Railway bridge construction positioning method and system

Abstract

The invention discloses a construction positioning method and system for a railroad bridge, and relates to the technical field of bridge construction positioning, and the method comprises the steps: determining each construction region of the railroad bridge according to a construction planning route of the railroad bridge, a construction time table of the railroad bridge and a construction process table of the railroad bridge; in each construction area, the construction positioning point of the construction area is determined based on the area form of the construction area, the area position of the construction area and the construction procedure corresponding to the construction area, so that the accuracy of the construction positioning point of the construction area is ensured, and the accurate control of the construction positioning of the railway bridge is further realized; therefore, in the construction process of the railroad bridge, the actual construction progress of the railroad bridge is determined according to the construction progress of the railroad bridge, the real-time image of the railroad bridge and the construction positioning point of the construction area; and on the basis of the actual construction progress of the railroad bridge, construction management and control of the uncompleted bridge area in the railroad bridge are triggered.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction positioning, and particularly relates to a construction positioning method and system for railway bridges. Background Art

[0002] With the development of technology, railway bridges have been gradually applied to people's lives and bear the railways. During the construction of railway bridges, construction positioning is required, and further construction of railway bridges is triggered for different positions. In the prior art, the architectural form of railway bridges is controlled, and a single dimension is controlled according to the architectural form of railway bridges, which affects the accurate control of the construction positioning of railway bridges. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and the present invention provides a construction positioning method and system for railway bridges.

[0004] An embodiment of the present invention provides a construction positioning method for railway bridges, including: determining the node positions of railway bridges based on the construction drawings of railways and multiple detection images of the railway ground by drones; determining the construction planning route of railway bridges according to the node positions of railway bridges, the architectural form of the railway bridges, and the surrounding terrain of the node positions of railway bridges; determining each construction area of railway bridges according to the construction planning route of railway bridges, the construction schedule of railway bridges, and the construction process table of railway bridges; in each construction area, determining the construction positioning points of the construction area based on the area form of the construction area, the area position of the construction area, and the corresponding construction process of the construction area; during the construction of railway bridges, determining the actual construction progress of railway bridges according to the construction progress of railway bridges, the real-time images of railway bridges, and the construction positioning points of the construction area; triggering the construction control of the unfinished bridge areas in railway bridges based on the actual construction progress of railway bridges.

[0005] An embodiment of the present invention provides a construction positioning system for railway bridges. The construction positioning system for railway bridges is applied to the above-mentioned construction positioning method for railway bridges. The construction positioning system for railway bridges includes:

[0006] A node position module, configured to determine the node positions of railway bridges based on the construction drawings of railways and multiple detection images of the railway ground by drones;

[0007] A construction planning route module, configured to determine the construction planning route of railway bridges according to the node positions of railway bridges, the architectural form of the railway bridges, and the surrounding terrain of the node positions of railway bridges;

[0008] The construction area module is used to determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0009] The fault location module is used to determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0010] The actual construction progress module is used to determine the actual construction progress of the railway bridge during the construction process of the railway bridge according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction area;

[0011] The construction control module is used to trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In the embodiment of the present invention, through the method in the embodiment of the present invention, the node positions of the railway bridge are determined based on the construction drawings of the railway and multiple detection images of the railway ground by the unmanned aerial vehicle; the construction planning route of the railway bridge is determined according to the node positions of the railway bridge, the architectural form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge; each construction area of the railway bridge is determined according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge; in each construction area, the construction positioning points of the construction area are determined based on the area form of the construction area, the area position of the construction area, and the construction process corresponding to the construction area, which takes into account the area form of the construction area, the area position of the construction area, and the construction process corresponding to the construction area as a whole, ensures the accuracy of the construction positioning points of the construction area, and further realizes the accurate control of the construction positioning of the railway bridge.

[0014] Therefore, during the construction process of the railway bridge, the actual construction progress of the railway bridge is determined according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction area; the construction control of the unfinished bridge area in the railway bridge is triggered based on the actual construction progress of the railway bridge, so as to facilitate the accurate control of the unfinished bridge area in the railway bridge and effectively control the construction of the railway bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic flow chart of the construction positioning method of the railway bridge in the embodiment of the present invention;

[0016] Figure 2 is a schematic structural composition diagram of the construction positioning system of the railway bridge in the embodiment of the present invention. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] Please refer to Figure 1 and Figure 2 , a construction positioning method for a railway bridge, which is applied to the construction positioning scenario of a railway bridge; the construction positioning method for a railway bridge includes:

[0019] Step S11: Determine the node positions of the railway bridge based on the construction drawings of the railway and multiple detection images of the railway ground by an unmanned aerial vehicle;

[0020] Step S12: Determine the construction planning route of the railway bridge according to the node positions of the railway bridge, the architectural form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge;

[0021] Step S13: Determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0022] Step S14: Determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0023] Step S15: During the construction process of the railway bridge, determine the actual construction progress of the railway bridge according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction area;

[0024] Step S16: Trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge.

[0025] In step S11, determine the node positions of the railway bridge based on the construction drawings of the railway and multiple detection images of the railway ground by an unmanned aerial vehicle;

[0026] In the specific implementation process of the present invention, the specific steps are as follows:

[0027] S111: Determine the construction drawings of the railway based on the planning information of the railway, the project information of the railway, and the railway database;

[0028] S112: Collect the route map of the railway and determine the railway ground according to the route map of the railway;

[0029] S113: Obtain multiple detection images of the railway ground by the unmanned aerial vehicle based on the detection of the railway ground by the unmanned aerial vehicle;

[0030] S114: Interact with multiple detection images of the railway ground by the drone, and determine the node positions of the railway bridges based on the interaction of the multiple detection images of the railway ground by the drone. The node positions of each railway bridge are presented on the route map of the railway.

[0031] In the embodiments of the present application, the construction drawings of the railway are determined based on the planning information of the railway, the project information of the railway, and the railway database, taking into account the overall compatibility of the planning information of the railway, the project information of the railway, and the railway database, ensuring the accuracy of the construction drawings of the railway.

[0032] At this time, for the planning information of the railway, collect the planning information related to the railway, including the line alignment, design standards (such as track spacing, curve radius, maximum gradient, etc.), preliminary layout of bridges and tunnels, etc.; optionally, assume that a new high-speed railway line is being planned from City A to City B; it is necessary to collect the overall design information of this line, such as whether it follows the existing road or river alignment, whether the bridge needs to cross a large river or canyon, and whether the tunnel needs to pass through mountains, etc. These information come from the preliminary research of the project, the reports of the design unit, and the planning documents of the government department.

[0033] For the project information of the railway, the project information covers various requirements directly related to railway construction, such as construction period, budget, material selection, construction technology, etc. These information are crucial for determining the construction drawings because they will directly affect the design of bridges and other structures; optionally, in the high-speed railway project, it is necessary to know what the total budget of the project is in order to consider cost-effectiveness in bridge design; it is also necessary to know the construction period requirements in order to determine whether to adopt certain advanced construction technologies to speed up the construction; in addition, the project information also includes environmental protection requirements, such as the impact of bridge construction on the local ecosystem, and whether additional environmental protection measures are required.

[0034] The railway database contains the experience and data of past railway construction, including successful and failed cases, construction methods under different geological conditions, comparison of material properties, etc. These information are very valuable for formulating the construction drawings of new projects; optionally, in the high-speed railway project, a database containing global railway construction cases will be accessed; by searching for the bridge construction experience under similar geological conditions, find the most suitable bridge type and construction method for the project; for example, if it is found that a prestressed concrete box girder was used in a similar river crossing project and this design performed well under similar geological conditions, then this design will be considered for adoption in the project.

[0035] After collecting the planning information, project information, and database information, the design team will synthesize this information to determine the final construction drawings, which include the precise location, dimensions, structural type, material selection, etc. of the bridge; optionally, in a high-speed railway project, the design team will, based on the information collected, determine the precise location of the bridge (such as the location where it crosses a river), select a suitable structural type (such as a prestressed concrete box girder), and determine the detailed dimensions and material specifications of the bridge. This information will be integrated into the construction drawings as the basis for subsequent construction.

[0036] Furthermore, collect the route map of the railway and determine the railway ground based on the route map of the railway; obtain multiple detection images of the railway ground by the drone's detection of the railway ground, realizing the drone's detection of the railway ground and ensuring the accuracy of the multiple detection images of the railway ground by the drone.

[0037] At this time, collect the route map of the railway and obtain the official route map of the railway from relevant departments or design units. These route maps include information such as detailed line directions, station locations, and the layout of bridges and tunnels; the route map can be an electronic CAD file or a paper map.

[0038] After obtaining the route map, it is necessary to analyze the route map to determine the specific location of the railway ground, which involves the interpretation of the line direction and the identification of special structures such as bridges and tunnels; in addition, obstacles on the ground, such as existing buildings, rivers, roads, etc., also need to be considered.

[0039] Furthermore, before conducting the drone detection, it is necessary to select the drone and detection equipment; the drone should be equipped with a high-resolution camera to capture the detailed features of the ground; in addition, the flight stability, endurance, data transmission ability, etc. of the drone also need to be considered; according to the ground location determined by the railway route map, plan the flight route of the drone; the flight route should cover the entire railway ground, including the locations of special structures such as bridges and tunnels; in addition, parameters such as flight altitude, speed, and shooting angle also need to be considered; after planning the flight route, execute the drone's detection task; the drone will fly according to the above detection route and capture multiple detection images of the ground during the flight, and these images will be used for subsequent construction positioning and ground feature analysis.

[0040] Therefore, interact with the multiple detection images of the railway ground by the drone and determine the node positions of the railway bridges based on the interaction of the multiple detection images of the railway ground by the drone. The node positions of each railway bridge are presented on the route map of the railway, realizing the interaction of the multiple detection images of the railway ground by the drone and ensuring the accuracy of the node positions of the railway bridges.

[0041] At this time, it is necessary to preprocess multiple detection images taken by the drone, which includes operations such as image correction, enhancement, and stitching to ensure the quality and accuracy of the images; the preprocessed images will be integrated into a unified platform or software for subsequent interaction and analysis; after integrating all the images, image interaction analysis is then carried out, and operations such as image annotation, measurement, and comparison are performed; through these operations, the precise node positions of the railway bridge are determined.

[0042] After determining the node positions of the bridge, this position information needs to be accurately presented on the railway route map, which involves exporting the analysis results in the GIS software into an editable drawing format.

[0043] In step S12, determine the construction planning route of the railway bridge according to the node positions of the railway bridge, the architectural form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge.

[0044] In the specific implementation process of the present invention, the specific steps are as follows:

[0045] S121: Determine the architectural form of the railway bridge based on the node positions of the railway bridge, the railway route map, and the railway database.

[0046] S122: Determine multiple terrain parameters according to the terrain detection of the node positions of the railway bridge, and determine the surrounding terrain of the node positions of the railway bridge according to the multiple terrain parameters and the geology of the node positions of the railway bridge.

[0047] S123: Determine the first construction parameter based on the node positions of the railway bridge and the architectural form of the railway bridge, and determine the second construction parameter according to the node positions of the railway bridge and the surrounding terrain of the node positions of the railway bridge.

[0048] S124: Determine the construction planning route of the railway bridge based on the first construction parameter, the second construction parameter, and the architectural form of the railway bridge.

[0049] In the embodiment of the present application, determining the architectural form of the railway bridge based on the node positions of the railway bridge, the railway route map, and the railway database takes into account the overall consideration of the node positions of the railway bridge, the railway route map, and the railway database, and realizes the precise control of the architectural form of the railway bridge.

[0050] At this time, the node positions of railway bridges, the railway route map, and the railway database are introduced. Optionally, the node position: This is the precise positioning of the bridge on the railway line, including key data such as longitude, latitude, and altitude; the railway route map: provides the overall layout of the railway line, including information such as the specific location of the bridge, the line direction, and adjacent structures; the railway database: contains the design, construction, and maintenance experience of previous railway bridges, as well as relevant technical standards and specifications.

[0051] According to the design requirements of the railway line, analyze the traffic capacity, speed limit, load capacity, etc. that the bridge needs to meet; consider the environmental factors at the location of the bridge, such as climatic conditions, river width, riverbed geology, etc.; based on the above analysis, select the most suitable one or a combination of multiple bridge types (such as arch bridges, beam bridges, cable-stayed bridges, suspension bridges, etc.).

[0052] At the same time, determine the key dimensions of the bridge, such as span, height, width, etc., according to the size, driving speed, and track standards of railway vehicles; ensure that the bridge structure can meet the expected load requirements and safety standards; refine each component of the bridge, including piers, abutments, bridge deck paving, protective facilities, etc.; consider the stability, stiffness, and seismic performance of the structure.

[0053] Furthermore, determine multiple terrain parameters based on the terrain detection of the node position of the railway bridge, and determine the surrounding terrain of the node position of the railway bridge according to the multiple terrain parameters and the geology of the node position of the railway bridge. The surrounding terrain of the node position of the railway bridge is introduced.

[0054] At this time, conduct a detailed terrain detection at the node position of the railway bridge, which involves using professional equipment (such as GPS locators, total stations, laser rangefinders, etc.) to measure terrain height, slope, surface cover, etc. information; through these detections, obtain a series of key terrain parameters, such as the degree of terrain undulation, the angle of surface inclination, soil or rock type, etc.

[0055] Terrain height: Measure the terrain height of the bridge node position and its surrounding areas to understand the ups and downs of the terrain; slope: Calculate the angle of surface inclination, which helps to evaluate the earthwork volume and foundation treatment methods during bridge foundation construction; surface cover: Identify and classify surface cover, such as vegetation, soil, rock, etc., which is crucial for determining the bearing capacity of the foundation, construction methods, and environmental impact assessment.

[0056] Combine the collected terrain parameters with the geological information of the railway bridge node position for comprehensive analysis; the geological information includes soil bearing capacity, groundwater level, rock formation distribution, etc.; through analysis, more accurately understand the terrain characteristics of the bridge node position and its surroundings, including terrain stability, potential geological disaster risks (such as landslides, debris flows, etc.), and the difficulty of foundation treatment.

[0057] Soil bearing capacity: Evaluate the bearing capacity of the soil where the bridge foundation is located to ensure the stability and safety of the bridge structure; Groundwater level: Understand the height and change trend of the groundwater level, which is crucial for determining drainage measures and foundation treatment methods during foundation construction; Rock stratum distribution: Identify the types and characteristics of the rock strata penetrated by the bridge foundation and evaluate its impact on foundation stability.

[0058] Therefore, determine the first construction parameters based on the node position of the railway bridge and the architectural form of the railway bridge, and determine the second construction parameters according to the node position of the railway bridge and the surrounding terrain of the node position of the railway bridge; Determine the construction planning route of the railway bridge based on the first construction parameters, the second construction parameters, and the architectural form of the railway bridge, which incorporates the overall consideration of the first construction parameters, the second construction parameters, and the architectural form of the railway bridge, ensuring the accuracy of the construction planning route of the railway bridge.

[0059] At this time, the first construction parameters and the second construction parameters are introduced. Optionally, based on the node position and architectural form of the railway bridge, determine the construction parameters directly related to the bridge structure design, that is, the first construction parameters, which involve the dimensions, weights, material types, installation sequences, etc. of bridge components.

[0060] Bridge component dimensions: Determine the dimensions of components such as main girders, piers, and abutments according to the architectural form of the bridge to ensure the overall stability and bearing capacity of the bridge structure; Material type: Select materials suitable for the requirements of the bridge structure, such as concrete, steel, etc., and consider factors such as the strength, durability, and construction convenience of the materials; Installation sequence: Determine a reasonable installation sequence according to the weights, dimensions, and site conditions of the bridge components to ensure the smooth progress of the construction process.

[0061] Optionally, determine the construction parameters directly related to the construction site environment, that is, the second construction parameters, according to the node position of the railway bridge and the surrounding terrain, which involve the construction of construction access roads, drainage measures, foundation treatment, etc.

[0062] Plan and construct construction access roads according to the terrain and traffic conditions at the bridge node position to ensure the smooth passage of construction vehicles and equipment; Develop a drainage plan according to the surrounding terrain and groundwater level conditions to ensure the dryness and safety of the construction site; Take measures such as foundation reinforcement and drainage pressure reduction according to the geological exploration results and the requirements of the bridge foundation design to improve the bearing capacity and stability of the foundation.

[0063] Based on the first construction parameter, the second construction parameter, and the architectural form of the railway bridge, a detailed construction planning route is formulated, which includes the division of construction stages, the selection of construction methods, the allocation of construction resources, and the arrangement of construction progress, etc.; Optionally, the entire construction process is divided into different stages, such as foundation construction, superstructure construction, bridge deck paving, etc., and the construction content and objectives of each stage are clarified; According to the size, weight, and installation requirements of the bridge components, suitable construction methods are selected, such as hoisting precast components, in-situ casting, etc.; Reasonably allocate the human, material, and financial resources required for construction to ensure the smooth progress of the construction process; According to the division of construction stages and the selection of construction methods, formulate a detailed construction progress plan and regularly track and adjust the progress.

[0064] In another embodiment of the present application, in order to more intuitively show how to determine the construction planning route based on the first construction parameter, the second construction parameter, and the architectural form of the railway bridge, a matching table is constructed, as shown in Table 1 for details.

[0065] Table 1 Railway Bridge Construction Planning Route Matching Table

[0066]

[0067] In this railway bridge construction planning route matching table, according to the characteristics of each construction stage, the key first construction parameter, the second construction parameter, and the architectural form consideration factors are listed, and the corresponding recommended construction planning route is given.

[0068] In step S13, each construction area of the railway bridge is determined according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0069] In the specific implementation process of the present invention, the specific steps are as follows:

[0070] S131: Obtain the construction planning route of the railway bridge;

[0071] S132: Determine each construction space of the railway bridge based on the division of the construction planning route of the railway bridge;

[0072] S133: Determine the construction process table of the railway bridge according to each construction space of the railway bridge and the corresponding construction process types;

[0073] S134: Determine the construction schedule of the railway bridge according to the construction planning route of the railway bridge, the construction ability of the construction team of the railway bridge, and the completion time of the railway bridge;

[0074] S135: Determine each construction area of the railway bridge based on each construction space of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0075] In an embodiment of the present application, the construction planning route of the railway bridge is obtained; each construction space of the railway bridge is determined based on the division of the construction planning route of the railway bridge, realizing the division of the construction planning route of the railway bridge and ensuring the accuracy of each construction space of the railway bridge.

[0076] At this time, deeply understanding the specific content of the construction planning route, including the division of construction stages, the sequence of key construction activities, the selection of construction methods, etc., is the basis for determining the construction space; the construction planning route includes multiple stages such as foundation construction, superstructure construction, and deck paving, and each stage contains multiple key construction activities; understanding the logical relationship between these stages and activities helps the subsequent reasonable division of the construction space.

[0077] According to factors such as the geographical location, topography, and traffic conditions of the railway bridge, the main characteristics of the construction area are identified, and these characteristics will affect the division of the construction space; for example, if the bridge crosses a river, then the foundation construction needs to be carried out underwater, and special consideration should be given to the safety and efficiency of underwater operations; if the bridge is located in a busy traffic area, then traffic control measures need to be taken during construction, which will affect the layout and resource allocation of the construction space.

[0078] Based on the division of the construction planning route and the characteristics of the construction area, the construction area of the entire railway bridge is divided into multiple specific construction spaces; the boundaries of each construction space are clarified, including physical boundaries (such as fences, isolation belts, etc.) and logical boundaries (such as the sequence of construction activities, restrictions on resource allocation, etc.); the physical boundaries are defined by setting fences, isolation belts, etc. to ensure the safety and order of the construction area; the logical boundaries are reflected by construction plans, resource allocation, etc. to ensure the continuity and efficiency of construction activities; the initially divided construction spaces are evaluated to check whether they meet the requirements of the construction planning route, whether they meet the needs of construction activities, and whether there are potential safety hazards, etc.

[0079] Furthermore, according to each construction space of the railway bridge and the corresponding types of construction processes, the construction process table of the railway bridge is determined, which takes into account the overall consideration of each construction space of the railway bridge and the corresponding types of construction processes, improving the accuracy of the construction process table of the railway bridge.

[0080] At this time, clarify the types of construction processes included in each construction space, which is determined based on the bridge design drawings, construction plans, and construction experience; for each construction space, list in detail all the construction processes involved, including but not limited to foundation excavation, pile foundation construction, cap pouring, pier construction, precast component fabrication and hoisting, cast-in-place beam segment construction, deck paving, installation of auxiliary facilities, etc.; at the same time, clarify the construction methods, technical requirements, and required resources for each process.

[0081] Analyze the sequence and dependencies between each construction process to ensure the logic and coherence of the construction process table; for example, pile foundation construction can only be carried out after the foundation excavation is completed, the capping beam pouring can only be carried out after the pile foundation construction is completed, and the pier construction can only be carried out after the capping beam pouring is completed, etc. The logical relationships between these processes must be clear and definite to ensure the orderly progress of construction activities.

[0082] Based on the above analysis, formulate a detailed construction process table; the construction process table includes information such as process name, construction space, construction time, construction person in charge, technical requirements, required resources, etc.; the construction process table should be clear and easy to understand for construction personnel to consult and execute; at the same time, it should be updated and maintained regularly to reflect changes in the construction progress and adjustments to the construction plan; optionally, review and verify the construction process table to ensure its accuracy and feasibility, which involves communication and coordination with stakeholders such as the construction team, designers, and supervisors; during the review process, focus on issues such as whether the logical relationships between processes are reasonable, whether the construction time is feasible, and whether the required resources are sufficient; if necessary, adjust and optimize the construction process table.

[0083] Specifically, assume that the construction process table of a railway bridge spanning a river is being planned; based on the bridge design drawings and construction plan, the following construction spaces and corresponding construction process types are determined:

[0084] Foundation construction space: includes processes such as foundation excavation, pile foundation construction, capping beam pouring, etc.; superstructure construction space: includes processes such as precast component fabrication and hoisting, cast-in-place beam segment construction, etc.; bridge deck paving space: includes processes such as bridge deck paving, installation of anti-collision guardrails, etc.; based on this information, the following construction process table is formulated, see Example Table 2 for details.

[0085] Table 2 Construction Process Table

[0086]

[0087]

[0088] Furthermore, determine the construction schedule of the railway bridge according to the construction planning route of the railway bridge, the construction capabilities of the construction team of the railway bridge, and the completion time of the railway bridge, taking into account the overall construction planning route of the railway bridge, the construction capabilities of the construction team of the railway bridge, and the completion time of the railway bridge, ensuring the accuracy of the construction schedule of the railway bridge.

[0089] At this time, conduct a detailed analysis of the construction planning route of the railway bridge, including the division of each construction stage, the sequence of key construction activities, the selection of construction methods, etc. This is the basis for formulating the construction schedule; it is necessary to understand the expected goals, durations, and logical relationships among each construction stage; at the same time, consider the uncertain factors during the construction process, such as weather changes, material supply, etc., and reserve a certain amount of flexibility for the construction schedule.

[0090] Comprehensively evaluate the construction capabilities of the railway bridge construction team, including the number of personnel, skill levels, equipment status, management experience, etc.; analyze the work efficiency and productivity of the construction team in different construction stages and processes, as well as the ability to handle emergencies; in addition, consider the impact of factors such as personnel turnover, equipment maintenance, and renewal of the construction team on the construction schedule.

[0091] According to the project requirements, contract provisions, or the needs of the owner, determine the completion time of the railway bridge; the completion time is a fixed date or time period; when determining the completion time, consider factors such as the urgency of the project, the availability of resources, and the limitations of the construction environment; at the same time, communicate fully with relevant parties such as the owner, designer, and supervisor to ensure the reasonableness and feasibility of the completion time; based on the above analysis, formulate a detailed construction schedule; the construction schedule includes the start and end times of each construction stage, the specific time arrangements for key construction activities, the resource allocation of the construction team, etc.; the construction schedule should be clear and easy for construction personnel to consult and execute; at the same time, consider the uncertain factors during the construction process and reserve a certain time buffer for key construction activities; in addition, regularly update and maintain the construction schedule to reflect changes in the construction progress and adjustments to the construction plan.

[0092] Specifically, assume that the construction schedule of a railway bridge spanning a valley is being planned; according to the construction planning route, the construction of the entire bridge is divided into three stages: foundation construction, superstructure construction, and deck paving; at the same time, the construction capabilities of the construction team are evaluated, and it is found that the team has high work efficiency and productivity during the foundation construction stage, but the work efficiency is relatively low during the superstructure construction stage due to the need to hoist large precast components; in addition, the owner requires that the entire project must be completed within 12 months.

[0093] Based on the above analysis, the following construction schedule is formulated:

[0094] Foundation construction stage: The expected duration is 2 months; since the construction team has high work efficiency and productivity during this stage, reasonably arrange the configuration of personnel and equipment to ensure the smooth progress of foundation construction.

[0095] Superstructure construction stage: The expected duration is 6 months; considering the relatively low working efficiency of hoisting large precast components, more time is reserved to complete the construction of this stage; meanwhile, it is planned to strengthen the management and coordination of the construction team during this stage to improve work efficiency.

[0096] Bridge deck paving stage: The expected duration is 2 months; since the bridge deck paving is relatively simple and the workload is small, the allocation of personnel and equipment is reasonably arranged during this stage to ensure the smooth completion of the bridge deck paving.

[0097] Total time buffer: To cope with the uncertainties during the construction process, a 2-month time buffer is reserved. In this way, even if there are some delays or problems during the actual construction, there is enough time for adjustment and remedy.

[0098] Therefore, based on the various construction spaces of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge, the various construction areas of the railway bridge are determined, which incorporates the overall consideration of the various construction spaces of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge, realizes the interaction of the various construction spaces of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge, and ensures the accuracy of the various construction areas of the railway bridge.

[0099] At this time, it is necessary to deeply understand the corresponding relationship between the various construction spaces of the railway bridge and the construction schedule, which includes clarifying the position of each construction space in the overall construction plan, the time nodes of the start and end of construction, and the logical relationship between the construction spaces; the construction spaces are divided according to the structural characteristics and construction requirements of the bridge, such as the foundation construction space, the superstructure construction space, the bridge deck paving space, etc.; while the construction schedule details the start and end times of each construction stage; understanding these corresponding relationships helps the reasonable division of the subsequent construction areas.

[0100] Combined with the construction process table of the railway bridge, analyze the construction processes and their specific requirements required in each construction space, which includes the equipment, materials, number of personnel required for construction, and construction environment, etc.; the construction process table details all the processes that need to be carried out in each construction space, as well as the construction methods and technical requirements of each process; by analyzing these processes, clarify the specific construction requirements of each construction space, and provide a basis for the division of the subsequent construction areas.

[0101] Based on the above analysis, the construction area of the entire railway bridge is divided into several sub-areas. Each sub-area corresponds to one or more construction spaces, and the construction scope, construction time and required resources of each sub-area are clearly defined. The division of construction areas should comprehensively consider the requirements of construction space, construction schedule and construction process table to ensure that each sub-area can independently complete its corresponding construction tasks during the construction period. At the same time, the division of construction areas should also consider factors such as the topography and traffic conditions of the construction site to ensure the smooth progress of construction activities.

[0102] Develop a detailed management plan for each construction area, including the organization and management of construction personnel, the deployment and use of construction equipment, the procurement and transportation of construction materials, etc. The construction area management plan should clearly define the specific person in charge of each construction area, the organizational structure of the construction team, the types and quantities of construction equipment, the procurement channels and transportation methods of construction materials, etc. These plans will help ensure the orderly progress of construction activities and improve construction efficiency and quality. Optionally, review and adjust the division and management plan of the construction area to ensure that it meets the requirements of the construction planning route, meets the construction team's construction capabilities, and can complete the construction tasks within the scheduled completion time. During the review process, focus on whether the division of the construction area is reasonable, whether the management plan is feasible, and whether the required resources are sufficient. If necessary, adjust and optimize the division and management plan of the construction area.

[0103] In another embodiment of the present application, a matching table of each construction area is constructed according to each construction space, construction schedule and construction process table of the railway bridge, which is used to clarify the construction area corresponding to each construction space, construction time and construction process, see Table 3 for details.

[0104] Table 3 Matching table of each construction area

[0105]

[0106]

[0107] Through the matching table of each construction area, you can clearly see the position of each construction area in the overall construction plan, the construction time and the construction procedures that need to be carried out.

[0108] In step S14, various construction areas of the railway bridge are determined according to the planned construction route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0109] In the specific implementation process of the present invention, the specific steps are:

[0110] S141: In each construction area, obtain the regional form and regional position of the construction area;

[0111] S142: Determine the construction process corresponding to the construction area based on the construction information of the construction area, the types of construction equipment configured in the construction area, and the target information of the construction area;

[0112] S143: Determine the first construction positioning parameter based on the regional shape and regional location of the construction area, and determine the second construction positioning parameter according to the regional shape of the construction area and the corresponding construction process;

[0113] S144: Determine the construction positioning point of the construction area according to the first construction positioning parameter, the second construction positioning parameter, and the corresponding construction area, and trigger the construction positioning of the railway bridge based on the construction positioning point of the construction area;

[0114] In the embodiments of the present application, in each construction area, obtain the regional shape and regional location of the construction area. At the same time, determine the construction process corresponding to the construction area based on the construction information of the construction area, the types of construction equipment configured in the construction area, and the target information of the construction area, which incorporates an overall consideration of the construction information of the construction area, the types of construction equipment configured in the construction area, and the target information of the construction area, ensuring the accuracy of the construction process corresponding to the construction area.

[0115] At this time, comprehensively collect all relevant information about a specific construction area, including but not limited to geological conditions, climate conditions, traffic conditions, surrounding obstacles, construction difficulty assessment, etc.; geological conditions involve soil bearing capacity, groundwater level, etc.; climate conditions need to consider temperature, humidity, rainfall frequency, etc.; traffic conditions are related to material transportation and personnel access; surrounding obstacles include existing buildings, pipelines, etc.; construction difficulty assessment is based on a comprehensive consideration of all the above factors.

[0116] Evaluate whether the existing construction equipment meets the construction requirements according to the characteristics and requirements of the construction area, including the type, quantity, performance, etc. of the equipment; for example, for areas that require deep foundation construction, large drilling machines and concrete mixers are needed; for superstructure construction, cranes, hoists, and formwork systems are required.

[0117] Clarify the specific goals of the construction area, including construction quality standards, safety requirements, progress plans, cost control, etc.; construction quality standards involve concrete strength, steel bar binding specifications, etc.; safety requirements include high-altitude operation safety, equipment operation safety, etc.; the progress plan should clarify the start and end times of each process; cost control should consider material usage, equipment rental, labor costs, etc.

[0118] Based on the collected construction information, the evaluated types and capabilities of equipment, and the clear target information, specific construction processes are matched with the construction areas. This step requires comprehensive consideration of all factors to ensure that the selected processes not only meet the construction requirements, make full use of the existing equipment, but also satisfy the quality and safety standards, and can be completed within the scheduled time with the cost controlled within the budget.

[0119] Therefore, the first construction positioning parameter is determined based on the regional form and regional location of the construction area, and the second construction positioning parameter is determined according to the regional form of the construction area and the corresponding construction process; the construction positioning point of the construction area is determined based on the first construction positioning parameter, the second construction positioning parameter, and the corresponding construction area, and the construction positioning of the railway bridge is triggered based on the construction positioning point of the construction area, realizing the interaction of the first construction positioning parameter, the second construction positioning parameter, and the corresponding construction area, and ensuring the accuracy of the construction positioning point of the construction area.

[0120] At this time, the first construction positioning parameter and the second construction positioning parameter are introduced. The first construction positioning parameter is determined based on the regional form and regional location of the construction area, and the second construction positioning parameter is determined according to the regional form of the construction area and the corresponding construction process.

[0121] Meanwhile, based on the regional form and regional location of the construction area, the macroscopic construction layout and reference points are determined. These parameters are used to establish the construction coordinate system, providing a unified positioning reference for subsequent construction activities; the regional form includes terrain undulations, landform features, etc., which will all affect the construction layout; the regional location determines the relative relationship between the construction area and the overall bridge structure; the first construction positioning parameter includes the center point coordinates, boundary lines, elevation benchmarks, etc. of the construction area.

[0122] According to the regional form of the construction area and the corresponding construction process, the specific construction positioning requirements are determined. These parameters are used to guide the precise execution of single or multiple construction processes; different construction processes will lead to changes in positioning requirements; for example, in pile foundation construction, the specific positions and elevations of each pile need to be determined; in beam segment construction, the hoisting points and splicing positions of the beam segments need to be determined; the second construction positioning parameter includes pile position coordinates, beam segment hoisting point coordinates, splicing joint positions, etc.

[0123] Meanwhile, combining the first construction positioning parameters, the second construction positioning parameters, and the corresponding construction areas, specific construction positioning points are determined. These positioning points are the direct references for construction activities and are crucial for ensuring construction accuracy. Construction positioning points include pile position marks, beam segment hoisting point marks, splicing joint marks, etc. These marks need to be clearly visible at the construction site and are easy to measure and verify. Once the construction positioning points are determined, construction positioning activities begin, which include using surveying instruments for precise calibration to ensure that construction activities are carried out according to the predetermined positions and sequences.

[0124] Specifically, assume that a certain construction area of a railway bridge is being planned. This area is located between valleys and a cable-stayed bridge with high piers and large spans needs to be built.

[0125] The first construction positioning parameters: Based on the regional shape (valley terrain) and regional location (bridge center line position) of the construction area, the central point coordinates, boundary lines, and elevation benchmarks of the construction area are determined. These parameters are used to establish a construction coordinate system, providing a unified positioning benchmark for subsequent construction activities.

[0126] The second construction positioning parameters: According to the regional shape of the construction area (such as the width and depth of the valley, etc.) and the corresponding construction processes (such as pile foundation construction, pylon construction, beam segment hoisting, etc.), specific construction positioning requirements are determined. For example, in pile foundation construction, the specific positions and elevations of each pile are determined; in pylon construction, the central point and height of the pylon foundation are determined; in beam segment hoisting, the hoisting points and splicing positions of the beam segments are determined.

[0127] Combining the first construction positioning parameters and the second construction positioning parameters, specific construction positioning points are determined at the construction site, including pile position marks, pylon foundation center point marks, beam segment hoisting point marks, etc. These marks are clearly visible and are easy to measure and verify.

[0128] In another embodiment of the present application, in the construction of a railway bridge, determining the construction positioning points is a key step to ensure construction accuracy and safety. The following Table 4 is an example of using a construction positioning point matching table to determine construction positioning points.

[0129] Table 4 Construction Positioning Point Matching Table

[0130]

[0131] Through the construction positioning point matching table, construction personnel clearly understand the positioning requirements of each construction area, ensuring the accuracy and consistency of construction positioning points.

[0132] In step S15, during the construction of the railway bridge, the actual construction progress of the railway bridge is determined based on the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction area.

[0133] In the specific implementation process of the present invention, the specific steps are as follows:

[0134] S151: During the construction process of the railway bridge, real-time images of the railway bridge are collected based on the dynamic shooting of the railway bridge by a drone;

[0135] S152: The current construction position of the railway bridge is determined according to the image detection of the real-time image of the railway bridge;

[0136] S153: The construction positioning points of the corresponding construction areas are determined according to the matching of the current construction position of the railway bridge and the area positions of each construction area;

[0137] S154: The construction progress of the railway bridge is determined according to the updated construction information of the railway bridge and the corresponding progress update form;

[0138] S155: Multiple interactions are carried out on the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction areas;

[0139] S156: The actual construction progress of the railway bridge is determined according to the multiple interactions of the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction areas;

[0140] In the embodiment of the present application, during the construction process of the railway bridge, real-time images of the railway bridge are collected based on the dynamic shooting of the railway bridge by a drone, and the current construction position of the railway bridge is determined according to the image detection of the real-time image of the railway bridge, realizing the image detection of the real-time image of the railway bridge and ensuring the accuracy of the current construction position of the railway bridge.

[0141] At this time, select a drone with high-definition camera function, stable flight performance, and remote control ability; ensure that the lens carried by the drone meets the requirements of bridge construction monitoring, such as a wide-angle lens to capture a wider construction scene, or a telephoto lens to magnify specific construction details; formulate a detailed flight plan according to the construction area, terrain features, and weather conditions of the railway bridge; set the take-off point, flight altitude, speed, shooting angle, and flight route of the drone to ensure that the drone can cover the entire construction area safely and efficiently.

[0142] During the flight of the drone, use its camera function to continuously shoot the construction area of the railway bridge; ensure that the captured images are clear, stable, and can be transmitted to the ground monitoring station or cloud server in real time.

[0143] According to the construction characteristics and monitoring requirements of railway bridges, select appropriate image detection methods, including object detection, edge detection, shape matching, etc., to identify key construction elements in the image, such as bridge piers, beam segments, construction vehicles, etc.; use the image detection method to analyze the preprocessed real-time image and extract the characteristic information of the key construction elements; match these characteristics with the preset construction position template to determine the current construction position; in order to improve the accuracy of position determination, use multiple methods for position correction and verification; for example, combine GPS positioning information with image detection results, or perform 3D reconstruction and position estimation through images taken from multiple angles; output the determined current construction position information in the form of text, charts or maps.

[0144] Furthermore, the construction positioning points of the corresponding construction areas are determined according to the matching of the current construction position of the railway bridge and the regional positions of each construction area, realizing the matching of the current construction position of the railway bridge and the regional positions of each construction area, and ensuring the accuracy of the construction positioning points of the construction areas.

[0145] At this time, before this step, the current construction position of the railway bridge has been determined through drone photography and image detection technology, and this position is a relatively accurate spatial coordinate or area description; the construction area map should be detailedly marked with information such as the positions, boundaries, and key construction points of each construction area, and this map is a digital map, a GIS system or a digital version of a paper drawing; according to the characteristics of the construction area map and the data format of the current construction position, develop or select an appropriate matching method, and this method can accurately match the current construction position with the positions on the construction area map; input the current construction position data into the matching method, and the method will automatically search the construction area map and find the area that best matches the current construction position; once the matching is successful, the method will output the construction positioning points of the corresponding construction area, and these positioning points are the specific positions of key construction activities, such as pile foundation positions, beam segment hoisting points, concrete pouring areas, etc.

[0146] Furthermore, the construction progress of the railway bridge is determined according to the updated construction information of the railway bridge and the corresponding progress update table, taking into account the overall consideration of the updated construction information of the railway bridge and the corresponding progress update table, and ensuring the accuracy of the construction progress of the railway bridge.

[0147] At this time, the latest construction information is collected from multiple channels such as the construction site, project management software, construction logs, etc. This information includes the amount of work completed, the amount of materials used, personnel attendance, equipment usage status, etc.; the collected construction information is sorted to ensure the accuracy and completeness of the data; when verifying the information, it is necessary to communicate with the on-site construction personnel, project managers or relevant experts to resolve data inconsistencies or questions; the progress update table is a detailed comparison table of the plan and actual progress, including the expected completion time, actual completion time, completion percentage and other information of each construction stage.

[0148] Match the collected construction information with the progress update sheet to determine the actual completion status of each construction phase, which involves comparing the actual amount of work completed with the expected amount of work, or inferring the construction progress based on the amount of materials used; compare the actual progress with the expected progress and calculate the progress deviation; the progress deviation is in time (such as the number of days ahead of schedule or delayed) and in workload (such as the difference between the percentage of completed work and the expected percentage); analyze the calculated progress deviation to find out the reasons for the deviation, which include weather effects, insufficient material supply, staff shortages, equipment failures, etc.; based on the progress deviation and analysis results, determine the current construction progress status of the railway bridge, which is a status description such as "on schedule", "minor delays", "serious delays", etc.

[0149] Specifically, in a certain railway bridge construction project, the construction party is responsible for the construction of piers No. 5 to 10; according to the project plan, the pile foundation construction of pier No. 5 should be completed before the 10th of a certain month, and pier No. 6 should be completed before the 20th of the same month, and so on.

[0150] In the middle of a certain month, the construction party collected the latest construction information; by checking the construction log and communicating with the on-site construction personnel, it was learned that the pile foundation construction of Pier No. 5 had been completed by 90%, but Pier No. 6 had only been completed by 60% due to insufficient material supply.

[0151] The construction party prepared a progress update sheet to compare the actual completion status with the expected plan; calculations showed that Pier 5 would be slightly delayed by 2 days, while Pier 6 would be severely delayed by 4 days; by analyzing the causes of progress deviations, the construction party found that insufficient material supply was the main reason for the delay of Pier 6; therefore, the construction party immediately communicated with suppliers to speed up the procurement and transportation of materials; ultimately, the construction party determined the current construction progress status as "slight delay" and output a construction progress report; the report detailed information such as actual completion status, progress deviation, cause analysis and recommended measures for the project manager and owner to review; by taking timely measures, the construction party finally succeeded in shortening the delay time and ensuring the smooth progress of the project.

[0152] Therefore, multiple interactions are carried out on the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points in the construction area; based on the multiple interactions of the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points in the construction area, the actual construction progress of the railway bridge is determined, realizing the multiple interactions of the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points in the construction area, and ensuring the accuracy of the actual construction progress of the railway bridge.

[0153] At this time, the construction progress data (such as completion percentage, key path completion status, etc.), the real-time image data of the railway bridge (such as high-definition images taken by drones, video surveillance screenshots, etc.), and the construction positioning point data in the construction area (such as GPS coordinates, key construction point markings, etc.) are integrated. These data come from different data sources, such as project management software, drone monitoring systems, GIS systems, etc.

[0154] Preprocess the integrated data to ensure data consistency and accuracy, which includes steps such as data cleaning (removing incorrect or duplicate data), data conversion (converting data into a format suitable for analysis), and data standardization (converting data into the same scale or range); use data analysis tools or platforms to perform multiple interaction analyses on the construction progress, real-time images, and construction positioning point data to reveal the correlations, trends, and patterns between the data; evaluate the results of the multiple interaction analyses to determine which information is valuable for determining the actual construction progress, which includes identifying key influencing factors, assessing the risk of schedule delays, and predicting future construction trends; feedback the results of the multiple interaction analyses to project managers, construction personnel, and other relevant parties; adjust and optimize the analysis results based on the feedback to ensure that they more accurately reflect the actual construction progress.

[0155] Based on the results of the multiple interaction analyses, comprehensively analyze the construction progress, real-time images, and construction positioning point data to determine the actual construction progress of the railway bridge, which involves steps such as weight allocation for multiple data sources, quantitative assessment of schedule deviations, and prediction of construction progress trends; based on the comprehensive analysis results, determine the current construction progress status of the railway bridge, which is a status description such as "on schedule", "slightly delayed", "severely delayed", or "completed ahead of schedule"; organize information such as the actual construction progress status, key influencing factors, and recommended measures into a construction progress report.

[0156] Specifically, in a certain railway bridge construction project, the construction party used the multiple interaction method to determine the actual construction progress of the bridge.

[0157] First, the construction party integrated data from the project management software, the UAV monitoring system, and the GIS system. This data included the completion percentage of each part of the bridge, high-definition images captured by the UAV, and the GPS coordinates of key construction points. Then, the construction party preprocessed this data to ensure its consistency and accuracy; next, multiple interactive analyses were carried out using the data analysis platform; the analysis results showed that a certain part of the bridge had a slight progress delay due to weather reasons, while another part had a more serious progress delay due to material supply problems; at the same time, the real-time images captured by the UAV also showed the actual situation at the construction site, such as the equipment status and personnel distribution.

[0158] Based on the results of the multiple interactive analysis, the construction party determined the actual construction progress status of the bridge as "slight delay to serious delay"; then, a construction progress report was generated, which detailed information such as the actual completion situation, progress deviation, key influencing factors, and recommended measures.

[0159] In another embodiment of the present application, multi-source data such as construction progress, real-time images, and construction positioning points are matched to determine the actual construction progress. For details, see Example Table Five.

[0160] Table Five Actual Construction Progress Matching Table

[0161]

[0162] In the railway bridge construction project, the construction party updates the actual construction progress matching table regularly (such as weekly or monthly) to reflect the construction progress in real time; through the matching table, the project manager and the owner can intuitively understand the completion situation of each stage, discover progress deviations in a timely manner, and take corresponding measures.

[0163] In step S16, construction control of the unfinished bridge area in the railway bridge is triggered based on the actual construction progress of the railway bridge;

[0164] In the specific implementation process of the present invention, the specific steps are as follows:

[0165] S161: Obtain the actual construction progress of the railway bridge;

[0166] S162: Determine the completed bridge area in the railway bridge according to the actual construction progress of the railway bridge and the real-time image of the railway bridge;

[0167] S163: Determine the unfinished bridge area in the railway bridge according to the completed bridge area in the railway bridge and the final form of the railway bridge;

[0168] S164: Determine the remaining time according to the time spent on the completed bridge area in the railway bridge and the preset completion time in the railway bridge;

[0169] S165: Determine an urgent plan for the unfinished bridge area of the railway bridge based on the remaining time and the unfinished bridge area in the railway bridge, and trigger the construction control of the unfinished bridge area in the railway bridge according to the urgent plan for the unfinished bridge area in the railway bridge;

[0170] In the embodiments of the present application, obtain the actual construction progress of the railway bridge; determine the completed bridge area in the railway bridge according to the actual construction progress of the railway bridge and the real-time image of the railway bridge, which takes into account both the actual construction progress of the railway bridge and the real-time image of the railway bridge as a whole, and ensures the accuracy of the completed bridge area in the railway bridge.

[0171] At this time, obtain the actual construction progress of the railway bridge. At the same time, collect the actual construction progress data of the railway bridge from channels such as project management software, site logs, and construction team reports. These data should detail information such as the start and end times of each construction stage, the amount of work completed, and the resources used.

[0172] Use technical means such as drones to obtain the real-time image of the railway bridge. These images clearly show all parts of the bridge, including the completed and unfinished areas; preprocess the real-time image to improve the image quality and readability, which includes steps such as image enhancement, denoising, and color correction to ensure that the details in the image are clearly visible; match the actual construction progress data with the real-time image, which involves comparing the descriptions in the construction progress report with the actual construction situation in the image to confirm which areas have completed construction; mark the completed bridge area on the real-time image, which is achieved by drawing bounding boxes, using different colors, or annotating text on the image; the marking should accurately reflect the actual construction situation for subsequent analysis and decision-making.

[0173] Specifically, in a railway bridge construction project, the construction party is responsible for building a 1000-meter-long bridge; as the project progresses, the construction party needs to determine which bridge areas have completed construction.

[0174] First, the construction party collected the actual construction progress data from the project management software and learned that 80% of the pile foundation construction has been completed, 60% of the cap pouring has been completed, and the pier construction is in progress; at the same time, the construction party used a drone to take a real-time image of the bridge, and the image clearly showed all parts of the bridge.

[0175] Next, the construction party preprocessed the image to improve the image quality and readability; then, the actual construction progress data was matched with the real-time image to confirm the completed areas of the pile foundation construction and the cap pouring.

[0176] On the real-time image, the construction party marked the completed pile foundation and pile cap areas with bounding boxes of different colors and added corresponding written descriptions on the image.

[0177] Furthermore, the uncompleted bridge areas in the railway bridge are determined based on the completed bridge areas in the railway bridge and the final form of the railway bridge, ensuring the accuracy of the uncompleted bridge areas in the railway bridge.

[0178] At this time, collect the information of the marked and recorded completed bridge areas from the previous steps (such as S162), which includes detailed information such as the location, size, type (such as pile foundation, pile cap, pier shaft, etc.) and completion time of the completed areas; obtain the final form design drawing or 3D model of the railway bridge from the design team or project documents, and these design materials should detail the overall structure of the bridge, the dimensions and positional relationships of each part; compare the information of the completed bridge areas with the final form design of the railway bridge, which involves matching the actually completed areas with the corresponding parts in the design drawing to determine which parts are not yet completed; during the comparison process, identify the areas that do not match the final form design or have not been marked as completed, and these areas are the uncompleted bridge parts; record the uncompleted bridge areas in detail, including information such as location, size, type (such as remaining pile foundation, pile cap pouring, pier shaft construction, beam segment prefabrication and erection, etc.) and the estimated completion time, and this information will be used for subsequent construction plan adjustment and resource allocation.

[0179] Communicate and confirm the identified uncompleted bridge areas with the project team (including designers, construction managers, site engineers, etc.); ensure a common understanding and awareness of the uncompleted areas for subsequent collaboration and decision-making; update the project schedule based on the information of the uncompleted bridge areas, which includes adjusting the construction sequence, reallocating resources, setting new milestones, etc., to ensure that the project can be completed on time.

[0180] Specifically, in a certain railway bridge construction project, the construction party has completed part of the pile foundation construction and pile cap pouring work, and now it is necessary to determine which bridge areas are not yet completed.

[0181] First, the construction party collected the information of the completed bridge areas from the previous steps, including the specific locations, quantities and completion times of the pile foundations and pile caps, and this information exists in the form of marked drawings and records in the project management software. Then, the construction party obtained the final form design drawing of the railway bridge from the design team, and this final form design drawing details the overall structure of the bridge and the dimensions and positional relationships of each part.

[0182] Then, the construction party compared the information of the completed bridge area with the final form design drawing. Through the comparison, the construction party found that there was still some unfinished pile foundation construction, mainly concentrated on both sides of the bridge; there were also a small number of unfinished areas in the bearing platform pouring, located in the middle of the bridge; while the pier construction and beam segment prefabrication and erection work had not yet started. After identifying the unfinished bridge areas, the construction party detailedly recorded this information, including the location, size, type, and estimated completion time of the unfinished areas, etc. This information was compiled into a report.

[0183] Finally, the construction party updated the project schedule according to the information of the unfinished bridge areas; adjusted the construction sequence, giving priority to arranging the remaining pile foundation and bearing platform pouring work, and at the same time started to prepare the resources and equipment required for pier construction and beam segment prefabrication and erection; by updating the schedule, the construction party ensured that the project could be completed on time and maintained the collaboration and communication with the project team.

[0184] Therefore, determine the remaining time according to the time spent on the completed bridge areas in the railway bridge and the preset completion time in the railway bridge; based on the remaining time and the unfinished bridge areas in the railway bridge, determine the rush plan for the unfinished bridge areas in the railway bridge, and trigger the construction control of the unfinished bridge areas in the railway bridge according to the rush plan for the unfinished bridge areas in the railway bridge, which takes into account the overall consideration of the remaining time and the unfinished bridge areas in the railway bridge, ensures the accuracy of the rush plan for the unfinished bridge areas in the railway bridge, and realizes the construction control of the unfinished bridge areas in the railway bridge.

[0185] At this time, collect the time data spent on the completed bridge areas from the project management system, which includes the start time, end time, and total duration of each construction stage (such as pile foundation construction, bearing platform pouring, pier construction, etc.); obtain the preset total completion time of the project, which is the expected completion date set at the start of the project.

[0186] According to the final form design of the railway bridge, evaluate the workload required to complete the unfinished bridge areas, which involves specific indicators such as the remaining number of pile foundations, the number of bearing platforms, the height of piers, the number of beam segments, etc.; combine the remaining workload, the current construction progress, the resource allocation situation (such as manpower, materials, equipment, etc.), and potential influencing factors (such as weather, supply chain interruption, etc.) to estimate the time required to complete the remaining work.

[0187] Based on the remaining time determined in step S164, analyze whether the current resources (manpower, materials, equipment, etc.) are sufficient to support the completion of the work within the scheduled time; if resources are insufficient or time is tight, formulate an expedited plan, which includes increasing construction personnel, extending working hours, prioritizing the purchase of key materials, adjusting the construction sequence, and other measures; the expedited plan should clearly define the goals, responsibilities, time nodes, and required resources; implement construction management and control measures to ensure the effective implementation of the expedited plan.

[0188] Specifically, assuming that the preset total completion time of a railway bridge project is 24 months, the project has been carried out for 12 months and most of the work of pile foundation construction and pedestal casting has been completed; according to the collected data, the pile foundation construction takes 3 months and the pedestal casting takes 4 months; the remaining work includes pier body construction (estimated to take 5 months), beam segment prefabrication and erection (estimated to take 4 months) and other finishing work (estimated to take 1 month).

[0189] Taking into account the current construction progress and resource allocation, the project team estimates that it will take 10 months to complete the remaining work (5 months for pier construction + 4 months for beam prefabrication and erection + 1 month for finishing work); therefore, the remaining time of the project is 10 months, starting from the current time point.

[0190] The project team found that the remaining time was 10 months, but considering potential influencing factors (such as construction delays caused by severe weather), the actual available construction time was shorter; therefore, the team decided to develop an accelerated plan.

[0191] The expedited program includes:

[0192] Increase the number of construction personnel, especially during the pier construction and beam prefabrication and erection stages, to speed up the construction progress; extend working hours, especially at night and during off-peak hours, to improve construction efficiency; give priority to the procurement of key materials, such as steel bars, concrete, etc., to ensure that construction is not affected by supply chain disruptions; adjust the construction sequence and prioritize the completion of work on the critical path to shorten the total construction period.

[0193] At the same time, the project team triggered construction management and control measures, including: weekly progress checks to ensure that the actual construction progress is consistent with the accelerated plan; real-time monitoring of resource allocation to ensure adequate supply of key resources (such as construction personnel, equipment, etc.); establishing a problem-solving mechanism to quickly respond to and resolve emergencies during construction; and strengthening quality and safety supervision to ensure that construction quality and safety standards are complied with.

[0194] In another embodiment of the present application, the expedited plan matching situation can be seen in the example of Table 6.

[0195] Table 6 Expedited plan matching table

[0196]

[0197] Please refer to Figure 2 , Figure 2 which is a schematic structural composition diagram of the construction positioning system for a railway bridge in an embodiment of the present invention; the construction positioning system for the railway bridge includes:

[0198] A node position module 21, configured to determine the node positions of the railway bridge based on the construction drawings of the railway and multiple detection images of the railway ground by an unmanned aerial vehicle;

[0199] A construction planning route module 22, configured to determine the construction planning route of the railway bridge according to the node positions of the railway bridge, the construction form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge;

[0200] A construction area module 23, configured to determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0201] A fault occurrence location module 24, configured to determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge;

[0202] An actual construction progress module 25, configured to determine the actual construction progress of the railway bridge during the construction process of the railway bridge according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning points of the construction area;

[0203] A construction control module 26, configured to trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge.

[0204] For any combination of the technical features of the above embodiments, for the sake of brevity of description, not all combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

Claims

1. A construction positioning method for railway bridges, characterized in that, Including: Determining the node positions of a railway bridge based on railway construction drawings and multiple detection images of the railway ground captured by a drone; Determining the construction planning route of the railway bridge according to the node positions of the railway bridge, the architectural form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge; Determining the respective construction areas of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process list of the railway bridge; In each construction area, determining the construction positioning points of the construction area based on the area form of the construction area, the area position of the construction area, and the corresponding construction process of the construction area; During the construction process of the railway bridge, determining the actual construction progress of the railway bridge according to the construction progress of the railway bridge, the real-time images of the railway bridge, and the construction positioning points of the construction area; Triggering the construction control of the unfinished bridge areas in the railway bridge based on the actual construction progress of the railway bridge.

2. The construction positioning method of the railway bridge according to claim 1, wherein The determining the node positions of the railway bridge based on railway construction drawings and multiple detection images of the railway ground captured by a drone includes: Determining the construction drawings of the railway based on the planning information of the railway, the project information of the railway, and the railway database; Collecting the route map of the railway and determining the railway ground according to the route map of the railway; Obtaining multiple detection images of the railway ground captured by the drone based on the detection of the railway ground by the drone; Interacting with the multiple detection images of the railway ground captured by the drone, and determining the node positions of the railway bridge according to the interaction of the multiple detection images of the railway ground captured by the drone. The node positions of each railway bridge are presented on the route map of the railway.

3. The construction positioning method of the railway bridge according to claim 2, characterized in that, The determining the construction planning route of the railway bridge according to the node positions of the railway bridge, the architectural form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge includes: Determining the architectural form of the railway bridge based on the node positions of the railway bridge, the route map of the railway, and the railway database; Determining multiple terrain parameters according to the terrain detection of the node positions of the railway bridge, and determining the surrounding terrain of the node positions of the railway bridge according to the multiple terrain parameters and the geology of the node positions of the railway bridge; Determining the first construction parameter based on the node positions of the railway bridge and the architectural form of the railway bridge, and determining the second construction parameter according to the node positions of the railway bridge and the surrounding terrain of the node positions of the railway bridge; Determining the construction planning route of the railway bridge based on the first construction parameter, the second construction parameter, and the architectural form of the railway bridge.

4. The construction positioning method of the railway bridge according to claim 3, characterized in that The determining the respective construction areas of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process list of the railway bridge includes: Obtaining the construction planning route of the railway bridge; Determining the respective construction spaces of the railway bridge based on the division of the construction planning route of the railway bridge; Determining the construction process list of the railway bridge according to the respective construction spaces of the railway bridge and the corresponding types of construction processes; Determining the construction schedule of the railway bridge according to the construction planning route of the railway bridge, the construction capabilities of the construction team of the railway bridge, and the completion time of the railway bridge. Determine each construction area of the railway bridge based on each construction space of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge.

5. The construction positioning method of the railway bridge according to any one of claims 1 to 4, characterized in that, In each construction area, determine the construction positioning point of the construction area based on the area shape of the construction area, the area position of the construction area, and the construction process corresponding to the construction area, including: In each construction area, obtain the area shape of the construction area and the area position of the construction area; Determine the construction process corresponding to the construction area based on the construction information of the construction area, the types of construction equipment configured in the construction area, and the target information of the construction area; Determine the first construction positioning parameter based on the area shape of the construction area and the area position of the construction area, and determine the second construction positioning parameter according to the area shape of the construction area and the construction process corresponding to the construction area; Determine the construction positioning point of the construction area according to the first construction positioning parameter, the second construction positioning parameter, and the corresponding construction area, and trigger the construction positioning of the railway bridge based on the construction positioning point of the construction area.

6. The construction positioning method of the railway bridge according to claim 5, characterized in that, During the construction of the railway bridge, determine the actual construction progress of the railway bridge according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning point of the construction area, including: During the construction of the railway bridge, collect the real-time image of the railway bridge based on the dynamic shooting of the railway bridge by the unmanned aerial vehicle; Determine the current construction position of the railway bridge according to the image detection of the real-time image of the railway bridge; Determine the construction positioning point of the corresponding construction area according to the matching of the current construction position of the railway bridge and the area positions of each construction area; Determine the construction progress of the railway bridge according to the updated construction information of the railway bridge and the corresponding progress update table.

7. The construction positioning method of the railway bridge according to claim 6, characterized in that During the construction of the railway bridge, determine the actual construction progress of the railway bridge according to the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning point of the construction area, further including: Perform multiple interactions on the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning point of the construction area; Determine the actual construction progress of the railway bridge according to the multiple interactions of the construction progress of the railway bridge, the real-time image of the railway bridge, and the construction positioning point of the construction area.

8. The construction positioning method of the railway bridge according to claim 7, characterized in that Trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge, including: Obtain the actual construction progress of the railway bridge; Determine the completed bridge area in the railway bridge according to the actual construction progress of the railway bridge and the real-time image of the railway bridge; Determine the unfinished bridge area in the railway bridge according to the completed bridge area in the railway bridge and the final shape of the railway bridge.

9. The construction positioning method of the railway bridge according to claim 8, characterized in that, Trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge, further including: Determine the remaining time according to the time spent on the completed bridge area in the railway bridge and the preset completion time in the railway bridge. Determine an urgent plan for the unfinished bridge area of the railway bridge based on the remaining time and the unfinished bridge area in the railway bridge, and trigger the construction control of the unfinished bridge area in the railway bridge according to the urgent plan for the unfinished bridge area in the railway bridge.

10. A construction positioning system for a railway bridge, characterized in that, The construction positioning system of the railway bridge is applied to the construction positioning method of the railway bridge as described in any one of claims 1-9. The construction positioning system of the railway bridge includes: A node position module, configured to determine the node positions of the railway bridge based on the construction drawings of the railway and multiple detection images of the railway ground by an unmanned aerial vehicle; A construction planning route module, configured to determine the construction planning route of the railway bridge according to the node positions of the railway bridge, the construction form of the railway bridge, and the surrounding terrain of the node positions of the railway bridge; A construction area module, configured to determine each construction area of the railway bridge according to the construction planning route of the railway bridge, the construction schedule of the railway bridge, and the construction process table of the railway bridge; A construction positioning module, configured to determine the construction positioning points of the construction area in each construction area based on the area form of the construction area, the area position of the construction area, and the corresponding construction process of the construction area; An actual construction progress module, configured to determine the actual construction progress of the railway bridge during the construction process of the railway bridge according to the construction progress of the railway bridge, the real-time images of the railway bridge, and the construction positioning points of the construction area; A construction control module, configured to trigger the construction control of the unfinished bridge area in the railway bridge based on the actual construction progress of the railway bridge.

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