Fabricated composite airport pavement surface layer structure and assembly method

Abstract

The invention relates to the technical field of airport engineering, in particular to an assembly type composite airport pavement surface layer structure and an assembly method. The assembly type pavement surface layer comprises square assembly block bodies, regular octagonal assembly block bodies and an additional paving layer. The square assembly block bodies and the octagonal pavement assembly block bodies are oppositely spliced along the edges and extend along the plane to form an airport pavement, and an additional paving layer is arranged on the pavement paved by the square assembly block bodies and the octagonal pavement assembly block bodies; each of the square assembly block body and the regular octagonal assembly block body is formed by mutually overlapping an upper surface layer and a lower surface layer which are the same in shape; the area of the lower surface layer is larger than that of the upper surface layer; and the lower surface layer and the lower surface layer edge are of a step structure. The fabricated airport pavement can fill up the vacancy in the prior art, compared with an airport pavement constructed on site, the fabricated airport pavement has the advantages that modular construction is achieved, the assembly speed is high, the quality of assembly blocks is easy to control, and cement concrete does not need to be maintained and waited, and is particularly suitable for rapid construction scenes such as combat readiness and emergency rescue.

Description

Technical Field

[0001] The invention relates to the technical field of airport engineering, and in particular to an assembled composite airport pavement surface layer structure and an assembly method. Background Art

[0002] Compared with airport pavements cast on site with cement concrete, prefabricated airport pavements have the advantages of modular construction, fast assembly speed, easy quality control of assembled blocks, and rapid application without curing time. The composite surface structure composed of an upper asphalt concrete layer and a lower cement concrete layer is being used more and more in the current airport pavement construction, while the existing prefabricated airport pavement solutions are mainly concentrated in the assembly of traditional cement concrete single-layer panels.

[0003] In this regard, the present invention proposes a structural composition and an assembly method of an assembled composite airport pavement surface layer, which is composed of regular octagonal assembly blocks and square assembly blocks assembled together. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an assembled composite airport pavement surface structure and an assembly method.

[0005] The present invention adopts the following scheme:

[0006] An assembled composite airport pavement surface layer structure, the assembled pavement surface layer comprises: a square assembly block, a regular octagonal assembly block, and an overlay layer;

[0007] A plurality of square assembly blocks and octagonal pavement assembly blocks are relatively spliced ​​along their edges and extended along a plane to form an airport pavement, and an additional layer is provided on the pavement laid by the square assembly blocks and the octagonal pavement assembly blocks;

[0008] The square assembly blocks and the regular octagonal assembly blocks are composed of upper layers and lower layers of the same shape which are overlapped with each other;

[0009] The area of ​​the lower layer is larger than that of the upper layer, and the lower layer and the edge of the lower layer are in a stepped structure.

[0010] In the assembled composite airport pavement surface structure of the present invention, a plurality of cylindrical holes intersecting vertically and horizontally are arranged in the lower layer of the regular octagonal assembly block; a sinking portion is arranged on the vertical surface of the edge of the lower layer of the regular octagonal assembly block, and the sinking portion is connected with the cylindrical hole;

[0011] According to the arrangement of the regular octagonal assembly blocks, the sinking platforms are divided into five categories: AI, A-II, A-III, A-IV, and AV;

[0012] The AI-type regular octagonal assembly block is in the form of: a sinking portion is provided at the opening of the cylindrical hole on any three vertical planes in the lower layer, and a non-sinking portion vertical plane is spaced between every two adjacent sinking portions;

[0013] The A-II type regular octagonal assembly block is in the form of: a sinking portion is provided at the opening of the cylindrical hole on any two vertical surfaces in the lower layer; the two vertical surfaces are arranged oppositely;

[0014] The A-III regular octagonal assembly block has the following form: a sinking platform is provided at the opening of the cylindrical hole on any two vertical planes in the lower layer, and a non-sinking platform vertical plane is spaced between two adjacent sinking platforms;

[0015] The form of the A-IV type regular octagonal assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any vertical surface of the lower layer;

[0016] The form of the AV-type regular octagonal assembly block is that no sinking portion is provided at the opening of the cylindrical hole on each vertical surface in the lower layer.

[0017] The assembled composite airport pavement surface structure of the present invention has a plurality of cylindrical holes intersecting vertically and horizontally arranged in the lower layer of the square assembly block; a sinking portion is arranged on the vertical surface of the edge of the lower layer of the square assembly block, and the sinking portion is connected with the cylindrical holes;

[0018] According to the arrangement of the square assembly blocks, the sinking platforms are divided into five categories: BI, B-II, B-III, B-IV, and BV;

[0019] The BI type square assembly block is: a sinking part is provided at the opening of the cylindrical hole on any three vertical surfaces in the lower layer;

[0020] The B-II type square assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any two adjacent vertical surfaces in the lower layer;

[0021] The B-III type square assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any two oppositely arranged vertical surfaces in the lower layer;

[0022] The B-IV type square assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any vertical surface of the lower layer;

[0023] The BV type square assembly block is as follows: no sinking part is arranged at the opening of the cylindrical hole on each vertical surface.

[0024] The assembled composite airport pavement surface structure of the present invention,

[0025] The side length of the upper layer of the square assembly block or the regular octagonal assembly block is 3-5m;

[0026] The side length of the lower layer of the square assembly block or regular octagonal assembly block is 3-5m;

[0027] The plane width of the upper layer of the square assembly block or the regular octagonal assembly block is 2 cm shorter than the plane width of the lower layer;

[0028] The thickness of the upper layer of the square assembly block or the regular octagonal assembly block is 0.06-0.1m;

[0029] The thickness of the lower layer of the square assembly block or the regular octagonal assembly block is 0.2-0.35m;

[0030] The upper layer of the square assembly block or the regular octagonal assembly block is a cement concrete layer;

[0031] The upper and lower layers of the square assembly blocks or regular octagonal assembly blocks are asphalt concrete layers.

[0032] The structure of the surface layer of the assembled composite airport pavement described in the present invention is that the sink is set at the opening of the cylindrical hole on the vertical plane, its central symmetry axis coincides with the central symmetry axis of the cylinder, its diameter is 40mm, and the horizontal depth is 10cm.

[0033] The present invention provides an assembly method for an assembled composite airport pavement surface layer structure, and the assembly method for an assembled pavement surface layer is divided into the following steps:

[0034] S1: on the upper surface of the airport pavement base, square assembly blocks or regular octagonal assembly blocks are assembled and combined, and a prestressed steel strand network is formed on the lower layer of each assembly block to form the lower layer of the assembled airport pavement;

[0035] S2: Fill the joints between the upper layers of each assembly block to form a complete assembled airport pavement;

[0036] S3: Spread a layer of asphalt concrete on the complete prefabricated airport pavement composed of square assembly blocks or regular octagonal assembly blocks to form an overlay layer of the prefabricated airport pavement.

[0037] The present invention provides a method for assembling a prefabricated composite airport pavement surface structure.

[0038] In step S1, the classification of regular octagonal assembly blocks is: AI, A-II, A-III, A-IV, AV; the classification of square assembly blocks is: BI, B-II, B-III, B-IV, BV;

[0039] An assembly block is assembled and combined with other surrounding assembly blocks in the horizontal and vertical directions respectively in the following forms:

[0040] (1) ABA form: The prestressed steel strands are sequentially passed through the first regular octagonal assembly block, the square assembly block, and the regular octagonal assembly block; after being tensioned according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the first and second regular octagonal assembly blocks, and grouting is performed in the hole after the anchor is protected with end-sealed concrete;

[0041] Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of B-II, B-IV, and BV;

[0042] (2) BAB form: The prestressed steel strands are sequentially passed through the first square assembly block, the regular octagonal assembly block, and the second square assembly block. After being tensioned according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the first and second square assembly blocks, and grouting is performed into the hole after the anchor is protected with end-sealed concrete.

[0043] Among them, the regular octagonal assembly block is one of A-II, A-IV, and AV, and the square assembly block is one of BI, B-III, and B-IV;

[0044] (3) AB: Prestressed steel strands are passed through the regular octagonal assembly blocks and the square assembly blocks. After tensioning according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the regular octagonal assembly blocks and the square assembly blocks, and grouting is performed into the hole after the anchor is protected with end-sealed concrete.

[0045] Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of BI, B-III, and B-IV;

[0046] (4) A: Prestressed steel strands are passed through the regular octagonal assembly block, tensioned according to the prestressing setting requirements, anchored on two opposite vertical surfaces of the regular octagonal assembly block, and grouting is performed in the hole after the anchor is protected with end-sealed concrete; the regular octagonal assembly block is one of AI and A-II;

[0047] (5) A: Prestressed steel strands are passed through the square assembly block, tensioned according to the prestressing setting requirements, anchored on two opposite vertical surfaces of the square assembly block, and grouting is performed in the hole after the anchor is protected with end-capping concrete. The square assembly block is one of BI and B-II.

[0048] The present invention provides a method for assembling a prefabricated composite airport pavement surface structure.

[0049] When assembling and combining the regular octagonal assembly blocks and the square assembly blocks, starting from one of the top corners of the assembly area defined by the airport pavement, the two assembly combination methods of ABA and BAB are preferably used to assemble in the horizontal and vertical directions to form the airport pavement, and the lower vertical surfaces of adjacent assembly blocks are closely attached;

[0050] In the horizontal and vertical directions, the combination of ABA and BAB is used alternately;

[0051] When the assembly blocks cover the entire assembly area, if the remaining blocks to be inserted into the prestressed steel strands are both adjacent regular octagonal assembly blocks and square assembly blocks, the assembly combination method AB is adopted;

[0052] If the remaining blocks to be inserted into the prestressed steel strand only have one regular octagonal assembly block or only one square assembly block, assembly combination method A or assembly combination method B is adopted.

[0053] The present invention provides a method for assembling a prefabricated composite airport pavement surface structure.

[0054] Since the side lengths of the upper plan views of the regular octagonal assembly blocks and the square assembly blocks are 2 cm longer than the side lengths of the lower plan views, and the lower vertical surfaces of adjacent assembly blocks are closely attached, a 4 cm wide joint is formed between the upper vertical surfaces of adjacent assembly blocks.

[0055] The joint filling material in step S2 is a polyurethane or asphalt mortar material. The material completely fills the joint and the upper surface of the filled joint is on the same level as the upper surface of the upper layer of the adjacent assembly block.

[0056] In the structural assembly method of the surface layer of an assembled composite airport pavement described in the present invention, the overlay layer in step S3 is an asphalt concrete layer, and the thickness of the overlay layer is 4-6 cm.

[0057] In the method for assembling an assembled composite airport pavement surface structure described in the present invention, the largest rectangular area is selected from the airport pavement area formed by assembling and combining the regular octagonal assembly blocks and the square assembly blocks as the working area of ​​the assembled airport pavement.

[0058] Beneficial effects:

[0059] At present, the surface structure composed of an upper asphalt concrete layer and a lower cement concrete layer is being used more and more in the current airport pavement construction, while the existing prefabricated airport pavement solutions are mainly focused on the assembly of traditional cement concrete single-layer slabs.

[0060] In this regard, the present invention proposes a structural composition and assembly method of an assembled composite airport pavement surface layer, which is composed of a regular octagonal assembly block and a square assembly block. Cylindrical holes are reserved in the assembly blocks for interlacing to form a prestressed steel strand network to ensure the integrity of the assembled structure. The asphalt layer added to the top layer of the assembled structure can effectively improve the surface unevenness caused by the module assembly.

[0061] The present invention can fill the gaps in the prior art. Compared with airport pavements constructed on site, prefabricated airport pavements have the advantages of modular construction, fast assembly speed, easy control of assembly block quality, and no need for curing of cement concrete. It is particularly suitable for rapid construction scenarios such as war preparedness and emergency rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a schematic diagram of a regular octagonal assembly block-I of the present invention;

[0063] Figure 2 This is a schematic diagram of a regular octagonal assembly block-II of the present invention;

[0064] Figure 3 This is a schematic diagram of the regular octagonal assembly block-III of the present invention;

[0065] Figure 4 It is a schematic diagram of the regular octagonal assembly block-IV of the present invention;

[0066] Figure 5 It is a schematic diagram of a regular octagonal assembly block-V of the present invention;

[0067] Figure 6 This is a schematic diagram of a square assembly block-I of the present invention;

[0068] Figure 7 It is a schematic diagram of the square assembly block-II of the present invention;

[0069] Figure 8 It is a schematic diagram of the square assembly block-III of the present invention;

[0070] Fig. 9 It is a schematic diagram of the square assembly block-IV of the present invention;

[0071] Fig.10 It is a schematic diagram of a square assembly block-V of the present invention;

[0072] Fig.11 It is a schematic diagram of the assembly combination relationship between the assembly blocks in the first embodiment and the second embodiment;

[0073] Fig.12 It is a schematic diagram of the assembly combination relationship between the assembly blocks in the third embodiment;

[0074] Fig.13 It is a schematic diagram of the assembly combination relationship between the assembly blocks in the fourth embodiment;

[0075] Fig.14 It is a schematic diagram of the sinking platform structure of the present invention. DETAILED DESCRIPTION

[0076] In order to make the purpose and technical solution of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0077] like Figures 1 to 10 As shown:

[0078] The present invention discloses an assembled composite airport pavement surface layer structure, wherein the assembled pavement surface layer comprises: a square assembly block, a regular octagonal assembly block, and an additional layer;

[0079] A plurality of square assembly blocks and octagonal pavement assembly blocks are relatively spliced ​​along their edges and extended along a plane to form an airport pavement, and an additional layer is provided on the pavement laid by the square assembly blocks and the octagonal pavement assembly blocks;

[0080] The square assembly blocks and the regular octagonal assembly blocks are composed of upper layers and lower layers of the same shape which are overlapped with each other;

[0081] The area of ​​the lower layer is larger than that of the upper layer, and the lower layer and the edge of the lower layer are in a stepped structure.

[0082] The square assembly blocks and the regular octagonal assembly blocks are both double-layer composite structures, consisting of a lower cement concrete layer and an upper asphalt concrete layer, which form the lower layer and middle surface layer of the pavement structure respectively after assembly. After assembly, a layer of asphalt concrete is laid on top of the assembly blocks as the upper layer of the pavement surface structure.

[0083] The present invention discloses an assembled composite airport pavement surface structure, wherein the regular octagonal assembly blocks can be divided into five categories, namely AI, A-II, A-III, A-IV, and AV, and there are no other differences between the five categories of assembly blocks except for the different positions of the vertical surface countersunk holes. The square assembly blocks can be divided into five categories, namely BI, B-II, B-III, B-IV, and BV, and there are no other differences between the five categories of assembly blocks except for the different positions of the vertical surface countersunk platforms.

[0084] The four vertical surfaces of the lower layer of the regular octagonal assembly block are distributed with cylindrical holes. The difference between the five types of regular octagonal assembly blocks AI, A-II, A-III, A-IV, and AV lies in the different setting characteristics of the sinking platform at the opening hole.

[0085] The specific structure of the sink is coaxially arranged cylindrical holes, the aperture of the cylindrical holes is divided into large aperture and small aperture, and the cylindrical holes with large aperture are located at the edge of the lower layer of the square assembly block or the regular octagonal assembly block; the specific structure is as follows Fig.14 shown.

[0086] The details are as follows:

[0087] AI: sinks are provided at the openings of the cylindrical holes on the three vertical planes;

[0088] A-II: sinking parts are arranged at the openings of the cylindrical holes on two vertical planes, and the two vertical planes are opposite to each other, i.e. separated by three vertical planes;

[0089] A-III: sinks are provided at the openings of the cylindrical holes on two vertical planes, and a vertical plane is between the two vertical planes;

[0090] A-IV: A sink portion is provided at the opening of a cylindrical hole on a vertical plane;

[0091] AV: No countersunk portion is provided at the opening of the cylindrical hole on each vertical surface.

[0092] Furthermore, the four vertical surfaces of the lower layer of the square assembly block are distributed with openings of cylindrical holes. The difference between the five types of square assembly blocks BI, B-II, B-III, B-IV, and BV is that the setting characteristics of the sinking platform at the opening hole are different, as follows, see Figures 6 to 10 As shown:

[0093] BI: sinking parts are provided at the openings of the cylindrical holes on the three vertical planes;

[0094] B-II: sinking parts are provided at the openings of the cylindrical holes on two adjacent vertical surfaces;

[0095] B-III: sinking parts are provided at the openings of the cylindrical holes on two non-adjacent vertical surfaces;

[0096] B-IV: A sink portion is provided at the opening of a cylindrical hole on a vertical plane;

[0097] BV: No sinking is provided at the opening of the cylindrical hole on each vertical surface.

[0098] Furthermore, the sink is arranged at the opening of the cylindrical hole on the vertical plane, and its central symmetry axis coincides with the central symmetry axis of the cylinder. Its diameter is 40 mm and its horizontal depth is 10 cm.

[0099] The present invention discloses an assembled composite airport pavement surface structure, wherein both the regular octagonal assembly block and the square assembly block are composed of a lower cement concrete layer and an upper asphalt concrete layer, and the upper and lower top views of the regular octagonal assembly block are both regular octagons, and the upper and lower top views of the square assembly block are both squares. The side lengths of the upper top views of the regular octagonal assembly block and the square assembly block are 2 cm shorter than the side lengths of the lower top views. Preferably, the lower side lengths of the regular octagonal assembly block and the square assembly block are both between 3 and 5 m, the thicknesses are both between 0.2 and 0.35 m, and the upper thicknesses are both between 0.06 and 0.1 m.

[0100] In the present invention, a prefabricated composite airport pavement surface structure is provided with cylindrical holes in the cement concrete of the lower layer of the regular octagonal assembly block, and a corrugated pipe with an inner diameter of 23 mm is buried in the hole. The openings of the cylindrical holes are distributed on the vertical planes where the two opposite sides of the regular octagon are located, and the cylindrical holes are horizontally and vertically penetrated from the opening on one vertical plane to the opening on the other vertical plane directly opposite, and the four vertical planes with circular hole openings are not adjacent to each other.

[0101] In the present invention, a prefabricated composite airport pavement surface structure is provided with cylindrical holes in the cement concrete of the lower layer of the square assembly block, and corrugated pipes with an inner diameter of 23 mm are buried in the holes, and the spacing between the corrugated pipes is kept consistent. The openings of the cylindrical holes are distributed on the vertical planes where the four sides of the square are located, and the cylindrical holes are horizontally and vertically penetrated from the opening on one vertical plane to the opening on another vertical plane directly opposite.

[0102] In the assembled composite airport pavement surface structure of the present invention, the center of the opening of each cylindrical hole in the lower layer of the regular octagonal assembly block and the square assembly block is 1 cm below the half thickness of the lower layer. The horizontal spacing between each cylindrical hole is the same. Preferably, the horizontal spacing between each cylindrical hole is between 15-50 cm.

[0103] The assembly method of the assembled composite airport pavement surface structure of the present invention is divided into the following steps:

[0104] S1: On the upper surface of the airport pavement base, the regular octagonal assembly blocks and B are assembled and combined, and a prestressed steel strand network is formed on the lower layer of each assembly block to form the lower layer of the assembled airport pavement;

[0105] S2: Fill the joints between the upper layers of each assembly block to form the middle surface layer of the assembled airport pavement;

[0106] S3: Spread a layer of asphalt concrete on the upper surface of the middle surface layer composed of each assembly block to form the upper layer of the assembled airport pavement.

[0107] In step S1, there are five assembly combinations between the five types of regular octagonal assembly blocks AI, A-II, A-III, A-IV, and AV and the five types of square assembly blocks BI, B-II, B-III, B-IV, and BV. When assembled and combined with each other, prestressed steel strands are passed through the holes of the cylinders in the lower layer of each assembly block, and they are interwoven in the horizontal and vertical directions to form a cross-shaped prestressed steel strand network. The same assembly block is assembled and combined with other surrounding assembly blocks in the horizontal and vertical directions:

[0108] ①A-BA: Use 7Φ5 specification prestressed steel strands to pass through the first regular octagonal assembly block, the square assembly block, and the second regular octagonal assembly block in sequence. After tensioning according to the prestressing setting requirements, anchor them on the corresponding vertical surfaces of the first and second regular octagonal assembly blocks, and grout them into the channel after the anchor is protected with end-sealed concrete. Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of B-II, B-IV, and BV.

[0109] ②B-AB: Use 7Φ5 specification prestressed steel strands to pass through the first square assembly block, the regular octagonal assembly block, and the second square assembly block in sequence. After tensioning according to the prestressing setting requirements, anchor them on the corresponding vertical surfaces of the first and second square assembly blocks, and grout them into the channel after the anchor is protected with end-sealed concrete. Among them, the regular octagonal assembly block is one of A-II, A-IV, and AV, and the square assembly block is one of BI, B-III, and B-IV.

[0110] ③A-B: Use 7Φ5 specification prestressed steel strands to pass through regular octagonal assembly blocks and square assembly blocks, and after tensioning according to the prestressing setting requirements, anchor them on the corresponding vertical surfaces of the regular octagonal assembly blocks and square assembly blocks, and grout them into the channel after protecting the anchor with end-capped concrete. Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of BI, B-III, and B-IV.

[0111] ④A: Use 7Φ5 prestressed steel strands to pass through the regular octagonal assembly block, tension according to the prestressing setting requirements, anchor on the two opposite vertical surfaces of the regular octagonal assembly block, and grout into the channel after protecting the anchor with end-sealed concrete. Among them, the regular octagonal assembly block is one of AI and A-II.

[0112] ⑤A: Use 7Φ5 prestressed steel strands to pass through the square assembly block, and after tensioning according to the prestressing setting requirements, anchor them on the two opposite vertical surfaces of the square assembly block, and grout them into the channel after protecting the anchor with end-capping concrete. Among them, the square assembly block is one of BI and B-II.

[0113] Furthermore, when assembling and combining the regular octagonal assembly blocks and B, starting from a vertex of the assembly area, the two assembly combination methods ABA and BAB are preferably used to assemble in the horizontal and vertical directions to form the airport pavement, and the lower vertical surfaces of adjacent assembly blocks are close together. In the horizontal and vertical directions, the combination methods of ABA and BAB are used alternately. When the assembly blocks cover the entire assembly area, if the remaining blocks to be inserted into the prestressed steel strands are both adjacent regular octagonal assembly blocks and square assembly blocks, the assembly combination method AB is used. If the remaining blocks to be inserted into the prestressed steel strands are only one regular octagonal assembly block or only one square assembly block, the assembly combination method A or the assembly combination method B is used.

[0114] Furthermore, since the side lengths of the upper top view of the regular octagonal assembly block and the square assembly block are 2 cm longer than the side lengths of the lower top view, and the lower vertical surfaces of the adjacent assembly blocks are in close contact, a 4 cm wide joint is formed between the upper vertical surfaces of the adjacent assembly blocks. The joint filling material described in step S2 is a polyurethane or asphalt mortar material, and the material should completely fill the joint and the upper surface of the filled joint should be on the same horizontal plane as the upper surface of the upper layer of the adjacent assembly block.

[0115] Preferably, the asphalt concrete layer added in step S3 has a thickness of 4-6 cm.

[0116] Furthermore, the edges of the airport pavement area formed by the assembly blocks after assembly are irregular. The largest rectangular area should be selected as the working area of ​​the prefabricated airport pavement, and the remaining edge parts should be divided outside the working area that can withstand aircraft loads.

[0117] Embodiment 1:

[0118] Fig.11 The assembly combination of each assembly block in a prefabricated airport pavement is shown. It can be seen that each assembly block is first assembled horizontally and vertically in a combination of ABA and BAB at intervals, and finally there is one adjacent regular octagonal assembly block and one square assembly block remaining in each horizontal row, and the assembly is performed in the AB combination. There is one regular octagonal assembly block or one square assembly block remaining in each vertical column, and the assembly is performed in the A or B combination.

[0119] Embodiment 2:

[0120] Fig.11 The assembly combination of each assembly block in a certain prefabricated airport pavement is shown. It can be seen that all 10 types of assembly blocks are first assembled horizontally and vertically in a combination of ABA and BAB at intervals, and finally there is one adjacent regular octagonal assembly block and one square assembly block remaining in each horizontal row, and the assembly is performed using the AB combination. There is one regular octagonal assembly block or one square assembly block remaining in each vertical column, and the assembly is performed using the A or B combination. In the resulting prefabricated airport pavement, all five assembly combinations of ABA, BAB, AB, A, and B are applied.

[0121] Embodiment three:

[0122] Fig.12 The assembly combination of each assembly block in a certain prefabricated airport pavement is shown. It can be seen that all 10 types of assembly blocks are first assembled horizontally and vertically in a combination of ABA and BAB at intervals, and finally all the horizontal rows are assembled. There is one regular octagonal assembly block or one square assembly block remaining in each vertical column, which is assembled using the A or B combination. The four assembly combinations of ABA, BAB, A, and B are applied in the resulting prefabricated airport pavement.

[0123] Embodiment 4:

[0124] Fig.13 The assembly combination of each assembly block in a certain prefabricated airport pavement is shown. It can be seen that the six assembly blocks A-III, A-IV, AV, B-III, B-IV, and BV are first assembled horizontally and vertically in a combination of ABA and BAB at intervals, and finally each horizontal row and each vertical column are fully assembled, and no other assembly is required. The resulting prefabricated airport pavement uses two assembly combination forms, ABA and BAB.

[0125] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An assembled composite airport pavement surface structure, characterized in that: The surface layer of the assembled pavement includes: square assembled blocks, regular octagonal assembled blocks, and overlay layers; A plurality of square assembly blocks and octagonal pavement assembly blocks are relatively spliced ​​along their edges and extended along a plane to form an airport pavement, and an additional layer is provided on the pavement laid by the square assembly blocks and the octagonal pavement assembly blocks; The square assembly blocks and the regular octagonal assembly blocks are composed of upper layers and lower layers of the same shape which are overlapped with each other; The area of ​​the lower layer is larger than that of the upper layer, and the lower layer and the edge of the lower layer are in a stepped structure.

2. The assembled composite airport pavement surface structure according to claim 1 is characterized in that: A plurality of cylindrical holes intersecting vertically and horizontally are arranged in the lower layer of the regular octagonal assembly block; a sinking platform is arranged on the vertical surface of the edge of the lower layer of the regular octagonal assembly block, and the sinking platform is connected with the cylindrical holes; According to the arrangement of the regular octagonal assembly blocks, the sinking platforms are divided into five categories: AI, A-II, A-III, A-IV, and AV; The AI-type regular octagonal assembly block is in the form of: a sinking portion is provided at the opening of the cylindrical hole on any three vertical planes in the lower layer, and a non-sinking portion vertical plane is spaced between every two adjacent sinking portions; The A-II type regular octagonal assembly block is in the form of: a sinking portion is provided at the opening of the cylindrical hole on any two vertical surfaces in the lower layer; the two vertical surfaces are arranged oppositely; The A-III regular octagonal assembly block has the following form: a sinking platform is provided at the opening of the cylindrical hole on any two vertical planes in the lower layer, and a non-sinking platform vertical plane is spaced between two adjacent sinking platforms; The form of the A-IV type regular octagonal assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any vertical surface of the lower layer; The form of the AV-type regular octagonal assembly block is that no sinking portion is provided at the opening of the cylindrical hole on each vertical surface in the lower layer.

3. The assembled composite airport pavement surface structure according to claim 1 is characterized in that: A plurality of cylindrical holes intersecting vertically and horizontally are arranged in the lower layer of the square assembly block; a sinking platform is arranged on the vertical surface of the edge of the lower layer of the square assembly block, and the sinking platform is connected with the cylindrical holes; According to the arrangement of the square assembly blocks, the sinking platforms are divided into five categories: BI, B-II, B-III, B-IV, and BV; The BI type square assembly block is: a sinking part is provided at the opening of the cylindrical hole on any three vertical surfaces in the lower layer; BI I type square assembly blocks are: sinking parts are provided at the openings of the cylindrical holes on any two adjacent vertical surfaces in the lower layer; The BI II type square assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any two oppositely arranged vertical surfaces in the lower layer; The B-IV type square assembly block is: a sinking portion is provided at the opening of the cylindrical hole on any vertical surface of the lower layer; The BV type square assembly block is as follows: no sinking part is arranged at the opening of the cylindrical hole on each vertical surface.

4. The assembled composite airport pavement surface structure according to claim 1 is characterized in that: The side length of the upper layer of the square assembly block or the regular octagonal assembly block is 3-5m; The side length of the lower layer of the square assembly block or regular octagonal assembly block is 3-5m; The plane width of the upper layer of the square assembly block or the regular octagonal assembly block is 2 cm shorter than the plane width of the lower layer; The thickness of the upper layer of the square assembly block or the regular octagonal assembly block is 0.06-0.1m; The thickness of the lower layer of the square assembly block or the regular octagonal assembly block is 0.2-0.35m; The upper layer of the square assembly block or the regular octagonal assembly block is a cement concrete layer; The upper and lower layers of the square assembly blocks or regular octagonal assembly blocks are asphalt concrete layers.

5. The structure of the assembled composite airport pavement surface layer according to claim 2 or 3, characterized in that: The sink is set at the opening of the cylindrical hole on the vertical plane, and its central symmetry axis coincides with the central symmetry axis of the cylinder. Its diameter is 40 mm and its horizontal depth is 10 cm.

6. The method for assembling an assembled composite airport pavement surface structure according to claim 1, characterized in that: The assembly method of the prefabricated pavement surface layer is divided into the following steps: S1: on the upper surface of the airport pavement base, square assembly blocks or regular octagonal assembly blocks are assembled and combined, and a prestressed steel strand network is formed on the lower layer of each assembly block to form the lower layer of the assembled airport pavement; S2: Fill the joints between the upper layers of each assembly block to form the middle layer of the complete assembled airport pavement; S3: Spread a layer of asphalt concrete on the complete prefabricated airport pavement composed of square assembly blocks or regular octagonal assembly blocks to form an overlay layer of the prefabricated airport pavement.

7. The method for assembling an assembled composite airport pavement surface structure according to claim 6, characterized in that: In step S1, the classification of regular octagonal assembly blocks is: AI, A-II, A-III, A-IV, AV; the classification of square assembly blocks is: BI, B-II, B-III, B-IV, BV; An assembly block is assembled and combined with other surrounding assembly blocks in the horizontal and vertical directions respectively in the following forms: (1) ABA form: The prestressed steel strands are sequentially passed through the first regular octagonal assembly block, the square assembly block, and the regular octagonal assembly block; after being tensioned according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the first and second regular octagonal assembly blocks, and grouting is performed in the hole after the anchor is protected with end-sealed concrete; Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of B-II, B-IV, and BV; (2) BAB form: The prestressed steel strands are sequentially passed through the first square assembly block, the regular octagonal assembly block, and the second square assembly block. After being tensioned according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the first and second square assembly blocks, and grouting is performed into the hole after the anchor is protected with end-sealed concrete. Among them, the regular octagonal assembly block is one of A-II, A-IV, and AV, and the square assembly block is one of BI, B-III, and B-IV; (3) AB: Prestressed steel strands are passed through the regular octagonal assembly blocks and the square assembly blocks. After tensioning according to the prestressing setting requirements, they are anchored on the corresponding vertical surfaces of the regular octagonal assembly blocks and the square assembly blocks, and grouting is performed into the hole after the anchor is protected with end-sealed concrete. Among them, the regular octagonal assembly block is one of AI, A-III, and A-IV, and the square assembly block is one of BI, B-III, and B-IV; (4) A: The prestressed steel strand is passed through the regular octagonal assembly block, tensioned according to the prestressing setting requirements, and then anchored on two opposite vertical surfaces of the regular octagonal assembly block, and grouting is performed in the hole after the anchor is protected with end-sealed concrete; the regular octagonal assembly block is one of AI and AI I; (5) A: Prestressed steel strands are passed through the square assembly block, tensioned according to the prestressing setting requirements, anchored on two opposite vertical surfaces of the square assembly block, and grouting is performed in the hole after the anchor is protected with end-capping concrete. The square assembly block is one of BI and B-II.

8. The method for assembling an assembled composite airport pavement surface structure according to claim 7, characterized in that: When assembling and combining the regular octagonal assembly blocks and the square assembly blocks, starting from one of the top corners of the assembly area defined by the airport pavement, the two assembly combination methods of ABA and BAB are preferably used to assemble in the horizontal and vertical directions to form the airport pavement, and the lower vertical surfaces of adjacent assembly blocks are closely attached; In the horizontal and vertical directions, the combination of ABA and BAB is used alternately; When the assembly blocks cover the entire assembly area, if the remaining blocks to be inserted into the prestressed steel strands are both adjacent regular octagonal assembly blocks and square assembly blocks, the assembly combination method AB is adopted; If the remaining blocks to be inserted into the prestressed steel strand only have one regular octagonal assembly block or only one square assembly block, assembly combination method A or assembly combination method B is adopted.

9. The method for assembling an assembled composite airport pavement surface structure according to claim 6, characterized in that: Since the side lengths of the upper plan views of the regular octagonal assembly blocks and the square assembly blocks are 2 cm longer than the side lengths of the lower plan views, and the lower vertical surfaces of adjacent assembly blocks are closely attached, a 4 cm wide joint is formed between the upper vertical surfaces of adjacent assembly blocks. The joint filling material in step S2 is a polyurethane or asphalt mortar material. The material completely fills the joint and the upper surface of the filled joint is on the same level as the upper surface of the upper layer of the adjacent assembly block.

10. The structural assembly method of the assembled composite airport pavement surface layer according to claim 6, characterized in that: In step S3, the additional layer is an asphalt concrete layer, and the thickness of the additional layer is 4-6 cm.

11. The method for assembling an assembled composite airport pavement surface structure according to claim 6 or 7, characterized in that: The largest rectangular area in the airport pavement area formed by assembling and combining the regular octagonal assembly blocks and the square assembly blocks is selected as the working area of ​​the assembled airport pavement.

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