BIM-based visual overpass support construction progress analysis method and system

Abstract

The invention discloses a BIM-based visual overpass support construction progress analysis method and system. The method comprises the following steps: filling and reporting a plan completion date of a previous dependent process; filling and reporting a plan start date of a later dependent process; calculating a construction window period of the support body according to previous and later dependent processes, and sliding and scaling the whole plan progress on the basis of the construction window period to form a real plan progress; component-level splitting and progress filling are conducted on the overpass supporting body; carrying out BIM three-dimensional modeling and plan arrangement on an overpass support body; visualizing the construction progress of the support body and judging the state of the support body; and delay reason analysis. According to the method, component grade part item division can be rapidly split, real-time refined progress linkage is achieved, information such as hue brightness can be displayed through the BIM three-dimensional model of the supporting body, key path influence points are dynamically recognized, and delay reasons are analyzed.

Description

Technical Field

[0001] The present invention relates to a method and system for analyzing the construction progress of a visualized overpass support based on BIM. Background Art

[0002] With the gradual popularization of BIM technology in the construction of overpass supports, more and more design units, construction units, and construction owners have begun to apply this technology to this type of project.

[0003] The construction progress of traditional overpass supports mainly relies on two-dimensional diagrams such as Gantt charts and the Critical Path Method (CPM) for planning. Progress data is recorded through manual regular on-site inspections, and then compared and analyzed with the plan. This method not only easily results in poor data timeliness and untimely reporting of inspection progress data, leading to lagging data updates, but also has a relatively coarse granularity and low visualization level. Only colors are used to distinguish progress states, and the impact areas caused by delays in components at different support parts cannot be distinguished. For example, components on the critical path should be highlighted. At the same time, since only some component delays are shown on the interface and there is no analysis of the reasons for the delays, it is impossible to carry out further optimization. Summary of the Invention

[0004] The purpose of the present invention is to provide a technical solution for a method and system for analyzing the construction progress of a visualized overpass support based on BIM, which can not only quickly split the component-level sub-project division, improve the real-time progress reporting ability of the mobile terminal, and achieve real-time refined progress linkage, but also display information such as the duration of delays and whether it is on the critical path through the tone brightness of the BIM three-dimensional model of the support, dynamically identify the impact points of the critical path, and at the same time, combined with large model technology, intelligently analyze the reasons for the delays.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: A method for analyzing the construction progress of a visualized overpass support based on BIM, characterized by including the following steps: Step1: Filling in the planned completion date of the previous dependent process: The construction of the overpass support depends on the completion time of its previous process, which will directly determine the start time of the support pouring construction. Its previous processes include, for example, pile foundation drilling; Step2: Filling in the planned start date of the subsequent dependent process: The completion date of the overpass support restricts the planned start time of the subsequent construction processes. The construction completion time will directly restrict the start time of subsequent projects such as the bridge and the bridge deck; Step3: Calculating the construction window period of the support based on the previous and subsequent dependent processes, and sliding and scaling the overall planned progress based on this construction window period to form the real planned progress; Step 4. Component-level disassembly and progress reporting of the overpass support structure: Based on the industry standard database, disassemble the construction project of the overpass support structure into a multi-level tree structure with visualized components, and collect the data of the visualized components of the support structure in real time through the mobile terminal to update the actual progress; Step 5. BIM 3D modeling and plan arrangement of the overpass support structure: Construct a BIM 3D model of the support structure associated with the visualized components of the support structure, and arrange the construction plan by arranging the dependency relationships of the visualized components based on the construction window formed by the preceding and succeeding dependent processes, and dynamically identify the critical path of the support structure construction. The critical path is determined by calculating the maximum construction period of all construction paths, and the construction period of all construction paths is the cumulative value of the planned construction periods of all visualized components in the path; Step 6. Visualization of the support structure construction progress and status determination: First, preset the start construction date of the support structure as a whole according to the completion time of the preceding dependent process (such as pile foundation drilling), then preset the overall construction period window of the support structure according to the planned start time of the succeeding dependent process (such as overpass bridge body construction), and then determine the status of the visualized components according to the actual progress and planned progress of the support structure construction according to the preset rules, and dynamically render the status of the visualized components in the BIM 3D model of the corresponding support structure; Step 7. Analysis of reasons for delays: Integrate and correlate multi-source data, construct an artificial intelligence model for context request input containing multi-dimensional data, output an analysis report on the reasons for delays and display it.

[0006] This method for visualizing the construction progress analysis of the overpass support structure can not only quickly disassemble the component-level sub-division of the support structure, improve the real-time progress reporting ability of the mobile terminal, and achieve real-time refined progress linkage, but also display information such as the length of delay and whether it is a critical path by distinguishing the hue and brightness in the BIM 3D model of the support structure, dynamically identify the impact points of the critical path, and at the same time, combined with large model technology, intelligently analyze the reasons for delays.

[0007] A visualization system for the construction progress analysis of an overpass support structure based on BIM, characterized in that: A process reporting module for restricting the construction periods of the preceding and succeeding dependent processes; A component disassembly and management module for disassembling the construction project of the overpass support structure into a multi-level tree structure with visualized components, collecting the data of the visualized components of the support structure in real time through the mobile terminal, and updating the actual progress; A BIM plan arrangement module for constructing a BIM 3D model of the support structure associated with the visualized components of the support structure, arranging the construction plan by arranging the dependency relationships of the visualized components based on the construction window formed by the preceding and succeeding dependent processes, and dynamically identifying the critical path of the support structure construction; The progress visualization module is used to preset the start construction date of the support body as a whole according to the completion time of the previous dependent process (such as pile foundation drilling), then preset the overall construction period window of the support body construction according to the planned start time of the subsequent dependent process (such as overpass bridge body construction), then determine the status of the image components of the support body according to the actual progress and planned progress of the support body construction according to the preset rules, and dynamically render the status of the image components in the BIM three-dimensional model of the corresponding support body; The analysis module integrates and correlates multi-source data, constructs an artificial intelligence model for context request input containing multi-dimensional data, outputs an analysis report on the reasons for delays and displays it.

[0008] The analysis system has a simple structure. It can not only quickly split the component-level sub-project division, improve the real-time progress reporting ability of the mobile terminal, realize real-time refined progress linkage, but also display information such as delay duration and whether it is a critical path by distinguishing the hue and lightness in the BIM three-dimensional model of the support body, dynamically identify the influence points of the critical path, and at the same time combine the large model technology to intelligently analyze the reasons for delays.

[0009] Due to the adoption of the above technical solutions, the present invention has the following beneficial effects: The present invention can not only quickly split the component-level sub-project division, improve the real-time progress reporting ability of the mobile terminal, realize real-time refined progress linkage, but also display information such as delay duration and whether it is a critical path by distinguishing the hue and lightness in the BIM three-dimensional model of the support body, dynamically identify the influence points of the critical path, and at the same time combine the large model technology to intelligently analyze the reasons for delays. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the drawings: Figure 1 It is a flow chart of progress analysis in a visualization overpass support body construction progress analysis method and system based on BIM according to the present invention; Figure 2 It is a schematic diagram of quickly splitting the sub-projects of the support body construction project according to the present invention; Figure 3 It is a schematic diagram of batch numbering of image components of the bored cast-in-place pile component with the sub-project being the support body according to the present invention; Figure 4 It is a schematic diagram of batch numbering of image components with the sub-project being the bearing platform according to the present invention; Figure 5 It is a construction plan grid diagram when identifying the critical path according to the present invention; Figure 6 It is a flow chart of analyzing the reasons for delays according to the present invention; Figure 7 It is a system block diagram of a visualization overpass support body construction progress analysis system according to the present invention. Specific Embodiments

[0011] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0012] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0013] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0014] As Figure 1 shown, a BIM-based visualization construction progress analysis method for overpass support bodies of the present invention includes the following steps: Step1. Filling in the planned completion date of the previous dependent process: The construction of the overpass support body depends on the completion time of pile foundation drilling, which will directly determine the start time of the support body pouring construction; the start date of the support body construction is formed after the estimated completion time of this process; Step2. Filling in the planned start date of the subsequent dependent process: The completion time of the overpass support body construction will directly restrict the start time of the subsequent projects such as the later bridge and bridge deck. The planned start date of the subsequent dependent process and the completion date of the previous dependent process sandwich each other to form the overall estimated construction period of the overpass support body; Step3. Calculating the construction window period of the support body based on the previous and subsequent dependent processes, and sliding and scaling the overall planned progress based on this construction window period to form the real planned progress, and then promoting the completion of the subsequent steps based on this planned progress.

[0015] Step4. Component-level disassembly and progress filling of the overpass support body: Based on the industry standard database, the construction project of the overpass support body is disassembled into a multi-level tree structure with visualized components, and the visualized component data of the support body is collected in real time through the mobile terminal to update the actual progress; The project is split into a multi-level tree structure, specifically including splitting into unit projects, sub-projects, sub-items, and image components. Since the scale of each project is different, the image components are numbered by the user's custom definition, while the unit projects, sub-projects, and sub-items follow unified industry specifications. Using such a splitting method can not only improve efficiency but also be less error-prone.

[0016] When splitting the project, the first step is as Figure 2 shown. For unit projects to sub-items, such as "Wangmiao Tangqiao", "Road (Wanxing Road)", "Drainage Project (Rainwater)", "Drainage Project (Sewage)", "Pipe Gallery Project", etc., there are established industry division criteria and naming specifications. Implement these specifications into the system for the users to directly select with one click, effectively reducing this part of the repetitive and cumbersome maintenance work. The information storage structure for this part is shown in Table 1, which stores each type of unit project.

[0017] Table 1 .

[0018] The second step is to provide a parametric numbering generation rule for the image components under the sub-items.

[0019] For example, Figure 3 when there are multiple image components arranged under the sub-item "Bored Cast-in-Place Pile", numbered from P0-1, P0-2,..., P8-8, abstract the numbering rule as P{x}-{y}, where x is an integer from 0 to 8 and y is an integer from 1 to 8. Based on the given numbering format rule and the parameter ranges of x / y, automatically generate the numbers of multiple image components under the sub-item.

[0020] For example, Figure 4 as shown, for the image components under the sub-item "Cap", it can be abstracted as P{x}{y}, where x is an integer between 1 and 7 and y can take the value of "left" or "right".

[0021] Generate the above two numbering specifications through the parametric numbering generation rule with a string S(x1, x2,..., x n ), generate the Cartesian product through the preset parameter value ranges, and automatically output the set of image component numbers; Automatically batch generate the component numbers according to the preset rule script. The preset generation information is shown in Table 2 Table 2 .

[0022] Step 5. BIM 3D Modeling and Schedule Arrangement of the Overpass Support Structure: Construct a 3D BIM model of the support structure associated with the visualized components. Based on the construction windows formed by the sequential and dependent processes, arrange the dependency relationships of the visualized components to formulate a construction plan, and dynamically identify the critical path of the support structure construction. The critical path is determined by calculating the maximum construction period of all construction paths, and the construction period of all construction paths is the cumulative value of the planned construction periods of all visualized components in the path. Dynamically identifying the critical path of the support structure construction specifically includes: Step 5.1 Model the construction plan of the overpass support structure as a directed acyclic graph, with the nodes being the visualized components and the paths between the nodes being the dependency relationships of the visualized components. Step 5.2 Calculate the cumulative construction periods of all paths and identify the path with the maximum construction period as the critical path.

[0023] As Figure 5 shown, identify the critical path according to the construction plan. Each circle represents a visualized component, w1 to w8 are the names of the visualized components, and the time required for the construction of the component is marked inside the circle. The construction plan diagram at the visualized component level forms a structure of a directed acyclic graph, specifically: L1: "w1\w2\w3\w4\w5", and the construction period required for the L1 path is denoted as cost(L1); L2: "w6\w2\w3\w4\w5", and the construction period required for the L2 path is denoted as cost(L2); L3: "w6\w7\w8\w4\w5", and the construction period required for the L3 path is denoted as cost(L3); cost(L1) = 3 + 4 + 6 + 7 + 4 = 24 (days), cost(L2) = 2 + 4 + 6 + 7 + 4 = 23 (days), cost(L3) = 2 + 3 + 5 + 7 + 4 = 21 (days). Since the L1 path requires the longest construction time, which determines the final completion time, the L1 path is the critical path, and the component nodes of w1\w2\w3\w4\w5 are on the critical path.

[0024] Step 6. Visualization and Status Judgment of the Support Structure Construction Progress: First, overall preset the start construction date of the support structure according to the completion time of the previous dependent process (such as pile foundation drilling), then preset the overall construction period window of the support structure according to the planned start time of the subsequent dependent process (such as overpass bridge body construction), and then judge the status of the visualized components according to the actual progress and planned progress of the support structure construction according to the preset rules, and dynamically render the status of the visualized components in the BIM 3D model of the corresponding support structure. The states of dynamically rendered image components include rendering the colors of image components on the critical path and those on the non-critical path. Within the same color system, the lightness of the color increases linearly with the delay duration.

[0025] When performing analysis based on the BIM three-dimensional model on the page, all components are differentiated by color system and hue for display according to the rules shown in Table 3.

[0026] Table 3 。

[0027] The information in Table 4 is obtained based on the states of the image components and the data reported in the construction plan layout and on-site construction logs.

[0028] Table 4 。

[0029] Based on the information in Table 4, it is possible to determine the state of each component.

[0030] The preset rules specifically include: Completed: The actual completion construction date is not empty; Not Delayed - Under Construction: The following conditions are met simultaneously: The actual start construction date ≤ the planned start construction date, and the current date ≤ the planned completion construction date, and the actual completion construction date is empty; Delaying - Non-Critical Path Node: The following conditions are met simultaneously: The current node is not on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Delaying - Critical Path Node: The following conditions are met simultaneously: The current node is on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Not Yet Started: The following conditions are met simultaneously: The current date > the planned start construction date, and the actual completion construction date is empty.

[0031] Step7, Delay Cause Analysis: As Figure 6 shown, integrate and correlate multi-source data, construct an artificial intelligence model for the context request input containing multi-dimensional data, and output and display a delay cause analysis report.

[0032] As shown in Table 5, the multi-source data includes construction log data, weather data, obstacle source data, and human-machine-material data.

[0033] Table 5 。

[0034] This visualization overpass support construction progress analysis method can not only quickly split the component-level sub - item division, improve the real - time progress reporting ability of the mobile terminal, and achieve real - time refined progress linkage, but also display information such as the hue brightness to distinguish the delay duration and whether it is a critical path through the BIM three - dimensional model of the support, dynamically identify the impact points of the critical path, and at the same time, combined with the large - model technology, intelligently analyze the reasons for delays.

[0035] As Figure 7 shown, a BIM - based visualization overpass support construction progress analysis system of the present invention includes: The process filling module is used for the duration restriction of the previous - dependent process and the subsequent - dependent process; The component splitting and management module is used to split the overpass support construction project into a multi - level tree structure with visualized components, and collect the visualized component data of the support in real - time through the mobile terminal to update the actual progress; The project is split into a multi - level tree structure, specifically including splitting into unit projects, sub - projects, sub - sub - projects, and visualized components; the planned duration of the overpass support construction project is dynamically slid and scaled according to the previous and subsequent dependent processes to form the real planned duration; Provide a parametric numbering generation rule for the visualized components under the sub - sub - project. The parametric numbering generation rule passes through a string S(x1,x2,……,x n ) containing parameter placeholders, generates the Cartesian product through the preset parameter value range, and automatically outputs the visualized component number set; Automatically batch - generate component numbers according to the preset rule script.

[0036] The BIM plan arrangement module is used to construct a BIM three - dimensional model of the support associated with the visualized components of the support, arrange the dependency relationship of the visualized components based on the construction window formed by the previous and subsequent dependent processes, and arrange the construction plan, and dynamically identify the critical path of the support construction; Dynamically identifying the critical path of the support construction specifically includes: Model the construction plan of the overpass support as a directed acyclic graph, where the nodes are visualized components, and the paths between the nodes are the dependency relationships of the visualized components; Calculate the cumulative duration of all paths, and identify the path corresponding to the maximum duration as the critical path.

[0037] According to the actual construction window period formed by the previous and subsequent dependent processes of the overpass support, for each duration of all paths of the support construction, its start time is dynamically slid forward and backward and scaled proportionally to form a new planned progress.

[0038] The progress visualization module is used to preset the start construction date of the support body according to the completion time of the previous dependent process (such as pile foundation drilling), and then preset the overall construction period window of the support body according to the planned start time of the subsequent dependent process (such as overpass bridge body construction). Then, according to the actual progress and planned progress of the support body construction, judge the status of the image components of the support body according to the preset rules, and dynamically render the status of the image components in the BIM three-dimensional model of the corresponding support body.

[0039] The preset rules specifically include: Completed: The actual completion construction date is not empty; Not postponed - Under construction: The actual start construction date ≤ the planned start construction date, and the current date ≤ the planned completion construction date, and the actual completion construction date is empty; Postponing - Non-critical path node: The current node is not on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Postponing - Critical path node: The current node is on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Not yet reached the start time: The current date > the planned start construction date, and the actual completion construction date is empty.

[0040] The analysis module integrates and correlates multi-source data, constructs an artificial intelligence model for context request input containing multi-dimensional data, outputs an analysis report on the reasons for postponement and displays it.

[0041] The analysis system has a simple structure. It can not only quickly split the component-level sub-item division, improve the real-time progress reporting ability of the mobile terminal, and achieve real-time refined progress linkage, but also display information such as the length of postponement and whether it is on the critical path by distinguishing the hue lightness in the BIM three-dimensional model of the support body, dynamically identify the impact points of the critical path, and at the same time, combined with the large model technology, intelligently analyze the reasons for postponement.

[0042] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A construction progress analysis method for the visualization overpass support based on BIM, characterized in that It includes the following steps: Step 1. Filling in the planned completion date of the previous dependent process: The construction of the overpass support depends on the completion date of its previous process; Step 2. Filling in the planned start date of the subsequent dependent process: The completion date of the overpass support restricts the planned start time of the subsequent construction process; Step 3. Calculating the construction window period of the support based on the previous and subsequent dependent processes, and sliding and scaling the overall planned progress based on this construction window period to form the actual planned progress; Step 4. Component-level decomposition and progress filling of the overpass support: Based on the industry standard database, the construction project of the overpass support is decomposed into a multi-level tree structure with visualized components, and the visualized component data of the support is collected in real time through the mobile terminal to update the actual progress; Step 5. BIM 3D modeling and plan arrangement of the overpass support: Construct a BIM 3D model of the support associated with the visualized components of the support, and based on the construction window formed by the previous and subsequent dependent processes, arrange the dependency relationships of the visualized components to compile the construction plan, and dynamically identify the critical path of the support construction. The critical path is determined by calculating the maximum construction period of all construction paths, and the construction period of all construction paths is the cumulative value of the planned construction periods of all visualized components in the path; Step 6. Visualization of the support construction progress and status determination: First, preset the start construction date of the support as a whole according to the completion time of the previous dependent process, then preset the overall construction period window of the support according to the planned start time of the subsequent dependent process, and then determine the status of the visualized components of the support according to the actual progress and planned progress of the support construction according to the preset rules, and dynamically render the status of the visualized components in the BIM 3D model corresponding to the support; Step 7. Analysis of the reasons for delay: Integrate and associate multi-source data, construct an artificial intelligence model for context request input containing multi-dimensional data, output an analysis report on the reasons for delay and display it.

2. The method for analyzing the construction progress of a visualized overpass support based on BIM according to claim 1, wherein: The decomposition of the overpass support construction project into a multi-level tree structure in Step 4 specifically includes decomposition into unit projects, sub-projects, sub-items, and the visualized components; Provide a parametric numbering generation rule for the image components under the sub-project, and the parametric numbering generation rule generates a Cartesian product through a string S(x1, x2, ……, x n ) with parameter placeholders, and automatically outputs the set of numbers of the image components; Automatically generate component numbers in batches according to the preset rule script.

3. The visualization overpass support construction progress analysis method based on BIM according to claim 1, wherein: The specific method for dynamically identifying the critical path of the support construction in Step 5 specifically includes: Step 5.1 Model the construction plan of the overpass support as a directed acyclic graph, with nodes as visualized components and the paths between nodes as the dependency relationships of the visualized components; Step 5.2 Calculate the cumulative construction period of all paths, and identify the path corresponding to the maximum construction period as the critical path.

4. A method for analyzing the construction progress of a visualized overpass support based on BIM according to claim 1, characterized in that: The preset rules in Step 6 specifically include: Completed: The actual completion construction date is not empty; Not delayed - under construction: The actual start construction date ≤ the planned start construction date, and the current date ≤ the planned completion construction date, and the actual completion construction date is empty; Delaying - non-critical path node: The current node is not on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Delayed - Critical Path Node: The current node is on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Not yet started: The current date > the planned start construction date, and the actual completion construction date is empty.

5. The method for analyzing the construction progress of a BIM-based visual overpass support according to claim 1, wherein: The state of the dynamically rendered image components in Step 6 includes rendering the colors of the image components on the critical path and the non - critical path. Within the same color system, the color lightness linearly increases with the delay duration.

6. The visualization overpass support construction progress analysis method based on BIM according to claim 1, characterized in that: The multi - source data in Step 7 includes construction log data, weather data, obstacle source data, and human - machine - material data.

7. A BIM - based visual construction progress analysis system for overpass supports, characterized in that: The process filling module is used for the duration constraint of the previous - dependent process and the subsequent - dependent process; The component splitting and management module is used to split the overpass support construction project into a multi - level tree structure with image components, and collect the image component data of the support in real - time through the mobile terminal to update the actual progress; The BIM plan scheduling module is used to construct a 3D BIM model of the overpass support associated with the image components of the support, and based on the construction window formed by the previous - and subsequent - dependent processes, schedule the dependency relationship of the image components to arrange the construction plan, and dynamically identify the critical path of the overpass support construction; The progress visualization module is used to preset the start construction date of the support as a whole according to the completion time of the previous - dependent process, then preset the overall construction duration window of the support according to the planned start time of the subsequent - dependent process, and then, according to the actual progress and the planned progress of the support construction, determine the state of the image components of the support according to the preset rules, and dynamically render the state of the image components in the 3D BIM model of the corresponding support; The analysis module integrates and correlates multi - source data, constructs an artificial intelligence model for the context request input containing multi - dimensional data, outputs an analysis report on the reasons for delay and displays it.

8. A BIM-based visual overpass support construction progress analysis system according to claim 7, characterized in that: The splitting of the overpass support construction project into a multi - level tree structure specifically includes splitting into unit projects, sub - projects, sub - sub - projects, and the image components; the planned construction period of the overpass support construction project is dynamically slid and scaled according to the previous - and subsequent - dependent processes to form the actual planned construction period; Provide a parametric numbering generation rule for the visualized component under the sub-project. The parametric numbering generation rule passes through a string S(x1, x2, ……, x n ), generates a Cartesian product through a preset parameter value range, and automatically outputs the set of numbers of the visualized components; Automatically generate component numbers in batches according to the preset rule script.

9. The visualization overpass support construction progress analysis system based on BIM according to claim 7, wherein: The dynamic identification of the critical path of the overpass support construction specifically includes: Model the construction plan of the overpass support as a directed acyclic graph, with nodes as image components and the paths between nodes as the dependency relationships of the image components; Calculate the cumulative construction period of all paths, and identify the path with the maximum construction period as the critical path.

10. The visualization overpass support construction progress analysis system based on BIM according to claim 7, characterized in that: The preset rules specifically include: Completed: The actual completion construction date is not empty; Not delayed - Under construction: The actual start construction date ≤ the planned start construction date, and the current date ≤ the planned completion construction date, and the actual completion construction date is empty; Delayed - Non - critical Path Node: The current node is not on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Delayed - Critical Path Node: The current node is on the critical path, and the actual start construction date > the planned start construction date, or the current date > the planned completion construction date, and the actual completion construction date is empty; Not yet started: The current date > the planned start construction date, and the actual completion construction date is empty.

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