Inter-plate connecting structure of prefabricated pavement

Abstract

The invention relates to the technical field of assembled pavements, in particular to an inter-plate connecting structure of a prefabricated assembled pavement, which comprises prefabricated concrete road panels, steel plate connecting pieces and grouting inlay bodies, reserved plate edge female rabbets are arranged on the peripheries of the prefabricated concrete road panels, the female rabbets form grouting grooves after the prefabricated concrete road panels are spliced, and the grouting inlay bodies are arranged in the grouting grooves. The grouting inlay is formed by grouting the grouting groove, and the two ends of the steel plate connecting piece are fixedly connected with the spliced prefabricated concrete road panels on the two sides correspondingly. According to the inter-plate connecting structure of the prefabricated pavement, vertical loads are transmitted through the female tongue-and-groove grouting inlay, horizontal loads are transmitted through the steel plate connecting pieces, the connecting structure is simple, the inter-plate load transmitting capacity is excellent, the principle is safe and reliable, and maintenance and secondary utilization are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated pavements, and in particular to a panel connection structure of a prefabricated prefabricated pavement. Background Art

[0002] With the growing trend toward prefabricated and industrialized construction, prefabricated buildings are becoming increasingly commonplace in the construction industry. This is particularly true for pavement projects, where prefabricated pavements offer a promising future due to their short construction schedules, controlled quality, ease of maintenance and upgrades, and strong recyclability. Compared to traditional cast-in-place concrete pavements, prefabricated pavements significantly improve construction efficiency and quality, and therefore have garnered widespread attention and promotion.

[0003] However, because prefabricated panels are individually prefabricated and assembled on-site, they differ from traditional cast-in-place panels in terms of overall integrity. To ensure the safety and overall lifespan of the pavement, ensuring load transfer between panels and improving the pavement's integrity have become key issues in the development of prefabricated pavement technology.

[0004] Existing connection technologies between prefabricated decking panels mainly include rivet-type, bent bolt-type, dowel-type, mortise and tenon-type, and tongue-and-groove-type. However, these technologies all have certain limitations in practical applications. For example, the rivet-type connection structure requires high installation precision and is prone to damage the reserved structure of the panel. The bent bolt-type connection method requires extremely high installation precision, and the bent bolts are difficult to penetrate if the panel positioning deviates slightly. Although the dowel-type connection structure has been used in some airports, it has problems such as complex installation procedures and limited force transmission capacity. The mortise and tenon-type connection structure is difficult to align and is difficult to achieve in engineering practice. The tongue-and-groove connection structure has problems such as the inability to connect the male and female tongue and groove when multiple panels are spliced, and the tongue and groove cannot transmit lateral loads.

[0005] Driven by national policies and growing market demand, prefabricated paving technology has a promising future. This technology will play a particularly important role in areas such as airport construction, low-altitude economic development, and road engineering. Therefore, developing a prefabricated paving panel connection structure that offers efficient load transfer, stable operation, simple structure, and easy construction is crucial for promoting the development and application of prefabricated paving technology. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a prefabricated and assembled pavement inter-plate connection structure, which transfers vertical loads through tongue-and-groove grouting inlays and uses steel plate connectors to transfer horizontal loads. The connection structure is simple, has excellent load transfer capacity between plates, is safe and reliable in principle, and is easy to maintain and reuse.

[0007] The technical solutions of the present invention are as follows:

[0008] A prefabricated assembly pavement inter-plate connection structure includes a prefabricated concrete road panel, a steel plate connector and a grouting inlay. A reserved plate edge tongue-and-groove is provided around the periphery of the prefabricated concrete road panel. The tongue-and-groove forms a grouting groove after the prefabricated concrete road panels are spliced. The grouting inlay is formed by grouting into the grouting groove. The two ends of the steel plate connector are respectively fixedly connected to the prefabricated concrete road panels on both sides after splicing.

[0009] The precast concrete road panel is a prestressed precast road panel, a plain concrete precast road panel, or a lightweight aggregate concrete precast road panel.

[0010] Precast concrete road panels are rectangular or regular hexagonal.

[0011] The female tongue and groove is a trapezoidal tongue and groove, a semicircular tongue and groove, or a semi-elliptical tongue and groove.

[0012] A plurality of reserved connector installation slots are arranged around the precast concrete road panel, and embedded connector gripping inner thread sleeves are arranged in the reserved connector installation slots. Both ends of the steel plate connector are fixedly connected to the embedded connector gripping inner thread sleeves respectively.

[0013] Bonding gripping threaded steel bars are pre-embedded in the precast concrete road panel, and the pre-embedded connecting piece gripping inner thread sleeve is fixedly connected to the bonding gripping threaded steel bars.

[0014] The bonded gripping threaded steel bars are arranged in two layers, 3 in each layer, and the 3 in each layer are arranged at a 60° angle.

[0015] The center of the embedded connector gripping inner thread sleeve is provided with an internal thread that cooperates with the high-strength anti-slip bolt, and the steel plate connector is fixedly connected to the embedded connector gripping inner thread sleeve through the high-strength anti-slip bolt.

[0016] High-strength anti-slip bolts use high-strength weather-resistant bolts with a grade not lower than 10.9.

[0017] Sealing material is provided in the gaps of the connecting structure between the panels of the prefabricated assembled pavement.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention discloses a prefabricated and assembled pavement inter-plate connection structure, which realizes a tight connection between the plates by arranging a negative tongue and groove and a grouting inlay, effectively transfers vertical loads, and enhances the integrity of the pavement; the use of steel plate connectors and high-strength anti-slip bolts further enhances the connection strength between the plates, improves the shear resistance and overall stability of the pavement, and thus ensures the safety of the pavement.

[0020] 2. The present invention discloses a prefabricated and assembled pavement inter-plate connection structure. This prefabricated and assembled pavement inter-plate connection structure reduces on-site wet operations and shortens the construction period through the standardized production of prefabricated concrete road panels; the design of the tongue-and-groove and steel plate connectors simplifies the connection process between the panels, reduces the construction difficulty, and improves construction efficiency.

[0021] 3. The present invention discloses a prefabricated pavement inter-plate connection structure. The prefabricated pavement inter-plate connection structure is easy to repair and replace later due to the detachability of steel plate connectors and high-strength anti-slip bolts, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall planar structure of a prefabricated assembled pavement panel connection structure according to Example 1 of the present invention;

[0023] Figure 2 Detailed view of the connection between two adjacent precast concrete road panels and a steel plate of a prefabricated assembled pavement panel connection structure according to Example 1 of the present invention;

[0024] Figure 3 Detailed drawing of a trapezoidal double-negative tongue-and-groove joint and a sealing material of a prefabricated assembled pavement inter-panel connection structure according to Example 1 of the present invention;

[0025] Figure 4 Detailed drawing of a circular double-female tongue-and-groove joint and seam sealant of a prefabricated assembled pavement panel connection structure according to Example 1 of the present invention;

[0026] Figure 5 Detailed drawing of an elliptical double-female tongue-and-groove joint and seam sealant of a prefabricated assembled pavement panel connection structure according to Example 1 of the present invention;

[0027] Figure 6 Detailed drawing of the embedded connector gripping inner thread sleeve, reserved connector installation notch, and reserved grouting hole of the inter-panel connection structure of a prefabricated assembled pavement according to Example 1 of the present invention;

[0028] Figure 7 A three-dimensional detailed drawing of a gripping inner thread sleeve of a pre-embedded connector of a prefabricated assembled pavement inter-panel connection structure according to Example 1 of the present invention;

[0029] Figure 8 A detailed plan view of the steel plate connectors and anti-slip high-strength bolts of a prefabricated assembled pavement inter-plate connection structure according to Example 1 of the present invention;

[0030] Figure 9 A three-dimensional detailed drawing of the steel plate connectors and anti-slip high-strength bolts of the inter-plate connection structure of a prefabricated assembled pavement according to Example 1 of the present invention;

[0031] Figure 10 A three-dimensional detailed drawing of a grouting inlay of a prefabricated assembled pavement panel connection structure according to Example 1 of the present invention;

[0032] Figure 11 This is a schematic diagram of the overall planar structure of a prefabricated assembled pavement panel connection structure according to Example 2 of the present invention;

[0033] The components represented by the reference numerals in the figure are:

[0034] The present invention comprises: 1. a precast concrete road panel, 2. a reserved tongue-and-groove at the panel edge, 2-1. a grouting hole, 3. a reserved connector installation notch, 4. a pre-buried connector gripping inner thread sleeve, 4-1. a bonded gripping threaded steel bar, 5. a steel plate connector, 6. a high-strength anti-slip bolt, 7. a grouting inlay, and 8. a sealing material. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0036] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0037] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0038] The technical problem to be solved by the present invention is to develop an inter-plate load transfer structure for prefabricated airport road panels that has high load transfer efficiency, stable operation, simple structure, and easy construction. The present invention replaces the force transfer rods in the transverse joints of cast-in-place road panels and the male and female tongues and grooves in the longitudinal joints of road panels with double-female tongue-and-groove grouting bodies to transfer vertical loads between panels; and replaces the aggregate bite in the transverse joints and the threaded pull rods in the longitudinal joints of cast-in-place road surfaces with plate bolt connectors to transfer horizontal loads between panels. The design of double-female tongue-and-groove and plate bolt connectors can efficiently transfer inter-plate loads, the principle is safe and reliable, the construction method is simple and easy, and it is very convenient for subsequent maintenance and recycling of road panels.

[0039] like Figures 1 to 11 As shown, the inter-plate connection structure of the prefabricated assembled pavement includes a prefabricated concrete road panel 1, a reserved panel edge tongue and groove 2, a reserved connector installation groove 3, a pre-embedded connector gripping inner thread sleeve 4, a steel plate connector 5, a high-strength anti-slip bolt 6, a grouting inlay 7, and a sealing material 8.

[0040] like Figures 3 to 5 As shown, the periphery of the precast concrete road panel is provided with a tongue-and-groove 2. After the adjacent precast concrete road panels 1 are spliced, grouting is poured into the tongue-and-groove 2 to form a grouting inlay 7, which replaces the ability of the original cast-in-place process to transfer vertical loads by the force transfer rods at the transverse joints and the tongue-and-groove at the longitudinal joints. The periphery of the precast concrete road panel 1 is provided with a plurality of reserved connector installation grooves 3, and the reserved connector installation grooves 3 are pre-embedded embedded connector gripping inner thread sleeves 4 for installing steel plate connectors 5. The gaps in the inter-plate connection structure of the precast assembled pavement are sealed with weather-resistant flexible sealing material 8 to prevent debris and rainwater from entering the joints.

[0041] The precast concrete road panels 1 include three material forms: prestressed precast road panels, plain concrete precast road panels, and lightweight aggregate concrete precast road panels; the precast concrete road panels 1 include two types of panels: rectangular and hexagonal; the size of the precast concrete road panels 1 must comply with the modular coordination principle of prefabricated buildings, and a joint width adjustment amount must be reserved when the panels are prefabricated.

[0042] The sizes of typical rectangular precast concrete road panels 1 include but are not limited to: 2500*2500mm, the corresponding precast size of the plate is 2495*2495mm, and the joint width is controlled at 5mm or less; 2500*5000mm, the corresponding precast size of the plate is 2495*4995mm, and the joint width is controlled at 5mm or less; 3000*4000mm, the corresponding precast size of the plate is 2995*3995mm, and the joint width is controlled at 5mm or less.

[0043] The dimensions of a typical hexagonal precast concrete road panel 1 include but are not limited to: a width across side of 2500mm, corresponding to the precast dimensions of the panel: a distance across side of 2995mm, a length on one side of 1440mm, and the joint width is controlled at 5mm or less; a width across side of 2000mm, corresponding to the precast dimensions of the panel: a distance across side of 1995mm, a length on one side of 1150mm, and the joint width is controlled at 5mm or less.

[0044] A full-length reserved plate edge female tongue and groove 2 is set around the precast concrete road panel 1, and the reserved plate edge female tongue and groove 2 includes three structural forms: trapezoidal tongue and groove, semicircular tongue and groove, and semi-elliptical tongue and groove; the reserved plate edge female tongue and groove 2 is provided with grouting holes 2-1 at appropriate positions on the plate edge; the structure of the reserved plate edge female tongue and groove 2 is convenient for rapid assembly and alignment of the precast concrete road panel 1, and the gap between adjacent precast concrete road panels 1 is controlled within 5mm during assembly; the reserved plate edge female tongue and groove 2 forms a grouting groove after adjacent panels are spliced, and grout is poured into the female tongue and groove grouting groove through the reserved grouting holes 2-1, and the grouting material becomes a grouting inlay 7 after the strength is formed.

[0045] The reserved connector installation slots 3 are symmetrically arranged on the edge of the precast concrete road panel 1 to ensure the directional adaptability of the precast concrete road panel 1 and facilitate construction; the plane size of the reserved connector installation slots 3 is slightly larger than the size of the connecting steel plate 5, which is convenient for lowering the steel plate and adjusting the error; the vertical depth of the reserved connector installation slots 3 is slightly larger than the thickness of the connecting steel plate 5, so that the connector will not be significantly higher or excessively lower than the upper plane of the precast concrete road panel 1 after installation; a pre-embedded connector gripping inner thread sleeve 4 is embedded under the reserved connector installation slot 3 for fixing high-strength anti-slip bolts 6.

[0046] The embedded connecting part gripping inner thread sleeve 4 is composed of a circular inner thread sleeve and a bonding gripping threaded steel bar 4-1; the circular inner thread sleeve has a hole at one end, and a screw is punched in it, the length of the inner thread section is not less than 60 mm, and the overall length of the sleeve is not less than 80 mm; the bonding gripping threaded steel bar 4-1 is arranged on the outer wall of the circular sleeve facing the side of the precast concrete road panel 1, in an upper and lower layer arrangement, with 3 bars in each layer, and the 3 bars in a single layer are arranged at an angle of 60°; the diameter d of the bonding gripping threaded steel bar is not less than 10 mm. In order to ensure the gripping effect with the concrete of the panel, the length of the steel bar is not less than 24d.

[0047] The plane shape of the steel plate connector 5 is a round-headed long strip, and the length needs to ensure that the position of the bolt hole can avoid the reserved plate edge groove 2 position of the precast concrete road panel 1 and ensure that the outer wall of the sleeve has a certain thickness of concrete protective layer; one end of the bolt hole reserved on the steel plate connector 5 is an M20 circular bolt hole, and the other end is an M20 adjustable long strip hole; the thickness of the steel plate connector 5 needs to be ensured to be coordinated with the shear bearing capacity of the selected high-strength bolts, and at the same time, a nut with an enlarged hole hidden bolt needs to be set, so the overall thickness of the steel plate connector is not less than 40mm, of which 20mm is the enlarged nut hidden hole, and the lower 20mm is the bolt hole pressure-bearing thickness; the steel plate connector is coordinated with the shear strength of the selected high-strength bolts, and the steel selected is a weather-resistant and tough steel with a strength not lower than Q345.

[0048] The high-strength anti-slip bolt 6 adopts a high-strength weather-resistant bolt with a grade of not less than 10.9, a model of M20, and an allowable shear resistance of not less than 130kN; the length of the bolt screw is not less than 60mm, and a wire-free section is provided near the nut to ensure effective contact with the steel plate connector, and the length of the wire-free section is not less than 20mm; after the bolt is installed, the bolt on one side of the long hole of the steel plate connector needs to be welded and fixed to the steel plate connector.

[0049] like Figure 10 As shown, the grouting inlay 7 is an inlay in the double-negative tongue-and-groove joint between the plates formed by grouting, corresponding to the double-negative tongue-and-groove form reserved for the plates, and is in three forms: symmetrical trapezoidal, circular or elliptical; the grouting inlay will replace the positive and negative tongue-and-groove, force transfer rods and other mechanisms in the cast-in-place process to transfer the vertical load between the plates; to ensure the load transfer capacity, the compressive and shear strengths of the grouting inlay need to be coordinated with the material strength of the precast concrete road panel 1. After calculation and testing, it is determined that the grouting material needs to be a micro-expansion high-performance mortar grouting material with a strength of not less than M40; because the double-negative tongue-and-groove grouting inlay has insufficient contact with the surface layers of the plates on both sides, in order to ensure the load transfer capacity, the plate joint width is required to be no more than 5mm, ensuring that the grouting inlay is in a multi-directional compression and single-sided shear stress state most of the time.

[0050] Sealing material 8 is used to seal gaps between panels, gaps between connectors and panels, and gaps between board bolts; the sealing material needs to be made of high-quality weather-resistant flexible material, such as silicone.

[0051] In Example 1, Figures 1 to 10As shown, the precast concrete road panel is rectangular in shape, with block dimensions of 2500*5000mm and a thickness of 200mm. The reserved slab edge recess is a trapezoidal recess with dimensions of 60*40*30mm. The connecting steel plate measures 245*60*40mm (length*width*thickness). The connecting bolts are 10.9-grade M20 anti-slip bolts with a 60mm screw length. The embedded sleeve is 100mm long, with an internal threaded hole length of 65mm. The outer wall reinforcement is φ10 threaded steel bar with a length of 24d = 240mm. The grouting material for the double recess is M40 slightly expansive mortar. The plate bolt connector is set with three long sides and two short sides.

[0052] Finite element analysis and on-site full-scale test verification were performed on Example 1.

[0053] When performing the finite element analysis, the applied load is a single wheel load of 196.52Kn, and the load acts on the middle of the long side plate and the middle of the short side plate respectively. The maximum bending tensile stress at the bottom of the long side plate of the loaded plate is calculated to be 4.691MPa, and the stress at the bottom of the long side plate of the indirect loaded plate is 3.166MPa. The load transfer coefficient of the long side joint is 3.166÷4.691=0.675. Similarly, the load transfer coefficient of the short side joint is calculated to be 0.711.

[0054] During full-scale testing, slab top deflection was measured using LVDT displacement sensors. The joint load transfer coefficient was calculated based on the deflection ratio between the unloaded and loaded slabs. Only the long-side joint load transfer coefficient was measured during the test. A multi-stage loading method was used, with the maximum stage load being 213.6 kN. The average measured long-side joint load transfer coefficient reached 0.721.

[0055] Finite element simulation was used to analyze the stresses of the plate-bolt connector. By simulating the tensile and compressive stresses in the plate bolts caused by temperature stress, the bearing capacity of the steel plate connector's axial hole and the shear capacity of the high-strength bolts were verified. The simulated temperature difference was 20°C. The calculated shear stress on the bolts was 80.25 kN, which is less than the allowable shear stress of the bolts and the bearing capacity of the steel plate axial hole.

[0056] Example 1 adopts the inter-plate connection structure of the prefabricated assembled pavement described in the present invention, and the plate joint load transfer coefficient can reach 0.675-0.721. When 3 plate bolt connectors are set on a single long side and 2 plate bolt connectors are set on a single short side, the thermal shrinkage stress caused by a temperature difference of 20°C is distributed to a single bolt, which is approximately 80.25Kn, less than the allowable stress value of the plate and bolt, and the plate bolt is safely stressed.

[0057] In Example 2, Figure 11As shown, the precast concrete road panel 1 is hexagonal in shape, with a block size of 2500mm across and a thickness of 200mm. The reserved edge groove 2 is a circular groove with a groove diameter of 60mm. The connecting steel plate dimensions are 245*60*40mm (length*width*thickness). The connecting bolts are 10.9-grade M20 anti-slip bolts with a screw length of 60mm. The embedded sleeve is 100mm long, with an internal threaded hole length of 65mm. The outer wall reinforcement is φ10 threaded steel bar with a length of 24d = 240mm. The grouting material in the double groove is M40 slightly expansive mortar. One plate bolt connector is set on each side.

[0058] Finite element analysis was performed on Example 2 to verify: when performing the finite element analysis, the applied load was a single-wheel load of 196.52 Kn, and the load acted on the middle of one side of the hexagonal plate. The maximum bending tensile stress at the bottom of the loaded plate edge was calculated to be 4.759 MPa, and the maximum bending tensile stress at the bottom of the indirect loaded plate edge was 4.083 MPa. The load transfer coefficient of the long side joint was 4.083 ÷ 4.759 = 0.858.

[0059] Finite element simulation was used to analyze the stresses in the plate-bolt connector. By simulating the tensile and compressive stresses in the plate bolts caused by temperature stress, the bearing capacity of the steel plate connector's axial hole and the shear capacity of the high-strength bolts were verified. The simulated temperature difference was 20°C. The calculated shear stress on the bolts was 12.9 kN, which is less than the allowable shear stress of the bolts and the bearing capacity of the steel plate axial hole.

[0060] Example 2 adopts the inter-plate connection structure of the prefabricated assembled pavement described in the present invention, and the plate joint load transfer coefficient can reach 0.85. When one plate bolt connector is set on each side of the hexagonal plate, the thermal shrinkage stress caused by a temperature difference of 20°C is distributed to a single bolt, which is approximately 12.9Kn, less than the allowable stress value of the plate and bolt, and the plate bolt is safely stressed.

[0061] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A prefabricated pavement inter-board connection structure, characterized in that: The invention comprises a precast concrete road panel (1), a steel plate connector (5) and a grouting inlay (7). A reserved plate edge female tongue-and-groove (2) is provided around the periphery of the precast concrete road panel (1). The female tongue-and-groove (2) forms a grouting groove after the precast concrete road panels (1) are spliced together. The grouting inlay (7) is formed by grouting into the grouting groove. The two ends of the steel plate connector (5) are respectively fixedly connected to the precast concrete road panels (1) on both sides after splicing.

2. The prefabricated pavement panel connection structure according to claim 1, wherein: The precast concrete road panel (1) is a prestressed precast road panel, a plain concrete precast road panel, or a lightweight aggregate concrete precast road panel.

3. The inter-board connection structure of a prefabricated assembled pavement according to claim 2, characterized in that: The precast concrete road panel (1) is rectangular or hexagonal.

4. The inter-board connection structure of a prefabricated assembled pavement according to claim 1, characterized in that: The female tongue and groove (2) is a trapezoidal tongue and groove, a semicircular tongue and groove, or a semi-elliptical tongue and groove.

5. The inter-board connection structure of a prefabricated assembled pavement according to claim 1, characterized in that: A plurality of reserved connector installation notches (3) are provided around the precast concrete road panel (1), and a pre-buried connector gripping inner thread sleeve (4) is provided in the reserved connector installation notches (3), and both ends of the steel plate connector (5) are respectively fixedly connected to the pre-buried connector gripping inner thread sleeve (4).

6. The inter-board connection structure of a prefabricated assembled pavement according to claim 5, characterized in that: A bonding gripping threaded steel bar (4-1) is pre-embedded in the precast concrete road panel (1), and a pre-embedded connecting piece gripping inner thread sleeve (4) is fixedly connected to the bonding gripping threaded steel bar (4-1).

7. The inter-board connection structure of a prefabricated assembled pavement according to claim 6, characterized in that: The bonded gripping threaded steel bars (4-1) are arranged in two layers, 3 in each layer, and the 3 in each layer are arranged at an angle of 60 degrees.

8. The inter-board connection structure of a prefabricated assembled pavement according to claim 5, characterized in that: The center of the embedded connector gripping inner thread sleeve (4) is provided with an inner thread that cooperates with a high-strength anti-slip bolt (6), and the steel plate connector (5) is fixedly connected to the embedded connector gripping inner thread sleeve (4) via the high-strength anti-slip bolt (6).

9. The inter-board connection structure of a prefabricated assembled pavement according to claim 8, characterized in that: The high-strength anti-slip bolts (6) are high-strength weather-resistant bolts with a grade not lower than 10.

9.

10. The prefabricated pavement inter-panel connection structure according to claim 1, characterized in that: Sealing material (8) is provided in the gaps of the inter-board connection structure of the prefabricated assembled pavement.

Images