A bim-based fire pipe network assembly construction planning method

Abstract

The application is suitable for the technical field of building planning, and particularly relates to a fire-fighting pipe network assembly construction planning method based on BIM, which comprises the following steps: obtaining planning requirement instructions of fire-fighting pipe network assembly construction and fire-fighting BIM multidimensional information; performing fire-fighting pipe network assembly construction planning deduction according to the planning requirement instructions and the fire-fighting BIM multidimensional information, generating a fire-fighting pipe network construction planning reasoning scheme; performing fire-fighting special key support information missing judgment on the fire-fighting pipe network construction planning reasoning scheme, and generating a fire-fighting BIM information completion instruction in the case that the fire-fighting special key support information is missing; performing fire-fighting special multidimensional information extraction and analysis on a target fire-fighting BIM unit in the fire-fighting pipe network full-amount BIM according to the fire-fighting BIM information completion instruction, updating the fire-fighting BIM multidimensional information, then performing fire-fighting pipe network assembly construction planning deduction, and generating a fire-fighting pipe network construction planning reasoning scheme. The method comprehensively improves the scientificity, efficiency and feasibility of fire-fighting pipe network assembly construction planning.

Description

Technical Field

[0001] This application belongs to the field of architectural planning technology, and in particular relates to a BIM-based prefabricated construction planning method for fire protection pipe networks. Background Technology

[0002] In the field of fire protection pipeline construction, the prefabricated construction mode is widely used due to its advantages of high construction efficiency and less on-site work. BIM technology has also gradually become an important technical means for the planning of prefabricated construction of fire protection pipelines.

[0003] Existing planning methods often follow the planning logic of general building pipelines. When information is missing, existing methods often adopt the method of re-collecting BIM data across the entire area or supplementing it by referring to general pipeline information. This is not only inefficient, but also prone to introducing irrelevant data to interfere with planning decisions. As a result, the generated construction planning scheme often has problems such as mismatch with the layout of building fire compartments, substandard pipeline pressure parameters, and poor connection between prefabricated components and on-site assembly. Summary of the Invention

[0004] This application provides a BIM-based prefabricated construction planning method for fire protection pipeline networks, which can solve the problem that the generated construction planning scheme does not match the actual needs when information is missing.

[0005] In a first aspect, embodiments of this application provide a BIM-based prefabricated construction planning method for fire protection pipeline networks, including: Obtain planning requirements and multi-dimensional fire protection BIM information for the prefabricated construction of fire protection pipe networks; wherein, the planning requirements include fire protection pipe network type parameters, building fire compartment indicators, pipe network design pressure requirements and fire protection assembly period standards, and the multi-dimensional fire protection BIM information includes at least one of the following: sprinkler network design parameters, fire hydrant network layout information, and initial parameters for the prefabrication of fire pump room components.

[0006] The technical solutions described in this application embodiment have at least the following technical effects: The BIM-based prefabricated construction planning method for fire protection piping networks provided in this application acquires planning requirements for prefabricated fire protection piping network construction, including fire protection piping network type parameters, building fire compartment indicators, piping network design pressure requirements, and fire protection assembly schedule standards, as well as multi-dimensional fire protection BIM information, including at least one of the following: sprinkler network design parameters, fire hydrant network layout information, and initial prefabrication parameters of fire pump room components. Then, based on the planning requirements and the aforementioned multi-dimensional fire protection BIM information, a prefabricated construction planning deduction for the fire protection piping network is performed to generate a fire protection piping network construction planning reasoning scheme. This scheme possesses the basic attributes of fire protection compliance and site adaptability, reducing the complexity of traditional methods. The problem stems from a lack of specific constraints, leading to an overemphasis on general applications and a neglect of fire protection. The solution involves assessing the absence of critical fire protection-specific supporting information in the fire protection network construction planning and reasoning scheme. If this information is deemed insufficient during the planning and deduction process, a fire protection BIM information completion instruction is generated. Finally, based on this instruction, fire protection-specific multi-dimensional information is extracted and analyzed from the target fire protection BIM units within the full BIM of the fire protection network, updating the multi-dimensional fire protection BIM information. The process then returns to the steps of performing prefabricated construction planning and deduction of the fire protection network based on the aforementioned planning requirement instruction and the multi-dimensional fire protection BIM information, generating a fire protection network construction planning and reasoning scheme. This method precisely fills the gaps in BIM information, ensuring that planning and simulation always rely on complete and compliant fire protection-specific data. Simultaneously, it uses iterative simulation to dynamically optimize the planning scheme, ensuring that the final prefabricated fire protection network construction plan is highly compatible with fire protection specifications, actual on-site construction, and prefabrication requirements. This significantly reduces the rework rate of prefabricated component installation, shortens the construction period, and effectively addresses the core pain points of insufficient compliance, lack of accuracy, and poor implementability in complex scenarios, comprehensively improving the scientific rigor, efficiency, and feasibility of prefabricated fire protection network construction planning.

[0007] Secondly, embodiments of this application provide a BIM-based prefabricated construction planning system for fire protection pipeline networks, including: The acquisition module is used to acquire planning requirements instructions and fire protection BIM multi-dimensional information for the prefabricated construction of fire protection pipe networks. The planning requirements instructions include fire protection pipe network type parameters, building fire compartment indicators, pipe network design pressure requirements and fire protection assembly period standards. The fire protection BIM multi-dimensional information includes at least one of the following: sprinkler pipe network design parameters, fire hydrant pipe network layout information, and fire pump room component prefabrication initial parameters. The planning module is used to perform prefabricated construction planning simulation of fire protection pipeline network based on the planning requirement instructions and the multi-dimensional information of fire protection BIM, and generate a construction planning reasoning scheme for fire protection pipeline network. The judgment module is used to judge the lack of fire-specific key support information in the construction planning reasoning scheme of the fire pipeline network, and generate a fire BIM information completion instruction when the fire-specific key support information is missing in the planning and deduction process. The update module is used to extract and parse fire-specific multi-dimensional information of the target fire-fighting BIM unit in the full BIM of the fire-fighting pipeline network according to the fire-fighting BIM information completion instruction, update the fire-fighting BIM multi-dimensional information, and then return to the step of performing fire-fighting pipeline network prefabricated construction planning simulation according to the planning requirement instruction and the fire-fighting BIM multi-dimensional information to generate a fire-fighting pipeline network construction planning reasoning scheme.

[0008] Thirdly, embodiments of this application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0009] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect above.

[0010] Fifthly, embodiments of this application provide a computer program product that, when run on an electronic device, causes the electronic device to execute the BIM-based prefabricated construction planning method for fire protection pipeline networks described in the first aspect above.

[0011] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a flowchart illustrating the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application embodiment; Figure 2 This is a flowchart of the target fire protection BIM unit selection process for the prefabricated construction planning method for fire protection pipeline networks provided in this application embodiment; Figure 3This is a similarity matching value screening curve of the fire protection model for the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in the embodiments of this application; Figure 4 This is a flowchart illustrating the fire protection-specific multi-dimensional information extraction and analysis process of the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application embodiment. Figure 5 This is a structural schematic diagram of the BIM-based prefabricated construction planning system for fire protection pipeline networks provided in the embodiments of this application; Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0014] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0015] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0016] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0017] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determination" or "if the described condition or event is detected" may be interpreted, depending on the context, as "once determination," "in response to determination," "once the described condition or event is detected," or "in response to the detection of the described condition or event."

[0018] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0020] Existing planning methods lack specific fire protection-related requirements for defining construction needs, often adopting the planning logic of general building pipelines. They fail to incorporate core fire protection parameters such as fire network type (e.g., wet / dry sprinkler systems), building fire compartment indicators, and pipeline design pressure requirements as rigid constraints into the planning requirements system, leading to a disconnect between planning schemes and fire protection codes. When information is missing, existing methods often resort to re-collecting BIM data across the entire area or supplementing it with general pipeline information. This is not only inefficient but also prone to introducing irrelevant data that interferes with planning decisions. Consequently, the generated construction plans frequently exhibit problems such as mismatches with building fire compartment layouts, substandard pipeline pressure parameters, and poor integration between prefabricated components and on-site assembly. These issues directly result in high rework rates for on-site installation of prefabricated fire network components and construction delays, especially in complex scenarios such as high-rise buildings and large commercial complexes, severely hindering the high-quality advancement of prefabricated fire network construction.

[0021] To address the aforementioned issues, this application provides a BIM-based method for prefabricated construction planning of fire protection piping networks. This method involves acquiring planning requirements for prefabricated fire protection piping network construction, including parameters such as fire protection piping network type, building fire compartment indicators, piping design pressure requirements, and fire protection assembly schedule standards, as well as multi-dimensional fire protection BIM information, including at least one of the following: sprinkler network design parameters, fire hydrant network layout information, and initial prefabrication parameters of fire pump room components. Then, based on the planning requirements and the aforementioned multi-dimensional fire protection BIM information, a prefabricated construction planning deduction of the fire protection piping network is performed to generate a fire protection piping network construction planning reasoning scheme. This scheme possesses the fundamental attributes of fire protection compliance and site adaptability, reducing the problems caused by the lack of specific constraints in traditional schemes. The process addresses the issue of prioritizing general applications over fire protection; it then assesses the lack of fire protection-specific key supporting information in the fire protection pipeline network construction planning and reasoning scheme. If the planning and reasoning process lacks fire protection-specific key supporting information, a fire protection BIM information completion instruction is generated. Finally, based on the fire protection BIM information completion instruction, fire protection-specific multi-dimensional information extraction and parsing are performed on the target fire protection BIM units in the full BIM of the fire protection pipeline network, updating the fire protection BIM multi-dimensional information. The process then returns to the steps of performing prefabricated construction planning and reasoning for the fire protection pipeline network based on the planning requirement instruction and the fire protection BIM multi-dimensional information, generating a fire protection pipeline network construction planning and reasoning scheme. This method precisely fills the gaps in BIM information, ensuring that planning and simulation always rely on complete and compliant fire protection-specific data. Simultaneously, it uses iterative simulation to dynamically optimize the planning scheme, ensuring that the final prefabricated fire protection network construction plan is highly compatible with fire protection specifications, actual on-site construction, and prefabrication requirements. This significantly reduces the rework rate of prefabricated component installation, shortens the construction period, and effectively addresses the core pain points of insufficient compliance, lack of accuracy, and poor implementability in complex scenarios, comprehensively improving the scientific rigor, efficiency, and feasibility of prefabricated fire protection network construction planning.

[0022] The BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application embodiment can be applied to electronic devices. In this case, the electronic device is the executing entity of the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application embodiment. This application embodiment does not impose any restrictions on the specific type of electronic device.

[0023] For example, electronic devices can be mobile phones, tablets, wearable devices, augmented reality (AR) / virtual reality (VR) devices, laptops, ultra-mobile personal computers (UMPCs), netbooks, personal digital assistants (PDAs), desktop computers, smart screens, smart TVs, and other terminal devices, computers, laptops, handheld communication devices, handheld computing devices, satellite wireless equipment, customer premises equipment (CPEs), and / or other devices used for communication over wireless systems, as well as next-generation communication systems, such as mobile terminals in 5G networks or mobile terminals in future evolved Public Land Mobile Networks (PLMNs).

[0024] To better understand the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application, the specific implementation process of the BIM-based prefabricated construction planning method for fire protection pipeline networks provided in this application will be described below by way of example.

[0025] Figure 1 This paper illustrates a schematic flowchart of a BIM-based prefabricated construction planning method for fire protection piping networks, as provided in an embodiment of this application. The BIM-based prefabricated construction planning method for fire protection piping networks includes: S100, obtain planning requirements instructions and fire protection BIM multi-dimensional information for the prefabricated construction of fire protection pipe network; among them, the planning requirements instructions include fire protection pipe network type parameters, building fire compartment indicators, pipe network design pressure requirements and fire protection assembly period standards, and the fire protection BIM multi-dimensional information includes at least one of the following: sprinkler pipe network design parameters, fire hydrant pipe network layout information, and fire pump room component prefabrication initial parameters.

[0026] It is understandable that the planning requirements directive is a comprehensive set of constraints formulated based on project construction drawings, current national standards and specifications for fire protection engineering, and project construction organization design. It includes parameters specifying the type of fire protection piping used in the project, such as wet sprinkler networks, dry sprinkler networks, fire hydrant networks, and fire monitor networks. It also indicates the applicable areas and supporting fire protection facility requirements for each network. These parameters can be formulated based on mandatory standards such as the "Technical Specification for Fire Water Supply and Fire Hydrant Systems" and the "Design Specification for Automatic Sprinkler Systems." The building fire compartmentation indicators match the compartment boundaries and durability of the building's main BIM model. Fire rating, fire separation distance, and fire sealing requirements are specified, clearly defining the restrictions on the layout of fire protection pipe networks in each fire compartment. The design pressure requirements for the pipe network are calculated based on factors such as building height, pipe network length, and the location of the most unfavorable fire protection facilities, including core data such as working pressure, test pressure, and head loss control values. For super high-rise buildings, additional pressure parameters for zoned water supply are specified. The fire protection assembly schedule standards take into account the prefabrication production cycle of the fire protection pipe network, the connection of on-site assembly procedures, and the schedule coordination with the main building construction, specifying the schedule nodes for each construction section, such as pump room integrated modules, main pipes, and branch pipes, as well as the connection time between prefabrication and assembly. The acquisition of multi-dimensional fire protection BIM information centers on the project's fire protection professional BIM design model. Standardized data is extracted from BIM software such as Revit, Magicaad, and Glodon GQI. Sprinkler network design parameters include pipe diameter, pipe material, pipe slope, sprinkler head type, installation spacing, and the location of the most unfavorable sprinkler point. Fire hydrant network layout information includes hydrant outlet installation height, fire hydrant spacing, network routing, valve location, and pressure reducing device parameters. Initial prefabrication parameters for fire pump room components include pump body model, pump inlet and outlet dimensions, pipe connection specifications, valve and instrument models, and the overall dimensions of the pump room integrated module. In this step, all acquired data undergoes format standardization and accuracy verification, converting non-standard data from different BIM software into the IFC universal exchange format.

[0027] S200 performs prefabricated construction planning simulations of fire protection pipe networks based on planning requirements and multi-dimensional information from fire protection BIM, generating a construction planning reasoning scheme for fire protection pipe networks.

[0028] This step, as understood, uses the planning requirements instructions obtained from S100 as constraints and multi-dimensional information from fire protection BIM as the model foundation. It leverages digital tools to achieve intelligent and compliant simulation of fire protection pipeline assembly construction planning, ultimately generating a reasoning scheme that combines fire protection compliance, site adaptability, and construction operability. The execution of the planning simulation relies on a multi-software collaborative digital simulation system. Core tools include a lightweight BIM engine, fire protection pipeline hydraulic calculation software, construction progress simulation software, and pipeline comprehensive optimization software. These tools achieve seamless linkage through data interfaces, embedding various indicators from the planning requirements instructions as hard constraints into the simulation model. For example, pipeline design pressure is used as the core constraint for hydraulic calculations, building fire compartment indicators are used as boundary constraints for pipeline layout, fire protection assembly period standards are used as time constraints for construction process planning, and fire protection pipeline type parameters are used as type constraints for model construction. The simulation process revolves around five core dimensions: fire protection compliance, layout rationality, prefabrication adaptability, process coordination, and hydraulic compliance.

[0029] Fire safety compliance simulations can be performed against national standards such as the "Code for Fire Protection Design of Buildings" to verify whether the pipeline layout, pipe material selection, and fire resistance rating comply with mandatory provisions. For example, whether fireproof sealing is installed for pipelines crossing fire compartments, and whether the installation spacing of sprinkler heads meets the code requirements. Layout rationality simulations, combined with the building's main structure BIM model, optimize the laying direction of fire protection pipelines, avoiding critical parts of the building structure, reserving sufficient maintenance space, and simultaneously achieving coordinated layout with other professional pipelines such as HVAC, electrical, and water supply and drainage to reduce pipeline collisions. Prefabrication compatibility simulations verify the matching degree between the prefabricated component parameters in the multi-dimensional information of the fire protection BIM and the on-site assembly scenario, verifying the dimensions, connection methods, etc., of the prefabricated components. The interface specifications should be precisely matched with the on-site BIM model, and any mismatched parameters should be initially adjusted. Work process coordination simulations should be conducted in conjunction with fire protection assembly schedule standards to plan the assembly and construction sequence of the fire protection pipeline network. The prefabrication completion time and on-site assembly time for components such as pump room integrated modules, main pipes, branch pipes, and sprinklers should be clearly defined to avoid conflicts with the main building construction and other professional construction, while optimizing the allocation of construction resources. Hydraulic compliance simulations should use professional hydraulic calculation software to simulate indicators such as flow rate, head loss, and flow rate at the most unfavorable point under design pressure to verify whether fire extinguishing requirements are met. If hydraulic indicators do not meet standards, pipe diameter, pump parameters, etc., should be automatically adjusted, and the simulation should be repeated. The simulation process can adopt an iterative simulation logic, first performing a basic scheme simulation, then verifying the simulation results from multiple dimensions, automatically optimizing and adjusting any content that does not meet the constraints, iterating repeatedly until all dimensions meet the requirements. The final generated fire protection pipeline network construction planning and reasoning scheme is a comprehensive solution integrating multiple forms, including four core parts: BIM 3D visualization model, 2D construction drawings, text description report, and quantitative parameter table. The BIM 3D model intuitively presents the overall layout of the fire protection pipeline network, the installation location of prefabricated components, and the collaborative relationship of various professional pipelines; the 2D construction drawings clearly define the detailed construction technology and dimensional requirements of each construction section; the text description report includes the basis, process, optimization and adjustment explanations, and quality control points of the planning and reasoning; the quantitative parameter table covers core quantitative indicators such as pipeline pressure, assembly accuracy, and construction period milestones. All contents of the reasoning scheme correspond one-to-one with the parameters of the planning requirements and the multi-dimensional information of fire protection BIM, and version identification is performed in the BIM management platform.

[0030] S300 performs a fire protection-specific key support information judgment on the fire protection pipeline construction planning reasoning scheme, and generates a fire protection BIM information supplementation instruction when it is determined that the fire protection-specific key support information is missing in the planning and reasoning process.

[0031] It is understandable that fire protection-specific key support information refers to the core information that ensures the fire protection compliance, hydraulic compliance, prefabrication accuracy, and fire compartment adaptability of the prefabricated construction planning and simulation of fire protection pipe networks. It is an indispensable set of information that conforms to the specific technical requirements of fire protection pipe networks and current fire protection engineering standards during the planning and simulation process. Distinguished from the basic planning information for general building pipelines, it directly determines whether the fire protection pipe network construction planning and simulation scheme is feasible and compliant with fire protection acceptance standards. This type of information revolves around the core needs of prefabricated construction of fire protection pipe networks, including core parameters for hydraulic calculations, specific parameters for fire compartment pipe network layout, key parameters for the connection between prefabricated components and on-site assembly, and parameters for the compatibility of fire protection facilities. All types of information comply with the mandatory requirements of national standards such as the "Technical Specification for Fire Water Supply and Fire Hydrant Systems," the "Design Code for Automatic Sprinkler Systems," and the "Code for Fire Protection Design of Buildings," and are essential information to support the verification and compliance of various dimensions of the planning and simulation.

[0032] For example, the fire protection network construction planning scheme can be comprehensively scored according to the preset scoring rules, based on three dimensions: completeness of fire protection parameters, adaptability to fire compartment scenarios, and compliance of fire protection assembly precision. This comprehensive score can then be used to determine whether key fire protection-specific supporting information is missing. Alternatively, all specific output content under each core dimension can be extracted from the fire protection network construction planning scheme. Examples include: fire protection compliance dimensions such as cross-fire compartment pipeline fireproofing design parameters, sprinkler head installation spacing verification values, and pipe material fire resistance rating selection results; hydraulic compliance dimensions such as pipeline head loss calculation results, sprinkler flow rate data at the most unfavorable point, and zoned water supply pressure distribution parameters; prefabrication assembly precision dimensions such as fire pump room integrated module interface specifications, matching parameters between prefabricated main pipes and on-site supports, and prefabricated pipe fitting beveling precision requirements; and fire compartment adaptability dimensions such as the fire compartment network of each fire compartment. The process includes: laying routing parameters, fire compartment boundary pipe network valve location parameters, etc.; then, for each specific output, searching the collected fire protection BIM multi-dimensional information for corresponding original supporting information, and verifying whether the original supporting information meets the requirements of the planning requirements and whether it can serve as a valid basis for the deduction of the output; finally, if a specific output under a certain core dimension lacks corresponding fire protection BIM multi-dimensional information support, or if the corresponding original supporting information does not comply with the current national fire protection standards or does not meet the requirements of the planning requirements, it is determined that there is a lack of fire protection-specific key supporting information in that dimension. If any core dimension has missing information, the overall planning deduction process is determined to lack fire protection-specific key supporting information; if all specific outputs under each core dimension have compliant and accurate fire protection BIM multi-dimensional information as valid support, it is determined that there is no lack of fire protection-specific key supporting information, and so on, but not limited to this.

[0033] In one possible implementation, step S300 involves determining the lack of fire-specific key supporting information in the fire protection network construction planning reasoning scheme, including: S310, according to the preset scoring rules for fire protection pipeline construction planning schemes, comprehensively scores the fire protection pipeline construction planning scheme from three dimensions: completeness of fire protection parameters, adaptability to fire compartment scenarios, and accuracy of fire protection assembly, to obtain the comprehensive score value of the fire protection planning scheme. Among them, the completeness of fire protection parameters includes the completeness of pipeline pressure parameters and fire resistance rating parameters of pipe materials; the adaptability to fire compartment scenarios includes the adaptability of pipeline layout across fire compartments and fireproof sealing node design; and the accuracy of fire protection assembly includes the accuracy of sprinkler head installation spacing, fire hydrant main pipe connection, and pump room integrated module assembly.

[0034] It is understandable that the scoring for each dimension is based on the constraints of current national fire protection engineering standards and planning requirements, and a percentage-based scoring method is used for each item: For the fire protection parameter completeness dimension, scores are assigned based on the percentage of missing core parameters such as pipeline pressure and pipe material fire resistance rating, and the compliance of parameter data with national standards / planning requirements. Full marks are awarded for complete and compliant parameters, while points are deducted proportionally for missing or non-compliant parameters. For the fire compartment scenario adaptability dimension, scores are based on the matching of cross-fire compartment pipeline layout with the building's fire compartment boundaries. The design of fireproof sealing nodes is scored based on compliance with the "Code for Fire Protection Design of Buildings". Full marks are awarded for no conflict in the layout and for sealing design that is completely in accordance with the rules. Points are deducted according to the severity of the problem if there are local conflicts or design flaws. In the dimension of fire protection assembly accuracy, points are awarded based on the degree of conformity between the accuracy deviation values ​​of sprinkler head installation spacing, fire hydrant main pipe connection and pump room integrated module assembly and the accuracy requirements in the planning requirements, as well as the proportion of accuracy compliance items. Full marks are awarded if all accuracy deviations are within the allowable range and all meet the standards. Points are deducted proportionally if deviations exceed the regulations or there are non-compliant items.

[0035] In some embodiments, the preset planning scheme scoring rules are as follows: weight coefficients are set for parameter completeness, scenario adaptability, and accuracy compliance, the sum of the weight coefficients of each dimension is 1, and the weight coefficients are dynamically adjusted according to the scenario type of fire protection pipeline assembly construction. The comprehensive score value of the scheme is calculated by weighted summation.

[0036] Understandably, for super high-rise building scenarios, the weighting coefficient for fire protection assembly accuracy compliance is the highest, focusing on the assembly accuracy of pump room integrated modules and high-zone pipeline connections, while also increasing the weighting of pipeline pressure parameters in the fire protection parameter integrity score. For large commercial complex scenarios, the weighting coefficient for fire compartment scenario adaptability is the highest, focusing on the rationality of multi-fire compartment pipeline layout and the compliance of fireproof sealing node design. For industrial plant scenarios, the weighting coefficient for fire protection parameter integrity is the highest, focusing on the compliance of pipe fire resistance rating, pipeline pressure, and the matching of plant fire hazard category. The weighted sum of the weighting coefficients for each dimension, after dynamic adjustment, is always 1. The weighted summation calculation formula is: Comprehensive score of fire protection planning scheme = Fire protection parameter integrity score × corresponding weighting coefficient + Fire compartment scenario adaptability score × corresponding weighting coefficient + Fire protection assembly accuracy compliance score × corresponding weighting coefficient.

[0037] S320. If the comprehensive score of the fire protection planning scheme is lower than the preset score, it is determined that the planning and simulation process of the prefabricated construction of the fire protection pipeline network lacks key supporting information specific to fire protection; otherwise, it is determined that the planning and simulation process does not lack key supporting information specific to fire protection.

[0038] It is understandable that the preset score is a quantitative judgment threshold formulated by combining the national mandatory requirements for the prefabricated construction of fire protection pipe networks, industry construction standards, and the minimum compliance requirements for different scenarios. Its value range is consistent with the percentage system of the sub-item scores of each dimension, and can be dynamically adjusted in sync with the type of construction scenario. For example, the preset score for super high-rise buildings is higher than that for industrial plants, which is to ensure the completeness of information support for planning schemes under high-requirement scenarios. This preset score is the core basis for determining whether fire protection-specific key support information is missing. If the overall score is below this threshold, it means that the fire protection pipeline construction planning and reasoning scheme has a low score in at least one core dimension due to missing, incomplete, or non-compliant fire protection-specific key support information, resulting in an overall score that fails to meet the minimum requirements. This also means that the existing fire protection BIM multi-dimensional information cannot provide complete support for planning and reasoning, making it difficult to guarantee the fire protection compliance, on-site adaptability, and construction operability of the planning scheme. On the other hand, if the overall score is above or equal to this threshold, it means that the planning scheme meets the minimum requirements in all three core dimensions. The existing fire protection BIM multi-dimensional information can provide complete and compliant fire protection-specific key support information for each stage of planning and reasoning, and the reasoning results of each dimension have corresponding information as a basis.

[0039] This setup, employing a multi-dimensional quantitative scoring system combined with dynamic weighting and threshold determination, assesses the lack of critical fire protection-specific supporting information. This achieves objective and standardized assessment of information deficiencies, avoiding subjective biases and inconsistent standards inherent in manual qualitative judgments. Furthermore, the assessment logic closely aligns with the specific needs of prefabricated fire protection network construction. The three scoring dimensions precisely cover the core information support dimensions in fire protection network planning and simulation, directly addressing the core essence of critical fire protection-specific supporting information. Simultaneously, the dynamic adjustment of weighting coefficients allows the scoring rules to adapt to the differentiated needs of various construction scenarios, such as high-rise buildings, commercial complexes, and industrial plants. The synchronous dynamic adjustment of preset scoring values ​​ensures the rationality of the assessment thresholds under different scenarios, making information deficiency assessment more scenario-specific.

[0040] S400 involves extracting and parsing fire-specific multi-dimensional information for the target fire-fighting BIM unit in the full BIM of the fire-fighting pipeline network according to the fire-fighting BIM information completion instruction, updating the fire-fighting BIM multi-dimensional information, and then returning to the steps of performing prefabricated construction planning simulation of the fire-fighting pipeline network based on the planning requirement instruction and the fire-fighting BIM multi-dimensional information to generate a fire-fighting pipeline network construction planning reasoning scheme.

[0041] Understandably, in practice, this step needs to be strongly correlated with the information missing determination results of S300. The supplemented information must accurately correspond to the determined missing items. For example, if the determination is that the fire sealing parameter for pipelines crossing fire compartments is missing, then only the model unit information related to that parameter will be extracted, without involving other irrelevant data. After the information extraction is completed, the supplemented data will be integrated and updated with the original fire protection BIM multi-dimensional information. The update process follows the IFC universal exchange format standard, and a data update log is recorded, including update time, update content, data source, verification results, and other information. This step can be executed by directly extracting target unit parameters through the BIM model API interface, completing data standardization parsing through Python scripts, and achieving structured storage through database tools, which greatly improves the efficiency of information supplementation, so that the supplemented fire protection BIM multi-dimensional information can directly support the planning and simulation iteration of S200.

[0042] In one possible implementation, please refer to Figure 2 In step S400, the method for determining the target fire protection BIM unit includes: S410, acquire full BIM of fire protection pipeline network; the full BIM includes sprinkler network design BIM, fire hydrant network prefabrication BIM, fire pump room integrated module BIM, on-site measured point cloud BIM of building fire compartments, and collaborative BIM of fire protection pipeline network with other building pipelines.

[0043] It is understandable that BIM for sprinkler network design belongs to the fire protection professional design stage, including core design parameters such as pipe diameter, pipe material, sprinkler head model, installation spacing, most unfavorable point location, and pipeline slope; BIM for prefabricated fire hydrant network includes prefabricated component dimensions, interface specifications, connection methods, anti-corrosion treatment standards, and factory inspection parameters; BIM for integrated fire pump room modules covers pump body model, inlet and outlet dimensions, pipeline connection specifications, valve and instrument models, overall module dimensions, and installation reference points, serving as core data support for modular assembly of the pump room; BIM for on-site measured point clouds of building fire compartments can be obtained through 3D laser scanning technology, including on-site measured data such as building entity structural boundaries, actual fire compartment boundaries, reserved hole locations and size deviations, and actual locations of structural components; BIM for collaborative fire protection network with other building pipelines integrates pipeline data from HVAC, electrical, and water supply and drainage disciplines, including the routing, diameter, installation height, and spacing of each discipline's pipelines from the fire protection network, serving as a key basis for avoiding pipeline collisions and optimizing layout. The acquisition of full BIM data can be achieved through multi-terminal data synchronization via a BIM collaborative management platform.

[0044] S420 separates several independent original fire protection BIM units from the full BIM of the fire protection network according to the building fire protection zone, fire protection network type, fire pump room functional module, and on-site construction section.

[0045] It is understandable that when dividing a building by fire compartment, the fire protection pipe network within each fire compartment is treated as an independent unit according to the zoning boundaries of the "Code for Fire Protection Design of Buildings" (GB 50016-2014). For example, in a commercial complex, there is fire compartment 1 on the basement floor and fire compartment 2 on the ground floor. Each unit contains all the pipe network data for sprinklers, fire hydrants, etc., within that compartment. When dividing by fire protection pipe network type, pipe networks of different functional types, such as sprinkler networks, fire hydrant networks, and fire monitor networks, are divided into independent units. Each unit contains comprehensive data on the design, prefabrication, and installation of the corresponding pipe network. The division is also based on the functional modules of the fire pump room. When dividing the pump room into independent units such as pump group modules, valve group modules, instrument control modules, and pipeline connection modules, each unit contains data such as component parameters, connection relationships, and installation requirements of the corresponding module, adapting to the modular prefabrication and assembly construction mode of the pump room. When splitting by on-site construction sections, combined with the flow section division in the construction organization design, the fire protection pipeline network is divided into several units according to the construction sequence, such as underground pipeline construction section, high-rise pipeline construction section, pump room construction section, etc. Each unit contains pipeline data and on-site construction condition information of the corresponding construction section. Each original fire protection BIM unit after splitting is assigned a unique identification code, which contains key information such as zone, pipeline type, module type, and construction section. For example, "F1-SP-001" represents the first unit of the sprinkler network (SP) on the ground floor (F1).

[0046] S430: Select a model unit containing the fire-specific key support information required for the fire-fighting BIM information completion instruction from several original fire protection BIM units, and use it as the target fire protection BIM unit.

[0047] It is understandable that the core of this step is to achieve targeted filtering, that is, to accurately locate model units containing missing information, reduce invalid parsing of irrelevant units, and improve the efficiency of information completion. For example, fire protection features can be embedded in the planning requirement instructions and each original fire protection BIM unit. The fire protection model similarity matching value between each original fire protection BIM unit and the planning requirement instructions can be calculated. Then, based on each fire protection model similarity matching value, several relevant fire protection BIM units can be selected from several original fire protection BIM units. The fire protection model correlation evaluation value between each relevant fire protection BIM unit and the planning requirement instructions can be calculated. Subsequently, from several relevant fire protection BIM units, model units with corresponding fire protection model correlation evaluation values ​​higher than preset evaluation values ​​can be selected to obtain multiple candidate fire protection BIM units. Finally, from multiple candidate fire protection BIM units, model units containing fire protection-specific key support information required by the fire protection BIM information completion instructions can be selected as target fire protection BIM units. Alternatively, the process association logic of fire protection pipeline network prefabricated construction can be sorted out first, and an association rule library of information items-process links-model units can be established. For example, the fire protection sealing parameters of cross-fire compartment pipelines can be associated with the fire compartment boundary pipeline units corresponding to the pipeline laying process link, and the zone water supply pressure parameters can be associated with the high-zone sprinkler pipeline units corresponding to the pipeline hydraulic calculation process link, etc. During the screening process, the corresponding process steps and model unit types are first retrieved from the association rule base based on the information items in the fire protection BIM information completion instruction to lock in the potential range of original fire protection BIM units. Then, through process parameter correlation analysis, the process fit between the potential units and the completion instruction is calculated (such as whether the process parameters of the unit are consistent with the process conditions required by the completion instruction). Units with a process fit higher than a preset threshold (such as 85%) are included in the candidate range. Finally, the information integrity and compliance of the candidate units are verified to determine the target fire protection BIM unit, and so on, but not limited to these steps.

[0048] This setup, which splits the original units according to fire protection-specific rules, gives each unit clear functional attributes and construction relevance, significantly narrowing the subsequent screening scope and solving the industry pain points of complex full-volume BIM data and difficulty in locating key information; it also allows for targeted screening of target units to ensure that the extracted information accurately matches the requirements of the completion instructions, reducing interference from invalid data and improving the targeting and efficiency of information completion.

[0049] In one possible implementation, in step S430, a model unit containing the fire-specific key support information required for the fire-fighting BIM information completion instruction is selected from a plurality of original fire-fighting BIM units as the target fire-fighting BIM unit, including: S431, fire protection features are embedded in the planning requirement instructions and each original fire protection BIM unit, and the fire protection model similarity matching value between each original fire protection BIM unit and the planning requirement instructions is calculated. The calculation dimensions of the fire protection model similarity matching value include fire compartment adaptability, pipeline pressure compliance, and fire protection code compliance.

[0050] It is understandable that fire protection feature embedding representation transforms unstructured planning requirement instructions and original BIM units into structured feature vectors, facilitating subsequent mathematical calculations. For planning requirement instructions, core constraint features are extracted, such as building fire compartment area, pipeline design pressure, fire protection pipeline type, and assembly period. Each feature is converted into a quantified value. For example, fire compartment area is quantified as ≤500㎡=1, 500-1000㎡=2, >1000㎡=3; pipeline design pressure is quantified as ≤0.7MPa=1, 0.7-1.2MPa=2, >1.2MPa=3, forming a requirement feature vector with unified dimensions. For each original fire protection BIM unit, its corresponding fire protection-specific features are extracted, such as the area of ​​the fire compartment, the design pressure of the pipeline network, the fire resistance rating of the pipe material, and the installation spacing of the sprinkler heads. These features are also converted into quantitative values ​​to form a unit feature vector. The dimension of the feature vector is consistent with the requirement feature vector. Subsequently, when calculating the fire protection model similarity matching value, it strictly revolves around three core dimensions: fire compartment adaptability, pipeline pressure compliance, and fire protection code compliance. Each dimension is assigned a corresponding weight and calculation logic. Finally, a comprehensive matching value (ranging from 0 to 100 points) is obtained through weighted summation. The calculation logic for the fire compartment adaptability dimension is as follows: the degree of conformity between the characteristics (area, fire resistance rating, fire separation distance) of the fire compartment to which the unit belongs and the fire compartment indicators in the demand instructions. For example, if the area of ​​the fire compartment to which the unit belongs is 800㎡, and the area requirement of the fire compartment in the demand instructions is 500-1000㎡, then the matching score for this dimension is 80 points; if the fire resistance rating of the fire compartment to which the unit belongs is Class I, and the demand instructions require Class I, then the score for this dimension is 100 points. The final score for this dimension is calculated by weighting the weights of each indicator. The calculation logic for the pipeline pressure compliance dimension is as follows: the degree of deviation between the parameters such as the pipeline design pressure, test pressure, and head loss control value of the unit and the pressure requirements in the demand instructions. The smaller the deviation, the higher the score. For example, if the unit design pressure is 1.0MPa, and the demand instructions require 0.9-1.1MPa, the deviation is 0, then the score for this dimension is 100 points; if the deviation is 0.1MPa, the score is 80 points. The specific score is calculated linearly according to the deviation rate. The calculation logic for the fire protection compliance dimension is as follows: the degree of conformity of each parameter of the unit (pipe material selection, sprinkler spacing, pipeline layout) with the current national fire protection standards. For example, if the sprinkler installation spacing of the unit is 3.6m, which meets the limit requirement of 3.6m in the "Code for Design of Automatic Sprinkler Systems" (GB 50084-2017), then this indicator scores 100 points; if the spacing is 4.0m, exceeding the limit, then it scores 0 points. The score for this dimension is calculated based on the compliance rate of each standard indicator. The weights of the three dimensions can be dynamically adjusted according to the project type. For example, in super high-rise building projects, the weight of pipeline pressure compliance is 40%, fire compartment adaptability is 30%, and fire protection compliance is 30%; in commercial complex projects, the weight of fire compartment adaptability is 40%, and the other two are 30% each.

[0051] S432, based on the similarity matching value of each fire protection model, select several relevant fire protection BIM units from several original fire protection BIM units.

[0052] This step is understandably a coarse screening process following the calculation of fire protection model similarity matching values. Its core purpose is to quickly eliminate original units with extremely low relevance to planning requirements, narrowing the scope of subsequent fine screening and improving overall screening efficiency. For example, each fire protection model similarity matching value can be sorted from high to low to obtain a descending matching sequence. This descending matching sequence can then be fitted to a fire protection model similarity change curve. A baseline fitting line connecting the two endpoints of the fire protection model similarity change curve can be constructed. Based on the vertical distance between each feature point in the fire protection model similarity change curve and the baseline fitting line, the characteristic inflection point of a sharp drop in the fire protection model similarity matching value can be determined from the fire protection model similarity change curve. Finally, from several original fire protection BIM units, model units with fire protection model similarity matching values ​​higher than the fire protection model similarity matching value corresponding to the characteristic inflection point can be selected as relevant fire protection BIM units. Alternatively, K-means clustering can be used. The algorithm divides all original fire protection BIM units into three clusters—high, medium, and low—based on their similarity matching values. First, it determines the optimal number of clusters, K=3, based on the elbow rule. The algorithm automatically groups the units according to the distribution of matching values. The matching values ​​of units in high-association clusters are concentrated and significantly higher than those in other clusters. Then, it calculates the central matching value and intra-cluster variance of each cluster. High-association clusters must satisfy the following conditions: central matching value ≥ μ+σ and intra-cluster variance ≤ σ² / 2 (to ensure stable unit correlation within the cluster). Finally, all units in high-association clusters are directly identified as relevant fire protection BIM units. At the same time, units in medium-association clusters that completely match the fire protection feature labels (such as hydraulic parameters and fire compartments) of the completion instruction are included again, and so on, but not limited to these.

[0053] In one possible implementation, please refer to Figure 3 In step S432, based on the similarity matching value of each fire protection model, several relevant fire protection BIM units are selected from several original fire protection BIM units, including: S4321, sort the similarity matching values ​​of each fire protection model from high to low to obtain a descending matching sequence, and fit the descending matching sequence into a fire protection model similarity change curve.

[0054] It can be understood that generating the descending matching sequence involves arranging the similarity matching values ​​of all original fire protection BIM units in descending order, for example, unit A (95 points), unit B (92 points), unit C (88 points), ..., unit N (30 points), forming a one-dimensional ordered sequence. The sequence index is the unit number (1, 2, 3, ..., N), and the value is the corresponding matching value. During the sorting process, if multiple units have the same matching value, they are arranged according to the unit's identifier code order. Fitting the fire protection model similarity change curve transforms the descending matching sequence into a continuous mathematical curve, facilitating the analysis of the changing trend of the matching values. The fitting process employs a polynomial fitting algorithm. An appropriate polynomial order is selected based on the sequence's distribution characteristics; for example, a 3rd to 5th order polynomial can be used. The horizontal axis of the curve represents the unit number (representing the sorted unit order), and the vertical axis represents the similarity matching value (0-100 points). The fitted curve visually presents the changing trend of the matching values. For example, the matching values ​​decrease gradually in the first 10 units (highly correlated units are concentrated), while the matching values ​​decrease sharply after the 11th unit (lowly correlated units are concentrated), providing clear visual support for subsequent feature inflection points identification. During the fitting process, the goodness of fit (R²) is calculated, ensuring that R² ≥ 0.9, meaning the curve can explain more than 90% of the matching value changes. If the goodness of fit is lower than 0.9, the polynomial order is adjusted, or a piecewise fitting method is used.

[0055] S4322, construct a baseline fitting straight line connecting the two endpoints of the similarity change curve of the fire protection model.

[0056] It is understandable that the physical meaning of the baseline fitting line is that it assumes the matching value decreases uniformly according to a linear law, and its slope reflects the average rate of decrease of the matching value. For example, a slope of -1.3 means that for every additional unit number, the matching value decreases by an average of 1.3 points. By constructing this line, the similarity change curve can be compared with the line. If the vertical distance between a point on the curve and the line is large, it indicates that the matching value of the unit corresponding to that point deviates significantly from the average decreasing trend, which may be an inflection point of a sharp drop in the matching value. The construction process is as follows: First, determine the first and last endpoints of the fire protection model similarity change curve. The starting point is the coordinate (1, matching value 1) corresponding to the first unit in the sorting sequence, and the ending point is the coordinate (N, matching value 1) corresponding to the last unit in the sorting sequence. n For example, the starting point is (1, 95) and the ending point is (50, 30). Then, the mathematical expression for the reference fitted line is calculated based on the two-point form of the linear equation. The two-point linear equation is: Where x is the unit number and y is the matching value, by substituting the coordinates of the starting point and the ending point, the equation of the baseline fitted line can be obtained, for example, y = -1.3x + 96.3.

[0057] S4323, based on the vertical distance between each feature point in the fire model similarity change curve and the benchmark fitted line, determine the feature inflection point of the sudden drop in the fire model similarity matching value from the fire model similarity change curve.

[0058] It is understandable that the feature inflection point is the core boundary that distinguishes high-correlation units from low-correlation units. First, the perpendicular distance between each feature point and the baseline fitted line is calculated; the feature point is the coordinate of each unit in the descending matching sequence. The formula for calculating vertical distance is: Where a and b are the coefficients of the baseline fitted straight line equation y=ax+b. Let be the vertical distance from the i-th feature point to the line. A larger vertical distance indicates a greater deviation of the matching value corresponding to that feature point from the average downward trend, making it more likely to be an inflection point. To determine the feature inflection point, first calculate the mean (d_avg) and standard deviation (d_std) of the vertical distances of all feature points. Use d_avg + 2 × d_std as the abnormal deviation threshold, and filter out feature points with vertical distances greater than this threshold; these points are potential inflection points. If multiple potential inflection points exist, select the point with the largest vertical distance as the final feature inflection point, because the decrease in matching value corresponding to this point is the most significant, representing the clearest boundary between high and low correlation units. For example, if the calculated point with the largest vertical distance is the 12th unit, with a matching value of 65, while the matching values ​​of the first 11 units are all above 80, and the matching values ​​of the 13th unit and beyond are all below 60, then the point corresponding to the 12th unit is the feature inflection point, indicating that from the 12th unit onwards, the matching value enters the low correlation interval. If there are no feature points with a vertical distance greater than the abnormal deviation threshold, it indicates that the distribution of matching values ​​is relatively uniform and there are no significant sudden drops. In this case, the point corresponding to the matching value equal to the mean plus the standard deviation is taken as the inflection point.

[0059] S4324: From several original fire protection BIM units, select the model units whose fire protection model similarity matching value is higher than the fire protection model similarity matching value corresponding to the feature inflection point, and use them as relevant fire protection BIM units.

[0060] The feature inflection point is calculated by the vertical distance between the similarity change curve and the baseline fitted line. Its core characteristic is reflecting the point of maximum deviation of the matching value from the average downward trend. The baseline fitted line represents the ideal uniform downward trend of the matching value, while the point corresponding to the feature inflection point is the location where the deviation from this trend is most significant. Before this point, the matching value decreases gradually, indicating that the decay rate of unit correlation is slow and it remains in the high correlation range. After this point, the matching value decreases sharply, indicating that the decay rate of unit correlation accelerates dramatically, entering the low correlation range. Therefore, the matching value corresponding to the inflection point is the critical value distinguishing between high and low correlation. Units with a value higher than this are high-value units whose correlation has not significantly decayed, while units with a value lower than this are low-value units whose correlation has failed. The similarity matching value corresponding to the feature inflection point (denoted as y_k) is extracted. For example, if the matching value corresponding to the inflection point is 65 points, then all units in the original fire protection BIM units with matching values ​​higher than 65 points are selected. During the selection process, the matching values ​​of all original units need to be iterated and compared with y_k one by one. If a matching value equal to y_k exists, it will be included in the relevant fire protection BIM unit according to the rounding up principle.

[0061] This setup employs an adaptive filtering logic—descending sorting, curve fitting, baseline line construction, inflection point identification, and unit selection—relying on the objective data distribution characteristics of the fire protection model similarity change curve. By accurately identifying the natural boundary between highly correlated clusters and low-correlation units through feature inflection points, it ensures that the selected relevant fire protection BIM units are all core units with strong relevance to planning requirements and high information matching, without any low-correlation redundant units being mixed in. Furthermore, it can automatically adapt to the differences in matching value distribution of original fire protection BIM units in different projects, eliminating the need for manual adjustment of filtering parameters. While avoiding the omission of highly correlated units, it significantly reduces the range of units for subsequent fine-tuning, thereby significantly improving filtering efficiency and accuracy.

[0062] S433, calculate the fire protection model correlation assessment value between each relevant fire protection BIM unit and the planning requirement instructions.

[0063] It is understandable that the fire protection model relevance assessment value is a refined evaluation of the degree of correlation between relevant fire protection BIM units and planning requirements. Compared with the similarity matching value (coarse quantification) in S431, its assessment dimensions are more comprehensive and its calculation logic is more refined, enabling it to accurately distinguish the correlation strength between different units within related units. Firstly, based on the three core dimensions of the similarity matching value, two new dimensions, site adaptability and prefabrication connectivity, are added, forming five assessment dimensions. Among them, the site adaptability dimension focuses on the degree of fit between unit parameters and actual site conditions, such as whether the deviation between the unit's pipe network installation location and the structural deviation of the measured point cloud BIM is within the allowable range (generally ≤3mm), and whether the size of reserved holes matches the size of unit components; the prefabrication connectivity dimension focuses on the adaptability of unit parameters to factory-prefabricated components, such as whether the unit's interface specifications are consistent with the interface type of the prefabricated components, and whether the connection method meets the requirements of prefabrication assembly.

[0064] Each assessment dimension has detailed scoring rules and weights, with weights dynamically adjusted according to project type. For example, in industrial plant projects, fire safety compliance accounts for 30% of the weight, pipeline pressure compliance for 25%, on-site adaptability for 20%, prefabrication connection for 15%, and fire compartment adaptability for 10%. In high-rise building projects, pipeline pressure compliance accounts for 30% of the weight, on-site adaptability for 25%, fire safety compliance for 20%, prefabrication connection for 15%, and fire compartment adaptability for 10%. The scoring rules for each dimension are based on current fire safety codes and construction standards. For example, the fire safety compliance dimension is scored according to the mandatory and recommended clauses in national standards such as the "Technical Specification for Fire Water Supply and Fire Hydrant Systems" and the "Design Specification for Automatic Sprinkler Systems." Compliance with mandatory clauses earns full marks, compliance with recommended clauses earns 80 points, and non-compliance earns 0 points. The on-site adaptability dimension is scored based on the deviation rate: ≤1% earns 100 points, 1%-3% earns 80 points, 3%-5% earns 60 points, and >5% earns 0 points. The relevance assessment value is calculated using a weighted summation method, and the formula is as follows: , where R is the relevance assessment value (0-100 points). Weights for each dimension, Scoring is done for each dimension.

[0065] S434: From several relevant fire protection BIM units, select the model units whose corresponding fire protection model correlation evaluation value is higher than the preset evaluation value to obtain multiple candidate fire protection BIM units.

[0066] Understandably, the preset assessment value is the core threshold for distinguishing whether relevant units have the value for further screening. Its setting can be determined comprehensively by combining factors such as the project's fire safety compliance requirements, construction precision requirements, and the difficulty of prefabricated construction. First, the base value of the preset assessment value can be set at 70 points (that is, units with an assessment value ≥ 70 points are considered to be eligible for the candidate status). Then, it is dynamically adjusted according to the project type: for projects with extremely high requirements for fire safety compliance and construction precision, such as super high-rise buildings and large commercial complexes, the preset assessment value is adjusted to 80 points; for projects with relatively lower requirements, such as industrial plants and ordinary civil buildings, the preset assessment value is adjusted to 70 points; for projects with complex construction conditions, such as the renovation of old residential areas, the preset assessment value can be adjusted to 65 points, but it must not be lower than 60 points.

[0067] S435: Select the model unit containing the fire-specific key support information required for the fire-fighting BIM information completion instruction from multiple candidate fire-fighting BIM units, and use it as the target fire-fighting BIM unit.

[0068] It is understandable that the specific content, accuracy requirements, and regulatory basis of the key fire protection-specific supporting information required in the fire protection BIM information completion instruction are analyzed to form a detailed information requirement list. For example, if the completion instruction requires the addition of zoned water supply pressure parameters for the high-zone sprinkler network, the information requirement list includes: design working pressure (0.9-1.1MPa), test pressure (1.4MPa), head loss control value (≤0.05MPa / m), and zoned valve location parameters, with the regulatory basis being the requirements of the "Technical Specification for Fire Water Supply and Fire Hydrant Systems". Subsequently, for each candidate fire protection BIM unit, item-by-item retrieval and verification are performed based on the information requirement list. The retrieval method uses a combination of attribute tags and keywords. For example, in the BIM model, the design working pressure and test pressure parameters are retrieved using the attribute tag "zoned water supply pressure", and the valve location parameters are retrieved using the keyword "zoned valve". The verification process includes three levels: first, information integrity verification, checking whether the unit contains all information items in the list; if no items are missing, the verification passes. Second, information accuracy verification, checking whether the values ​​of each information item are within the range specified in the requirements list; for example, whether the design working pressure is between 0.9-1.1 MPa; a deviation of ≤5% passes the verification. Third, information compliance verification, checking whether each information item meets the specified fire protection code requirements; for example, whether the test pressure meets the code requirement of 1.4 MPa; if it does, the verification passes. If a candidate fire protection BIM unit passes all three levels of verification, it is designated as the target fire protection BIM unit.

[0069] This setup significantly improves screening efficiency by progressively narrowing the screening scope, from the original unit to related units and then to candidate units, ultimately focusing on the target unit. It also enhances the accuracy of screening results by verifying each item in the information list, from similarity matching values ​​to relevance evaluation values, and reducing misjudgments caused by single-dimensional evaluation. Whether a single unit meets the requirements or multiple units are needed, the screening mechanism can accurately pinpoint the target, improving the completeness and compliance of information completion.

[0070] In one possible implementation, candidate fire protection BIM units are categorized and stored in a fire protection network candidate BIM library. In step S435, model units containing the fire protection-specific key support information required for the fire protection BIM information completion instruction are selected from multiple candidate fire protection BIM units as target fire protection BIM units, including: S4351, if a first fire protection model unit containing the fire protection-specific key support information required for the fire protection BIM information completion instruction is retrieved from the preset fire protection network cache BIM library, then the first fire protection model unit is determined as the target fire protection BIM unit.

[0071] As we can understand it, the fire protection network cache BIM library is a database used to store frequently reused and highly standardized fire protection BIM units. The cache library is constructed following the principles of high-frequency reuse and standard adaptation. The stored units mainly include: standard network units for commonly used fire compartments (such as sprinkler network units for fire compartments under 500㎡), standard fire pump room integrated module units, and conventional fire hydrant network units. These units have high reuse rates in different projects, standardized information formats, and can quickly meet common information completion needs. Each unit in the cache library is categorized and tagged according to information type + unit type + applicable scenario, such as hydraulic parameters - sprinkler network - high-rise building high-rise area, fire sealing parameters - fire hydrant network - commercial complex, etc., facilitating rapid retrieval. The retrieval process can employ a combination of tag matching and keyword retrieval. First, based on the information type (e.g., hydraulic parameters, fire-stopping parameters) and applicable scenario (e.g., high-rise buildings) in the fire protection BIM information completion instruction, corresponding category tags in the cache are matched to narrow the search scope. Then, the attribute information of the unit is retrieved using keywords from the completion instruction (e.g., zoned water supply pressure, fire-stopping materials) to accurately locate the unit containing the required information. For example, if the completion instruction requires supplementing the zoned water supply pressure parameters of the high-rise building's sprinkler network, and the first fire protection model unit retrieved contains information such as a design working pressure of 1.0 MPa and a test pressure of 1.4 MPa, and meets the requirements of the "Technical Specification for Fire Water Supply and Fire Hydrant Systems," consistent with the pressure constraints in the planning requirement instruction, then the verification is successful, and the unit is directly identified as the target fire protection BIM unit.

[0072] S4352 If the first fire protection model unit is not found in the fire protection network cache BIM library, and a second fire protection model unit containing the fire protection-specific key support information required for the fire protection BIM information completion instruction is found in the fire protection network candidate BIM library, then the second fire protection model unit is determined as the target fire protection BIM unit, and the second fire protection model unit is synchronously stored in the fire protection network cache BIM library.

[0073] It is understandable that the fire protection network candidate BIM database is a database storing candidate fire protection BIM units formed after screening by S431-S434. The units stored in it are highly targeted and closely related to planning requirements, making them the core search objects after the cache database fails to retrieve the information. The storage structure of the candidate database is consistent with that of the cache database, and it is managed by classification and tagging according to information type + unit type + applicable scenario. The retrieval process also adopts a combination of "tag matching + keyword retrieval". First, based on the information type and applicable scenario of the completion instruction, the classification tags in the candidate database are matched. For example, if the completion instruction requires the addition of "pressure reducing device parameters of fire hydrant network in industrial plant", then the tag "pressure reducing device parameters - fire hydrant network - industrial plant" is matched. Then, the unit attribute information is retrieved by searching for keywords such as "pressure reducing device model" and "pressure reducing value" to locate the second fire protection model unit containing the required information.

[0074] The logic of synchronously storing to the cache is to optimize subsequent retrieval efficiency by converting the valid units retrieved this time into high-frequency reusable units, facilitating rapid retrieval for similar projects or similar completion needs in the future. During the storage process, firstly, standardized classification tags are added to the second fire protection model unit to ensure consistency with the tag system of existing units in the cache; then, it checks whether the same or highly similar units already exist in the cache. If not, they are stored directly; if they exist, the information of the original unit is updated to the latest version.

[0075] S4353 If no second fire protection model unit is found in the fire protection network candidate BIM database, then when replacing the planning requirement instruction with the fire protection BIM information completion instruction, the fire protection model similarity matching value and fire protection model correlation evaluation value corresponding to each original fire protection BIM unit are recalculated to update the fire protection network candidate BIM database, and the search steps for the target fire protection BIM unit are re-executed based on the updated fire protection network candidate BIM database.

[0076] Understandably, the core purpose of this step is to avoid situations where the completion instructions are too specific or unique, resulting in no matching units in the candidate library, thus ensuring the success rate of information completion and improving the robustness of the solution. After triggering the fallback mechanism, the original planning requirement instructions are first replaced with fire protection BIM information completion instructions as the new retrieval benchmark. This is because the completion instructions more accurately describe the type and requirements of the required information. Using this benchmark, the matching value and evaluation value are recalculated, which can more accurately locate the relevant units. The recalculation process requires re-execution of all steps S431-S434: fire protection feature embedding representation is performed on the completion instructions, and core features such as information type, accuracy requirements, and standard basis are extracted to form a new requirement feature vector; the similarity matching value between each original fire protection BIM unit and the new requirement feature vector is recalculated, while the evaluation dimensions and weights remain unchanged; relevant fire protection BIM units are re-selected based on the new matching values; the relevance evaluation value between relevant units and the new requirements is calculated, and the fire protection network candidate BIM library is updated. The updated candidate library focuses on the specific requirements of the completion instructions. For example, if the completion instruction requires the addition of "interface parameters of a certain special type of fire hydrant", the replacement and recalculation can accurately filter out units containing information of that special type of fire hydrant.

[0077] This setup allows the cache library to store frequently used units, enabling priority retrieval of effective data and reducing redundant filtering and calculations, making it particularly suitable for common information completion needs. The candidate library stores highly relevant units filtered through multiple dimensions, ensuring that search results accurately match completion requirements and reducing interference from irrelevant units. A fallback mechanism ensures that even with special or specific completion needs, the candidate library can be updated through recalculation, minimizing information completion failures and adapting to different scenarios. This solves the problems of low efficiency, insufficient accuracy, and lack of a fallback mechanism in traditional retrieval methods, improving the efficiency, accuracy, and completeness of information completion.

[0078] In one possible implementation, please refer to Figure 4 In step S400, according to the fire protection BIM information completion instruction, fire protection-specific multi-dimensional information extraction and parsing are performed on the target fire protection BIM unit in the full BIM of the fire protection network, including: S440 extracts geometric features, material parameters, assembly nodes, on-site deviation data, and multi-disciplinary pipeline collision parameters from the target fire protection BIM unit.

[0079] As can be understood, geometric feature extraction involves acquiring the spatial shape and location parameters of the target fire protection BIM unit, including pipe diameter (accurate to mm, such as DN50, DN80), pipe length (accurate to cm), pipe slope (accurate to per mille, such as 3‰), installation location coordinates (3D coordinates, accurate to mm, based on the unified coordinate system of the building's main BIM model), sprinkler installation spacing (accurate to cm), fire hydrant installation height (accurate to cm), and the length × width × height of the pump room integrated module (accurate to mm), etc. The extraction method involves directly reading the geometric attributes from the BIM model. For complex components (such as irregularly shaped pipes and combined valve groups), the cross-sectional analysis function of 3D modeling software is used to extract key geometric parameters.

[0080] Material parameter extraction involves obtaining material property parameters related to fire performance, including pipe type (e.g., hot-dip galvanized steel pipe, stainless steel pipe), pipe fire resistance rating (e.g., Class A, Class B, according to GB8624-2012 "Classification of Burning Performance of Building Materials and Products"), pipe compressive strength (accurate to MPa), anti-corrosion treatment standard (e.g., internal and external hot-dip galvanizing, epoxy coating), and sealing material type (e.g., rubber sealing rings, PTFE gaskets). Extraction is performed by searching the material attribute tags in the BIM model and verifying them against the material qualification certificates provided by the factory.

[0081] Assembly node extraction is crucial for obtaining key parameters related to component connections and installation. These parameters include interface type (e.g., flange connection, clamp connection, threaded connection), interface specifications (e.g., DN50 flange, DN80 clamp), bolt type and quantity, sealing requirements (e.g., pressure resistance rating, waterproof rating), support type and installation spacing (e.g., sliding supports, fixed supports, with spacing conforming to the "Technical Specification for Fire Water Supply and Fire Hydrant Systems"), and pump room module docking reference points. Extraction is achieved through node details and assembly attribute searches in the BIM model. For complex nodes (e.g., pipeline branch nodes, valve group connection nodes), extraction can be aided by combining 2D construction drawings.

[0082] On-site deviation data extraction involves obtaining deviation parameters between the target unit and actual on-site conditions. This includes horizontal and vertical deviations (accurate to mm) between the designed pipeline location and the measured point cloud BIM, deviations (accurate to mm) between the dimensions of prefabricated components and the dimensions of pre-reserved holes on-site, and deviations between the installation locations of supports and hangers and the on-site structural components. The extraction method involves registering and comparing the target fire protection BIM unit with the measured point cloud BIM of the building's fire compartments, and then calculating the deviation values ​​using point cloud analysis software.

[0083] Multi-disciplinary pipeline collision parameter extraction involves obtaining spatial interference parameters between the target unit and other professional pipelines, including the minimum distance (accurate to mm) with HVAC pipelines, the minimum distance (accurate to mm) with electrical pipelines, the 3D coordinates of the collision point, and the diameter and material of the colliding pipelines. The extraction method involves collaborative BIM collision detection between the target fire protection BIM unit and the fire protection network with other building pipelines. Collision parameters can be automatically identified using pipeline integration optimization software.

[0084] S450 standardizes and parses the extracted information and stores it in a structured manner to form supplementary data for multi-dimensional BIM information.

[0085] It is understandable that the standardized analysis process follows the "BIM Application Standard for Building and Municipal Engineering" (GB / T 51235-2017) and IFC (Industry Foundation). The Classes general data exchange format requires unified format conversion for different types of extracted information: For numerical parameters (such as pipe diameter, pressure, and deviation values), decimal numbers are uniformly used, retaining a specified number of decimal places (geometric parameters retain 1 decimal place, pressure parameters retain 2 decimal places, and deviation values ​​retain 2 decimal places). For example, pipe diameter "DN50" is standardized as "50.0mm", and design pressure "1.0MPa" is standardized as "1.00MPa". For categorized parameters (such as pipe type and interface type), standardized terminology from national or industry standards is uniformly used. For example, "hot-dip galvanized steel pipe" is uniformly standardized as "hot-dip galvanized seamless steel pipe", and "flange connection" is uniformly standardized as "PN1.6MPa flange connection". For coordinate parameters (such as installation location coordinates), the unified coordinate system of the building's BIM model (such as the geodetic coordinate system) is uniformly used, and coordinate values ​​retain 3 decimal places, for example, "X=123.456m, Y=789.012m, Z=10.345m".

[0086] The structured storage process employs a categorized storage + index association approach to construct a data structure consistent with the existing fire protection BIM multi-dimensional information. First, supplementary data is categorized into five main types based on information type: geometric feature library, material parameter library, assembly node library, site deviation library, and multi-disciplinary clash library. Each library is indexed using "target unit identifier code + information item name." For example, in the geometric feature library, the index "F1-SP-001-pipe diameter" corresponds to the pipe diameter parameter of unit F1-SP-001. Second, the supplementary data is associated with the existing fire protection BIM multi-dimensional information. Through the identifier code of the target unit, the supplementary data is embedded into the original data structure. For example, extracted site deviation data is associated with the geometric feature data of the original unit, forming a complete data chain of design parameters and site deviations. The storage location is the database of the BIM collaborative management platform, using a distributed storage method. During storage, version identifiers and timestamps can be added to the supplementary data.

[0087] This setup, by selectively extracting core fire-specific information such as geometric features and material parameters from target fire protection BIM units and performing standardized analysis and structured storage, achieves precise capture of key fire protection-specific supporting information. It covers the core data dimensions required for fire protection network assembly construction planning, ensuring that the supplementary data is highly compatible with fire protection specifications, actual on-site construction, and prefabrication needs, effectively filling the gaps in the original BIM's multi-dimensional information. Furthermore, by standardizing data format and organizing the data system through standardized analysis, it ensures compatibility and interoperability between the supplementary data and the original BIM information, directly supporting subsequent construction planning and iteration.

[0088] S500: When the generated fire protection pipeline construction planning reasoning scheme is determined to be free of fire protection-specific key supporting information, the fire protection pipeline construction planning reasoning scheme will be output as the final fire protection pipeline prefabricated construction planning scheme.

[0089] It is understandable that the final prefabricated construction plan for the fire protection piping network is a comprehensive solution integrating multiple forms and dimensions. Its components include four core parts: First, a BIM 3D visualization model (LOD500 level), which includes the final layout of the fire protection piping network, the precise installation positions of prefabricated components, the coordination relationships between various professional pipelines, adjustment plans for on-site deviations, and detailed layout of supports and hangers. This model can intuitively present the overall construction situation and support construction personnel in conducting visual technical briefings. Second, two-dimensional construction drawings, including pipe network plan and section views, detailed component processing drawings, node assembly drawings, and support and hanger installation drawings. These drawings clearly indicate dimensions, materials, connection methods, and construction process requirements, conforming to the "Standard for Architectural Engineering Drawings" (GB / T). According to the requirements of 50105-2010, it can be directly used for factory prefabrication and on-site construction; third, a written explanatory report, including the complete process of planning and deduction, detailed records of information supplementation, the basis and results of scheme optimization and adjustment, key points of quality control, safety construction requirements, fire protection acceptance standards, etc., to provide comprehensive technical guidance for construction and supervision; fourth, a quantitative parameter table, covering pipeline pressure parameters, assembly accuracy parameters, construction period node parameters, prefabricated component list, material usage list, etc., all parameters are quantified to specific values, such as pipeline working pressure 1.00MPa, assembly accuracy ±2mm, pump room module prefabrication period 15 days, etc., to provide quantitative basis for cost accounting, progress control, and quality acceptance.

[0090] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0091] Corresponding to the BIM-based prefabricated construction planning method for fire protection pipeline networks described in the above embodiments, this application also provides a BIM-based prefabricated construction planning system for fire protection pipeline networks. Each module of this system can realize each step of the BIM-based prefabricated construction planning method for fire protection pipeline networks. Figure 5 The diagram shows a structural block diagram of a BIM-based prefabricated construction planning system for fire protection pipeline networks provided in an embodiment of this application. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0092] Reference Figure 5 The BIM-based prefabricated construction planning system for fire protection piping networks includes: The acquisition module is used to acquire planning requirements instructions and fire protection BIM multi-dimensional information for the prefabricated construction of fire protection pipe networks. The planning requirements instructions include fire protection pipe network type parameters, building fire compartment indicators, pipe network design pressure requirements and fire protection assembly period standards. The fire protection BIM multi-dimensional information includes at least one of the following: sprinkler network design parameters, fire hydrant network layout information, and initial parameters for the prefabrication of fire pump room components.

[0093] The planning module is used to perform prefabricated construction planning simulations of fire protection pipe networks based on planning requirements and multi-dimensional information from fire protection BIM, and to generate fire protection pipe network construction planning reasoning schemes.

[0094] The judgment module is used to determine the lack of fire-specific key supporting information in the construction planning and reasoning scheme of fire protection pipeline network, and to generate fire protection BIM information completion instructions when the planning and reasoning process is found to lack fire-specific key supporting information.

[0095] The update module is used to extract and parse fire-specific multi-dimensional information from the target fire-fighting BIM unit in the full BIM of the fire-fighting pipeline network according to the fire-fighting BIM information completion instruction, update the fire-fighting BIM multi-dimensional information, and then return to the steps of performing fire-fighting pipeline network prefabricated construction planning simulation based on planning requirements and fire-fighting BIM multi-dimensional information to generate fire-fighting pipeline network construction planning reasoning scheme.

[0096] It should be noted that the information interaction and execution process between the above modules are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0097] Those skilled in the art will understand that, for the sake of convenience and brevity, the above-described module division is merely an example. In practical applications, the above functions can be assigned to different modules as needed, that is, the internal structure of the system can be divided into different modules to complete all or part of the functions described above. The modules in the embodiments can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0098] This application also provides an electronic device. Figure 6 This is a schematic diagram of the structure of an electronic device 6 provided in an embodiment of this application. Figure 6 As shown, the electronic device 6 of this embodiment includes: at least one processor 60 ( Figure 6 Only one is shown in the image), at least one memory 61 ( Figure 6 (Only one is shown in the image) and a computer program 62 stored in the at least one memory 61 and executable on the at least one processor 60. When the processor 60 executes the computer program 62, it causes the electronic device 6 to perform the steps in any of the above embodiments of the BIM-based fire protection network prefabricated construction planning method, or causes the electronic device 6 to perform the functions of each module in the above system embodiments.

[0099] For example, the computer program 62 may be divided into one or more modules / units, which are stored in the memory 61 and executed by the processor 60 to complete this application. The one or more modules / units may be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program 62 in the electronic device 6.

[0100] The electronic device 6 can be a desktop computer, laptop, handheld computer, cloud server, or other computing device. The electronic device 6 may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of electronic device 6 and does not constitute a limitation on electronic device 6. It may include more or fewer components than shown, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, buses, etc.

[0101] The processor 60 can be a Central Processing Unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0102] In some embodiments, the memory 61 may be an internal storage unit of the electronic device 6, such as a hard disk or memory of the electronic device 6. In other embodiments, the memory 61 may be an external storage device of the electronic device 6, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the electronic device 6. Furthermore, the memory 61 may include both internal and external storage units of the electronic device 6. The memory 61 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0103] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0104] This application provides a computer program product that, when run on an electronic device 6, causes the electronic device 6 to perform the steps in any of the above method embodiments.

[0105] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying the computer program code to the electronic device 6, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks.

[0106] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0107] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0108] In the embodiments provided in this application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the BIM-based fire protection network prefabricated construction planning system embodiments described above are merely illustrative. For instance, the module division is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0109] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0110] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A BIM-based prefabricated construction planning method for fire protection pipe networks, characterized in that, include: Obtain planning requirements instructions and fire protection BIM multi-dimensional information for the prefabricated construction of fire protection pipe networks; wherein, the planning requirements instructions include fire protection pipe network type parameters, building fire compartment indicators, pipe network design pressure requirements and fire protection assembly period standards, and the fire protection BIM multi-dimensional information includes at least one of the following: sprinkler pipe network design parameters, fire hydrant pipe network layout information, and fire pump room component prefabrication initial parameters; Based on the planning requirements and the multi-dimensional information of fire protection BIM, a prefabricated construction planning simulation of fire protection pipeline network is performed to generate a fire protection pipeline network construction planning reasoning scheme. The fire protection pipeline construction planning and reasoning scheme is judged to be missing key support information specific to fire protection, and a fire protection BIM information completion instruction is generated when the key support information specific to fire protection is determined to be missing in the planning and reasoning process. According to the fire protection BIM information completion instruction, the target fire protection BIM unit in the full BIM of the fire protection network is subjected to fire protection-specific multi-dimensional information extraction and parsing, the fire protection BIM multi-dimensional information is updated, and then the process returns to the step of performing fire protection network assembly construction planning simulation based on the planning requirement instruction and the fire protection BIM multi-dimensional information to generate a fire protection network construction planning reasoning scheme.

2. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 1, characterized in that, The method for determining the target fire protection BIM unit includes: Obtain the full BIM of the fire protection pipeline network; wherein, the full BIM includes the sprinkler network design BIM, the fire hydrant network prefabrication BIM, the fire pump room integrated module BIM, the on-site measured point cloud BIM of the building fire compartment, and the collaborative BIM of the fire protection pipeline network with other building pipelines. Based on building fire compartmentation, fire protection network type, fire pump room functional module, and on-site construction section, several independent original fire protection BIM units are extracted from the full BIM of the fire protection network. From the aforementioned original fire protection BIM units, select a model unit containing the fire protection-specific key support information required by the fire protection BIM information completion instruction, and use it as the target fire protection BIM unit.

3. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 2, characterized in that, The step of selecting a model unit containing the fire-specific key support information required by the fire-fighting BIM information completion instruction from the plurality of original fire-fighting BIM units as the target fire-fighting BIM unit includes: Fire protection features are embedded in the planning requirement instructions and each original fire protection BIM unit, and the fire protection model similarity matching value between each original fire protection BIM unit and the planning requirement instructions is calculated. The calculation dimensions of the fire protection model similarity matching value include fire compartment adaptability, pipeline pressure compliance, and fire protection code compliance. Based on the similarity matching value of each fire protection model, a number of related fire protection BIM units are selected from the original fire protection BIM units. Calculate the fire protection model correlation evaluation value between each of the relevant fire protection BIM units and the planning requirement instructions; From the aforementioned related fire protection BIM units, select the model units whose fire protection model correlation evaluation value is higher than the preset evaluation value to obtain multiple candidate fire protection BIM units; From the multiple candidate fire protection BIM units, a model unit containing the fire protection-specific key support information required by the fire protection BIM information completion instruction is selected as the target fire protection BIM unit.

4. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 3, characterized in that, The step of selecting several relevant fire protection BIM units from several original fire protection BIM units based on the similarity matching value of each fire protection model includes: The similarity matching values ​​of each fire model are sorted from high to low to obtain a descending matching sequence, and the descending matching sequence is fitted into a fire model similarity change curve. Construct a baseline fitting straight line connecting the two endpoints of the similarity change curve of the fire protection model; Based on the vertical distance between each feature point in the fire model similarity change curve and the benchmark fitted line, the feature inflection point of the sudden drop in the fire model similarity matching value is determined from the fire model similarity change curve; From a number of original fire protection BIM units, select the model unit whose fire protection model similarity matching value is higher than the fire protection model similarity matching value corresponding to the feature inflection point, and use it as the relevant fire protection BIM unit.

5. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 3, characterized in that, The candidate fire protection BIM units are categorized and stored in the fire protection network candidate BIM library; the step of selecting a model unit containing the fire protection-specific key support information required by the fire protection BIM information completion instruction from among the multiple candidate fire protection BIM units as the target fire protection BIM unit includes: If a first fire protection model unit containing the fire protection-specific key support information required by the fire protection BIM information completion instruction is retrieved from the preset fire protection network cache BIM library, then the first fire protection model unit is determined as the target fire protection BIM unit; If the first fire protection model unit is not found in the fire protection network cache BIM library, and a second fire protection model unit containing the fire protection-specific key support information required by the fire protection BIM information completion instruction is found in the fire protection network candidate BIM library, then the second fire protection model unit is determined as the target fire protection BIM unit, and the second fire protection model unit is synchronously stored in the fire protection network cache BIM library.

6. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 5, characterized in that, Also includes: If the second fire protection model unit is not found in the fire protection network candidate BIM library, then when the planning requirement instruction is replaced by the fire protection BIM information completion instruction, the fire protection model similarity matching value and the fire protection model relevance evaluation value corresponding to each original fire protection BIM unit are recalculated to update the fire protection network candidate BIM library, and the retrieval step of the target fire protection BIM unit is re-executed based on the updated fire protection network candidate BIM library.

7. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 1, characterized in that, The determination of missing key supporting information specific to fire protection in the reasoning scheme for the construction planning of the fire protection pipeline network includes: According to the preset scoring rules for the fire protection pipeline construction planning scheme, the fire protection pipeline construction planning scheme is comprehensively scored from three dimensions: completeness of fire protection parameters, adaptability to fire protection scenarios, and compliance of fire protection assembly precision. The comprehensive score of the fire protection planning scheme is obtained. Among them, the completeness of fire protection parameters includes the completeness of pipeline pressure parameters and fire resistance rating parameters of pipe materials; the adaptability to fire protection scenarios includes the adaptability of pipeline layout across fire protection zones and fireproof sealing node design; and the compliance of fire protection assembly precision includes the compliance of sprinkler head installation spacing, fire hydrant main pipe connection, and pump room integrated module assembly precision. If the overall score of the fire protection planning scheme is lower than the preset score, it is determined that the planning and simulation process of the prefabricated construction of the fire protection pipeline network lacks key supporting information specific to fire protection; otherwise, it is determined that the planning and simulation process does not lack key supporting information specific to fire protection.

8. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 7, characterized in that, The preset planning scheme scoring rules are as follows: weight coefficients are set for parameter completeness, scenario adaptability, and accuracy compliance, the sum of the weight coefficients of each dimension is 1, and the weight coefficients are dynamically adjusted according to the scenario type of fire pipeline network assembly construction. The comprehensive score value of the scheme is calculated by weighted summation.

9. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 1, characterized in that, The step of extracting and parsing fire-specific multi-dimensional information for the target fire-fighting BIM unit in the full BIM of the fire-fighting network according to the fire-fighting BIM information completion instruction includes: Geometric features, material parameters, assembly nodes, on-site deviation data, and multi-disciplinary pipeline collision parameters are extracted from the target fire protection BIM unit. The extracted information is standardized, parsed, and stored in a structured manner to form supplementary data for the multi-dimensional BIM information.

10. The BIM-based prefabricated construction planning method for fire protection pipeline networks as described in claim 1, characterized in that, When the generated fire protection pipeline construction planning reasoning scheme is determined to be free of missing key fire protection-specific supporting information, the fire protection pipeline construction planning reasoning scheme is output as the final fire protection pipeline prefabricated construction planning scheme.

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