and a sliding rod 52. The control rod 51 is provided with a bearing. The rib 3 is provided with a control groove 34. The groove bottom of the control groove 34 is provided with a control hole 35. The control rod 51 can slide through the control groove 34 and the bearing is in abutment with the groove bottom of the control groove 34, thereby realizing the rotary connection between the control rod 51 and the rib 3. One end of the control rod 51 passes through the control hole 35. The end of the control rod 51 passing through the control hole 35 is threadedly connected to the limiting plate 43. The sliding rod 52 is slidingly connected to the thin plate 1. The sliding direction of the sliding rod 52 is consistent with the sliding direction of the limiting plate 43 in reverse. The hole wall of the reserved hole 31 is provided with an auxiliary groove 311. The length direction of the auxiliary groove 311 is consistent with the sliding direction of the limiting plate 43. The sliding rod 52 is integrally formed with an auxiliary block 521. The auxiliary block 521 slides in the auxiliary groove 311. The limiting plate 43 is provided with a sliding groove 431. The sliding groove 431 is used for embedding the sliding rod 52.

[0047] When the limiting plate 43 needs to be installed, the limiting plate 43 is put into the reserved hole 31 by moving the limiting plate 43, and the limiting plate 43 is attached to the hole wall of the reserved hole 31, and the sliding rod 52 is embedded into the sliding groove 431, so that the sliding rod 52 can limit the limiting plate 43 and reduce the possibility of rotation of the limiting plate 43. When the height of the limiting plate 43 needs to be adjusted according to the diameter of the pipeline, the control rod 51 is installed on the rib 3 by moving the control rod 51, and the bearing is embedded into the control hole 35, at this time, one end of the control rod 51 passes through the control hole 35 and abuts against the limiting plate 43, the operator applies pressure and rotates the control rod 51, so that one end of the control rod 51 and the limiting plate 43 are screwed, at this time, the bearing abuts against the hole bottom of the control hole 35, and the operator can rotate the control rod 51 to adjust the height of the limiting plate 43, so as to facilitate the pipeline to be placed between the limiting plate 43 and the bottom plate 41.

[0048] As shown in Figure 4 and 5 , the limiting plate 43 is provided with a matching rod 432, the matching rod 432 and the limiting plate 43 are slidingly connected, the sliding direction of the matching rod 432 is consistent with the sliding direction of the limiting plate 43, the limiting plate 43 is provided with a connecting groove 433, the matching rod 432 is integrally formed with a connecting block 4321, and the connecting block 4321 slides in the connecting groove 433. The side plate 42 is provided with a matching groove 421 for embedding the matching rod 432. When the limiting plate 43 is installed and the bottom plate 41 needs to be installed, the bottom plate 41 is attached to the thin plate 1 by moving the bottom plate 41, the movement of the bottom plate 41 can drive the movement of the side plate 42, so that the matching rod 432 slides into the matching groove 421, when the operator rotates the control rod 51 to adjust the height of the limiting plate 43, the connecting block 4321 can slide in the connecting groove 433, the connecting groove 433 can limit the sliding of the matching rod 432, the matching rod 432 can limit the side plate 42, and the possibility of rotation of the bottom plate 41 is further reduced, and after the matching rod 432 is embedded into the matching groove 421, the sealing degree between the limiting plate 43 and the side plate 42 is improved, the concrete flowing into the bottom plate 41 is reduced, so as to protect the pipeline.

[0049] As shown in Figure 2 , 3As shown in FIGS. 4, the pressing strip 4 further comprises a pressing plate 44, the cross section of the pressing plate 44 is U-shaped, the inner wall of the opening of the pressing plate 44 is attached to the side wall of the side plate 42, and both ends of the pressing plate 44 are attached to the rib 3. The rib 3 is fixedly connected with a clamping block 32, and both ends of the pressing plate 44 are provided with a clamping groove 441 for embedding the clamping block 32. The rib 3 is provided with a perforated steel bar 33, one end of the perforated steel bar 33 penetrates through the rib 3 and the pressing plate 44, and the length direction of the perforated steel bar 33 is perpendicular to the length direction of the high-strength prestressed tendon. After the installation of the bottom plate 41 and the limiting plate 43, the operator installs the pressing plate 44, moves the pressing plate 44 to make the pressing plate 44 attached to the side plate 42, both ends of the pressing plate 44 are attached to the rib 3, and both ends of the pressing plate 44 are also attached to the limiting plate 43, the clamping block 32 is embedded in the clamping groove 441, and the clamping block 32 can limit the pressing plate 44, which is convenient for the installation of the pressing plate 44. The installation of the pressing plate 44 can improve the sealing degree of the pressing plate 44 and the side plate 42, reduce the possibility of concrete flowing onto the bottom plate 41, and thus protect the pipeline. After the installation of the pressing plate 44, the operator moves the perforated steel bar 33 for installation, one end of the perforated steel bar 33 penetrates through the rib 3 and the pressing plate 44, the perforated steel bar 33 can stabilize the rib 3, limit the pressing plate 44, reduce the possibility of the pressing plate 44 being opened by the concrete, and improve the installation stability of the pressing plate 44.

[0050] The embodiment of the present application further discloses a prefabricated reinforced concrete composite slab construction method, comprising the following steps:

[0051] Moving the thin plate 1 to the construction site;

[0052] Moving the limiting plate 43 into the reserved hole 31, and installing the control rod 51 on the rib 3 and threadedly connecting one end of the control rod 51 with the limiting plate 43;

[0053] Moving the bottom plate 41 to embed the positioning plate 411 into the positioning groove 11 and embed the cooperation rod 432 into the cooperation groove 421;

[0054] Moving the pipeline between the bottom plate 41 and the limiting plate 43, and rotating the control rod 51 to adjust the height of the limiting plate 43;

[0055] Moving the pressing plate 44 to make both ends of the pressing plate 44 attached to the rib 3, and embedding the clamping block 32 into the clamping groove 441;

[0056] Moving the perforated steel bar 33 to penetrate through the rib 3 and the pressing plate 44;

[0057] Pouring concrete on the thin plate 1 to form a composite layer 2.

[0058] The implementation principle of the prefabricated reinforced concrete composite slab and the construction method thereof is as follows:

[0059] After the thin plate 1 is moved to the construction site, the operator installs the limiting plate 43, moves the limiting plate 43 to be placed in the reserved hole 31, and the limiting plate 43 is attached to the hole wall of the reserved hole 31, the sliding rod 52 is embedded in the sliding groove 431, then the operator moves the control rod 51 to make the control rod 51 drive the bearing to be embedded in the control hole 35, and one end of the control rod 51 is abutted with the limiting plate 43, the operator applies pressure to one end of the control rod 51 to make it be screwed with the limiting plate 43, then the bearing is abutted with the hole bottom of the control hole 35, and the operator adjusts the height of the limiting plate 43 by rotating the control rod 51. When the operator installs the bottom plate 41, the operator moves the bottom plate 41 to make it be attached to the thin plate 1, and the positioning plate 411 is embedded in the positioning groove 11, so that the installation of the bottom plate 41 is realized, then the operator places the pipeline between the bottom plate 41 and the limiting plate 43, and the operator adjusts the height of the limiting plate 43 according to the diameter of the pipeline, so that the pipeline is placed conveniently. When the pipeline is installed, the operator moves the pressing plate 44 to make both ends of the pressing plate 44 be attached to the rib 3, the pressing plate 44 is attached to the side plate 42, and the clamping block 32 is embedded in the clamping groove 441, so that the installation of the pressing plate 44 is realized. When the pressing plate 44 is installed, the operator installs the perforated steel bar 33, and moves the perforated steel bar 33 to make one end of the perforated steel bar 33 pass through the rib 3 and the pressing plate 44. When the perforated steel bar 33 is installed, the operator casts the concrete on the thin plate 1 to form the superimposed layer 2.

[0060] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A precast reinforced concrete composite slab, comprising a thin slab (1) and a composite layer (2), wherein the composite layer (2) is formed by casting concrete on the thin slab (1), ribs (3) are fixedly connected to the thin slab (1), and pressure strips (4) are provided on the thin slab (1). The ribs (3) have pre-drilled holes (31) through which the pressure strips (4) pass. The pressure strips (4) include a bottom plate (41), side plates (42), and a limiting plate (43), wherein the side plates (42) and the bottom plate (41) are fixedly connected, characterized in that: The bottom plate (41) and the thin plate (1) are attached, the bottom plate (41) and the thin plate (1) are slidingly connected, the limiting plate (43) and the rib (3) are opposite sliding, the sliding direction of the limiting plate (43) is perpendicular to the length direction of the bottom plate (41), the thin plate (1) is provided with a control assembly (5), and the control assembly (5) is used for controlling the sliding of the limiting plate (43). The control assembly (5) includes a control rod (51) and a sliding rod (52), the control rod (51) is installed on the rib (3), the control rod (51) and the rib (3) are rotatably connected, the control rod (51) and the limiting plate (43) are threadedly connected, the sliding rod (52) and the thin plate (1) are slidingly connected, the sliding direction of the sliding rod (52) is consistent with the sliding direction of the limiting plate (43), the limiting plate (43) is provided with a sliding groove (431), the sliding groove (431) is embedded for the sliding rod (52), and the control rod (51) is provided with a bearing. The limiting plate (43) is provided with a matching rod (432), the matching rod (432) and the limiting plate (43) are slidingly connected, the sliding direction of the matching rod (432) is consistent with the sliding direction of the limiting plate (43), and the side plate (42) is provided with a matching groove (421) embedded for the matching rod (432).

2. A precast reinforced concrete composite slab as claimed in claim 1, wherein: The hole wall of the reserved hole (31) is provided with an auxiliary groove (311), the sliding rod (52) is fixedly connected with an auxiliary block (521), and the auxiliary block (521) slides in the auxiliary groove (311).

3. The precast reinforced concrete composite slab as claimed in claim 1, wherein: The bottom plate (41) is fixedly connected with a positioning plate (411), the thin plate (1) is provided with a positioning groove (11), the positioning plate (411) slides in the positioning groove (11), the cross section of the positioning plate (411) is trapezoidal, and the side plate (42) and the limiting plate (43) are slidingly connected.

4. The precast reinforced concrete composite slab as claimed in claim 1, wherein: The matching rod (432) is fixedly connected with a connecting block (4321), the limiting plate (43) is provided with a connecting groove (433), and the connecting block (4321) slides in the connecting groove (433).

5. A precast reinforced concrete composite slab as claimed in claim 3, wherein: The pressing strip (4) further includes a pressing plate (44), both ends of the pressing plate (44) are attached with the rib (3), and the pressing plate (44) is attached with the side plate (42).

6. A precast reinforced concrete composite slab as claimed in claim 5, wherein: The rib (3) is fixedly connected with a clamping block (32), both ends of the pressing plate (44) are provided with a clamping groove (441) embedded for the clamping block (32).

7. A precast reinforced concrete composite slab as claimed in claim 6, wherein: The rib (3) is provided with a perforated steel bar (33), one end of the perforated steel bar (33) penetrates through the rib (3) and the pressing plate (44).

8. A method of construction of a precast reinforced concrete composite slab, characterised in that: The method comprises the following steps: The thin plate (1) in claim 7 is moved to a construction site, the limiting plate (43) is moved into the reserved hole (31), and the control rod (51) is installed on the rib (3) and one end of the control rod (51) is threadedly connected with the limiting plate (43); Moving the bottom plate (41) to embed the positioning plate (411) into the positioning groove (11) and embed the matching rod (432) into the matching groove (421); Moving the pipeline between the bottom plate (41) and the limiting plate (43), and rotating the control rod (51) to adjust the height of the limiting plate (43); Moving the pressing plate (44) to make both ends of the pressing plate (44) adhere to the rib (3) and embed the clamping block (32) into the clamping groove (441); Moving the perforated steel bar (33) through the rib (3) and the pressing plate (44); Pouring concrete on the thin plate (1) to form the composite layer (2).

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