Island reef airport fabricated runway structure and construction method thereof

Abstract

The invention provides an island reef airport assembly type runway structure and a construction method thereof, and the runway structure comprises an anti-sedimentation foundation layer, a detachable composite energy absorption structure layer, a detachable support structure layer and an asphalt pavement layer. The anti-sedimentation foundation layer is buried in a foundation of a preset runway construction position; the detachable composite energy absorption structure layer and the detachable supporting structure layer are arranged on the upper surface of the foundation in the runway direction. The detachable supporting structure layer comprises detachable supporting bases and a plurality of prestress assemblies, wherein the detachable supporting bases are arranged at the two ends of the detachable composite energy absorption structure layer in parallel and detachably connected with the two ends of the detachable composite energy absorption structure layer correspondingly, and the prestress assemblies penetrate into the detachable composite energy absorption structure layer and apply prestress to the detachable composite energy absorption structure layer. The asphalt pavement layer is laid on the upper surface of the detachable composite energy absorption structure layer and forms a three-dimensional fiber net. According to the scheme provided by the invention, the speed, the service life, the impact resistance and the passive strike capability of the island reef airport runway integrated assembly construction are improved.

Description

Technical Field

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

[0002] In the construction of deep and remote islands and reefs, since the deep and remote islands and reefs are far away from the land, airports become important transportation stations between the islands and reefs and the land. At present, since artificial islands and reefs are mainly built by blowing and filling coral sand, the runways of island and reef airports are uneven, the settlement is large, and the construction is seriously lagging behind, which cannot meet the current needs of rapid development. In addition, due to the great military strategic significance of deep and remote islands and reefs, deep and remote islands and reefs have gradually become the primary targets of attack in military struggles, and more stringent requirements have been put forward for the rapid construction and improvement of protection capabilities of island and reef runways. According to the existing environmental conditions of the islands and reefs, in order to ensure the manpower in wartime, it is imperative to study the simplicity of construction and improvement of protection performance of airport runways on deep and remote islands and reefs.

[0003] At present, the construction of traditional deep-sea island reef airports is still mainly based on traditional cast-in-place reinforced concrete. Although this method can build airport runways that meet the requirements of aircraft takeoff and landing, there are still problems such as uneven runway settlement, complex construction and maintenance, and an inability to quickly respond to wartime conditions, resulting in problems with 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 and construction of the runway for an island reef airport and improve the overall impact resistance and service life of the runway structure for an island reef airport.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

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

[0007] An anti-settlement base layer, wherein the anti-settlement base layer is buried in the foundation of a preset runway construction location;

[0008] A detachable support structure layer, the detachable support structure layer comprising detachable support seats arranged in parallel and a plurality of prestressed components, the detachable support seats arranged in parallel are arranged on the anti-settling foundation layer along the runway direction, and the plurality of prestressed components are arranged between the detachable support seats arranged in parallel;

[0009] A detachable composite energy absorbing structural layer, wherein the detachable composite energy absorbing structural layer is disposed between the parallel detachable support seats and both ends are detachably connected to the detachable support seats, and the prestressed component penetrates into a reserved hole disposed on the detachable composite energy absorbing structural layer and applies prestress to the detachable composite energy absorbing structural layer; and

[0010] An asphalt pavement layer is laid on the detachable composite energy absorbing structure layer, and 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.

[0011] In one embodiment, the anti-settlement base 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 buried in the foundation in the form of an array.

[0012] In one embodiment, each of the detachable support bases arranged in parallel includes a plurality of bases, the plurality of bases are distributed in a straight line, and two adjacent bases are detachably connected to form a detachable support base.

[0013] In one embodiment, two groups of mounting holes are opened on the upper part of the base, the two groups of mounting holes are symmetrically arranged up and down, and the two groups of mounting holes each include a plurality of prefabricated prestressed tendon holes, and the prefabricated prestressed tendon holes correspond one to one with the prestressed components;

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

[0015] In one embodiment, the prestressed component includes a prestressed steel strand and an anchor bolt assembly. The prestressed steel strand passes through the prefabricated prestressed tendon holes and the reserved holes set on the detachable composite energy absorbing structure layer. The anchor bolt assemblies cooperate at both ends of the prestressed steel strand to apply prestress to the detachable composite energy absorbing structure layer and support the detachable composite energy absorbing structure layer between parallel detachable support seats.

[0016] In one embodiment, the detachable composite energy absorbing structural layer comprises:

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

[0018] A prefabricated plate of energy absorbing material, wherein the prefabricated plate of energy absorbing material is laid on the upper surface of the first prefabricated concrete plate and both ends of the prefabricated plate of energy absorbing material are respectively limited between adjacent and parallel bases; and

[0019] The second precast concrete slab is laid on the upper surface of the energy absorbing material precast slab and two ends of the second precast concrete slab are respectively limited between adjacent and parallel bases.

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

[0021] In one embodiment, the energy absorbing material prefabricated plate is made of high molecular weight polyurethane material.

[0022] In one embodiment, the asphalt pavement layer is made of asphalt material made of an asphalt modifier with a preset viscosity and is mixed and paved by a production unit.

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

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

[0025] The bases in the detachable support structure layer are arranged at predetermined positions along the runway direction according to the preset size of the runway, and the bases are lifted by the lifting ears welded to the top of the bases and assembled into the detachable support structure layers arranged in parallel, and the detachable support structure layers arranged in parallel form the limiting device of the overall runway foundation;

[0026] The first precast concrete panel in the detachable composite energy-absorbing structure layer is hoisted above the detachable supporting structure layer, the first precast concrete panel is inserted into the insertion slot of the base through assembly and compaction, and the limiting column of the base is fitted into the first assembly limiting hole on the first precast concrete panel;

[0027] Insert the prestressed steel strands of the prestressed assembly in the detachable supporting structure layer into the first reserved holes of the first precast concrete slab, and use anchor bolt assemblies at both ends to apply a first prestress to the first precast concrete slab;

[0028] Assemble the energy absorbing material prefabricated plate in the detachable composite energy absorbing structure layer to the upper surface of the first concrete prefabricated plate by hoisting, and fit the limiting column of the base into the third assembly limiting hole on the energy absorbing material prefabricated plate;

[0029] Assemble the second precast concrete panel in the detachable composite energy-absorbing structure layer to the upper surface of the precast energy-absorbing material panel by hoisting, and fit the limiting column of the base into the second assembly limiting hole on the second precast concrete panel;

[0030] The prestressed strands are inserted into the second reserved holes of the second precast concrete slab, and the anchor bolt assemblies are matched at both ends to apply the second prestress to the second precast concrete slab;

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

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

[0033] 1. Use long and short friction piles to reinforce the foundation and reduce the settlement of the foundation.

[0034] 2. A detachable composite energy-absorbing structure layer is used to replace the original pure concrete runway structure foundation, so that the entire runway has the advantages of good impact resistance, elastic recovery, durability, light weight and easy installation, thereby improving the overall performance of the runway; at the same time, it can also realize the rapid splicing and installation of the runway structure, which is convenient for the installation, disassembly, construction and later maintenance and replacement of the shelter.

[0035] 3. The detachable composite energy-absorbing structure layer is installed and limited by the prestressed components in the detachable supporting structure layer, and prestress is applied to resist the real-time impact load on the runway during the aircraft take-off and landing process, thereby improving the overall mechanical properties of the runway structure.

[0036] 4. Lay a modified asphalt pavement layer 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 assembled runway structure provided by an embodiment of the present invention;

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of an anti-settling base layer provided by an optional embodiment of the present invention;

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

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

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

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

[0043] Figure 7 It is a schematic diagram of a three-dimensional structure in which a prefabricated plate of energy-absorbing material and a second prefabricated concrete plate are assembled on a base provided by an optional embodiment of the present invention;

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

[0045] Description of Figure Numbers:

[0046] 100. Prefabricated runway structure of island airport; 1. Long friction piles; 2. Short friction piles; 3. Foundation; 4. Pedestal; 5. First precast concrete slab; 51. Support panel; 52. Friction plate; 6. Precast energy-absorbing material slab; 7. Second precast concrete slab; 8. Limiting column; 9. Lifting lug; 10. Prestressed steel strand; 11. Insertion slot; 12. Asphalt pavement; 13. Precast prestressed tendon holes; 14. First assembly limiting hole; 15. First reserved hole; 16. Second assembly limiting hole; 17. Second reserved hole. DETAILED DESCRIPTION

[0047] The 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 accompanying 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 to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0048] In the description of the present invention, it is to be understood that the terms "include / comprise", "consist of" or any other variation thereof are intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements includes not only those elements, but also other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of further restrictions, the elements defined by the phrases "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method including the elements.

[0049] It should also be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and should not be understood as a limitation on the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figure 1 As shown, an embodiment of the present invention provides an assembled runway structure 100 for an island and reef airport, including an anti-settlement base layer, a detachable composite energy absorbing structure layer, a detachable support structure layer and an asphalt pavement layer 12. Among them, the anti-settlement base layer is buried in the foundation 3 at the preset runway construction position. The detachable support structure layer includes parallel detachable support seats and a plurality of prestressed components. The parallel detachable support seats are arranged on the upper surface of the foundation 3 along the runway direction, and a plurality of prestressed 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 the two ends of the detachable composite energy absorbing structure layer are detachably connected to the detachable support seats. The prestressed 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. 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, the asphalt pavement layer 12 forms a three-dimensional fiber network 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 anti-settlement foundation layer, the detachable composite energy-absorbing structure layer, the detachable supporting structure layer and the asphalt pavement layer 12 are all arranged along the runway direction, and the specific size of each layer can be set according to the construction requirements of the island reef runway; wherein, the anti-settlement foundation layer can be pre-buried in the coral sand or weak foundation 3 at the runway construction location through a foundation treatment procedure to reduce the settlement of the foundation;

[0054] The detachable composite energy-absorbing structure layer is limited by the detachable supporting structure layer and can be detachably installed on the upper surface of the foundation 3. When designing the runway structure, there is no need to consider the concrete shrinkage and expansion effects of the cast-in-place runway, and the runway structure can be quickly disassembled and installed, thereby facilitating the installation, disassembly, construction and later maintenance and replacement of the shelter. Here, the pure concrete structure of the original runway structure is replaced by the detachable composite energy-absorbing structure layer, so that the runway structure has good impact resistance and elastic recovery, 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, which is convenient for the subsequent installation and laying of the detachable composite energy-absorbing structure layer and the asphalt pavement layer 12; here, the detachable support seat in the detachable support structure layer is arranged on both sides of the detachable composite energy-absorbing structure layer along the runway direction and relatively parallel to both ends, so as to achieve the limiting and positioning effect on the detachable composite energy-absorbing structure layer; the prestressed component in the detachable support structure layer runs through the detachable composite energy-absorbing structure layer, and the two ends of the prestressed component are respectively screwed and fixed with the detachable support seat, and when the prestressed component is installed, a certain amount of prestress can be provided to the detachable composite energy-absorbing structure layer through the prestressed component to resist the real-time impact load on the runway structure during the aircraft take-off and landing process, improve the mechanical properties of the detachable composite energy-absorbing structure layer, and also meet the real-time disassembly, assembly and maintenance needs of the runway structure. Here, the distance between two 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 the two adjacent detachable support seats are arranged in parallel along the runway direction;

[0056] Here, the asphalt pavement layer is laid on the upper surface of the removable composite energy-absorbing structure layer. Figure 8 As shown, in an optional embodiment of the present invention, the asphalt pavement layer 12 is a special modified asphalt pavement layer, which is made of asphalt material made of a new medium-high viscosity asphalt modifier and is mixed and paved by a production unit; the paving 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 material made of an asphalt modifier with a preset viscosity can be softened by high temperature during the mixing process of the production unit and can be pulled into a three-dimensional fiber network at the micro level, and evenly distributed in the gaps of the detachable composite energy-absorbing structural layer serving as the road surface, thereby improving the molding strength of the asphalt mixture, stabilizing the structure and recovering from deformation, and further increasing the flexibility and impact resistance of the runway structure.

[0057] like Figure 2 As shown, in an optional 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 buried in the foundation 3 alternately and in the form of an array.

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

[0059] like Figure 4As shown, in an optional embodiment of the present invention, each of the parallel detachable support bases includes a plurality of bases 4, the plurality of bases 4 are distributed in a straight line and two adjacent bases are detachably connected to form a detachable support base.

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

[0061] like Figure 4 As shown, in an optional embodiment of the present invention, two groups of mounting holes are opened on the upper part of the base 4, and the two groups of mounting holes are symmetrically arranged up and down, and the two groups of mounting holes each include a plurality of prefabricated prestressed tendon holes 13, and the prefabricated prestressed tendon holes 13 correspond one-to-one to the prestressed components; two parallel insertion slots 11 are opened on both sides of the lower part of the base 4, and a limiting column 8 is arranged between the two parallel insertion slots 11 on each side.

[0062] In this embodiment, the base 4 is a convex structure, and the upper part of the convex structure base 4 is provided with two groups of mounting holes along the direction perpendicular to the runway, and each group of mounting holes includes a plurality of prefabricated prestressed tendon holes 13 evenly distributed along the runway direction for the hinged assembly to pass through; the two groups of mounting holes are symmetrically arranged up and down, and the two groups of mounting holes correspond to different levels in the detachable composite energy absorbing structure layer, respectively, so as to cooperate with the prestressed assembly to support different levels in the detachable composite energy absorbing structure layer on the foundation 3, and provide corresponding prestress for different levels, so as to resist the real-time impact load on the runway structure during the take-off 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] Two parallel insertion grooves 11 are provided on each of the two sides of the lower part of the base 4 of the convex structure in a direction perpendicular to the runway, and the two parallel insertion grooves on both sides are symmetrically arranged about the mounting hole to facilitate the installation and removal of the bottom of the detachable composite energy-absorbing structure layer; here, at least one limiting column 8 is arranged between the two parallel insertion grooves 11 on each side to facilitate the guidance and limiting of the detachable composite energy-absorbing structure layer during installation;

[0064] Preferably, a lifting lug 9 may be welded on the top of the base 4 of the convex structure to facilitate lifting and assembling to form a detachable support base.

[0065] like Figure 4As shown, in an optional embodiment of the present invention, the prestressed component includes a prestressed steel strand 10 and an anchor bolt assembly. The prestressed steel strand 10 penetrates into the prefabricated prestressed tendon holes 13 and the reserved holes set on the detachable composite energy absorbing structure layer. The anchor bolt assemblies are cooperated at both ends of the prestressed steel strand 10 to apply prestress to the detachable composite energy absorbing structure layer and support the detachable composite energy absorbing structure layer between parallel detachable support seats.

[0066] When installing the runway structure, one end of the prestressed steel strand 10 passes through the prefabricated prestressed tendon hole 13 on the base 4 at one end of the detachable composite energy absorbing structure layer into the reserved hole of the corresponding layer 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 the two ends of the prestressed steel strand 10 are respectively fixed to the outer sides of the two bases 4 arranged in parallel at both ends of the detachable composite energy absorbing structure layer through anchor bolt assemblies; the prestressed steel strand 10 cooperates with the anchor bolt assembly to provide corresponding prestress for different layers in the detachable composite energy absorbing structure layer to resist the real-time impact load on the runway structure during aircraft take-off and landing, improve the mechanical properties of the detachable composite energy absorbing structure layer, and then 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 size.

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

[0068] In this embodiment, the first precast concrete panel 5, the precast energy absorbing material panel 6 and the second precast concrete panel 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 material, the runway structure as a whole has the advantages of good impact resistance, elastic recovery, durability, light weight and easy installation, thereby improving the overall performance of the runway.

[0069] like Figure 3 As shown, in an optional embodiment of the present invention, the first precast concrete panel 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. Figure 6As shown, the distance between the two friction plates 52 matches the distance between the two parallel insertion grooves 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 panel 5 are respectively inserted into the two parallel insertion grooves 11 on one side of the two parallel bases 4 through assembly and compaction, so as to support the entire support panel 51 on the lower part of the base 4, so that the support panel 51 can reduce the settlement of the upper cushion layer while bearing the upper load.

[0070] Preferably, a first reserved hole 15 is opened on the support panel 51 in a direction perpendicular to the runway, and the first reserved hole runs through the entire support panel 51 for the prestressed steel strand 10 to pass through. At the same time, after the prestressed steel strand 10 passes through the support panel 51, the first prestress can be applied to the support panel 51 in conjunction with the anchor bolt assembly to improve the mechanical properties of the first concrete precast panel 5, thereby resisting the real-time impact load on the runway during the aircraft take-off and landing process, thereby improving the overall impact resistance of the runway structure.

[0071] Here, the number and size of the first reserved holes 15 correspond one-to-one to the number and size of the prefabricated prestressed tendon holes 13 located on the lower side of the two groups of mounting holes on the base 4, and the two are highly consistent to ensure the stability of the installation of the first concrete precast panel 5; more preferably, a first assembly limit hole 14 is respectively opened at both ends of the support panel 51, and the size and position of the two first assembly limit holes 14 respectively correspond to the size and position of the limit columns 8 on the two bases 4 arranged parallel to the two ends of the support panel 51, and the first assembly limit holes 14 cooperate with the limit columns 8 to guide and limit the installation of the first concrete precast panel 5.

[0072] See also Figures 5 to 7 , the second precast concrete panel 7 is a flat panel, and the second precast concrete panel 7 is made of the same material as the first precast concrete panel 5. Preferably, a second reserved hole 17 is provided on the second precast concrete panel 7 in a direction perpendicular to the runway, and the second reserved hole 17 runs through the entire second precast concrete panel 7 for the prestressed steel strand 10 to penetrate, and after the prestressed steel strand 10 penetrates the second precast concrete panel 7, the anchor bolt assembly can be used to apply a second prestress to the second precast concrete panel 7 to improve the mechanical properties of the second precast concrete panel 7, thereby resisting the real-time impact load on the runway during the aircraft take-off and landing process, thereby improving the overall impact resistance of the runway structure.

[0073] Here, the number and size of the second reserved holes 17 correspond one-to-one to the number and size of the prefabricated prestressed tendon holes 13 located on the upper side of the two groups of mounting holes on the base 4, and the two are highly consistent to ensure the stability of the installation of the second prefabricated concrete panel 7; more preferably, a second assembly limiting hole 16 is respectively opened on both ends of the second prefabricated concrete panel 7, and the size and position of the two second assembly limiting holes 16 respectively correspond to the size and position of the limiting columns 8 on the two bases 4 arranged parallel to the two ends of the second prefabricated concrete panel 7, and the second assembly limiting holes 16 cooperate with the limiting columns 8 to guide and limit the installation of the second prefabricated concrete panel 7.

[0074] See also Figures 5 to 7 The energy absorbing material prefabricated plate 6 is a flat plate and is arranged between the first concrete prefabricated plate 5 and the second concrete prefabricated plate 7. Both sides of the energy absorbing material prefabricated plate 6 are respectively attached to the upper surface of the supporting panel 51 and the lower surface of the second concrete prefabricated plate 7.

[0075] In an optional embodiment of the present invention, the energy absorbing material prefabricated plate 6 is made of a polymer polyurethane material, which further absorbs the impact load of the detachable composite energy absorbing structure layer on the ground during aircraft takeoff and landing, and further improves the overall impact resistance of the runway structure. Of course, the material of the energy absorbing material prefabricated plate 6 is not limited to 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 limit hole is respectively opened on both ends of the energy-absorbing material prefabricated plate 6, and the size and position of the two third assembly limit holes respectively correspond to the size and position of the limit columns 8 on the two bases 4 arranged parallel to the two ends of the energy-absorbing material prefabricated plate 6. The third assembly limit holes cooperate with the limit columns 8 to guide and limit the installation of the energy-absorbing material prefabricated plate 6.

[0077] An embodiment of the present invention further provides a method for constructing an assembled runway structure of an island reef airport, comprising the following steps:

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

[0079] Step 12, arranging the bases 4 in the detachable support structure layer at predetermined positions along the runway direction according to the preset size of the runway, lifting the bases by means of the lifting ears 9 welded to the tops of the bases and assembling them into parallel detachable support structure layers, and the parallel detachable support structure layers form a limiting device for the overall runway foundation;

[0080] Step 13, hoist the first precast concrete panel 5 in the detachable composite energy-absorbing structure layer to above the detachable supporting structure layer, insert the first precast concrete panel 5 into the insertion slot 11 of the base 4 by assembly and compaction, and fit the limiting column 8 of the base 4 into the first assembly limiting hole 14 on the first precast concrete panel 5;

[0081] Step 14, insert the prestressed steel strands 10 of the prestressed assembly in the detachable supporting structure layer into the first reserved holes 15 on the first precast concrete slab 5, and use anchor bolt assemblies at both ends to apply a first prestress to the first precast concrete slab 5;

[0082] Step 15, assemble the energy absorbing material prefabricated plate 6 in the detachable composite energy absorbing structure layer to the upper surface of the first concrete prefabricated plate 5 by hoisting, and fit the limiting column of the base 4 into the third assembly limiting hole on the energy absorbing material prefabricated plate 6;

[0083] Step 16, assemble the second precast concrete panel 7 in the detachable composite energy absorbing structure layer to the upper surface of the precast energy absorbing material panel 6 by hoisting, and fit the limiting column 8 of the base 4 into the second assembly limiting hole 16 on the second precast concrete panel 7;

[0084] Step 17, the prestressed steel strand 10 is passed through the second reserved hole 17 on the second precast concrete panel 7, and anchor bolt assemblies are used at both ends to apply a second prestress to the second precast concrete panel 7;

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

[0086] In this embodiment, firstly, according to the construction requirements of the island reef runway, the coral sand or soft foundation 3 is treated with pile foundation, and the long friction piles 1 and the short friction piles 2 with determined size and length are buried in the foundation 3 to fully increase the friction between the lower structure of the assembled runway structure (i.e., the short friction plate 52) and the anti-sedimentation foundation layer, so as to significantly reduce the settlement of the anti-sedimentation foundation and the runway;

[0087] The base 4 is arranged at a predetermined position according to a preset size, and the steel bases 4 are lifted and assembled one by one through the lifting lugs 9 on the top of the base 4. Steel bars or prestressed steel strands 10 can be inserted between the lifting lugs 9 of the base 4 along the runway direction to form a limiting device for the overall runway foundation;

[0088] Here, the welding ears 9 reserved along the runway direction of the first precast concrete panel 5, the energy-absorbing material precast panel 6 and the second precast concrete panel 7 are welded respectively, which is convenient for hoisting the panels of each level on the one hand, and can also enhance the strength performance of the overall structure after welding the ears 9 on the other hand; the first precast concrete panel 5, the energy-absorbing material precast panel 6 and the second precast concrete panel 7 are hoisted to the base 4 in sequence through the ears 9, and the assembly limit holes on each layer of the panel are nested with the limit columns on the base 4 to form a detachable runway structure; the prestressed steel strands 10 are respectively inserted into the reserved holes of the first precast concrete panel 5 and the second precast concrete panel 7, and the anchor bolt assemblies are used at both ends to apply corresponding prestress to the precast concrete panel 5 and the second precast concrete panel 7, which not only improves the impact resistance of the runway structure, but also meets the real-time disassembly and maintenance needs;

[0089] By replacing the existing cast-in-place concrete runway with a composite multi-layer structure that can be assembled and disassembled, there is no need to consider the shrinkage and expansion effects of the cast-in-place concrete runway, thereby achieving the special needs of rapid assembly, construction and convenient maintenance of the runway structure; the material of the energy-absorbing material prefabricated plate 6 in the composite multi-layer structure can be replaced according to actual construction and protection needs;

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

[0091] The assembled runway structure for island and reef airports and the construction method thereof provided by the above-mentioned embodiment of the present invention form a detachable and anti-settling aircraft runway through the form of splicing and hoisting construction, giving full play to the detachability of the assembled structure, simplifying the construction process, having good construction convenience, and shortening the construction period; after assembly, the overall runway structure has the advantages of small settlement and differential settlement, long service life, strong anti-blasting ability, etc., and has good adaptability to island and reef runway construction.

[0092] The above description is the preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An assembled runway structure for an island reef airport, characterized in that: include: An anti-settlement base layer, wherein the anti-settlement base layer is buried in the foundation of a preset runway construction location; A detachable support structure layer, the detachable support structure layer comprising detachable support seats arranged in parallel and a plurality of prestressed components, the detachable support seats arranged in parallel are arranged on the anti-settling foundation layer along the runway direction, and the plurality of prestressed components are arranged between the detachable support seats arranged in parallel; A detachable composite energy absorbing structural layer, wherein the detachable composite energy absorbing structural layer is disposed between the parallel detachable support seats and both ends are detachably connected to the detachable support seats, and the prestressed component penetrates into a reserved hole disposed on the detachable composite energy absorbing structural layer and applies prestress to the detachable composite energy absorbing structural layer; and An asphalt pavement layer is laid on the detachable composite energy absorbing structure layer, and 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.

2. The assembled runway structure for island and reef airport according to claim 1 is characterized in that: 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 buried in the foundation in the form of an array.

3. The assembled runway structure for island and reef airport according to claim 1 is characterized in that: Each of the detachable support bases arranged in parallel includes a plurality of bases, the plurality of bases are distributed in a straight line, and two adjacent bases are detachably connected to form a detachable support base.

4. The assembled runway structure for island and reef airport according to claim 3 is characterized in that: Two groups of mounting holes are provided on the upper part of the base, the two groups of mounting holes are symmetrically arranged up and down, and both groups of mounting holes include a plurality of prefabricated prestressed tendon holes, and the prefabricated prestressed tendon holes correspond to the prestressed components one by one; Two parallel insertion slots are respectively provided on both sides of the lower part of the base, and a limiting column is provided between the two parallel insertion slots on each side.

5. The assembled runway structure for island and reef airport according to claim 4 is characterized in that: The prestressed component includes a prestressed steel strand and an anchor bolt component. The prestressed steel strand is inserted into the prefabricated prestressed tendon holes and the reserved holes arranged on the detachable composite energy absorbing structure layer. The anchor bolt components cooperate with the two ends of the prestressed steel strand to apply prestress to the detachable composite energy absorbing structure layer and support the detachable composite energy absorbing structure layer between parallel detachable support seats.

6. The assembled runway structure for island and reef airport according to claim 3 is characterized in that: The detachable composite energy-absorbing structural layer comprises: A first precast concrete panel, wherein two ends of the first precast concrete panel are detachably connected to adjacent and parallel bases; A prefabricated plate of energy absorbing material, wherein the prefabricated plate of energy absorbing material is laid on the upper surface of the first prefabricated concrete plate and both ends of the prefabricated plate of energy absorbing material are respectively limited between adjacent and parallel bases; and The second precast concrete slab is laid on the upper surface of the energy absorbing material precast slab and two ends of the second precast concrete slab are respectively limited between adjacent and parallel bases.

7. The assembled runway structure for an island airport according to claim 6 is characterized in that: The first precast concrete panel includes a supporting panel and two friction plates symmetrically arranged on the lower surface of the supporting panel.

8. The assembled runway structure for an island airport according to claim 6 is characterized in that: The energy absorbing material prefabricated plate is made of high molecular weight polyurethane material.

9. The assembled runway structure for an island and reef airport according to claim 1 is characterized in that: The asphalt road surface layer is made of asphalt material made of asphalt modifier with preset viscosity and is mixed and paved by a production unit.

10. A method for constructing an assembled runway structure for an island and reef airport according to any one of claims 1 to 9, characterized in that: The following steps are involved: Alternately burying a plurality of long friction piles and a plurality of short friction piles in the anti-settlement foundation layer in the foundation of a preset runway construction location; The bases in the detachable support structure layer are arranged at predetermined positions along the runway direction according to the preset size of the runway, and the bases are lifted by the lifting ears welded to the top of the bases and assembled into the detachable support structure layers arranged in parallel, and the detachable support structure layers arranged in parallel form the limiting device of the overall runway foundation; The first precast concrete panel in the detachable composite energy-absorbing structure layer is hoisted above the detachable supporting structure layer, the first precast concrete panel is inserted into the insertion slot of the base through assembly and compaction, and the limiting column of the base is fitted into the first assembly limiting hole on the first precast concrete panel; Insert the prestressed steel strands of the prestressed assembly in the detachable supporting structure layer into the first reserved holes of the first precast concrete slab, and use anchor bolt assemblies at both ends to apply a first prestress to the first precast concrete slab; Assemble the energy absorbing material prefabricated plate in the detachable composite energy absorbing structure layer to the upper surface of the first concrete prefabricated plate by hoisting, and fit the limiting column of the base into the third assembly limiting hole on the energy absorbing material prefabricated plate; Assemble the second precast concrete panel in the detachable composite energy-absorbing structure layer to the upper surface of the precast energy-absorbing material panel by hoisting, and fit the limiting column of the base into the second assembly limiting hole on the second precast concrete panel; The prestressed strands are inserted into the second reserved holes of the second precast concrete slab, and the anchor bolt assemblies are matched at both ends to apply the second prestress to the second precast concrete slab; The asphalt pavement layer is laid on the upper surface of the second precast concrete slab.

Images