Cable bridge construction management method and system

Abstract

The invention relates to the field of BIM and cable bridge construction management, and discloses a cable bridge construction management method and system, and the method comprises a project starting stage, a design cooperation stage, a construction management stage, a material management stage, a quality and safety monitoring stage, and a completion acceptance stage. The method is based on the BIM technology, the efficiency, quality and safety of cable bridge construction are improved through full-process management, and information sharing, dynamic scheduling and resource optimization are achieved. The system comprises a project management module, a design collaboration module, a construction management module, a material management module, a quality and safety monitoring module and a completion file management module, all the modules work cooperatively, and efficient transmission and management of information are achieved. Compared with the prior art, the project period can be effectively shortened, resource allocation can be optimized, risk control in the construction process can be enhanced, and landing implementation of green construction can be promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of BIM and cable tray construction management, and in particular to a cable tray construction management method and system. Background Art

[0002] In the field of cable tray construction management, traditional methods mainly rely on manual measurement, manual recording and personnel coordination. This model is not only inefficient, but also prone to data errors, incomplete information and poor communication, which in turn affects the construction progress and quality control. Although the advancement of information technology has promoted the application of computer-aided design (CAD) in the design stage of cable trays and improved the design accuracy, there is still a lack of effective information tools to support on-site operations in actual construction. The progress of the construction stage is often difficult to accurately control, and there is a lack of real-time monitoring of the construction progress, which is prone to delays, shortages or backlogs of materials, resulting in cost overruns and waste of resources.

[0003] At present, some enterprises have introduced mobile devices and applications to simplify on-site data collection, but since these tools usually run independently, they fail to achieve closed-loop linkage with the preliminary design data and fail to give full play to the advantages of informatization. In addition, a few enterprises have tried to introduce BIM software for construction process simulation, but the existing BIM platform often lacks special functions such as cable tray layout path optimization, construction progress tracking and material demand forecasting, which makes it difficult to meet the refined management needs of cable tray construction. Even if some BIM systems have three-dimensional view display functions, they lack intelligent decision-making support mechanisms, making it difficult for project managers to quickly respond to on-site changes, coordinate and dispatch resources, and adjust construction plans in real time. Therefore, the existing cable tray construction management methods have obvious "information island" phenomena, low collaboration efficiency, and lack of integrated intelligent management support. These deficiencies have seriously affected the speed of project advancement and overall quality control, making it difficult to meet the efficient, accurate and dynamic control needs of modern construction management. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a cable tray construction management method and system, which realizes information integration and dynamic management of the entire cable tray construction process through BIM technology to improve construction efficiency, resource utilization and quality control level.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A cable tray construction management method, comprising the following steps: During the project initiation phase, create a project file on the BIM platform, set construction goals and resource allocation; During the design collaboration phase, the design files are imported into the BIM platform and the cable tray layout path is optimized; During the construction management phase, the optimal layout path of the cable tray is determined through the path optimization algorithm, and the construction progress is adjusted through the dynamic construction scheduling algorithm; In the material management stage, material demand forecasting models and inventory control models are used to ensure the timeliness and accuracy of material supply; in the quality and safety monitoring stage, the BIM platform is used to record construction quality data in real time and monitor construction safety hazards; During the completion acceptance stage, construction data is integrated and completion files are generated.

[0006] Preferably, in the path optimization in the construction management stage, a path optimization algorithm is used to optimize the cable tray laying path, and the path optimization algorithm includes the following steps: Set the starting and ending points of the cable tray layout in the BIM platform, and mark walls, pipes and obstacles; Choose the shortest path algorithm or a search algorithm with heuristic evaluation to calculate the optimal layout path; Output and display the layout path on the BIM platform to reduce path length and construction difficulty.

[0007] Preferably, the path optimization algorithm is a Dijkstra algorithm or an A* algorithm, which calculates the shortest path of the cable tray layout path.

[0008] Preferably, in the dynamic construction scheduling in the construction management stage, a dynamic scheduling algorithm is used to optimize the construction progress, and the dynamic scheduling algorithm includes the following steps: Decompose the construction task into several key tasks, and determine the resource requirements, task sequence and prerequisite relationships of each task; Determine the optimal start time and resource allocation for each task through optimization algorithms to minimize the total duration; If the construction progress deviates from the plan, the construction progress will be updated through the BIM platform, and the optimization algorithm will be re-called to adjust the task sequence.

[0009] Preferably, the dynamic scheduling algorithm is a branch and bound method or a genetic algorithm, which optimizes the construction progress according to resource constraints and task dependencies to achieve dynamic adjustment of the construction progress.

[0010] Preferably, in the material demand forecasting in the material management stage, a time series forecasting model is used to forecast the material demand, and the time series forecasting model includes the following steps: Establish demand forecasting model based on historical data and construction progress information; Dynamically adjust model parameters according to construction progress to predict material demand in the future; Output material demand data to provide a basis for inventory control.

[0011] Preferably, the time series forecasting model is an ARIMA model or a long short-term memory neural network model, which are respectively suitable for scenarios with small demand fluctuations and large demand fluctuations to improve forecasting accuracy.

[0012] Preferably, in the inventory control in the material management stage, a dynamic inventory control model is used for inventory management, and the dynamic inventory control model includes the following steps: Set a safety stock threshold and automatically generate a replenishment request when the stock level approaches the threshold; Calculate the optimal inventory ordering quantity and dynamically adjust the ordering frequency based on the construction progress; Monitor inventory changes in real time on the BIM platform to avoid insufficient inventory or inventory backlogs.

[0013] Preferably, the dynamic inventory control model includes a (s, Q) model based on safety stock or a dynamic ordering model based on economic order quantity, so as to minimize inventory costs while meeting construction needs.

[0014] The present invention also provides a cable tray construction management system based on BIM technology, the system comprising: Project management module, used to create project files and set construction goals and resource allocation; Design collaboration module, used to import design files and perform path optimization and conflict detection; Construction management module, used to implement path optimization algorithm and dynamic construction scheduling optimization algorithm; Material management module, used for material demand forecasting and inventory control; Quality and safety monitoring module, used to record quality data during the construction process and monitor safety hazards; The completion file management module is used to integrate construction data and generate completion files.

[0015] The present invention provides a cable tray construction management method and system, which has the following beneficial effects: 1. The present invention realizes information sharing and real-time synchronization among all participants through the BIM platform, avoiding misunderstandings and communication barriers caused by poor information transmission. The data flow between modules enables effective linkage between design, construction, quality management and other links, reduces communication time and cost, and significantly improves project collaboration efficiency.

[0016] 2. Through systematic path optimization and dynamic scheduling algorithms, the present invention significantly shortens the conversion cycle from design to construction. Real-time progress monitoring and task adjustment functions ensure the efficient connection of various construction links, thereby effectively speeding up the progress of the overall project and meeting the high standards of the project party for the construction period.

[0017] 3. The material demand forecasting and inventory control functions in the present invention realize the precise management of construction resources and avoid the backlog and shortage of materials. By optimizing the configuration of manpower, equipment and materials, the waste of construction resources is effectively reduced, the project cost is optimized and controlled, and the economic benefits of the project are improved.

[0018] 4. The present invention has comprehensive risk assessment and safety monitoring functions at each stage, which can monitor environmental data in real time during the construction process and warn of potential safety hazards. Systematic risk management means enable the project team to respond to emergencies in a timely manner, ensure the safety of construction personnel, and significantly reduce safety risks during the construction process.

[0019] 5. Through precise resource planning and material management, the present invention effectively reduces waste during the construction process, which meets the requirements of green buildings and energy conservation and environmental protection. At the same time, the full process data recorded by the BIM platform provides support for the full life cycle management of the building, and promotes the implementation of the sustainable development concept of the construction industry in the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the method flow of the present invention; Figure 2 It is a schematic diagram of the system structure of the present invention.

[0021] Among them, 100, project management module; 200, design collaboration module; 300, construction management module; 400, material management module; 500, quality and safety monitoring module; 600, completion file management module. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to the attached Figure 1 The embodiment of the present invention provides a cable tray construction management method, which realizes intelligent, refined and dynamic management of the cable tray construction process through six steps of project initiation, design coordination, construction management, material management, quality and safety monitoring and completion acceptance, combined with BIM platform and intelligent algorithm. The steps of each stage of the method of the present invention are described in detail below.

[0024] S1. Project start-up phase The project initiation phase aims to create project archives through the BIM platform, clarify construction goals, resource allocation and risk control, and lay the foundation for subsequent design, construction and material management. This step plays an important role in the initial stage of the project, providing accurate planning, resource allocation and management basis for the entire process of cable tray construction, helping to coordinate the information flow between all parties involved and improve the efficiency and accuracy of project management.

[0025] Generally speaking, the BIM platform can centrally manage project files and related data, allowing project managers and construction teams to keep information synchronized throughout the construction cycle. Therefore, implementing step S1 can effectively avoid the occurrence of information asymmetry or omissions.

[0026] In this embodiment, during the project initiation phase, a project file is first created in the BIM platform. The project file includes but is not limited to the project name, project scope, construction area, main participating units, construction objectives, key nodes, resource requirements and construction schedule.

[0027] The information after the archive is created is centrally managed in the BIM platform, so that all project-related personnel can view and update it at any time. This centralized project archive management can ensure the transparency and integrity of project data, thereby playing a role in information transmission and sharing in the subsequent construction process.

[0028] In some embodiments, project files can be updated periodically according to different construction stages to reflect the latest situation at each stage and provide data support for dynamic management.

[0029] During the implementation of the project start-up phase, it is usually necessary to set construction goals and key nodes to provide a clear direction for the smooth progress of the project. Generally speaking, the construction goals include the main technical requirements, time nodes and quality standards of the project, and they are recorded in the project archive through the BIM platform. In one possible implementation method, the setting of construction goals is combined with the preliminary schedule and key process arrangement, and by reasonably dividing the phased goals, it is ensured that the entire project has a basis for phased evaluation.

[0030] As part of resource allocation, the resources required for the project, including human resources, equipment and materials, must be configured on the BIM platform during the project start-up phase.

[0031] Specifically, the resource allocation information includes the estimated demand and allocation location of various resources. For example, the allocation of construction equipment should take into account the spatial layout and demand frequency of the construction site, while the allocation of human resources is based on the scale of the project and the construction schedule to ensure the reasonable allocation of construction personnel.

[0032] In some embodiments, the allocation of human resources can be tracked and adjusted in real time. When the construction progress is not in line with the plan, the BIM platform will record the relevant data and remind the management staff to make corresponding resource adjustments. The resource allocation plan will serve as the basic data for material management and dynamic scheduling in the subsequent steps, providing support for the optimal allocation of resources.

[0033] In addition, risk assessment and control are also required at the project start-up stage. Specifically, the risk management module of the BIM platform is used to identify potential risk factors that may arise during the project construction process and conduct quantitative analysis. Generally, risk assessment includes uncertain factors such as natural conditions, equipment failures, and personnel shortages, and is combined with the impact of the construction environment on various aspects of the project.

[0034] As an option, a matrix method can be used to calculate and sort the probability and impact of different risk factors to form a risk control priority list. In this way, once a certain type of risk occurs, the system will provide corresponding response measures based on priority.

[0035] In some embodiments, the risk control plan can take measures such as pre-stocking key materials, reserving spare construction equipment or increasing spare manpower to enhance the project's risk resistance. If the actual situation fluctuates, the BIM platform will dynamically adjust the control plan according to the real-time changes in risk factors.

[0036] The rationality of resource demand is also an important part of the project start-up phase. In one possible implementation, the prediction algorithm in the BIM platform is combined with the size of the construction area, the difficulty of the construction task and the environmental conditions to dynamically calculate the required resources to ensure the accuracy of resource demand estimation. For example, for the material demand in cable tray construction, the economic order quantity (EOQ) model can be used to calculate the optimal order quantity. The EOQ formula is: Among them, D is the annual demand, S is the cost of each order, and H is the unit inventory holding cost. Through the calculation of the EOQ model, the storage cost and waste of materials can be reduced, ensuring the economy and timeliness of supply of materials during the construction process. For other resource requirements, such as equipment and personnel, similar forecasting models can also be used to calculate reasonable configuration quantities to support the smooth progress of construction.

[0037] During the specific implementation of project archives, construction goals, resource allocation and risk control, the information in the project start-up phase will be continuously updated so that all parties in the subsequent steps can access, query and supplement the data at any time.

[0038] In some embodiments, an automatic reminder function can be set to set reminders for key time nodes in the BIM platform, such as reminding project managers to check resource usage when the construction progress reaches a certain stage, or reminding to replenish materials when the inventory is below the safety threshold. The introduction of the automatic reminder function can effectively improve the timeliness of management and the accuracy of resource allocation.

[0039] In the project start-up phase of this embodiment, the centralized data management, reasonable resource allocation and effective risk control of the BIM platform laid a solid foundation for the entire cable tray construction process. In practice, the information input and management in the project start-up phase can effectively improve the level of project pre-planning, provide support for the efficient execution of the construction process, and make the implementation of subsequent construction management, material management and scheduling optimization more operational and scientific.

[0040] S2. Design collaboration stage The design collaboration phase mainly focuses on preliminary planning and conflict detection of cable tray layout paths in the design phase. Unlike the real-time path adjustment in the construction management phase, this phase focuses on optimizing the layout path using the BIM platform in the design phase, conducting spatial conflict analysis, and providing accurate and feasible design solutions for subsequent construction.

[0041] Generally speaking, path planning in the design phase uses 3D visualization to display the overall structure of the layout plan, so it can more effectively identify possible design problems and make corresponding optimizations before construction begins.

[0042] In this embodiment, the design collaboration stage first imports the design file into the BIM platform and exchanges data with the design institute in real time to generate a three-dimensional model of the cable tray layout. Specifically, the design file includes the preliminary layout path, bracket location, design specifications and related description information of the cable tray. The two-dimensional design file is converted into a three-dimensional layout model in the BIM platform, allowing all participants to view the layout structure of the layout plan in a virtual environment.

[0043] For example, in some embodiments, the hierarchical view control function of the BIM platform can be used to display different systems such as cable trays and building structures, other pipeline facilities, etc. separately, so as to more clearly observe the feasibility of the layout plan.

[0044] In one possible implementation, permission control is also set up during the design collaboration phase to ensure the security and management compliance of design files when they are shared between different parties. For example, construction personnel can only access construction drawings, while design managers can access all design files and change records to ensure data security and compliance.

[0045] After the three-dimensional model is generated, the path planning algorithm is used in the design collaboration stage to preliminarily optimize the cable tray layout path. The path optimization in this stage mainly considers the rationality of the layout path and the economy of the materials, and the algorithm selection focuses on the shortest path and layout rationality. Specifically, the path planning can use the Dijkstra algorithm to calculate the shortest path so as to generate a layout plan with the least material usage during the design stage. The path optimization goal of the Dijkstra algorithm is to select the shortest path from the starting point to the end point of the layout path, and its calculation formula is: L(v)=min(L(u)+d(u,v)) Among them, L(v) represents the shortest path length of node v, and d(u,v) represents the path distance from node u to node v. Through path optimization, the BIM platform can generate an optimal path plan, thereby reducing the material estimation and the complexity of the layout path during the design stage.

[0046] As an option, if the path optimization in the design phase needs to consider multiple layout factors (such as avoiding complex corners or local narrow spaces), the A algorithm can be used for optimization. The A algorithm introduces a heuristic evaluation function h(n) to comprehensively consider the path length and spatial adaptability in the selection of the layout path. The path optimization function of the A* algorithm is: f(n)=g(n)+h(n) Among them, g(n) represents the actual distance from the starting point to node n, and h(n) represents the heuristic distance estimate from node n to the target node.

[0047] In some embodiments, the heuristic function h(n) can be adjusted according to different design requirements, for example, a higher weight is given to paths with greater construction difficulty, so that the algorithm gives priority to layout paths with low construction difficulty when selecting paths.

[0048] After the path planning is completed, the design collaboration stage further uses the conflict detection function of the BIM platform to conduct spatial conflict analysis on the layout plan to identify potential design conflicts.

[0049] For example, in some embodiments, when the layout path of the cable tray overlaps with the building structure column or other equipment and facilities, the conflict detection function of the BIM platform will automatically mark the conflict location and generate corresponding prompts. In general, the marking method of conflict detection can be graded according to the severity of the conflict, such as using different colors to mark minor conflicts, serious conflicts, etc., so that designers can give priority to important conflict locations in subsequent design adjustments.

[0050] In one possible implementation, the results of conflict detection can be used to readjust the path optimization to ensure the integrity of the design. Specifically, in the re-path calculation of the conflicting location, the BIM platform can automatically avoid the conflicting area and generate alternative paths to achieve dynamic updates of the design. For example, if the cable tray layout path needs to avoid certain structural columns, the system will automatically generate a path plan that bypasses the columns to ensure the continuity and accessibility of the layout path.

[0051] In some embodiments, a specific layout priority may also be set during the design collaboration phase so that the system gives priority to retaining layout plans for critical paths or important facilities when performing conflict detection and path updates, thereby further improving the rationality of the design.

[0052] In the final step of design collaboration, the BIM platform updates all optimized design information into the 3D model and forms a visual design report for review and confirmation by all parties involved. Generally, the design report contains details such as the cable tray layout path, conflict locations, and optimization plans, so it can provide a reference for project managers and construction teams. In some embodiments, the design report can display the dynamic changes of the layout path in the form of 3D animation, so that all parties can understand the content of the design adjustment more intuitively.

[0053] In summary, the design collaboration stage of this embodiment realizes the preliminary planning and optimization of the cable tray layout path through path planning algorithms and conflict detection technology, combined with the three-dimensional model generation and dynamic update functions of the BIM platform, and provides an accurate layout plan and optimization basis for subsequent construction management.

[0054] S3. Construction management stage The construction management stage aims to manage the cable tray laying path and task progress in real time during the construction process through dynamic path optimization and construction scheduling algorithms to ensure efficient use of resources and smooth progress of construction.

[0055] Generally speaking, in the construction management stage, the dynamic update function of the BIM platform is used to continuously adjust the layout path and task sequence according to the real-time data of the construction site, thereby improving construction efficiency and reducing unexpected delays. Therefore, in this stage, the dual management of dynamic path optimization and task scheduling optimization can significantly improve the flexibility and accuracy of the construction process.

[0056] In this embodiment, in the construction management stage, the layout path of the cable tray is adjusted in real time according to the real-time data in the construction process through the dynamic path optimization function of the BIM platform. Different from the path optimization in step S2, the path optimization in this step focuses more on the dynamic changes in the construction stage. For example, the path scheme determined in the design stage may not be able to fully adapt to the changes in the construction site (such as the site environment, obstacle location, resource constraints, etc.). In this case, the present invention uses a dynamic path optimization algorithm to adjust the path to adapt to the actual situation of the construction site and ensure that the construction can proceed smoothly.

[0057] Specifically, the dynamic path optimization algorithm in this embodiment can be expanded based on the A* algorithm, and real-time environmental data and resource availability weights are introduced into the path selection, so that the generated path plan can better adapt to the dynamic needs of the construction site.

[0058] In some embodiments, dynamic path optimization can be combined with on-site sensor data to recalculate the path. For example, when a new obstacle is detected at the construction site or the construction area changes, the BIM platform can automatically trigger the path recalculation process and generate a path plan that adapts to the new environment.

[0059] As an option, the dynamic path optimization algorithm can perform a comprehensive evaluation based on the real-time cost of the path (such as distance, time, and resource usage) to ensure that the selected path has the lowest construction cost under current conditions. In this implementation, the objective function of path optimization is to minimize the real-time cost function f(n), which is in the form of: f(n)=g(n)+h(n)+c(n) Among them, g(n) represents the path distance from the starting point to the current node, h(n) represents the heuristic estimated distance from the current node to the target node, and c(n) is the resource consumption cost under on-site conditions. For example, when construction equipment is limited or materials are in short supply, the path algorithm will tend to choose a path with less resource consumption to ensure that construction proceeds normally under limited resource conditions.

[0060] In this embodiment, after the dynamic path optimization is completed, the BIM platform will update the layout model in real time so that the construction team can obtain the latest layout plan.

[0061] In some embodiments, the path optimization solution will be combined with the dynamic scheduling system so that the path optimization results can simultaneously affect the task scheduling to ensure the rationality of the task progress and the optimal allocation of resources. Through this linkage optimization of path and scheduling, the system can better adapt to the dynamic changes on site.

[0062] On the basis of path optimization, this embodiment also realizes dynamic construction scheduling optimization through the BIM platform to reasonably allocate tasks and ensure that the project proceeds as planned. Specifically, construction tasks are usually broken down into several key tasks, and the priority, resource requirements and pre-relationship of each task are set through the scheduling model of the BIM platform. In general, construction scheduling is dynamically adjusted through real-time data feedback and optimization algorithms, thereby minimizing resource waste and progress deviation.

[0063] In one possible implementation, the system uses a genetic algorithm or branch-and-bound method to dynamically adjust the order of construction tasks and resource allocation so that the construction tasks are always in the optimal state. The fitness function of the genetic algorithm is the total completion time of the task, and the goal is to minimize the project duration, that is: Among them, Finish(Ti) is the actual completion time of task Ti. By optimizing the task sequence and resource allocation, the system can effectively shorten the project duration and improve resource utilization.

[0064] During the scheduling optimization process, the BIM platform also records the data of the construction site in real time, including resource usage, equipment status and task completion progress. When the system detects progress deviation or resource anomalies (such as manpower shortage or equipment failure), the scheduling algorithm will recalculate the order of tasks and resource allocation to ensure that the project proceeds as planned.

[0065] For example, in some embodiments, if a critical task is delayed, the system will automatically allocate additional resources or adjust the execution order of other tasks to reduce the impact of the delay on the project. The dynamic scheduling algorithm can ensure the stability of project duration and resource management by quickly responding to changes in the construction site.

[0066] In the construction management stage of this embodiment, the construction team records and updates the construction progress by uploading construction logs and on-site photos every day to ensure that managers can dynamically grasp the real-time progress of the project. In general, progress management should be carried out in conjunction with the project's phased goals, so after each key process is completed, the system can automatically remind managers to conduct phased inspections.

[0067] As an option, wireless communication equipment can be equipped to ensure that construction site data can be uploaded in real time, and the data caching function can be enabled when network conditions are poor, and the data will be automatically uploaded after the signal is restored, ensuring data continuity and reliability.

[0068] In one possible implementation, the construction management phase will also dynamically adjust the construction schedule based on real-time data. For example, when progress is lagging or resources are scarce, managers can be advised to appropriately increase manpower or equipment, or optimize task scheduling to ensure that the project is completed as planned.

[0069] In summary, in the construction management stage of this embodiment, the synergy of dynamic path optimization and construction scheduling algorithm is used to achieve real-time adjustment of the construction process. This management method not only ensures the dynamic adaptability of the layout path, but also improves construction efficiency and reduces progress deviation through reasonable resource allocation and task scheduling optimization.

[0070] S4. Material management stage The material management stage ensures the timely supply and accurate management of materials during the cable tray construction process through the material demand forecasting model and inventory control model. In the material management stage, the future material demand and inventory status are predicted and adjusted in real time under the dynamic environment of construction.

[0071] Generally speaking, material management analyzes material demand based on the construction progress through the material demand forecasting and inventory control modules of the BIM platform to ensure that there is no backlog or shortage of materials during the construction process, thus effectively optimizing the economy and supply stability of materials.

[0072] In this embodiment, the warehouse inventory status is monitored in real time to ensure the timeliness and accuracy of material supply. Barcode scanners and RFID tags are used for inventory tracking, and quantity and batch information can be quickly recorded when materials enter and leave the warehouse.

[0073] As an option, replenishment requests can be automatically generated when inventory falls below a preset threshold to ensure that supplies are replenished in a timely manner. For example, before the installation of a cable tray, the system can automatically check the inventory of the cable trays, brackets and fasteners required for the installation, and trigger the procurement process in advance if the inventory is insufficient.

[0074] In this embodiment, the material management stage first uses the material demand forecasting model of the BIM platform to predict future material demand based on historical data and construction progress. Specifically, the material demand forecasting model can use a time series forecasting model (such as an ARIMA model) or a long short-term memory neural network model (LSTM) to adapt to demand forecasting under different fluctuations.

[0075] In some embodiments, for construction stages where demand changes are relatively stable, the ARIMA model can be used to perform linear prediction of material demand; while in construction stages where demand fluctuates greatly, the LSTM model is preferred to adapt to complex nonlinear changes.

[0076] In general, the ARIMA model is suitable for time series forecasting of stationary demand, and fits historical demand data through autoregression, difference and moving average. The basic expression of the ARIMA model is: y t =c+φ 1 yt-1 +…+φ p y t-p +∈ t +θ 1 ∈ t-1 +…+θ q ∈ t-q Among them, y t is the demand at the current time t, c is a constant term, φ and θ are model parameters, ∈ t is the error term. Through the above formula, the system can use the historical material usage data recorded in the BIM platform to estimate the material demand in the future construction phase.

[0077] In some embodiments, the BIM platform dynamically adjusts the parameters of the ARIMA model based on the real-time updated construction progress so that the prediction results can more accurately match the current construction needs.

[0078] As an option, if there is a large fluctuation in material demand, or the demand change trend is difficult to accurately describe through linear prediction, the LSTM neural network model can be preferably used for demand forecasting in this embodiment. The LSTM model models long time series data through the memory unit of the neural network, which is suitable for nonlinear and complex demand forecasting scenarios.

[0079] For example, in the construction stage where multiple construction areas are working in parallel and weather has a significant impact, the LSTM model can be used to improve the adaptability of prediction. The LSTM model uses the hidden layer state and memory units at the previous moment to determine the output at the current moment, and optimizes the network parameters through back propagation, so that the model has high-precision prediction capabilities for long sequence data.

[0080] After the material demand forecast is completed, the inventory control model of the BIM platform is further used in the material management stage to adjust the inventory level in real time to ensure that the material inventory at the construction site is neither in short supply nor in excess. In general, the inventory control model can adopt the (s, Q) model or the dynamic economic order quantity (EOQ) model to dynamically adjust the inventory safety threshold and order quantity according to the actual demand fluctuations. Specifically, the (s, Q) model manages inventory by setting the safety stock level s and the replenishment quantity Q. When the inventory drops below s, an order request is automatically triggered, and the replenishment quantity is Q.

[0081] In some embodiments, the setting of inventory levels may also be based on the results of a demand forecasting model, and the forecasting data may be used in conjunction with the inventory model to ensure flexibility in inventory control.

[0082] As an implementation method, the dynamic EOQ model further optimizes the order quantity and order frequency of materials through dynamic adjustment to reduce inventory management costs. The basic formula of the dynamic EOQ model refers to the description in step S1. Through this formula, the dynamic EOQ model can automatically update the optimal order quantity when construction demand changes to reduce holding costs and ordering costs.

[0083] In some embodiments, the parameters of the EOQ model can be adjusted regularly according to the construction progress, so that the ordering frequency and quantity are more in line with the actual needs of the site, further reducing the inventory occupancy cost of materials.

[0084] In this embodiment, under the dynamic update of the inventory control model, the BIM platform can automatically track the inventory status of the construction site through the real-time material monitoring module. When the inventory level approaches the safety threshold s, the system will automatically generate a replenishment request to ensure the continuity of material supply. In general, the BIM platform can directly connect the replenishment request with the supply chain system to achieve automatic replenishment of materials to reduce manual intervention. Therefore, during the construction stage where the demand for materials fluctuates greatly, the dynamic adjustment of the inventory control model can ensure the stability of materials in the construction process and reduce the risk of shutdown due to material shortages.

[0085] In summary, this embodiment achieves refined management of materials in the material management stage through demand forecasting and inventory control models, combined with the dynamic monitoring and automatic replenishment functions of the BIM platform. The material management stage not only provides timely and accurate material support for the construction site, but also reduces material costs through dynamic forecasting and control, achieving high efficiency and reliability of material management.

[0086] S5: Quality and safety monitoring stage The quality and safety monitoring phase mainly uses the quality monitoring and safety monitoring modules of the BIM platform to conduct real-time management and feedback on quality control and safety hazards during the construction process. This phase focuses on the compliance monitoring of construction quality and the detection of the safety environment of the construction site to ensure the compliance and safety of all operations during the cable tray installation process.

[0087] Generally speaking, during the quality and safety monitoring stage, the data collection and analysis functions of the BIM platform can provide real-time feedback of various quality inspection results and safety hazard data to the project management system. Therefore, construction management personnel can make timely adjustments and decisions based on these data, thereby improving the quality stability and safety of the construction process.

[0088] In this embodiment, in the quality and safety monitoring stage, the BIM platform first collects and analyzes the quality data of each process in the cable tray installation process through the quality monitoring module. Specifically, the quality monitoring includes the accuracy of the cable tray layout path, the stability of the bracket installation, the compliance of the layout materials, and the achievement of the grounding requirements.

[0089] In some embodiments, it is possible to determine whether the installation quality of the cable tray meets the design specifications through images and data collected by quality sensors or scanning equipment at the construction site.

[0090] As an option, the BIM platform can automatically perform comparative analysis on each quality monitoring data, comparing the current construction quality with the design drawings or standard specifications to quickly identify quality deviations.

[0091] Generally speaking, the quality monitoring module in the BIM platform can also set quality control parameters to ensure that key quality indicators in construction meet the requirements. Therefore, during the cable tray installation process, once the detection data deviates from the preset standard, the BIM platform will automatically issue an alarm to notify the construction personnel to make corrections.

[0092] For example, in some embodiments, if it is detected that the position or angle of the bracket installation is inconsistent with the design drawing, the system will mark the abnormal position and generate a warning prompt to remind the construction personnel to recheck or adjust it in the next stage.

[0093] In another possible implementation, the BIM platform can send quality monitoring results to project managers in real time, allowing managers to remotely view construction quality status and arrange on-site inspections and corrections when necessary to improve the real-time and accuracy of quality management.

[0094] In addition to quality monitoring, this embodiment also implements real-time monitoring of the construction environment and personnel safety through the safety monitoring module of the BIM platform. Specifically, the safety monitoring module combines on-site sensor equipment and video monitoring systems to continuously collect environmental parameters of the construction area, such as temperature, humidity, gas concentration, equipment status, etc.

[0095] In some embodiments, the safety monitoring module in the BIM platform will preset safety thresholds. When the environmental parameters of the construction site exceed the safety range (such as abnormally high gas concentration, abnormal equipment vibration, etc.), the system will automatically trigger an alarm to remind managers to take necessary countermeasures.

[0096] As an option, the safety monitoring module can also be linked with the construction workers’ safety equipment, such as smart helmets, wearable sensors, etc., to track the workers’ activities and safety status in real time.

[0097] For example, in some embodiments, the smart safety helmets equipped by construction workers can detect wearing conditions and location data. If a person is active in an unauthorized area or falls accidentally, the safety monitoring module will immediately generate an alarm to notify the on-site safety officer to provide rescue or intervention.

[0098] In addition, in high-risk workplaces, such as construction at high altitudes or in confined spaces, the BIM platform can also set regional safety restrictions, requiring construction workers entering these areas to wear specific safety equipment, further improving the safety of the construction site.

[0099] In order to improve the effectiveness and real-time nature of safety data, the safety monitoring module of this embodiment can combine the real-time monitoring and analysis function of the BIM platform to dynamically generate a risk assessment report for the construction site. Specifically, the system continuously monitors and counts the changes in environmental parameters on site to analyze the probability of safety hazards at different construction stages. For example, during a period of frequent use of construction equipment, the system may predict that the risk of equipment failure during this period is high, and then prompt managers to strengthen equipment maintenance inspections to avoid failures.

[0100] In some embodiments, the system can also combine historical safety data of the construction to predict future risks through regression analysis or probability models to generate a forward-looking safety management plan.

[0101] In this embodiment, the data analysis results in the quality and safety monitoring stage will be uniformly archived in the project management module of the BIM platform for subsequent reference and analysis by project managers. In general, the archived content of quality and safety data includes test items, time, test results, abnormal situation records and treatment measures, etc. Therefore, the archived quality and safety data can be used for the overall quality and safety assessment of the project, and provide data support for the quality control and safety management of subsequent projects.

[0102] As an option, the BIM platform can also generate quality and safety data in the form of charts or reports based on the needs of the construction party and the management party, so as to provide detailed records and analysis during project summary and acceptance.

[0103] In summary, the quality and safety monitoring stage of this embodiment realizes the quality control and safety assurance of the construction process through the quality monitoring and safety monitoring modules of the BIM platform, combined with real-time sensor data, intelligent device feedback and data analysis functions. On this basis, the project management party can efficiently manage and control the quality and safety status of the construction, which helps to reduce the risk of quality defects and safety accidents during the construction process.

[0104] S6. Completion acceptance stage During the completion acceptance phase, all data from the construction process is integrated through the BIM platform to generate a complete completion file, providing data support for the final acceptance and subsequent operation and maintenance of the project. The main task of this phase is to confirm the quality and archive the data of the completed construction process to ensure that all processes meet the design requirements and provide detailed and accurate reference information for the later maintenance of the building after the project acceptance is completed.

[0105] Generally speaking, the completion acceptance stage will systematically integrate data such as design documents, construction logs, material usage records and quality inspection reports, so that a complete data closed loop can be formed at this stage to ensure the traceability and transparency of construction data.

[0106] In this embodiment, at the completion acceptance stage, the BIM platform first systematically integrates all data recorded during the construction period to generate a completion file. Specifically, the completion file includes design documents, layout paths, construction logs, material usage, quality and safety inspection records, and other construction process data.

[0107] In some embodiments, the BIM platform will automatically summarize the files and test data generated at each stage, organize the relevant data by multiple dimensions such as process, equipment, and materials through data cleaning and classification archiving, and ensure that each data has a clear source and record.

[0108] As an option, the completion archives can be organized in layers through the modular management function of the BIM platform, which is convenient for quick access in different application scenarios. For example, in the completion archives, quality and safety inspection data can be stored according to the layout area and inspection indicators, and the use of materials can be stored according to multi-dimensional indexes such as material category, batch, supplier, etc., to improve the retrieval efficiency of the completion archives. In general, the BIM platform also provides data search and filtering functions, so project managers can quickly find specific construction data through keywords, which facilitates the summary and analysis of the project.

[0109] After the completion files are integrated, the completion acceptance stage also requires quality inspection and on-site acceptance confirmation against the design model and construction records in the BIM platform.

[0110] In this embodiment, the quality inspection during the acceptance process includes inspections of the cable tray layout path, the installation accuracy of the bracket, the compliance of material specifications, and the quality records during the construction process.

[0111] For example, in some embodiments, the cable tray layout path in the 3D model can be compared with the on-site layout to confirm whether the actual construction fully complies with the design drawing requirements. For items that need to be rechecked, the BIM platform will generate a to-be-processed list so that managers can check each item and record the inspection results.

[0112] Specifically, on-site image acquisition equipment can also be used during the acceptance process to compare the actual installation conditions with the design conditions in the BIM model.

[0113] As a possible implementation method, the BIM platform supports superimposing on-site images or scanned data onto the 3D model, and through automatic comparative analysis, identifies deviation locations and non-conformities. For example, if the bracket installation position of a cable tray deviates from the design model, the system can generate a deviation report and mark the specific location so that the project acceptance personnel can make corrections one by one for the deviation. Generally speaking, this digital acceptance process can significantly reduce the impact of human factors, so the acceptance results are more accurate and consistent.

[0114] In order to ensure that the completion archive can provide support for the later operation and maintenance of the building, this embodiment also stores and marks key data in a structured manner so that it can be quickly referenced during later maintenance and renovation. For example, the BIM platform will use a unified coding standard to record key information such as the cable tray layout path, bracket specifications, and material batches, so that specific cable tray components and layout paths can be directly located during the future building operation and maintenance process.

[0115] In some embodiments, the quality inspection records in the completion files can also be marked so that subsequent operation and maintenance personnel can quickly understand the quality status and historical inspection data of each node, reducing repeated inspections and unnecessary inspection steps.

[0116] As an extension, the completion files of the BIM platform can be shared through the cloud or exported as data files in other formats so that project managers and owners can access them on different terminals. For example, the BIM platform can export the completion files into PDF, Excel and other file formats, and attach quality inspection reports, on-site photos and completion drawings, etc., to ensure that the completion data can be accessed in different environments.

[0117] In addition, during the subsequent operation and maintenance of the building, the key quality data and inspection data in the completion archive can be used as the basis for regular maintenance, thereby further extending the service life of the building and improving safety.

[0118] In summary, this embodiment integrates all the data in the construction process through the BIM platform during the completion acceptance stage, and checks and confirms the acceptance against the design model to form a complete completion file. On this basis, the completion file provides detailed reference information for subsequent building operation and maintenance, which helps to achieve the management of the entire life cycle of the building.

[0119] The cable tray construction management system based on BIM technology described below and the cable tray construction management method based on BIM technology described above can be referenced to each other.

[0120] Please refer to the attached Figure 2 The present invention also provides a cable tray construction management system based on BIM technology, the system comprising: Project Management Module 100 The project management module 100 is responsible for the initial management of the construction project, including creating project files, setting construction goals, formulating resource allocation plans and conducting risk assessments. Generally, when a project is launched, this module will centrally record the basic information of the project through the BIM platform, such as the project name, construction area, construction period and quality standards, and set phased goals and progress plans.

[0121] In the project management module 100, managers can flexibly set resource requirements according to the project scale and complexity to ensure the reasonable allocation of construction resources. In some embodiments, the project management module also includes a risk assessment function, which uses historical data and project environmental parameters to quantitatively analyze potential risks and generate corresponding risk reports to help managers formulate risk control measures in advance. In order to improve the practicality of the system, this module recommends the use of commercial software with data processing capabilities and a friendly interface to facilitate project managers' operations and decision-making.

[0122] Design Collaboration Module 200 The design collaboration module 200 is used to import design files and realize data exchange with the design institute during the design stage. The imported design files generate a three-dimensional layout model, and perform path optimization and conflict detection to ensure the rationality and safety of the layout path. In this embodiment, the design collaboration module needs to support seamless connection with mainstream BIM design software to ensure accurate transmission and real-time sharing of design data.

[0123] In the design collaboration module 200, the path optimization algorithm and conflict detection function can automatically identify potential conflicts in the layout path, generate conflict reports and provide optimization suggestions to ensure the adaptability of the design solution. In some embodiments, the design collaboration module can set access rights according to actual needs to ensure the data access scope of different construction parties in order to protect the security of design data.

[0124] Construction Management Module 300 The construction management module 300 is used to implement the path optimization algorithm and dynamic construction scheduling algorithm during the construction phase to adjust the construction tasks and resource allocation in real time. Through dynamic construction scheduling, the system can recalculate the task sequence and resource allocation when the on-site environment changes, ensuring the controllability of the construction period and the continuity of construction.

[0125] In some embodiments, the construction management module 300 supports real-time uploading of construction logs and on-site photos so that managers can dynamically grasp the progress of the project. In addition, the module is equipped with wireless communication and cloud storage services, which can cache data even when the network condition is poor, and automatically upload after the signal is restored to ensure the timeliness and continuity of the data. In this embodiment, this module ensures the intelligent and real-time nature of construction management, which can effectively reduce delays and waste of resources.

[0126] Material Management Module 400 The material management module 400 is used to monitor the inventory status of the warehouse in real time and predict the future material demand based on the demand forecasting model to ensure timely and sufficient supply of materials during the construction process. The module supports barcode scanners and RFID tags, which can quickly record the in and out information of materials and achieve accurate inventory management. The module is connected to the supply chain management system. When the material inventory is lower than the safety threshold, a replenishment request is automatically generated to ensure that the material supply at the construction site is not affected.

[0127] In some embodiments, the material management module 400 also optimizes the inventory level through a dynamic inventory control model, and uses the results of demand forecasting to adjust the ordering frequency and quantity to avoid inventory backlogs or material shortages, thereby achieving refined control of inventory.

[0128] Quality and Safety Monitoring Module 500 The quality and safety monitoring module 500 is mainly responsible for recording the quality data during the construction process and monitoring the potential safety hazards in the construction environment. Quality monitoring includes the quality of cable tray layout, the stability of bracket installation, and the achievement of grounding requirements, etc., to ensure that the construction meets the standards. During the construction process, the safety monitoring module collects data such as temperature and humidity, gas concentration, and equipment status through environmental sensors. Once an abnormality is detected, an alarm prompt will be issued immediately.

[0129] In some embodiments, the quality and safety monitoring module 500 generates a quality and safety report every week, summarizing various test results and abnormal records, and provides improvement suggestions to managers so that safety hazards can be eliminated in a timely manner in subsequent construction to ensure construction quality.

[0130] Completion File Management Module 600 The completion file management module 600 is used to integrate the design documents, construction logs, material use records, quality inspection reports, safety inspection records and other data of the entire project into a system after the construction is completed to generate a completion file. The completion file is stored in the system in a hierarchical structure and provides a retrieval function to facilitate quick reference during subsequent maintenance and renovation.

[0131] In some embodiments, the completion files can be exported into multiple formats (such as PDF or Excel) for retention by project managers and owners, and can be accessed across regions through cloud storage, enabling sharing and remote viewing of project files, and improving the convenience of subsequent maintenance work.

[0132] The system of this embodiment can be used to execute the above method embodiments, and its principles and technical effects are similar, which will not be repeated here.

[0133] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable tray construction management method, characterized in that: The following steps are involved: During the project initiation phase, create a project file on the BIM platform, set construction goals and resource allocation; During the design collaboration phase, the design files are imported into the BIM platform and the cable tray layout path is optimized; During the construction management phase, the optimal layout path of the cable tray is determined through the path optimization algorithm, and the construction progress is adjusted through the dynamic construction scheduling algorithm; In the material management stage, material demand forecasting models and inventory control models are used to ensure the timeliness and accuracy of material supply; During the quality and safety monitoring phase, the BIM platform is used to record construction quality data in real time and monitor construction safety hazards; During the completion acceptance stage, construction data is integrated and completion files are generated.

2. A cable tray construction management method according to claim 1, characterized in that: In the path optimization of the construction management stage, a path optimization algorithm is used to optimize the cable tray layout path, and the path optimization algorithm includes the following steps: Set the starting and ending points of the cable tray layout in the BIM platform, and mark walls, pipes and obstacles; Choose the shortest path algorithm or a search algorithm with heuristic evaluation to calculate the optimal layout path; Output and display the layout path on the BIM platform to reduce path length and construction difficulty.

3. A cable tray construction management method according to claim 2, characterized in that: The path optimization algorithm is a Dijkstra algorithm or an A* algorithm, which calculates the shortest path of the cable tray layout path.

4. A cable tray construction management method according to claim 1, characterized in that: In the dynamic construction scheduling of the construction management stage, a dynamic scheduling algorithm is used to optimize the construction progress. The dynamic scheduling algorithm includes the following steps: Decompose the construction task into several key tasks, and determine the resource requirements, task sequence and prerequisite relationships of each task; Determine the optimal start time and resource allocation for each task through optimization algorithms to minimize the total duration; If the construction progress deviates from the plan, the construction progress will be updated through the BIM platform, and the optimization algorithm will be re-called to adjust the task sequence.

5. A cable tray construction management method according to claim 4, characterized in that: The dynamic scheduling algorithm is a branch and bound method or a genetic algorithm, which optimizes the construction progress according to resource constraints and task dependencies to achieve dynamic adjustment of the construction progress.

6. A cable tray construction management method according to claim 1, characterized in that: In the material demand forecasting in the material management stage, a time series forecasting model is used to forecast the material demand, and the time series forecasting model includes the following steps: Establish demand forecasting model based on historical data and construction progress information; Dynamically adjust model parameters according to construction progress to predict material demand in the future; Output material demand data to provide a basis for inventory control.

7. A cable tray construction management method according to claim 6, characterized in that: The time series forecasting model is an ARIMA model or a long short-term memory neural network model, which are respectively suitable for scenarios with small demand fluctuations and large demand fluctuations to improve forecasting accuracy.

8. A cable tray construction management method according to claim 1, characterized in that: In the inventory control of the material management stage, a dynamic inventory control model is used for inventory management, and the dynamic inventory control model includes the following steps: Set a safety stock threshold and automatically generate a replenishment request when the stock level approaches the threshold; Calculate the optimal inventory order quantity and dynamically adjust the order frequency according to the construction progress; Monitor inventory changes in real time on the BIM platform to avoid insufficient inventory or inventory backlogs.

9. A cable tray construction management method according to claim 8, characterized in that: The dynamic inventory control model includes a (s, Q) model based on safety stock or a dynamic ordering model based on economic order quantity to minimize inventory costs while meeting construction needs.

10. A cable tray construction management system, used to execute the method according to any one of claims 1 to 9, characterized in that: The system comprises: Project management module, used to create project files and set construction goals and resource allocation; Design collaboration module, used to import design files and perform path optimization and conflict detection; Construction management module, used to implement path optimization algorithm and dynamic construction scheduling optimization algorithm; Material management module, used for material demand forecasting and inventory control; Quality and safety monitoring module, used to record quality data during the construction process and monitor safety hazards; The completion file management module is used to integrate construction data and generate completion files.

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