An assembled runway structure for an island reef airport and its construction method

Abstract

The present invention provides an assembled runway structure for an island reef airport and a construction method thereof. Among them, the runway structure includes an anti-settlement foundation layer, a detachable composite energy-absorbing structure layer, a detachable support structure layer, and an asphalt pavement layer. The anti-settlement foundation layer is buried in the foundation of the preset runway construction position; the detachable composite energy-absorbing structure layer and the detachable support structure layer are both arranged on the upper surface of the foundation along the runway direction; the detachable support structure layer includes detachable support seats arranged in parallel at both ends of the detachable composite energy-absorbing structure layer and detachably connected to both ends of the detachable composite energy-absorbing structure layer respectively, and a plurality of prestressing components that penetrate into the detachable composite energy-absorbing structure layer and apply prestress to the detachable composite energy-absorbing structure layer; the asphalt pavement layer is laid on the upper surface of the detachable composite energy-absorbing structure layer and forms a three-dimensional fiber network. The solution provided by the present invention improves the speed, service life, impact resistance, and passive strike resistance of the runway integrated assembly construction of the island reef airport.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea and far - sea island building engineering, and particularly to an assembled runway structure for an island - reef airport and a construction method thereof. Background Art

[0002] In the construction of deep - sea and far - sea island reefs, since deep - sea and far - sea island reefs are far from the land, airports have become important transportation hubs between island reefs and the land. Currently, since artificial island reefs are mainly constructed by methods such as reclamation of coral sand, the runways of island - reef airports are uneven and have large settlements, and the construction lags seriously, unable to meet the current rapid development needs. In addition, due to the significant military - strategic significance of deep - sea and far - sea island reefs, deep - sea and far - sea island reefs have gradually become the primary targets in military struggles, posing more stringent requirements for the rapid construction and improvement of the protection ability of island - reef runways. According to the existing environmental conditions of island reefs, to ensure the combat - effective strength in wartime, it is imperative to study the simplicity and improvement of the protection performance of deep - sea and far - sea island - reef airport runways.

[0003] Currently, the construction of traditional deep - sea and far - sea island - reef airports still mainly uses traditional cast - in - place reinforced concrete. Although this method can build airport runways that meet the take - off and landing of aircraft, there are still problems such as uneven runway settlement, complex construction and maintenance, inability to quickly respond to wartime conditions, resulting in problems of timeliness and safety. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an assembled runway structure for an island - reef airport and a construction method thereof, so as to realize the rapid integrated assembly construction of the island - reef airport runway and improve the overall impact resistance and service life of the island - reef airport runway structure.

[0005] To solve the above - mentioned technical problems, the technical solution of the present invention is as follows:

[0006] An assembled runway structure for an island - reef airport, comprising:

[0007] A settlement - proof base layer, which is buried in the foundation of a preset runway construction position;

[0008] A detachable support structure layer, which includes detachable support seats arranged in parallel and a plurality of prestressing components. The detachable support seats arranged in parallel are arranged on the settlement - proof base layer along the runway direction, and the plurality of prestressing components are arranged between the detachable support seats arranged in parallel;

[0009] A detachable composite energy - absorbing structure layer, which is arranged between the detachable support seats arranged in parallel and is detachably connected to the detachable support seats at both ends. The prestressing components penetrate into the reserved holes arranged on the detachable composite energy - absorbing structure layer and apply prestress to the detachable composite energy - absorbing structure layer; and

[0010] An asphalt road surface layer is laid on the detachable composite energy-absorbing structure layer, and a three-dimensional fiber mesh is formed on the upper surface of the detachable composite energy-absorbing structure layer and evenly distributed in the voids of the detachable composite energy-absorbing structure layer.

[0011] In one embodiment, the anti-settlement foundation layer includes a plurality of long friction piles and a plurality of short friction piles, and the plurality of long friction piles and the plurality of short friction piles are alternately arranged and buried in the foundation in an array form.

[0012] In one embodiment, each of the detachable support seats arranged in parallel includes a plurality of bases, and the plurality of bases are linearly distributed and are detachably connected to each other between adjacent bases to form a detachable support seat.

[0013] In one embodiment, two groups of mounting holes are provided in the upper part of the base, the two groups of mounting holes are symmetrically arranged up and down, and each group of mounting holes includes a plurality of precast prestressed tendon holes, and the precast prestressed tendon holes correspond to the prestressing components one by one;

[0014] Two insertion slots arranged in parallel are respectively provided on both sides of the lower part of the base, and a limiting column is arranged between the two insertion slots arranged in parallel on each side.

[0015] In one embodiment, the prestressing component includes prestressed steel strands and anchor bolt components. The prestressed steel strands penetrate into the precast prestressed tendon holes and the reserved holes provided on the detachable composite energy-absorbing structure layer, and prestress is applied to the detachable composite energy-absorbing structure layer by the anchor bolt components at both ends of the prestressed steel strands and the detachable composite energy-absorbing structure layer is supported between the detachable support seats arranged in parallel.

[0016] In one embodiment, the detachable composite energy-absorbing structure layer includes:

[0017] A first precast concrete slab, and both ends of the first precast concrete slab are detachably connected to adjacent and parallel bases;

[0018] An energy-absorbing material precast slab, which is laid on the upper surface of the first precast concrete slab and both ends of the energy-absorbing material precast slab are respectively limited between adjacent and parallel bases; and

[0019] A second precast concrete slab, which is laid on the upper surface of the energy-absorbing material precast slab and both ends of the second precast concrete slab are respectively limited between adjacent and parallel bases.

[0020] In one embodiment, the first precast concrete slab includes a support panel and two friction plates symmetrically arranged on the lower surface of the support panel.

[0021] In one embodiment, the energy-absorbing material precast slab is made of a polymer polyurethane material.

[0022] In one embodiment, the asphalt pavement surface layer is made of asphalt material prepared with an asphalt modifier of a preset viscosity and is formed by mixing and paving through a production unit.

[0023] A construction method for an assembled runway structure of an island reef airport includes the following steps:

[0024] Alternately bury a plurality of long friction piles and a plurality of short friction piles in the foundation of a preset runway construction position in the anti-settlement base layer;

[0025] Lay out the pedestals in the detachable support structure layer along the runway direction at a predetermined position according to the preset size of the runway, lift the pedestals by the lifting lugs welded to the tops of the pedestals, and assemble them into the detachable support structure layer arranged in parallel. The detachable support structure layer arranged in parallel forms a limiting device for the overall runway foundation;

[0026] Lift the first precast concrete slab in the detachable composite energy-absorbing structure layer above the detachable support structure layer, insert the first precast concrete slab into the insertion slots of the pedestals through assembly compaction, and sleeve the limiting columns of the pedestals with the first assembly limiting holes on the first precast concrete slab;

[0027] Pass the prestressed steel strands of the prestressing assembly in the detachable support structure layer through the first reserved holes on the first precast concrete slab, and apply a first prestress to the first precast concrete slab at both ends in cooperation with the anchor bolt assembly;

[0028] Assemble the energy-absorbing material precast slab in the detachable composite energy-absorbing structure layer onto the upper surface of the first precast concrete slab through hoisting, and sleeve the limiting columns of the pedestals with the third assembly limiting holes on the energy-absorbing material precast slab;

[0029] Assemble the second precast concrete slab in the detachable composite energy-absorbing structure layer onto the upper surface of the energy-absorbing material precast slab through hoisting, and sleeve the limiting columns of the pedestals with the second assembly limiting holes on the second precast concrete slab;

[0030] Pass the prestressing strands through the second reserved holes on the second precast concrete slab, and apply a second prestress to the second precast concrete slab at both ends in cooperation with the anchor bolt assembly;

[0031] Lay the asphalt pavement surface layer on the upper surface of the second precast concrete slab.

[0032] The above solution of the present invention has at least the following beneficial effects:

[0033] 1. The foundation is reinforced by using long and short friction piles to reduce the settlement of the foundation.

[0034] 2. The original pure concrete runway structure foundation is replaced by a detachable composite energy-absorbing structure layer, making the entire runway have good impact resistance, elastic recovery, durability, light weight and easy installation, etc., improving the overall performance of the runway; at the same time, it can also realize the rapid splicing and installation of the runway structure, facilitating the installation, disassembly, construction and later maintenance and replacement of the bunker.

[0035] 3. The detachable composite energy-absorbing structure layer is installed and limited by the prestress component in the detachable support structure layer, and prestress is applied to resist the real-time impact load of the runway during aircraft takeoff and landing, improving the overall mechanical performance of the runway structure.

[0036] 4. A modified asphalt surface layer is laid on the top of the overall runway structure to enhance the overall impact resistance and flexible self-recovery ability of the runway structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic diagram of the overall structure of the prefabricated runway structure provided by an embodiment of the present invention;

[0038] Figure 2 is a three-dimensional structure diagram of the settlement prevention foundation layer provided by an optional embodiment of the present invention;

[0039] Figure 3 is a three-dimensional structure diagram of the first precast concrete slab provided by an optional embodiment of the present invention;

[0040] Figure 4 is a three-dimensional structure diagram of the detachable support structure layer provided by an optional embodiment of the present invention;

[0041] Figure 5 is a three-dimensional structure diagram of the detachable composite energy-absorbing structure layer provided by an optional embodiment of the present invention;

[0042] Figure 6 is a three-dimensional structure diagram of the first precast concrete slab assembled on the base provided by an optional embodiment of the present invention;

[0043] Figure 7 is a three-dimensional structure diagram of the energy-absorbing material precast slab and the second precast concrete slab assembled on the base provided by an optional embodiment of the present invention;

[0044] Figure 8 is a three-dimensional structure diagram of the asphalt surface layer provided by an optional embodiment of the present invention.

[0045] Description of the attached drawing reference numerals:

[0046] 100, prefabricated runway structure of an island reef airport; 1, long friction pile; 2, short friction pile; 3, foundation; 4, pedestal; 5, first precast concrete slab; 51, support panel; 52, friction plate; 6, energy-absorbing material precast slab; 7, second precast concrete slab; 8, limit column; 9, lifting lug; 10, prestressed steel strand; 11, insertion groove; 12, asphalt pavement layer; 13, prefabricated prestressed tendon hole; 14, first assembly limit hole; 15, first reserved hole; 16, second assembly limit hole; 17, second reserved hole. Detailed implementation manners

[0047] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0048] In the description of the present invention, it should be understood that the terms "including / containing", "consisting of..." or any other variants thereof are intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements not only includes those elements, but may also include other elements not explicitly listed when necessary, or further includes elements inherent to such product, device, process or method. Without further limitation, the elements defined by the statements "including / containing...", "consisting of..." do not exclude the existence of additional identical elements in the product, device, process or method including the said elements.

[0049] It should also be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of the present invention.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined by "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0051] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] As Figure 1 shown, an assembled runway structure 100 for an island reef airport according to an embodiment of the present invention includes a settlement-proof foundation layer, a detachable composite energy-absorbing structure layer, a detachable support structure layer, and an asphalt pavement layer 12. Among them, the settlement-proof foundation layer is buried in the foundation 3 at a preset runway construction position. The detachable support structure layer includes parallel detachable support seats and a plurality of prestressing components. The parallel detachable support seats are arranged along the runway direction on the upper surface of the foundation 3, and the plurality of prestressing components are arranged between the parallel detachable support seats. The detachable composite energy-absorbing structure layer is arranged between the parallel detachable support seats, and both ends of the detachable composite energy-absorbing structure layer are detachably connected to the detachable support seats. The prestressing components penetrate into the reserved holes provided in the detachable composite energy-absorbing structure layer and apply prestress to the detachable composite energy-absorbing structure layer. The asphalt pavement layer 12 is laid on the upper surface of the detachable composite energy-absorbing structure layer. During the mixing and laying process of the production unit, a three-dimensional fiber network is formed on the upper surface of the detachable composite energy-absorbing structure layer and is evenly distributed in the gaps of the detachable composite energy-absorbing structure layer.

[0053] In this embodiment, the settlement-proof foundation layer, the detachable composite energy-absorbing structure layer, the detachable support structure layer, and the asphalt pavement layer 12 are all arranged along the runway direction, and the specific sizes of each layer can be set according to the construction requirements of the island reef runway; among them, the settlement-proof foundation layer can be pre-buried in the coral sand or soft foundation 3 at the runway construction position through a foundation treatment procedure to reduce the settlement amount of the foundation;

[0054] The detachable composite energy-absorbing structure layer is limited by the detachable support structure layer and is detachably installed on the upper surface of the foundation 3. When designing the runway structure, it is not necessary to consider the concrete shrinkage and expansion effects of the cast-in-place runway, and the rapid disassembly and installation of the runway structure can be realized, which is convenient for the installation and disassembly of the bunker, as well as construction and later maintenance and replacement; here, by replacing the pure concrete structure of the original runway structure with the detachable composite energy-absorbing structure layer, the runway structure has good impact resistance and elastic recovery performance, thereby improving the overall performance of the runway structure;

[0055] The detachable support structure layer is arranged at a predetermined position of the foundation 3 according to a preset size to form a limiting device for the overall runway structure, facilitating the subsequent installation and laying of the detachable composite energy-absorbing structure layer and the asphalt pavement layer 12; here, the detachable support seats in the detachable support structure layer are arranged on both sides of the detachable composite energy-absorbing structure layer along the runway direction and relatively parallel at both ends to achieve the limiting and positioning effects on the detachable composite energy-absorbing structure layer; the prestressing components in the detachable support structure layer penetrate through the detachable composite energy-absorbing structure layer, and both ends of the prestressing components are screwed and fixed to the detachable support seats respectively. When installing the prestressing components, a certain amount of prestress can be provided for the detachable composite energy-absorbing structure layer through the prestressing components to resist the real-time impact load of the runway structure during aircraft takeoff and landing, improve the mechanical properties of the detachable composite energy-absorbing structure layer, and at the same time, it can also meet the real-time disassembly, installation and maintenance requirements of the runway structure. Here, the distance between adjacent detachable support seats, the number and size of the detachable support seats can be set according to the size design requirements of the runway during actual construction, as long as adjacent two detachable support seats are arranged parallel along the runway direction;

[0056] Here, the asphalt pavement layer is laid on the upper surface of the detachable composite energy-absorbing structure layer. As Figure 8 shown, in an alternative embodiment of the present invention, the asphalt pavement layer 12 is a special modified asphalt pavement layer, which is made of asphalt materials produced by a new type of medium-high viscosity asphalt modifier and is mixed and laid by a production unit; the laying of the asphalt pavement layer 12 can, on the one hand, ensure the flatness of the runway structure, and on the other hand, the asphalt materials made of asphalt modifiers with a preset viscosity can be drawn into a three-dimensional fiber network at the microscopic level during the mixing process of the production unit and are evenly distributed into the voids of the detachable composite energy-absorbing structure layer serving as the road surface, improving the forming strength of the asphalt mixture, playing a role in stabilizing the structure and restoring deformation, and further increasing the flexibility and impact resistance of the runway structure.

[0057] As Figure 2 shown, in an alternative embodiment of the present invention, the anti-settlement foundation layer includes a plurality of long friction piles 1 and a plurality of short friction piles 2, and the plurality of long friction piles 1 and the plurality of short friction piles 2 are alternately arranged and buried in the foundation 3 in an array form.

[0058] In this embodiment, the plurality of long friction piles 1 and the plurality of short friction piles 2 are alternately arranged and buried in the foundation 3 in an array form, and combined with the bottom structure (i.e., the short friction plate 52) of the detachable composite energy-absorbing structure layer, the friction between the lower structure (i.e., the short friction plate 52) of the runway structure and the foundation 3 can be fully increased, thereby reducing the settlement amount of the runway.

[0059] As Figure 4As shown, in an alternative embodiment of the present invention, each of the detachable support seats arranged in parallel includes a plurality of bases 4. The plurality of bases 4 are linearly distributed and are detachably connected between adjacent two bases to form a detachable support seat.

[0060] In this embodiment, the plurality of bases 4 in the same detachable support seat are arranged in sequence along the runway direction, and are detachably connected between adjacent two bases 4 by plugging, so as to realize the installation and disassembly of the detachable support seat; the plurality of bases 4 in adjacent two detachable support seats are in one-to-one correspondence and are arranged in parallel, so as to form a limiting device for the overall runway structure, and at the same time realize the limiting and installation of both ends of the detachable composite energy-absorbing structure layer.

[0061] As Figure 4 shown, in an alternative embodiment of the present invention, two groups of mounting holes are opened in the upper part of the base 4. The two groups of mounting holes are symmetrically arranged up and down, and each of the two groups of mounting holes includes a plurality of precast prestressed tendon holes 13. The precast prestressed tendon holes 13 correspond to the prestressing components one by one; two parallel plugging grooves 11 are respectively opened on both sides of the lower part of the base 4, and a limiting column 8 is arranged between the two parallel plugging grooves 11 arranged in parallel on each side.

[0062] In this embodiment, the base 4 is a convex-shaped structure. Two groups of mounting holes are opened in the upper part of the convex-shaped base 4 along the direction perpendicular to the runway. Each group of mounting holes includes a plurality of precast prestressed tendon holes 13 evenly distributed along the runway direction for the articulated components to pass through; the two groups of mounting holes are symmetrically arranged up and down, and the two groups of mounting holes respectively correspond to different levels in the detachable composite energy-absorbing structure layer, so as to cooperate with the prestressing components to support different levels in the detachable composite energy-absorbing structure layer on the foundation 3 and provide corresponding prestress for different levels to resist the real-time impact load on the runway structure during the takeoff and landing of the aircraft, improve the mechanical properties of the detachable composite energy-absorbing structure layer, and further improve the impact resistance of the runway structure; here, the distance between the two groups of mounting holes can be set according to actual needs;

[0063] On each side of the lower part of the convex-shaped base 4, two parallel plugging grooves 11 are opened along the direction perpendicular to the runway. The two parallel plugging grooves on both sides are symmetrically arranged with respect to the mounting holes, so as to facilitate the installation and disassembly of the bottom of the detachable composite energy-absorbing structure layer; here, at least one limiting column 8 is arranged between the two parallel plugging grooves 11 on each side, so as to facilitate the guiding and limiting during the installation of the detachable composite energy-absorbing structure layer;

[0064] Preferably, a lifting lug 9 can be welded to the top of the convex-shaped base 4, so as to facilitate lifting and assembling into a detachable support seat in a flat package.

[0065] As Figure 4As shown, in an alternative embodiment of the present invention, the prestressed component includes prestressed steel strands 10 and anchor bolt assemblies. The prestressed steel strands 10 penetrate into the prefabricated prestressed tendon holes 13 and the reserved holes provided on the detachable composite energy-absorbing structure layer. At both ends of the prestressed steel strands 10, the anchor bolt assemblies are cooperated to apply prestress to the detachable composite energy-absorbing structure layer and support the detachable composite energy-absorbing structure layer between the parallel detachable support seats.

[0066] When installing the runway structure, one end of the prestressed steel strand 10 penetrates into the reserved hole of the corresponding layer of the detachable composite energy-absorbing structure layer through the prefabricated prestressed tendon hole 13 on the base 4 at one end of the detachable composite energy-absorbing structure layer, and passes out from the prefabricated prestressed tendon hole 13 on the base 4 at one end of the detachable composite energy-absorbing structure layer. And both ends of the prestressed steel strand 10 are respectively fixed to the outside of the two bases 4 arranged in parallel at both ends of the detachable composite energy-absorbing structure layer through the anchor bolt assemblies; through the cooperation of the prestressed steel strand 10 and the anchor bolt assemblies, corresponding prestress is provided for different layers in the detachable composite energy-absorbing structure layer to resist the real-time impact load on the runway structure during the takeoff and landing of the aircraft, improve the mechanical properties of the detachable composite energy-absorbing structure layer, and further improve the impact resistance of the runway structure; here, the length of the prestressed steel strand can be set according to the specific requirements of the runway design dimensions.

[0067] As Figure 5 shown, in an alternative embodiment of the present invention, the detachable composite energy-absorbing structure layer includes a first concrete precast slab 5, an energy-absorbing material precast slab 6, and a second concrete precast slab 7. Among them, both ends of the first concrete precast slab 5 are detachably connected to the adjacent and parallel bases 4 respectively; the energy-absorbing material precast slab 6 is laid on the upper surface of the first concrete precast slab 5, and both ends of the energy-absorbing material precast slab 6 are respectively limited between the adjacent and parallel bases 4; the second concrete precast slab 7 is laid on the upper surface of the energy-absorbing material precast slab 6, and both ends of the second concrete precast slab 7 are respectively limited between the adjacent and parallel bases 4.

[0068] In this embodiment, the first concrete precast slab 5, the energy-absorbing material precast slab 6, and the second concrete precast slab 7 are arranged in sequence from bottom to top; by designing the pure concrete runway foundation in the existing runway as a detachable composite energy-absorbing structure layer containing flexible energy-absorbing materials, the overall runway structure has the advantages of good impact resistance, elastic recovery, durability, light weight and easy installation, etc., improving the overall performance of the runway.

[0069] As Figure 3 shown, in an alternative embodiment of the present invention, the first concrete precast slab 5 includes a support panel 51 and two friction plates 52 symmetrically arranged on the lower surface of the support panel 51; preferably, the support panel 51 and the two friction plates 52 can be integrally formed. As Figure 6As shown, the distance between the two friction plates 52 matches the distance between the two parallel insertion slots 11 on the base 4; when installing the detachable composite energy-absorbing structure layer, the two ends of the two friction plates 52 in the first concrete precast slab 5 are respectively inserted into the two parallel insertion slots 11 on one side of the two parallel bases 4 through assembly compaction, so as to support the entire support panel 51 on the lower part of the base 4, enabling the support panel 51 to reduce the settlement of the upper cushion while bearing the upper load.

[0070] Preferably, a first reserved hole 15 is formed in the support panel 51 along the direction perpendicular to the runway, and the first reserved hole penetrates through the entire support panel 51 for the prestressed steel strand 10 to penetrate. At the same time, after the prestressed steel strand 10 penetrates into the support panel 51, the first prestress can be applied to the support panel 51 in cooperation with the anchor bolt assembly, so as to improve the mechanical properties of the first concrete precast slab 5, and further resist the real-time impact load on the runway during the takeoff and landing of the aircraft, thereby improving the overall impact resistance of the runway structure.

[0071] Here, the number and size of the first reserved holes 15 correspond one by one to the number and size of the precast prestressed tendon holes 13 located on the lower side in the two groups of installation holes on the base 4, and their heights are the same to ensure the stability of the installation of the first concrete precast slab 5; more preferably, a first assembly limit hole 14 is respectively formed at both ends of the support panel 51, and the sizes and positions of the two first assembly limit holes 14 correspond to the sizes and positions of the limit columns 8 on the two parallel bases 4 at both ends of the support panel 51. The installation of the first concrete precast slab 5 is guided and limited through the cooperation of the first assembly limit hole 14 and the limit column 8.

[0072] Refer to Figures 5 to 7 , the second concrete precast slab 7 is a flat plate, and the second concrete precast slab 7 is made of the same material as the first concrete precast slab 5. Preferably, a second reserved hole 17 is formed in the second concrete precast slab 7 along the direction perpendicular to the runway, and the second reserved hole 17 penetrates through the entire second concrete precast slab 7 for the prestressed steel strand 10 to penetrate. At the same time, after the prestressed steel strand 10 penetrates into the second concrete precast slab 7, the second prestress can be applied to the second concrete precast slab 7 in cooperation with the anchor bolt assembly, so as to improve the mechanical properties of the second concrete precast slab 7, and further resist the real-time impact load on the runway during the takeoff and landing of the aircraft, thereby improving the overall impact resistance of the runway structure.

[0073] Here, the number and size of the second reserved holes 17 correspond one by one to the number and size of the prefabricated prestressed tendon holes 13 on the upper side among the two groups of mounting holes on the base 4, and their heights are the same to ensure the stability of the installation of the second precast concrete slab 7; more preferably, a second assembly limiting hole 16 is respectively provided at both ends of the second precast concrete slab 7, and the sizes and positions of the two second assembly limiting holes 16 correspond to the sizes and positions of the limiting columns 8 on the two bases 4 arranged in parallel at both ends of the second precast concrete slab 7. The installation of the second precast concrete slab 7 is guided and limited by the cooperation of the second assembly limiting hole 16 and the limiting column 8.

[0074] Refer to Figures 5 to 7 , the energy-absorbing material precast slab 6 is a flat plate and is arranged between the first precast concrete slab 5 and the second precast concrete slab 7. Both sides of the energy-absorbing material precast slab 6 are respectively attached to the upper surface of the support panel 51 and the lower surface of the second precast concrete slab 7.

[0075] In an alternative embodiment of the present invention, the energy-absorbing material precast slab 6 is made of a polymer polyurethane material, further absorbing the ground impact load of the detachable composite energy-absorbing structure layer during aircraft takeoff and landing, and further improving the overall impact resistance of the runway structure. Of course, the material of the energy-absorbing material precast slab 6 is not limited to the polymer polyurethane material, and other flexible materials that can absorb impact loads can be used; of course, the material of the flexible material layer can also be replaced according to actual construction and protection needs.

[0076] Preferably, a third assembly limiting hole is respectively provided at both ends of the energy-absorbing material precast slab 6, and the sizes and positions of the two third assembly limiting holes correspond to the sizes and positions of the limiting columns 8 on the two bases 4 arranged in parallel at both ends of the energy-absorbing material precast slab 6. The installation of the energy-absorbing material precast slab 6 is guided and limited by the cooperation of the third assembly limiting hole and the limiting column 8.

[0077] The embodiment of the present invention also provides a construction method for an assembled runway structure of an island reef airport, including the following steps:

[0078] Step 11, alternately bury a plurality of long friction piles 1 and a plurality of short friction piles 2 in the foundation 3 at the preset runway construction position in the anti-settlement foundation layer;

[0079] Step 12, lay out the bases 4 in the detachable support structure layer along the runway direction at the predetermined position according to the preset size of the runway, lift the bases by the lifting lugs 9 welded to the top of the bases and assemble them into a detachable support structure layer arranged in parallel. The detachable support structure layer arranged in parallel forms a limiting device for the overall runway foundation;

[0080] Step 13: Lift the first precast concrete slab 5 in the detachable composite energy-absorbing structure layer above the detachable support structure layer. Insert the first precast concrete slab 5 into the insertion groove 11 of the base 4 through assembly and compaction, and sleeve the limit post 8 of the base 4 with the first assembly limit hole 14 on the first precast concrete slab 5.

[0081] Step 14: Pass the prestressed steel strand 10 of the prestress component in the detachable support structure layer through the first reserved hole 15 on the first precast concrete slab 5, and apply the first prestress to the first precast concrete slab 5 by cooperating with anchor bolt components at both ends.

[0082] Step 15: Assemble the energy-absorbing material precast slab 6 in the detachable composite energy-absorbing structure layer onto the upper surface of the first precast concrete slab 5 by hoisting, and sleeve the limit post of the base 4 with the third assembly limit hole on the energy-absorbing material precast slab 6.

[0083] Step 16: Assemble the second precast concrete slab 7 in the detachable composite energy-absorbing structure layer onto the upper surface of the energy-absorbing material precast slab 6 by hoisting, and sleeve the limit post 8 of the base 4 with the second assembly limit hole 16 on the second precast concrete slab 7.

[0084] Step 17: Pass the prestressed steel strand 10 through the second reserved hole 17 on the second precast concrete slab 7, and apply the second prestress to the second precast concrete slab 7 by cooperating with anchor bolt components at both ends.

[0085] Step 18: Lay the asphalt pavement layer 12 on the upper surface of the second precast concrete slab 7.

[0086] In this embodiment, first, according to the construction requirements of the reef aircraft runway, pile foundation treatment is carried out on the coral sand or soft foundation 3, and the long friction piles 1 and short friction piles 2 with determined dimensions and lengths are buried in the foundation 3 to fully increase the friction between the lower structure (i.e., the short friction plate 52) of the assembled runway structure and the anti-sedimentation base layer, so as to greatly reduce the settlement of the anti-settlement foundation and the runway.

[0087] Layout the base 4 at the predetermined position according to the preset dimensions. Lift and assemble each steel base 4 through the lifting lugs 9 at the top of the base 4. The lifting lugs 9 of the base 4 along the runway direction can be interspersed with steel bars or prestressed steel strands 10 to form a limiting device for the overall runway foundation.

[0088] Here, the welding lugs 9 reserved along the runway direction on the first precast concrete slab 5, the energy-absorbing material precast slab 6, and the second precast concrete slab 7 are welded respectively. On the one hand, it is convenient to hoist each layer of slab, and on the other hand, the strength performance of the overall structure can also be enhanced after welding the welding lugs 9. The first precast concrete slab 5, the energy-absorbing material precast slab 6, and the second precast concrete slab 7 are hoisted onto the base 4 in sequence through the lugs 9, and the assembly limit holes on each layer of slab are sleeved with the limit columns on the base 4 to form a detachable runway structure. The prestressed steel strands 10 are respectively penetrated into the reserved holes of the first precast concrete slab 5 and the second precast concrete slab 7, and corresponding prestress is applied to the precast concrete slab 5 and the second precast concrete slab 7 at both ends with the cooperation of anchor bolt assemblies, while improving the anti-impact performance of the runway structure and meeting the real-time disassembly, installation and maintenance requirements.

[0089] By replacing the inherent cast-in-place concrete runway with a composite multi-layer structure that can be assembled and disassembled, the shrinkage and expansion effects of the cast-in-place concrete runway do not need to be considered, and thus the special requirements for the rapid assembly, construction and convenient maintenance of the runway structure can be realized. The material of the energy-absorbing material precast slab 6 in the composite multi-layer structure can be replaced according to the actual construction and protection needs.

[0090] Finally, an asphalt road surface layer 12 is laid on the top of the second precast concrete slab 7, which further increases the flexible self-recovery ability and anti-impact performance of the runway and ensures the flatness of the runway.

[0091] The assembled runway structure for island reef airports and its construction method provided by the above-mentioned embodiments of the present invention form a detachable and settlement-proof aircraft runway through the form of splicing and hoisting, giving full play to the detachable property of the assembly type, simplifying the construction process, having good construction convenience, and at the same time shortening the construction period. After assembly, the overall runway structure has the advantages of small settlement and differential settlement, long service life, strong anti-explosion and destruction ability, etc., and has good adaptability to the construction of island reef runways.

[0092] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. An assembled runway structure for an island reef airport, characterized in that, Comprising: A settlement prevention foundation layer, which includes a plurality of long friction piles and a plurality of short friction piles. The plurality of long friction piles and the plurality of short friction piles are alternately arranged and buried in the foundation of a preset runway construction position in an array form; A detachable support structure layer, which includes a parallel detachable support base and a plurality of prestressing components. The parallel detachable support bases are arranged along the runway direction on the settlement prevention foundation layer, and the plurality of prestressing components are arranged between the parallel detachable support bases. The detachable support bases are arranged at predetermined positions of the foundation to form a limiting device for the runway structure; A detachable composite energy-absorbing structure layer, which is arranged between the parallel detachable support bases and is detachably connected to the detachable support bases at both ends. The prestressing components penetrate into the reserved holes provided on the detachable composite energy-absorbing structure layer and apply prestress to the detachable composite energy-absorbing structure layer; the detachable composite energy-absorbing structure layer includes a first precast concrete slab, an energy-absorbing material precast slab, and a second precast concrete slab; both ends of the first precast concrete slab are detachably connected to the pedestals in adjacent and parallel detachable support bases respectively; the energy-absorbing material precast slab is laid on the upper surface of the first precast concrete slab, and both ends of the energy-absorbing material precast slab are respectively limited between adjacent and parallel pedestals; the second precast concrete slab is laid on the upper surface of the energy-absorbing material precast slab, and both ends of the second precast concrete slab are respectively limited between adjacent and parallel pedestals; and An asphalt pavement layer, which is laid on the detachable composite energy-absorbing structure layer, and a three-dimensional fiber net is formed on the upper surface of the detachable composite energy-absorbing structure layer and is uniformly distributed in the gaps of the detachable composite energy-absorbing structure layer.

2. The prefabricated runway structure of the reef airport according to claim 1, characterized in that, Each of the parallel detachable support bases includes a plurality of pedestals. The plurality of pedestals are linearly distributed, and adjacent two pedestals are detachably connected to form a detachable support base.

3. The prefabricated runway structure of the reef airport according to claim 2, wherein Two groups of mounting holes are formed in the upper part of the pedestal. The two groups of mounting holes are symmetrically arranged up and down, and both groups of mounting holes include a plurality of precast prestressing tendon holes, and the precast prestressing tendon holes correspond to the prestressing components one by one; Two parallel plug-in grooves are respectively formed on both sides of the lower part of the pedestal, and a limiting column is arranged between the two parallel plug-in grooves on each side.

4. The prefabricated runway structure of the reef airport according to claim 3, characterized in that, The prestressing component includes a prestressing steel strand and an anchor bolt assembly. The prestressing steel strand penetrates into the precast prestressing tendon holes and the reserved holes provided on the detachable composite energy-absorbing structure layer, and the anchor bolt assembly is matched at both ends of the prestressing steel strand to apply prestress to the detachable composite energy-absorbing structure layer and support the detachable composite energy-absorbing structure layer between the parallel detachable support bases.

5. The prefabricated runway structure of the reef airport according to claim 1, wherein The first precast concrete slab includes a support panel and two friction plates symmetrically arranged on the lower surface of the support panel.

6. The prefabricated runway structure of the reef airport according to claim 1, characterized in that The energy-absorbing material precast slab is made of a high molecular polyurethane material.

7. The prefabricated runway structure of the reef airport according to claim 1, characterized in that, The asphalt pavement surface layer is made of asphalt materials produced by an asphalt modifier with a preset viscosity and is formed by mixing and paving through a production unit.

8. A construction method of the prefabricated runway structure of the reef airport according to any one of claims 1 to 7, characterized in that, It includes the following steps: Alternately embed multiple long friction piles and multiple short friction piles in the foundation of a preset runway construction position in the anti-settlement base layer; Layout the pedestals in the detachable support structure layer along the runway direction at predetermined positions according to the preset size of the runway, lift the pedestals through the lifting lugs welded to the tops of the pedestals, and assemble them into the parallel detachable support structure layer. The parallel detachable support structure layer forms a limiting device for the overall runway foundation; Lift the first precast concrete slab in the detachable composite energy-absorbing structure layer above the detachable support structure layer, insert the first precast concrete slab into the insertion slots of the pedestals through assembly compaction, and sleeve the limiting columns of the pedestals with the first assembly limiting holes on the first precast concrete slab; Pass the prestressed steel strands of the prestressing component in the detachable support structure layer through the first reserved holes on the first precast concrete slab, and apply a first prestress to the first precast concrete slab at both ends in cooperation with the anchor bolt components; Assemble the energy-absorbing material precast slab in the detachable composite energy-absorbing structure layer onto the upper surface of the first precast concrete slab through hoisting, and sleeve the limiting columns of the pedestals with the third assembly limiting holes on the energy-absorbing material precast slab; Assemble the second precast concrete slab in the detachable composite energy-absorbing structure layer onto the upper surface of the energy-absorbing material precast slab through hoisting, and sleeve the limiting columns of the pedestals with the second assembly limiting holes on the second precast concrete slab; The prestressed steel strands pass through the second reserved holes on the second precast concrete slab, and apply a second prestress to the second precast concrete slab at both ends in cooperation with the anchor bolt components; Lay the asphalt pavement surface layer on the upper surface of the second precast concrete slab.

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