Dynamic simulation analysis method for the whole life cycle of high arch dam construction based on BIM visualization

Abstract

The present invention discloses a dynamic simulation analysis method for the whole life cycle of high arch dam construction based on BIM visualization technology, which mainly includes: 1) establishing a BIM system with unified construction information and simulation information of high arch dam; 2) updating parameters in the simulation system according to the completed construction information, updating the construction simulation progress, generating a progress plan, optimizing the construction plan, and generating a visualization model of the re-predicted construction plan in the BIM system; 3) construction progress control: during the construction of phased projects, the BIM system is used to monitor the construction parameters in real time and compare them with the scheduled construction period; 4) after the phased project is completed, the BIM system is used to quickly generate a three-dimensional image of the results and update the predicted value. The present invention can effectively control the construction progress, supervise the construction quality, and ensure the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the field of high arch dam body casting construction, and specifically to a full life cycle dynamic simulation analysis method for high arch dam construction based on BIM (Building Information Model) visualization technology. Background Art

[0002] The construction of high arch dams plays an important role in the construction of water conservancy and hydropower projects. Its construction quality and speed directly affect the safety and construction period of the project. Since the construction process of high arch earth dams is affected by many factors such as natural environment, structural form, process technology, organizational mode, casting machinery and building materials, the planning, progress control and resource optimization allocation are very complicated; at the same time, the construction time span of high arch dams is large and the pouring intensity is high during the peak period. During the pouring construction process, it is also necessary to consider the phased target requirements such as diversion, flood control, dam body water retaining and water storage power generation, which brings considerable difficulties and potential risks to the construction organization, planning and progress control. In actual water conservancy and hydropower projects, in order to pursue the benefits of early power generation, it is often required to speed up the dam construction process and shorten the construction period. Therefore, real-time simulation analysis of the construction process of high arch dams is of great significance to ensure the construction period and construction quality.

[0003] At present, there are still many shortcomings in the high arch dam construction simulation analysis technology: First, the simulation process and results of the system are not intuitive enough, the simulation process is not interactive enough, and it is not easy to be accepted by engineering and technical personnel. Faced with the cumbersome system operation interface and complex simulation result data, engineering personnel often do not know where to start, so the system cannot be well utilized; Second, BIM is only used as a three-dimensional model in many cases, and the application of BIM information expression is not sufficient. The BIM coding method of water conservancy and hydropower projects is not standardized to a high degree, which makes it difficult to connect and share information between various systems of water conservancy project construction simulation control; Third, the expression form of the high arch dam construction simulation analysis process is relatively simple, mainly expressed in the form of tables and charts, which cannot intuitively show the advantages and disadvantages of the construction plan and the real-time construction deviation; Fourth, the construction simulation analysis is mostly a one-way study, with less comparison and feedback on the actual construction situation, and the expression form is not intuitive enough. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention provides a dynamic simulation analysis method for the entire life cycle of high arch dam construction based on BIM visualization technology, so as to realize the analysis and control of the entire process of dam pouring construction by using BIM system and construction simulation technology, so as to ensure the quality of dam pouring and on-time completion.

[0005] In order to solve the above technical problems, the present invention proposes a dynamic simulation analysis method for the whole life cycle of high arch dam construction based on BIM visualization, which mainly includes: establishing high arch dam casting BIM, construction simulation analysis based on BIM data and realizing construction progress control; the contents are as follows

[0006] Step 1: Establish high arch dam casting BIM, including:

[0007] 1-1) Establish a three-dimensional model of the dam based on the design data and divide it into different dam sections; divide the dam sections into different dam blocks based on actual construction requirements and simulation plans; divide the joint grouting areas based on the design data;

[0008] 1-2) Number the divided dam blocks and grouting areas according to the following numbering rules:

[0009] Dam block number: DB-BDXX-BKXX-XXXXEL-XX, dam-section number-dam block number-starting elevation-dam block height;

[0010] Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, where each segment of characters represents: joint-grouting area number-grouting joint number-starting elevation-grouting area height;

[0011] 1-3) The dam construction information is collected in real time through the real-time monitoring system of the high arch dam construction process. The dam construction information includes construction progress information, construction resource allocation and pouring information. The construction progress information includes dam block pouring data and grouting progress data. The construction resource allocation includes cable crane operation process data. The above information is coded. The coding rule is: Target-Object-Attribute-Time-Value-Unit, where each segment of characters represents: construction object-observation object-observation attribute-observation time-observation value and unit in sequence;

[0012] 1-4) determining the data interface between the three-dimensional model of the dam established in step 1-1) and the dam construction information, and integrating the dam construction data obtained in step 1-3) with the three-dimensional model using the construction object as the connection, and constructing a high arch dam casting BIM with a unified data structure of the three-dimensional model, the simulation information obtained by using the high arch dam construction dynamic simulation system, and the dam construction information obtained by using the high arch dam construction process real-time monitoring system;

[0013] Step 2: Construction simulation analysis based on BIM data, including:

[0014] 2-1) Based on the high arch dam casting BIM established in step 1, determine the data interface between the high arch dam construction dynamic simulation system and the high arch dam construction process real-time monitoring system, and the high arch dam casting BIM obtains dam construction information;

[0015] 2-2) The high arch dam construction dynamic simulation system statistically analyzes the dam construction information to obtain construction parameter data; adopts the Bayesian update method to respectively calculate the prior probability and likelihood function of the construction parameter data, and then calculates the posterior probability to obtain the updated simulation construction parameter data, so as to realize the real-time update of the construction parameters of the high arch dam construction dynamic simulation system;

[0016] 2-3) Based on the simulated construction parameter data updated in real time in step 2-2), the high arch dam construction dynamic simulation system is used to perform simulation analysis and calculation, thereby establishing a high arch dam construction schedule plan, and at the same time, the joint grouting period, grouting area height, maximum cantilever height, orifice part layering plan, casting layer thickness, and number of cable cranes of the plan are optimized and analyzed, and the simulation analysis result is obtained, which is the simulation information;

[0017] 2-4) storing the simulation analysis results obtained in step 2-3) into a simulation information database, and updating the high arch dam casting BIM data according to the simulation information in the simulation database;

[0018] Step 3: Construction progress control, including:

[0019] 3-1) comparing the construction progress information in the dam construction information collected in real time in step 1-3) with the construction progress information of the original construction plan, and evaluating the impact of the progress deviation on the construction period based on the simulation analysis results of step 2-3);

[0020] 3-2) According to the evaluation results of step 3-1), dynamic adjustment and optimization simulation are performed on the construction progress deviation to generate an adjustment plan and progress plan for the next stage of construction.

[0021] Furthermore, in step 1 of the present invention, the established three-dimensional model of the high arch dam, the construction information, and the simulation information adopt a unified coding method, and the coding rules include:

[0022] Dam block number: DB-BDXX-BKXX-XXXXEL-XX, expressed as: dam-section number-dam block number-starting elevation-dam block height;

[0023] Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, expressed as: joint-grouting area number-grouting joint number-starting elevation-grouting area height;

[0024] Construction information coding: Target-Object-Attribute-Time-Value-Unit, expressed as: construction object-observation object-observation attribute-observation time-observation value-unit;

[0025] The construction simulation information is coded as: Target-Object-Attribute-Time-Value-Unit, which is expressed as: construction object-observation object-observation attribute-observation time-observation value-unit.

[0026] In the step 1-3), the dam construction information is divided into progress and parameter categories, and the coding rules mentioned in the step 1-3) are used for coding, including:

[0027] Progress category: dam section number - start time - end time - volume - cableway number;

[0028] Grouting area number - start time - end time - area;

[0029] Parameter category: machine number-parameter type-distribution type-parameter mean-parameter variance-unit.

[0030] The specific contents of step 3-1) include: arranging the dam construction information and the simulation information into a panel for comparative analysis, using the forward line method to track the dam pouring progress, and determining the forward point using the remaining time method, the process is as follows: using the expected remaining construction period obtained by simulation calculation, with the end point in the bar chart of the original planned construction period, reversely determine the forward point according to the length of the expected remaining construction period; if the point falls on the left side of the check line, it means that the accumulated progress to the current moment lags behind the planned progress; on the contrary, if the progress is ahead of schedule, if the point falls on the check line, it means that the actual progress is consistent with the plan; if the deadline of the expected construction period needs to be further determined, move the forward point to the check line, and draw a bar chart forward with the expected remaining construction period obtained by simulation, and the end point corresponds to the expected completion time of the dam construction; visualize the comparative analysis results in BIM, and use different colors to mark the parts with progress delays and the parts that need to be adjusted and optimized.

[0031] Step 3-2) is as follows: Several optimization schemes are preliminarily formulated according to the design requirements. The construction simulation system simulates the pouring process and progress of different construction schemes, analyzes the influence of construction parameters in different construction schemes and simulation information on the construction progress, selects the optimal scheme, and integrates the optimal scheme with the three-dimensional model again.

[0032] Furthermore, in the present invention, in order to achieve a more realistic BIM model and real-time animation, the dam construction data is converted according to a unified IFC standard format, non-structured data is converted into structured data, and connected to the BIM database to achieve the fusion of dam construction information and dam three-dimensional model, and the IFC attribute extension mechanism is used to animate the real-time dynamics of the construction, and then Open GL technology is used for rendering to achieve a more realistic BIM model and real-time animation.

[0033] Through the open database interconnection (ODBC) technology, the C# language is used to develop a unified data interface for data standards, model production, coding specifications, and interaction standards, and the dam construction information database, simulation information database, and BIM database are interconnected to achieve centralized management of operation data and data sharing.

[0034] In step 3-1), the high arch dam casting BIM will visualize the updated optimized simulation data results, and at the same time compare the simulation data results with the construction conditions corresponding to the dam construction information, providing a basis for construction deviation analysis and optimization, and realizing bidirectional coupling data analysis of construction simulation and BIM.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) It solves the problems of single simulation analysis method, low information level and low efficiency in traditional high arch dam construction;

[0037] (2) A unified BIM coding method for high arch dam construction simulation analysis was proposed, which enabled the interconnection and data sharing of the construction simulation system, real-time construction monitoring system, and BIM model;

[0038] (2) Utilizing 3D visualization technology, database technology, BIM technology, and construction simulation technology, we have achieved integrated management of massive, multi-source data, automatic statistics and analysis of data, and improved the efficiency of construction simulation analysis;

[0039] (3) The entire process of pouring, from before pouring to during pouring to after pouring is analyzed, breaking through the limitation of only analyzing the pouring results after pouring is completed, and better controlling the quality of pouring construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is the overall flow chart of the present invention;

[0041] Figure 2 It is a construction dynamic simulation flow chart;

[0042] Figure 3 It is a flow chart of schedule deviation impact analysis. DETAILED DESCRIPTION

[0043] The present invention proposes a method for dynamic simulation analysis of the whole life cycle of high arch dam construction based on BIM visualization technology. The design idea is: first, establish a BIM system that unifies the construction information and simulation information of the high arch dam; then, according to the completed construction information, update the parameters in the simulation system, update the construction simulation progress, generate a progress plan, optimize the construction plan, and generate a visualization model of the re-predicted construction plan in the BIM system; during the construction of the phased project, use the BIM system to monitor the construction parameters in real time and compare them with the scheduled construction period, so as to realize the construction progress control; after the phased project is completed, use the BIM system to quickly generate a three-dimensional image of the results and update the predicted value. The present invention can effectively control the construction progress, supervise the construction quality, and ensure the construction efficiency.

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0045] like Figure 1 As shown, the present invention proposes a dynamic simulation analysis method for the whole life cycle of high arch dam construction based on BIM visualization. The method mainly includes: performing parametric modeling according to the initial construction design information of the high arch dam, collecting dam construction information by using the real-time monitoring system of the high arch dam construction process, simulating by using the high arch dam construction dynamic simulation system, uploading the data of the above two systems to the corresponding database, and using Unity 3D visualization technology to visualize the whole construction scene. The specific steps are as follows:

[0046] 1) Establishment of high arch dam casting BIM model:

[0047] 1-1) Build a three-dimensional model of the dam based on the design data and divide it into different dam sections; divide the dam sections into different dam blocks based on the actual construction requirements and simulation plan; divide the joint grouting area based on the design data.

[0048] According to the initial design requirements, when dividing the dam blocks, the general dam blocks are 3m high, and the dam blocks near the bottom and the installation of metal joints are generally 1m high. According to the simulation requirements, each dam block is divided into 0.1m dam block layers.

[0049] 1-2) Number the dam blocks and grouting areas according to the following numbering rules:

[0050] Dam block number: DB-BDXX-BKXX-XXXXEL-XX, expressed as: dam-section number-dam block number-starting elevation-dam block height;

[0051] Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, expressed as: joint-grouting area number-grouting joint number-starting elevation-grouting area height.

[0052] 1-3) The real-time monitoring system of the high arch dam construction process is used to perceive the dam construction data in real time, including construction progress information (including dam block pouring data and grouting progress data), construction resource allocation (including cable crane operation process data) and pouring information. The above information establishes relevant coding rules:

[0053] Target-Object-Attribute-Time-Value-Unit, expressed as: construction object-observation object-observation attribute-observation time-observation value-unit.

[0054] The monitoring equipment of the real-time monitoring system includes drones, displacement sensors, three-dimensional laser scanners, and equipment with photo and video recording functions. At the same time, the collected data is transmitted back in real time through automatic entry methods, and the information is counted in the corresponding table.

[0055] 1-4) Develop an interface between the 3D model and the dam construction data, use the construction object as the connection, integrate the construction process data with the dam 3D model, and build a BIM system that unifies the 3D model with simulation information and construction information.

[0056] 2) Construction simulation analysis based on BIM data, construction dynamic simulation process such as Figure 2 As shown: the simulation starts, the simulation parameters and status are initialized, and it is determined whether the dam casting block has been cast. If not, the casting machine is selected, the dam casting block is selected, the pouring start time and pouring duration are determined, and then the system parameters and status are refreshed for the next cycle; if the pouring is completed, statistical analysis and results output are performed, the simulation ends, and the simulation analysis result data is transferred to the database for BIM model call, and then enters the next cycle. The specific process of construction simulation analysis based on BIM data is as follows:

[0057] 2-1) Based on the BIM system, develop a data interface between the high arch dam construction dynamic simulation system and the real-time construction monitoring system to obtain construction process data.

[0058] 2-2) The simulation system statistically analyzes the actual construction data to obtain construction parameter data. The Bayesian update method is used to calculate the prior probability and likelihood function of the construction parameters, and then the posterior probability is calculated to obtain the updated construction parameters, thus realizing the real-time update of the high arch dam simulation construction parameters.

[0059] 2-3) Based on the simulation construction parameters updated in real time in step 2-2), simulation analysis and calculation are performed to establish a high arch dam construction schedule. At the same time, the joint grouting period, grouting area height, maximum cantilever height, orifice location stratification scheme, casting layer thickness, and number of cable cranes of the scheme are optimized and analyzed.

[0060] 2-4) The simulation analysis results in step 2-3) are returned to the simulation database, and the BIM model is updated accordingly according to the simulation information in the simulation database.

[0061] 3) Construction progress control:

[0062] 3-1) Based on the real-time construction information collected in step 1-3), compare it with the originally planned construction progress, and evaluate the impact of progress deviation on the construction period based on the simulation results of step 2-3).

[0063] c. The size and location of the progress deviation are different, and the impact on the later progress is different. The impact analysis of progress deviation is as follows: Figure 3 As shown, after a progress deviation occurs in a certain work, determine whether it is on the critical path. If it is on the critical path, it will affect the total construction period, and it is necessary to conduct real-time progress prediction and analysis, take progress adjustment measures, and return the adjustment measures to the control system; if it is not on the critical path, proceed to the next step; determine whether it is greater than the total time difference. If it is greater than the total time difference, it will affect the total construction period, and it is necessary to conduct real-time progress prediction and analysis, take progress adjustment measures, and return the adjustment measures to the control system; if it is not greater than the total time difference, proceed to the next step; determine whether it is greater than the free time difference. If it is greater than the free time difference, it will affect the subsequent work, and it is necessary to conduct real-time progress prediction and analysis, take progress adjustment measures, and return the adjustment measures to the control system; if it is not greater than the free time difference, it will not affect the subsequent work and directly return to the progress control system.

[0064] 3-2) Based on the evaluation of the construction progress deviation in step 3-1), dynamic adjustment and optimization simulation are performed to generate the best adjustment plan and progress plan for the next stage of construction.

[0065] In step 1) of the present invention, the established three-dimensional model of the high arch dam, the construction information, and the simulation information adopt a unified coding method, and the coding rules are:

[0066] Dam block number: DB-BDXX-BKXX-XXXXEL-XX, expressed as: dam-section number-dam block number-starting elevation-dam block height;

[0067] Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, expressed as: joint-grouting area number-grouting joint number-starting elevation-grouting area height;

[0068] Construction information coding: Target-Object-Attribute-Time-Value-Unit, expressed as: construction object-observation object-observation attribute-observation time-observation value-unit;

[0069] The construction simulation information is coded as: Target-Object-Attribute-Time-Value-Unit, which is expressed as: construction object-observation object-observation attribute-observation time-observation value-unit.

[0070] The construction information in step 1-3) of the present invention can be divided into progress category and parameter category. Using the encoding method mentioned in step 1-3), it can be encoded as:

[0071] Progress Class:

[0072] Dam section number-start time-end time-volume-cable crane number

[0073] Grouting area number-start time-end time-area

[0074] Parameter class:

[0075] Machine number - parameter type - distribution type - parameter mean - parameter variance - unit.

[0076] Construction simulation information is similar to construction information.

[0077] In steps 1-4) of the present invention, the dam construction data is converted according to a unified IFC standard format, non-structured data is converted into structured data, and connected to a BIM support database to achieve fusion of construction process data and a dam three-dimensional model, an IFC attribute extension mechanism is used to animate the real-time dynamics of the construction, and Open GL technology is used to render the construction animation, thereby achieving a more realistic BIM model and real-time animation.

[0078] In steps 1-4) and 2-1) described in the present invention, through the open database interconnection (ODBC) technology, the C# language is used to develop a unified data interface for data standards, model making, coding specifications, and interaction standards, and the construction database, simulation database, and BIM support database are interconnected to achieve centralized management of operation data and data sharing.

[0079] In step 2-4) of the present invention, the BIM model visualizes the updated and optimized simulation scheme and compares it with the actual construction situation, providing a basis for construction deviation analysis and optimization, and realizing bidirectional coupling data analysis of construction simulation and BIM model.

[0080] In step 3-1) of the present invention, the actual progress information and the simulation plan information are organized into a panel for comparative analysis, and the forward line method is used to track the dam pouring progress. The forward point is determined by the remaining time method. The specific process is: using the expected remaining construction period obtained by simulation calculation, the end point in the bar chart of the original planned construction period, and the forward point is reversely determined according to the time length of the expected remaining construction period. If the point falls on the left side of the check line, it means that the progress accumulated to the current moment is behind the planned progress; on the contrary, the progress is ahead of schedule. If the point falls on the check line, it means that the actual progress is consistent with the plan; if the deadline of the expected construction period needs to be further determined, the forward point can be moved to the check line, and the bar chart can be drawn forward with the expected remaining construction period obtained by simulation. The corresponding time of the end point is the expected completion time of the dam construction. The comparative analysis results are visualized in the BIM model, and different colors are used to mark the delayed parts and the parts that need to be adjusted and optimized.

[0081] In step 3-2) described in the present invention, the method for scheme optimization is to preliminarily formulate several optimization schemes according to the design requirements, the construction simulation system simulates the pouring process and progress of different construction schemes, analyzes the influence of different construction schemes and key parameters on the construction progress, selects the optimal scheme, and re-associates the adjusted optimal scheme with the model.

[0082] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many modifications without departing from the purpose of the present invention, all of which are within the protection of the present invention.

Claims

1. A dynamic simulation analysis method for the entire life cycle of high arch dam construction based on BIM visualization, characterized in that: The following steps are involved: Step 1: Establish high arch dam casting BIM, including: 1-1) Establish a three-dimensional model of the dam based on the design data and divide it into different dam sections; divide the dam sections into different dam blocks based on actual construction requirements and simulation plans; divide the joint grouting areas based on the design data; 1-2) Number the divided dam blocks and grouting areas according to the following numbering rules: Dam block number: DB-BDXX-BKXX-XXXXEL-XX, dam-section number-dam block number-starting elevation-dam block height; Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, where each segment of characters represents: joint-grouting area number-grouting joint number-starting elevation-grouting area height; 1-3) The dam construction information is collected in real time through the real-time monitoring system of the high arch dam construction process. The dam construction information includes construction progress information, construction resource allocation and pouring information. The construction progress information includes dam block pouring data and grouting progress data. The construction resource allocation includes cable crane operation process data. The above information is coded. The coding rule is: Target-Object-Attribute-Time-Value-Unit, where each segment of characters represents: construction object-observation object-observation attribute-observation time-observation value and unit in sequence; 1-4) determining the data interface between the three-dimensional model of the dam established in step 1-1) and the dam construction information, and integrating the dam construction data obtained in step 1-3) with the three-dimensional model using the construction object as the connection, and constructing a high arch dam casting BIM with a unified data structure of the three-dimensional model, the simulation information obtained by using the high arch dam construction dynamic simulation system, and the dam construction information obtained by using the high arch dam construction process real-time monitoring system; Step 2: Construction simulation analysis based on BIM data, including: 2-1) Based on the high arch dam casting BIM established in step 1, determine the data interface between the high arch dam construction dynamic simulation system and the high arch dam construction process real-time monitoring system, and the high arch dam casting BIM obtains dam construction information; 2-2) The high arch dam construction dynamic simulation system statistically analyzes the dam construction information to obtain construction parameter data; adopts the Bayesian update method to respectively calculate the prior probability and likelihood function of the construction parameter data, and then calculates the posterior probability to obtain the updated simulation construction parameter data, so as to realize the real-time update of the construction parameters of the high arch dam construction dynamic simulation system; 2-3) Based on the simulated construction parameter data updated in real time in step 2-2), the high arch dam construction dynamic simulation system is used to perform simulation analysis and calculation, thereby establishing a high arch dam construction schedule plan, and at the same time, the joint grouting period, grouting area height, maximum cantilever height, orifice part layering plan, casting layer thickness, and number of cable cranes of the plan are optimized and analyzed, and the simulation analysis result is obtained, which is the simulation information; 2-4) storing the simulation analysis results obtained in step 2-3) into a simulation information database, and updating the high arch dam casting BIM data according to the simulation information in the simulation database; Step 3: Construction progress control, including: 3-1) comparing the construction progress information in the dam construction information collected in real time in step 1-3) with the construction progress information of the original construction plan, and evaluating the impact of the progress deviation on the construction period based on the simulation analysis results of step 2-3); 3-2) According to the evaluation results of step 3-1), dynamic adjustment and optimization simulation are performed on the construction progress deviation to generate an adjustment plan and progress plan for the next stage of construction.

2. According to claim 1, a dynamic simulation analysis method for the entire life cycle of high arch dam construction based on BIM visualization technology is characterized by: In the steps 1-3), the established high arch dam three-dimensional model, construction information, and simulation information adopt a unified coding method, and the coding rules are: Dam block number: DB-BDXX-BKXX-XXXXEL-XX, expressed as: dam-section number-dam block number-starting elevation-dam block height; Grouting area number: JF-GQXX-GFXX-XXXXEL-XX, expressed as: joint-grouting area number-grouting joint number-starting elevation-grouting area height; Construction information coding: Target-Object-Attribute-Time-Value-Unit, expressed as: construction object-observation object-observation attribute-observation time-observation value-unit; The construction simulation information is coded as: Target-Object-Attribute-Time-Value-Unit, which is expressed as: construction object-observation object-observation attribute-observation time-observation value-unit.

3. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 2 is characterized in that: In the step 1-3), the dam construction information is divided into progress and parameter categories, and the coding rules mentioned in the step 1-3) are used for coding: Progress category: dam section number - start time - end time - volume - cableway number; Grouting area number - start time - end time - area; Parameter category: machine number-parameter type-distribution type-parameter mean-parameter variance-unit.

4. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 1 is characterized in that: The specific contents of step 3-1) include: The dam construction information and simulation information are organized into a panel for comparative analysis. The forward line method is used to track the dam pouring progress. The forward point is determined by the remaining time method. The process is as follows Using the expected remaining construction period calculated by simulation, the forward point is determined in reverse according to the expected remaining construction period length based on the end point in the bar chart of the original planned construction period. If the point falls on the left side of the check line, it means that the accumulated progress to the current moment is behind the planned progress. On the contrary, if the progress is ahead of schedule and the point falls on the check line, it means that the actual progress is consistent with the plan. If the deadline of the expected construction period needs to be further determined, the forward point is moved to the check line, and a bar chart is drawn in the forward direction with the expected remaining construction period obtained by simulation. The end point corresponds to the expected completion time of the dam construction. The comparative analysis results are visualized in BIM, and different colors are used to mark the parts with progress delays and those that need adjustment and optimization.

5. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 1 is characterized in that: Step 3-2) is as follows: Several optimization plans are preliminarily formulated according to the design requirements. The construction simulation system simulates the pouring process and progress of different construction plans, analyzes the impact of different construction plans and construction parameters in the simulation information on the construction progress, selects the optimal plan, and reintegrates the optimal plan with the 3D model.

6. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 1 is characterized in that: The dam construction data is converted according to the unified IFC standard format, and the non-structured data is converted into structured data, which is then connected to the BIM database to achieve the integration of the dam construction information and the dam three-dimensional model. The IFC attribute extension mechanism is used to animate the real-time dynamics of the construction, and then Open GL technology is used for rendering to achieve a more realistic BIM model and real-time animation.

7. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 6 is characterized by: Through the open database interconnection (ODBC) technology, the C# language is used to develop a unified data interface for data standards, model production, coding specifications, and interaction standards, and the dam construction information database, simulation information database, and BIM database are interconnected to achieve centralized management of operation data and data sharing.

8. The method for dynamic simulation analysis of the entire life cycle of high arch dam construction based on BIM visualization technology according to claim 7 is characterized in that: In step 3-1), the high arch dam casting BIM will visualize the updated optimized simulation data results, and at the same time compare the simulation data results with the construction conditions corresponding to the dam construction information, providing a basis for construction deviation analysis and optimization, and realizing bidirectional coupling data analysis of construction simulation and BIM.

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