Airport pavement non-stop rapid construction method and replacement structure

Abstract

The application belongs to the technical field of airport pavement repair and discloses an airport pavement non-stop rapid construction method and replacement structure, which comprises the following steps: replacement structure prefabrication: making the replacement structure in advance to adapt to the to-be-constructed pavement for standby; first construction: sequentially performing original pavement centralized milling, base treatment, replacement structure installation and working surface cleaning; second construction: sequentially performing replacement structure removal, base inspection, paving operation, curing, surface treatment and working surface cleaning. The replacement structure comprises a main plate, a waterproof bonding layer coated on the outer surface of the main plate, an anti-skid layer formed by embedding anti-skid particles on the surface of the waterproof bonding layer and an intelligent sensor embedded in the replacement structure. The application has the advantage that the replacement structure is installed and removed to disassemble the single-piece working mode into a two-day relay, thereby avoiding the conflict between the curing time and the flight operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of airport pavement repair, in particular to an airport pavement non-stop rapid construction method and a replacement structure. BACKGROUND

[0002] In the maintenance and reconstruction of airport pavements, non-stop construction is the core prerequisite for ensuring the continuity of air transportation. As an all-weather transportation hub, flights take off and land from early morning to late night, and construction can only be carried out in the short time gap between the end of night flights and the start of the next day's flights, usually less than 6 hours, with extremely strict time constraints.

[0003] Traditional airport pavement repair usually adopts a step-by-step single-block operation mode, and its core process is original pavement milling, base cleaning, repair material paving, and curing. For details, refer to the similar steps disclosed in the Chinese invention application "Airport Concrete Pavement Crack Repair Method" (application number 202011546476.7). However, this mode has significant limitations:

[0004] 1. Non-parallel processes: each step must be started after the previous step is completely finished, for example, the base after milling must be thoroughly cleaned before paving materials, and after paving, the next block operation must be performed after the curing is completed;

[0005] 2. Long curing time: fast-drying cement, polyurethane concrete and other commonly used materials require at least 1 hour or more of curing period, during which the pavement cannot carry load.

[0006] The strong dependency between processes and the time-consuming curing together lead to construction risks. If the pavement cannot be completely cured before the first flight of the next day, work should not be started on that day, otherwise it may cause serious consequences. This limitation makes the repair efficiency very low, and only a single block of pavement can be repaired per day, making it difficult to meet the demand for large-scale disease repair. SUMMARY

[0007] The first technical problem to be solved by the present application is to propose an airport pavement non-stop rapid construction method that can parallel processes to improve repair efficiency.

[0008] The second technical problem to be solved by the present application is to propose a replacement structure suitable for the above-mentioned airport pavement non-stop rapid construction method.

[0009] The technical solution adopted by the present application to solve the above technical problems is: an airport pavement non-stop rapid construction method, characterized by comprising the steps of:

[0010] S1 Replacement structure prefabrication: prepare replacement structures for the pavement to be constructed in advance;

[0011] S2 first construction: sequentially performing S2.1 original pavement concentrated milling, S2.2 base treatment, S2.3 replacement structure installation and S2.4 working face cleaning;

[0012] S3 second construction: sequentially performing S3.1 replacement structure removal, S3.2 base inspection, S3.3 paving operation, S3.4 curing, S3.5 surface treatment and S3.6 working face cleaning.

[0013] Compared with the prior art, the advantage of the present application is that the traditional process-by-process single-block operation mode is disassembled into a two-day relay by installing and removing the replacement structure, thereby avoiding the conflict between the curing time and the flight operation. Specifically, the processes of pavement milling and base treatment are completed at one time, and the replacement structure is installed as a temporary traffic surface to ensure that the flight can operate normally until the next shutdown window period; after the replacement structure is removed at the next window period, the new pavement is directly paved, and the curing is completed during the shutdown window period. By using this construction method, the first construction is not limited by the curing time, so that the entire pavement to be repaired can be fully milled during the shutdown period. In addition, the replacement structure is prefabricated, so that the construction time during the night is not occupied.

[0014] The replacement structure needs to meet the requirements of temporarily bearing the take-off and landing of the aircraft. Ordinary steel plates and plastic plates have basic strength, but their anti-skid performance is much lower than the airport standard, and they have no drainage design, and the steel plates are also prone to rust. If the reinforced concrete replacement structure is too thin, it is easy to be damaged under hoisting or aircraft load, and if it is thickened, it is heavy, needs large equipment for hoisting and position adjustment, and takes time, which cannot meet the short time requirement of non-stop construction. More importantly, the traditional structure lacks adaptability to complex environments: military airports need to withstand the strong impact of heavy transport aircraft, high-speed friction and the ablation of 2000 degrees Celsius tail flame of jet aircraft; coastal airports need to resist salt mist corrosion; highland airports need to resist strong ultraviolet performance; in winter deicing operation, it needs to resist the corrosion of deicing chemicals; and in daily use, it needs to resist oil pollution.

[0015] In order to meet the above requirements, as a preferred, the S1 replacement structure prefabrication includes the steps of:

[0016] S1.1 main plate preparation: preparing a main plate as a basic bearing structure;

[0017] S1.2 waterproof adhesive layer brushing: brushing a waterproof adhesive layer on the main plate;

[0018] S1.3 anti-skid particle scattering: scattering anti-skid particles to form an anti-skid layer when the waterproof adhesive layer has not yet cured, so that the surface texture meets the airport pavement structure depth requirement.

[0019] In order to realize remote monitoring, fault early warning and intelligent scheduling, as an optimization, the prefabrication of the S1 replacement structure further comprises a step S1.4 intelligent sensor embedding: embedding an intelligent sensor inside the replacement structure to monitor the state parameters of the replacement structure in real time.

[0020] Further, the S1.4 intelligent sensor embedding includes embedding an intelligent module integrated positioning chip, a deflection sensor, a wear sensor and a wireless communication unit, and the data of the intelligent sensor is transmitted to the construction management platform in real time.

[0021] In order to quickly complete the installation of the replacement structure, as an optimization, the S2.3 replacement structure installation comprises the steps of:

[0022] Using hoisting equipment to hoist the replacement structure to the milled pavement;

[0023] According to the instructions generated by the intelligent sensing system, quickly adjust the position and direction of the replacement structure to make it smoothly connected with the surrounding pavement;

[0024] After installation, check to ensure firm installation and smooth surface.

[0025] In order to quickly remove the replacement structure, as an optimization, the S3.1 replacement structure removal removes the replacement structure one by one by using permanent magnet hoisting equipment.

[0026] Further, the S2.3 replacement structure installation controls the pavement flatness error to be within 3mm, the S2.3 replacement structure installation controls the joint error with the surrounding pavement to be within 3mm, and the total time of the S2 first construction and the S3 second construction is controlled to be within 5-6 hours.

[0027] Specifically, the S2.1 original pavement centralized milling: using professional milling equipment to mill the airport pavement in a large area, the milling depth is determined according to the pavement disease condition and design requirements, and the flatness and uniformity of the milling surface need to be ensured during the milling process, providing a good foundation for the subsequent S2.3 replacement structure installation;

[0028] The S2.2 base treatment: after the milling is completed, the milled pavement is cleaned in time to remove milling debris, dust and sundries, and a layer of material with covering and buffering effect is laid after the cleaning is completed;

[0029] The S2.4 working surface cleaning: using tools to clean the residual debris, powder and dust in the construction area, and using a sweeper to fine wash.

[0030] Specifically, the S3.2 base layer inspection: after the tool is used for dust removal and cleaning, whether the base layer has a part that does not meet the construction condition is checked, and if so, it is handled in time;

[0031] The S3.3 paving operation: according to the design requirements and the construction specification, the paving equipment is used to uniformly pave the material on the pavement;

[0032] The S3.4 curing: after the paving is completed, the cone cylinder protection is arranged, the special person is arranged to take care of, the personnel and the vehicle are prevented from entering by mistake, and the traffic is opened after the strength reaches the standard;

[0033] The S3.5 surface treatment: the surface treatment machine is used to treat the pavement after the curing is completed, so that the surface of the pavement reaches the specified construction depth and flatness requirement.

[0034] As a solution to the second technical problem, the application provides a replacement structure applied to the airport pavement non-stop rapid construction method in any one of the above-mentioned embodiments, characterized in that it comprises:

[0035] A main plate;

[0036] A waterproof bonding layer coated on the outer surface of the main plate;

[0037] A non-slip layer formed by embedding non-slip particles on the surface of the waterproof bonding layer;

[0038] An intelligent sensor embedded in the inside of the replacement structure, the bottom of which is embedded in the main plate, the top of which penetrates the waterproof bonding layer and the non-slip layer, and the sensing end surface is flush with the outer surface of the non-slip layer.

[0039] The main plate is preferably a steel plate as the basic bearing structure of the replacement structure, which can provide sufficient strength and stiffness to withstand the load during the take-off and landing of the aircraft. The thickness of the main plate is reasonably selected according to the disease condition of the airport, the use level and the expected load, and the thickness is preferably 2-15 cm.

[0040] The waterproof bonding layer needs to have good elasticity and flexibility, which can adapt to the thermal expansion and cold contraction deformation of the structure due to the temperature difference between day and night and seasonal changes, avoiding cracking, peeling and falling off of the coating. At the same time, the waterproof bonding layer can enhance the adhesion between the non-slip layer and the main plate, ensuring that the non-slip layer will not fall off during use; the waterproof bonding layer can also act as a protective layer to isolate air and moisture, preventing the main plate from rusting, and its material is preferably polyurethane, epoxy resin material, which has the properties of salt mist resistance, ultraviolet resistance, chemical corrosion resistance, etc.

[0041] The anti-skid layer's particle size and material are specially selected, with quartz sand and ceramic particles being preferred. It can withstand the high-temperature flames from the tail nozzle of military aircraft and the high-speed friction of tires. Through this design, the surface texture depth can meet the standard requirement of airport pavement texture depth ≥1mm, allowing for rapid drainage of water even in rainy weather, ensuring the safety of aircraft takeoff and landing.

[0042] The intelligent sensor preferably integrates a positioning chip, wear sensor, deflection sensor and wireless communication unit to collect the positioning information, elevation deviation, load deflection and surface wear data of the replacement structure in real time, and transmits them wirelessly to the construction management platform to realize remote monitoring, fault early warning and intelligent scheduling. Attached Figure Description

[0043] Figure 1 This is a flowchart of the construction method according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the replacement structure according to an embodiment of the present invention;

[0045] Figure 3 This is a cross-sectional view of the replacement structure according to an embodiment of the present invention;

[0046] Figure 4 This is a plan view of the replacement structure according to an embodiment of the present invention. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0048] like Figures 1-4 As shown, this is a preferred embodiment of the airport pavement rapid construction method and replacement structure that does not require flight operation according to the present invention. Its core is the prefabrication of the replacement structure and phased construction, thereby controlling the total time of the first construction in S2 and the second construction in S3 to within 5-6 hours.

[0049] like Figure 1 The flowchart shown illustrates the construction method of this embodiment, which includes the following steps:

[0050] S1 Prefabricated replacement structure: Prefabricate replacement structures adapted to the pavement to be constructed in advance for later use;

[0051] S2 initial construction: S2.1 concentrated milling of the original pavement, S2.2 base treatment, S2.3 installation of replacement structure and S2.4 cleaning of working surface are carried out in sequence;

[0052] S3 Re-construction: Perform the following steps in sequence: S3.1 Replacement Structure Demolition, S3.2 Base Layer Inspection, S3.3 Paving Operation, S3.4 Curing and Solidification, S3.5 Surface Treatment, and S3.6 Working Surface Cleaning.

[0053] The first construction and the re-construction preferably adopt two adjacent non-operation window periods. Between the first construction and the re-construction, the airport can meet the load demand of the aircraft landing and taking off by relying on the temporary replacement structure.

[0054] The replacement structure of the embodiment mainly comprises a main plate 1, a waterproof adhesive layer 2 and an anti-skid layer 3, as shown in Figure 2 and Figure 3 . The replacement structure is in a plate-shaped structure, and the outer dimension thereof is preferably 4.48m x 1.66m, but is not limited to the above-mentioned dimension, and can be adjusted according to the actual construction demand.

[0055] The main plate 1 serves as the basic bearing structure of the replacement structure, and can provide sufficient strength and rigidity to bear the load during the aircraft taking off and landing, and is preferably a steel plate. The thickness of the main plate 1 is reasonably selected according to the disease condition of the airport, the use level and the load expected to be borne, and is preferably 2-15cm.

[0056] The waterproof adhesive layer 2 is coated on the outer surface of the main plate 1, and needs to have good elasticity and flexibility to adapt to the thermal expansion and contraction deformation of the structure due to the day and night temperature difference and seasonal change, so as to avoid the cracking, peeling and falling of the coating. Meanwhile, the waterproof adhesive layer 2 can enhance the adhesive force between the anti-skid layer 3 and the main plate 1, and ensure that the anti-skid layer 3 will not fall off during the use. The waterproof adhesive layer 2 can also serve as a protective layer to isolate air and moisture, and prevent the main plate 1 from rusting. The material of the waterproof adhesive layer 2 is preferably polyurethane or epoxy resin material, and has the properties of salt mist resistance, ultraviolet resistance, chemical corrosion resistance and the like.

[0057] The anti-skid layer 3 is formed by embedding anti-skid particles on the surface of the waterproof adhesive layer 2, and the particle size and material of the anti-skid layer 3 are specially selected, and quartz sand, ceramic particles and the like are preferably adopted, which can bear the high-temperature flame of the military aircraft tail nozzle and the high-speed friction of the tire. Through this design, the surface structure depth can reach the specification requirement of the airport pavement structure depth≥1mm, and even in rainy days, the accumulated water can be quickly drained to ensure the safety of the aircraft taking off and landing.

[0058] In order to realize remote monitoring, fault early warning and intelligent scheduling, the embodiment also embeds an intelligent sensor 4 in the replacement structure, as shown in Figure 3 and Figure 4 . The intelligent sensor 4 is embedded in the inside of the replacement structure, the bottom thereof is embedded into the main plate 1, the top thereof penetrates through the waterproof adhesive layer 2 and the anti-skid layer 3, and the sensing end surface is flush with the outer surface of the anti-skid layer 3. The intelligent sensor 4 preferably integrates a positioning chip, a wear sensor, a deflection sensor and a wireless communication unit, and can collect the positioning information, the elevation deviation, the load deflection and the surface wear data of the replacement structure in real time, and transmit the data to the construction management platform through wireless transmission, so as to realize remote monitoring, fault early warning and intelligent scheduling.

[0059] The S1 replacement structure prefabrication of the embodiment needs to be performed in sequence: S1.1 main plate preparation, S1.2 waterproof adhesive layer brushing, S1.3 anti-slip particle scattering to form an anti-slip layer 3, and S1.4 embedding of intelligent sensors. Specifically: first, prepare a suitable main plate 1 according to the disease situation, usage level and expected load of the airport; then evenly brush a layer of waterproof adhesive material on the upper surface of the main plate 1 as a waterproof structure layer; while the waterproof adhesive layer 2 is not yet cured, evenly scatter anti-slip material on the waterproof adhesive layer 2, so that the anti-slip material is embedded therein to form an anti-slip layer 3; embed the intelligent sensor 4 in the replacement structure to monitor the positioning, elevation, deflection and surface wear of the replacement structure in real time.

[0060] After the S1 replacement structure is prefabricated, the first construction S2 begins during the airport's shutdown window period:

[0061] S2.1 Original pavement concentrated milling: first, use professional milling equipment to mill the airport pavement on a large scale. The milling depth is determined according to the pavement disease situation and design requirements. During the milling process, the flatness and uniformity of the milled surface need to be ensured to provide a good foundation for the subsequent installation of the replacement structure S2.3.

[0062] S2.2 Base treatment: after milling is completed, the milled pavement is cleaned in a timely manner to remove milling debris, dust and other debris. Use a sweeper, air blower and other equipment to clean up, ensuring that the pavement is clean and tidy, free of obstacles that affect the installation and use of the replacement structure S2.3. After cleaning is complete, a layer of material with covering and buffering effects can be laid, preferably geotextile, which can block the base gravel from extruding from the gap and also serve as a buffer to disperse the load.

[0063] S2.3 Replacement structure installation: use permanent magnet lifting equipment to lift the replacement structure to the milled pavement. The permanent magnet lifting equipment has strong adsorption force, stable lifting, and can prevent the lifting structure from being damaged due to stress concentration. Combined with the intelligent sensor 4, it can quickly and accurately place the replacement structure in the predetermined position, and can complete the installation of large-area replacement structures in a short time. When placing the replacement structure, according to the instructions generated by the intelligent sensing system, quickly adjust the position and direction of the replacement structure to ensure smooth connection with the surrounding pavement. After the replacement structure is installed, it needs to be checked to ensure that it is firmly installed and the surface is flat. The flatness error of the pavement after the replacement structure is installed is ≤3mm, and the joint error between the replacement structure and the surrounding pavement during installation is ≤3mm.

[0064] S2.4 Work surface cleaning: after all the replacement structures are laid, use a dust collector, air blower and other tools to clean up the residual debris, powder and dust in the construction area, and then use a sweeper to fine wash.

[0065] S2 first construction is completed, the airport through the replacement of the structure of temporary bearing aircraft landing, maintain the normal operation of the airport until the next day to the shutdown window period begins S3 construction again:

[0066] S3.1 replacement of the structure of removal: S3.3 paving operation, using permanent magnet lifting equipment will be replaced with the structure of one by one lifting removal. Lifting process need careful operation, to avoid the replacement of the structure and the surrounding pavement collision damage, and can be completed in a short period of time large area replacement of the structure of removal. Removal process without structural damage, after removal of the number of reuse ≥ 100 times.

[0067] S3.2 base inspection: using dust collector, hair dryer and other tools to clean up, check whether the base has not meet the construction conditions of the site, if any need to be treated in time.

[0068] S3.3 paving operation: S3.1 replacement of the structure of removal, immediately after the paving operation of the pavement. In accordance with the design requirements and construction specifications, using paving equipment to evenly spread the material on the pavement, and then carry on the follow-up process such as curing, surface treatment, complete large area pavement repair and reconstruction.

[0069] S3.4 curing solidification: paving is completed after the setting of the cone protection, arrange special care, prevent personnel, vehicle misentry. After the strength is up to the standard, open traffic.

[0070] S3.5 surface treatment: using surface treatment machinery to deal with the curing of the pavement (such as grinding), so that the surface of the plate to achieve the specified depth and flatness requirements.

[0071] S3.6 work surface cleaning: all replacement of the structure of the completion of the paving, the construction area of the remaining debris, powder, dust using dust collector, hair dryer and other tools to clean up, and use the sweeper fine washing.

Claims

1. A rapid construction method for airport pavement without interrupting flight operations, characterized in that, Including the following steps: S1 Prefabricated replacement structure: Prefabricate replacement structures adapted to the pavement to be constructed in advance for later use; S2 initial construction: S2.1 concentrated milling of the original pavement, S2.2 base treatment, S2.3 installation of replacement structure and S2.4 cleaning of working surface are carried out in sequence; S3 Re-construction: Perform the following steps in sequence: S3.1 Removal of the replacement structure, S3.2 Base layer inspection, S3.3 Paving operation, S3.4 Curing and hardening, S3.5 Surface treatment and S3.6 Cleaning of the working surface; Among them, the pavement flatness error after the installation of the S2.3 replacement structure is controlled within 3mm, the joint error between the S2.3 replacement structure and the surrounding pavement is controlled within 3mm, and the total time for the first construction of S2 and the second construction of S3 is controlled within 5 hours or 6 hours. The prefabrication of the S1 replacement structure includes the following steps: S1.1 Motherboard Preparation: Prepare the motherboard as the basic load-bearing structure; S1.2 Waterproof Adhesive Layer Application: Apply a waterproof adhesive layer to the motherboard; S1.3 Anti-slip particle application: Before the waterproof adhesive layer has cured, anti-slip particles are applied to form an anti-slip layer, and its surface texture must meet the airport pavement construction depth requirements; The S1 replacement structure prefabrication also includes S1.4 smart sensor embedding: smart sensors are embedded inside the replacement structure to monitor the status parameters of the replacement structure in real time; The S1.4 smart sensor embedding includes an embedded smart module integrating a positioning chip, a deflection sensor, a wear sensor, and a wireless communication unit. The data from the smart sensor is transmitted to the construction management platform in real time.

2. The method for rapid construction of airport pavement without interrupting flight operations according to claim 1, characterized in that, The installation of the S2.3 replacement structure includes the following steps: The replacement structure was lifted onto the milled pavement using hoisting equipment. Based on the instructions generated by the intelligent sensing system, the position and orientation of the replacement structure are adjusted to ensure smooth connection with the surrounding pavement. After installation, inspect the equipment to ensure it is securely installed and the surface is flat.

3. The method for rapid construction of airport pavement without interrupting flight operations according to claim 1, characterized in that, The S3.1 replacement structure removal process involves using permanent magnet hoisting equipment to remove the replacement structures one by one.

4. The method for rapid construction of airport pavement without interrupting flight operations according to claim 1, characterized in that, The S2.1 original pavement concentrated milling: large-area concentrated milling of the airport pavement is carried out using professional milling equipment. The milling depth is determined according to the pavement defects and design requirements. During the milling process, the flatness and uniformity of the milled surface must be ensured to provide a good foundation for the subsequent installation of the S2.3 replacement structure. The S2.2 base treatment: After milling, the milled pavement should be cleaned in a timely manner to remove milling debris, dust and debris. A sweeper and blower should be used for cleaning to ensure that the pavement is clean and tidy and free of obstacles that may affect the installation and use of the replacement structure. After cleaning, a layer of material with covering and buffering functions can be laid. The S2.4 working surface cleaning: Use tools to clean up residual debris, powder and dust in the construction area, and then use a sweeper to thoroughly wash it.

5. The method for rapid construction of airport pavement without interrupting flight operations according to claim 1, characterized in that, S3.2 Base layer inspection: After cleaning and removing dust with tools, check whether there are any parts of the base layer that do not meet the construction conditions. If so, they need to be dealt with in time. The S3.3 paving operation: In accordance with the design requirements and construction specifications, use paving equipment to evenly spread the material on the pavement surface; S3.4 Curing and solidification: After paving is completed, cone protection is set up and a dedicated person is assigned to guard it to prevent people and vehicles from accidentally entering. Traffic is opened after the strength meets the standard. The S3.5 surface treatment: The surface of the road surface after curing is treated with surface treatment machinery to make the surface of the road slab meet the specified structural depth and flatness requirements.

6. A replacement structure, used in the rapid construction method for airport pavement without interrupting flight operations as described in any one of claims 1 to 5, characterized in that, include: Motherboard; A waterproof adhesive layer is applied to the outer surface of the motherboard; The anti-slip layer is formed by embedding anti-slip particles on the surface of the waterproof adhesive layer; The intelligent sensor is embedded inside the replacement structure. Its bottom is embedded in the motherboard, and its top penetrates the waterproof adhesive layer and the anti-slip layer. The sensing end face is flush with the outer surface of the anti-slip layer.

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