A BIM-based airport pavement disease information integrated management method and system

Abstract

A method and system for integrated management of airport pavement defect information based on BIM. The system includes an airport pavement BIM entity library, an airport pavement model processing unit, an airport pavement defect management unit, and a visualization unit. Effects of the present invention: The airport pavement BIM entity library is formed in the IFC file format to realize information integration, evaluation, display and dynamic update of airport pavement defects. Through a multi-dimensional indicator algorithm, the pavement evaluation results are analyzed and decided. In combination with historical repair data and relying on the BIM model, a reasonable pavement repair plan is provided. Based on the IFC file format, the present invention realizes the transmission, sharing and dynamic update of airport runway model information and defect management information, which can improve the pavement operation and maintenance efficiency, reduce the pavement operation and maintenance costs, and realize digital and efficient management of airport pavement defects.

Description

Technical Field

[0001] The present invention belongs to the field of BIM technology for airport engineering, and specifically relates to a method and system for integrated management of airport pavement defect information based on BIM (Building Information Modeling). Background Art

[0002] Airport pavements, the paved surfaces used for aircraft takeoff, landing, taxiing, parking, and maintenance, are the most crucial infrastructure within the airfield and play a central role in airport operations. However, pavements are inevitably damaged by various factors during use. Inadequate maintenance, coupled with an increasing number of aircraft and takeoffs and landings, leads to long-term wear and tear on the pavement, impacting its performance and service life. This, in turn, increases airport maintenance costs and aircraft operating costs.

[0003] Currently, airport pavement defects are widespread, with particularly prominent issues such as durable cracks, broken joints, sanding, exposed pavement, and insufficient roughness. These defects accelerate runway degradation and exacerbate the severity of the problem, posing a significant threat to aircraft flight safety. With the ongoing modernization of my country and the rapid development of airport construction, the scale of airport pavements has expanded, significantly increasing the scope of airport pavement maintenance and the pressure on runway safety operations. The traditional manual operation and maintenance model for runways at airports, characterized by low efficiency, high costs, and insufficient decision-making information support, is unable to meet the needs of rapidly developing airport pavements and cannot keep abreast of the dynamic damage status of airport pavements. A shift to a digital management model is urgently needed. While major airports have developed pavement management systems in recent years, most have relied on GIS maps to develop electronic runway ledger management functions, resulting in a lack of systematic and in-depth digital management technology.

[0004] BIM (Building Information Modeling) technology, first proposed by the US company Autodesk in 2002, is a newly emerging visualization tool for the entire process of building design, construction, and operations management. It integrates building parameter information to form a digital information model, which is then shared and transmitted throughout the building lifecycle. BIM technology has attracted significant attention and widespread interest in the construction industry in recent years due to its integrity, interoperability, data simulation, and collaboration, as well as its distinct technical features and application advantages. National and local governments are stepping up efforts to promote the application of BIM technology in the construction sector, issuing a series of policy documents. The Ministry of Housing and Urban-Rural Development issued the "Uniform Standard for the Application of Building Information Modeling (GB / T51212-2016)," the first to codify the application of BIM technology in the construction sector. Therefore, the policy and technical conditions for the application of BIM technology are currently in place. BIM technology can realize information transmission throughout the entire life cycle of an airport, achieve information collaboration among different disciplines, and efficiently manage pavement defect data. However, there is currently a lack of systematic integrated management methods and professional systems for airport pavement management systems using BIM technology, and there are few successful cases of the application of IFC technical standards in airport airfields. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a BIM-based airport pavement defect information integrated management method and system, which can effectively and dynamically manage and analyze airport pavement defect information, reduce airport operation risks, improve management efficiency, and realize the full life cycle management of airport runways.

[0006] To achieve the above objectives, the present invention provides a BIM-based airport pavement defect information integrated management method comprising the following steps performed in sequence:

[0007] Step S0: Determine whether the runway information model of the airport to be managed already exists. The file format of the runway information model includes common BIM file formats such as .rvt, CATProduct, and .ifc. If the judgment result is yes, proceed to step S2; otherwise, proceed to step S1;

[0008] Step S1: Establish a refined airport pavement geometry information model based on project information, where the project information includes three types of data: 2D CAD drawings, field measurement data, and laser point cloud data. The airport pavement geometry information model should reflect the slope, plane dimensions, cross-sectional information, and dimensions of each structural layer of the actual pavement.

[0009] Step S2: Check the compliance of the airport pavement geometry information, including slope, plane dimensions, cross-sectional information, and dimensions of each structural layer, to see if they are consistent with the runway of the airport to be managed. If so, proceed to step S3; otherwise, return to step S1.

[0010] Step S3: Check the airport pavement attribute information for compliance. The check includes whether the airport pavement geometry information model has structural parameter information attributes, disease information attributes, evaluation information attributes, processing decision information attributes, and maintenance information attributes that meet the operation and maintenance requirements. If not, proceed to step S4; otherwise, proceed to step S5.

[0011] Step S4: Adding attribute information that can support pavement disease management to the airport pavement geometric information model, wherein the attribute information includes structural parameter information, disease information, evaluation information, processing decision information, and maintenance information, to form a BIM model with complete geometric and attribute information;

[0012] Step S5: Export the BIM model as an IFC file, and use the IFC file as a shared data source in the BIM operation and maintenance process;

[0013] Step S6: parse the IFC file using an IFC file parser to obtain geometric information and non-geometric information in the IFC file;

[0014] Step S7: Check the parsed IFC file for loss of geometric information and attribute information, batch add and update attribute information sets required for pavement operation and maintenance, and form an airport pavement BIM entity library;

[0015] Step S8: reading the IFC file generated in the airport pavement BIM entity library, extracting the pavement geometry information and disease information therein, and performing a pavement evaluation to obtain a pavement evaluation result;

[0016] Step S9: Analyze and decide on the road surface evaluation results to determine whether they meet the safety operation requirements. If the judgment result is yes, proceed to step S10; otherwise, proceed to step S11;

[0017] Step S10: Continuously monitor the airport pavement damage and service status, and promptly obtain the latest information required for updating the airport pavement information model, and then return to step S7;

[0018] Step S11: extracting the location, damage type, damage severity, and damage development information of the pavement panel blocks that affect the normal operation of the pavement in the IFC file to form the basic conditions for pavement repair;

[0019] Step S12: Repair the pavement without stopping flights until it meets the safe operation conditions after evaluation, and then return to step S7 to update and dynamically manage the information of the airport pavement BIM entity library.

[0020] In step S1, the airport pavement geometric information model is assembled from a pavement structure unit family, which is vertically composed of a surface layer, a base layer, a subbase layer, and a cushion layer. The pavement structure unit family adopts structured geometric parameters, which include unit length, unit width, unit slope, and unit material.

[0021] In step S4, the structural parameter information is added to the pavement structure unit family by adding family type parameters, and the disease information, evaluation information, processing decision information and maintenance information are added to the pavement structure unit family by adding family instance parameters.

[0022] In step S5, the IFC file extends the airfield structure entity IfcAirfieldAreaStructureElement, and the airfield structure entity pre-extends the runway structure pavement IfcRunwayStructurePavement, shoulder IfcShoulder, lift strip IfcRunwayStrip, blow-off pad IfcRunwayBlastPad, runway end safety area IfcRunwayAndSafetyArea, clearway IfcClearway, and stopway IfcStopway entities, and the airfield structure entity is extended with Express-G graphics.

[0023] In step S7, the batch addition and update of the attribute information set required for pavement operation and maintenance is achieved by calling an electronic form with the help of visual programming technology.

[0024] In step S8, the pavement is divided into several pavement evaluation units during the pavement evaluation. The pavement evaluation unit is a single pavement panel or an artificially demarcated evaluation area. The evaluation content includes the pavement disease risk level, structural condition index, pavement condition index, pavement grade number, aircraft grade number, joint load transfer capacity information and remaining service life.

[0025] In step S9, the following formula is used to analyze and make decisions on the road surface evaluation results:

[0026]

[0027] Among them, P evaluation It represents the comprehensive analysis result of the usage status of a road surface evaluation unit, E risklevel , E CI , E PCN , E LTEThey respectively represent the results of judgment based on the pavement disease risk level, condition index, pavement grade number, and joint load transfer capacity. 1 means that the evaluation unit needs to be repaired and performance improved, and 0 means that no maintenance is required and continuous monitoring is required; risklevel represents the pavement disease risk level code, SCI represents the structural condition index, PCI represents the pavement condition index, PCN represents the pavement grade number, ACN represents the aircraft grade number, and LTE represents the joint load transfer capacity, which is 100 times the ratio of the deflection of the unloaded plate of the rigid pavement at 150 mm from the joint to the deflection of the loaded plate at 150 mm from the joint measured by a weight-type deflectometer; the pavement disease risk level code risklevel is divided into seven levels, and the code uses Arabic numerals 0 to 6, where 0 represents extremely poor, 1 represents poor, 2 represents moderately poor, 3 represents moderate, 4 represents moderately good, 5 represents good, and 6 represents excellent.

[0028] In step S12, before the runway is repaired without stopping flights, a neural network method is first used to match the optimal repair method, and then a BIM model is used to simulate and pre-analyze the construction of the runway before the runway is repaired without stopping flights.

[0029] The BIM-based airport pavement disease information integrated management system provided by the present invention includes an airport pavement BIM entity library, an airport pavement model processing unit, an airport pavement disease management unit and a visualization unit;

[0030] The airport pavement BIM entity library includes an IFC file information recognition module, a model view definition module, an attribute information addition module, and a geometric information update module;

[0031] The IFC file information identification module is used to identify the airport pavement IFC file and extract key information;

[0032] The model view definition module is used to define the information requirements of different application scenarios of airport pavement, so as to quickly classify and extract the information required for the application;

[0033] The attribute information adding module is used to add and dynamically update the attribute information required for pavement operation and maintenance;

[0034] The geometric information updating module is used to update the pavement geometric information after the pavement geometric information changes, so as to dynamically update the BIM model.

[0035] The airport pavement model processing unit includes a point cloud data processing module, a CAD drawing processing module, a BIM model import module, and an IFC file parsing module; it is used to provide data support for the airport pavement BIM entity library, provide an interface for the airport pavement BIM entity library to the outside world, and provide support for other applications of the pavement information model;

[0036] The airport pavement disease management unit includes a disease information statistics module, a disease evaluation and analysis module, a disease treatment decision module and a historical disease query module;

[0037] The disease information statistics module is used to collect statistics on various types of disease information on the airport pavement, and the statistical information includes the type of disease, the number of diseases and the degree of disease;

[0038] The disease evaluation and analysis module is used to analyze and evaluate the manifestations of various pavement diseases and to quantitatively analyze the pavement's airworthiness;

[0039] The disease treatment decision module is used to make a comprehensive judgment on the results of the disease evaluation and analysis module, provide treatment plan suggestions based on historical data and engineering experience, and record decision information;

[0040] The historical damage query module is used to store historical damage information and damage treatment methods of the pavement, forming a pavement historical damage database for real-time query and providing support for the damage evaluation and analysis module.

[0041] The disease evaluation and analysis module is divided into a cement concrete pavement disease evaluation and analysis submodule and an asphalt pavement disease evaluation and analysis submodule;

[0042] The cement concrete pavement disease evaluation and analysis submodule is used to realize information carrying and analysis based on the BIM model, including surface cracking, corner fractures, broken plates or cross cracks, subsidence or misalignment, expansion cracking, filler damage, joint crushing, mud pumping and slab bottom voiding, durability cracks, shrinkage cracks, potholes, peeling, cracking, micro cracks, slab corner peeling, small patches, large patches or excavation patches, PCI / SCI, PCN / ACN, joint load transfer capacity, remaining service life, and pavement disease risk level;

[0043] The asphalt pavement disease evaluation and analysis submodule is used to realize information carrying and analysis based on the BIM model, and its contents include cracking, irregular cracks, longitudinal cracks, transverse cracks, reflective cracks, sliding cracks, looseness and aging, oil overflow, aggregate polishing, subsidence, ridges, wheel rutting, washboarding, pushing, jet ablation, oil corrosion, patches and excavation blocks, PCI / SCI, PCN / ACN, remaining service life and pavement disease risk level.

[0044] The visualization unit includes a pavement information display module, a disease statistics display module, a disease assessment risk display module, and a disease treatment progress display module, which are used to display pavement disease information in real time, facilitating intuitive decision-making and management by managers;

[0045] The pavement information display module is used to display basic geometric information and attribute information of the airport pavement, which covers the design, construction and operation and maintenance stages of the airport runway;

[0046] The disease statistics display module is used to dynamically display pavement disease data;

[0047] The disease assessment risk display module is used to dynamically display the pavement disease assessment results and risk levels;

[0048] The disease treatment progress display module is used to dynamically display the pavement disease treatment construction plan, treatment construction progress and non-stop construction conditions.

[0049] The beneficial effects of the present invention are:

[0050] 1) Based on the IFC file format, the system enables the transmission, sharing, and collaboration of airport pavement geometry information and defect management information. Based on BIM technology, it enables the modeling integration and management of runway information during the design, construction, and operation and maintenance phases, thus enabling the full lifecycle information transmission of the airport runway and taxiway system.

[0051] 2) For cement concrete and asphalt pavements, damage information, PCI / SCI, PCN / ACN, joint load transfer capacity, remaining service life, and pavement damage risk level are integrated into the BIM model to conduct a multi-dimensional comprehensive evaluation of pavement operation risks. A historical damage information query module is used to assist in decision-making, effectively improving the operational safety of airport runway structures.

[0052] 3) Through the visualization unit, three-dimensional real-time visualization of pavement disease information is achieved; through the airport pavement BIM entity library, the pavement geometry information and attribute information are dynamically updated based on IFC file parsing, realizing the preliminary twinning of the airport pavement structure, improving operation and maintenance efficiency, reducing pavement operation and maintenance costs, and realizing digital and efficient management of airport pavement diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a flow chart of a BIM-based airport pavement defect information integrated management method provided by an embodiment of the present invention;

[0054] Figure 2 This is a schematic diagram of the structure of a BIM-based airport pavement disease information integrated management system provided by an embodiment of the present invention;

[0055] Figure 3 This is a schematic structural diagram of a cement concrete pavement disease evaluation and analysis submodule in a BIM-based airport pavement disease information integrated management system provided by an embodiment of the present invention;

[0056] Figure 4 It is a structural schematic diagram of the asphalt pavement disease evaluation and analysis submodule in the BIM-based airport pavement disease information integrated management system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention.

[0058] like Figure 1 As shown, the BIM-based airport pavement defect information integrated management method provided by the embodiment of the present invention includes the following steps performed in sequence:

[0059] Step S0: Determine whether the runway information model of the airport to be managed already exists. The file format of the runway information model includes common BIM file formats such as .rvt, CATProduct, and .ifc. If the judgment result is yes, proceed to step S2; otherwise, proceed to step S1;

[0060] Step S1: Establish a refined airport pavement geometry information model based on project information, where the project information includes three types of data: 2D CAD drawings, field measurement data, and laser point cloud data. The airport pavement geometry information model should reflect the slope, plane dimensions, cross-sectional information, and dimensions of each structural layer of the actual pavement.

[0061] The airport pavement geometric information model is assembled from a pavement structure unit family, which is vertically composed of a surface layer, a base layer, a subbase layer, and a cushion layer. The pavement structure unit family adopts structured geometric parameters, which include unit length, unit width, unit slope, and unit material.

[0062] Step S2: Check the compliance of the airport pavement geometry information, including slope, plane dimensions, cross-sectional information, and dimensions of each structural layer, to see if they are consistent with the runway of the airport to be managed. If so, proceed to step S3; otherwise, return to step S1.

[0063] Step S3: Check the airport pavement attribute information for compliance. The check includes whether the airport pavement geometry information model has structural parameter information attributes, disease information attributes, evaluation information attributes, processing decision information attributes, and maintenance information attributes that meet the operation and maintenance requirements. If not, proceed to step S4; otherwise, proceed to step S5.

[0064] Step S4: Adding attribute information that can support pavement disease management to the airport pavement geometric information model, wherein the attribute information includes structural parameter information, disease information, evaluation information, processing decision information, and maintenance information, to form a BIM model with complete geometric and attribute information;

[0065] The structural parameter information is added to the pavement structure unit family by adding family type parameters, and the disease information, evaluation information, processing decision information and maintenance information are added to the pavement structure unit family by adding family instance parameters.

[0066] Step S5: Export the BIM model as an IFC file, and use the IFC file as a shared data source in the BIM operation and maintenance process;

[0067] The IFC file extends the airfield structure entity IfcAirfieldAreaStructureElement, and the airfield structure entity pre-extends the runway structure pavement IfcRunwayStructurePavement, shoulder IfcShoulder, lift strip IfcRunwayStrip, blowout pad IfcRunwayBlastPad, runway end safety area IfcRunwayAndSafetyArea, clearway IfcClearway and stopway IfcStopway entities, and the airfield structure entity is extended with Express-G graphics.

[0068] Step S6: parse the IFC file using an IFC file parser to obtain geometric information and non-geometric information in the IFC file;

[0069] Step S7: Check the parsed IFC file for loss of geometric information and attribute information, batch add and update attribute information sets required for pavement operation and maintenance, and form an airport pavement BIM entity library;

[0070] The batch adding and updating of the attribute information sets required for pavement operation and maintenance is achieved by calling electronic forms with the help of visual programming technology.

[0071] Step S8: reading the IFC file generated in the airport pavement BIM entity library, extracting the pavement geometry information and disease information therein, and performing a pavement evaluation to obtain a pavement evaluation result;

[0072] When performing the pavement evaluation, the pavement is divided into several pavement evaluation units. The pavement evaluation unit is a single pavement panel or an artificially demarcated evaluation area. The evaluation content includes the pavement disease risk level, structural condition index, pavement condition index, pavement grade number, aircraft grade number, joint load transfer capacity information and remaining service life.

[0073] Step S9: Analyze and decide on the road surface evaluation results to determine whether they meet the safety operation requirements. If the judgment result is yes, proceed to step S10; otherwise, proceed to step S11;

[0074] The following formula is used to analyze and make decisions on the pavement evaluation results:

[0075]

[0076] Among them, P evaluation It represents the comprehensive analysis result of the usage status of a road surface evaluation unit, E risklevel , E CI , E PCN , E LTE They respectively represent the results of judgment based on the pavement disease risk level, condition index, pavement grade number, and joint load transfer capacity. 1 means that the evaluation unit needs to be repaired and performance improved, and 0 means that no maintenance is required and continuous monitoring is required; risklevel represents the pavement disease risk level code, SCI represents the structural condition index, PCI represents the pavement condition index, PCN represents the pavement grade number, ACN represents the aircraft grade number, and LTE represents the joint load transfer capacity, which is 100 times the ratio of the deflection of the unloaded plate of the rigid pavement at 150 mm from the joint to the deflection of the loaded plate at 150 mm from the joint measured by a weight-type deflectometer; the pavement disease risk level code risklevel is divided into seven levels, and the code uses Arabic numerals 0 to 6, where 0 represents extremely poor, 1 represents poor, 2 represents moderately poor, 3 represents moderate, 4 represents moderately good, 5 represents good, and 6 represents excellent.

[0077] Step S10: Continuously monitor the airport pavement damage and service status, and promptly obtain the latest information required for updating the airport pavement information model, and then return to step S7;

[0078] Step S11: extracting the location, damage type, damage severity, and damage development information of the pavement panel blocks that affect the normal operation of the pavement in the IFC file to form the basic conditions for pavement repair;

[0079] Step S12: Repair the pavement without stopping flights until it meets the safe operation conditions after evaluation, and then return to step S7 to update and dynamically manage the information of the airport pavement BIM entity library.

[0080] Before the runway is repaired without stopping flights, a neural network method is first used to match the optimal repair method, and then a BIM model is used to simulate and pre-analyze the construction of the runway without stopping flights, and then the runway is repaired without stopping flights.

[0081] like Figure 2-4 As shown, the BIM-based airport pavement disease information integrated management system provided by the embodiment of the present invention includes an airport pavement BIM entity library 1, an airport pavement model processing unit 2, an airport pavement disease management unit 3 and a visualization unit 4;

[0082] The airport pavement BIM entity library 1 includes an IFC file information identification module 11, a model view definition module 12, an attribute information addition module 13 and a geometry information update module 14;

[0083] The IFC file information identification module 11 is used to identify the airport pavement IFC file and extract key information;

[0084] The model view definition module 12 is used to define the information requirements of different application scenarios of airport pavement, so as to quickly classify and extract the information required for the application;

[0085] The attribute information adding module 13 is used to add and dynamically update the attribute information required for pavement operation and maintenance;

[0086] The geometric information updating module 14 is used to update the pavement geometric information after the pavement geometric information changes, so as to dynamically update the BIM model.

[0087] The airport pavement model processing unit 2 includes a point cloud data processing module 21, a CAD drawing processing module 22, a BIM model import module 23, and an IFC file parsing module 24; it is used to provide data support for the airport pavement BIM entity library 1, provide an interface for the airport pavement BIM entity library 1 to the outside world, and provide support for other applications of the pavement information model;

[0088] The airport pavement disease management unit 3 includes a disease information statistics module 31, a disease evaluation and analysis module 32, a disease treatment decision module 33 and a historical disease query module 34;

[0089] The disease information statistics module 31 is used to collect statistics on various types of disease information on the airport pavement, and the statistical information includes the type of disease, the number of diseases and the degree of disease;

[0090] The disease evaluation and analysis module 32 is used to analyze and evaluate the manifestations of various pavement diseases and to quantitatively analyze the pavement's airworthiness;

[0091] The disease treatment decision module 33 is used to make a comprehensive judgment on the results of the disease evaluation and analysis module 32, provide treatment plan suggestions based on historical data and engineering experience, and record decision information;

[0092] The historical damage query module 34 is used to store historical damage information and damage treatment methods of the pavement, forming a pavement historical damage database for real-time query and providing support for the damage evaluation and analysis module 32.

[0093] The disease evaluation and analysis module 32 is divided into a cement concrete pavement disease evaluation and analysis submodule C32 and an asphalt pavement disease evaluation and analysis submodule R32;

[0094] The cement concrete pavement disease evaluation and analysis submodule C32 is used to realize information carrying and analysis based on the BIM model, including surface cracking, corner fractures, broken plates or cross cracks, subsidence or misalignment, expansion cracks, filler damage, joint crushing, mud pumping and slab bottom voiding, durability cracks, shrinkage cracks, potholes, peeling, cracking, micro cracks, slab corner peeling, small patches, large patches or excavation patches, PCI / SCI, PCN / ACN, joint load transfer capacity, remaining service life, and pavement disease risk level;

[0095] The asphalt pavement disease evaluation and analysis submodule R32 is used to realize information carrying and analysis based on the BIM model, including cracking, irregular cracks, longitudinal cracks, transverse cracks, reflective cracks, sliding cracks, looseness and aging, oil overflow, aggregate polishing, subsidence, ridges, wheel rutting, washboarding, pushing, jet ablation, oil corrosion, patches and excavation blocks, PCI / SCI, PCN / ACN, remaining service life and pavement disease risk level.

[0096] The visualization unit includes a pavement information display module 41, a disease statistics display module 42, a disease assessment risk display module 43, and a disease treatment progress display module 44, which are used to display pavement disease information in real time, facilitating intuitive decision-making and management by managers;

[0097] The pavement information display module 41 is used to display basic geometric information and attribute information of the airport pavement, which covers the design, construction and operation and maintenance stages of the airport runway;

[0098] The disease statistics display module 42 is used to dynamically display the pavement disease data;

[0099] The disease assessment risk display module 43 is used to dynamically display the pavement disease assessment results and risk levels;

[0100] The disease treatment progress display module 44 is used to dynamically display the pavement disease treatment construction plan, treatment construction progress and non-stop construction conditions.

[0101] The description and application of the present invention herein are illustrative and are not intended to limit the scope of the present invention to the above-described embodiments. Variations and modifications of the embodiments disclosed herein are possible, and substitutions and equivalent components of the embodiments are well known to those skilled in the art. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements, etc. made without departing from the scope and spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. A BIM-based integrated management method for airport pavement defect information, characterized by: The BIM-based airport pavement defect information integrated management method includes the following steps performed in sequence: Step S0: Determine whether the runway information model of the airport to be managed already exists. The file format of the runway information model includes common BIM file formats such as .rvt, CATProduct, and .ifc. If the judgment result is yes, proceed to step S2; otherwise, proceed to step S1; Step S1: Establish a refined airport pavement geometry information model based on project information, where the project information includes three types of data: 2D CAD drawings, field measurement data, and laser point cloud data. The airport pavement geometry information model should reflect the slope, plane dimensions, cross-sectional information, and dimensions of each structural layer of the actual pavement. Step S2: Check the compliance of the airport pavement geometry information, including slope, plane dimensions, cross-sectional information, and dimensions of each structural layer, to see if they are consistent with the runway of the airport to be managed. If so, proceed to step S3; otherwise, return to step S1. Step S3: Check the airport pavement attribute information for compliance. The check includes whether the airport pavement geometry information model has structural parameter information attributes, disease information attributes, evaluation information attributes, processing decision information attributes, and maintenance information attributes that meet the operation and maintenance requirements. If not, proceed to step S4; otherwise, proceed to step S5. Step S4: Adding attribute information that can support pavement disease management to the airport pavement geometric information model, wherein the attribute information includes structural parameter information, disease information, evaluation information, processing decision information, and maintenance information, to form a BIM model with complete geometric and attribute information; Step S5: Export the BIM model as an IFC file, and use the IFC file as a shared data source in the BIM operation and maintenance process; Step S6: parse the IFC file using an IFC file parser to obtain geometric information and non-geometric information in the IFC file; Step S7: Check the parsed IFC file for loss of geometric information and attribute information, batch add and update attribute information sets required for pavement operation and maintenance, and form an airport pavement BIM entity library; Step S8: reading the IFC file generated in the airport pavement BIM entity library, extracting the pavement geometry information and disease information therein, and performing a pavement evaluation to obtain a pavement evaluation result; Step S9: Analyze and decide on the road surface evaluation results to determine whether they meet the safety operation requirements. If the judgment result is yes, proceed to step S10; otherwise, proceed to step S11; Step S10: Continuously monitor the airport pavement damage and service status, and promptly obtain the latest information required for updating the airport pavement information model, and then return to step S7; Step S11: extracting the location, damage type, damage severity, and damage development information of the pavement panel blocks that affect the normal operation of the pavement in the IFC file to form the basic conditions for pavement repair; Step S12: Repair the pavement without stopping flights until it meets the safe operation conditions after evaluation, and then return to step S7 to update and dynamically manage the information of the airport pavement BIM entity library.

2. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S1, the airport pavement geometric information model is assembled from a pavement structure unit family. The pavement structure unit family is vertically composed of a surface layer, a base layer, a subbase layer, and a cushion layer. The pavement structure unit family adopts structured geometric parameters, which include unit length, unit width, unit slope, and unit material.

3. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S4, the structural parameter information is added to the pavement structure unit family by adding family type parameters, and the disease information, evaluation information, processing decision information and maintenance information are added to the pavement structure unit family by adding family instance parameters.

4. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S5, the IFC file extends the airfield structure entity IfcAirfieldAreaStructureElement, and the airfield structure entity pre-extends the runway structure pavement IfcRunwayStructurePavement, shoulder IfcShoulder, lift strip IfcRunwayStrip, blow-off pad IfcRunwayBlastPad, runway end safety area IfcRunwayAndSafetyArea, clearway IfcClearway, and stopway IfcStopway entities, and the airfield structure entity is extended with Express-G graphics.

5. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S7, the batch addition and update of the attribute information set required for pavement operation and maintenance is achieved by calling an electronic form with the help of visual programming technology.

6. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S8, the pavement is divided into several pavement evaluation units during the pavement evaluation. The pavement evaluation unit is a single pavement panel or an artificially demarcated evaluation area. The evaluation content includes the pavement disease risk level, structural condition index, pavement condition index, pavement grade number, aircraft grade number, joint load transfer capacity information and remaining service life.

7. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S9, the following formula is used to analyze and make decisions on the road surface evaluation results: Among them, P evaluation It represents the comprehensive analysis result of the usage status of a road surface evaluation unit, E risklevel , E CI , E PCN , E LTE They represent the results of judgment based on the pavement disease risk level, condition index, pavement grade number, and joint load transfer capacity, respectively. 1 means that the evaluation unit needs to be repaired and performance improved, and 0 means that no maintenance is required and continuous monitoring is required. risk level represents the pavement disease risk level code, SCI represents the structural condition index, PCI represents the pavement condition index, PCN represents the pavement grade number, ACN represents the aircraft grade number, and LTE represents the joint load transfer capacity, which is 100 times the ratio of the deflection of the unloaded plate of the rigid pavement at 150 mm from the joint to the deflection of the loaded plate at 150 mm from the joint measured by a weight-type deflectometer. The pavement disease risk level code risklevel is divided into seven levels, using Arabic numerals from 0 to 6, where 0 represents extremely poor, 1 represents poor, 2 represents moderately poor, 3 represents moderate, 4 represents moderately good, 5 represents good, and 6 represents excellent.

8. The BIM-based integrated management method for airport pavement defects according to claim 1 is characterized by: In step S12, before the runway is repaired without stopping flights, a neural network method is first used to match the optimal repair method, and then a BIM model is used to simulate and pre-analyze the construction of the runway before the runway is repaired without stopping flights.

9. A BIM-based airport pavement disease information integrated management system, characterized by: The BIM-based airport pavement disease information integrated management system comprises an airport pavement BIM entity library (1), an airport pavement model processing unit (2), an airport pavement disease management unit (3) and a visualization unit (4); The airport pavement BIM entity library (1) includes an IFC file information identification module (11), a model view definition module (12), an attribute information addition module (13) and a geometry information update module (14); The IFC file information identification module (11) is used to identify the airport pavement IFC file and extract key information; The model view definition module (12) is used to define the information requirements of different application scenarios of the airport pavement so as to quickly classify and extract the information required for the application; The attribute information adding module (13) is used to add and dynamically update the attribute information required for pavement operation and maintenance; The geometric information updating module (14) is used to update the pavement geometric information after the pavement geometric information changes, so as to dynamically update the BIM model; The airport pavement model processing unit (2) includes a point cloud data processing module (21), a CAD drawing processing module (22), a BIM model import module (23) and an IFC file parsing module (24); and is used to provide data support for the airport pavement BIM entity library (1), provide an interface for the airport pavement BIM entity library (1) to the outside world, and provide support for other applications of the pavement information model; The airport pavement disease management unit (3) includes a disease information statistics module (31), a disease evaluation and analysis module (32), a disease treatment decision module (33) and a historical disease query module (34); The disease information statistics module (31) is used to count various types of disease information on the airport pavement, and the statistical information includes the type of disease, the number of diseases and the degree of disease; The disease evaluation and analysis module (32) is used to analyze and evaluate the manifestations of various pavement diseases and to quantitatively analyze the pavement's airworthiness; The disease treatment decision module (33) is used to make a comprehensive judgment on the results of the disease evaluation and analysis module (32), give treatment plan suggestions based on historical data and engineering experience, and record decision information; The historical damage query module (34) is used to store historical damage information and damage treatment methods of the pavement, forming a pavement historical damage database for real-time query and providing support for the damage evaluation and analysis module (32); The disease evaluation and analysis module (32) is divided into a cement concrete pavement disease evaluation and analysis submodule (C32) and an asphalt pavement disease evaluation and analysis submodule (R32); The visualization unit includes (4) a pavement information display module (41), a disease statistics display module (42), a disease assessment risk display module (43) and a disease treatment progress display module (44), which are used to display pavement disease information in real time, facilitating intuitive decision-making and management by managers; The pavement information display module (41) is used to display basic geometric information and attribute information of the airport pavement, and the information covers the design, construction and operation and maintenance stages of the airport runway; The disease statistics display module (42) is used to dynamically display pavement disease data; The disease assessment risk display module (43) is used to dynamically display the pavement disease assessment results and risk levels; The disease treatment progress display module (44) is used to dynamically display the pavement disease treatment construction plan, treatment construction progress and non-stop construction conditions.

10. The BIM-based airport pavement defect information integrated management system according to claim 9 is characterized by: The cement concrete pavement disease evaluation and analysis submodule (C32) is used to realize information carrying and analysis based on the BIM model, and the content includes surface cracking, corner fracture, broken plate or cross crack, subsidence or misalignment, expansion cracking, filler damage, joint crushing, mud pumping and slab bottom voiding, durability cracks, shrinkage cracks, potholes, peeling, cracking, micro cracks, slab corner peeling, small patches, large patches or excavation patches, PCI / SCI, PCN / ACN, joint load transfer capacity, remaining service life, and pavement disease risk level; The asphalt pavement disease evaluation and analysis submodule (R32) is used to realize information carrying and analysis based on the BIM model, and its contents include cracking, irregular cracks, longitudinal cracks, transverse cracks, reflective cracks, sliding cracks, looseness and aging, oil spillage, aggregate polishing, subsidence, ridges, wheel rutting, washboarding, pushing, jet ablation, oil corrosion, patches and excavation blocks, PCI / SCI, PCN / ACN, remaining service life and pavement disease risk level.

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