Digital construction organization 4D analogue simulation method

Abstract

The invention discloses a digital construction organization 4D analogue simulation method, which comprises the following steps of S1, determining an integral construction group; s2, simulating a construction scheme; s3, optimizing a construction scheme; s4, performing field tracking and iterative updating; and S5, progress optimization. The method has the advantages that the BIM three-dimensional construction model of the key control engineering of the expressway is created by utilizing a three-dimensional simulation technology, comprehensive performance evaluation is carried out on the model, construction organization design is carried out on the model, a reasonable construction procedure and a reasonable component movement relation are constructed, and 4D visual dynamic simulation of the whole construction process is realized.

Description

Technical Field

[0001] The invention relates to the technical field of highway construction, and in particular to a digital construction organization 4D simulation method. Background Art

[0002] Highway projects have long routes, involve many types of projects, and have high difficulty and complexity in construction organization. Traditional construction techniques have made it difficult to effectively improve the efficiency and quality of project construction. Summary of the invention

[0003] The purpose of the present invention is to provide a digital construction organization 4D simulation method to solve the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A digital construction organization 4D simulation method includes the following steps:

[0006] S1. Establishment of overall implementation group:

[0007] Based on the simulation and analysis capabilities of BIM's digital technology, the construction phases can be quickly divided before the construction schedule is compiled, and the starting point location of each unit project and the reasonable construction sequence can be determined; the BIM model of the key control project of the expressway is created with 3D modeling software, and the elements of the model are comprehensively evaluated using professional analysis software, and the corresponding 3D construction model is established. The model is then used for construction organization design, and a reasonable construction process and component movement relationship are constructed, and a detailed construction schedule is compiled to formulate an overall construction plan;

[0008] S2. Construction plan simulation:

[0009] Systematically conduct simulation of special construction plans, process simulation and multi-plan comparison simulation for highway projects;

[0010] S3. Construction plan optimization:

[0011] Complete construction simulation, conduct analysis and demonstration, and after calculating the time parameters of each project task, find out the key routes and key tasks, optimize the key tasks in a targeted manner, adjust the construction schedule, and ensure the construction time of the construction sequence on the key routes without affecting the total construction period. By adjusting the construction time of the construction process on the non-critical routes, the overall construction plan is optimized to ensure the rationality of the construction sequence, the appropriate connection between the processes, and the balanced construction rhythm;

[0012] S4, on-site tracking and iterative updates:

[0013] By defining resource appearance configuration for the 3D information model, the traditional schedule compiled by the schedule department and the 3D model established by the BIM model department are visually combined. Through the early simulation of the model, the model is re-divided and processed, and a supplementary 3D model or schedule is created, and new construction information is continuously added. In the process of continuous progress of the project and continuous review by management personnel, multiple iterations are carried out to finally derive the construction simulation plan and complete the construction simulation;

[0014] S5. Progress optimization:

[0015] Under the premise of ensuring the total construction period, the supply of labor, materials and machinery during the construction process is dynamically simulated through 4D to determine the resource allocation needs of the construction site, and the progress is optimized based on the actual situation.

[0016] Preferably, step S1 specifically includes the following contents:

[0017] S11. Simulate and analyze the rationality of construction phase division;

[0018] S12. Design and create BIM models for key control projects of expressways, ensure the precision and accuracy of BIM models, meet actual project requirements, discover potential problems in advance and make adjustments, and provide a reliable foundation for subsequent overall implementation plans;

[0019] S13. Establish a three-dimensional construction model and construction organization design;

[0020] S14. Develop a construction schedule: Prepare a detailed construction schedule based on the 3D construction model and organizational design; determine the start and end time, process arrangement and key nodes of each construction phase to ensure that the construction progress is controllable;

[0021] S15. In conjunction with the construction schedule, formulate a comprehensive overall construction plan to ensure that the construction progresses smoothly and is completed as planned.

[0022] Preferably, step S11 includes:

[0023] Use BIM's simple process editing function to quickly divide the construction phases and determine the starting point of each unit project without considering parallel or cross-processes, ensuring that the construction phase division conforms to the actual project logic and does not cause process conflicts;

[0024] Check the rationality of the division of construction stages, confirm whether the construction starting point flow and construction sequence are reasonable and feasible, verify the logical relationship between each process within the construction stage, and ensure the correct construction sequence.

[0025] Preferably, step S13 includes,

[0026] According to the construction requirements, the corresponding 3D construction model is established, the actual construction process of the components is considered, the construction site layout and component placement are determined, and the construction details are displayed;

[0027] Design reasonable construction procedures and component movement relationships to ensure smooth construction process; consider construction team collaboration and safe production, and formulate a detailed construction organization plan.

[0028] Preferably, the special construction plan simulation includes:

[0029] Decompose the construction project, master the detailed design drawings and technical specifications of each construction section; clarify the construction starting point, flow direction and main construction procedures, and form a basic database;

[0030] Based on the constraints of each operation, a detailed construction schedule is drawn up for each sub-project and a construction plan is formulated; possible conflict points between parallel and cross operations are identified and marked, critical paths are confirmed, and the process with the greatest impact on the total construction period is determined;

[0031] Focus on detailed simulation of key processes to evaluate the rationality of their planned execution; test the effectiveness of process connection and resource allocation in simulation;

[0032] Prepare comprehensive resource allocation and material supply plans to ensure uninterrupted progress of the process; arrange the entry sequence and storage specifications to support the implementation of continuous operations.

[0033] Preferably, the process simulation includes:

[0034] Use BIM technology to build a 3D model of the project, covering shape, size and location information; through collaborative design among various disciplines, form a complete 4D schedule model and 5D cost model;

[0035] Simulate various construction processes in a 3D environment to identify potential construction difficulties in advance; focus on simulating specific construction contents of foundations, bridges, and drainage;

[0036] Adjust construction design and process based on discovered problems to form a closed feedback loop; record optimized process flow and improve construction plan documentation;

[0037] During the simulation process, safety monitoring points are set up to simulate safety risks and their control measures, and quality monitoring elements are added to ensure that the process implementation meets the design requirements.

[0038] Preferably, the multi-scheme comparison simulation includes:

[0039] Propose multiple construction plans based on site conditions and construction requirements, and compare the implementation conditions, resource requirements and potential difficulties of each plan;

[0040] Use software to simulate multiple options and evaluate the performance of each option in terms of schedule, cost and resource utilization; use weighted scoring method and / or hierarchical analysis method to conduct a comprehensive evaluation of each construction option;

[0041] Determine the best construction plan through comprehensive evaluation, analyze its feasibility and risks in implementation, specify an implementation plan, and reserve backup plans for special or emergency situations.

[0042] Preferably, step S3 specifically includes the following contents:

[0043] S31. Use 4D construction simulation to identify key routes and key tasks, and optimize key tasks in a targeted manner, so as to optimize the overall construction plan of the highway project and ensure that each construction process and construction rhythm are reasonable;

[0044] S32. Based on the intuitive display of 4D construction simulation, simulate the duration of the inspection work and the rationality of the logical relationship, and make adjustments and optimizations.

[0045] Preferably, step S4 specifically includes the following contents:

[0046] S41. Establish a BIM site model and plan the construction site layout in advance;

[0047] S42. According to the large-scale lifting and transportation machinery model and lifting process determined in the plan, 4D simulation of the machinery working process is carried out; through dynamic simulation of the working range and travel route, the optimal layout position is determined to ensure the working capacity of the crane arm within the range of activity and to ensure that there are no blind spots;

[0048] S43. On this basis, conduct 4D construction simulation on the transportation status of material resources, reasonably plan the material storage site, and determine the layout of the large site;

[0049] S44. According to the construction simulation, determine the time sequence and route of resources approaching the site, reasonably arrange the progress plan and resource entry, reduce secondary transportation, and ensure the progress and cost of the project.

[0050] Preferably, step S5 further includes:

[0051] The progress optimization results based on 4D are used to guide construction and ensure that all work is carried out in an orderly manner. Construction personnel can add various time parameters for components during the construction process. Management personnel can use 4D progress to intuitively and quickly query and track the progress of on-site construction, optimize key tasks in a targeted manner, adjust the construction schedule, continuously optimize the project construction organization plan, reduce redundant links, and improve the rationality, logic and efficiency of the construction sequence.

[0052] The beneficial effects of the present invention are as follows: 1. The present invention utilizes BIM virtual construction technology to simulate the entire construction process, allowing team technicians to be familiar with the construction process and construction process technical flow before construction, thereby improving the refined management level of highway construction skills. 2. The present invention utilizes BIM's 4D related database, and virtual construction technology can quickly and accurately obtain the basic amount of data in the process, providing timely and accurate data support for the formulation of engineering construction plans, and also providing data support for cost management and control. 3. The present invention is based on BIM's 4D dynamic virtual construction, optimizes construction organization, and reflects construction difficulties in advance. Based on animation rendering, a visual display of the construction process is realized. With the effective display of BIM virtual construction technology, complex spatial standard designs can be displayed more intuitively, which facilitates the understanding and use of construction technicians, and effectively avoids construction errors and other problems caused by misunderstandings when construction technicians view drawings, etc., thereby reducing errors in highway engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 is a visual progress diagram of the simulation method in an embodiment of the present invention;

[0054] Figure 2 It is a flow chart of the simulation method in an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] like Figure 1 and Figure 2 As shown, in this embodiment, a digital construction organization 4D simulation method is provided. This method first needs to apply BIM-based digital technology to create a three-dimensional digital information model, and then automatically generate two-dimensional graphic information and a large amount of related non-graphical engineering project data information from the model. With the help of the powerful parametric design capabilities of the software, the information management of the entire highway engineering project can be coordinated, and feedback on project design, workload, progress and calculation can be obtained in a timely manner, which greatly reduces the waste of resources caused by inconsistent coordination documents and data information. Similarly, the BIM model created using BIM-based digital technology can be easily converted into an engineering component with real attributes, and various construction resources (materials, labor and mechanical equipment) are associated, thereby realizing the virtual construction 4D simulation based on BIM digital technology. The method of the present invention specifically includes the following five parts:

[0057] 1. Establishment of the overall implementation team

[0058] Based on the simulation and analysis capabilities of BIM's digital technology, when the construction schedule is not compiled, the simple process editing and other functional modules can be used to quickly divide the construction phases and determine the starting position of each unit project and the reasonable construction sequence. At this time, parallel and cross process operations can be ignored, and simulation analysis can be performed to determine whether the division of construction sections is reasonable, whether the construction starting point flow and construction sequence are reasonable and feasible, etc.

[0059] Use 3D modeling software to create a BIM model of the key control project of the highway, and then use professional analysis software to conduct a comprehensive performance evaluation of factors such as the granularity of the model. Then establish a corresponding 3D construction model, and then conduct construction organization design on the model, build a reasonable construction process and component movement relationship, and then prepare a detailed construction schedule and formulate an overall construction plan.

[0060] 1.1. Simulation analysis of the rationality of construction phase division

[0061] Use BIM's simple process editing function: quickly divide the construction phases and determine the starting point of each unit project without considering parallel or cross-processes. Ensure that the construction phase division conforms to the actual project logic and does not cause process conflicts.

[0062] Conduct simulation analysis: Check the rationality of the construction section division, confirm whether the construction starting point flow and construction sequence are reasonable and feasible. Verify the logical relationship between each process within the construction stage to ensure the correct construction sequence.

[0063] 1.2. Create BIM models for key highway control projects

[0064] 3D modeling software creates BIM models: Design and create BIM models of key control projects of highways, including key components such as roads, bridges, tunnels, etc. Ensure the precision and accuracy of the model, meet the actual project requirements, discover potential problems in advance and make adjustments, and provide a reliable foundation for the subsequent overall construction plan.

[0065] 1.3. Establish 3D construction model and construction organization design

[0066] Establish a 3D construction model: Establish a corresponding 3D construction model based on the construction requirements, taking into account the actual construction process of the components. Determine the construction site layout, component placement, etc., and display the construction details.

[0067] Conduct construction organization design: design reasonable construction procedures and component movement relationships to ensure smooth construction. Consider factors such as construction team collaboration and safe production, and formulate a detailed construction organization plan.

[0068] 1.4. Prepare a detailed construction schedule

[0069] Develop construction schedule: Prepare a detailed construction schedule based on the 3D construction model and organizational design. Determine the start and end time, process arrangement and key nodes of each construction stage to ensure that the construction progress is controllable.

[0070] 1.5. Formulate an overall implementation plan

[0071] Formulate an overall construction plan: Combine the construction schedule and formulate a comprehensive overall construction plan, including construction team management, resource allocation, risk management, etc., to ensure that the construction progresses smoothly and is completed as planned.

[0072] 2. Construction plan simulation

[0073] To systematically conduct special construction scheme simulation, process simulation and multi-scheme comparison simulation for highway projects, the following steps can be used to refine and organize the relevant simulation work:

[0074] 2.1. Special construction plan simulation

[0075] Task decomposition and information collection: Decompose the construction project, master the detailed design drawings and technical specifications of each construction section, clarify the construction starting point, flow direction and main construction procedures, and form a basic database.

[0076] Preparation of preliminary construction plan: Based on the constraints of each operation, a detailed construction schedule is drawn up for each sub-project and a construction plan is formulated. Possible conflict points of parallel and cross-operation are identified and marked, critical paths are confirmed, and the process with the greatest impact on the total construction period is determined.

[0077] Key process simulation: Focus on the key processes to conduct detailed simulation and evaluate the rationality of their planned execution. In the simulation, the effectiveness of process connection and resource allocation is tested.

[0078] Resource and material planning: Prepare comprehensive resource allocation and material supply plans to ensure uninterrupted progress of the process. Arrange the entry sequence and storage specifications to support the implementation of continuous operations.

[0079] 2.2 Process simulation

[0080] BIM model establishment and deepening: Use BIM technology to build a three-dimensional model of the project, covering shape, size and location information. Through the collaborative deepening of various disciplines, a complete 4D (progress) and 5D (cost) model is formed.

[0081] Construction process simulation drill: Simulate various construction processes in a 3D environment to identify potential construction difficulties in advance. Focus on simulating specific construction contents such as foundations, bridges, and drainage.

[0082] Model adjustment and optimization: Adjust the construction design and process based on the problems found to form a feedback loop. Record the optimized process flow and improve the construction plan documentation.

[0083] Safety and quality control: Set up safety monitoring points during the simulation process to simulate safety risks and their control measures. Add quality monitoring elements to ensure that the process implementation meets the design requirements.

[0084] 2.3. Multi-scheme comparison simulation

[0085] Scheme generation and optimization: Based on site conditions and construction requirements, propose multiple construction schemes (such as the use of different machines, different process arrangements, etc.). Compare the implementation conditions, resource requirements and potential difficulties of each scheme.

[0086] Comprehensive simulation and evaluation: Use software to simulate multiple plans and evaluate the performance of each plan in terms of progress, cost and resource utilization. Use weighted scoring method or hierarchical analysis method to conduct a comprehensive evaluation of each construction plan.

[0087] Best solution implementation selection: Determine the best solution through comprehensive evaluation, analyze its feasibility and risks in implementation. Develop an implementation plan and reserve backup plans for special or unexpected situations.

[0088] 3. Construction plan optimization

[0089] Complete the construction simulation, conduct analysis and demonstration, and after calculating the time parameters of each project task, find out the key routes and key tasks, optimize the key tasks in a targeted manner, adjust the construction schedule, and ensure the construction time of the construction sequence on the key routes without affecting the total construction period. By adjusting the construction time of the construction procedures on non-critical routes, the overall construction plan is optimized to ensure the rationality of the construction sequence, the appropriate connection between the procedures, and the balanced construction rhythm.

[0090] 3.1. Inspection and adjustment of construction sequence: Use 4D construction simulation to identify key routes and key tasks, and optimize key tasks in a targeted manner, so as to optimize the overall construction plan of the highway project and ensure that each construction process and construction rhythm are reasonable.

[0091] 3.2. Inspection and adjustment of construction period: Based on the intuitive display of 4D construction simulation, simulate and inspect the duration of the work and the rationality of the logical relationship, and make adjustments and optimizations.

[0092] 4. On-site tracking and iterative updates

[0093] By defining resource appearance configuration for the 3D information model, the traditional schedule compiled by the schedule department and the 3D model established by the BIM model department are visually combined. Through the early simulation of the model's redivision and processing, the creation of supplementary 3D models or schedules, and the continuous addition of new construction information, such as logistics and transportation, site layout models, etc., the construction simulation animation is exported as the simulation result. In the process of continuous progress of the project and continuous review by management personnel, multiple iterations are carried out to finally export the construction simulation plan and complete the construction simulation.

[0094] 4.1. Establish a BIM site model and plan the construction site layout in advance.

[0095] 4.2. Layout of large lifting and transport machinery: According to the large lifting and transport machinery model and lifting process determined in the plan, 4D simulation of the machinery working process is carried out. Through dynamic simulation of the working range, travel route, etc., the optimal layout position is determined to ensure the working capacity of the crane arm within the range of activity and to ensure that there are no dead angles.

[0096] 4.3. On this basis, conduct 4D construction simulation on the transportation status of material resources, reasonably plan the material storage site, and determine the layout of large sites such as prefabricated beam sites and mixing stations.

[0097] 4.4. According to the construction simulation, determine the time sequence and route of resource entry, reasonably arrange the progress plan and resource entry situation, reduce secondary transportation, and ensure the progress and cost of the project.

[0098] 5. Progress Optimization

[0099] Under the premise of ensuring the total construction period, the supply of labor, materials, machinery, etc. during the construction process is simulated dynamically by 4D to determine the resource allocation needs of the construction site, and the progress is optimized in combination with the actual situation. At the same time, the progress optimization results based on 4D are used to guide the construction to ensure that all work is carried out in an orderly manner. Construction personnel can add various time parameters in the construction process to components, and management personnel can query and track the progress of on-site construction intuitively and quickly through 4D progress. Targetedly optimize key tasks, adjust the construction schedule, continuously optimize the project construction organization plan, reduce redundant links, and improve the rationality, logic and efficiency of the construction sequence.

[0100] In this embodiment, the method of the present invention dynamically simulates the construction process through a software platform, analyzes whether the complex construction process is reasonable, and optimizes the construction plan by simulation. The specific implementation process is:

[0101] 1. Use the BIM modeling software platform to establish a site environment consistent with the construction site, create an information model of construction machinery and equipment, and integrate the key control engineering model of the highway, the site model and the construction machinery and equipment model.

[0102] 2. Based on BIM construction analysis software, construction simulation is carried out according to the processes, methods and machinery formulated in the preliminary plan.

[0103] 3. During the simulation process, if there are construction conflicts such as improper construction procedures, collisions during construction, and unfeasible construction methods, the software will automatically identify and issue an alarm, and can intuitively find out under what circumstances problems have occurred in the key control engineering models of the highway.

[0104] 4. The technical staff will review the problems encountered in the simulation and adjust the solutions to the problems recorded by the system. According to the modified solutions, they will modify the corresponding construction processes and related parameters in the corresponding BIM software and then simulate again. The platform can generate a visual construction plan based on the data of the final simulation results.

[0105] 5. Finally, multiple schemes can be compared visually until the most efficient and feasible optimal construction scheme is determined and handed over to the construction personnel. Through the virtual construction technology based on BIM, the construction organization and scheme can be verified and optimized, and the construction process can be effectively analyzed to see whether the construction process of complex processes is reasonable, so as to reasonably allocate resources such as materials, equipment and personnel, and optimize the construction process. In addition, the parameter control of mechanical equipment is the key in the construction simulation process. Through the 4D dynamic simulation of BIM software, the working range of mechanical equipment and the construction danger area can be simulated intuitively and visually, and the size specifications of mechanical equipment can be intuitively selected. Through construction simulation, not only can the specifications of mechanical equipment be determined, but also whether the spatial position of mechanical equipment during operation, lifting, rotation and other actions is reasonable, and whether the equipment route will collide with the auxiliary construction facilities. During the simulation process, the mechanical equipment is adjusted to the critical state, and the most unfavorable state analysis is carried out to determine the optimal specifications, optimal parking position and optimal route of the construction machinery, so as to improve the utilization efficiency of resources.

[0106] In this embodiment, the highway project route is long, the types of projects involved are many, and the construction organization is difficult and complex. Traditional construction technology means are not applicable, and the application of BIM technology provides new possibilities for simplifying the construction technology process, optimizing the analysis and configuration of construction resources (materials, labor, machinery and equipment). The method of the present invention uses three-dimensional simulation technology to create a BIM three-dimensional construction model of a key control project of a highway. After comprehensive performance evaluation of the model, the model is designed for construction organization, a reasonable construction process and component motion relationship are constructed, and a 4D visual dynamic simulation of the entire construction process is realized. In the 4D dynamic virtual construction based on BIM, the supply of labor, materials, machinery, etc. is comprehensively considered to determine the resource allocation requirements of the construction site, and the progress is optimized in combination with the actual situation. On-site personnel can query and track the progress of on-site construction intuitively and quickly through the 4D progress. Targeted optimization of key tasks, adjustment of construction schedules, continuous formulation and optimization of engineering construction organization plans, reduction of redundant links, and improvement of the rationality, logic and efficiency of the construction sequence.

[0107] By adopting the above technical solution disclosed in the present invention, the following beneficial effects are obtained:

[0108] The present invention provides a digital construction organization 4D simulation method, which uses BIM virtual construction technology to simulate the entire construction process, allowing team technicians to be familiar with the construction process and construction process technical process before construction, and improving the refined management level of highway construction skills. The present invention uses BIM's 4D related database, and the virtual construction technology can quickly and accurately obtain the basic data volume in the process, provide timely and accurate data support for the formulation of the project construction plan, and also provide data support for cost management and control. The present invention is based on BIM's 4D dynamic virtual construction, optimizes the construction organization, and reflects the construction difficulties in advance. On the basis of animation rendering, the visual display of the construction process is realized. With the effective display of BIM virtual construction technology, the complex space standard design can be displayed more intuitively, which is convenient for construction technicians to understand and use, and also effectively avoids the construction errors and other problems caused by the understanding deviation of construction technicians in the process of viewing drawings, etc., and reduces the errors in highway engineering construction.

[0109] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A digital construction organization 4D simulation method, characterized by: The following steps are included: S1. Establishment of overall implementation group: Based on the simulation and analysis capabilities of BIM's digital technology, the construction phases can be quickly divided before the construction schedule is compiled, and the starting point location of each unit project and the reasonable construction sequence can be determined; the BIM model of the key control project of the expressway is created with 3D modeling software, and the elements of the model are comprehensively evaluated using professional analysis software, and the corresponding 3D construction model is established. The model is then used for construction organization design, and a reasonable construction process and component movement relationship are constructed, and a detailed construction schedule is compiled to formulate an overall construction plan; S2. Construction plan simulation: Systematically conduct simulation of special construction plans, process simulation and multi-plan comparison simulation for highway projects; S3. Construction plan optimization: Complete construction simulation, conduct analysis and demonstration, and after calculating the time parameters of each project task, find out the key routes and key tasks, optimize the key tasks in a targeted manner, adjust the construction schedule, and ensure the construction time of the construction sequence on the key routes without affecting the total construction period. By adjusting the construction time of the construction process on the non-critical routes, the overall construction plan is optimized to ensure the rationality of the construction sequence, the appropriate connection between the processes, and the balanced construction rhythm; S4, on-site tracking and iterative updates: By defining resource appearance configuration for the 3D information model, the traditional schedule compiled by the schedule department and the 3D model established by the BIM model department are visually combined. Through the early simulation of the model, the model is re-divided and processed, and a supplementary 3D model or schedule is created, and new construction information is continuously added. In the process of continuous progress of the project and continuous review by management personnel, multiple iterations are carried out to finally derive the construction simulation plan and complete the construction simulation; S5. Progress optimization: Under the premise of ensuring the total construction period, the supply of labor, materials and machinery during the construction process is dynamically simulated through 4D to determine the resource allocation needs of the construction site, and the progress is optimized based on the actual situation.

2. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S1 specifically includes the following contents: S11. Simulate and analyze the rationality of construction phase division; S12. Design and create BIM models for key control projects of expressways, ensure the precision and accuracy of BIM models, meet actual project requirements, discover potential problems in advance and make adjustments, and provide a reliable foundation for subsequent overall implementation plans; S13. Establish a three-dimensional construction model and construction organization design; S14. Develop a construction schedule: Prepare a detailed construction schedule based on the 3D construction model and organizational design; determine the start and end time, process arrangement and key nodes of each construction phase to ensure that the construction progress is controllable; S15. In conjunction with the construction schedule, formulate a comprehensive overall construction plan to ensure that the construction progresses smoothly and is completed as planned.

3. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S11 includes, Use BIM's simple process editing function to quickly divide the construction phases and determine the starting point of each unit project without considering parallel or cross-processes, ensuring that the construction phase division conforms to the actual project logic and does not cause process conflicts; Check the rationality of the division of construction stages, confirm whether the construction starting point flow and construction sequence are reasonable and feasible, verify the logical relationship between each process within the construction stage, and ensure the correct construction sequence.

4. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S13 includes, According to the construction requirements, the corresponding 3D construction model is established, the actual construction process of the components is considered, the construction site layout and component placement are determined, and the construction details are displayed; Design reasonable construction procedures and component movement relationships to ensure smooth construction process; consider construction team collaboration and safe production, and formulate a detailed construction organization plan.

5. The digital construction organization 4D simulation method according to claim 1 is characterized by: The special construction plan simulation includes: Decompose the construction project, master the detailed design drawings and technical specifications of each construction section; clarify the construction starting point, flow direction and main construction procedures, and form a basic database; Based on the constraints of each operation, a detailed construction schedule is drawn up for each sub-project and a construction plan is formulated; possible conflict points between parallel and cross operations are identified and marked, critical paths are confirmed, and the process with the greatest impact on the total construction period is determined; Focus on detailed simulation of key processes to evaluate the rationality of their planned execution; test the effectiveness of process connection and resource allocation in simulation; Prepare comprehensive resource allocation and material supply plans to ensure uninterrupted progress of the process; arrange the entry sequence and storage specifications to support the implementation of continuous operations.

6. The digital construction organization 4D simulation method according to claim 1 is characterized by: The process simulation includes, Use BIM technology to build a three-dimensional model of the project, including shape, size and location information; Through the collaborative design of various disciplines, a complete 4D schedule model and 5D cost model are formed; Simulate various construction processes in a 3D environment to identify potential construction difficulties in advance; focus on simulating specific construction contents of foundations, bridges, and drainage; Adjust construction design and process based on discovered problems to form a closed feedback loop; record optimized process flow and improve construction plan documentation; During the simulation process, safety monitoring points are set up to simulate safety risks and their control measures, and quality monitoring elements are added to ensure that the process implementation meets the design requirements.

7. The digital construction organization 4D simulation method according to claim 1 is characterized by: The multi-scheme comparison simulation includes: Propose multiple construction plans based on site conditions and construction requirements, and compare the implementation conditions, resource requirements and potential difficulties of each plan; Use software to simulate multiple options and evaluate the performance of each option in terms of schedule, cost and resource utilization; use weighted scoring method and / or hierarchical analysis method to conduct a comprehensive evaluation of each construction option; Determine the best construction plan through comprehensive evaluation, analyze its feasibility and risks in implementation, specify an implementation plan, and reserve backup plans for special or emergency situations.

8. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S3 specifically includes the following contents: S31. Use 4D construction simulation to identify key routes and key tasks, and optimize key tasks in a targeted manner, so as to optimize the overall construction plan of the highway project and ensure that each construction process and construction rhythm are reasonable; S32. Based on the intuitive display of 4D construction simulation, simulate the duration of the inspection work and the rationality of the logical relationship, and make adjustments and optimizations.

9. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S4 specifically includes the following contents: S41. Establish a BIM site model and plan the construction site layout in advance; S42. According to the large-scale lifting and transportation machinery model and lifting process determined in the plan, 4D simulation of the machinery working process is carried out; through dynamic simulation of the working range and travel route, the optimal layout position is determined to ensure the working capacity of the crane arm within the range of activity and to ensure that there are no blind spots; S43. On this basis, conduct 4D construction simulation on the transportation status of material resources, reasonably plan the material storage site, and determine the layout of the large site; S44. According to the construction simulation, determine the time sequence and route of resources approaching the site, reasonably arrange the progress plan and resource entry, reduce secondary transportation, and ensure the progress and cost of the project.

10. The digital construction organization 4D simulation method according to claim 1 is characterized by: Step S5 also includes, The progress optimization results based on 4D are used to guide construction and ensure that all work is carried out in an orderly manner. Construction personnel can add various time parameters for components during the construction process. Management personnel can use 4D progress to intuitively and quickly query and track the progress of on-site construction, optimize key tasks in a targeted manner, adjust the construction schedule, continuously optimize the project construction organization plan, reduce redundant links, and improve the rationality, logic and efficiency of the construction sequence.

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