A method and system for automatically dividing and generating a construction BIM from a highway engineering design BIM

Abstract

The application discloses a kind of highway engineering design BIM automatic division generation construction BIM method and system, method includes: according to highway engineering design parameter construction highway engineering design BIM model, for each component in model hang standardization design information;Based on highway engineering quality inspection and evaluation standard in combination with the construction characteristics of different structure types in highway engineering, construction is adapted to the division rule base of WBS sub-item management requirement;By reading design BIM model through automated splitting tool, parse and extract the information of each component, generate component information index library;By automated splitting tool calling the division rule base constructed, according to the information in the generated component information index library, design BIM model is split into construction BIM model using multi-dimensional division strategy;The integrity of construction BIM model split and generated is checked, and construction BIM model is output, to realize the automatic, accurate transformation of design BIM to construction BIM.

Description

Technical Field

[0001] This invention relates to the field of digital design and construction technology for highway engineering, and in particular to a method and system for automatically dividing highway engineering design BIM to generate construction BIM. Background Technology

[0002] Building Information Modeling (BIM) technology, as a core technology for promoting the digital transformation of highway engineering lifecycle management, has received widespread attention in the industry. However, the current application and promotion of BIM in highway engineering is still significantly limited. The core bottleneck lies in the serious discontinuity between the BIM models in the design and construction phases, with repeated modeling at each stage, making them unusable.

[0003] The core requirements of BIM models in the design and construction phases differ fundamentally: Design BIM primarily serves scheme demonstration, structural analysis, and drawing delivery. Its division logic is based on component types or unified parameter structures. For example, bridge design BIM is divided according to component types such as guardrails, bridge decks, main beams, cap beams, blocks, and piers; tunnel design BIM is divided according to component types such as primary lining, secondary lining, portals, and drainage ditches. The lining structures of different tunnel sections are also created separately only according to their cross-sectional forms. Construction BIM, on the other hand, needs to serve on-site implementation needs such as schedule management, cost control, and quality inspection. It needs to be constructed according to the WBS (Work Breakdown Structure) principle of dividing into sub-items. Its model granularity is much finer than that of design BIM and needs to be precisely mapped to specific construction units.

[0004] Due to the aforementioned differences, existing BIM design technology cannot be directly applied to the construction phase. This forces construction units to remodel based on design drawings, resulting in a large amount of repetitive work, extended project preparation cycles, and inconsistencies in model data between the design and construction phases, leading to information distortion and creating the industry pain point of "two separate systems for design and construction." This severely restricts the value of BIM technology in the full life-cycle management of highway engineering, reduces the efficiency of digital management of engineering projects, and increases project management costs.

[0005] Existing BIM model decomposition technologies are mostly applicable to the building construction field, lacking specialized solutions for highway engineering characterized by linear distribution, diverse component types, core stationing, and varied rules for sub-items. These solutions fail to meet the accuracy and efficiency requirements for converting highway engineering design BIM to construction BIM. Therefore, developing a technology that automatically divides design BIM into construction BIM models to adapt to the characteristics of highway engineering, achieving seamless integration of BIM models between the design and construction phases, has become a pressing technical problem for the industry. Summary of the Invention

[0006] To address the technical shortcomings of existing technologies, such as the inability to coordinate and integrate highway engineering design BIM and construction BIM, leading to redundant modeling, inconsistent data, and low application efficiency, this invention proposes a method and system for automatically dividing highway engineering design BIM into construction BIM, thereby achieving automated and precise conversion from design BIM to construction BIM.

[0007] This invention adopts the following technical solution: a method for automatically dividing and generating construction BIM from highway engineering design BIM, comprising the following steps:

[0008] S1. Constructing a Highway Engineering Design BIM Model: Based on the design parameters of bridges, tunnels, and road structures in highway engineering, create corresponding three-dimensional models to form a complete highway engineering design BIM model, and attach standardized design information to each component in the design BIM model.

[0009] S2. Establish a rule library for dividing construction sub-items in highway engineering: Based on the quality inspection and evaluation standards for highway engineering and combined with the construction characteristics of different structural types in highway engineering, construct a rule library for dividing sub-items that is adapted to the requirements of WBS sub-item management.

[0010] S3. Read Design BIM Information: Read the design BIM model through an automated splitting tool, parse and extract the connection information of each component, and generate a component information index library;

[0011] S4. Generate construction BIM model: The automated splitting tool calls the partitioning rule library built in step S2. Based on the information in the component information index library generated in step S3, a multi-dimensional partitioning strategy is used to split the design BIM model into a construction BIM model.

[0012] S5. Construction BIM Model Verification and Output: Perform integrity verification on the split and generated construction BIM model, and output the construction BIM model after the verification is passed.

[0013] As a preferred option, in step S1, the component division of the design BIM model follows the principle of combining component type with unified parameter structure;

[0014] The bridge structural components include: guardrails, bridge decks, main beams, cap beams, retaining blocks, and piers; the tunnel structural components include: primary lining, secondary lining, portal, drainage ditch, and arch support; and the roadbed and pavement structural components include: pavement base course, pavement surface course, median strip, platform drainage ditch, slope, and retaining wall.

[0015] As a preferred embodiment, in step S1, the standardized design information includes at least: component name, location information, layer attributes, material parameters, and structural dimensions; the location information includes the starting station number and / or the ending station number.

[0016] As a preferred embodiment, in step S2, the division rule library includes: the division criteria for unit projects, sub-projects, sub-items, and sub-sub-items, as well as the component types and division accuracy requirements corresponding to each construction unit.

[0017] As a preferred embodiment, in step S3, the automated splitting tool automatically recommends the optimal splitting interval value from the experience base based on at least one of the component type, material, span, or construction method, and parses the component attribute information through a regular expression matching algorithm to generate a component information index library.

[0018] Furthermore, the component information index library uses a hash table structure to store the key attribute information of each component, including the correspondence between component name, component type, and location station number, which is used to quickly identify and index component type, location station number, and layer attribute information.

[0019] As a preferred option, in step S4, the multi-dimensional division strategy includes: segmentation by station number, segmentation by distance interval, segmentation by layer classification, and segmentation by component function combination;

[0020] During the splitting process, the standardized design information is automatically inherited, and the sub-item numbers, construction unit names, and unique component codes required for the construction phase are supplemented.

[0021] Furthermore, the format of the unique component code is: Project Code + Contract Section Code + Unit Project Code + Sub-Unit Project Code + Sub-Section Project Code + Sub-Sub-Section Project Code + Item Project Code + Sub-Item Project Code.

[0022] As a preferred embodiment, in step S5, the integrity verification includes: verifying the integrity of the component, the consistency of information, and the division accuracy; wherein, the division accuracy verification is used to confirm that there are no invalid cut segments with a length less than a preset threshold.

[0023] The present invention also provides: a highway engineering design BIM automatic partitioning and construction BIM generation system for implementing the aforementioned method, comprising:

[0024] Design BIM building module: Build a highway engineering design BIM model based on design parameters, and attach standardized design information to the components in the model;

[0025] Rule base construction module: Establishes and manages a rule base for classifying parts of highway engineering construction, which is adapted to the requirements of the parts and components of highway engineering construction. It adopts a database storage structure and provides a visual editing interface, which supports users to add or modify the classification rules.

[0026] Information reading and parsing module: Reads the design BIM model file and parses, extracts, and indexes the key attribute information of each component;

[0027] The automated splitting module calls the partitioning rule library, matches the corresponding partitioning strategy according to the component information, executes the automated splitting of the model, and completes the inheritance and supplementation of construction information;

[0028] The verification and output module verifies the completeness, consistency, and accuracy of the generated construction BIM model, and outputs the final construction BIM model after the verification is passed.

[0029] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects:

[0030] 1. Eliminate collaboration gaps and solve the "two-tier" problem: This invention achieves automated conversion from design BIM to construction BIM through standardized design information linking and targeted construction sub-item division rules, ensuring the unified transmission of design data and construction data, and completely solving the industry pain point of the inability to connect BIM models in the design and construction stages.

[0031] 2. Reduce labor costs and improve efficiency: Avoid repetitive modeling work during the construction phase, significantly shorten the digital preparation cycle of the project. Verified by actual projects, it can reduce BIM modeling workload by more than 60% and improve modeling efficiency by 3-5 times.

[0032] 3. Adaptable to the characteristics of highway engineering, with high accuracy in division: This invention is designed for the linear distribution and core positioning of highway engineering, and constructs a special division rule library and multi-dimensional division strategy to ensure that the construction BIM model accurately matches the WBS sub-item management requirements, and the division accuracy meets the "Highway Engineering Quality Inspection and Evaluation Standard".

[0033] 4. Complete information transmission to ensure project quality: It achieves complete inheritance of design information, avoids distortion and omission in the information transmission process, provides accurate data support for progress management, cost control and quality inspection in the construction phase, and helps to improve the overall management level of the project.

[0034] 5. Strong compatibility and easy to promote: The rule base supports custom updates, which can be adapted to the needs of different highway engineering projects, lower the application threshold, and facilitate the in-depth promotion and large-scale use of BIM technology in the field of highway engineering. Attached Figure Description

[0035] Figure 1 This invention provides a structural block diagram for automatically generating a construction BIM system based on highway engineering design BIM.

[0036] Figure 2 This is a schematic diagram illustrating the process of generating a construction BIM from a tunnel design BIM in an embodiment of the present invention.

[0037] Figure 3This is a schematic diagram of the splitting results of the automated splitting module in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram illustrating the definition of sub-item rules in an embodiment of the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the application will be further described in detail below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments involved in this invention. All non-innovative embodiments based on these embodiments by other researchers in the art are within the protection scope of this invention. Furthermore, the step numbers in the embodiments of this invention are only set for ease of explanation and do not limit the order of the steps. The execution order of each step in the embodiments can be adaptively adjusted according to the understanding of those skilled in the art.

[0040] Example 1

[0041] This invention provides a method for automatically generating construction BIM from BIM design data. This embodiment uses a mountain tunnel (right line of the Lishichuanwu Tunnel) project as an example to detail the implementation process of this method:

[0042] S1. Constructing a BIM model for tunnel engineering design:

[0043] Specifically, firstly, based on the design drawing parameters of the right line of the Lishichuanwu Tunnel, a three-dimensional design BIM model was created, including components such as longitudinal drainage pipes, invert backfill, side ditch covers, waterproof membranes, geotextiles, various components of the central drainage ditch, road base course, and road surface course.

[0044] Then, using the attribute editing function of the modeling software, standardized design information is attached to each component, including: component name (such as "drainage_longitudinal drainage pipe"), location information (starting pile number K142+466, ending pile number K146+146), layer attributes ("drainage system - longitudinal drainage pipe"), material parameters, structural dimensions, etc.

[0045] S2. Establish a rule base for dividing tunnel engineering construction into sub-items:

[0046] Specifically, based on the tunnel engineering division requirements in Appendix A of the "Highway Engineering Quality Inspection and Evaluation Standard" JTG F80 / 1—2023, and combined with the construction characteristics of the right line of the Lishichuanwu Tunnel, a division rule library is constructed; it is clarified that this tunnel project is divided into multiple sub-projects according to the chainage range K142+466-K146+146, and each sub-project is further subdivided into sub-items according to component type. At the same time, a division accuracy standard is set (accuracy of 0.5 meters, that is, cutting is not performed when the extra length is less than 0.5 meters).

[0047] Differentiated division models are formulated for different component types. For example, drainage (longitudinal drainage pipe) and tunnel body (invert arch backfill) are divided by component spacing, while road base and road surface are divided by station spacing. The division spacing is set at 10 meters according to common project construction methods.

[0048] S3. Reading and parsing design BIM information:

[0049] Specifically, through an automated splitting tool, the BIM model of the right line design of the Lishichuanwu Tunnel constructed in step S1 is read, the attachment attribute information of each component is parsed, and a component information index library is generated. The index library clearly records the correspondence between key information such as component name, tunnel name (Lishichuanwu Tunnel), sub-name (right line), starting station number, ending station number, and component type, and can quickly locate the station number range and preset splitting mode corresponding to "drainage_longitudinal drainage pipe".

[0050] S4. Automated division and generation of construction BIM model:

[0051] Specifically, the automated splitting tool calls the partitioning rule library from step S2 to first scan the components of the design BIM model. Based on the index library, it identifies the type and preset splitting mode of each component. For 14 types of components, including drainage_longitudinal drainage pipe, tunnel_invert arch backfill, drainage_side ditch cover, and tunnel_waterproofing slab, a component spacing splitting strategy is adopted, splitting to the smallest construction unit at 10-meter intervals. For three types of components, including road base, road surface, and tunnel_cable trough cover, a stationing spacing splitting strategy is adopted, with road base and road surface splitting at 10-meter intervals and tunnel_cable trough cover splitting at 1-meter intervals. During the splitting process, it is ensured that the design information carried in the attribute information of each component remains unchanged. In this embodiment, the automated splitting module's splitting result interface is as follows: Figure 3 As shown.

[0052] After the breakdown is completed, an automatic coding operation is performed based on the sub-item rule base: A preset coding template is imported, and basic coding information such as Project code, Contract section code (TJ01), Unit project code (01), and Sub-unit project code (01) is entered. Based on the mapping relationship between component type and sub-item (e.g., drainage_longitudinal drainage pipe corresponds to sub-project "drainage and waterproofing" and sub-item "waterproof layer"; tunnel_invert backfill corresponds to sub-project "tunnel lining," etc.), one-click coding is completed according to the format "Project code + Contract section code + Unit project code + Sub-unit project code + Sub-project code + Sub-item project code," generating a unique component code. Simultaneously, construction information such as the sub-item project number (e.g., "SD-02-01") and construction unit name (e.g., "K142+466-K142+476 longitudinal drainage pipe construction section") is added. In this embodiment, the sub-item rule definition interface is as follows: Figure 4 As shown.

[0053] S5. Construction BIM Model Verification and Output:

[0054] Specifically, the integrity of the construction BIM model generated by the splitting is verified. The verification includes three aspects: first, component integrity, confirming that all original design components have been completely split without omission; second, splitting accuracy, confirming that there are no invalid cuts with an extra length of less than 0.5 meters, which meets the preset accuracy standard; and third, information integrity, confirming that the coding information of each construction unit is complete and accurate, and that there is no missing design information.

[0055] After verification, the output is a model file adapted to the needs of tunnel construction management. The generated construction BIM model can support arbitrary combination and relationship management between various components of mountain tunnels, and can be used for subsequent tunnel construction schedule planning, cost accounting and quality control.

[0056] In this embodiment, the result of splitting the tunnel design BIM into a construction BIM is illustrated, as follows: Figure 2 As shown, the figure adopts a left-right column comparison layout. The left side is a schematic diagram of the tunnel design BIM model, with components distinguished by different colors according to type, and green representing the secondary lining structure. The right side is a schematic diagram of the split construction BIM model. According to the construction sub-items, each ring is 10m long, and different cross-sections are directly separated, split into more refined secondary lining structures in green and purple. This intuitively demonstrates the transformation process of the design BIM to construction BIM in this invention.

[0057] Example 2

[0058] This provides a system for automatically generating construction BIM from highway engineering design BIM, such as... Figure 1 As shown, it includes a BIM design module, a rule base module, an information reading and parsing module, an automated splitting module, and a verification and output module.

[0059] The specific implementation methods of each module are as follows:

[0060] Design BIM building modules: Select a suitable BIM platform for secondary development, provide standardized modeling templates for bridge, tunnel and road structures, and automatically generate 3D design BIM models after users input design parameters; develop automatic attribute association and hooking technology, which can add standardized design information such as component name, location station number and layer attributes to components in batches to avoid manual input errors.

[0061] Rule base construction module: It adopts a database storage structure and has built-in construction sub-item division standards for different structural types such as roadbed, pavement, bridge, and tunnel. The basic rule base is built based on the "Highway Engineering Quality Inspection and Evaluation Standard" JTG F80 / 1—2023. It provides a visual editing interface, allowing users to customize, add, and modify division rules according to specific project needs. After the rules are modified, they are automatically synchronized to the system's core algorithm.

[0062] Information reading and parsing module: Reads the design BIM model file; parses component attribute information through regular expression matching algorithm, extracts key information and builds an index library. The index library is stored in a hash table structure to ensure the efficiency of information query and retrieval.

[0063] The automated partitioning module, as the core module of the system, connects the rule base and the information index base. It matches the corresponding partitioning rules based on component type and location information, automatically selecting the optimal partitioning strategy (e.g., bridge engineering prioritizes partitioning by layer, pavement engineering prioritizes partitioning by distance interval, tunnel engineering structural parts prioritize partitioning by station number, and pavement and drainage structures prioritize partitioning by distance interval; it also automatically recommends partitioning interval values ​​based on key information such as structural type, material, span, and construction method, drawing on past project experience). This enables structured inheritance of design information, using XML format to store information mapping relationships, ensuring complete information transmission.

[0064] Verification and Output Module: Built-in integrity verification algorithm automatically verifies the construction BIM model from three dimensions: number of components, information integrity, and partitioning accuracy; when the verification fails, an error report is output, indicating the components that need to be corrected and the type of problem; after the verification passes, a construction BIM that meets the needs of construction management applications is obtained.

[0065] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for automatically generating construction BIM from highway engineering design BIM, characterized in that, Includes the following steps: S1. Constructing a Highway Engineering Design BIM Model: Based on the design parameters of bridges, tunnels, and road structures in highway engineering, create corresponding three-dimensional models to form a complete highway engineering design BIM model, and attach standardized design information to each component in the design BIM model. S2. Establish a rule library for dividing construction sub-items in highway engineering: Based on the quality inspection and evaluation standards for highway engineering and combined with the construction characteristics of different structural types in highway engineering, construct a rule library for dividing sub-items that is adapted to the requirements of WBS sub-item management. S3. Read Design BIM Information: Read the design BIM model through an automated splitting tool, parse and extract the connection information of each component, and generate a component information index library; S4. Generate construction BIM model: The automated splitting tool calls the partitioning rule library built in step S2. Based on the information in the component information index library generated in step S3, a multi-dimensional partitioning strategy is used to split the design BIM model into a construction BIM model. S5. Construction BIM Model Verification and Output: Perform integrity verification on the split and generated construction BIM model, and output the construction BIM model after the verification is passed.

2. The method according to claim 1, characterized in that, In step S1, the component division of the design BIM model follows the principle of combining component type with unified parameter structure; The bridge structural components include: guardrails, bridge decks, main beams, cap beams, retaining blocks, and piers; the tunnel structural components include: primary lining, secondary lining, portal, drainage ditch, and arch support; and the roadbed and pavement structural components include: pavement base course, pavement surface course, median strip, platform drainage ditch, slope, and retaining wall.

3. The method according to claim 1, characterized in that, In step S1, the standardized design information includes at least: component name, location information, layer attributes, material parameters, and structural dimensions; the location information includes the starting station number and / or the ending station number.

4. The method according to claim 1, characterized in that, In step S2, the division rule library includes: the division standards for unit projects, sub-projects, sub-items, and sub-sub-items, as well as the component types and division accuracy requirements corresponding to each construction unit.

5. The method according to claim 1, characterized in that, In step S3, the automated splitting tool automatically recommends the optimal splitting interval value from the experience base based on at least one of the component type, material, span, or construction method, and parses the component attribute information through a regular expression matching algorithm to generate a component information index library.

6. The method according to claim 5, characterized in that, In step S3, the component information index library uses a hash table structure to store the key attribute information of each component, including the correspondence between component name, component type, and location station number, which is used to quickly identify and index component type, location station number, and layer attribute information.

7. The method according to claim 1, characterized in that, In step S4, the multi-dimensional division strategy includes: segmentation by station number, segmentation by distance interval, segmentation by layer classification, and segmentation by component function combination; During the splitting process, the standardized design information is automatically inherited, and the sub-item numbers, construction unit names, and unique component codes required for the construction phase are supplemented.

8. The method according to claim 7, characterized in that, The format of the unique component code is: Project Code + Contract Section Code + Unit Project Code + Sub-Unit Project Code + Sub-Section Project Code + Sub-Sub-Section Project Code + Item Project Code + Sub-Item Project Code.

9. The method according to claim 1, characterized in that, In step S5, the integrity verification includes: verifying the integrity of the components, the consistency of information, and the division accuracy; wherein, the division accuracy verification is used to confirm that there are no invalid cut segments with a length less than a preset threshold.

10. A highway engineering design BIM automatic partitioning and construction BIM generation system for implementing the method described in any one of claims 1-9, characterized in that, include: Design BIM building module: Build a highway engineering design BIM model based on design parameters, and attach standardized design information to the components in the model; Rule base construction module: Establishes and manages a rule base for classifying parts of highway engineering construction, which is adapted to the requirements of the parts and components of highway engineering construction. It adopts a database storage structure and provides a visual editing interface, which supports users to add or modify the classification rules. Information reading and parsing module: Reads the design BIM model file and parses, extracts, and indexes the key attribute information of each component; The automated splitting module calls the partitioning rule library, matches the corresponding partitioning strategy according to the component information, executes the automated splitting of the model, and completes the inheritance and supplementation of construction information; The verification and output module verifies the completeness, consistency, and accuracy of the generated construction BIM model, and outputs the final construction BIM model after the verification is passed.

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