Decoration engineering prefabricated part traceability management method and system based on BIM

Abstract

The invention discloses a BIM-based decoration engineering prefabricated part traceability management method and system, and relates to the technical field of constructional engineering informatization management, and the method comprises the steps: building a time plan data set DS in a BIM platform, carrying out the associated storage with a component number i as a main key, and forming a component time feature set; and calculating a time deviation index I based on the component time feature set, and performing hierarchical comparison according to the time deviation index I to generate a consistency result set Res. Therefore, component-level time consistency quantitative evaluation of'planned time window, allowable deviation and actual installation time 'of each decoration engineering prefabricated component is realized, and compared with a mode of recording an installation completion state only in a BIM model or simply recording the installation time in the prior art, the method has the advantages that the installation completion state is more accurate; and the time consistency qualified component, the time mild dislocation component and the time serious dislocation component can be accurately identified.

Description

Technical Field

[0001] This invention relates to the field of information management technology for building engineering, specifically to a method and system for traceability management of prefabricated components in decoration engineering based on BIM. Background Technology

[0002] With the widespread application of prefabricated and high-end interior decoration technologies in public buildings, rail transit hubs, airport terminals, and other projects, prefabricated wall panels, prefabricated ceiling components, and prefabricated metal decorative panels are used extensively in decoration projects. To accurately track the source, installation, and maintenance information of these prefabricated components throughout their entire lifecycle, projects commonly utilize BIM platforms, QR code scanning devices, and traceability management systems for coded management and information recording of these components.

[0003] Currently, the traceability management of prefabricated components in decoration projects mainly revolves around the basic attribute information of the components and the installation status, such as component number, manufacturer, processing batch, arrival time, installation team, and installation completion time. Most projects only record the "installed" status by scanning a code upon completion, or mark the progress status as "installed" or "not installed" in the BIM model. Progress control typically relies on independent scheduling software or manually maintained Gantt charts, lacking a unified timeline expression and deep binding for component-level installation time windows, planned construction sequence, and actual on-site construction pace. While this approach can play a certain role in static information traceability, it is difficult to promptly identify time consistency issues such as whether prefabricated components in decoration projects are installed sequentially within the planned time window, or whether there are instances of premature or delayed installation.

[0004] The reasons for these problems lie in the fact that, in the practice of decoration engineering construction, especially in scenarios with tight schedules, numerous overlapping operations, and frequent nighttime rapid installation, construction teams often engage in behaviors such as rushing to meet deadlines and overlapping construction. This results in some prefabricated components of the decoration project being installed prematurely in spaces where conditions are not yet met, or being forced to be installed late due to delays in previous procedures, thus completing the construction outside the design time window. Because existing traceability management only records the installation completion time or completion status, it lacks a mechanism for comparing the design time window with the actual installation time, and also lacks statistical and control logic for time deviations on a construction area basis. The aforementioned time misalignment phenomenon often remains at the level of on-site experience, making it difficult to form calculable and traceable timeline consistency verification data. Once the time misalignment accumulates to a certain extent, it can easily lead to abnormal effects such as rework of decoration component disassembly and assembly, hidden quality hazards, conflicts with the installation of electromechanical pipelines or equipment, congestion of construction passages, and disorder of subsequent decoration sequences. When quality problems or operational obstacles occur, managers find it difficult to deduce from the traceability data when and how the specific components disrupted the construction sequence, and the division of responsibilities and subsequent optimization of solutions lack effective support from a time dimension. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a BIM-based method and system for the traceability management of prefabricated components in decorative engineering, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution, comprising the following steps: S1. Establish a time plan dataset DS for prefabricated components of the decoration project in the BIM platform, and store the time plan dataset DS of each prefabricated decoration component according to the component number i of the prefabricated decoration component. S2. At the construction site, use a mobile terminal scanning device to scan the prefabricated decorative components after installation. The traceability management server receives the scanning timestamp as the actual installation time of the component (Tact) and combines it with the time plan dataset (DS) to form a set of component time features. S3. Based on the time feature set of components, calculate the time deviation index I in the traceability management server, and then compare the output results of the time deviation index I. At the same time, generate a construction consistency result set Res based on the time deviation index I of each prefabricated decorative component. S4. Aggregate the consistent result set Res according to the construction area number B, and perform regional-level calculation on the time deviation index I in the same construction area number B to obtain the time control index R, and compare to trigger the corresponding control state.

[0007] Preferably, S1 includes S11; S11. In the BIM model of the BIM platform, the component number i and construction area number B of each prefabricated component of the decoration project are automatically read through the attribute table of prefabricated components of the decoration project, and the planned installation time Tplan corresponding to the component number i of each prefabricated component of the decoration project is read from the construction schedule associated with the BIM model. i And the allowable time deviation Ttol for component number i i ; The extracted component number i, construction area number B, and planned installation time Tplan for component number i are used to determine the component number i. i And the allowable time deviation Ttol for component number i i The data is summarized and combined with the extended fields of the construction task number field, construction stage identifier field, and construction team identifier field to form a time plan dataset DS that stores all time plan information of prefabricated decorative components. Then, a time plan data table is created in the project database of the BIM platform, and the time plan dataset DS is stored in the time plan data table.

[0008] Preferably, S1 further includes S12; S12. During the storage process, the component number i of the prefabricated components of the decoration project in the time plan dataset DS is associated with the storage. The associated storage uses the component number i of the prefabricated decorative component as the primary key index in the time plan dataset DS, and links the construction area number B corresponding to component number i and the planned installation time Tplan of component number i. i And the allowable time deviation Ttol for component number i i Combined with the extended field of the corresponding component number i, it is divided into the time plan dataset DS of the corresponding component number i. The time plan dataset DS is stored in the project database of the BIM platform in ascending order according to the component number i.

[0009] Preferably, S2 includes S21; S21. At the construction site, each precast decorative component is equipped with a machine-readable coded identifier carrying component number i information. The mobile terminal scanning device is equipped with an installation completion scanning application. The scanning interface of the installation completion scanning application is used to display the information display area of ​​component number i and construction area number B, as well as an editable input control for inputting the reason for installation completion deviation. After the construction workers complete the installation of the prefabricated decorative components, they use a mobile terminal scanning device to call the installation completion scanning function at the actual installation location of the prefabricated decorative components. The device scans and identifies the preset machine-readable code on the prefabricated decorative components. The mobile terminal scanning device decodes the code to obtain the component number i and the construction area number B, and generates a scanning timestamp with the current system time of the mobile terminal scanning device. The component number i, the construction area number B, and the scanning timestamp are then encapsulated into an installation completion scanning data message. The data is sent to the traceability management server via wireless network. After receiving the installation completion scan data message, the traceability management server generates the actual installation time (Tact) of component number i based on its own system time. i And the actual installation time of component number i, Tact i The component number i and the construction area number B are associated and stored together; The traceability management server connects to the project database of the BIM platform through a dedicated data interface, enabling the traceability management server to access the time plan dataset DS in the BIM platform.

[0010] Preferably, S2 further includes S22; S22, The traceability management server generates the actual installation time (Tact) of component number i. i Next, using component number i as an index, the time plan dataset DS corresponding to component number i is retrieved from the BIM platform, and the component number i, construction area number B, and planned installation time Tplan of component number i are read from the time plan dataset DS. i And the allowable time deviation Ttol for component number i i The actual installation time of component number i (Tact) i Assemble the components into a time feature vector record according to the preset field order, and then summarize the time feature vector records corresponding to each component number i to construct a component time feature set. The component time feature set is then written into the component time feature data table in the project database. The component time feature data table serves as the storage structure for the component time feature set, with the component number i as the association key between the component time feature set and the time plan dataset DS.

[0011] Preferably, S3 includes S31; S31. The traceability management server reads the actual installation time (Tact) of component number i from the component time feature set. i The planned installation time Tplan for component number i i The allowable time deviation Ttol for component number ii ; The traceability management server calculates the actual installation time (Tact) of component number i. i Planned installation time Tplan for component number i i The absolute value of the time difference between the two is used to analyze the time deviation of the prefabricated decorative components, and then the time deviation is divided by the allowable time deviation Ttol of component number i. i The time deviation index I is obtained; The time deviation index I is calculated and output using the following algorithm formula; I i =|Tact i -Tplan i | / Ttol i Among them, I i The time deviation index represents component number i.

[0012] Preferably, S3 further includes S32; S32. The traceability management server outputs the time deviation index I of each prefabricated decorative component, performs hierarchical comparison, and obtains the corresponding time consistency comparison result for each prefabricated decorative component. Wherein, when the time deviation of component number i is from the exponent I i When the value is ≤1, the corresponding prefabricated decorative component is judged as a component that meets the time consistency requirements, and a green mark is generated at this time. When the time deviation of component number i is from the exponent I i When ∈ (1,2], the corresponding prefabricated decorative component is determined to be a component with slight time misalignment, and a yellow mark is generated at this time. When the time deviation of component number i is from the exponent I i When the value is greater than 2, the corresponding prefabricated decorative component is identified as a component with severe time misalignment, and a red mark is generated at this time; Meanwhile, in the BIM platform's display interface, different levels of prefabricated decorative components are displayed in color to form a time-staggered construction heat map; The time deviation index I of component number i, construction area number B, and component number i is also considered. i The results are sorted according to a preset field order to construct a consistency result set Res, which is then synchronously stored in the time consistency result table of the project database. The specific form of the consistency result set Res is as follows: Res = {Component number i, Construction area number B, Time deviation index of component number i I} i}

[0013] Preferably, S4 includes S41; S41. Calculate the percentage of time-consistent qualified components in the statistical consistency result set Res. When the percentage is ≥80%, no operation is performed. When the percentage is <80%, the regional layer trigger condition is triggered. The regional layer triggering condition involves reading all records from the consistency result set Res, grouping the records in Res according to the construction area number B, and grouping all records whose extended field is equal to the construction area number B into the component set of the same construction area number B. The number of prefabricated decorative components n within construction area number B is then counted. B ; Based on the time deviation index I contained in each record within the same construction area, a regional-level calculation is performed to output the time control index R; the time control index R is calculated and output using the following algorithm formula: In the formula, R B The time control index represents construction area B; min indicates the suppression of extreme deviations.

[0014] Preferably, S4 further includes S42; S42. A first time control threshold F1 and a second time control threshold F2 are preset, and the first time control threshold F1 is less than the second time control threshold F2; The time control index R for obtaining construction area number B. B Next, the time control index R for construction area B will be determined. B The data is compared sequentially with the first time control threshold F1 and the second time control threshold F2. The specific comparison details are as follows: When the time control index R of construction area number B B When the value is less than or equal to the first time control threshold F1, the construction area corresponding to construction area number B is marked as the first control state and a normal construction control instruction is generated; the normal construction control instruction does not perform any operation and the construction area with construction area number B is displayed in green in the BIM interface; When the time control index R of construction area number B B When ∈ (F1, F2], the construction area corresponding to construction area number B is marked as the second control state and a flow-limiting construction control command is generated. The flow-limiting construction control command limits the number of parallel components of new tasks in the construction area to 8, and sets the time deviation index I of component number i. i For prefabricated decorative components with a deviation value greater than 1, the construction team must fill in the reason for the deviation on the barcode scanning interface; When the time control index R of construction area number B B> When the second time control threshold F2 is reached, the construction area corresponding to construction area number B is marked as the third control state and a construction blockade control instruction is generated. The construction blockade control instruction freezes the installation completion scanning function of construction area number B, allowing only variance and rectification scanning. It can only be restored after the project manager unblocks it in the background.

[0015] The BIM-based traceability management system for prefabricated components in decoration engineering includes a traceability extraction module, a terminal extraction module, a deviation analysis module, and a traceability control module. The source tracing and extraction module establishes a time plan dataset DS for prefabricated decorative components in the BIM platform, and stores the time plan dataset DS for each prefabricated decorative component in association with the component number i of the prefabricated decorative component. The terminal extraction module scans the prefabricated decorative components that have been installed using a mobile terminal scanning device at the construction site. The traceability management server receives the scan timestamp as the actual installation time (Tact) of the component and combines it with the time plan dataset (DS) to form a set of component time features. The deviation analysis module calculates the time deviation index I in the traceability management server based on the time feature set of the components, and then compares the output results of the time deviation index I. At the same time, it generates a construction consistency result set Res based on the time deviation index I of each prefabricated decorative component. The traceability control module aggregates the consistent result set Res according to the construction area number B, and performs regional-level calculation on the time deviation index I in the same construction area number B to obtain the time control index R, and then compares and triggers the corresponding control state.

[0016] This invention provides a BIM-based method and system for the traceability management of prefabricated components in decorative engineering. It offers the following advantages: (1) This method establishes a time plan dataset DS in the BIM platform, and associates and stores the planned installation time Tplani, the allowable time deviation Ttoli, and the construction area number B with the component number i as the primary key. In the traceability management server, the time plan dataset DS is combined with the actual installation time Tacti of the component collected by on-site scanning to form a component time feature set. Then, the time deviation index Ii is calculated based on the component time feature set, and the time deviation index Ii is used for hierarchical comparison to generate a consistency result set Res. Thus, the "planned time window, allowable deviation, and actual installation time" of each prefabricated component of the decoration project are quantitatively evaluated at the component level. Compared with the existing technology that only records the installation completion status or simply records the installation time in the BIM model, this method can accurately identify components with qualified time consistency, components with slight time misalignment, and components with serious time misalignment, and form a heat map of time misalignment components in the BIM interface, providing fine-grained and calculable time deviation data support for subsequent quality traceability and responsibility division.

[0017] (2) After obtaining the consistency result set Res, this method first counts the proportion of time-consistent qualified components. When the proportion is lower than the preset ratio, the regional trigger condition is triggered. Then, the consistency result set Res is aggregated according to the construction area number B. The time deviation index I in the same construction area number B is calculated at the regional level to obtain the construction area time control index RB. The construction area time control index RB is compared with the preset first time control threshold F1 and second time control threshold F2. The construction area is automatically divided into three control states: normal construction, flow-limited construction, and closed construction. By comparing the time control index RB with F1 and F2, the automatic triggering and hierarchical control from "component time deviation" to "regional construction rhythm control strategy" is realized. When there are too many time-misaligned components and the regional construction order tends to be disordered, the number of new tasks in parallel can be limited in a timely manner, the deviation reason is required to be entered, and even the installation completion scanning behavior of the area can be frozen. This significantly reduces the probability of subsequent decoration sequence disorder, passage congestion and rework risk caused by the continuous accumulation of time misalignment, and improves the process control capability of the construction stage.

[0018] (3) This method integrates the time plan dataset DS, the component time feature set, the consistency result set Res, and the time control index R to construct a time axis consistency management link from the design time window, planned time, actual installation time, component time deviation index I, consistency result set Res, time control index R, and control command output. On the one hand, based on the time plan dataset DS and the time deviation index I, it realizes refined traceability of the time consistency of prefabricated components in decoration projects; on the other hand, based on the consistency result set Res and the time control index R, it realizes dynamic rhythm regulation and hardware-software linkage control at the construction area level, so that the traceability data is no longer limited to post-event accountability, but participates in real-time control decision-making during the construction process. Compared with the existing technology that only records the completion status of component installation or relies solely on manual experience to adjust the construction sequence, this invention can intervene in a timely manner through quantifiable time consistency indicators and regional time control strategies when the time misalignment problem of early or late installation of components occurs and begins to accumulate, thereby reducing hidden construction risks from the source and ensuring the orderliness of the construction sequence and the controllability of the overall quality of decoration projects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the steps of the BIM-based traceability management method for prefabricated components in decorative engineering according to the present invention. Figure 2 This is a schematic diagram of the BIM-based traceability management system for prefabricated components in decoration engineering according to the present invention. Figure 3 This is a sequence diagram showing the scanning and data interaction process after installation is complete. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] Please see Figure 1 This invention provides a BIM-based method for the traceability management of prefabricated components in decoration engineering. To achieve the above objectives, this invention employs the following technical solution, including the following steps: S1. Establish a time plan dataset DS for prefabricated components of the decoration project in the BIM platform, and store the time plan dataset DS of each prefabricated decoration component according to the component number i of the prefabricated decoration component. S2. At the construction site, use a mobile terminal scanning device to scan the prefabricated decorative components after installation. The traceability management server receives the scanning timestamp as the actual installation time of the component (Tact) and combines it with the time plan dataset (DS) to form a set of component time features. S3. Based on the time feature set of components, calculate the time deviation index I in the traceability management server, and then compare the output results of the time deviation index I. At the same time, generate a construction consistency result set Res based on the time deviation index I of each prefabricated decorative component. S4. Aggregate the consistent result set Res according to the construction area number B, and perform regional-level calculation on the time deviation index I in the same construction area number B to obtain the time control index R, and compare to trigger the corresponding control state.

[0022] In this embodiment, step S1 of the method establishes a time plan dataset DS in the BIM platform and stores it in association with the component number of the prefabricated decorative components. This is equivalent to first fixing the timeline benchmark of "when and in which area each component should be installed"; without this step, all subsequent judgments about "early" or "late" would become subjective feelings and could not be quantified. Step S2 uses a mobile terminal scanning device to collect the scanning timestamp when the component is installed as the actual installation time Tact, and combines it with the time plan dataset DS to form a component time feature set. This achieves the connection between "planned time" and "actual time" on the same data chain. For example, if the decorative panel on the same wall is planned to be installed from 22:00 to 24:00 that night, but is installed earlier at 15:00 in the afternoon, this misalignment will be accurately recorded instead of simply being marked as "installed". S3 calculates the time deviation index I based on the component time feature set in the traceability management server, and performs hierarchical comparison based on the output of the time deviation index I to generate a consistency result set Res. Essentially, this distinguishes between "it doesn't matter if it's installed a little earlier" and "it seriously disrupts the construction sequence": the larger the time deviation index I, the more likely the component is to conflict with the preceding and following processes. Res then solidifies this risk into a visualized and searchable data label. S4 then aggregates the consistency result set Res by construction area number B, performs regional-level calculation on the time deviation index I within the same area, obtains the time control index R, and triggers the corresponding control state. This not only focuses on a single component but also identifies "whether the overall rhythm of this entire passage has gone out of control." For example, if a large number of seriously deviated components appear consecutively in the same area of ​​an airport VIP passage, the time control index R will rise and automatically enter a flow restriction or closure state, which can promptly suppress the spread of rushed and disordered construction. This implementation process achieves a continuous closed loop from "component-level time deviation" to "regional construction rhythm control," effectively reducing rework, alterations, and overlapping work caused by early or late installation. Furthermore, it significantly improves the accuracy of traceability data and the timeliness of management decisions, shifting the timing of prefabricated components in decoration projects from post-construction tracking to real-time intervention and risk control during the construction process. Example 2

[0023] Please see Figure 1 Specifically: S1 includes S11; S11. In the BIM model of the BIM platform, the component number i and construction area number B of each prefabricated component of the decoration project are automatically read through the attribute table of prefabricated components of the decoration project, and the planned installation time Tplan corresponding to the component number i of each prefabricated component of the decoration project is read from the construction schedule associated with the BIM model. i And the allowable time deviation Ttol for component number ii ; The extracted component number i, construction area number B, and planned installation time Tplan for component number i are used to determine the component number i. i And the allowable time deviation Ttol for component number i i The data is summarized and combined with the extended fields of the construction task number field, construction stage identifier field, and construction team identifier field to form a time plan dataset DS that stores all time plan information of prefabricated decorative components. Then, a time plan data table is created in the project database of the BIM platform, and the time plan dataset DS is stored in the time plan data table.

[0024] S1 also includes S12; S12. During the storage process, the component number i of the prefabricated components of the decoration project in the time plan dataset DS is associated with the storage. The associated storage uses the component number i of the prefabricated decorative component as the primary key index in the time plan dataset DS, and links the construction area number B corresponding to component number i and the planned installation time Tplan of component number i. i And the allowable time deviation Ttol for component number i i Combined with the extended field of the corresponding component number i, it is divided into the time plan dataset DS of the corresponding component number i. The time plan dataset DS is stored in the project database of the BIM platform in ascending order according to the component number i.

[0025] In this embodiment, the core purpose of S1 in this method, through S11 and S12, is to first establish a standardized record of the time schedule information for each prefabricated decorative component within the BIM platform, ensuring that the information is not easily confused. S11 first automatically reads the component number i and construction area number B from the prefabricated component attribute table for the decorative project. Then, it precisely extracts the planned installation time Tplan and allowable time deviation Ttol corresponding to component number i from the construction schedule plan, and centrally writes them into the time schedule dataset DS along with extended fields such as construction task number, construction stage identifier, and construction team identifier. The real physical meaning of this is that there is a complete time requirement chain for each component, specifying who should install it, at what stage, in what area, and within what time window, rather than it being scattered across multiple systems and tables. S12 further uses component number i as the primary key index in the storage structure, and integrates the construction area number B and the planned installation time Tplan... The allowed time deviation Ttol and its extended fields are all attributed to the corresponding component number i, and stored in the project database in ascending order of component number i. This centralized and unique method of linking time schedule data by component number i avoids common problems such as "components with the same name having different numbers across regions" and "misaligned row numbers in the schedule table." For example, in the same project, if two regions use similar specifications of decorative panels, but the time schedule is not indexed by component number i, but managed by manual row numbers or batches, it is easy for the time schedule of region A to be mistakenly applied to components in region B, leading to a complete distortion of subsequent judgments on "early or late". Through the primary key association and sequential storage of component number i in this implementation method, whether calculating the time deviation index on the traceability management server or tracing the time schedule by component number on the construction site, it is possible to achieve accurate results with a single scan and without confusion during the search, thereby improving the accuracy and traceability of time schedule data from the source. Example 3

[0026] Please see Figure 1 and Figure 3 Specifically: S2 includes S21; S21. At the construction site, each precast decorative component is equipped with a machine-readable code label carrying component number i information. The mobile terminal scanning device is equipped with a scanning application that has been installed. The scanning interface of the scanning application is used to display the information display area of ​​component number i and construction area number B, as well as an editable input control for inputting the reason for installation deviation. After the construction workers complete the installation of the prefabricated decorative components, they use a mobile terminal scanning device to call the installation completion scanning function at the actual installation location of the prefabricated decorative components. The device scans and identifies the machine-readable code mark, decodes it to obtain the component number i and the construction area number B, and generates a scanning timestamp with the current system time of the mobile terminal scanning device. The component number i, the construction area number B, and the scanning timestamp are then encapsulated into an installation completion scanning data message. The data is sent to the traceability management server via wireless network. After receiving the installation completion scan data message, the traceability management server generates the actual installation time (Tact) of component number i based on its own system time. i And the actual installation time of component number i, Tact i It is associated and stored with component number i and construction area number B; The traceability management server connects to the project database of the BIM platform through a dedicated data interface, enabling it to access the time plan dataset DS in the BIM platform.

[0027] S2 also includes S22; S22, The traceability management server generates the actual installation time (Tact) of component number i. i Next, using component number i as an index, the time plan dataset DS corresponding to component number i is retrieved from the BIM platform, and the component number i, construction area number B, and planned installation time Tplan of component number i are read from the time plan dataset DS. i And the allowable time deviation Ttol for component number i i The actual installation time of component number i (Tact) i Assemble the components into a time feature vector record according to the preset field order, and then summarize the time feature vector records corresponding to each component number i to construct a component time feature set. The component time feature set is then written into the component time feature data table in the project database. The component time feature data table serves as the storage structure for the component time feature set. The component number i is used as the association key between the component time feature set and the time plan dataset DS, thereby realizing the combined storage of the time plan data and the actual installation time data for each prefabricated decorative component.

[0028] In this embodiment, the core of method S2, through the design of S21 and S22, is to accurately lock down the actual installation behavior at the "moment on site" and immediately connect it with the front-end time plan data. In S21, each prefabricated decorative component has a machine-readable code with component number i. Construction personnel must use a mobile terminal scanning device to call the installation completion scanning function at the actual installation location of the component to complete the registration. The purpose of this is to force the four elements of "person on site, component on site, correct location, and correct time" to occur simultaneously, avoiding serious deviations caused by construction personnel supplementing the installation time in the office afterward. When scanning the code, the current system time of the terminal is used to generate a scanning timestamp, and then the traceability management server generates the actual installation time Tact of the component based on its own time. This is equivalent to using two layers of time sources to cross-lock the installation time, reducing the risk of arbitrary tampering with the equipment time. At the same time, an editable input control is reserved for construction personnel to fill in the reasons for deviation, which can collect the on-site context such as "why it was late" and "why it was installed in advance" to form the decision-making reasons behind the time data. S22 then immediately retrieves Tplan and Ttol from the time plan dataset DS on the server side, using component number i as the index. These are then assembled with the previously obtained Tact to form a component time feature vector and summarized into a component time feature set. The true physical significance of this process is to bind the "plan" and "actual" within the same record, rather than scattering them across different systems and tables for manual comparison. For example, in a nighttime rapid installation scenario, if the component time feature set is not generated immediately upon completion of installation, it's easy for the plan to show that area A should be constructed that night, but actual installation is rushed in area B. Afterwards, it becomes impossible to accurately trace which batch of components or which time period disrupted the overall schedule. Through this implementation method, subsequent calculations of the time deviation index I and the creation of time misalignment heatmaps on the BIM interface can be based on this high-precision component time feature set, directly improving the authenticity of the time data, the reliability of the comparison, and the persuasiveness of time traceability. Example 4

[0029] Please see Figure 1 Specifically: S3 includes S31; S31. The traceability management server reads the actual installation time (Tact) of component number i from the component time feature set. i The planned installation time Tplan for component number i i The allowable time deviation Ttol for component number i i ; The traceability management server calculates the actual installation time (Tact) of component number i. i Planned installation time Tplan for component number i iThe absolute value of the time difference between the two is used to analyze the time deviation of the prefabricated decorative components, and then the time deviation is divided by the allowable time deviation Ttol of component number i. i The time deviation index I is obtained; The time deviation index I is calculated and output using the following algorithm formula; I i =|Tact i -Tplan i | / Ttol i Among them, I i Indicates the time deviation index of component number i; In project schedule management, the severity of deviation is often assessed by dividing the difference between the actual time and the planned time by the allowable deviation. This formula directly adopts this idea and is a component-level application of the existing "relative schedule deviation" formula.

[0030] S3 also includes S32; S32. The traceability management server outputs the time deviation index I of each prefabricated decorative component, performs hierarchical comparison, and obtains the corresponding time consistency comparison result for each prefabricated decorative component. Wherein, when the time deviation of component number i is from the exponent I i When the value is ≤1, the corresponding prefabricated decorative component is judged as a component that meets the time consistency requirements, and a green mark is generated at this time. When the time deviation of component number i is from the exponent I i When ∈ (1,2], the corresponding prefabricated decorative component is determined to be a component with slight time misalignment, and a yellow mark is generated at this time. When the time deviation of component number i is from the exponent I i When the value is greater than 2, the corresponding prefabricated decorative component is identified as a component with severe time misalignment, and a red mark is generated at this time; Meanwhile, in the BIM platform's display interface, different levels of prefabricated decorative components are displayed in color to form a time-staggered construction heat map; The time deviation index I of component number i, construction area number B, and component number i is also considered. i The data is sorted according to a preset field order, and a consistency result set Res is constructed. This set is then synchronously stored in the time consistency result table of the project database. The specific form of the consistency result set Res is as follows: Res = {Component number i, Construction area number B, Time deviation index of component number i I} i}

[0031] In this embodiment, step S3 of the method transforms the time deviation from an abstract concept into a directly observable and calculable control basis through steps S31 and S32. S31 first precisely extracts the actual installation time Tact, planned installation time Tplan, and allowable time deviation Ttol from the component time characteristic set. Using a relative deviation formula, the subjective description of being two hours late is quantified into a dimensionless time deviation index I. The real physical meaning is: being two hours late is a serious problem for a component with an allowable deviation of 1 hour, but may be completely acceptable for a component with an allowable deviation of 3 days. Dividing by Ttol differentiates the severity levels. S32 then uses the time deviation index Ii to classify and compare each prefabricated decorative component, classifying those with Ii ≤ 1, 1, and 1...<Ii≤2、Ii> 2. Using green, yellow, and red markers respectively, a heat map of time-displaced components is created on the BIM interface. Managers can immediately see "where there are sporadic deviations and where there are large areas of uncontrolled movement," without having to flip through tables in large amounts of time data. At the same time, the component number i, construction area number B, and time deviation index I are structured and written into the consistency result set Res, which is equivalent to generating a "time consistency check-up report" for each component. This can be used for the subsequent calculation of the regional time control index R, and can also directly trace back to which batch of components, in which area, and with what magnitude the deviation disrupted the construction rhythm when rework or sequence disorder occurs. This effectively avoids the previous management blind spot of "knowing that something is wrong, but not being able to explain how it got wrong or where it started." Example 5

[0032] Please see Figure 1 Specifically: S4 includes S41; S41. Calculate the percentage of time-consistent qualified components in the statistical consistency result set Res. When the percentage is ≥80%, no operation is performed. When the percentage is <80%, the regional layer trigger condition is triggered. The regional layer trigger condition reads all records from the consistency result set Res, groups the records in the consistency result set Res according to the construction area number B, and assigns all records whose extended field is equal to the construction area number B to the component set of the same construction area number B. The number of prefabricated decorative components n within construction area number B is then counted. B ; Based on the time deviation index I contained in each record within the same construction area, a regional-level calculation is performed to output the time control index R. The time control index R is calculated and output using the following algorithm formula: In the formula, R B This represents the time control index for construction area B; min indicates the suppression of extreme deviations. This indicates a summation operation on all prefabricated decorative components in the component set corresponding to construction area number B; The time deviation index I of each component is truncated to within 1 in order to suppress the impact of extreme deviation values ​​on the regional evaluation. Regional assessment often uses the concept of "average deviation". This formula is based on the concept of "average relative deviation" and is an improvement on existing regional assessment methods. By truncating min(I) i ,1) Ensure that no matter how severe the condition of any single component is, it will not be infinitely amplified in value, thus avoiding affecting the usability of the evaluation.

[0033] S4 also includes S42; S42. A first time control threshold F1 and a second time control threshold F2 are preset, and the first time control threshold F1 is less than the second time control threshold F2; The time control index R for obtaining construction area number B. B Next, the time control index R for construction area B will be determined. B The data is compared sequentially with the first time control threshold F1 and the second time control threshold F2. The specific comparison details are as follows: When the time control index R of construction area number B B When the value is less than or equal to the first time control threshold F1, the construction area corresponding to construction area number B is marked as the first control state and a normal construction control instruction is generated; the normal construction control instruction does not perform any operation and the construction area of ​​construction area number B is displayed in green in the BIM interface; When the time control index R of construction area number B B When ∈ (F1, F2], the construction area corresponding to construction area number B is marked as the second control state and a flow-limiting construction control command is generated. The flow-limiting construction control command limits the number of parallel components for new tasks in the construction area to 8, and sets the time deviation index I of component number i. i For prefabricated decorative components with a deviation value greater than 1, the construction team must fill in the reason for the deviation on the barcode scanning interface, such as delayed material arrival or delayed delivery of previous components, to increase traceability. When the time control index R of construction area number B B > When the second time control threshold F2 is reached, the construction area corresponding to construction area number B is marked as the third control state and a construction control blockade instruction is generated. The construction control blockade instruction freezes the installation completion scanning function of construction area number B, allowing only variance and rectification scans. It can only be restored after the project manager unblocks it in the background.

[0034] In this embodiment, S4 of the method, through the design of S41 and S42, further upgrades the previous analysis of "single component time deviation" into hard control of "regional construction rhythm". S41 first uses "the proportion of qualified components with time consistency ≥ 80%" as a general valve: if the overall situation is still healthy, there is no need to trigger regional control frequently to avoid the system becoming overly sensitive; once the qualified proportion is < 80%, the regional trigger condition is entered, and the time control index R is calculated by aggregating all components in construction area B according to the time deviation index I. Furthermore, min(Ii,1) is used to cut off particularly outrageous extreme values ​​to within 1, preventing one or two abnormal values ​​from "overshooting" the entire regional evaluation. This is crucial in real-world scenarios. For example, if a component is delayed by many days due to special processes, it does not mean that the entire region is out of control. S42 further utilizes the comparison between the time control index RB and the first time control threshold F1 and the second time control threshold F2 to automatically divide the construction area number B into three states: normal construction, flow-limited construction, and closed construction. When RB≤F1, only monitoring is performed without intervention. When RB is between F1 and F2, the flow-limited construction control command is used to "apply the brakes," limiting the number of parallel components for new tasks in the area and forcing the filling of deviation reasons for components with Ii>1. When RB>F2, the closed construction control command is used to "pull the handbrake," directly freezing the scanning of newly installed codes in the area, allowing only review and rectification. The real physical significance of this approach is that when a time misalignment in a certain area begins to evolve from an "individual anomaly" into an "overall trend," the construction pace can be automatically tightened or even paused. For example, in airport VIP channels or important hospital corridors, it can prevent large-scale rework and operational risks caused by continuous rush work and disordered installation in advance. Compared with the traditional method of simply statistically analyzing deviations after the fact, it significantly improves the lead time and control of time consistency problems. Specifically, F1 and F2 calculate the RB distribution in areas where "there is no large-scale rework and no impact on operation" by statistically analyzing several completed projects. For example, if it is found that the RB of most healthy areas is less than 0.3, and the RB of areas with obvious disorder and rework is usually greater than 0.6, then in the embodiments, it can be given that: F1 is recommended to be in the range of 0.2-0.3; F2 is recommended to be in the range of 0.5-0.6. The claims still use the symbols F1 and F2 to abstractly express the values, without specifying the specific values, but only illustrating them in the embodiments. Example 6

[0035] Please see Figure 1 and Figure 2 The BIM-based traceability management system for prefabricated components in decoration engineering includes a traceability extraction module, a terminal extraction module, a deviation analysis module, and a traceability control module. The source tracing and extraction module establishes a time plan dataset DS for prefabricated decorative components in the BIM platform, and stores the time plan dataset DS for each prefabricated decorative component according to the component number i of the prefabricated decorative component. The terminal extraction module scans the prefabricated decorative components that have been installed using a mobile terminal scanning device at the construction site. The traceability management server receives the scan timestamp as the actual installation time of the component (Tact) and combines it with the time plan dataset (DS) to form a set of component time features. The deviation analysis module calculates the time deviation index I in the traceability management server based on the time feature set of the components, and then compares the output results of the time deviation index I. At the same time, it generates a set of construction consistency results Res based on the time deviation index I of each prefabricated decorative component. The traceability control module aggregates the consistent result set Res according to the construction area number B, and performs regional-level calculation on the time deviation index I in the same construction area number B to obtain the time control index R, and then compares and triggers the corresponding control state.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A BIM-based decoration engineering prefabricated component traceability management method, characterized in that: The method comprises the following steps: S1, establishing a time plan dataset DS of the prefabricated decoration component in the BIM platform, and storing the time plan dataset DS of each prefabricated decoration component in association with the component number i of the prefabricated decoration component; S2, using a mobile terminal code scanning device to perform installation completion code scanning on the prefabricated decoration component installed on the construction site, the traceability management server receiving a code scanning time stamp as an actual installation time Tact of the component, and combining the time plan dataset DS to form a component time feature set; S3, calculating a time deviation index I in the traceability management server based on the component time feature set, and generating a consistency result set Res based on the output result of the time deviation index I and the time deviation index I of each prefabricated decoration component; S4, aggregating the consistency result set Res according to the construction area number B, calculating the time deviation index I at the regional level in the same construction area number B, obtaining a time control index R, and comparing to trigger the corresponding control state. 2.The BIM-based decoration engineering prefabricated component traceability management method according to claim 1, characterized in that: The S1 comprises S11; S11、In the BIM model of the BIM platform, through the decoration engineering prefabricated component attribute table, the component number i and the construction area number B of each decoration engineering prefabricated component are automatically read and associated with the construction progress plan associated with the BIM model to read the planned installation time Tplan of the component number i corresponding to each decoration engineering prefabricated component i And the allowed time deviation Ttol of the component number i i ; The extracted component number i, construction area number B, planned installation time Tplan of component number i i And the allowable time deviation Ttol of component number i i The summary is integrated with the extension fields of construction task number field, construction stage identification field and construction team identification field to form a time plan data set DS storing all prefabricated decorative component time plan information. And a time plan data table is created in the project database of the BIM platform, and the time plan dataset DS is stored in the time plan data table. 3.The BIM-based decoration engineering prefabricated component traceability management method according to claim 2, characterized in that: The S1 further comprises S12; S12, in the storage process, the time plan dataset DS of the decoration engineering prefabricated component is stored in association with the component number i; The association storage divides the construction area number B corresponding to the component number i, the planned installation time Tplan of the component number i i and the allowable time deviation Ttol of the component number i i corresponding to the component number i into the time plan data set DS of the corresponding component number i in combination with the extension field of the corresponding component number i, and the time plan data set DS is saved in the project database of the BIM platform in ascending order according to the component number i. 4.The BIM-based decoration engineering prefabricated component traceability management method according to claim 3, characterized in that: The S2 comprises S21; S21, setting a machine-readable code identifier carrying the component number i information for each prefabricated decoration component on the construction site, the mobile terminal code scanning device being configured with an installation completion code scanning application, and a scanning interface of the installation completion code scanning application being used to display a component number i and a construction area number B information display area and an editable input control for inputting an installation completion deviation reason; When the construction personnel completes the installation of the prefabricated decoration component, the installation completion code scanning function is called through the mobile terminal code scanning device at the actual installation position of the prefabricated decoration component, the machine-readable code identifier preset on the prefabricated decoration component is scanned and recognized, the component number i and the construction area number B are obtained by the mobile terminal code scanning device, and a code scanning time stamp is generated based on the current system time of the mobile terminal code scanning device, the component number i, the construction area number B and the code scanning time stamp are packaged into an installation completion code scanning data message; The installation completion code scanning data message is sent to the traceability management server through a wireless network; The traceability management server, after receiving the installation completion scan code data message, generates the component actual installation time Tact of the component number i according to the system time of the traceability management server itself i , and stores the component actual installation time Tact of the component number i in association with the component number i and the construction area number B i . The traceability management server is connected with the project database of the BIM platform through a special data interface, so that the traceability management server can access the time plan dataset DS in the BIM platform. 5.The BIM-based decoration engineering prefabricated component traceability management method according to claim 4, characterized in that: The S2 further comprises S22; S22, the traceability management server generates the component actual installation time Tact of the component number i i After that, the time plan dataset DS corresponding to the component number i is called from the BIM platform with the component number i as the index, the component number i, the construction area number B, the planned installation time Tplan of the component number i in the time plan dataset DS are read i And the allowable time deviation Ttol of the component number i i The component actual installation time Tact of the component number i i Assembled into a component time feature vector record according to the preset field order, and then the time feature vector record corresponding to each component number i is summarized to build a component time feature set; The component time feature set is written into a component time feature data table in the project database, the component time feature data table being used as a storage structure of the component time feature set, and the component number i being used as an association key between the component time feature set and the time plan dataset DS. 6.The BIM-based decoration engineering prefabricated component traceability management method according to claim 5, characterized in that: The S3 comprises S31; S31, the traceability management server reads the actual installation time Tact of the component number i from the component time feature set i the planned installation time Tplan of the component number i corresponding to the component number i i and the allowable time deviation Ttol of the component number i i ; The traceability management server calculates the absolute value of the time difference between the component actual installation time Tact of the component number i i and the planned installation time Tplan of the component number i i , analyzes the time deviation range of the prefabricated decorative component, and then divides the time deviation range by the allowed time deviation Ttol of the component number i i , to obtain the time deviation index I; The time deviation index I is calculated and output by the following algorithm formula; I i =|Tact i -Tplan i | / Ttol i ; wherein I i denotes the time offset index of component number i.

7. The BIM-based decoration engineering prefabricated component traceability management method according to claim 6, characterized in that: The S3 further comprises S32; S32, the traceability management server outputs a result based on the time deviation index I of each prefabricated decoration component, performs hierarchical comparison, and obtains a corresponding time consistency comparison result for each prefabricated decoration component; wherein, when the time deviation index I of the component number i i ≤ 1, the corresponding prefabricated decorative component is determined as a time consistency qualified component, at which time a green mark is generated When the time deviation index I of the component number i i ∈ (1,2], the corresponding prefabricated decorative component is determined as a time slightly misaligned component, and a yellow mark is generated When the time deviation index I of the component number i i > 2, the corresponding prefabricated decorative component is determined as a time severely misaligned component, and a red mark is generated at this time; Meanwhile, in the display interface of the BIM platform, different levels of prefabricated decoration components are displayed in different colors to form a time dislocation construction heat distribution map; and the time offset index I of the component number i, the construction area number B and the component number i i , and the consistency result set Res is constructed according to the preset field order, and is stored in the time consistency result table in the project database again, and the consistency result set Res is specifically as follows: Res={component number i, construction area number B, time offset index I of component number i i}. 8.The BIM-based decoration engineering prefabricated component traceability management method according to claim 6, characterized in that: The S4 includes S41; S41, the proportion of time consistency qualified components in the consistency result set Res is counted, when the proportion is greater than or equal to 80%, no operation is performed, and when the proportion is less than 80%, the area layer trigger condition is triggered; The area layer triggering condition is achieved by reading all records from the consistency result set Res, grouping the records in the consistency result set Res according to the construction area number B, attributing all records with the extended field equal to the construction area number B to the same construction area number B component set, and counting the number n of prefabricated decorative components in the construction area number B B ; The time control index R is calculated and output based on the time deviation index I contained in each record in the same construction area at the area level; The time control index R is calculated and output by the following algorithm formula: ; wherein R B time control index of the construction area number B; min indicates the extreme deviation value. 9.The BIM-based decoration engineering prefabricated component traceability management method according to claim 8, characterized in that: The S4 also includes S42; S42, a first time control threshold F1 and a second time control threshold F2 are preset, and the first time control threshold F1 is less than the second time control threshold F2; The time control index R for obtaining construction area number B. B Next, the time control index R for construction area B will be determined. B The data is compared sequentially with the first time control threshold F1 and the second time control threshold F2. The specific comparison details are as follows: When the time control index R of the construction area numbered B B ≤ the first time control threshold F1, the construction area numbered B is marked as the first control state and a normal construction control instruction is generated; the normal construction control instruction does not operate and the construction area numbered B in the BIM interface is displayed in green. When the time control index R of the construction area No. B B ∈ (F1, F2], the construction area corresponding to the construction area No. B is marked as the second control state, and a flow limiting construction control instruction is generated, which limits the number of parallel components of the new task of the construction area to 8, and the time deviation index I of the component No. i i >1, the construction team must fill in the deviation reason in the code scanning interface; When the time control index R of the construction area number B is greater than the second time control threshold F2 B When the time control index R of the construction area number B is greater than the second time control threshold F2, the construction area corresponding to the construction area number B is marked as the third control state and a blocked construction control instruction is generated; the blocked construction control instruction freezes the installation completion scanning function of the construction area number B and only allows variance and rectification scanning, and only the project manager can resume after the block is removed in the background. 10.A BIM-based decoration engineering prefabricated component traceability management system applied to the BIM-based decoration engineering prefabricated component traceability management method of any one of claims 1-9, characterized in that: The system comprises a traceability extraction module, a terminal extraction module, a deviation analysis module, and a traceability control module. The traceability extraction module stores the time plan data set DS of each prefabricated decoration component in association with the component number i of the prefabricated decoration component by establishing the time plan data set DS of the prefabricated component of the decoration engineering in the BIM platform; The terminal extraction module performs installation completion scanning on the prefabricated decoration component that has completed installation by using a mobile terminal scanning device at the construction site, the traceability management server receives the scanning time stamp as the actual installation time Tact of the component, and combines the time plan data set DS to form a component time feature set; The deviation analysis module calculates the time deviation index I in the traceability management server based on the component time feature set, and compares the output result of the time deviation index I, and generates a consistency result set Res based on the time deviation index I of each prefabricated decoration component; The traceability control module aggregates the consistency result set Res according to the construction area number B, calculates the time deviation index I in the same construction area number B at the area level, obtains the time control index R, and compares to trigger the corresponding control state.

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