Fabricated pavement prefabricated slab, prefabricated slab assembly and construction method

Abstract

The invention provides an assembly type road surface prefabricated slab, a prefabricated slab assembly and a construction method.The assembly type road surface prefabricated slab is used for being installed on a roadbed to form an assembly type road surface and comprises a prefabricated slab body, one face of the prefabricated slab body forms a supporting face, four side walls are formed around the supporting face, every two side walls are perpendicular to each other, and outer protruding parts are arranged on the two adjacent side walls; inner concave parts are arranged on the other two adjacent side walls, and the outer convex parts and the inner concave parts on the opposite side walls of the prefabricated plates are matched; the outer convex part and the inner concave part both extend along the length direction of the side wall where the outer convex part and the inner concave part are located; the first positioning piece comprises an inserting part and an elastic part arranged at one end of the inserting part in a sleeving mode, the inserting part is used for penetrating through the prefabricated slab from the supporting face to be inserted into the roadbed, and the elastic part is used for being arranged in the prefabricated slab. According to the precast slab, the problem of dislocation between the slabs can be effectively avoided, and meanwhile, one side of the precast slab can be prevented from tilting when a road surface is pressed.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of road construction, and in particular to an assembled pavement prefabricated panel, a prefabricated panel assembly and a construction method. Background Art

[0002] As a common pavement construction method, prefabricated road panels are widely used in transportation construction due to their advantages such as high construction efficiency, controllable quality and easy maintenance.

[0003] The current prefabricated road panels are not firmly connected to the roadbed during construction, and their own rigidity is relatively large. When vehicles are driving on the road, the panels are misaligned in the vertical direction. In severe cases, the road surface is arched, affecting the normal passage of vehicles. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a prefabricated slab assembly and a construction method for prefabricated pavement slabs to solve the above-mentioned problems.

[0005] In a first aspect, the present application provides a prefabricated panel for installation on a roadbed to form an assembled road surface, characterized in that it comprises:

[0006] A prefabricated plate, wherein one side of the prefabricated plate forms a support surface and four side walls are formed perpendicular to each other around the support surface, wherein two adjacent side walls are provided with outer protrusions, and the other two adjacent side walls are provided with inner concave parts, and the outer protrusions and the inner concave parts on the opposite side walls of the prefabricated plate are matched; and the outer protrusions and the inner concave parts both extend along the length direction of the side walls where they are located;

[0007] The first positioning member includes an inserting portion and an elastic portion sleeved on one end of the inserting portion, the inserting portion is used to penetrate the prefabricated board from the supporting surface and be inserted into the roadbed, and the elastic portion is used to be placed in the prefabricated board.

[0008] According to the technical solution provided in the embodiment of the present application, notches with rectangular cross-sections are provided at the four corners of the prefabricated board, the side wall between two adjacent notches on the prefabricated board is convex to form the convex part, and the side wall between two linear notches on the prefabricated board is concave to form the concave part; when multiple prefabricated boards are spliced, adjacent notches form a gap.

[0009] According to the technical solution provided in the embodiment of the present application, a plurality of first mounting grooves are arranged on the outer convex portion along the extension direction of the outer convex portion, and a plurality of second mounting grooves are arranged on the inner concave portion along the extension direction of the inner concave portion; the first mounting grooves and the second mounting grooves corresponding to the two prefabricated panels cooperate to form a limiting groove, and the limiting groove is used to cooperate with the limiting member to limit the relative movement of the two prefabricated panels.

[0010] According to the technical solution provided in the embodiment of the present application, the prefabricated board is provided with a through hole, and the through hole passes through the prefabricated board from the supporting surface to a side of the prefabricated board opposite to the supporting surface.

[0011] According to the technical solution provided in the embodiment of the present application, a sink groove is provided on the support surface at a position corresponding to the through hole, and the sink groove is connected to the through hole.

[0012] According to the technical solution provided in the embodiment of the present application, it also includes an installation baffle, which is used to be installed between the gap formed between adjacent prefabricated panels and the roadbed.

[0013] According to the technical solution provided in the embodiment of the present application, it also includes a second positioning member, which passes through the installation baffle through the gap and is inserted into the roadbed.

[0014] A second aspect of the present application provides an assembled pavement prefabricated panel assembly, comprising at least four assembled pavement prefabricated panels as described above, wherein the four assembled pavement prefabricated panels are connected by abutting the outer protrusions and the inner recesses.

[0015] The third aspect of the present application provides a method for constructing an assembled pavement, based on the assembled prefabricated panel assembly as described above, comprising:

[0016] S1: splicing the prefabricated panels according to the roadbed size to form the prefabricated panel assembly, and inserting the limiting member into the limiting groove formed by the adjacent prefabricated panels;

[0017] S2: Digging a roadbed, and digging a first installation pit and a second installation pit in the roadbed, wherein the first installation pit is used to install the first positioning member, and the second installation pit is used to install the second positioning member;

[0018] S3: placing the installation baffle at the gap position on each of the prefabricated panel assemblies, placing the prefabricated panel assemblies in the roadbed, fixing the installation baffle by the second positioning member, and positioning the prefabricated panel assemblies by passing through the first positioning member;

[0019] S4: Repeat step S3 to cover the roadbed with the prefabricated panel assembly, and pour concrete into the first installation pit and the second installation pit respectively, and complete the construction when the concrete surface is flush with the support surface.

[0020] Compared with the prior art, the present application has the following beneficial effects: by arranging the outer protrusion and the inner recess on the side wall of the rectangular prefabricated plate, the two prefabricated plates can be spliced ​​with each other through the outer protrusion and the inner recess on the corresponding side, and the outer protrusion and the inner recess can also facilitate the alignment of the two prefabricated plates during installation; because the outer protrusion and the inner recess both extend along the length direction of the side wall where they are located, the two adjacent prefabricated plates are locked with each other in the vertical direction to avoid vertical misalignment; by arranging the first positioning member, the first positioning member passes through the prefabricated plate to fix the prefabricated plate in the roadbed, on the one hand, the first positioning member improves the lateral stability of the prefabricated plate, and it is not easy to cause lateral misalignment during use; on the other hand, the first positioning member is provided with an elastic part, and the characteristics of the elastic part that is resistant to pull-out but not resistant to shear are utilized to reduce the longitudinal stiffness between the prefabricated plate and the roadbed, to avoid the deformation and damage of the prefabricated plate under the influence of long-term load and temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 A schematic diagram of the structure of the prefabricated pavement slab provided in Example 1 of the present application;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the assembled pavement prefabricated slab from a top view is shown;

[0024] Figure 3 for Figure 2 The schematic diagram of the cross-sectional structure of the assembled pavement prefabricated panel along the AA direction is shown;

[0025] Figure 4 for Figure 3 The schematic diagram of the installation of the prefabricated pavement slab and the roadbed is shown;

[0026] Figure 5 For two Figure 1 The schematic diagram of the splicing structure of the prefabricated pavement panels shown;

[0027] Figure 6 for Figure 5 A schematic diagram of the structure from above;

[0028] Figure 7 for Figure 6 The structure shown is a schematic diagram observed along the BB direction;

[0029] Figure 8 A schematic diagram of the structure of the assembled pavement prefabricated panel assembly provided in Example 2 of the present application;

[0030] Fig. 9 for Figure 8 A schematic diagram of the structure of the assembled pavement prefabricated panel assembly from a top view;

[0031] Fig.10 for Fig. 9 The schematic diagram of the cross-sectional structure of the prefabricated pavement panel assembly shown in FIG.

[0032] Fig.11 for Fig.10 Schematic diagram of the installation of prefabricated pavement panel components and roadbed.

[0033] Figure numbers: 1. prefabricated plate; 2. supporting surface; 3. outer convex part; 4. inner concave part; 5. first positioning member; 6. plug-in part; 7. elastic part; 8. notch; 9. gap; 10. first mounting groove; 11. second mounting groove; 12. limiting groove; 13. limiting member; 14. through hole; 15. sinking groove; 16. mounting baffle; 17. second positioning member; 18. roadbed; 19. first mounting pit; 20. second mounting pit. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] Example 1

[0037] Please refer to Figure 1-Figure 4 This embodiment provides a prefabricated pavement panel, which is used to be installed on a roadbed 18 to form a prefabricated pavement, including:

[0038] A prefabricated plate 1, wherein a support surface 2 is formed on one side of the prefabricated plate 1 and four side walls are formed perpendicular to each other around the support surface 2, wherein two adjacent side walls are provided with outer protrusions 3, and the other two adjacent side walls are provided with inner recesses 4, and the outer protrusions 3 and the inner recesses 4 on the opposite side walls of the prefabricated plate 1 are matched; the outer protrusions 3 and the inner recesses 4 both extend along the length direction of the side walls where they are located;

[0039] The first positioning member 5 includes an inserting portion 6 and an elastic portion 7 sleeved on one end of the inserting portion 6, the inserting portion 6 is used to penetrate the precast panel 1 from the supporting surface 2 and be inserted into the roadbed 18, and the elastic portion 7 is used to be placed in the precast panel 1.

[0040] The prefabricated pavement panels provided in this embodiment are used in conjunction with the roadbed 18. A plurality of prefabricated pavement panels are spliced ​​together and placed in the roadbed 18 to form a prefabricated pavement.

[0041] Specifically, the prefabricated pavement prefabricated panel provided in this embodiment is composed of the prefabricated panel 1 and the first positioning member 5. The prefabricated panel 1 is a rectangular structure. The top surface of the prefabricated panel 1 forms a support surface 2 for forming a pavement when the prefabricated pavement construction is completed. The bottom surface of the prefabricated panel 1 is used to be placed in the roadbed 18. The four side walls of the prefabricated panel 1 are perpendicular to the support surface 2. Two adjacent side walls of the four side walls of the prefabricated panel 1 are provided with the outer protrusion 3, and the other two adjacent side walls are provided with the inner concave portion 4; the two prefabricated panels 1 are provided with a plurality of protruding portions 3, and the other two adjacent side walls are provided with a plurality of concave portions 4. The splicing can be achieved through the outer protrusion 3 and the inner recess 4. The arrangement of the outer protrusion 3 and the inner recess 4 can make the two prefabricated panels 1 spliced ​​to ensure that the supporting surface 2 is flush. As shown in the figure, the outer protrusion 3 and the inner recess 4 both extend in the horizontal direction. After the two prefabricated panels 1 are spliced, the outer protrusion 3 and the inner recess 4 cooperate to prevent the two prefabricated panels 1 from being misaligned in the vertical direction, that is, it avoids the situation where the prefabricated panel 1 is tilted on one side when the other side is subjected to force, thereby ensuring that the assembled pavement after construction can maintain the flatness of the pavement.

[0042] Specifically, the first positioning member 5 is composed of the plug-in portion 6 and the elastic portion 7, the plug-in portion 6 is a positioning steel bar, and the elastic portion 7 is a rubber sleeve sleeved on one end of the plug-in portion 6. During construction, the first positioning member 5 is passed through the prefabricated panel 1 from the supporting surface 2 and inserted into the roadbed 18, and the elastic portion 7 is placed in the prefabricated panel 1. Since the plug-in portion 6 has high rigidity and strong shear resistance, it can limit the lateral movement of the prefabricated panel 1, thereby improving the stability of the assembled pavement; since the elastic portion 7 is made of rubber, rubber is a material with low elastic modulus, and the rubber material is resistant to pull-out but not resistant to shear, placing the elastic portion 7 in the prefabricated panel 1 can prevent the prefabricated panel 1 from being deformed under long-term load and temperature, resulting in being squeezed and damaged by the first positioning member 5, thereby increasing the service life of the prefabricated panel 1.

[0043] Furthermore, notches 8 with rectangular cross-sections are provided at the four corners of the prefabricated panel 1, and the side wall between two adjacent notches 8 on the prefabricated panel 1 is convex to form the convex portion 3, and the side wall between two adjacent notches 8 on the prefabricated panel 1 is concave to form the concave portion 4; when multiple prefabricated panels 1 are spliced, adjacent notches 8 form a gap 9.

[0044] Specifically, refer to Figure 1 and Figure 2Since the four corners of the precast panel 1 are provided with notches 8, the lengths of the four side walls of the precast panel 1 are smaller than the maximum length and maximum width of the precast panel 1, and thus the outer protrusion 3 and the inner recess 4 are also provided with notches at the four corners of the precast panel 1. Since the four corners of the precast panel 1 are prone to collapse when being spliced, the precast panel 1 can be prevented from being damaged at the four corners by providing notches 8 at the four corners. Since the precast panel 1 does not have the outer protrusion 3 and the inner recess 4 at the corners, after the multiple precast panels 1 are spliced, the notches 8 of the multiple precast panels 1 form gaps 9, and the gaps 9 are filled by pouring concrete in the gaps 9.

[0045] Furthermore, a plurality of first mounting grooves 10 are arranged on the outer convex portion 3 along the extension direction of the outer convex portion 3, and a plurality of second mounting grooves 11 are arranged on the inner concave portion 4 along the extension direction of the inner concave portion 4; the first mounting grooves 10 and the second mounting grooves 11 corresponding to the two prefabricated panels 1 cooperate to form a limiting groove 12, and the limiting groove 12 is used to cooperate with the limiting member 13 to limit the relative movement of the two prefabricated panels 1.

[0046] Specifically, refer to Figure 2 , Figure 5 and Figure 6 , a plurality of first mounting grooves 10 are arranged along the extension direction of the corresponding outer protrusion 3, the first mounting grooves 10 extend in a direction perpendicular to the extension direction of the corresponding outer protrusion 3, and extend from the prefabricated board 1 to the outer protrusion 3; a plurality of second mounting grooves 11 are arranged along the extension direction of the corresponding inner recess 4, the second mounting grooves 11 extend in a direction perpendicular to the extension direction of the corresponding inner recess 4. The first mounting grooves 10 and the second mounting grooves 11 located on the opposite side walls of the prefabricated board 1 correspond to each other. When the two prefabricated boards 1 are spliced ​​with each other, the first mounting grooves 10 on one of the prefabricated boards 1 and the second mounting grooves 11 on the other prefabricated board 1 are connected to form the limiting grooves 12, the extension direction of the limiting grooves 12 is perpendicular to the joint between the two prefabricated boards 1, and then the limiting member 13 is inserted into the limiting grooves 12 to limit the two prefabricated boards 1, so as to avoid the relative sliding between the two prefabricated boards 1 in the lateral direction, resulting in poor stability of the assembled pavement structure. The limiting member 13 is provided with a through hole to achieve lightness.

[0047] Furthermore, the prefabricated board 1 is provided with a through hole 14 , and the through hole 14 passes through the prefabricated board 1 from the supporting surface 2 to a side of the prefabricated board 1 opposite to the supporting surface 2 .

[0048] Specifically, refer to Figure 2 and Figure 3 The through hole 14 is opened at the center of the supporting surface 2 corresponding to the precast panel 1. The size of the through hole 14 is larger than the size of the first positioning member 5. The through hole 14 is used to facilitate the first positioning member 5 to pass through the precast panel 1. During construction, when the precast panel 1 is placed in the roadbed 18, the first positioning member 5 is passed through the through hole 14 from one side of the supporting surface 2, the plug-in portion 6 is inserted into the roadbed 18, and the elastic portion 7 is placed in the through hole 14. The height of the elastic portion 7 is not higher than the supporting surface 2. After the first positioning member 5 is installed, concrete is poured into the through hole 14 to fix the precast panel 1 and the first positioning member 5.

[0049] Furthermore, a recessed groove 15 is provided on the support surface 2 at a position corresponding to the through hole 14 , and the recessed groove 15 is communicated with the through hole 14 .

[0050] Specifically, refer to Figure 2 and Figure 3 A sink 15 is provided at the center of the support surface 2, and the through hole 14 corresponds to the center of the sink 15, and the bottom of the sink 15 is connected to the through hole 14. By providing the sink 15, it is convenient to pour concrete into the through hole 14. Since the size of the sink 15 is much larger than the cross-sectional area of ​​the through hole 14, when pouring concrete, it is only necessary to pour concrete into the sink 15. The concrete will enter the through hole 14 through the sink 15, and the concrete will fill the through hole 14 and the sink 15 in turn. When the concrete surface is flush with the support surface 2, the pouring is completed.

[0051] Furthermore, structural steel bars are arranged in the precast panel 1, and two groups of structural steel bars are arranged respectively along the length direction and the width direction of the precast panel 1. Near the sink 15, the density of the structural steel bars is increased to improve the structural strength of the precast panel 1 at the sink 15 position.

[0052] Furthermore, it also includes an installation baffle 16, and the installation baffle 16 is used to be installed between the gap 9 formed between adjacent prefabricated panels 1 and the roadbed 18.

[0053] Specifically, refer to Figure 6 and Figure 7When the multiple precast panels 1 are spliced ​​together, the gap 9 is formed at the joint positions between the corners of the multiple precast panels 1. Since the position of the gap 9 needs to be filled by pouring concrete, when the precast panels 1 are placed in the roadbed 18, the installation baffle 16 is set between the gap 9 and the roadbed 18. The installation baffle 16 is a steel plate. The installation baffle 16 and the notches 8 of the multiple precast panels 1 form a pouring space. The gap 9 can be filled by pouring concrete in the pouring space.

[0054] Furthermore, it also includes a second positioning member 17 , which passes through the gap 9 and the mounting baffle 16 and is inserted into the roadbed 18 .

[0055] Specifically, the second positioning member 17 has the same structure as the first positioning member 5, except that the position of the second positioning member 17 is different. The second positioning member 17 is used to fix the mounting baffle 16. The mounting baffle 16 is provided with a through hole for the second positioning member 17 to pass through. During construction, the second positioning member 17 is inserted into the roadbed 18 by passing through the through hole on the mounting baffle 16 through the gap 9.

[0056] Example 2

[0057] Please refer to Figure 8-Figure 11 This embodiment provides an assembled pavement prefabricated panel assembly, comprising at least four assembled pavement prefabricated panels as described in Example 1, wherein the four assembled pavement prefabricated panels are connected by docking the outer protrusion 3 and the inner recess 4.

[0058] Specifically, in this embodiment, the prefabricated panel assembly is composed of four prefabricated panels 1 in Example 1, and the four prefabricated panels 1 are spliced ​​in pairs through the outer protrusion 3 and the inner concave portion 4. The adjacent two prefabricated panels 1 are fixed by the limiting member 13. The prefabricated pavement prefabricated panel assembly is assembled in advance before construction. During construction, the prefabricated pavement prefabricated panel assembly is placed in the roadbed 18, and the prefabricated pavement prefabricated panel assembly is positioned by the first positioning member 5. The installation baffle 16 is set between the gap 9 formed between the four prefabricated panels 1 and the roadbed 18, and the installation baffle 16 is fixed by the second positioning member 17. The construction of the prefabricated pavement prefabricated panel assembly provided by this embodiment is more convenient than that of the prefabricated pavement prefabricated panel in Example 1, which saves time for on-site construction and improves construction efficiency. It should be noted that the prefabricated pavement prefabricated panel assembly is not limited to being composed of four prefabricated pavement prefabricated panels, and the specific number can be adaptively adjusted according to construction requirements.

[0059] Example 3

[0060] This embodiment provides a method for constructing an assembled pavement, based on the assembled prefabricated panel assembly described in Embodiment 2, comprising:

[0061] S1: splicing the prefabricated panels 1 according to the size of the roadbed 18 to form the prefabricated panel assembly, inserting the limiting member 13 into the limiting groove 12 formed by the adjacent prefabricated panels 1;

[0062] S2: Digging a roadbed 18, and digging a first installation pit 19 and a second installation pit 20 in the roadbed 18, wherein the first installation pit 19 is used to install the first positioning member 5, and the second installation pit 20 is used to install the second positioning member 17;

[0063] S3: placing the installation baffle 16 at the gap 9 on each prefabricated panel assembly, placing the prefabricated panel assembly in the roadbed 18, fixing the installation baffle 16 by the second positioning member 17, and positioning the prefabricated panel assembly by passing through the first positioning member 5;

[0064] S4: Repeat step S3 to cover the roadbed 18 with the prefabricated panel assembly, and pour concrete into the first installation pit 19 and the second installation pit 20 respectively, and the construction is completed when the concrete surface is flush with the support surface 2.

[0065] Specifically, the specific construction method of the prefabricated pavement includes S1-S4 as above. In step S1, the number of the prefabricated panels 1 included in the prefabricated panel assembly is determined according to the size of the roadbed 18, and the corresponding number of the prefabricated panels 1 are spliced ​​to form a prefabricated panel assembly. After the splicing is completed, the limiting member 13 is placed in the limiting groove 12 formed between two adjacent prefabricated panels 1. After the limiting member 13 is placed, the production of the prefabricated panel assembly is completed. The production of the prefabricated panel assembly can be completed in advance, saving construction time at the construction site. In step S2, a roadbed 18 is excavated at the construction site, and a first installation pit 19 and a second installation pit 20 are excavated in the roadbed 18. The relative positions of the first installation pit 19 and the second installation pit 20 correspond to the first positioning member 5 and the second positioning member 17 on the prefabricated panel assembly. The size of the first installation pit 19 is much larger than the cross-sectional size of the first positioning member 5, and the size of the second installation pit 20 is much larger than the cross-sectional size of the second positioning member 17, so as to facilitate the insertion of the first positioning member 5 and the second positioning member 17. In step S3, the installation baffle 16 is placed at the gap 9 position on each of the prefabricated panel assemblies, and the prefabricated panel assembly is placed in the roadbed 18, and the installation baffle 16 is placed between the gap 9 and the roadbed 18. Then, the second positioning member 17 is sequentially inserted through the gap 9 and the installation baffle 16 into the second installation pit 20, and then the first positioning member 5 is sequentially inserted through the sink 15 and the through hole 14 into the first installation pit 19, so as to complete the positioning of one of the prefabricated panel assemblies. In step S4, repeat the above step S3, arrange and install multiple prefabricated panel assemblies in the roadbed 18 and position them, pour concrete into the trough 15 so that the concrete enters the first installation pit 19 through the through hole 14 until the concrete fills the trough 15 and is flush with the support surface 2, and at the same time pour concrete into the gap 9 so that the concrete enters the second installation pit 20 through the gap 9 until the concrete fills the gap 9 and is flush with the support surface 2. After the pouring is completed, wait for the concrete to solidify. After the concrete solidifies, the prefabricated pavement construction is completed.

[0066] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A prefabricated pavement panel, used for installation on a roadbed (18) to form a prefabricated pavement, characterized in that: include: A prefabricated plate (1), wherein a support surface (2) is formed on one side of the prefabricated plate (1), and four side walls are formed around the support surface (2), each of which is perpendicular to the other two side walls, wherein two adjacent side walls are provided with an outer convex portion (3), and the other two adjacent side walls are provided with an inner concave portion (4), and the outer convex portion (3) and the inner concave portion (4) on the opposite side walls of the prefabricated plate (1) are matched; and the outer convex portion (3) and the inner concave portion (4) both extend along the length direction of the side wall on which they are located; A first positioning member (5), the first positioning member (5) comprising an inserting portion (6) and an elastic portion (7) sleeved on one end of the inserting portion (6), the inserting portion (6) being used to penetrate the prefabricated panel (1) from the supporting surface (2) and be inserted into the roadbed (18), and the elastic portion (7) being used to be placed in the prefabricated panel (1).

2. The prefabricated pavement slab according to claim 1, characterized in that: Notches (8) with rectangular cross-sections are provided at the four corners of the prefabricated plate (1); the side wall between two adjacent notches (8) on the prefabricated plate (1) is convex to form the convex portion (3); the side wall between two adjacent notches (8) on the prefabricated plate (1) is concave to form the concave portion (4); when a plurality of the prefabricated plates (1) are spliced, adjacent notches (8) form a gap (9).

3. The prefabricated pavement slab according to claim 2, characterized in that: A plurality of first mounting grooves (10) are arranged on the outer convex portion (3) along the extension direction of the outer convex portion (3), and a plurality of second mounting grooves (11) are arranged on the inner concave portion (4) along the extension direction of the inner concave portion (4); the first mounting grooves (10) and the second mounting grooves (11) corresponding to the two prefabricated panels (1) cooperate to form a limiting groove (12), and the limiting groove (12) is used to cooperate with a limiting member (13) to limit the relative movement of the two prefabricated panels (1).

4. The prefabricated pavement slab according to claim 3, characterized in that: The prefabricated plate (1) is provided with a through hole (14), and the through hole (14) passes through the prefabricated plate (1) from the supporting surface (2) to a side of the prefabricated plate (1) opposite to the supporting surface (2).

5. The assembled pavement prefabricated slab according to claim 4, characterized in that: A sink groove (15) is provided on the support surface (2) at a position corresponding to the through hole (14), and the sink groove (15) is communicated with the through hole (14).

6. The assembled pavement prefabricated slab according to claim 5, characterized in that: It also comprises an installation baffle (16), wherein the installation baffle (16) is used to be installed between the gap (9) formed between adjacent prefabricated panels (1) and the roadbed (18).

7. The assembled pavement prefabricated slab according to claim 6, characterized in that: It also includes a second positioning member (17), which passes through the gap (9) through the mounting baffle (16) and is inserted into the roadbed (18).

8. An assembled pavement prefabricated panel assembly, characterized in that: It comprises at least four prefabricated pavement panels as claimed in claim 7, wherein the four prefabricated pavement panels are connected by butting the outer protrusion (3) and the inner concave portion (4).

9. A method for constructing an assembled pavement, characterized in that: The assembled prefabricated panel assembly according to claim 8 comprises: S1: splicing the prefabricated panels (1) according to the size of the roadbed (18) to form the prefabricated panel assembly, inserting the limiting member (13) into the limiting groove (12) formed by the adjacent prefabricated panels (1); S2: digging a roadbed (18), and digging a first installation pit (19) and a second installation pit (20) in the roadbed (18), wherein the first installation pit (19) is used to install the first positioning member (5), and the second installation pit (20) is used to install the second positioning member (17); S3: placing the installation baffle (16) at the position of the gap (9) on each of the prefabricated panel assemblies, placing the prefabricated panel assemblies in the roadbed (18), fixing the installation baffle (16) by means of the second positioning member (17), and positioning the prefabricated panel assemblies by means of the first positioning member (5) penetrating the roadbed; S4: Repeat step S3 to completely cover the roadbed (18) with the prefabricated panel assembly, and pour concrete into the first installation pit (19) and the second installation pit (20) respectively, and complete the construction when the concrete surface is flush with the support surface (2).

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