An airport assembled pavement connecting joint based on a hinge connection

Abstract

An airport assembled pavement connecting node based on hinge connection, which comprises a hinge connecting device, a prefabricated concrete pavement slab, a bolt connecting piece and a viscoelastic material filling layer; the hinge connecting device comprises a pair of leaves, a pin and a lower structure; the bolt connecting piece comprises a nut, a screw rod, a nut and a pre-embedded steel bar; the airport assembled pavement connecting node based on hinge connection provided by the utility model solves the problems of low repair efficiency and complex construction technology when local pavement is damaged, and can realize quick repair of local pavement slab, can shorten the time for replacing pavement slab when local pavement is damaged, improve repair efficiency, reduce construction difficulty, and improve the overall operation efficiency of the airport.

Description

Technical Field

[0001] This utility model belongs to the field of airport pavement infrastructure technology, and specifically relates to an airport prefabricated pavement connection node based on hinge connection. Background Technology

[0002] Runways are an important part of airports, serving as crucial areas for aircraft takeoff and landing. Currently, most airport pavements are made of concrete. While concrete pavements have advantages such as high strength and ease of construction, their biggest drawback is the difficulty of localized repairs. To address this issue, some airports have begun using prefabricated pavements for partial replacement of damaged pavements, improving repair efficiency.

[0003] However, prefabricated pavement has the following problems:

[0004] 1. Currently, airport passenger traffic is gradually becoming busy, and some airports do not have the conditions to carry out construction without stopping operations. When a local pavement is damaged, the airport's operational efficiency is greatly reduced. Most airports use prefabricated pavement panels that are connected by welding or steel bars. When a local pavement is damaged, replacing the pavement panels is costly, time-consuming, and technically complex.

[0005] 2. Prefabricated pavement panels connected by steel bars or welding are prone to longitudinal cracks due to their complex stress state, resulting in local pavement damage. Summary of the Invention

[0006] To address the aforementioned problems, the purpose of this utility model is to provide an airport prefabricated pavement connection node based on hinged connections.

[0007] To achieve the above objectives, the airport prefabricated pavement connection node based on hinge connection provided by this utility model includes a hinge connection device, precast concrete pavement panels, bolted connectors, and a viscoelastic material filling layer; wherein, the middle of the adjacent edges of two adjacent precast concrete pavement panels are respectively recessed downward to form a cuboid notch, and the two corresponding notches constitute a hinge device connection interface; the hinge connection device includes a pair of blades, pins, and a lower structure; wherein the lower structure is composed of a vertical plate and a horizontal frame; the lower ends of the two sides of the vertical plate are respectively connected to the middle of the two sides of the horizontal frame, and the two ends of the top surface are connected to the two ends of the pins; the vertical plate is located in the joint between the two adjacent sides of two adjacent precast concrete pavement panels; the horizontal frame is located before and after the vertical plate. The components are respectively located on the bottom surface of two adjacent precast concrete pavement panels below the corresponding notches; one edge of a pair of blades is symmetrically connected to the middle of a pin serving as a hinge axis, and the blades contact the bottom surface of the hinge device connection interface when horizontally positioned; at least one screw hole is formed in the middle of each blade; the bolt connection includes a nut, a screw rod, a nut, and a pre-embedded reinforcing bar; wherein the nut is connected to the upper end of the pre-embedded reinforcing bar, and the nut and the pre-embedded reinforcing bar are embedded together in the part below the notch on each precast concrete pavement panel; the lower end of the screw rod is connected to the nut, the middle part passes through the screw hole on the blade, and the upper part is locked with a nut; a viscoelastic material filling layer is laid in the hinge device connection interface, and the top surface is flush with the top surface of the precast concrete pavement panel.

[0008] The hinge connection device, including the leaf plates, pins, and lower structure, is made of steel.

[0009] The embedded steel bars are L-shaped.

[0010] The screw holes on the sheet are elliptical, and when the sheet is set horizontally, the long axis of the screw holes is aligned with the extension direction of the two side edges of the precast concrete pavement panel.

[0011] The number of screw holes on the sheet is the same as the number of bolted connectors.

[0012] The airport prefabricated pavement connection node based on hinge connection provided by this utility model solves the problems of low repair efficiency and complex construction technology when local pavement is damaged. The airport prefabricated pavement connection node based on hinge connection can realize the rapid repair of local pavement panels. When local pavement is damaged, the time for replacing pavement panels can be shortened, the repair efficiency can be improved, the construction difficulty can be reduced, and the overall operational efficiency of the airport can be improved. Attached Figure Description

[0013] Figure 1 This is a longitudinal structural cross-sectional view of the airport prefabricated pavement connection node based on hinge connection provided by this utility model.

[0014] Figure 2 This is a schematic diagram of the hinge connection device in the airport prefabricated pavement connection node based on hinge connection provided by this utility model. Detailed Implementation

[0015] The following describes in detail the airport prefabricated pavement connection node based on hinge connection provided by this utility model, with reference to examples and accompanying drawings.

[0016] like Figure 1 — Figure 2 As shown, the airport prefabricated pavement connection node based on hinge connection provided by this utility model includes a hinge connection device 1, a precast concrete pavement panel 2, bolt connectors, and a viscoelastic material filling layer 4; wherein, the middle part of the adjacent edges of two adjacent precast concrete pavement panels 2 are respectively recessed downward to form a cuboid notch, and the two corresponding notches constitute a hinge device connection interface 21; the hinge connection device 1 includes a pair of blades 11, pins 12, and a lower structure; wherein the lower structure is composed of a vertical plate 131 and a horizontal frame 132; the lower ends of the two sides of the vertical plate 131 are respectively connected to the middle of the two sides of the horizontal frame 132, and the two ends of the top surface are connected to the two ends of the pins 12; the vertical plate 131 is located in the joint between the two adjacent sides of the two adjacent precast concrete pavement panels 2; the horizontal frame 132 is provided with the following components at the front and rear of the vertical plate 131. The blades 11 are placed on the bottom surface of two adjacent precast concrete pavement panels 2, below the corresponding notches. One side edge of a pair of blades 11 is symmetrically connected to the middle of the pin 12, which serves as the hinge axis, and the blades 11 are in contact with the bottom surface of the hinge device connection interface 21 when they are horizontally positioned. At least one screw hole is formed in the middle of each blade 11. The bolt connection includes a nut 31, a screw 32, a nut 33, and a pre-embedded reinforcing bar 34. The nut 31 is connected to the upper end of the pre-embedded reinforcing bar 34, and the nut 31 and the pre-embedded reinforcing bar 34 are embedded together in the part of each precast concrete pavement panel 2 below the notch. The lower end of the screw 32 is connected to the nut 31, the middle part passes through the screw hole on the blade 11, and the upper part is locked by the nut 33. The viscoelastic material filling layer 4 is laid in the hinge device connection interface 21, and the top surface is flush with the top surface of the precast concrete pavement panel 2.

[0017] The hinge connection device 1 is made of steel, including the leaf 11, pin 12, and lower structure.

[0018] The embedded steel bar 34 has an L-shaped structure.

[0019] The screw holes on the sheet 11 are elliptical, and when the sheet 11 is set horizontally, the long axis of the screw holes is aligned with the extension direction of the two side edges of the precast concrete pavement panel 2. This allows the precast concrete pavement panel 2 to have a certain displacement space when it deforms due to temperature changes.

[0020] The number of screw holes on the sheet 11 is the same as the number of bolt connectors.

[0021] The assembly, disassembly, and replacement method of the airport prefabricated pavement connection node based on hinge connection provided by this utility model is described below:

[0022] During assembly, the construction workers first flip up a pair of flaps 11 on the hinge connection device 1, placing the front or rear part of the lower structure on the bottom side of a precast concrete pavement panel 2 below the notch; then, the corresponding edge of another precast concrete pavement panel 2 is symmetrically placed on the rear or front part of the lower structure; then, the flaps 11 are laid flat, and during this process, an oval screw hole on the flap 11 is fitted onto the outside of a screw 32 on a pre-embedded bolt connector, and then the exposed upper part of the screw 32 is locked with a nut 33, thereby completing the connection between the hinge connection device 1, the pre-embedded bolt connector and the precast concrete pavement panel 2; finally, a viscoelastic material filling layer 4 is laid in the hinge device connection interface 21 formed by the notches on the adjacent edges of two adjacent precast concrete pavement panels 2 until the top surface of the viscoelastic material filling layer 4 is flush with the top surface of the precast concrete pavement panel 2.

[0023] During disassembly and replacement, first lift the viscoelastic material filling layer 4 to expose the hinge connection device 1. Then, unscrew the nut 33 fixed on the screw 32, flip the leaf 11 upwards, and remove the damaged precast concrete pavement panel 2. Then, place the precast concrete pavement panel 2 to be replaced on the damaged precast concrete pavement panel 2. Then, flatten the leaf 11. During this process, make an oval screw hole on the leaf 11 fit over the outside of the screw 32 on the pre-embedded bolt connector. Then, use the nut 33 to lock the exposed upper part of the screw 32, thus completing the connection between the hinge connection device 1, the pre-embedded bolt connector, and the precast concrete pavement panel 2. Finally, lay the viscoelastic material filling layer 4 in the hinge device connection interface 21 formed by the notches on the adjacent edges of two adjacent precast concrete pavement panels 2 until the top surface of the viscoelastic material filling layer 4 is flush with the top surface of the precast concrete pavement panel 2, thus completing the process of disassembling and replacing the precast concrete pavement panel 2.

Claims

1. A hinged connection based airport precast pavement connection node, characterized by: The hinge-based airport prefabricated pavement connection node includes a hinge connection device (1), precast concrete pavement panels (2), bolted connectors, and a viscoelastic material filling layer (4); wherein, the middle of the adjacent edges of two adjacent precast concrete pavement panels (2) are recessed downwards to form a cuboid notch, and the two corresponding notches constitute a hinge device connection interface (21); the hinge connection device (1) includes a pair of blades (11), pins (12), and a lower structure; wherein the lower structure is composed of a vertical plate (131) and a horizontal frame (132); the lower ends of the two sides of the vertical plate (131) are respectively connected to the middle of the two sides of the horizontal frame (132), and the two ends of the top surface are connected to the two ends of the pins (12); the vertical plate (131) is located in the joint between the two adjacent sides of the two adjacent precast concrete pavement panels (2); the parts of the horizontal frame (132) located before and after the vertical plate (131) are respectively set in the joint between the two adjacent precast concrete pavement panels (2). On the bottom side of the earthwork panel (2), located below the corresponding notch; one side edge of a pair of blades (11) is symmetrically connected to the middle of the pin (12) which serves as the hinge axis, and when the blades (11) are horizontally positioned, they contact the bottom surface of the hinge device connection interface (21); at least one screw hole is formed in the middle of each blade (11); the bolt connection includes a nut (31), a screw (32), a nut (33), and a pre-embedded reinforcing bar (34); wherein the nut (31) connects At the upper end of the pre-embedded reinforcing bar (34), and together with the nut (31), the pre-embedded reinforcing bar (34) is embedded in the part below the notch on each precast concrete pavement panel (2); the lower end of the screw rod (32) is connected to the nut (31), the middle part passes through the screw hole on the leaf (11), and the upper part is locked with a nut (33); the viscoelastic material filling layer (4) is laid in the hinge device connection interface (21), and the top surface is flush with the top surface of the precast concrete pavement panel (2).

2. The hinged connection based airport assembled pavement connection node according to claim 1, characterized in that: The hinge connection device (1) is made of steel, including the leaf (11), pin (12) and lower structure.

3. The hinged connection based airport assembled pavement connection node of claim 1, wherein: The embedded steel bar (34) has an L-shaped structure.

4. The hinged connection based airport assembled pavement connection node of claim 1, wherein: The screw holes on the sheet (11) are elliptical, and when the sheet (11) is set horizontally, the long axis of the screw holes is consistent with the extension direction of the two side edges of the precast concrete pavement panel (2).

5. The hinged connection based airport assembled pavement connection node of claim 1, wherein: The number of screw holes on the leaf (11) is the same as the number of bolt connectors.

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