CN114960334A - Assembled airport pavement structure and construction method thereof - Google Patents

Abstract

The application relates to the technical field of constructional engineering and discloses an assembled airport pavement structure and a construction method thereof. The assembled airport pavement structure comprises a base layer and a surface layer laid on the base layer, wherein the surface layer comprises a plurality of prefabricated plates and fasteners, and each prefabricated plate comprises a main body part and a convex part arranged on one side of the main body part in a protruding mode; the main body parts of the prefabricated plates are arranged towards the base layer and form a plurality of columns of upright prefabricated plate groups, and gaps are formed between every two adjacent columns of upright prefabricated plate groups; the protrusions of the plurality of prefabricated plates are arranged towards the base layer and form a plurality of columns of inverted prefabricated plate groups, and the inverted prefabricated plate groups are embedded in gaps formed by two adjacent columns of upright prefabricated plate groups; the prefabricated plates which are arranged in an overlapped mode are distributed in a staggered mode along the first direction, and the fasteners are connected with the main body portions of the prefabricated plates which are arranged in an overlapped mode. The application provides an assembled airport pavement structure and a construction method thereof, which can solve the technical problems that the existing assembled airport pavement structure is complex, inconvenient to install, poor in inter-plate force transfer effect, poor in waterproof performance and the like.

Description

Prefabricated airport pavement structure and its construction method

technical field

The present application relates to the technical field of construction engineering, in particular to a prefabricated airport pavement structure and a construction method thereof.

Background technique

The airport pavement refers to one or more layers of artificial structures paved with road construction materials on the natural soil foundation and the top surface of the base layer.

At present, my country's airports mainly use cast-in-place cement concrete pavement. The pavement construction process has a low degree of automation, a long cycle, and high labor and material costs. In the related art, in order to overcome many shortcomings of the cast-in-place concrete process, a prefabricated pavement is designed, that is, a prefabricated slab is used to replace the traditional cast-in-place slab.

The existing prefabricated pavement has a single type of structure, and the prefabricated slabs are mostly connected by structures such as dowel bars or prestressed steel bars, which affect the force transmission between the slabs. And other issues.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a prefabricated airport pavement structure and a construction method thereof, which can solve the technical problems of the existing prefabricated airport pavement, such as complex connection structure, inconvenient installation, poor force transfer effect between boards and poor waterproof performance.

In order to solve the above technical problems, in the first aspect, the present application provides a prefabricated airport pavement structure, comprising a base layer and a surface layer laid on the base layer, and the surface layer includes a plurality of prefabricated boards and fasteners, The prefabricated board includes a main body part and a protruding part with the same thickness, the main body part and the protruding part have the same length in the first direction, and the protruding part is protruded on one side of the main body part;

The main body parts of a plurality of the prefabricated panels are arranged towards the base layer and form a multi-row upright prefabricated panel group, the upright prefabricated panel groups extend along the first direction, and are formed between two adjacent rows of the upright prefabricated panel groups gap;

The protruding parts of a plurality of the prefabricated boards are arranged towards the base layer and form a multi-row inverted prefabricated board group, the inverted prefabricated board group extends along the first direction, and the inverted prefabricated board group is embedded in the adjacent two rows of the in the gap formed by the erecting prefabricated panel group;

The prefabricated boards arranged on top of each other are staggered and distributed along the first direction, and the fasteners are connected to the main body parts of the prefabricated boards arranged on top of each other.

In one embodiment, the protruding portion of the prefabricated board is strip-shaped and disposed in the middle of the main body portion, and the cross-section of the prefabricated board is T-shaped.

In an embodiment, the prefabricated boards arranged on top of each other are staggered by a predetermined distance in the first direction, and the predetermined distance is half of the length of the prefabricated boards in the first direction.

In one embodiment, the main body portion of the prefabricated plate is provided with a plurality of installation holes, and the plurality of installation holes are distributed on opposite sides of the raised portion; the fasteners include high-strength bolts, The high-strength bolts are inserted into the installation holes of the prefabricated boards that are arranged on top of each other.

In one embodiment, the mounting hole includes a fixed part and a connecting part that communicate with each other, the fixed part is located on the side of the main body part away from the protruding part, and the diameter of the fixed part is larger than the diameter of the connecting part. a hole diameter and a stepped surface is formed at the position of the orifice; the fastener further includes a nut adapted to the high-strength bolt, and the head of the high-strength bolt is arranged on the prefabricated plate of the main body part close to the base layer The nut is installed on the free end of the high-strength bolt, and the nut is arranged on the installation of the prefabricated board where the main body part is far away from the base layer. inside the hole and abut against the corresponding step surface.

In one embodiment, concrete is poured into the fixing portion where the nut is located.

In one embodiment, the diameter of the connecting portion of the mounting hole is larger than the diameter of the high-strength bolt.

In one embodiment, a waterproof layer is provided on a side of the main body portion of the prefabricated board facing the protruding portion.

In one embodiment, the waterproof layer is mortar or leather pad.

The prefabricated airport pavement structure provided by this application includes a base layer and a surface layer laid on the base layer. The surface layer is paved with a plurality of prefabricated boards, and the prefabricated airport pavement structure uses prefabricated technology instead of traditional cast-in-place technology, convenient construction and high construction efficiency. Wherein, the prefabricated board includes a main body portion and a protruding portion with the same thickness. Along the first direction, the main body portion and the protruding portion have the same length and the protruding portion is protruded on one side of the main body portion. Small mass, easy to hoist. In addition, the main body parts of several prefabricated panels are arranged towards the base layer and form a multi-row vertical prefabricated panel group, and the raised parts of several prefabricated panels are arranged towards the base layer and form a multi-row inverted prefabricated panel group, and the inverted prefabricated panel group is embedded in the adjacent two In the gap formed between the rows of erecting prefabricated panels, the main part of the prefabricated panel with the raised part facing the base layer and the main part of the prefabricated panel with the main body part facing the base layer are arranged on top of each other and are fixedly connected by fasteners, so that Different multiple prefabricated panels are assembled together to form a surface layer with the same thickness and smooth surface everywhere, and since there is no installation gap between adjacent prefabricated panels, multiple processes such as secondary grout, caulking, and plastering can be omitted. , which can further simplify the construction steps, improve the construction efficiency, and facilitate the rapid assembly of the surface layer. At the same time, since there is no vertical end face between the adjacent prefabricated panels, the waterproof performance of the surface layer can also be improved to prevent ground water from invading the base layer. In addition, the use of fasteners to replace connecting structures such as dowel rods or prestressed steel bars can further simplify the prefabricated panel structure, the installation accuracy is easy to control, and it can avoid the problem of stress concentration at the connection of the prefabricated panels caused by impact loads, and the overall performance of the surface layer. Good, not easy to damage, high reliability.

In a second aspect, the present application provides a construction method for a prefabricated airport pavement structure for laying the prefabricated airport pavement structure as described in the first aspect, the construction method comprising:

laying the base;

Lay multiple rows of upright prefabricated panel groups on the base layer, so that a gap is formed between two adjacent rows of the upright prefabricated panel groups, wherein the main part of the prefabricated panels of the upright prefabricated panel groups faces the base layer set up;

Lay multiple rows of inverted prefabricated panel groups on the base layer, so that the inverted prefabricated panel groups are embedded in the gap formed by two adjacent rows of the upright prefabricated panel groups, and make the upright prefabricated panel groups The prefabricated panels of the inverted prefabricated panel group and the prefabricated panels of the inverted prefabricated panel group are staggered and distributed, wherein the raised parts of the prefabricated panels of the inverted prefabricated panel group are arranged toward the base layer;

Fasteners are installed to connect the prefabricated panels arranged on top of each other.

The construction method for a prefabricated airport pavement structure provided by the present application includes laying a base layer, laying an upright prefabricated panel group on the base layer, laying an inverted prefabricated panel group on the base layer, and installing fasteners, wherein the upright prefabricated panel group and the The inverted prefabricated panel group includes a plurality of prefabricated panels with different laying directions, and each row of the inverted prefabricated panel group is embedded in the gap between two adjacent rows of upright prefabricated panel groups to form a surface with the same thickness and smooth surface everywhere. The above construction method uses prefabricated technology to replace the traditional cast-in-place process, and uses fasteners to replace the dowel rod connection structure between the plates, avoiding secondary grouting, caulking, plastering and other processes, which can reduce the difficulty of construction. Simplifying the construction steps and improving the construction efficiency is conducive to the rapid assembly of the surface layer and the rapid pavement of the prefabricated airport pavement structure, and the prefabricated airport pavement structure with stable surface layer structure and good waterproof effect can be laid.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic structural diagram of a fabricated airport pavement structure provided by an embodiment of the present application;

Fig. 2 is the top view of the prefabricated airport pavement structure shown in Fig. 1;

Fig. 3 is the structural schematic diagram of the prefabricated board in the prefabricated airport pavement structure shown in Fig. 1;

Figure 4 is a side view of the prefabricated panel shown in Figure 4;

FIG. 5 is a flowchart of a construction method of a prefabricated airport pavement structure provided by an embodiment of the present application.

Description of main component symbols:

100. Prefabricated airport pavement structure;

1. Base layer; 11. Soil foundation; 12. Cushion layer; 13. Water stabilization layer;

2. Surface layer; 20. Prefabricated board; 21. Main body part; 211. Mounting hole; 2111. Fixed part;

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of description, rather than indicating or implying the referred device Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the patent. The terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance or implying indicating the number of technical features. "Plurality" means two or more, unless expressly specifically limited otherwise.

In the first aspect, as shown in FIGS. 1-4 , the present application provides a prefabricated airport pavement structure 100 , which is used in an airport as a ramp for aircraft takeoff, landing, taxiing, maintenance, and parking.

As shown in FIG. 1 and FIG. 2 , the fabricated airport pavement structure 100 provided by the present application includes a base layer 1 and a surface layer 2 laid on the base layer 1 . Among them, the base layer 1 includes the soil foundation 11, the cushion layer 12 and the water stabilization layer 13 arranged in sequence from bottom to top. The surface layer 2 includes a plurality of tightly connected prefabricated panels 20 and fasteners (not shown in the figure). The surface layer 2 is used as a road surface layer to provide support for the aircraft structure and prevent ground water from infiltrating the base layer 1 .

As shown in FIG. 1 , FIG. 3 and FIG. 4 , the prefabricated board 20 includes a main body portion 21 and a protruding portion 22 of the same thickness, and the main body portion 21 and the protruding portion 22 are in a first direction (for example, the direction indicated by X in FIG. 1 ) The upper lengths are the same, and the protruding portion 22 is protruded on one side of the main body portion 21 . If the main body portion 21 of the prefabricated panel 20 is disposed toward the base layer 1 and forms a multi-row upright prefabricated panel group (eg, the prefabricated panel group shown in FIG. 1 ), a gap is formed between two adjacent rows of the upright prefabricated panel group. If the raised portion 22 of the prefabricated panel 20 is disposed toward the base layer 1 and forms a multi-row upside-down prefabricated panel group (for example, the prefabricated panel group shown in B in FIG. 1 ), the inverted prefabricated panel group is embedded in two adjacent rows of upright prefabricated panel groups within the gap formed. The main body portion 21 of the prefabricated panel 20 in the erect prefabricated panel group and the main body portion 21 of the prefabricated panel 20 in the inverted prefabricated panel group are arranged on top of each other, and the raised portion 22 of the prefabricated panel 20 in the upright prefabricated panel group is the same as the inverted prefabricated panel 20. The main body parts 21 of the prefabricated panels 20 in the prefabricated panel group are in close contact with each other.

As shown in FIG. 1 and FIG. 2 , both the upright prefabricated panel group and the inverted prefabricated panel group are extended along the first direction, and the two prefabricated panels 20 arranged on top of each other are staggered and distributed along the first direction, so that each prefabricated panel 20 The main body part 21 of the prefabricated plate 20 can be overlapped with the main body parts 21 of the four prefabricated plates 20, and the fasteners connect the main body parts 21 of the prefabricated plates 20 arranged on top of each other, so that the plurality of prefabricated plates 20 are connected in the vertical direction and the horizontal direction as A whole.

The prefabricated airport pavement structure 100 provided by this application includes a base layer 1 and a surface layer 2 laid on the base layer 1. The surface layer 2 is paved with a plurality of prefabricated boards 20. The prefabricated airport pavement structure 100 uses The prefabricated technology replaces the traditional cast-in-place process, which is convenient for construction and high in construction efficiency. The prefabricated board 20 includes a main body portion 21 and a protruding portion 22 with the same thickness. Along the first direction, the main body portion 21 and the protruding portion 22 have the same length, and the protruding portion 22 is protruded on one side of the main body portion 21 . The prefabricated board 20 with the special-shaped structure has a small veneer mass and is easy to hoist. In addition, the main body parts 21 of a plurality of prefabricated boards 20 are arranged toward the base layer 1 and form a multi-row vertical prefabricated board group, and the raised portions 22 of a plurality of prefabricated boards 20 are arranged toward the base layer 1 and form a multi-row inverted prefabricated board group. Embedded in the gap formed between two adjacent rows of upright prefabricated board groups, the main body 21 of the prefabricated board 20 with the raised portion 22 facing the base 1 and the main body 21 of the precast board 20 with the main body 21 facing the base 1 21 are arranged on top of each other and fixedly connected by fasteners, so that multiple prefabricated panels 20 facing different are assembled into one, forming a surface layer 2 with the same thickness and smooth surface everywhere, and since there is no installation gap between adjacent prefabricated panels 20 , which can save multiple processes such as secondary grout, caulking, and plastering, thereby further simplifying construction steps, improving construction efficiency, and facilitating the rapid assembly of the surface layer 2. At the same time, because there is no space between adjacent prefabricated panels 20 The vertical end face can also improve the waterproof performance of the surface layer 2 and prevent the ground water from invading the base layer 1 . In addition, the use of fasteners instead of connecting structures such as dowel rods or prestressed steel bars can further simplify the structure of the prefabricated panels 20 , the installation accuracy can be easily controlled, and the problem of stress concentration at the connection of the prefabricated panels 20 caused by impact loads can be avoided. 2 The overall performance is good, not easy to damage, and high reliability.

In the prefabricated airport pavement structure 100 provided by the present application, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the protruding part 22 of the prefabricated board 20 is strip-shaped and is arranged in the middle of the main body part 21 thereof, and the prefabricated board 20 The section is T-shaped. The T-shaped prefabricated panels 20 are regular in shape, the installation precision between the prefabricated panels 20 is easy to control, and the construction is convenient. In addition, the T-shaped prefabricated plates 20 are of an axisymmetric structure, and the force is uniform, the connection between the adjacent prefabricated plates 20 is stable, and the force transmission effect between the plates is good. In other embodiments, the shape of the protruding portion 22 is not limited thereto, for example, the protruding portion 22 is Z-shaped, L-shaped, or the like.

Further, along the second direction (eg, the direction indicated by Y in FIG. 1 ), the width of the raised portion 22 of the prefabricated board 20 is 1/3 of the width of the main body portion 21 . Wherein, the second direction is a horizontal direction perpendicular to the first direction.

It can be understood that, in some embodiments, the protruding portion 22 may also be deviated from the center of the main body portion 21, so that the size of the main body portion 21 on one side of the protruding portion 22 is larger than the size of the main body portion 21 on the other side. Design according to the actual situation, which is not limited here.

In the prefabricated airport pavement structure 100 provided by the present application, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the prefabricated boards 20 arranged on top of each other are staggered by a preset distance D in the first direction, and the preset distance D is the prefabricated boards 20 is half the length L in the first direction. Specifically, both the upright prefabricated panel group and the inverted prefabricated panel group are extended along the first direction, and there is a 1/2 dislocation distribution between the prefabricated panels 20 stacked up and down. The preset distance D is staggered forward or backward in the first direction. At this time, the preset distance D is half of the length L of the prefabricated panel 20 in the first direction, and the main body 21 of each prefabricated panel 20 can be respectively connected to four The main body parts 21 of the prefabricated boards 20 are arranged on top of each other. By adopting the above-mentioned dislocation distribution structure, the connection effect of the plurality of prefabricated boards 20 is good, the overall performance of the surface layer 2 is good, the positioning of the plurality of prefabricated boards 20 is simple, and the construction is convenient.

It can be understood that in some embodiments, there may also be a 1/3 dislocation distribution between the prefabricated boards 20 arranged on top of each other, that is, the prefabricated boards 20 of the upper layer are staggered forward or backward in the first direction relative to the prefabricated boards 20 of the lower layer 1/3 of the board length, which can be designed according to the actual situation, which is not limited here.

In the prefabricated airport pavement structure 100 provided by the present application, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the main body 21 of the prefabricated board 20 is provided with a plurality of installation holes 211 , and the plurality of installation holes 211 are distributed on the protrusions. opposite sides of the portion 22 . The fasteners include high-strength bolts, and the high-strength bolts are inserted into the mounting holes 211 of the prefabricated panels 20 arranged on top of each other. The high-strength bolts are simple in structure, easy to install, and can be used in various scenarios and working conditions. In addition, by using high-strength bolts to connect the prefabricated panels 20 arranged on top of each other and dislocated, the connection of the prefabricated panels 20 in the vertical direction and the horizontal direction can be realized, and the high-strength bolts can bear a relatively small horizontal load, so that the prefabricated panels 20 It can resist relatively large vertical impact loads, thereby improving the reliability of the surface layer 2.

Optionally, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the main body 21 of the prefabricated board 20 is provided with four mounting holes 211 , and the four mounting holes 211 are distributed at the four corners of the main body 21 for connecting with a The prefabricated panels 20 are four prefabricated panels 20 arranged on top of each other.

In the prefabricated airport pavement structure 100 provided by the present application, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the mounting hole 211 includes a fixed part 2111 and a connecting part 2112 which are connected in communication, and the fixed part 2111 is located on the main body part 21 away from the protrusion On one side of the part 22, the diameter of the fixing part 2111 is larger than that of the connecting part 2112, and a stepped surface 2113 is formed near the opening. The fastener also includes a nut adapted to the high-strength bolt. The head of the high-strength bolt is arranged in the mounting hole 211 of the main body portion 21 close to the prefabricated plate 20 of the base layer 1 (ie, the lower prefabricated plate 20 ), and abuts against the corresponding step. On the surface 2113, the nut is installed on the free end of the high-strength bolt, and the nut is arranged in the installation hole 211 of the main body 21 away from the prefabricated plate 20 of the base layer 1 (ie, the upper prefabricated plate 20), and abuts on the corresponding stepped surface 2113. During construction, the high-strength bolts are firstly inserted into the installation holes 211 of the lower prefabricated board 20, and then the upper prefabricated board 20 is installed in a preset position, and the mounting holes 211 of the upper prefabricated board 20 are aligned with the high-strength bolts, and then the nuts are installed. Installed on high-strength bolts. The above-mentioned high-strength bolts have a reasonable installation method, are convenient to construct, and are easy to maintain, which are beneficial to realize the rapid assembly of the surface layer 2 . In addition, the high-strength bolts are used in conjunction with nuts, which have the function of fine-tuning and leveling. By adjusting the connection between the high-strength bolts and the nuts, multiple prefabricated boards 20 can be fixed to a uniform height, thereby keeping the surface of the surface layer 2 flat and improving the flatness of the surface layer 2.

Further, the length of the high-strength bolt is not more than twice the thickness of the main body 21 of the prefabricated plate 20 , and the top elevation of the nut is flush with the top elevation of the surface layer 2 . To ensure the nut installation effect, in some embodiments, the fastener further includes a backing plate.

In the prefabricated airport pavement structure 100 provided by the present application, the diameter of the connecting portion 2112 of the mounting hole 211 is larger than the diameter of the high-strength bolt. Specifically, in order to reduce the assembly difficulty of the prefabricated board 20 , when designing the mounting hole 211 , the mounting hole 211 may be reamed according to the installation accuracy of the prefabricated board 20 .

In the prefabricated airport pavement structure 100 provided in the present application, concrete is poured into the fixing portion 2111 of the mounting hole 211 where the nut is located. Pouring concrete into the fixing portion 2111 of the installation hole 211 can fill the installation hole 211 of the upper prefabricated board 20 to keep the surface of the surface layer 2 flat to ensure the flatness of the surface layer 2 . In addition, pouring concrete can also improve the connection and fixing effect of the fasteners, thereby improving the connection effect between the prefabricated panels 20 arranged on top of each other. In addition, the vertical grouting of concrete has simple operation, less grouting workload, and the concrete is more compact under the action of gravity, and the prefabricated plate 20 bears better force.

It can be understood that, in some embodiments, the prefabricated panels 20 arranged on top of each other may also be connected by steel bars, connecting nails or pouring concrete, which may be designed according to actual conditions, which is not limited herein.

In the prefabricated airport pavement structure 100 provided by the present application, a waterproof layer is provided on the side of the main body portion 21 of the prefabricated board 20 facing the raised portion 22 . By filling the waterproof layer, the waterproof effect between the prefabricated boards 20 arranged on top of each other can be improved, thereby further improving the waterproof ability of the surface layer 2 and effectively preventing ground water such as rainwater from invading the base layer 1 .

Further, the waterproof layer is mortar or leather pad.

Optionally, in an embodiment, the waterproof layer is mortar. Due to the limitation of the processing level, the surface of the finished prefabricated board 20 is easy to form pits. Applying mortar on the surface of the precast board 20 can fill in the pits and improve the surface flatness of the precast board 20, so as to improve the surface of the prefabricated board 20. The flatness of the veneer between the prefabricated boards 20 makes the prefabricated boards 20 arranged on top of each other tightly connected, so as to solve the problem of mutual gnawing between the prefabricated boards 20 and improve the waterproof effect of the prefabricated boards 20 .

Optionally, in an embodiment, the waterproof layer is a leather pad. The use of the leather pad can improve the flatness of the veneer between the prefabricated boards 20 arranged on top of each other, so that the stacked prefabricated boards 20 are closely connected, and the leather pad has a certain anti-seepage effect, so that the waterproof effect of the prefabricated boards 20 can be effectively improved.

To sum up, the prefabricated airport pavement structure 100 provided by the present application can reduce the mass of a single prefabricated panel 20 by improving the structure of the prefabricated panel 20 itself, thereby making it easier to hoist. Further, by improving the connection structure between the prefabricated panels 20, and using high-strength bolts to connect the prefabricated panels 20 that are arranged on top of each other, multiple processes such as secondary grout filling, caulking, and surface plastering can be omitted, thereby reducing the difficulty of pavement construction. Simplify the construction steps, improve the construction efficiency, and at the same time, it can also improve the force transmission effect between the plates and the stability of the surface layer 2. Further, by improving the installation method between the prefabricated panels 20, the main body parts 21 of the upper and lower prefabricated panels 20 are placed on top of each other, and a waterproof layer such as mortar or leather pad is added between the horizontal contact surfaces of the upper and lower prefabricated panels 20, which can improve the performance of the prefabricated panels 20. The waterproof ability of the surface layer 2 can effectively prevent the ground water such as rainwater from invading the base layer 1.

In the second aspect, as shown in FIG. 1 and FIG. 5 , the present application further provides a construction method of a prefabricated airport pavement structure for laying the prefabricated airport pavement structure 100 .

As shown in Figure 1, Figure 3 and Figure 5, the construction method includes the following steps:

S100 , laying the base layer 1 .

Including treating the soil foundation 11, laying a cushion layer 12 and a water stabilization layer 13 on the soil foundation 11 in sequence. Use a paver to spread the base 1 and make the flatness and compaction of the base 1 meet the design requirements.

S200 , laying multiple rows of upright prefabricated panel groups on the base layer 1 to form a gap between two adjacent rows of upright prefabricated panel groups, wherein the main body 21 of the prefabricated panels 20 of the upright prefabricated panel group is disposed toward the base layer 1 .

Specifically, the field road is divided into a plurality of construction sections along the first direction, and each construction section is equipped with a gantry crane; then, high-strength bolts are inserted into the installation holes 211 of the prefabricated panels 20, and the gantry cranes are used to assemble the plurality of prefabricated panels 20. The main body portion 21 is placed on the base layer 1 downward, and multiple rows of upright prefabricated board groups extending along the first direction are formed on the base layer 1 , and the multiple rows of upright prefabricated board groups are arranged in parallel and at intervals.

Wherein, the size of the gap formed between two adjacent rows of erected prefabricated panel groups is adapted to the size of the prefabricated panel 20 . In the embodiment of the present application, the gap between the main body parts 21 of the prefabricated panels 20 of two adjacent rows of erected prefabricated panel groups is L ₁ , the dimension of the protruding part 22 of the prefabricated panels 20 in the second direction is L ₂ , and the prefabricated panel 20 has a dimension L 2 . The installation error of the board 20 is L ₃ , which is defined as L ₁ =L ₂ +L ₃ .

Further, in order to easily adjust the gap size between the two adjacent rows of upright prefabricated panel groups and reduce the difficulty of construction, the alignment device used to fix the interval can be welded by using the steel frame. During the laying process, the alignment device is placed in a row. On one side of the upright prefabricated panel group that has been laid, after determining the size of the gap, lay adjacent upright prefabricated panel groups in sequence.

S300, laying multiple rows of inverted prefabricated panel groups on the base layer 1, so that the inverted prefabricated panel groups are embedded in the gap formed between two adjacent rows of upright prefabricated panel groups, and the prefabricated panels 20 of the upright prefabricated panel group are connected to The prefabricated panels 20 of the inverted prefabricated panel group are distributed in dislocation, wherein the raised portions 22 of the prefabricated panels 20 of the inverted prefabricated panel group are disposed toward the base layer 1 .

Specifically, a gantry crane is used to place the protruding parts 22 of the plurality of prefabricated panels 20 at a predetermined position on the base layer 1 downward, so that the prefabricated panels 20 are embedded in the gaps between the multiple rows of upright precast panel groups, and are placed on the base layer. 1, a plurality of rows of inverted prefabricated panels extending along the first direction are formed.

During the laying process, the mounting holes 211 of the prefabricated panels 20 to be laid on the upper layer are aligned with the high-strength bolts on the prefabricated panels 20 already laid on the lower layer, and the prefabricated panels 20 arranged on top of each other are dislocated. In the embodiment of the present application, the prefabricated boards 20 that are stacked on top of each other have a dislocation distribution of 1/2 the length of the prefabricated boards 20 in the first direction, and the prefabricated boards 20 on the upper layer are forward or backward relative to the prefabricated boards 20 on the lower layer in the first direction. The preset distance is staggered backward, and the preset distance is half of the length of the prefabricated board 20 in the first direction.

S400 , installing fasteners, so that the fasteners are connected to the prefabricated boards 20 arranged on top of each other.

It should be noted that the fastener includes a high-strength bolt and a nut, and installing the fastener means assembling the nut on the free end of the high-strength bolt.

The construction method of the prefabricated airport pavement structure provided by the present application includes laying a base layer 1, laying an upright prefabricated panel group on the base layer 1, laying an inverted prefabricated panel group on the base layer 1, and installing fasteners. The plate group and the inverted prefabricated plate group include a plurality of prefabricated plates 20 with different laying directions, and each row of the inverted prefabricated plate group is embedded in the gap between the adjacent two rows of the upright prefabricated plate group to form the same thickness everywhere. Surface layer 2 with a flat surface, the above construction method uses the assembly technology to replace the traditional cast-in-place process, and uses the fastener to replace the dowel bar connection structure between the plates, avoiding the secondary grouting, caulking, plastering and other processes. It can reduce the difficulty of construction, simplify the construction steps, and improve the construction efficiency, which is beneficial to realize the rapid assembly of the surface layer 2 and the rapid installation of the prefabricated airport pavement structure 100, and can lay out the assembly of the surface layer 2 with a stable structure and good waterproof effect. type airport pavement structure 100.

In the construction method of the prefabricated airport pavement structure provided by the present application, in order to improve the connection and fixing effect of the fasteners and improve the surface flatness of the surface layer 2, after step S400, the construction method further includes: prefabricating an inverted prefabricated panel group Concrete is poured into the mounting holes 211 of the plate 20 .

Specifically, concrete is poured into the mounting holes 211 of the prefabricated panels 20 with the raised portions 22 facing the base layer 1 , so that the concrete fills the fixing portions 2111 of the mounting holes 211 and the surfaces of the prefabricated panels 20 are kept flat.

In the construction method of the prefabricated airport pavement structure provided by the present application, in order to improve the waterproof effect between the prefabricated boards 20 arranged on top of each other and the waterproof ability of the surface layer 2, before step S300, the construction method further includes: The surface of the main body portion 21 of the prefabricated board 20 facing the protruding portion 22 is filled with waterproof material.

Specifically, the main body portion 21 of the prefabricated board 20 is filled with a waterproof material, so that the waterproof material fills the dimples on the surface of the prefabricated board 20 . Optionally, the waterproof material can be mortar or leather pad.

To sum up, the construction method of the prefabricated airport pavement structure provided by this application uses prefabricated technology to replace the traditional cast-in-place process, has high construction efficiency, short construction period, and can lay out the prefabricated surface layer 2 with stable structure and good waterproof effect. Airport pavement structure 100 .

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that: it can still be used for the above-mentioned implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the application, and should be included in the within the scope of protection of this application.

Claims (10)

1. An assembled airport pavement structure comprises a base layer and a surface layer laid on the base layer, and is characterized in that the surface layer comprises a plurality of prefabricated plates and fasteners, each prefabricated plate comprises a main body part and a protruding part, the main body part and the protruding part are the same in thickness, the length of the main body part and the length of the protruding part in a first direction are the same, and the protruding part is protruded on one side of the main body part;

the main body parts of the prefabricated plates are arranged towards the base layer and form a plurality of columns of upright prefabricated plate groups, the upright prefabricated plate groups extend along a first direction, and a gap is formed between every two adjacent columns of upright prefabricated plate groups;

the protrusions of the plurality of prefabricated panels are arranged towards the base layer and form a plurality of columns of inverted prefabricated panel groups, the inverted prefabricated panel groups extend along a first direction, and the inverted prefabricated panel groups are embedded in the gaps formed by two adjacent columns of the upright prefabricated panel groups;

the prefabricated plates which are arranged in an overlapped mode are distributed in a staggered mode along a first direction, and the fastening pieces are connected with the main body parts of the prefabricated plates which are arranged in an overlapped mode.

2. The fabricated airport pavement structure of claim 1, wherein the protruding portion of the prefabricated panel is bar-shaped and disposed at a middle portion of the main body, and the prefabricated panel has a T-shaped cross-section.

3. The fabricated airport pavement structure of claim 1, wherein the prefabricated panels arranged one above another are staggered in a first direction by a preset distance that is half the length of the prefabricated panels in the first direction.

4. The fabricated airport pavement structure of any of claims 1-3, wherein the main body portion of the prefabricated slab is provided with a plurality of mounting holes, the plurality of mounting holes being distributed on opposite sides of the protrusion portion; the fastening piece comprises a high-strength bolt, and the high-strength bolt penetrates through the mounting holes of the prefabricated plates which are arranged in an overlapped mode.

5. The fabricated airport pavement structure of claim 4, wherein the mounting holes comprise a fastening portion and a connecting portion in communication, the fastening portion is located on a side of the main body portion facing away from the protruding portion, the fastening portion has a larger bore diameter than the connecting portion and forms a stepped surface at the location of the opening;

the fastener still include with the nut of high strength bolt adaptation, the head of high strength bolt set up in the main part is close to the basic unit in the mounting hole of prefabricated plate to support in corresponding on the ladder face, the nut install in the free end of high strength bolt, the nut set up in the main part is kept away from the basic unit in the mounting hole of prefabricated plate, and support in corresponding on the ladder face.

6. The fabricated airport pavement structure of claim 5, wherein the anchoring portion in which the nut is located is impregnated with concrete.

7. The fabricated airfield pavement structure of claim 5, wherein the connecting portion of the installation hole has a diameter larger than a diameter of the high-strength bolt.

8. The fabricated airport pavement structure of any of claims 1 to 3, wherein a side of the main body portion of the prefabricated slab facing the protrusion is provided with a waterproof layer.

9. The fabricated airport pavement structure of claim 8, wherein the waterproof layer is mortar or leather mat.

10. A construction method of a fabricated airport pavement structure for laying a fabricated airport pavement structure according to any one of claims 1 to 9, comprising:

laying a base layer;

laying a plurality of columns of upright prefabricated plate groups on the base layer to form a gap between two adjacent columns of upright prefabricated plate groups, wherein main body parts of prefabricated plates of the upright prefabricated plate groups are arranged towards the base layer;

laying a plurality of columns of inverted prefabricated plate groups on the base layer, embedding the inverted prefabricated plate groups in the gap formed by two adjacent columns of upright prefabricated plate groups, and distributing the prefabricated plates of the upright prefabricated plate groups and the prefabricated plates of the inverted prefabricated plate groups in a staggered manner, wherein the convex parts of the prefabricated plates of the inverted prefabricated plate groups face the base layer;

and installing a fastener, so that the fastener is connected with the prefabricated plates which are arranged in an overlapped mode.

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